Program-signal recording and reproducing apparatus
First Claim
1. A program-signal recording and reproducing apparatus comprising:
- first means for recording a program signal on a recording medium;
second means for reproducing the program signal from the recording medium;
third means for generating first time information in accordance with lapse of time;
fourth means for generating second time information from the program signal reproduced by the second means, the second time information representing one of (1) a time at which the program signal was recorded by the first means and (2) a time at which the program signal was broadcasted; and
fifth means for superimposing on-screen information on the program signal reproduced by the second means, the on-screen information representing (1) a picture portion indicative of a time, (2) a first mark positionally corresponding to the first time information generated by the third means, and (3) a second mark positionally corresponding to the second time information generated by the fourth means.
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Accused Products
Abstract
A program signal is recorded on a recording medium. The program signal is reproduced from the recording medium. First time information is generated in accordance with lapse of time. Second time information is generated from the reproduced program signal. The second time information represents one of (1) a time at which the program signal was recorded and (2) a time at which the program signal was broadcasted. On-screen information is superimposed on the reproduced program signal. The on-screen information represents (1) a picture portion indicative of a time, (2) a first mark positionally corresponding to the first time information, and (3) a second mark positionally corresponding to the second time information.
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Citations
10 Claims
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1. A program-signal recording and reproducing apparatus comprising:
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first means for recording a program signal on a recording medium;
second means for reproducing the program signal from the recording medium;
third means for generating first time information in accordance with lapse of time;
fourth means for generating second time information from the program signal reproduced by the second means, the second time information representing one of (1) a time at which the program signal was recorded by the first means and (2) a time at which the program signal was broadcasted; and
fifth means for superimposing on-screen information on the program signal reproduced by the second means, the on-screen information representing (1) a picture portion indicative of a time, (2) a first mark positionally corresponding to the first time information generated by the third means, and (3) a second mark positionally corresponding to the second time information generated by the fourth means. - View Dependent Claims (2)
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3. A program-signal recording and reproducing apparatus for recording a program signal on a recording medium, and reproducing an already-recorded portion of the program signal which is being recorded on the recording medium, the apparatus comprising:
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time information generating means for generating time information in accordance with lapse of time;
recording means for recording the time information generated by the time information generating means or time information indicating time at which the program signal is broadcasted on the recording medium together with the program signal;
a head retrieval command input means for performing a program head retrieval command; and
first head retrieval reproduction means for, when the program head retrieval command is performed by the head retrieval command input means, obtaining present time information generated by the time information generating means and performing head retrieval reproduction of the program signal recorded at time of 00-minute or 30-minute in an hour which is previous to the present time represented by the obtained present time information. - View Dependent Claims (4)
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5. A program-signal recording and reproducing apparatus comprising:
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first means for recording a program signal on a recording medium;
second means for generating first time information representing the present time;
third means for generating second time information representing one of (1) a time at which the program signal was recorded by the first means and (2) a time at which the program signal was broadcasted;
fourth means for determining a specified time point which precedes the present time represented by the first time information generated by the second means; and
fifth means for finding a segment of the program signal on the recording medium according to the specified time point determined by the fourth means and the second time information generated by the third means, the program-signal segment relating to the second time information corresponding to the specified time point, and for reproducing the found segment and subsequent segments of the program signal from the recording medium. - View Dependent Claims (6, 7)
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8. A program-signal recording and reproducing apparatus comprising:
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first means for recording a first program signal on a recording medium while leaving only a latest temporally-continuous portion of the first program signal in the recording medium as a cached portion;
second means for generating first time information representing the present time;
third means for generating second time information representing one of (1) a time at which the first program signal was recorded by the first means and (2) a time at which the first program signal was broadcasted;
fourth means for determining a specified time point which precedes the present time represented by the first time information generated by the second means;
fifth means for accepting a head-retrieval command;
sixth means responsive to the head-retrieval command accepted by the fifth means for finding a segment of the latest temporally-continuous portion of the first program signal on the recording medium according to the specified time point determined by the fourth means and the second time information generated by the third means, the program-signal segment relating to the second time information corresponding to the specified time point, and for reproducing the found segment and subsequent segments of the program signal from the recording medium during a cache playback mode of operation;
seventh means for recording a second program signal on the recording medium in response to a designated record start timing; and
eighth means responsive to the head-retrieval command accepted by the fifth means for reproducing the second program signal from the recording medium during a time shift playback mode of operation. - View Dependent Claims (9, 10)
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Specification