ENCODING DEVICE, DECODING DEVICE, ENCODING METHOD, AND DECODING METHOD

• Main Authors: HARADA AKIRA, LIM CHIN SEE, NAGISETTY, SATHYANARAYANA, EHARA HIROYUKI
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

An encoding device includes: a quantization circuit generating a quantization parameter including first information related to a codebook of vector quantization and second information related to a code vector included in the codebook; and a control circuit that determines one of a first encoding for encoding first information of a target sub-vector and a second encoding for encoding second information of the target sub-vector on the basis of the number of bits available in vector quantization for encoding a sub-vector including at least the target sub-vector among the plurality of sub-vectors. The second encoding is an encoding of a second number of bits based on a difference between an allocated number of bits of the vector quantization and a number of bits of the quantization parameter. 编码装置包括：量化电路，产生量化参数，所述量化参数包含与向量量化的码本相关的第一信息、和与码本所含的码向量相关的第二信息；以及控制电路，基于向量量化中的可用于对多个子向量中的至少包含目标子向量的子向量进行编码的比特数，决定出第一编码和第二编码中的一者，该第一编码是针对目标子向量的第一信息的编码，该第二编码是基于向量量化的分配比特数与量化参数的比特数之差的第二比特数的编码。