Patent ID: 7050370
Filing Date: 2006-05-23
Classification: G11B

Abstract:
1. An optical disk configured to store an audio object and management information configured to manage the audio object, the audio object including a plurality of packs, audio signals of a plurality of channels stored in the plurality of packs being distributed into a first channel group and a second channel group, the audio signals of the first channel group being digitized into a first audio data string at a first sampling frequency in a first number of quantization bits, and the audio signals of the second channel group being digitized into a second audio data string at a second sampling frequency in a second number of quantization bits, the second sampling frequency being different from the first sampling frequency, the first audio data string and the second audio data string being arranged individually, and the management information including an audio title set information management table for reproducing the audio signals of the plurality of channels and a program chain information table, the audio title set information management table including allocation information, which indicates a state of each of the plurality of channels, wherein the state indicates whether each of the plurality of channels is allocated to a stereo channel or a surround channel, and at least one mix down coefficient table, the at least one mix down coefficient table describing a mixing coefficient for mixing each of the plurality of channels when the plurality of channels are reproduced.