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BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a picture reading apparatus and more
particularly to apparatus for reading a picture using, for example, an
electronic camera or the like.
2. Related Background Art
Applicants have proposed and disclosed a picture reading apparatus of this
type in Japanese Patent Application No. 176083/1985.
However, in the proposed apparatus, no voice device is included, so that a
microphone must be additionally prepared, for example, when voice
transmission is required during use of the picture reading apparatus.
SUMMARY OF THE INVENTION
The present invention has been made in view of the above drawback. It is a
first object of the present invention to provide integral voice input
means in a picture reading apparatus.
In order to achieve this object, a preferred embodiment of this invention
includes voice input means disposed in support means of the picture
reading apparatus.
Thus if voice transmission is needed during use of the picture reading
apparatus, the voice input means is available without the need for
additional preparation for a microphone, etc.
It is another object of this invention to provide a picture reading
apparatus in which a preferred disposition of voice input means is
accomplished.
It is a further object of this invention to provide a picture reading
apparatus which can alleviate the influence, on the voice input means, of
noise, etc., produced, for example, by the movement of movable members
when the picture reading apparatus is operated.
According to a preferred embodiment for achieving theses to achieve these
objects, there is disclosed a picture reading apparatus comprising a
photoelectric conversion means for converting a read picture to an
electric signal, support means for movably supporting the photoelectric
conversion means, voice input means, and control means for minimizing the
output of the voice input means during the movement of the support means.
According to this embodiment, the output of the voice input means is
minimized during operation of a movement mechanism for the photoelectric
conversion means, so that possible operation noise, which might be
annoying to the operator or anyone else present, is prevented from being
output.
It is a further object of this invention to provide a picture reading
apparatus which includes support means which movably supports
photoelectric conversion means which converts a read picture to an
electric signal, in which generation of an undesired video signal from the
photoelectric conversion means is prevented during the movement of the
support means.
In order to achieve such an object, according to a preferred embodiment of
this invention, there is disclosed a picture reading apparatus comprising
an object plate on which an object to be read can be placed, picture
pickup means supported movably on the plate for picking up a picture in
the object to output a video signal, and a monitor display for outputting
the read picture using the video signal, and control means for preventing
the monitor display from displaying the video signal output from the
pickup means during movement of the pickup means.
In the thus constructed picture reading apparatus, there is provided means,
halfway in the circuit of signal lines which carry a video output signal
from the pickup means for interrupting the output signal from the pickup
means or for reducing the output signal to below a predetermined level in
response to and during movement of the pickup means. Thus an undesirable
and useless picture is erased.
It is a further object of this invention to provide a picture reading
apparatus which improves certain mechanisms, for example, the layout and
mechanism of support means which supports the pickup means, of the
apparatus proposed in the above application.
Other objects and features of this invention will be apparent from the
following description of preferred embodiments thereof and the
accompanying drawings
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of one preferred embodiment of a picture
reading apparatus according to this invention;
FIG. 2 is a cross-sectional view taken along the line A--A in FIG. 1;
FIGS. 3 and 4 are views of a second embodiment of the present invention and
are similar to FIGS. 1 and 2, respectively;
FIG. 5 is an enlarged cross-sectional view of a third embodiment of this
invention taken along a line similar to the line A--A of FIG. 1;
FIG. 6 is a cross-sectional view of the essential portion of FIG. 5 viewed
in the direction of the arrow X;
FIG. 7 is an electrical circuit diagram of a microphone section of the
third embodiment;
FIG. 8 is a perspective view showing one example of the structure of a
picture reading apparatus of a fourth embodiment of this invention;
FIG. 9 is a perspective view showing the apparatus of FIG. 8 with the
camera unit 2' turned;
FIG. 10 illustrates the structure of a control circuit of a picture reading
apparatus of a fourth embodiment of this invention; and
FIG. 11 is a plan view of the fourth embodiment with the horizontal support
removed.
DESCRIPTION OF THE PREFERRED EMBODIMENT
This invention will now be described on the basis of embodiments thereof.
(First Embodiment)
FIGS. 1 and 2 are a perspective view of a first embodiment of this
invention, and an enlarged cross-sectional view taken along the line A--A
of FIG. 1, respectively.
In FIGS. 1 and 2, reference numeral 1 denotes a document or object plate on
which a material containing a picture 1a to be read is placed. The
camera-side surface of plate 1 is covered with gray color in order to
adjust the white balance of a camera 2. The camera 2 includes a
photoelectric conversion unit to read a picture in an original document or
the like to be described later. The camera-side surface of plate 1 may be
white. However, if too much light enters the photoelectric conversion
unit, the output of the conversion unit would be saturated so that
appropriate adjustment of the white balance may be impossible. Thus in
order to prevent this, it is preferable to use gray which has a lower
reflection factor than white. In order to prevent random reflective light
from entering camera 2 from plate 1, plate 1 is of the diffusion
reflection type. Camera 2 is of the electronic type and is firmly secured
to a horizontal supporting member 3 to be described later and includes a
color photoelectric conversion unit. Horizontal supporting member 3 is
slidable in the direction of the arrows X shown so as to shift the area
photographed or picked up by camera 2. A vertical supporting member 4 is
firmly secured to horizontal supporting member 3 and is slidable in the
direction of the arrows Z shown. Vertical supporting member 4 has at its
lower plate-side end a monitor display 5, a switch 6a which selects
between an external input video signal to be also described later and a
video signal from camera 2 to feed to display 5 and an external
utilization device, and a power source switch 7. In order that the user,
who is near plate 1, can easily see the display 5, monitor display 5 is
tilted at the lower portion of vertical supporting member 4. Monitor
display 5 is also disposed so that display 5 and plate 1 are at equal
distances from the user. The tilting of monitor 5 which includes a liquid
crystal television causes monitor 5 to be placed deep within vertical
supporting member 4 with a ceiling 5a preventing light from a lamp 8 to be
described later from entering display 5, thereby protecting same from
becoming obscure. Lamp 8 illuminates the entire plate 1 via a diffusion
plate 9. Lamp 8 illuminates plate 1 from above and to one side so as to
prevent a light flux from lamp 8 from being reflected and directly
entering camera 2. A switch 10 automatically adjust the white balance of
camera 2 when switched on. The white balance may be adjusted manually in
accordance with the external light, for example, a fluorescent light,
daylight or incandescent light when switch 10 is switched on. An operation
knob 30 can slide or fix vertical supporting member 4. An external video
signal is applied to an external input terminal 12 and output from monitor
display 5 and monitor output terminal 13. An illumination lamp 14
illuminates monitor display 5. Reference numerals 15, 16 and 17 denote a
slide table to be also described in more detail later, an up-and-down
moving stand and a fixed stand which fixes plate 1, respectively An
external voice input unit such as a microphone 18 is built in vertical
supporting member 4 and may output its voice output from an output
terminal (not shown) or from a monitor output terminal 13.
(Operation)
According to the above structure, when the picture reading apparatus is
used and a voice input is required, the built-in microphone 18 is at once
available. Since microphone 18 is disposed near a circuit 19, as will be
obvious from FIG. 2, advantageously, electric noise is difficult to
entrain on the voice signal.
(Second Embodiment)
However, in the first embodiment, the user of the apparatus is remote from
microphone 18, so that even a microphone of high directivity would pick up
ambient noise and the S/N ratio of the voice signal would be reduced.
Since the previous embodiment includes vertically slidable vertical
supporting member 4 and video output switch 6a, etc., microphone 18 may
pick up switching noise by switch 6a, frictional noise produced when
vertical supporting member 4 is moved vertically, noise produced by
rotation and/or fastening of a fixed knob 11 at vertical supporting member
4, etc. Thus an improved embodiment which improves the S/N ratio of the
voice output will be shown in FIGS. 3 and 4. In this embodiment, the
external voice input unit is disposed at an end of a horizontal portion of
the supporting member nearest the user of the apparatus.
FIGS. 3 and 4 are a perspective view of the second embodiment and an
enlarged cross-sectional view taken along the line A--A of FIG. 3,
respectively. Like components in FIGS. 1 and 2, FIGS. 3, 4 are identified
by like numerals and a duplicate description will not be repeated.
(Structure)
This embodiment is characterized that, as described above, the external
voice input unit such as microphone 18 is disposed at an end of horizontal
supporting member 3 of the camera support unit, the voice signal is
transmitted via shieled line 18a to circuitry 19 to process signals, and a
shieled line 18a is used as a lead so as not to pick up electric noise.
(Operation)
According to the above structure, microphone 18 is disposed nearest the
user of the apparatus, so that use of a microphone having high directivity
prevents the microphone from picking up useless ambient noise and can pick
up the user's voice with fidelity. Microphone 18 is disposed remote from
sources of noise such as switching noise by switch 6a, noise produced by
sliding vertical supporting member 4, and noise produced by
rotation/fastening of knob 11, so that the microphone is prevented from
picking up these noises, thereby improving the S/N ratio of the voice
output signal.
As described above, according to this embodiment, the external voice input
unit is built in the supporting member of the picture reading apparatus,
so that when the apparatus is used, the voice input unit can at once meet
the need for voice input, if any.
(Third Embodiment)
Now a third embodiment of this invention will be described which prevents
noise produced by operations such as locking, unlocking or the like from
adversely affecting the output of the microphone during movement of the
photoelectric conversion unit. The external appearance of this embodiment
are the same as in the perspective view of FIG. 1, so that a duplicate
description will not be repeated and only a description concerning the
cross-section of the embodiment will be made.
FIG. 5 is a cross-sectional view of the third embodiment of this invention
taken along the line similar to the line A--A of FIG. 1. In FIG. 5,
reference numerals 15, 16 and 17 denote a slide table, an up-and-down
moving stand and a fixed stand which fixes plate 1, respectively. In this
embodiment, plate 1, camera 2 and monitor 5 are fixed as a unit by
horizontal and vertical supporting members 3 and 4.
This structure is essentially the same as the referenced art and a
duplicate description will not be repeated. A pair of pins 8 is fixed to
moving stand 16, extends through guide grooves 17a in fixed stand 17 and
is fixed to a cover 4a of vertical supporting member 4, as shown in FIG.
6, which is a cross-sectional view taken along the arrows X of FIG. 5.
In FIGS. 5 and 6, reference numeral 30 denotes a first lever which turns
around a pin 19 fixed to moving stand 16 and has an operation knob 11
fixed at one end and a pin 20 fixed to the other end to which a second
lever 22 is pivoted. Lever 22 has at one end a frictional member 21, for
example, of rubber, fixed thereto and forced against fixed stand 17 to
form a toggle mechanism between stands 16 and 17. A tension coil spring 23
is engaged at one end with pin 20 which forms an intersection of levers 30
and is 22, and biased to increase the toggle angle included between levers
30 and 22. Reference numeral 24 denotes a guide pin for lever 22 fixed to
moving stand 16. A lock lever 25 is guided by a pair of pins 26 fixed to
moving stand 16 so as to slide in the direction of the arrows X and has at
one end a locking portion 25a which is locked in a member 29 fixed to the
fixed stand 17. A tension coil spring 27 normally biases lock lever 25
toward member 29.
In this embodiment, member 29 is locked only when moving stand 16 has
reached a bottom dead center. This is because the locking mechanism
composed of levers 30 and 22 can lock stand 16 like a toggling mechanism
when stand 16 moves downwardly while the locking mechanism cannot lock
stand 16 as a result of the toggle angle included between levers 30 and 22
decreasing when moving stand 16 moves upwardly.
Consequently, the stand 16 is completely locked by the second locking
mechanism which includes lever 25, member 29, etc., at the bottom dead
center of moving stand 16. The reason why the stand 16 is completely
locked only at its bottom dead center is that the practicality of stand 16
is considered. Namely, complete locking is not needed in the vertical
movement of stand 16 for magnification zooming, etc., and complete locking
is required when the apparatus is transported and/or housed. In these
cases, moving stand 16 is usually held at its bottom dead center position,
so that the apparatus is constructed so as to lock the stand 16 only at
the bottom dead center position. The apparatus may be constructed such
that complete locking is performed at a plurality of other predetermined
positions as needed.
A spacer 28 is fixed to moving stand 16 so as to provide a spacing between
moving stand 16 and fixed stand 17.
In FIGS. 5 and 6, reference numerals 18 and 31 denote a voice input unit
including a microphone, and a detector switch, respectively.
FIG. 7 shows the electrical circuit of the microphone section. SP denotes
an external speaker. Reference numeral 32 denotes an amplifier. R1-R4
denote resistors. The output signal from microphone 18 is amplified by
amplifier 32 via resistors R1, R2 and delivered to external speaker SP.
When the detector switch 31 between resistors R1 and R2 is off, the signal
from microphone 18 is input to amplifier 32 while when the detector switch
31 is switched on, it is grounded and no signal from microphone 18 is
transmitted to amplifier 32, so that the speaker SP produces no sound.
(Operation)
The electronic camera 2 is moved horizontally in the direction of the
arrows X by the sliding of the pair of pins 9 fixed to moving stand 16 in
the elongated grooves 15c in slide table 15. At this time, camera 2 is
moved by moving cover 3a in the direction of the arrows X because cover 3a
of horizontal supporting member 3 is fixed to slide table 15 by members
15a, 15b along with camera 2.
When camera 2 is to be moved vertically in the direction of the arrows X, a
portion 16a of moving stand 16 and operation knob 11 are held, as shown in
FIG. 6, and rotated in the direction of the arrow a (FIG. 5) by the thumb
and other fingers of one hand H on the assumption that moving stand 16 is
at its bottom dead center. By this operation, first lever 18 is turned and
support point 20 is moved in the direction of the arrow a, so that second
lever 22 is pulled by support point 20 so as to move in the direction of
arrow b (FIG. 5) along guide 24. Thus frictional member 21 is moved out of
contact with fixed stand 17. At the same time, a protrusion 30a of lever
30 pushes lock lever 25 in the direction of the arrow c (FIG. 5) to
thereby unlock locking portion 25a from member 29. Thus moving stand 16
becomes free and simultaneously detector switch 31 is switched on.
Under these circumstances, moving stand 16 is moved upwardly by the
cooperation of the respective pins 8 and guide grooves 17a. If stand
portion 16a and operation knob 11 are released from hand the, support
point 20 is rotated in the direction opposite to the arrow a by the
resiliency of spring 23, first lever 30 is returned to its initial
position, and second lever 22 is moved along guide 24. Thus frictional
member 21 is pushed against fixed stand 17 so that the frictional force
prevents the moving stand 16 from falling. At the same time, detector
switch 31 is switched off.
As described above, moving stand 16 and hence camera 2 can be moved
vertically by a simple operation to perform zooming easily.
Moving stand 16 is then moved to its bottom dead center by the above
operation. If stand portion 16a and knob 11 are then released from hand H,
levers 30 and 22 perform the above operations and locking lever 25 is
moved by spring 27 in the direction opposite to the arrow c to be engaged
with member 29. This causes moving stand 16 to be completely locked, so
that although large force or vibrations are applied to the apparatus when
same is transported or housed, moving stand 16 is prevented from moving.
As described above, in this particular embodiment, when locking is released
and camera 2 is moved vertically, detector switch 31 is switched on, so
that the signal from microphone 18 is grounded by the circuit shown in
FIG. 7. Thus a null input is applied to amplifier 32 and speaker SP
produces no sound. Thus mechanical noise due to locking and/or unlocking
of some members and noise from sliding of some members are not produced
from speaker SP.
In the locked state, detector switch 31 is off and the signal from the
microphone 18 is amplified as it is and input to speaker SP. Thus a
lecturer's voice is transmitted as it is along with his picture to the
audience.
In the above embodiment, the timing of muting microphone 18 depends on
change switch 31. A similar effect may be obtained by sensing the movement
of the supporting member using a photosensor, a magnetic sensor or the
like.
In a further application of this invention, noise due to the switching of
video change switch 6a (FIG. 1) may be eliminated by interlock with
switch 6a.
In order to allow release, in a simple operation by one hand, of the
locking mechanism of the support member which supports the photoelectric
conversion unit and continuous change of the position where the conversion
unit is supported, the particular embodiment includes a zooming lock
mechanism which includes levers 30, 22, etc., a complete lock mechanism
which includes lock lever 25, member 29, etc., which locks moving stand 16
at the bottom dead center. The latter or complete lock mechanism for
transportation and housing of the apparatus may be of the screw type. The
reason for this is that the number of events of transportation and/or
housing is relatively small, release of the locking members by simple
operation is possible in actual use, and its operability is not damaged.
As described above, this embodiment is constructed so that the movement of
the photoelectric conversion unit is detected, at which time the output
from the voice input unit is grounded. Thus this embodiment has a
simple-low-cost structure to cut off uncomfortable mechanical noise which
would otherwise be produced at the transportation of the apparatus.
In addition, this embodiment has a very simple structure which includes two
kinds of locking means for locking the photoelectric conversion unit at a
desired position in a predetermined range of movements and for locking the
photoelectric conversion unit at a specific position. Thus the reading
magnification of the picture reading apparatus can be changed continuously
by simple hand operation. Thus a less expensive, more reliable,
higher-operability picture reading apparatus is provided which has high
durability in transportation/housing.
(Fourth Embodiment)
A picture reading apparatus could be thought out which includes, for
example, a rotatable camera having a photoelectric conversion unit to read
a material not put on the document plate, for example, a picture on a
blackboard on the wall, in addition to a material placed on the document
plate. In a picture reading apparatus having such a function, however, a
picture output to the monitor during movement of the camera would move
grotesquely and very unseemly.
The fourth embodiment of this invention is intended to provide a simple
structure picture reading apparatus which eliminates the above drawbacks
and which is capable of, for example, interrupting or lowering the picture
output to the monitor display so as not to be unseemly during rotation of
the camera.
FIGS. 8 and 9 are perspective views showing the structure of the fourth
embodiment of this invention. In FIGS. 8, 9, the components having
functions similar to those of the components of the previous embodiments
are similarly numbered and no similar description will be repeated.
In FIGS. 8 and 9, camera unit 2' is disposed opposite to and above document
plate 1. The camera unit is rotatably supported at horizontal supporting
member 3' and can be rotated in the direction of the arrow. In this
embodiment, the range of pickup or photographing area on plate 1 can be
changed by moving camera unit 2' vertically by means of vertical
supporting member 4.
Camera unit 2' is also turnable in the vertical plane, in the direction of
the arrow, as shown in FIGS. 8 and 9, relative to horizontal supporting
member 3'. For example, a picture on a blackboard 116 disposed at a
position such as shown in FIG. 9 can be picked up by turning camera unit
2' so as to face the image.
FIG. 10 shows the structure of a control circuit of the apparatus of this
embodiment. Reference numeral 121 denotes a power source plug. An AC
adapter 122 is used to supply a DC power to camera unit 2', monitor
display 5 and other components so that individual power sources are not
needed. When mode change switch 6a is switched on, a synthesizer 123
synthesizes a picture, for example, on equal terms, from a video switch
input from external input terminal 12 and a video output signal from
camera unit 2', and outputs the result. It can also output only a video
output signal from camera unit 2' by switching off switch 6a.
Reference numeral 124 denotes a distributor. When mode change switch 6a is
switched off, a switching circuit 125 interrupts an external picture
signal input from external input terminal 12 to stop feed to distributor
124. When mode change switch 6a is on and the external video signal is
supplied from input terminal 12, distributor 124 distributes the video
signal to monitor display 5 and external monitor output terminal 13.
In this embodiment, such control circuit includes a device 130 in the
circuit of a picture output signal line 126 from camera unit 2' for
lowering the level of the picture signal. In this embodiment, the picture
signal level lowering device employs an interception unit which includes a
switching mechanism having two connection positions. A rotary terminal
chip 131 turns around a center 0 in response to the turning of camera unit
2'. An arcuate fixed terminal chip 132 is disposed opposite to rotary chip
131.
Now assume that camera unit 2' faces an original document 1a on plate 1, as
shown in FIG. 8, and outputs its picture as a video signal, a connection
member 133 of rotary terminal chip 131 is put into contact with, for
example, a first contact 132A of fixed terminal chip 132. Under these
circumstances, when camera unit 2' proceeds to its turning operation,
rotary terminal chip 131 responds by which connection member 133 of chip
131 moves to a non-contact position where member 133 does not contact
fixed terminal chip 132, namely, to a non-contact position 132C between
first and second contacts 132A and 132B of fixed terminal chip 132, at
which position the video output signal Video from camera unit 2' is
interrupted and a zero-level video signal is output.
When the turning of camera unit 2' then ends and camera unit 2' faces
blackboard 116 as shown in FIG. 9, rotary terminal chip 131 is turned.
Thus connection member 133 of rotary terminal chip 131 in turn contacts
second contact 132B of fixed terminal chip 132, and the output signal
Video from camera 2' is again supplied to monitor display 5. As described
above, during turning of camera unit 2', no video signal is output to
display 5, so that a useless unseemly picture occurring during movement of
the camera is interrupted from the user.
In the above, the video output signal from camera unit 2' has been
described as being intercepted by interception unit 130. Alternatively,
such an interception unit may be provided, for example, between AC adapter
122 and camera unit 2', or an attenuator, for example, may be provided
instead of the interception unit which attenuator operates simultaneously
with the movement of camera unit 2' to lower the level of the picture
output signal to below a predetermined level so as to prevent the video
output signal from being displayed by monitor display 6 during movement of
camera unit 2'. Furthermore, during movement of camera unit 2', a picture
output, for example, of characters for other displays instead of the video
output signal from camera unit 2' may be supplied to monitor display 5.
Also, a timer switch may be provided to stop supply of the video output
signal for a predetermined time at the same time with the turning of the
camera. Even if the video output signal is displayed at the monitor
display during movement of camera 2', the front of display 5 may be
shielded, for example, by a liquid crystal shutter, during movement of
camera unit 2' to prevent display of an unseemly picture at display 5
during movement of the camera.
While in the above embodiment there are two stop positions where the
turning of camera unit 2' is stopped to pick up the image; the position
where the camera faces the document plate 1 and the position where the
camera faces the blackboard on the side. This invention is not limited to
these positions. This invention is also applicable to a device which picks
up images at three or more positions.
Similarly, an unseemly display may be prevented, for example, even during
vertical or other movements of the camera unit as in the particular
embodiments.
As described above, according to this embodiment, during turning of the
camera, the video output signal from the camera photoelectric conversion
unit is not supplied at its normal level to the monitor display, so that a
useless, unseemly picture picked up by the camera during turning of the
camera is erased or suppressed to give no offense to the user.
In the picture reading apparatus shown in FIG. 1 the camera input unit and
the support member are disposed perpendicular to a plane of documents
placed on the plate 1. In this arrangement, the picture of a broad
document appears on the entire screen of the monitor. Therefore, if a long
document is displayed at the monitor, for example, only a central portion
of the document is displayed and other portions cannot be monitored. If
the document is slid back and forth in order to display at the monitor
those portions except for the central portion, it is necessary to prevent
interference of the leading end of the document with the vertical
supporting member. This would increase the distance between the camera and
the vertical support and reduce the strength of the mechanism.
Alternatively, if a structure is employed in which the camera unit can be
slid back and forth instead of the document, it would become complicated
and the cost would increase. Furthermore, when the operator operates the
mode change switch, the operator's hands would be displayed unseemly at
the monitor. The monitor itself may appear unseemly when viewed at its
front.
According to this embodiment, vertical supporting member 4 is disposed, as
shown in a plan view in FIG. 11. Therefore, even if a broad document 1a is
slid right and left, it would not interfere with vertical supporting
member 4. Furthermore, if a long document 1b is moved back and forth,
similarly no interference occurs. This arrangement allows horizontal
supporting member 3 to be shortened. In this case, even if the length of
the horizontal supporting member 3 is shortened, the document may be moved
freely for that quantity back and forth and left and right, so that there
is no problem in use. Especially, in an apparatus of this type, it is
desirable that deviations of the ends of horizontal and vertical
supporting members 3 and 4 (the camera is fixed to the end of horizontal
supporting member 3) are small and that the apparatus is small-sized,
light and is easy to transport when used in lecture, discourse or the
like. When a load including the weights of the camera, the photoelectric
conversion unit or the like acts on the end of horizontal supporting
member 3 as a cantilever, the end deviation increases in proportion to the
third power of the distance between the horizontal and vertical supporting
members 3 and 4, so that it will be understood to be advantageous that
horizontal supporting member 3 can be shortened. The end of vertical
supporting member 4 is deviated in proportion to the third power of the
height of vertical supporting member 4 because the moment due to the load
acts on the end of the vertical supporting member 4 to which horizontal
supporting member 3 is connected. Thus it would be necessary to increase
the entire size and weight of both supporting members 4 and 5 in order to
consider the strength of the vertical and horizontal supporting members in
their own ways to suppress the deviation. However, according to this
embodiment, the horizontal supporting member 4 can be shortened, so that a
lighter, less expensive apparatus can be provided which occupies a reduced
space, and has an improved performance.
As described above, according to this embodiment, horizontal and vertical
supporting members 3 and 4 are disposed slanted to camera unit 2', so that
even if a long or broad document is slid back and forth and right and
left, it can avoid interference with vertical supporting member 4.
Further, since the distance between camera unit 2' and vertical supporting
member 4 can be set short, the strength of horizontal supporting member 3,
etc., may be sufficiently assured. While in this embodiment the vertical
supporting member has been shown as being provided at the upper right
corner as shown in FIG. 11, this invention is not limited to this. For
example, it may be provided at one of other corners or inwardly from that
corner.
The apparatus having the following advantages is thus provided. When the
document may touch the vertical supporting member when for example, the
length of the vertical supporting member is adjusted or mode change switch
6a, etc., are operated, the operator's hand is not displayed on the
monitor, so that the display does not give an unseemly display. Further,
the picture reading apparatus provides an easy-to-see built-in monitor 5,
occupies a reduced space, is lighter, less expensive and is easy to use
and transport.
As described above, according to the fourth embodiment of this invention,
in addition to the above-mentioned advantage, the following advantageous
are provided. By the disposition where the supporting means is slanted to
the reading means, the distance between the camera input unit and the
vertical supporting member is reduced, the entire strength is increased,
the vertical supporting member does not interfere with an original
document, broad or long, even if the document is slid right and left and
back and forth, the operator's hand will not be displayed on the monitor,
the monitor is easy to see, and the operability of the apparatus is
increased.
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