Method and apparatus for data processing and encoding and decoding method, and apparatus therefor
AssigneeLG Electronics Inc.
InventorsHee Suk Pang, Hyen O Oh, Dong Soo Kim, Jae Hyun Lim, Yang-Won Jung, Hyo Jin Kim
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Abstract
An apparatus for processing a signal and method thereof are disclosed. Data coding and entropy coding are performed with interconnection, and grouping is used to enhance coding efficiency. The present invention includes the steps of obtaining index information and entropy-decoding the index information and identifying a content corresponding to the entropy-decoded index information and selecting entropy table.
Claims23
A method for processing a signal, the method comprising:
- obtaining, by an audio coding apparatus, a codeword corresponding to an entropy-encoded entropy table index, wherein variable bits are allocated to the codeword based on frequency of use;
- obtaining an entropy-decoded entropy table index by entropy-decoding the codeword;
- identifying, from among multiple entropy tables used for decoding data, a particular entropy table using the entropy-decoded entropy table index;
- and
- entropy-decoding the data using the particular entropy table,
- wherein the entropy-decoded entropy table index indicates at least one value which corresponds to a largest absolute value (LAV) among multiple indexes included in the particular entropy table.
An audio coding apparatus for processing a signal, the apparatus comprising:
- an index information obtaining part configured to obtain a codeword corresponding to an entropy-encoded entropy table index, wherein variable bits are allocated to the codeword based on frequency of use;
- a decoding part configured to:
- obtain an entropy-decoded entropy table by entropy-decoding the codeword, and
- entropy-decode the data using a particular entropy table;
- and
- an identifying part configured to identify, from among multiple entropy tables used for decoding data, the particular entropy table using the entropy-decoded entropy table index,
- wherein the entropy-decoded entropy table index indicates at least one value which corresponds to a largest absolute value (LAV) among multiple indexes included in the particular entropy table.
A system for processing a signal, the system comprising:
- an audio coding apparatus configured to:
- obtain a codeword corresponding to an entropy-encoded entropy table index, wherein variable bits are allocated to the codeword based on frequency of use;
- obtain an entropy-decoded entropy table index by entropy-decoding the codeword;
- identify, from among multiple entropy tables used for decoding data, a particular entropy table using the entropy-decoded entropy table index;
- and,
- entropy-decode the data using the particular entropy table,
- wherein the entropy-decoded entropy table index indicates at least one value which corresponds to a largest absolute value (LAV) among multiple indexes included in the particular entropy table.
Dependencies are inferred from the claim text.