Recording technique for an audio/video program wherein the audio incorporates video change signals
AssigneeWestinghouse Electric Corp.
InventorHarold B. Shutterly
Life of this patent
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Abstract
In the recording of audio-video programs in which the audio is time-compressed and converted into television format, the video frames associated with a given audio frame are recorded in a group immediately following the audio frame, and picture-change cue signals are recorded at selected lines within the audio frame so that on playback, displayed video can be changed at preselected points in the audio frame playback. A number of video frames can be recorded between successive audio frames wihtout introducing any discontinuity in audio playback.
Claims3
A method for recording the audio frames or fields and the video frames or fields of an audio/video program on a sequential access storage medium, comprising the steps of:
- recording audio frames consisting of compressed audio information in television line format on the sequential access storage medium,
- inserting video change signals at predetermined locations within the recorded audio frames, and
- recording video frames corresponding in number to said predetermined number of video change signals in a sequential manner on said sequential access storage medium following said recorded audio frames.
Apparatus for recording the audio frames or fields and the video frames or fields of an audio/video program on a sequential access storage medium, comprising:
- first means for recording audio frames consisting of compressed audio information in television line format on the sequential access storage medium,
- second means for inserting video change signals at predetermined locations within the recorded audio frames, and
- third means for recording video frames corresponding in number to said predetermined number of video change signals in a sequential manner on said sequential access storage medium following said recorded audio frames.
Dependencies are inferred from the claim text.