Information encoding method and apparatus, information decoding method and apparatus and recording medium
AssigneeSony Corporation
InventorYoshiaki Oikawa
Life of this patent
Estimating the term…
Abstract
A method of encoding information of an input signal using a fixed number of bits for each unit time frame. Part of the encoded information of at least one second frame temporally consecutively or non-consecutively preceding or following a first frame is contained in the encoded information of the first frame. This eliminates fluctuations in the sound quality due to bit surplus/shortage resulting from quantization for achieving efficient encoding and decoding.
Claims35
A method of encoding information of an input signal using a fixed number of bits for each unit time frame, wherein the improvement resides in that a part of the encoded information of at least one second frame temporarily consecutively or non-consecutively preceding or following the first frame is contained in the encoded information of said first frame, wherein said part comprises a variable number of bits, and the encoded information of said first frame is determined independent of the encoded information of the at least one second frame.
A method of decoding encoded information in which a code string produced using a fixed number of bits for each unit time frame is decoded, wherein the improvement resides in that
- a code string in which a part of the encoded information of at least one second frame temporally consecutively or non-consecutively preceding or following a first frame is contained in the encoded information of said first frame is decoded, wherein said part comprises a variable number of bits, and the encoded information of said first frame is decoded independent of the encoded information of the at least one second frame.
An apparatus for encoding an input signal to form encoded information using a fixed number of bits for each unit time frame, comprising:
- means for separating a part of the encoded information of at least one second frame temporally consecutively or non-consecutively preceding or following a first frame;
- and
- synthesizing means for incorporating said part of the encoded information separated by said separating means into the encoded information of said first frame,
- wherein said part comprises a variable number of bits, and the encoded information of said first frame is determined independent of the encoded information of the at least one second frame.
An apparatus for decoding encoded information in which a code string produced using a fixed number of bits for each unit time frame is decoded, wherein the improvement resides in that a code string in which a part of the encoded information of at least one second frame temporally consecutively or non-consecutively preceding or following a first frame is contained in the encoded information of said first frame is decoded, wherein said part comprises a variable number of bits, and the encoded information of said first frame is decoded independent of the encoded information of the at least one second frame.
A recording medium for encoding information encoded from an input signal using a fixed number of bits for each unit time frame, wherein the improvement resides in that
- a code string in which a part of the encoded information of at least one second frame temporally consecutively or non-consecutively preceding or following a first frame is contained in the encoded information of said first frame is recorded thereon, wherein said part comprises a variable number of bits, and the encoded information of said first frame is determined independent of the encoded information of the at least one second frame.
Dependencies are inferred from the claim text.