发明名称 |
Apparatus for controlling a sum of varying information amount of a video signal and a varying information amount of an audio signal so that the sum is within a predetermined amount of data range |
摘要 |
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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申请公布号 |
US5889921(A) |
申请公布日期 |
1999.03.30 |
申请号 |
US19980083434 |
申请日期 |
1998.05.22 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
SUGIYAMA, KAZUHIRO;ONISHI, KEN;HONGO, KIMITOSHI;ONO, YUKARI |
分类号 |
H04N5/7826;G11B20/00;G11B20/12;H03M7/30;H04N5/92;H04N5/926;H04N5/945;H04N7/30;H04N7/50;H04N7/52;(IPC1-7):H04N5/92;H04N5/928 |
主分类号 |
H04N5/7826 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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