KR950030491A

KR950030491A - Encoder

Info

Publication number: KR950030491A
Application number: KR1019940009515A
Authority: KR
Inventors: 윤성욱
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1994-04-30
Filing date: 1994-04-30
Publication date: 1995-11-24

Abstract

본 발명은 허프만 부호화를 이용하여 부호화하기에 적합한 부호화기에 관한 것으로, 종래에는 고정길이 부호화부가 양자화부의 양자화에 따른 몫과 나머지 중에서 나머지를 인가받아 고정길이 부호화하기 때문에 전체 비트 율이 증가하며, 구성시 롬 크기가 증가하여 전체 크기가 증가해서 실제로 구현하기가 어려웠으나, 본 발명에서는 우선적으로 양자화된 영상신호에 따른 몫과 나머지 중에서 몫을 가변길이 부호화하고, 나머지는 다시 양자화하여 몫을 가변길이 부호화함으로써 전체 비트 율이 작아지며, 두번의 양자화시 동일한 부호책을 사용하기 때문에 롬의 크기를 줄일 수 있어 전체 크기가 작아지므로 상기 결점을 개선시킬 수 있는 것이다.The present invention relates to an encoder suitable for encoding using Huffman coding. Conventionally, since the fixed-length encoder receives fixed-length encoding by applying the remainder of the quantization part and the remainder of the quantization, the overall bit rate is increased. Since the ROM size is increased and the total size is increased, it is difficult to actually implement the present invention. The overall bit rate is reduced, and since the same codebook is used in two quantizations, the size of the ROM can be reduced, and thus the overall size is reduced, thereby improving the above-described drawbacks.

Description

Encoder

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

제2도는 본 발명에 따른 부호화기의일 실시예를 설명하기 위한 블럭도.2 is a block diagram for explaining an embodiment of an encoder according to the present invention.

Claims

A first quantization unit 11 for quantizing the video signal; A first variable length encoder (12) for variable length encoding the quotient of the quantized signal of the first quantizer (11); A second quantization unit 13 for quantizing the remainder among the quantized signals of the first quantization unit 11; And a second variable length encoder (14) for variable length encoding the quotient of the quantized signals of the second quantizer (13).

The encoder according to claim 1, wherein the first and second variable length encoders (12, 14) perform variable length encoding using the same code book.

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