US4450488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for recording continuous-play and stop-motion signal
Assignee: Discovision Associates
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Filing: 1983-02-28
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Granted: 1984-05-22
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Expires: 2003-02-28
Abstract
Abstract An improved method and apparatus for recording and playing back a video signal on a video disc, such that selected video frames can be played back in a stop-motion fashion, with accompanying audio. Each stop-motion video frame is recorded on a single recording track on the disc, and an associated digitized stop-motion audio signal is combined with a continuous-play video signal and recorded on a plurality of preceding tracks. During playback, the tracks recording the continuous-play video signal are first scanned, to recover and display the continuous-play video frames, and to recover and enter into a memory the digitized stop-motion audio signal. The track recording the corresponding stop-motion video signal is then scanned, in a repeated fashion, to provide a stop-motion display of the video frame, while the stop-motion audio signal is extracted from the memory and converted back to its original analog format, for playback along with the stop-motion video frame.
Inventors
- 👤 Scott M. Golding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:38
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00007; G11B20/10; G11B20/10527; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/915; H04N5/9155; H04N9/00; H04N9/79; H04N9/80; H04N9/802
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
98 words
A method of recording a video signal and a stop-motion audio signal on a record medium, the video signal representing a plurality of continuous-play video frames and a stop-motion video frame associated with the stop-motion audio signal, the method comprising steps of: combining the stop-motion audio signal and the portion of the video signal representing the continuous-play video frames, to form a composite signal; recording the composite signal on a first portion of the record medium; and recording the portion of the video signal representing the stop-motion video frame on a second downstream portion of the record medium.
Claim 2
Independent Claim
98 words
A method of recording a video signal and a stop-motion audio signal on a record medium, the video signal representing a plurality of continuous-play video frames and a stop-motion video frame associated with the stop-motion audio signal, the method comprising steps of: combining the stop-motion audio signal and the portion of the video signal representing the continuous-play video frames, to form a composite signal; recording the composite signal on a first portion of the record medium; and recording the portion of the video signal representing the stop-motion video frame on a second downstream portion of the record medium.
Claim 3
Dependent Claim
50 words
A method as defined in claim 1, wherein: the stop-motion audio signal is on analog signal; and the method further includes a preliminary step of converting the analog stop-motion audio signal to a corresponding digital stop-motion audio signal before being combined with the video signal in the step of combining.
Claim 4
Dependent Claim
44 words
A method as defined in claim 2, wherein the step of converting includes a step of time-compressing the digital stop-motion audio signal, whereby the digital audio signal recorded on the record medium has a shorter time duration than the original analog stop-motion audio signal.
Claim 5
Dependent Claim
59 words
A method as defined in claim 3, wherein the step of time-compressing includes steps of: entering the data forming the digital stop-motion audio signal into a memory device at a first rate; and extracting the data from the memory at a second rate, the second rate being higher than the first rate, to produce the time-compressed digital audio signal.
Claim 6
Dependent Claim
53 words
A method as defined in claim 1, wherein: the method further includes a preliminary step of modulating an audio subcarrier signal in accordance with the stop-motion audio signal; and the step of combining includes a step of summing together the modulated audio subcarrier signal and the video signal, to form the composite signal.
Claim 7
Dependent Claim
91 words
A method as defined in claim 1, wherein: the record medium is a video disc, and signals are recorded in the disc in a succession of substantially circular and concentric recording tracks each track recording a portion of the video signal representing a single video frame; the composite signal, representing the continuous-play video frames and the stop-motion audio signal, is recorded on a prescribed plurality of recording tracks; and the video signal representing the stop-motion video frame is recorded on a prescribed recording track following the tracks recording the composite signal.
Claim 8
Dependent Claim
60 words
A method as defined in claim 6, wherein: the method records a plurality of composite signals and a corresponding plurality of stop-motion video frames; and each stop-motion video frame is recorded on a prescribed, separate recording track, and each composite signal is recorded on a prescribed plurality of recording tracks preceding the prescribed track for recording the stop-motion video frame.
Claim 9
Dependent Claim
101 words
Apparatus for recording a video signal and a stop-motion audio signal on a record medium, the video signal representing a plurality of continuous-play video frames and a stop-motion video frame associated with the stop-motion audio signal, the apparatus comprising: means for combining the stop-motion audio signal and the portion of the video signal representing the continuous-play video frames, to form a composite signal; means for recording the composite signal on a first portion of the record medium; and means for recording the portion of the video signal representing the stop-motion video frame on a second downstream portion of the record medium.
Claim 10
Dependent Claim
101 words
Apparatus for recording a video signal and a stop-motion audio signal on a record medium, the video signal representing a plurality of continuous-play video frames and a stop-motion video frame associated with the stop-motion audio signal, the apparatus comprising: means for combining the stop-motion audio signal and the portion of the video signal representing the continuous-play video frames, to form a composite signal; means for recording the composite signal on a first portion of the record medium; and means for recording the portion of the video signal representing the stop-motion video frame on a second downstream portion of the record medium.
Claim 11
Dependent Claim
47 words
Apparatus as defined in claim 8, wherein: the stop-motion audio signal is an analog signal; and the apparatus further includes means for converting the analog stop-motion audio signal to a corresponding digital stop-motion audio signal before being combined with the video signal by the means for combining.
Claim 12
Dependent Claim
69 words
Apparatus as defined in claim 9, and further including: a digital memory; means for entering the digital stop-motion audio signal into the memory at a first rate; and means for extracting the digital signal from the memory at a second rate, the second rate being higher that the first rate, to produce a time-compressed digital stop-motion audio signal for combining with the video signal by the means for combining.
Claim 13
Dependent Claim
46 words
Apparatus as defined in claim 8, wherein: the apparatus further includes means for modulating an audio subcarrier signal in accordance with the stop-motion audio signal; and the means for combining sums together the modulated audio subcarrier signal and the video signal, to form the composite signal.
Claim 14
Dependent Claim
177 words
Apparatus for recording a video signal and a stop-motion audio signal on a record medium, the video signal representing a plurality of continuous-play video frames and a stop-motion video frame associated with the stop-motion audio signal, the apparatus comprising: means for converting the stop-motion audio signal into a corresponding digital audio signal; a digital memory: means for entering the digital audio signal into the memory at a first rate; means for extracting the digital audio signal from the memory at a second rate, the second rate being higher than the first rate, to produce a time-compressed digital audio signal; modulator means for modulating an audio subcarrier in accordance with the time-compressed audio signal; summing means for summing together the modulated audio subcarrier and the portion of the video signal representing the continuous-play video frames, to form a composite signal; means for recording the composite signal on a first portion of the record medium; and means for recording the portion of the video signal representing the stop-motion video frame on a second downstream portion of the record medium.
Claim 15
Dependent Claim
177 words
Apparatus for recording a video signal and a stop-motion audio signal on a record medium, the video signal representing a plurality of continuous-play video frames and a stop-motion video frame associated with the stop-motion audio signal, the apparatus comprising: means for converting the stop-motion audio signal into a corresponding digital audio signal; a digital memory: means for entering the digital audio signal into the memory at a first rate; means for extracting the digital audio signal from the memory at a second rate, the second rate being higher than the first rate, to produce a time-compressed digital audio signal; modulator means for modulating an audio subcarrier in accordance with the time-compressed audio signal; summing means for summing together the modulated audio subcarrier and the portion of the video signal representing the continuous-play video frames, to form a composite signal; means for recording the composite signal on a first portion of the record medium; and means for recording the portion of the video signal representing the stop-motion video frame on a second downstream portion of the record medium.
References Cited (Backward Citations)
US3908080A
Cited
US4383279A
Cited
USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |