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Claims  |
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What is claimed is:
1. A video tape recording and reproducing device comprising:
a video head;
means for receiving a plurality of video inputs corresponding to respective
television programs;
means, coupled to said receiving means, for providing a plurality of
recording signals, each of the recording signals corresponding to a
respective one of said video inputs;
means for selecting one of said plurality of recording signals;
means for storing said plurality of recording signals except said selected
recording signal, said storing means including means for attaching a
digital identifier to each of the recording signals to be stored to make
stored recording signals distinguishable from the selected recording
signal;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals;
means for recording said multiplexed signal on said video head;
a separating circuit, coupled to said video head, for separating one of
said plurality of recording signals from a recorded multiplexed signal,
said separating circuit including means for detecting the identifier in
the multiplexed signal; and
an output circuit coupled to said separating circuit for providing the
selected signal to an external device.
2. A video tape recording and reproducing device comprising:
a video head;
means for receiving a plurality of video inputs corresponding to respective
television programs;
means, coupled to said receiving means, for providing a plurality of
recording signals, each of the recording signals corresponding to a
respective one of said video inputs;
means for selecting one of said plurality of recording signals;
means for storing said plurality of recording signals except said selected
recording signal;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals;
means for recording said multiplexed signal on said video head;
a separating circuit, coupled to said video head, for separating one of
said plurality of recording signals from a recorded multiplexed signal;
an output circuit coupled to said separating circuit for providing the
selected signal to an external device; and
timer circuit means for presetting a recording start time and a recording
end time separately for each of the provided plurality of recording
signals, said timer circuit means providing a multiple recording operation
mode signal to said multiplexing circuit means to activate said
multiplexing circuit means during a multiple recording time period during
which time period more than one recording time periods overlap, each
recording time period having preset recording start and end times and
corresponding to each one of the provided plurality of recording signals,
and deleting said multiple recording operation mode signal during a single
recording time period during which time period said recording time periods
do not overlap.
3. A video tape recording and reproducing device for recording a
multiplexed signal which simultaneously represents a combined plurality of
television programs when in a recording mode and for reproducing any of
the plurality of recorded television programs when in a reproducing mode,
the device comprising:
a plurality of tunable means for respectively receiving the plurality of
television programs and providing a plurality of respective recording
signals when in the recording mode;
means for selecting one of said plurality of recording signals during the
recording mode;
means for storing said plurality of recording signals except for a selected
recording signal, said storing means including means for attaching a
digital identifier to each of the recording signals to be stored to make
the stored recording signal distinguishable from the selected recording
signal;
means, coupled to said storing means, for reading out stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals when in the recording mode;
recording means including a write head for recording said multiplexed
signal on a video tape;
reading means including a read head, coupled to the recording means, for
reading said multiplexed signal from the video tape when in the
reproducing mode;
separating circuit means, coupled to the reading means, for separating one
of said plurality of recording signals from said multiplexed signal, said
separating circuit means including means for detecting the identifier in
the multiplexed signal; and
means, coupled to said separating circuit means, for providing said
selected recording signal to an output circuit to which a reproduction
device can be coupled.
4. A video tape recording device for recording a multiplexed signal which
simultaneously represents a plurality of television programs on a video
tape, the device comprising:
a plurality of tunable means for receiving means plurality of television
programs and for providing a plurality of recording signals each
corresponding to a respective television program;
means for selecting one of said plurality of recording signals during a
recording mode;
means for storing said plurality of recording signals except for a selected
one of the recording signals, said storing means including means for
attaching a digital identifier to each of the recording signals to be
stored to make the stored recording signal distinguishable from the
selected recording signal;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals; and
recording means including a write head, coupled to the multiplexing circuit
means, for recording said multiplexed signal on the video tape.
5. A video tape reproducing device for reproducing a single television
program from a video tape having a multiplexed signal recorded thereon
which simultaneously represents a combined plurality of television
programs and which signal has therein a digital identifier for identifying
one of the plurality of television programs, the device comprising:
reading means having a read head for reading the multiplexed signal from
the video tape;
means for storing said multiplexed signal in a storage medium;
separating circuit means, coupled to said storing means, for reading out
said multiplexed signal at a predetermined time interval to separate one
of the recording signals corresponding to the single one of said plurality
of television programs from said multiplexed signal, the separating
circuit means including means for detecting said identifier; and
means, coupled to the separating circuit means, for providing the separated
recording signal to an output circuit coupled to display means for
producing the single television program.
6. The device of claim 3, wherein the multiplexing circuit means and
separating circuit means comprise a common circuit which is responsive to
the plurality of tunable means which common circuit functions as the
multiplexing circuit means at times when the device is in the recording
mode and which common circuit is responsive to the reading means and which
common circuit functions as the separating circuit means at times when the
device is in the reproducing mode, the means for attaching a digital
identifier being inactive during the reproducing mode.
7. The device of claim 3, wherein the multiplexing circuit means and the
separating circuit means are substantially separated and distinct from one
another.
8. The device of claim 3,
wherein the multiplexing circuit means includes control circuit means for
controlling the storing of said provided recording signals in relation to
said selected recording signal.
9. A video tape recording and reproducing device for recording a
multiplexed signal which simultaneously represents a combined plurality of
television programs when in a recording mode and for reproducing any of
the plurality of recorded television programs when in a reproducing mode,
the device comprising:
a plurality of tunable means for respectively receiving the plurality of
television programs and providing a plurality of respective recording
signals when in the recording mode;
means for selecting one of said plurality of recording signals during the
recording mode;
means for storing said plurality of recording signals by specifying
distinguishable memory addresses for each of the recording signals;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals when in the recording mode, the multiplexing circuit means
including means for setting the frequency of the alternate switching of
the multiplexing circuit means in reference to the scanning frequency of
one of two interlaced fields of an NTSC composite video signal;
recording means including a write head for recording said multiplexed
signal on a video tape;
reading means including a read head, coupled to the recording means, for
reading said multiplexed signal from the video tape when in the
reproducing mode;
separating circuit means, coupled to the reading means, for separating one
of said plurality of recording signals from said multiplexed signal; and
means, coupled to said separating circuit means, for providing said
selected recording signal to an output circuit to which a reproduction
device can be coupled.
10. A video tape recording and reproducing device for recording a
multiplexed signal which simultaneously represents a combined plurality of
television programs when in a recording mode and for reproducing any of
the plurality of recorded television programs when in a reproducing mode,
comprising:
a plurality of tunable means for respectively receiving the plurality of
television programs and providing a plurality of respective recording
signals when in the recording mode;
means for selecting one of said plurality of recording signals during the
recording mode;
means for storing said plurality of recording signals, the storing means
including means for synchronizing said provided recording signals with the
corresponding synchronizing signals and deriving distinguishable memory
addresses for each of the recording signals to store said provided
recording signals;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals when in the recording mode, said multiplexing circuit means
including means for alternately switching in association with the
corresponding synchronizing signals;
recording means including a write head for recording said multiplexed
signal on a video tape;
reading means including a read head, coupled to the recording means, for
reading said multiplexed signal from the video tape when in the
reproducing mode;
separating circuit means, coupled to the reading means, for separating one
of said plurality of recording signals from said multiplexed signal; and
means, coupled to said separating circuit means, for providing said
selected recording signal to an output circuit to which a reproduction
device can be coupled.
11. The device of claim 10, further including means for setting the
corresponding synchronizing signal in reference to a vertical
synchronizing signal of an NTSC composite video signal.
12. The device of claim 10, wherein the storing means has a plurality of
sections, each section storing a respective one of said recording signals.
13. A video tape recording device for recording a multiplexed signal which
simultaneously represents a combined plurality of television programs on a
video tape, the device comprising:
a plurality of tunable means for receiving said plurality of television
programs and for providing a plurality of recording signals each
corresponding to a respective television program;
means for selecting one of said plurality of recording signals during a
recording mode;
means for storing said plurality of recording signals except for a selected
one of the recording signals, said storing means including means for
attaching a digital identifier to each of the recording signals to be
stored to make the stored recording signals readily distinguishable from
the selected recording signal;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of recording
signals, the multiplexing circuit means including control circuit means,
responsive to the storing means and to the plurality of tunable means, for
generating control signals for controlling the reading out of said stored
recording signals in association with said selected recording signal; and
recording means including a write head, coupled to the multiplexing circuit
means, for recording said multiplexed signal on the video tape.
14. A video tape recording device for recording a multiplexed signal which
simultaneously represents a combined plurality of television programs on a
video tape, the device comprising:
a plurality of tunable means for receiving said plurality of television
programs and for providing a plurality of recording signals each
corresponding to a respective television program;
means for selecting one of said plurality of recording signals during a
recording mode;
means for storing said plurality of recording signals, said storing means
including means for specifying distinguishable memory addresses for each
of the recording signals;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals, the multiplexing circuit including;
means for setting the frequency of the alternate switching of the
multiplexing means in reference to the scanning frequency of one of two
interlaced fields of an NTSC composite video signal, and
control circuit means, responsive to the storing means and to the plurality
of tunable means, for generating control signals for controlling the
reading out of said stored recording signals in association with said
selected recording signal; and
recording means including a write head, coupled to the multiplexing circuit
means, for recording said multiplexed signal on the video tape.
15. A video tape recording device for recording a multiplexed signal which
simultaneously represents a plurality of television programs on a video
tape, the device comprising:
a plurality of tunable means for receiving said plurality of television
programs and for providing a plurality of recording signals each
corresponding to a respective television program;
means for selecting one of said plurality of recording signals during a
recording mode;
means for storing said plurality of recording signals, the storing means
including means for synchronizing said provided recording signals with
corresponding synchronizing signals and deriving distinguishable memory
addresses for each of the recording signals to store said provided
recording signals;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals,
said multiplexing circuit means including means for alternately switching
in association with the corresponding synchronizing signals; and
recording means including a write head, coupled to the multiplexing circuit
means, for recording said multiplexed signal on the video tape.
16. The device of claim 15, further including
means for setting the corresponding synchronizing signal in reference to a
vertical synchronizing signal of an NTSC composite video signal.
17. The device of claim 15, wherein the storing means has a plurality of
sections, each section storing a corresponding one of the stored recording
signals.
18. A video tape recording and reproducing device for recording a
multiplexed signal which simultaneously represents a combined plurality of
television programs when in a recording mode and for reproducing any of
the plurality of recorded television programs when in a reproducing mode,
the device comprising:
a plurality of tunable means for respectively receiving the plurality of
television programs and providing a plurality of respective recording
signals when in the recording mode;
means for selecting one of said plurality of recording signals during the
recording mode;
means for storing said plurality of recording signals except for a selected
one of the recording signals, said storing means including means for
attaching a digital identifier to each of the recording signals to be
stored to make the stored recording signals distinguishable from the
selected recording signal;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals when in the recording mode;
recording means including a write head for recording said multiplexed
signal on video tape;
reading means including a read head, coupled to the recording means, for
reading said multiplexed signal from the video tape when in the
reproducing mode;
separating circuit means, coupled to the reading means, for separating one
of said plurality of recording signals from said multiplexed signal, said
separating circuit means including means for detecting the identifiers in
the multiplexed signal and means, coupled to the reading means, for
storing the read multiplexed signal;
control circuit means for generating control signals for controlling the
reading of the stored multiplexed signal from the storing means at
predetermined times; and
means, coupled to said separating circuit means, for providing said
selected recording signal to an output circuit to which a reproduction
device can be coupled.
19. A video tape recording and reproducing device for recording a
multiplexed signal which simultaneously represents a combined plurality of
television programs when in a recording mode and for reproducing at least
one of the plurality of recorded television programs when in a reproducing
mode, the device comprising:
a plurality of tunable means for respectively receiving the plurality of
television programs and providing a plurality of respective recording
signals when in the recording mode;
means for selecting one of said plurality of recording signals during the
recording mode;
means for storing said plurality of recording signals, the storing means
including means for specifying distinguishable memory addresses for each
of the recording signals;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals when in the recording mode;
recording means including a write head for recording said multiplexed
signal on a video tape;
reading means including a read head, coupled to the recording means, for
reading said multiplexed signal from the video tape when in the
reproducing mode;
separating circuit means, coupled to the reading means, for separating one
of said plurality of recording signals from said multiplexed signal, said
separating means including means, coupled to the reading means, for
storing the read multiplexed signal;
control circuit means for generating control signals for controlling the
reading of the stored multiplexed signal from the storing means at
predetermined times, said control circuit means including means for
setting said predetermined times in reference to the scanning frequency of
one of two interlaced fields of an NTSC composite video signal; and
means, coupled to said separating circuit means, for providing said
selected recording signal to an output circuit to which a reproduction
device can be coupled.
20. A video tape recording and reproducing device for recording a
multiplexed signal which simultaneously represents a combined plurality of
television programs when in a recording mode and for reproducing any of
the plurality of recorded television programs when in a reproducing mode,
the device comprising:
a plurality of tunable means for respectively receiving the plurality of
television programs and providing a plurality of respective recording
signals when in the recording mode;
means for selecting one of said plurality of recording signals during the
recording mode;
means for storing said plurality of recording signals, the storing means
including means for specifying distinguishable memory addresses for each
of the recording signals;
means, coupled to said storing means, for reading out the stored recording
signals;
multiplexing circuit means, coupled to said reading out means and said
selecting means, for alternately switching between the read out recording
signals and said selected recording signal to generate a multiplexed
signal simultaneously representing a combined plurality of the recording
signals when in the recording mode;
recording means including a write head for recording said multiplexed
signal on a video tape;
reading means including a read head, coupled to the recording means, for
reading said multiplexed signal from the video tape when in the
reproducing mode, the recording multiplexed signal reading means including
means for synchronizing the recorded multiplexed signal with corresponding
synchronizing signals;
separating circuit means, coupled to the reading means, for separating one
of said plurality of recording signals from said multiplexed signal, the
separating circuit means including means, coupled to the reading means,
for storing the read multiplexed signal;
control circuit means for generating control signals for controlling the
reading of the stored multiplexed signal from the storing means at
predetermined times; and
means, coupled to said separating circuit means, for providing said
selected recording signal to an output circuit to which a reproduction
device can be coupled.
21. The device of claim 20, further including means for setting the
corresponding synchronizing signals in reference to a vertical
synchronizing signal of the NTSC composite video signal.
22. A video tape reproducing device for reproducing a single television
program from a video tape having a multiplexed signal recorded thereon
which simultaneously represents a combined plurality of television
programs, the device comprising:
reading means having a read head for reading the multiplexed signal from
the video tape;
means for storing the read multiplexed signal in a storage medium with
distinguishable memory addresses for each of the recorded signals in the
multiplexed signal;
separating circuit means, coupled to said storing means, for reading out
said multiplexed signal at a predetermined time interval to separate one
of the recording signals corresponding to the single one of the plurality
of television programs from the stored multiplexed signal, the separating
circuit means including:
control circuit means for generating control signals for controlling the
reading of the stored read multiplexed signal, the control circuit means
including means for deriving the distinguishable memory addresses of the
recorded signals in the multiplexed signal; and
means, coupled to the separating circuit means, for providing a separated
one of the recording signals to an output circuit coupled to display means
for producing the selected television program.
23. The device of claim 22, further including
means for setting said predetermined times in reference to the scanning
frequency of one of two interlaced fields of an NTSC composite video
signal.
24. The device of claim 22, wherein said separating circuit means includes
means for synchronizing the stored multiplexed signal with corresponding
synchronizing signals.
25. The device of claim 24, further including means for setting the
corresponding synchronizing signal in reference to a vertical
synchronizing signal of an NTSC composite video signal.
26. A method of recording a plurality of television programs on the same
length of a video tape when in a recording mode and for reproducing a
selected one of said plurality of television programs when in a
reproducing mode, the method comprising the steps of:
generating a plurality of recording signals, each corresponding to a
respective television program when in the recording mode;
selecting one of said plurality of recording signals;
storing said plurality of recording signals except for said selected
recording signal in a storage medium, the storing steps including
attaching a digital identifier to each of the stored recording signals to
be stored to make the stored recording signal distinguishable from the
selected reading signal;
reading out the stored recording signals from the storage medium;
alternately switching between the read out recording signals and the
selected recording signal to produce a multiplexed signal simultaneously
representing a combined plurality of recording signals;
recording said multiplexed signal on the video tape;
reading said multiplexed signal from the video tape when in the reproducing
mode;
reproducing a selected one of said plurality of recording signals from said
multiplexed signal, the reproducing step including detecting any
identifier in the read multiplexed signal; and
providing said reproduced recording signal to an external device for
displaying the corresponding television program.
27. The method of claim 26, wherein the multiplexed signal producing step
includes generating control signals for controlling the reading of the
stored recording signals in association with the selected recording
signal.
28. The method of claim 27,
wherein the storing substep includes storing the generated recording
signals in said storage medium in reference to said selected recording
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