Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1994-12-14
1998-09-29
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 98, 386101, 386111, 348423, 348515, H04N 5928, H04N 712
Patent
active
058156348
ABSTRACT:
A multimedia system including an audio/video decoder/decompresser for decoding/decompressing a compressed encoded audio/video data stream to generate video images for display and audio signals for audible reproduction. The multimedia system includes an integrated system and video decoder with an audio/video synchronization circuit for substantially synchronizing the display of video images with audio playback. In addition, a step control is provided to allow for viewing of video images on a frame-by frame basis or to freeze or play video in slow motion. When step control is activated, audio output is muted. Audio data corresponding to displayed video is transmitted to the muted audio decoder. An internal system clock may be suppressed to the system clock counter. An external CPU may provide system clock start times corresponding to video frames to be displayed. The external CPU may increment the system clock counter by a an amount corresponding to the difference between a successive frame or number of frames. When nominal playback is resumes, the audio and video data streams are substantially in synchronization.
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Chan Tzoyao
Chang Richard
Daum Daniel T.
Ort Jeffrey G.
Rosenau Mark A.
Alford William
Bell Robert P.
Cirrus Logic Inc.
Shaw Steven A.
Tran Thai
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