KR100204468B1 - 영상 부호기 및 복호기 - Google Patents
영상 부호기 및 복호기 Download PDFInfo
- Publication number
- KR100204468B1 KR100204468B1 KR1019950028320A KR19950028320A KR100204468B1 KR 100204468 B1 KR100204468 B1 KR 100204468B1 KR 1019950028320 A KR1019950028320 A KR 1019950028320A KR 19950028320 A KR19950028320 A KR 19950028320A KR 100204468 B1 KR100204468 B1 KR 100204468B1
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- South Korea
- Prior art keywords
- vector
- quantizer
- inverse
- discrete cosine
- scalar
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/94—Vector quantisation
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/1733—Controllable logic circuits
- H03K19/1737—Controllable logic circuits using multiplexers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Image Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Claims (3)
- 프레임메모리(21)로부터 영상데이타를 입력받아 이산여현 변환하는 이산여현 변환기(22); 상기 이산여현 변환기(22)의 출력을 벡터 양자화하는 적어도 하나 이상의 벡터 양자화기(23~25); 상기 이산여현 변환기(22)의 출력을 스칼라 양자화하는 스칼라 양자화기(26); 상기 벡터 양자화기들로부터 왜곡치를 입력받아 비교한 후 최적의 양자화 방식을 선택하기 위한 선택제어신호를 발생하는 판단부(28); 및 상기 벡터 양자화및 스칼라 양자화기의 츨력을 입력받아 상기 판단부(28)의 출력에 따라 하나를 선택하여 압축부호화된 영상을 출력하는 선택기로 구성되는것을 특징으로 하는 영상 부호기.
- 제1항에 있어서, 상기 선택기는 멀티플랙서(27)로 구현되는 것을 특징으로 하는 영상 부호기.
- 이산여현 변환된 영상 데이타를 적어도 하나 이상의 벡터 양자화기 및 스칼라 양자화기에 의해 부호화된 영상 시퀀스를 수신한 후 복호하는 영상 복호기에 있어서, 상기 수신된 영상 시퀀스에서 영상신호와 선택제어신호를 분리하는 분류기(31); 상기 분류기(31)로부터 영상 시퀀스를 입력받아 역벡터 양자화하는 적어도 하나 이상의 역벡터 양자화기(32~34); 상기 분류기(31)로부터 영상 시퀀스를 입력받아 역스칼라 양자화하는 역스칼라 양자화기(35); 및 상기 분류기(31)로부터 선택제어신호(SEL)를 입력받아 상기 역벡터 양자화기 및 역스칼라 양자화기의 출력중 하나를 선택하는 선택기; 및 상기 선택기의 출력을 입력받아 역 이산여현 변환하는 역이산여현 변환기(37)가 구비되는 영상 복호기.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950028320A KR100204468B1 (ko) | 1995-08-31 | 1995-08-31 | 영상 부호기 및 복호기 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950028320A KR100204468B1 (ko) | 1995-08-31 | 1995-08-31 | 영상 부호기 및 복호기 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970014373A KR970014373A (ko) | 1997-03-29 |
| KR100204468B1 true KR100204468B1 (ko) | 1999-06-15 |
Family
ID=19425681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950028320A Expired - Fee Related KR100204468B1 (ko) | 1995-08-31 | 1995-08-31 | 영상 부호기 및 복호기 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100204468B1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101902933B1 (ko) | 2009-12-16 | 2018-10-01 | 한국전자통신연구원 | 영상 부호화/복호화 장치 및 방법 |
-
1995
- 1995-08-31 KR KR1019950028320A patent/KR100204468B1/ko not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101902933B1 (ko) | 2009-12-16 | 2018-10-01 | 한국전자통신연구원 | 영상 부호화/복호화 장치 및 방법 |
| KR20180107067A (ko) * | 2009-12-16 | 2018-10-01 | 한국전자통신연구원 | 영상 부호화/복호화 장치 및 방법 |
| KR20190109373A (ko) * | 2009-12-16 | 2019-09-25 | 한국전자통신연구원 | 영상 부호화/복호화 장치 및 방법 |
| KR102025576B1 (ko) | 2009-12-16 | 2019-09-27 | 한국전자통신연구원 | 영상 부호화/복호화 장치 및 방법 |
| KR102115201B1 (ko) | 2009-12-16 | 2020-05-26 | 한국전자통신연구원 | 영상 부호화/복호화 장치 및 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR970014373A (ko) | 1997-03-29 |
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