Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1997-09-08
2000-03-14
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386122, 360 22, H04N 591
Patent
active
060383690
ABSTRACT:
A signal recording method for recording a signal having improved sound quality while maintaining interchangeability with the pre-existing format for a digital audio disc or the like. An input signal to a signal recording device is a signal obtained on sampling with the sampling frequency exceeding 4.1 kHz and/or a signal having the number of quantization bits exceeding 16. The input signal is split by a band-splitting filter 3 into a main signal which is a 16-bit signal and a plurality of sub-signals of the frequency range other than the above frequency. Each sub-signal has its priority set by a priority calculating unit 5. The sub-signals are synthesized in the order of the decreasing priority to an inaudible area of the main signal as found by a required bit number calculating unit 4.
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Oh Seong-Kun
Onuaku Christopher
Sony Corporation
Tran Thai
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