Playback technique for an audio-video program wherein the video display is controlled by signals recorded as a part of the audio program
AssigneeWestinghouse Electric Corp.
InventorHarold B. Shutterly
Life of this patent
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Abstract
In an audio-video program consisting of time compressed segments of audio information in the format of TV lines and video change signals associated with one or more of the audio segments, and video information to be displayed in response to the video change signals stored in separate portions of a magnetic or video storage medium, the playback of video information is synchronized to the playback of audio information by the occurrence of the video change signals present in the recorded audio information.
Claims9
A method for reproducing the audio frames or fields and the video frames or fields of an audio/video program from sequential access storage media wherein the audio frames consist of audio lines of time compressed audio information in television line format and video change signals indicating the time for displaying the video frames corresponding to the audio, comprising the steps of:
- reproducing audio frames consisting of audio lines of time compressed audio information in television line format including video change signals indicating the time for displaying the video frames corresponding to the audio,
- detecting the presence of the video change signals in each reproduced audio frame, and
- reproducing the video frames corresponding to each reproduced audio frame in response to the detected video change signals.
Apparatus for the reproduction of the audio frames or fields and the video frames or fields of an audio/video program from the tracks of a sequential access storage medium wherein the audio frames consist of audio lines of time compressed audio information in a television line format, each audio frame recorded on a track and including one or more video change signals indicating the time for displaying associated video frames, each such audio track followed by a number of video tracks of associated video frames, the number of said video tracks corresponding to the number of video change signals present in the recorded audio track, comprising,
- an auxiliary audio storage device having an audio record/playback head associated therewith,
- an auxiliary video storage device having a video record/playback head associated therewith,
- a moving playback head associated with said audio/video program on said sequential access storage medium,
- first circuit means for transferring the audio frames reproduced by said moving playback head to said record/playback head associated with said auxiliary audio storage device for recording said audio frames on said auxiliary audio storage device,
- second circuit means for reproducing said audio frames from said auxiliary audio storage device,
- third circuit means for detecting video change signals present in the audio frames reproduced from said auxiliary audio storage device,
- fourth circuit means responding to said video change signal detected by said third circuit means by advancing said moving playback head for reproducing corresponding video frames, and
- fifth circuit means for transferring said reproduced video frames to said record/playback head associated with said auxiliary video storage device for recording said video frames on said auxiliary video storage device.
A method for reproducing the audio frames or fields and the video frames or fields of an audio/video program from sequential access storage media wherein the audio frames consist of audio lines of time compressed audio information in television line format and video change signals indicating the time for displaying the video frames corresponding to the audio, comprising the steps of,
- sequentially transferring the audio frames to an auxiliary audio storage medium, reproducing the audio frames transferred to the auxiliary audio storage medium, detecting the video change signals present in the audio frames reproduced from said auxiliary audio storage medium, and transferring the associated video frames from the sequential storage medium to an auxiliary video storage medium in response to the detection of the video change signals present in the audio frames reproduced from said auxiliary audio storage medium.
A method for reproducing the audio frames or fields and the video frames or fields of an audio/video program from sequential access storage media wherein the audio frames consist of audio lines of time compressed audio information in television line format and video change signals indicating the time for displaying the video frames corresponding to the audio, comprising the steps of,
- sequentially transferring the audio frames to an auxiliary audio storage medium,
- reproducing an initial portion of the audio information from the audio frame immediately prior to transferring the audio frame to said auxiliary audio storage medium,
- reproducing the audio frames transferred to the auxiliary audio storage medium,
- detecting the video change signals present in the audio frames reproduced from said auxiliary audio storage medium, and
- transferring the associated video frames from the sequential storage medium to an auxiliary video storage medium in response to the detection of the video changed signals present in the audio frames reproduced from said auxiliary audio storage medium.
Apparatus for reproducing the audio frames or fields and the video frames or fields of an audio/video program from sequential access storage media wherein the audio frames consist of audio lines of time compressed audio information in television line format and video change signals indicating the time for displaying the video frames corresponding to the audio, comprising,
- first means for reproducing audio frames consisting of audio lines of time compressed audio information in television line format including video change signals recorded therewith indicating the time for displaying video frames corresponding to the audio,
- second means for detecting the presence of the video change signals present in each reproduced audio frame, and
- third means for reproducing the video frames corresponding to each reproduced audio frame in response to the detected video change signals.
Apparatus for reproducing the audio frames or fields and the video frames or fields of an audio/video program from a sequential access storage medium wherein the audio frames consist of audio lines of time compressed audio information in television line format and video change signals indicating the time for displaying the video frames corresponding to the audio, comprising,
- an auxiliary audio storage device having an audio record/playback head associated therewith,
- an auxiliary video storage device having a video record/playback head associated therewith,
- a moving playback head associated with said audio/video program on said sequential access storage medium,
- first circuit means for transferring the audio frames reproduced by said moving playback head to said record/playback head associated with said auxiliary audio storage device for recording said audio frames on said auxiliary audio storage device,
- second circuit means for reproducing said audio frames from said auxiliary audio storage device,
- third circuit means for detecting video change signals present in the audio frames reproduced from said auxiliary audio storage device,
- fourth circuit means responding to said video change signal detected by said third circuit means by advancing said moving playback head for reproducing corresponding video frames, and
- fifth circuit means for transferring said reproduced video frames to said record/playback head associated with said auxiliary video storage device for recording said video frames on said auxiliary video storage device.
Dependencies are inferred from the claim text.