KR950013264A

KR950013264A - Quantization Parameter Transmitter of Adaptive Quantizer

Info

Publication number: KR950013264A
Application number: KR1019930022624A
Authority: KR
Inventors: 임종태
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-10-28
Filing date: 1993-10-28
Publication date: 1995-05-17

Abstract

본 발명은 적응적 양자화기를 갖춘 동영상 부호화기에 있어서, 적응적 양자화시에 매크로 블럭의 양자화 파라메터(QP : Quantizer Parameter)를 가변길이 부호화하여 전송하는 양자화 파라메터 전송장치에 관한 것으로, 압축효율을 향상시킬 수 있다.The present invention relates to a quantization parameter transmission apparatus for transmitting variable length coding of a quantization parameter (QP: Quantizer Parameter) of a macroblock during adaptive quantization, and can improve compression efficiency. have.

따라서 본 발명은 감산기(11), 양자화 파라메터에 대한 가변길이 부호화 기능을 더 포함한 가변길이 부호화부(12), 부호화 시스템내에 포함되어 가변길이 부호화부(12)에서 출력되는 데이터를 복호화하기 위한 가변길이 복호화부(13), 가산기(14) 및 전 매크로 블럭의 QP를 저장하는 메모리(15)로 구성된다.Accordingly, the present invention provides a variable length encoder 12 further including a subtractor 11, a variable length encoding function for a quantization parameter, and a variable length for decoding data output from the variable length encoder 12 included in an encoding system. The decoder 13, the adder 14, and a memory 15 for storing the QP of all macro blocks.

Description

Quantization Parameter Transmitter of Adaptive Quantizer

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 의한 양자화 파라메터 전송장치의 구성도.2 is a block diagram of a quantization parameter transmission apparatus according to the present invention.

Claims

Calculate the difference between the quantization parameter of the previous macroblock and the quantization parameter of the previous macroblock stored in the quantization parameter memory Variable length encoding means 12 for varying the length of the subtracting means 11, the quantized data of the macroblock and the quantization parameter? QP output from the subtracting means 11, and the variable length encoding Variable length decoding means 13 for decoding the quantization parameter signal output from the means 12, and the quantization parameter decoded from the variable length decoding means 13 and output from the quantization parameter memory 15 Addition to add the quantization parameters of all macroblocks and output them to the quantization parameter memory 15 Parameters of the transmission devices based adaptive quantization, characterized in that comprising: a stage (14).

2. The variable length encoding means (12) according to claim 1, characterized in that the variable length encoding means (12) encodes one bit of code bits and two bits of size bits if the difference ΔQP of the quantization parameter is (-3) to (+3). A quantization parameter transmitter of an adaptive quantizer.

※ Note: The disclosure is based on the initial application.