Patent ID: 6724824
Filing Date: 2004-04-20
Classification: H04N

Abstract:
A digital signal processing method comprising the steps of:(a) composing, from digital video data, a plurality of first encoded video data and a plurality of second encoded video data, wherein a number of the first encoded video data is â€œNâ€  (â€œNâ€  being a natural number), and the second encoded video data is â€œNâ€ ; (b) dividing, each of NÃ—K channels (â€œKâ€  being a natural number) of high quality quantized by M bits (â€œMâ€  being a natural number) into audio data of upper â€œLâ€  (â€œLâ€  being a natural number) bits from most significant bit and audio data of lower M-L bits from least significant bit, wherein â€œLâ€  is a quantized bits of standard audio data, and â€œMâ€  is larger than â€œLâ€  and no larger than twice of â€œLâ€  (that is, L(c) composing a plurality of first basic data and a plurality of second basic data, wherein number of the first basic data is â€œNâ€ , and the first basic data have respective K channels audio data of upper â€œLâ€  bits multiplexed together with each of the first encoded video data, and wherein number of the second basic data is â€œNâ€ , and the second basic data have respective K channels audio data of audio data of lower M-L bits multiplexed together with each of the second encoded video data; (d) transmitting said plurality of the first basic data in a first data bus; and (e) transmitting said plurality of the second basic data in a second data bus.