KR950004129B1 - 가변장 부호 복호기 - Google Patents
가변장 부호 복호기 Download PDFInfo
- Publication number
- KR950004129B1 KR950004129B1 KR1019920008454A KR920008454A KR950004129B1 KR 950004129 B1 KR950004129 B1 KR 950004129B1 KR 1019920008454 A KR1019920008454 A KR 1019920008454A KR 920008454 A KR920008454 A KR 920008454A KR 950004129 B1 KR950004129 B1 KR 950004129B1
- Authority
- KR
- South Korea
- Prior art keywords
- data
- decoder
- length
- unpacker
- variable length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
- H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
- H03M7/425—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory for the decoding process only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/42—Flyback transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/525—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency
-
- 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
-
- 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
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
-
- 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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Color Television Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Description
Claims (1)
- 복호기의 시작점을 찾을 수 있도록 입력 데이타를 정렬시켜 주는 이니셜라이저(2)와, 엔코더측에서 생기는 지연시간을 보정하는 버퍼(3)와,32비트의 데이타 2개를 묶어서 출력하는 언팩커(4)와, 64비트의 입력에서 한번에 0∼31비트를 쉬프트시키는 배럴 쉬프터(5)와, 가변장 부호의 길이에 쉬프트양을 누적시켜 가면서 필요에 따라 버퍼로 부터의 새로운 데이타를 상기 언왝커(4)에 입력시키는 언팩커 제어부(7)와, 각각의 가변장 부호의 복호 테이블을 가지고 있는 디코더(8∼12)와, 각 가변장 길이를 가지고 있는 길이 디코더(13)와, DPCM으로 전송된 코드를 원래의 데이타로 바꾸어주는 MV 계산부(14), YDC 계산부(16) 및CDC 계산부(17)와, RLC 디코더(10)로 부터의 복호 데이타에서 나머지 부족한 블록데이타를 만들어 주는 엑스트라 런 레벨 발생기(15)와, DC 계수와 AC 계수를 서로 혼합시켜 주는 멀티플렉서(21,22)와, 각각의 블록에 해당하는 데이타를 저장하는 버퍼(23-28)와, 상기 버퍼(23∼28)의 데이타를 이동하여 이산 코싸인변환 계수를 발생시키는 계수발생기(29∼34)와, 프레임, 슬라이스, 매크로 블록단위로 데이타를 저장하는버퍼(18∼20)와, 이 복호동작을 시작하는 시점을 찻는 시작코드 디코더(35)와, 상기의 모든 복호동작을 제어하는 제어부(36)를 포함하여 구성한 것을 특징으로 하는 가변장 부호 복호기.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920008454A KR950004129B1 (ko) | 1992-05-19 | 1992-05-19 | 가변장 부호 복호기 |
| US08/061,667 US5414468A (en) | 1992-05-19 | 1993-05-14 | Apparatus for decoding variable length codes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920008454A KR950004129B1 (ko) | 1992-05-19 | 1992-05-19 | 가변장 부호 복호기 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930024509A KR930024509A (ko) | 1993-12-22 |
| KR950004129B1 true KR950004129B1 (ko) | 1995-04-25 |
Family
ID=19333275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920008454A Expired - Fee Related KR950004129B1 (ko) | 1992-05-19 | 1992-05-19 | 가변장 부호 복호기 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5414468A (ko) |
| KR (1) | KR950004129B1 (ko) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6067417A (en) | 1992-06-30 | 2000-05-23 | Discovision Associates | Picture start token |
| JP2862064B2 (ja) * | 1993-10-29 | 1999-02-24 | 三菱電機株式会社 | データ復号装置及びデータ受信装置及びデータ受信方法 |
| KR970006633B1 (ko) * | 1993-12-29 | 1997-04-29 | 현대전자산업 주식회사 | 가변길이 복호기용 데이타 출력장치 |
| KR0148153B1 (ko) * | 1994-05-31 | 1998-09-15 | 김광호 | 비트스터핑 제거장치 |
| JP3450553B2 (ja) * | 1995-10-31 | 2003-09-29 | 東芝マイクロエレクトロニクス株式会社 | 可変長符号復号装置 |
| FR2743248B1 (fr) * | 1995-12-29 | 1998-03-20 | Sgs Thomson Microelectronics | Dispositif de demultiplexage d'informations codees selon une norme mpeg |
| FR2743969B1 (fr) * | 1996-01-19 | 1998-04-10 | Sgs Thomson Microelectronics | Dispositif d'extraction de paramaetres de decodage d'un flux de donnees video codees selon une norme mpeg |
| KR100215439B1 (ko) * | 1996-02-08 | 1999-08-16 | 윤종용 | 고속의 데이타 구문분석 제어회로 |
| US6008745A (en) * | 1998-02-17 | 1999-12-28 | Sun Microsystems, Inc. | Variable length decoding using lookup tables |
| CN1245839C (zh) * | 2001-07-04 | 2006-03-15 | 矽统科技股份有限公司 | 分散式视频数据流解码方法 |
| US20050036555A1 (en) * | 2003-08-13 | 2005-02-17 | Lakshmanan Ramakrishnan | Automatic direct memory access engine |
| US8250618B2 (en) * | 2006-09-18 | 2012-08-21 | Elemental Technologies, Inc. | Real-time network adaptive digital video encoding/decoding |
| US8184715B1 (en) | 2007-08-09 | 2012-05-22 | Elemental Technologies, Inc. | Method for efficiently executing video encoding operations on stream processor architectures |
| US8121197B2 (en) | 2007-11-13 | 2012-02-21 | Elemental Technologies, Inc. | Video encoding and decoding using parallel processors |
| JP5067361B2 (ja) * | 2008-12-25 | 2012-11-07 | ソニー株式会社 | エンコーダ及びデコーダ、符号方法及び復号方法、並びに記録媒体 |
| CN103056211B (zh) * | 2013-01-29 | 2015-07-22 | 广州市康尼斯自动化有限公司 | 连续送料高速冲压机构的控制系统和控制方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4727421A (en) * | 1984-10-04 | 1988-02-23 | Nec Corporation | Method of coding picture signal and picture coding/decoding apparatus utilizing the same |
| NL8800988A (nl) * | 1988-04-15 | 1989-11-01 | Philips Nv | Systeem voor overdracht van videosignalen met adaptieve codewoordtoewijzing, alsmede zender en ontvanger geschikt voor het systeem. |
| DE3939136A1 (de) * | 1989-11-27 | 1991-05-29 | Daimler Benz Ag | Verfahren zur decodierung von codierten bilddaten |
| DE69126565T2 (de) * | 1990-04-17 | 1998-01-02 | Matsushita Electric Ind Co Ltd | Verfahren zur Übertragung von Kodes mit variabler Länge |
| US5253053A (en) * | 1990-12-31 | 1993-10-12 | Apple Computer, Inc. | Variable length decoding using lookup tables |
| US5148272A (en) * | 1991-02-27 | 1992-09-15 | Rca Thomson Licensing Corporation | Apparatus for recombining prioritized video data |
| US5146325A (en) * | 1991-04-29 | 1992-09-08 | Rca Thomson Licensing Corporation | Video signal decompression apparatus for independently compressed even and odd field data |
| US5262854A (en) * | 1992-02-21 | 1993-11-16 | Rca Thomson Licensing Corporation | Lower resolution HDTV receivers |
| US5247363A (en) * | 1992-03-02 | 1993-09-21 | Rca Thomson Licensing Corporation | Error concealment apparatus for hdtv receivers |
| US5241382A (en) * | 1992-04-25 | 1993-08-31 | General Instrument Corporation | Digital HDTV data packet format and receiver therefor |
-
1992
- 1992-05-19 KR KR1019920008454A patent/KR950004129B1/ko not_active Expired - Fee Related
-
1993
- 1993-05-14 US US08/061,667 patent/US5414468A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5414468A (en) | 1995-05-09 |
| KR930024509A (ko) | 1993-12-22 |
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