KR0148181B1 - 디지탈 기록재생시스템의 가변적 동기패턴검출장치 및 방법 - Google Patents
디지탈 기록재생시스템의 가변적 동기패턴검출장치 및 방법Info
- Publication number
- KR0148181B1 KR0148181B1 KR1019950007477A KR19950007477A KR0148181B1 KR 0148181 B1 KR0148181 B1 KR 0148181B1 KR 1019950007477 A KR1019950007477 A KR 1019950007477A KR 19950007477 A KR19950007477 A KR 19950007477A KR 0148181 B1 KR0148181 B1 KR 0148181B1
- Authority
- KR
- South Korea
- Prior art keywords
- synchronization
- detection
- synchronous
- sync
- signal
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
- H04N9/88—Signal drop-out compensation
- H04N9/888—Signal drop-out compensation for signals recorded by pulse code modulation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
Claims (8)
- 매 트랙단위로 인가되는 영상신호의 동기검출을 하는 디지탈기록재생시스템에 있어서, 상기 영상신호의 동기를 검출하여 그에 해당하는 동기검출신호를 출력하는 동기검출부; 상기 동기검출부로부터의 동기검출상태에 따라 알고리즘연산수단을 제어하는 제어부; 및 상기 제어부의 제어하에 상기 동기검출부의 동기검출횟수가 기준횟수 이상이 되면 동기에러값과 동기미스값을 트랙단위로 산출하고, 산출된 두 값을 이용하여 동기검출상태를 판단하여 다음 트랙에 대한 동기검출기준횟수와 동기에러발생횟수를 가변 조정하는 알고리즘 연산수단을 포함하는 디지탈 기록재생시스템의 가변적 동기패턴검출장치.
- 제1항에 있어서, 상기 알고리즘연산수단은 이전 트랙의 동기검출기준횟수와 동기에러발생횟수를 저장하는 트랙정보저장부; 상기 동기검출기준횟수와 동기에러발생횟수와 동기미스발생횟수를 카운트하는 카운터부; 및 상기 제어부의 제어하에 상기 트랙정보저장부와 상기 카운터부로부터의 데이타를 인가받아 기설정된 알고리즘에 따라 동기검출상태를 판단하는 알고리즘연사부를 포함하는 것을 특징으로 하는 디지탈 기록재생시스템의 가변적 동기패턴검출장치.
- 매 트랙단위로 인가되는 영상신호의 동기검출방법에 있어서, 상기 트랙의 선동기블럭에서 동기검출 기준횟수를 판단하는 단계; 상기 동기검출 기준횟수 이상이면 하나의 동기구간에 해당하는 동기카운트값을 로드시킨 후 다음 동기구간의 시작부분을 알기 위하여 매 클럭 입력시 카운트값을 하나씩 감소시키는 단계 j 상기 동기검출 기준횟수를 판단하기 위해 상기 감소된 동기카운트값이 0이 되는 순간을 다음 동기블럭의 시작이라 판단하고, 동기검출부에서 발생하는 동기신호가 제1신호일 경우 동기에러카운트값을 리셋시키는 단계; 상기 동기에러카운트값이 리셋되지 않으면, 동기신호임에도 불구하고 동기신호로 판단하지 못하는 경우에 해당하는 동기미스를 체크하는 단계; 상기 동기미스단계가 아닐 경우, 동기신호가 아님에도 불구하고 동기 신호로 판단하는 경우에 해당하는 동기에러를 체크하는 단계; 및 id신호의 에러를 검출한 다음 다음트랙에 대한 동기검출기준횟수를 가변 조정하는 단계를 포함하는 것을 특징으로 하는 디지탈 기록재생시스템의 가변 동기신호발생방법.
- 제3항에 있어서, 상기 동기검출 기준횟수를 판단하는 단계는 동기검출부에서 발생되는 동기신호가 제1상태인가를 판단하여 제1상태이면 동기신호 후단에 연결되는 id데이타와 그에 해당하는 id순서값이 일치하는지는 판단하고 동기신호가 제2상태이면 상기 제1신호가 인가될때까지 반복수행하는 과정; 상기 id데이타에 해당하는 id순서값이 일치한다고 판단되면 id순서값을 하나 증가시키고 상기 동기검출기준횟수를 하나 증가시키는 과정; 상기 id순서값으로 판단되지 않을 경우 id순서값을 2 증가시켜 다음 id블럭으로 넘어가는 과정; 상기 동기검출기준횟수와 기설정된 동기검출기준횟수를 비교하여 일치할 때까지 동작을 반복수행하는 과정을 포함하는 것을 특징으로 하는 디지탈 기록재생시스템의 가변적 동기패턴검출방법.
- 제3항에 있어서, 상기 동기미스를 체크하는 단계는 동기카운트값이 0이고, 동기검출부에서 발생되는 동기신호가 제2상태일 경우 동기미스카운트값을 하나 증가시키는 것을 특징으로 하는 디지탈 기록재생시스템의 가변적 동기패턴검출방법.
- 제3항에 있어서, 상기 동기에러를 체크하는 단계는 동기카운트값이 0이 아니고, 동기검출부에서 발생되는 동기신호가 제1상태일 경우 동기에러카운트값을 하나 증가시키는 것을 특징으로 하는 디지탈 기록재생시스템의 가변적 동기패턴검출방법.
- 제3항에 있어서, 다음 트랙에 대한 동기검출기준횟수를 가변 조정 하는 단계에서 동기검출기준횟수 및 동기에러검출횟수에 가중치를 두어 상기 동기신호 및 id신호의 수렴속도를 조절할 수 있는 것을 특징으로 하는 디지탈 기록재생시스템의 가변적 동기패턴검출방법.
- 제3항에 있어서, 다음 트랙에 대한 동기검출기준횟수를 가변조정하는 단계에서 발산을 방지하기 위해 동기검출기준횟수 및 동기에러검출횟수의 최소값 및 최대값을 미리 설정한 다음 그 범위 안에서 가변 조정하는 것을 특징으로 하는 디지탈 기록재생시스템의 가변적 동기패턴검출방법.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950007477A KR0148181B1 (ko) | 1995-03-31 | 1995-03-31 | 디지탈 기록재생시스템의 가변적 동기패턴검출장치 및 방법 |
| US08/624,928 US5848218A (en) | 1995-03-31 | 1996-03-29 | Adaptive sync protection method in digital reproduction systems and apparatus therefor |
| EP96302249A EP0735535B1 (en) | 1995-03-31 | 1996-03-29 | Adaptive sync protection method in digital reproduction systems and apparatus therefor |
| JP8076596A JP2937853B2 (ja) | 1995-03-31 | 1996-03-29 | ディジタル再生システムにおける適応的同期保護方法及びその装置 |
| DE69611945T DE69611945T2 (de) | 1995-03-31 | 1996-03-29 | Adaptives Verfahren zum Schutz von Synchronisationsblöcken in digitalen Wiedergabesystemen und Gerät dafür |
| CN96107260A CN1077318C (zh) | 1995-03-31 | 1996-03-31 | 用于数字重放系统的同步保护方法及其装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950007477A KR0148181B1 (ko) | 1995-03-31 | 1995-03-31 | 디지탈 기록재생시스템의 가변적 동기패턴검출장치 및 방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960035580A KR960035580A (ko) | 1996-10-24 |
| KR0148181B1 true KR0148181B1 (ko) | 1998-10-15 |
Family
ID=19411263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950007477A Expired - Fee Related KR0148181B1 (ko) | 1995-03-31 | 1995-03-31 | 디지탈 기록재생시스템의 가변적 동기패턴검출장치 및 방법 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5848218A (ko) |
| EP (1) | EP0735535B1 (ko) |
| JP (1) | JP2937853B2 (ko) |
| KR (1) | KR0148181B1 (ko) |
| CN (1) | CN1077318C (ko) |
| DE (1) | DE69611945T2 (ko) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6245064B1 (en) | 1997-07-08 | 2001-06-12 | Atrionix, Inc. | Circumferential ablation device assembly |
| JP5765706B2 (ja) | 2011-04-28 | 2015-08-19 | サンデンホールディングス株式会社 | 電磁連結装置 |
| KR102333724B1 (ko) | 2015-10-23 | 2021-12-01 | 삼성전자주식회사 | 디스플레이 장치 및 그 제어 방법 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5580867A (en) * | 1978-12-12 | 1980-06-18 | Sony Corp | Block synchronous signal extracting circuit |
| US4453260A (en) * | 1982-06-15 | 1984-06-05 | Tokyo Shibaura Denki Kabushiki Kaisha | Synchronizing circuit for detecting and interpolating sync signals contained in digital signal |
| US4791622A (en) * | 1983-09-19 | 1988-12-13 | Storage Technology Partners 11 | Optical data format employing resynchronizable data sectors |
| DE3642636A1 (de) * | 1986-12-13 | 1988-06-23 | Bosch Gmbh Robert | Verfahren zur erfassung und substitution von synchronworten in pcm-daten und schaltungsanordnung hierfuer |
| US5021897A (en) * | 1987-06-12 | 1991-06-04 | Matsushita Electric Industrial Co., Ltd. | Memory system for recording and reproducing block unit data |
| JP2998161B2 (ja) * | 1990-01-17 | 2000-01-11 | 富士通株式会社 | 記録媒体の同期信号読取方法及び装置 |
| JP2900507B2 (ja) * | 1990-04-26 | 1999-06-02 | ソニー株式会社 | デジタルデータ再生装置 |
| EP0473293B1 (en) * | 1990-08-03 | 1996-09-25 | Canon Kabushiki Kaisha | Synchronous signal detection circuit and synchronous signal detection apparatus having the same |
| JP3306938B2 (ja) * | 1992-11-25 | 2002-07-24 | ソニー株式会社 | 同期符号抽出回路 |
| US5363360A (en) * | 1993-09-27 | 1994-11-08 | Eastman Kodak Company | Method and apparatus for detecting and processing synchronization marks extracted from a prerecorded wobbled groove on a compact disk |
-
1995
- 1995-03-31 KR KR1019950007477A patent/KR0148181B1/ko not_active Expired - Fee Related
-
1996
- 1996-03-29 JP JP8076596A patent/JP2937853B2/ja not_active Expired - Fee Related
- 1996-03-29 EP EP96302249A patent/EP0735535B1/en not_active Expired - Lifetime
- 1996-03-29 DE DE69611945T patent/DE69611945T2/de not_active Expired - Fee Related
- 1996-03-29 US US08/624,928 patent/US5848218A/en not_active Expired - Fee Related
- 1996-03-31 CN CN96107260A patent/CN1077318C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5848218A (en) | 1998-12-08 |
| DE69611945T2 (de) | 2001-06-21 |
| EP0735535A2 (en) | 1996-10-02 |
| JP2937853B2 (ja) | 1999-08-23 |
| DE69611945D1 (de) | 2001-04-12 |
| EP0735535B1 (en) | 2001-03-07 |
| CN1144957A (zh) | 1997-03-12 |
| KR960035580A (ko) | 1996-10-24 |
| EP0735535A3 (en) | 1997-08-13 |
| JPH08339640A (ja) | 1996-12-24 |
| CN1077318C (zh) | 2002-01-02 |
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| Date | Code | Title | Description |
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| A201 | Request for examination | ||
| PA0109 | Patent application |
St.27 status event code: A-0-1-A10-A12-nap-PA0109 |
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| PA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-PA0201 |
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| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
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