Signal encoding apparatus, audio data transmitting method, audio data recording method, audio data decoding method and audio disc
View Patent ↗A format of data recorded in a DVD-Audio disc is composed of an audio manager (AMG) and a plurality of audio title sets (ATSS) following the AMG. A plurality of audio packs are arranged in each ATS. An audio signal indicating a musical composition is encoded to audio data in a signal processing circuit, and the audio data is arranged in the audio packs. The audio data of the audio packs are formatted in a DVD formatting unit with the AMG to be arranged in the ATSs following the AMG. Also, copyright information is arranged in an area of a control data block placed in a read-in area of the DVD-Audio disc. Table-of-contents (TOC) information indicating a top address of the audio data is automatically produced and is arranged in an empty area of the control data block reserved for the copyright information, in an area of the audio packs, in an area of the AMG or in an area of the ATSs. The AMG, the ATSs including the audio packs and the TOC information arranged at the data format in the DVD formatting unit are transmitted to a human editor through a transmission medium and is recorded in the DVD-Audio disc.
1. An audio data transmitting method, comprising the steps of:
preparing audio data, audio manager information for managing an audio title set including at least an audio title, audio title set information for accessing the audio title(s), and table-of-contents (TOC) information;
formatting the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information prepared in the preparing step, to arrange the audio data in an audio pack of each audio title, to arrange the audio manager information in an area of an audio manager, to arrange the audio title set information in an area of an audio title set and to arrange the table-of-contents (TOC) information indicative of a position of the audio data in a table-of-contents (TOC) file, wherein said table-of-contents (TOC) file is independent of said audio title set information and is divided into a plurality of TOC groups (# 1 to #n) (n denotes a natural number), wherein each of the TOC groups contains said one or more audio title(s), and wherein a musical composition containing the audio data is played back for each audio pack by using the TOC group including the audio title of the audio pack;
transmitting the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information formatted in the formatting step through a transmission medium;
receiving the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information transmitted I the transmitting step; and
recording the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information receiving in the receiving step.
2. An audio data decoding method, comprising the steps of:
deformatting audio data, audio manager information, audio title set information and table-of-contents (TOC) information indicative of a position of the audio data encoding by an encoding apparatus, the encoding apparatus including
signal encoding means for encoding original audio data, original audio data, original audio manager information, original audio title set information and original table-of-contents (TOC) information to obtain the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information;
formatting means for formatting the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information obtained by the signal encoding means, to arrange the audio data in an audio pack of the audio title, to arrange the audio manager information in an area of an audio manager, to arrange the audio title set information in an area of an audio title set and to arrange the table-of-contents (TOC) information indicative of a position of the audio data in a table-of-contents (TOC) information indicative of a position of the audio data in a table-of-contents (TOC) file, wherein said table-of-contents (TOC) file is independent of said audio title set information and is divided into a plurality of TOC groups (# 1 to #n) (n denotes a natural number), wherein each of the TOC groups contains said one or more audio title(s), and wherein a musical composition containing the audio data is played back for each audio pack by using the TOC group including the audio title of the audio pack; and
outputting mean for outputting the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information formatted by the formatting means; and
outputting the audio data deformatted in the deformatting step from a top position of a musical composition according to the TOC groups (# 1 to #n) deformatted in the deformatting step.
3. A signal encoding method, comprising the steps of:
encoding audio data, audio manager information, audio title set information and table-of-contents (TOC) information;
formatting the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information encoded in the encoding step, to arrange the audio data in an audio pack of the title, to arrange the audio manager information in an area of an audio manager, to arrange the audio title set information in an area of an audio title set and to arrange the table-of-contents (TOC) information indicative of a position of the audio data in a table-of-contents (TOC) file, wherein said table-of-contents (TOC) file is independent of said audio title set information and is divided into a plurality of TOC groups (# 1 to #n) (n denotes a natural number), wherein each of the TOC groups contains said one or more audio title(s), and wherein a musical composition containing the audio data is played back for each audio pack by using the TOC group including the audio title of the audio pack; and
outputting the audio data, the audio manager information, the audio title set information and the table-of-contents (TOC) information formatted in the formatting step.