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Claims  |
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What is claimed is:
1. A method for calculating, and displaying on a display apparatus, the writable number of data whose maximum data quantity is no more than the predetermined quantity of a
variable length onto a data recording medium, comprising the steps of: counting the number of the data already written onto said data recording medium; obtaining a first value by dividing the whole data capacity of said data recording medium onto which
data can be written by said maximum data quantity; obtaining a second value by subtracting the number of data already written onto said data recording medium from said first value; counting the unused data capacity of said data recording medium;
obtaining a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity; comparing said second value with said third value; making the smaller value out of said second value and said third value the
writable number of the data onto said data recording medium; and displaying on said display apparatus said writable number of the data onto said data recording medium.
2. A method for calculating, and displaying on a display apparatus, the writable number of plural kinds of data whose respective maximum data quantities differ from each other and are no more than the predetermined quantities of variable length
onto a data recording medium, comprising the steps of: counting the number of the data already written onto said data recording medium on the respective ones of said plural kinds of data; obtaining a first value by dividing the whole data capacity of
said data recording medium onto which data can be written by said maximum data quantity of the predetermined kind of data out of said plural kinds; obtaining a second value by subtracting the number of data already written onto said data recording
medium converted into the number of said predetermined kind of data from said first value; counting the unused data capacity of said data recording medium; obtaining a third value by dividing the unused data capacity of said data recording medium by
said maximum data quantity of said predetermined kind of data; comparing said second value with said third value; making the smaller value out of said second value and said third value the writable number of the data onto said data recording medium;
and displaying on said display apparatus said writable number of the data onto said data recording medium.
3. The method as set forth in claim 2, further comprising a step of converting the smaller value out of said second value and said third value according to the respective maximum data quantities of the plural kinds of data into the writable
number of data onto the data recording medium.
4. A method for calculating, and displaying on a display apparatus, the number of frames allowable to be photo-shot of a digital still camera which holds the photo-shot images by writing the image data having the maximum data quantity of one
frame with a variable length of no more than a predetermined quantity onto a data recording medium, comprising the steps of: counting the number of frames of the data already written onto said data recording medium; obtaining a first value by dividing
the whole data capacity of said data recording medium onto which data can be written by the maximum data quantity; obtaining a second value by subtracting the number of frames of the image data already written onto said data recording medium from said
first value; counting the unused data capacity of said data recording medium; obtaining a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity; comparing said second value with said third value;
making the smaller value out of said second value and said third value the number of frames allowable to be photo-shot; and displaying on said display apparatus said number of frames allowable to be photo-shot.
5. A method for calculating, and displaying on a display apparatus, the number of frames allowable to be photo-shot of a digital still camera which holds the photo-shot image by writing plural kinds of the image data having the respectively
different maximum data quantity of one frame with a variable length of no more than a predetermined quantity onto the data recording medium, comprising the steps of: counting the number of frames of the image data already written onto said data recording
medium on the respective ones of the plural kinds of image data; obtaining a first value by dividing the whole data capacity of said data recording medium onto which data can be written by said maximum data quantity of the predetermined kinds of image
data out of plural kinds; obtaining a second value by subtracting the number of frames of the image data already written onto said data recording medium converted into the number of frames of the predetermined kinds of image data from said first value;
counting the unused data capacity of said data recording medium; obtaining a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity of said predetermined kind of image data; comparing said second
value with said third value; making the smaller value out of said second value and said third value the number of frames allowable to be photo-shot; and displaying on said display apparatus said number of frames allowable to be photo-shot.
6. The method as set forth in claim 5, further comprising a step of converting the smaller value out of said second value and said third value according to the respective maximum data quantities of the plural kinds of image data into the number
of frames allowable to be photo-shot.
7. A digital still camera, comprising: image pickup means for picking up an image and generating the image data for one frame having a constant data quantity; image data compressing means for compressing the image data of one frame generated by
said image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity of no more than the predetermined quantity of a variable length; data recording medium for storing the compressed image data
converted by said image data compressing means; counting means for counting the number of frames of the image data already written onto said data recording medium, and counting the unused data capacity of said data recording medium; operating means for
obtaining a first value by dividing the whole data capacity of said data recording medium onto which the data can be written by said maximum data quantity, obtaining a second value by subtracting the number of frames of the image data already written
onto said data recording medium from said first value, obtaining a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity, and comparing said second value with said third value; and displaying means
for displaying the smaller value out of the comparison result by said operating means as the number of frames allowable to be photo-shot.
8. A digital still camera, comprising: image pickup means for picking up an image and generating plural kinds of image data each having different constant data quantity for one frame; image data compressing means for compressing the image data
of one frame formed by said image pickup means by a predetermined method and converting into the compressed image data having a maximum data quantity, being different by the respective image data of plural kinds, of no more than the predetermined
quantity of a variable length; data recording medium for storing the compressed image data already converted by said image data compressing means; counting means for counting the number of frames of the image data already written onto said data
recording medium on the respective image data of plural kinds, and counting the unused data capacity of said data recording medium; operating means for obtaining a first value by dividing the whole data capacity of said data recording medium onto which
the data can be written by said maximum data quantity of the predetermined kinds of image data out of plural kinds, obtaining a second value by subtracting the value obtained by converting the number of frames of the image data already written onto said
data recording medium into the number of frames of said predetermined kinds of the image data from said first value, obtaining a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity of said
predetermined kind of image data, and comparing said second value with said third value; and displaying means for displaying the smaller value out of the comparison result by said operating means as the number of frames allowable to be photo-shot.
9. The digital still camera as set forth in claim 8, wherein said displaying means convert the smaller value out of the comparison results by said operating means according to the respective maximum data quantity of the plural kinds of image
data, and display as the number of frames allowable to be photo-shot.
10. A digital still camera, comprising: image pickup means for picking up an image and generating the image data for one frame having a constant data quantity; image data compressing means for compressing the image data of one frame generated
by said image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity of no more than the predetermined quantity of a variable length; voice data generating means for generating the voice
data of a constant data quantity by taking in the voice for a predetermined time at picking up images of the image data by said image pickup means; data recording medium for storing the compressed image data converted by said image data compressing
means and the voice data generated by said voice data generating means; counting means for counting the number of frames of the image data and the number of voice data written onto said data recording medium, and counting the unused data capacity of
said data recording medium; operating means for obtaining a first value by dividing the whole data capacity of said data recording medium onto which the data can be written by said maximum data quantity, obtaining a second value by subtracting the
number of frames of the image data and the number of the voice data, which is converted into the number of frames of the image data, already written onto said data recording medium from said first value, obtaining a third value by dividing the unused
data capacity of said data recording medium by said maximum data quantity, and comparing said second value with said third value; and displaying means for displaying the smaller value out of the comparison result by said operating means as the number of
frames allowable to be photo-shot.
11. The digital still camera as set forth in claim 10, wherein said displaying means divides the smaller value out of the comparison results by said operating means by the value obtained by adding "1" to the voice data converted at a
predetermined rate into the number of frames of the image data, and displays as the number of frames allowable to be photo-shot.
12. A digital still camera, comprising: image pickup means for picking up an image and generating the plural kinds of image data each having different constant data quantity for one frame; image data compressing means for compressing the image
data of one frame formed by said image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity, being different by the respective image data of plural kinds, of no more than the predetermined
quantity of a variable length; voice data generating means for generating the voice data of a constant data quantity by taking in the voice for a predetermined time at picking up images of the image data by said image pickup means; data recording
medium for storing the compressed image data converted by said image data compressing means and the voice data generated by said voice data generating means; counting means for counting the number of frames of the image data on the respective ones of
plural kinds and the number of voice data already written onto said data recording medium, and counting the unused data capacity of said data recording medium; operating means for obtaining a first value by dividing the whole data capacity of said data
recording medium onto which the data can be written by said maximum data quantity of the predetermined kinds of the image data out of the plural kinds, obtaining a second value by subtracting the number of frames of the image data and the number of the
voice data, which is converted into the number of frames of said predetermined kinds of the image data, already written onto said data recording medium from said first value, obtaining a third value by dividing the unused data capacity of said data
recording medium by said maximum data quantity of said predetermined kinds of the image data, and comparing said second value with said third value; and displaying means for displaying the smaller value out of the comparison result by said operating
means as the number of frames allowable to be photo-shot.
13. The digital still camera as set forth in claim 12, wherein said displaying means divides the smaller value out of the comparison results by said operating means by a value obtained by adding the value of the voice data converted at a
predetermined rate into the number of frames of said predetermined kinds of image data and the value of the plural kinds of the image data converted respectively at predetermined rates into the number of frames of the predetermined kinds of the image
data, and displays as the number of frames allowable to be photo-shot.
14. A computer memory product readable by a computer to calculate, and display on a display apparatus, the writable number of data having the maximum data quantity of no more than the predetermined quantity of variable length onto a data
recording medium, said computer readable program code means comprising: computer readable program code means for causing said computer to count the number of data already written onto said data recording medium; computer readable program code means for
causing said computer to obtain a first value by dividing the whole data capacity of said data recording medium onto which the data can be written by the maximum data quantity; computer readable program code means for causing said computer to obtain a
second value by subtracting the number of the data already written onto said data recording medium from said first value; computer readable program code means for causing said computer to count the unused data capacity of said data recording medium;
computer readable program code means for causing said computer to obtain a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity; computer readable program code means for causing said computer to
compare said second value with said third value; computer readable program code means for causing said computer to make the smaller value out of said second value and said third value the writable number of data onto said data recording medium; and
computer readable program code means for causing said computer to display on said display apparatus said writable number of data onto said data recording medium.
15. A computer memory product readable by a computer to calculate, and display on a display apparatus, the writable number of plural kinds of data whose respective maximum data quantities differ from each other and are no more than the
predetermined quantities of variable length onto a data recording medium, said computer memory product comprising: computer readable program code means for causing said computer to count the number of the data already written onto said data recording
medium on the respective ones of said plural kinds of data; computer readable program code means for causing said computer to obtain a first value by dividing the whole data capacity of said data recording medium onto which data can be written by said
maximum data quantity of the predetermined kinds of data out of said plural kinds; computer readable program code means for causing said computer to obtain a second value by subtracting the number of the data already written onto said data recording
medium converted into the number of said predetermined kind of data from said first value; computer readable program code means for causing said computer to count the unused data capacity of said data recording medium; computer readable program code
means for causing said computer to obtain a third value by dividing the unused data capacity of said data recording medium by said maximum data quantity of said predetermined kind of data; computer readable program code means for causing said computer
to compare said second value with said third value; computer readable program code means for causing said computer to make the smaller value out of said second value and said third value the writable number of the data onto said data recording medium;
and computer readable program code means for causing said computer to display on said display apparatus said writable number of data onto said data recording medium.
16. The computer memory product as set forth in claim 15, further comprising a computer readable program code means for causing said computer to convert the smaller value out of said second value and said third value according to the respective
maximum data quantities of the plural kinds of data into writable number of data onto said data recording medium. |
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Claims |
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Description |
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BACKGROUND OF THE INVENTION
The present invention relates to a method of calculating the writable number of data onto a data recording medium and a recording medium, more particularly, to a method of calculating the number of frames allowable to be shot by a digital still
camera and a digital still camera to which such system is applied.
BRIEF SUMMARY OF THE INVENTION
With the rapid popularization of the computer system in recent years, especially of the personal computers, demands for various peripheral apparatuses have been expanded. Above all, as a peripheral apparatus for intake of photographs into the
personal computer, instead of the indirect intake procedure using a film scanner, flat bed scanner, or the like of taking in the photographs taken on a conventional film based on silver chloride system, there is noted with attention a digital still
camera with which the photo-shot image can be directly taken in as digital data.
Now, in the conventional digital still camera, the image signal of one frame portion shot with a CCD (Charge Coupled Device) which is an image pickup device is converted to digital form and stored straight in a bit map format. Accordingly, the
number of frames that can be photo-shot has not been so large. In recent years, however, there has been schemed to increase the number of frames which can be photographed in the compressed data in various data compressing method. Especially, the JPEG
(Joint Photograph Experts Group) system which has been standardized in recent years has been developed for compressing the high precision still photographic data for computer system in high efficiency, which has also been utilized as the image file
format for CD-ROM contents and Internet application.
Accordingly, in the field of the digital still camera, storage of the photo-shot image data not in the conventional simple bitmap format but in the JPEG format as described above is convenient, because the number of frames which can be stored in
a digital still camera can be increased. In view of such a situation, there have been brought into practical use the digital still cameras designed to compress the photo-shot image data by JPEG format and store, but in such a case new problems occur.
In case of recording and storing the data of the photographed image in a data recording medium in the digital still camera by the conventional simple bitmap format, the data quantity is constant, and therefore the remaining number of shots can be
easily obtained by dividing the data quantity of the unused region of the data recording medium by the data quantity of the bitmap data for one frame. However, in case of storing the image data by compression by JPEG format in the data recording medium
in the digital still camera, the data after compression become the variable length data, so that there is a problem that the remaining number of frames allowable to be taken cannot be accurately calculated.
Different from the ordinary camera for which a silver salt system film is used, the digital still camera is usable to take shots in different resolutions frame by frame. However, because when the resolution is different the data quantity is
naturally different, calculation of the remaining number of frames allowable to be shot is made more difficult. Furthermore, in the digital still camera, different from the conventional camera for which a film is used, a constitution to make the voice
recording possible at the same time can be easily adopted. In case such a constitution is taken, voice data recording is also necessitated, which involves the greater difficulty in calculating the remaining number of frames allowable to be shot.
However, it is the essential information for the user to grasp how many remaining shots can be taken, and accordingly it is a question never to be neglected for the manufacturer.
The present invention has been made in reflection of the situation as reviewed above. Concretely, it has an object to provide a method for calculating the number of the remaining frames allowable to be shot in case of recording and storing in
the data recording medium in the digital still camera in compressing the image data of different data quantities shot in various resolutions in a digital still camera by a compression method in which the data after compression become the variable length
data; a digital still camera to which above method is applied; and further, the calculating method per se; and a recording medium in which such computer program is recorded.
The method for calculating the writable number of data whose maximum data quantity is no more than the predetermined quantity of a variable length onto a data recording medium of the present invention, comprises the steps of: counting the number
of the data already written onto the data recording medium; obtaining a first value by dividing the whole data capacity of the data recording medium onto which data can be written by the maximum data quantity; obtaining a second value by subtracting the
number of data already written onto the data recording medium from the first value; counting the unused data capacity of the data recording medium; obtaining a third value by dividing the unused data capacity of the data recording medium by the maximum
data quantity; comparing the second value with the third value; and making the smaller value out of the second value and the third value the writable number of the data onto the data recording medium.
According to such calculating method of the present invention, in writing the data whose maximum data quantity is no more than the predetermined quantity of the variable length onto the data recording medium, the number of the data written onto
the data recording medium is counted, the first value obtained by dividing the whole data capacity of the data recording medium onto which data can be written by the maximum data quantity is obtained; the second value is obtained by subtracting the
number of data written onto the data recording medium from the first value; the unused data capacity of the data recording medium is counted; the third value is obtained by dividing the unused data capacity of the data recording medium by the maximum
data quantity; the second value is compared with the third value; and as a result, the smaller value out of the second value and the third value is obtained as the writable number of the data onto the data recording medium.
A method for calculating the writable number of plural kinds of data whose respective maximum data quantities differ from each other and are no more than the predetermined quantities of variable length onto a data recording medium of the present
invention, comprises the steps of: counting the number of the data already written onto the data recording medium on the respective ones of the plural kinds of data; obtaining a first value by dividing the whole data capacity of the data recording medium
onto which data can be written by the maximum data quantity of the predetermined kind of data out of the plural kinds; obtaining a second value by subtracting the number of data already written onto the data recording medium converted into the number of
the predetermined kind of data from the first value; counting the unused data capacity of the data recording medium; obtaining a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity of the
predetermined kind of data; comparing the second value with the third value; and making the smaller value out of the second value and the third value the writable number of the data onto the data recording medium.
According to such method of the present invention, in writing a plurality of kinds of data whose respective maximum quantities differ from each other and are no more than the predetermined quantity of variable length onto the data recording
medium, the number of the data written onto the data recording medium is counted on the respective data of plural kinds, the first value is obtained by dividing the whole data capacity of the data recording medium onto which data can be written by the
maximum data quantity of the predetermined kind of data out of the plural kinds; the second value is obtained by subtracting the number of data written onto the data recording medium converted into the number of the data of the predetermined kind from
the first value; the unused data capacity of the data recording medium is counted; the third value is obtained by dividing the unused data capacity of the data recording medium by the maximum data quantity of the predetermined kind of data; the second
value is compared with the third value; and as a result, the smaller value out of the second value and the third value is obtained as the number of the writable data onto the data recording medium.
The abovementioned method of the present invention, further comprises a step of converting the smaller value out of the second value and the third value according to the respective maximum data quantities of the plural kinds of data into the
writable number of data onto the data recording medium.
According to such calculating method of the invention, the smaller value out of the second value and the third value is converted according to the respective maximum data quantities of the plural kinds of data and is obtained as the number of
writable data onto the data recording medium.
A method for calculating the number of frames allowable to be photo-shot of a digital still camera which holds the photo-shot images by writing the image data having the maximum data quantity of one frame is a variable length of no more than the
predetermined quantity onto a data recording medium of the present invention, comprises the steps of: counting the number of frames of the data already written onto the data recording medium; obtaining a first value by dividing the whole data capacity of
the data recording medium onto which data can be written by the maximum data quantity; obtaining a second value by subtracting the number of frames of the image data already written onto the data recording medium; counting the unused data capacity of the
data recording medium; obtaining a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity; comparing the second value with the third value; and making the smaller value out of the second value and the
third value the number of frames allowable to be photo-shot.
According to such method for calculating the number of frames allowable to be photo-shot in the digital still camera of the present invention, in storing the photo-shot images by writing onto the data recording medium an image data whose maximum
data quantity of one frame is no more than the predetermined quantity of a variable length, the number of frames of the image data written onto the data recording medium is counted; the first value is obtained by dividing the whole data capacity of the
data recording medium onto which data can be written by the maximum data quantity; the second value is obtained by subtracting the number of frames of the image data written onto the data recording medium from the first value; the unused data capacity of
the data recording medium is counted; the third value is obtained by dividing the unused data capacity of the data recording medium by the maximum data quantity; the second value is compared with the third value; and as a result the smaller value out of
the second value and the third value is obtained as the number of frames allowable to be photo-shot.
A method for calculating the number of frames allowable to be photo-shot of a digital still camera which holds the photo-shot image by writing plural kinds of the image data having the respectively different maximum data quantity of one frame
with a variable length of no more than the predetermined quantity onto the data recording medium of the present invention, comprises the steps of: counting the number of frames of the image data already written onto the data recording medium on the
respective ones of the plural kinds of image data; obtaining a first value by dividing the whole data capacity of the data recording medium onto which data can be written by the maximum data quantity of the predetermined kinds of image data out of plural
kinds; obtaining a second value by subtracting the number of frames of the image data already written onto the data recording medium converted into the number of frames of the predetermined kinds of image data from the first value; counting the unused
data capacity of the data recording medium; obtaining a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity of the predetermined kind of image data; comparing the second value with the third value;
and making the smaller value out of the second value and the third value the number of frames allowable to be photo-shot.
According to such method for calculating the number of frames allowable to be photo-shot in the digital still camera of the present invention, in writing onto the data recording medium plural kinds of image data whose maximum data quantity of one
frame is respectively different and are no more than the predetermined quantity of a variable length, the number of frames of the image data written onto the data recording medium is counted on the respective ones of the plural kinds of image data; the
first value is obtained by dividing the whole data capacity of the data recording medium onto which data can be written by the maximum data quantity of the predetermined kinds out of the plural kinds of data; the second value is obtained by subtracting
the value of the number of frames of the image data written onto the data recording medium converted into the number of frames of the predetermined kind of image data from the first value; the unused data capacity of the data recording medium is counted;
the third value is obtained by dividing the unused data capacity of the data recording medium by the maximum data quantity; the second value is compared with the third value; and as a result the smaller value out of the second value and the third value
is obtained as the number of frames allowable to be photo-shot.
The abovementioned method of the present invention further comprises a step of converting the smaller value out of the second value and the third value according to the respective maximum data quantities of the plural kinds of image data into the
number of frames allowable to be photo-shot.
According to such method of the number of frames allowable to be photo-shot with the digital still camera of the invention, the smaller value out of the second value and the third value is converted according to the respective maximum data
quantities of the plural kinds of image data and is obtained as the number of frames allowable to be photo-shot.
The digital still camera of the present invention, comprises: image pickup means for picking up an image and generating the image data for one frame having a constant data quantity; image data compressing means for compressing the image data of
one frame generated by the image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity of no more than the predetermined quantity of a variable length; data recording medium for storing the
compressed image data converted by the image data compressing means; counting means for counting the number of frames of the image data already written onto the data recording medium, and counting the unused data capacity of the data recording medium;
operating means for obtaining a first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity, obtaining a second value by subtracting the number of frames of the image data
already written onto the data recording medium from the first value, obtaining a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity, and comparing the second value with the third value; and
displaying means for displaying the smaller value of the comparison result by the operating means as the number of frames allowable to be photo-shot.
According to such digital still camera of the present invention as above, the counting means counts the number of frames of the image data written onto the data recording medium and the unused data capacity of the data recording medium; the
operating means obtains the first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity, obtains the second value by subtracting the number of frames of the image data
written onto the data recording medium from the first value, obtains the third value by dividing the unused data capacity of the data recording medium by the maximum data quantity, and compares the second value with the third value; and displaying means
displays the smaller value out of the comparison result by the operating means as the number of frames allowable to be photo-shot.
A digital still camera of the present invention, comprises: image pickup means for picking up an image and generating the plural kinds of image data each having different constant data quantity for one frame; image data compressing means for
compressing the image data of one frame formed by the image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity, being different by the respective image data of plural kinds, of no more
than the predetermined quantity of a variable length; data recording medium for storing the compressed image data already converted by the image data compressing means; counting means for counting the number of frames of the image data already written
onto the data recording medium on the respective image data of plural kinds, and counting the unused data capacity of the data recording medium; operating means for obtaining a first value by dividing the whole data capacity of the data recording medium
onto which the data can be written by the maximum data quantity of the predetermined kinds of image data out of plural kinds, obtaining a second value by subtracting the value obtained by converting the number of frames of the image data already written
onto the data recording medium into the number of frames of the predetermined kinds of the image data from the first value, obtaining a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity of the
predetermined kind of image data, and comparing the second value with the third value; and displaying means for displaying the smaller value out of the comparison result by the operating means as the number of frames allowable to be photo-shot.
In such digital still camera of the present invention as above, the counting means counts the number of frames of the image data written onto the data recording medium on the plural kinds of respective image data and the unused data capacity of
the data recording medium; the operating means obtains the first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity of the predetermined kinds of image data out of plural
kinds, obtains the second value by subtracting the value obtained by converting the number of frames of the image data written onto the data recording medium into the number of frames of the predetermined kinds of image data from the first value, obtains
the third value by dividing the unused data capacity of the data recording medium by the maximum data quantity of the predetermined kinds of image data, and compares the second value with the third value; and displaying means displays the smaller value
out of the comparison result by the operating means as the number of frames allowable to be photo-shot.
Furthermore, the digital still camera as abovementioned of the present invention, wherein the displaying means converts the smaller value out of the comparison results by the operating means according to the respective maximum data quantity of
the plural kinds of image data, and displays as the number of frames allowable to be photo-shot.
In such digital still camera of the present invention as above, the displaying means displays the smaller value based on the results of comparison by the operating means as the number of frames allowable to be photo-shot, by converting according
to the respective maximum data quantity of plural kinds of image data.
The digital still camera of the present invention, comprises: image pickup means for picking up an image and generating the image data for one frame having a constant data quantity; image data compressing means for compressing the image data of
one frame generated by the image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity of no more than the predetermined quantity of a variable length; voice data generating means for
generating the voice data of a constant data quantity by taking in the voice for the predetermined time at picking up images of the image data by the image pickup means; data recording medium for storing the compressed image data converted by the image
data compressing means and the voice data generated by the voice data generating means; counting means for counting the number of frames of the image data and the number of voice data written onto the data recording medium, and counting the unused data
capacity of the data recording medium; operating means for obtaining a first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity, obtaining a second value by subtracting
the number of frames of the image data and the number of the voice data, which is converted into the number of frames of the image data, already written onto the data recording medium from the first value, obtaining a third value by dividing the unused
data capacity of the data recording medium by the maximum data quantity, and comparing the second value with the third value; and displaying means for displaying the smaller value out of the comparison result by the operating means as the number of
frames allowable to be photo-shot.
According to the digital still camera of the present invention as above, the counting means counts the number of frames of the image data written onto the data recording medium and the number of the voice data and the unused data capacity of the
data recording medium; the operating means obtains the first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity, obtains the second value by subtracting the number of
frames of the image data written onto the data recording medium and the number of the voice data converted to the number of frames of the image data from the first value, obtains the third value by dividing the unused data capacity of the data recording
medium by the maximum data quantity, and compares the second value with the third value; and displaying means displays the smaller value out of the comparison result by the operating means as the number of frames allowable to be photo-shot.
Furthermore, the digital still camera as mentioned above of the present invention, wherein the displaying means divides the smaller value out of the comparison results by the operating means by the value obtained by adding "1" to the voice data
converted at a predetermined rate into the number of frames of the image data, and displays as the number of frames allowable to be photo-shot.
In such digital still camera of the present invention as above, the displaying means divides the smaller value out of the comparison results by the operating means by the value obtained by adding "1" to the voice data converted at a predetermined
rate into the number of frames of the image data, and displays as the number of frames allowable to be photo-shot.
A digital still camera of the present invention, comprises: image pickup means for picking up an image and generating the plural kinds of image data each having different constant data quantity for one frame; image data compressing means for
compressing the image data of one frame formed by the image pickup means by a predetermined method and converting into the compressed image data having the maximum data quantity, being different by the respective image data of plural kinds, of no more
than the predetermined quantity of a variable length; voice data generating means for generating the voice data of a constant data quantity by taking in the voice for the predetermined time at picking up images of the image data by the image pickup
means; data recording medium for storing the compressed image data converted by the image data compressing means and the voice data generated by the voice data generating means; counting means for counting the number of frames of the image data on the
respective ones of plural kinds and the number of voice data already written onto the data recording medium, and counting the unused data capacity of the data recording medium; operating means for obtaining a first value by dividing the whole data
capacity of the data recording medium onto which the data can be written by the maximum data quantity of the predetermined kinds of the image data out of the plural kinds, obtaining a second value by subtracting the number of frames of the image data and
the number of the voice data, which is converted into the number of frames of the predetermined kinds of the image data, already written onto the data recording medium from the first value, obtaining a third value by dividing the unused data capacity of
the data recording medium by the maximum data quantity of the predetermined kinds of the image data, and comparing the second value with the third value; and displaying means for displaying the smaller value out of the comparison result by the operating
means as the number of frames allowable to be photo-shot.
According to such digital still camera of the present invention as above, the counting means counts the number of frames of the image data written onto the data recording medium and the number of the voice data and the unused data capacity of the
data recording medium; the operating means obtains the first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity, obtains the second value by subtracting the number of
frames of the image data written onto the data recording medium and the number of the voice data converted into the number of frames of the image data from the first value, obtains the third value by dividing the unused data capacity of the data
recording medium by the maximum data quantity, and compares the second value with the third value; and displaying means displays the smaller value out of the comparison result by the operating means as the number of frames allowable to be photo-shot.
Furthermore, the digital still camera as mentioned above of the present invention, wherein the displaying means divides the smaller value out of the comparison results by the operating means by the value obtained by adding the value of the voice
data converted at a predetermined rate into the number of frames of the predetermined kinds of image data and the value of the plural kinds of the image data converted respectively at predetermined rates into the number of frames of the predetermined
kinds of the image data, and displays as the number of frames allowable to be photo-shot.
In such digital still camera of the present invention as above, the displaying means divides the smaller value out of the comparison results by the operating means by the value of the voice data converted at a predetermined rate into the number
of frames of the predetermined kinds of image data and the value of the plural kinds of the image data converted respectively into the predetermined kinds of the number of frames of the image data, and displays as the number of frames allowable to be
photo-shot.
Furthermore, the computer memory product readable by a computer to calculate the writable number of data having the maximum data quantity of no more than the predetermined quantity of variable length onto a data recording medium, the computer
readable program code means comprises: computer readable program code means for causing the computer to count the number of the data already written onto the data recording medium; computer readable program code means for causing the computer to obtain a
first value by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity; computer readable program code means for causing the computer to obtain a second value by subtracting the number
of the data already written onto the data recording medium from the first value; computer readable program code means for causing the computer to count the unused data capacity of the data recording medium; computer readable program code means for
causing the computer to obtain a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity; computer readable program code means for causing the computer to compare the second value with the third value;
and computer readable program code means for causing the computer to make the smaller value out of the second value and the third value the writable number of data onto the data recording medium.
In such computer memory product of the invention as above, in case the step code means recorded therein are read and loaded in the computer such as a personal computer or a digital camera, the number of the data written onto the data recording
medium is counted, the first value is obtained by dividing the whole data capacity of the data recording medium is possible by the maximum data quantity, the second value is obtained by subtracting the number of data written onto the data recording
medium from the first value, the unused data capacity of the data recording medium is counted, the third value is obtained by dividing the unused data capacity of the data recording medium by the maximum data quantity, the second value is compared with
the third value, and as a result, the smaller value out of the second value and the third value is obtained as the number of data allowable to be written onto the data recording medium.
Furthermore, the computer memory product readable by a computer to calculate the writable number of plural kinds of data whose respective maximum data quantities differ from each other and are no more than the predetermined quantities of variable
length onto a data recording medium of the present invention, the computer readable program code means comprises: computer readable program code means for causing the computer to count the number of the data already written onto the data recording medium
on the respective ones of the plural kinds of data; computer readable program code means for causing the computer to obtain a first value by dividing the whole data capacity of the data recording medium onto which data can be written by the maximum data
quantity of the predetermined kinds of data out of the plural kinds; computer readable program code means for causing the computer to obtain a second value by subtracting the number of the data already written onto the data recording medium converted
into the number of the predetermined kind of data from the first value; computer readable program code means for causing the computer to count the unused data capacity of the data recording medium; computer readable program code means for causing the
computer to obtain a third value by dividing the unused data capacity of the data recording medium by the maximum data quantity of the predetermined kind of data; computer readable program code means for causing the computer to compare the second value
with the third value; and computer readable program code means for causing the computer to make the smaller value out of the second value and the third value the writable number of the data onto the data recording medium.
In such computer memory product of the invention as above, in case the step code means recorded therein are read and loaded in the computer such as a personal computer or a digital camera, the number of the data written onto the data recording
medium is counted on the respective ones of the plural kinds of data, the first value is obtained by dividing the whole data capacity of the data recording medium onto which the data can be written by the maximum data quantity of the predetermined kinds
of data out of the plural kinds, the second value is obtained by subtracting the number of data written onto the data recording medium converted into the number of the data of the predetermined kinds from the first value, the unused data capacity of the
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