KR960003402A - 화일 압축기법의 선택적 사용으로 보다 높은 압축율을 갖는 비트스트림 압축장치 - Google Patents
화일 압축기법의 선택적 사용으로 보다 높은 압축율을 갖는 비트스트림 압축장치 Download PDFInfo
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- KR960003402A KR960003402A KR1019940013291A KR19940013291A KR960003402A KR 960003402 A KR960003402 A KR 960003402A KR 1019940013291 A KR1019940013291 A KR 1019940013291A KR 19940013291 A KR19940013291 A KR 19940013291A KR 960003402 A KR960003402 A KR 960003402A
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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
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
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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
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/124—Quantisation
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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
- H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
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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
- H04N19/93—Run-length coding
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Claims (3)
- 양자화 스텝사이즈 파라미터(QP)를 입력받으며, 이산 코사인 변환된 변환계수를 양자화하여 출력하는 양자화부(110)와, 상기 양자화된 데이타를 줄길이부호화 및 가변길이부호화하여 출력하는 부호화부(120,130)를 갖는 상기 부호화된 비트스트림 데이타를 화일 압축하여 출력하는 재압축부(140)와; 상기 재압축부(140)로 부터 압축율을 검출하고, 상기 압축율에 대응적으로 조절된 양자화 스텝사이즈 파라미터(QP)를 상기 양자화부(110)로 출력하는 조절부(160)를 포함하는 것을 특징으로 하는 비트스트림 압축장치.
- 제1항에 있어서, 상기 재압축부(140)가 상기 부호화된 비트스트림 데이타를 서로 다른 화일 압축기법에 의해 화일 압축하는 다수개의 화일 압축부를 포함하는 것을 특징으로 하는 비트스트림 압축장치.
- 제2항에 있어서, 상기 재압축부(140)의 다수개의 화일 압축부로 부터 데이타를 입력받으며, 선택적으로 데이타를 출력하는 선택부(150)를 더 포함하며, 상기 조절부(160)가 상기 재압축부(140)의 다수개의 화일 압축부로 부터 각각 압축율을 검출하고, 상기 각각의 압축율은 비교판단하여 가장 높은 압축율을 갖는 화일 압축부를 선택하기 위한 선택신호(SO)를 상기 선택부(150) 및 수신단으로 전송하고, 상기 가장 높은 압축율에 대응적으로 조절된 양자화 스텝사이즈 피라미터(QP)를 상기 양자화부(110)로 출력하는 것을 특징으로 하는 비트스트림 압축장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR94013291A KR970010093B1 (en) | 1994-06-14 | 1994-06-14 | Bit stream coding apparatus having high coding rate by selective use of file coding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR94013291A KR970010093B1 (en) | 1994-06-14 | 1994-06-14 | Bit stream coding apparatus having high coding rate by selective use of file coding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960003402A true KR960003402A (ko) | 1996-01-26 |
| KR970010093B1 KR970010093B1 (en) | 1997-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR94013291A Expired - Fee Related KR970010093B1 (en) | 1994-06-14 | 1994-06-14 | Bit stream coding apparatus having high coding rate by selective use of file coding method |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970010093B1 (ko) |
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1994
- 1994-06-14 KR KR94013291A patent/KR970010093B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR970010093B1 (en) | 1997-06-21 |
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