Apparatus for controlling a sum of a varying information amount

Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium

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386 99, 386104, 360 32, H04N 591, H04N 5928, H04N 704, G11B 500

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active

058928847

ABSTRACT:
A digital video/audio recording and reproducing apparatus comprising a video signal high-efficiency encoder having a variable reduction rate, an audio signal high-efficiency encoder having a variable reduction rate, and a controller for controlling the reduction rates in both of the high-efficiency encoders. The reduction rates in both of the high-efficiency encoders are controlled in such a manner that the sum of the information amount of the video signal and that of the audio signal, after high-efficiency encoding, is maintained constant. When recording multi-channel audio signals, the reduction rates in both of the high-efficiency encoders are controlled according to the number of audio signal channels to be recorded. The high frequency components of the high-efficiency encoded video and audio signals are recorded at the end portions of recording tracks on a magnetic tape, while the low frequency components thereof are recorded in the central portion of the recording tracks.

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Hoso Gijutsu (Broadcast Technology), July 1988 pp. 667-672.

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