Patent ID: 7006422

Claim:
A digital signal recording disc comprising: a first area (ATS D) storing an audio title set (ATS) which comprises one or more audio pack(s) containing at least first and second channel digital audio signals of a plurality of channels of audio data, wherein said plurality of channels are divided into first and second channel groups (Group 1 , 2 ), and the first channel digital audio signal included in the first channel group comprises a front channel digital audio signal (Lf,Rf) and the second channel digital audio signal(s) included in the second channel group comprises a rear channel digital audio signal; the audio title set (ATS) including an audio title set information (ATSI) containing information of first and second parameters respectively relating to the first and second channel digital audio signals, the first parameter comprising at least one item selected from the group comprising; quantization bit numbers (Q 1 ,Q 2 ) of the first and second group channel digital audio signals; sampling frequencies (fs 1 ,fs 2 ) of the first and second channel group digital audio signals; the second parameter (CHANNEL ASSIGNMENT) comprising assignment of the first and second channel digital audio signals to said first and second channel groups; the digital signal recording disc having a second area (VTS D) storing a video title set (VTS); wherein said audio pack having a header storing information of first and second parameters respectively relating to the first and second channel digital audio signals, the first parameter comprising at least one item selected from the group comprising; quantization bit numbers (Q 1 ,Q 2 ) of the first and second group channel digital audio signals; sampling frequencies (fs 1 ,fs 2 ) of the first and second channel group digital audio signals; the second parameter (CHANNEL ASSIGNMENT) comprising assignment of the first and second channel digital audio signals to said first and second channel groups.