WO1985000066A1 - Synchronizing circuit - Google Patents
Synchronizing circuit Download PDFInfo
- Publication number
- WO1985000066A1 WO1985000066A1 PCT/JP1984/000307 JP8400307W WO8500066A1 WO 1985000066 A1 WO1985000066 A1 WO 1985000066A1 JP 8400307 W JP8400307 W JP 8400307W WO 8500066 A1 WO8500066 A1 WO 8500066A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- address
- internal
- circuit
- synchronizing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
-
- 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
- G11B20/1806—Pulse code modulation systems for audio signals
- G11B20/1809—Pulse code modulation systems for audio signals by interleaving
-
- 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
- G11B20/00007—Time or data compression or expansion
-
- 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
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
-
- 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
Definitions
- the present invention relates to a synchronization circuit suitable for use, for example, in a PCM demodulator.
- a tape is wound around 90 degrees of the rotary head drum, and the PCM data of the audio signal is compressed on the time axis, so that the head is 90 degrees.
- An apparatus has been proposed in which recording is performed for each period in which the tape is in contact with a range.
- the error correction code since the error correction code is applied to the entire address signal and the data signal, the correction capability cannot be enhanced by interleaving only the data signal.
- the address signal in order to perform interleaving, the address signal must be stored together, and a large amount of memory is required.
- Honkiaki aims to achieve accurate synchronization with a simple configuration.
- FIG. 1 is a diagram for explaining the present invention
- FIG. 2 is a block diagram of an example of the present invention.
- FIG. 2 is a block diagram of a reproducing apparatus having a synchronizing circuit. If the above-mentioned signals are arranged in a human input device (1), the signals are supplied as N R modulated RF signals. This signal is supplied to the demodulation path 61 (2) to be a code signal of "1" "0 '" This code signal is supplied to the address signal error detection fef path (3) .
- This signal is supplied to the internal synchronization signal source ( 6 ) to form an internal synchronization signal as shown in FIG. 1D, and this signal is supplied to the end EJ path.
- a clock signal is formed by the synchronization signal source ( 6 ) at the timing immediately after the detection bit P as shown in FIG. 1E.
- the clock signal from the signal source (6) is supplied to an internal i-address signal generation circuit (10) to form an address signal.
- the address signal is extracted.
- the extracted address signal is supplied to the internal address generation circuit ⁇ ).
- the data signal D and the error correction code C of the signal from the parallel conversion circuit ( 8 ) are supplied to the data detection circuit (12).
- the data signal D and the error correction code C are supplied to the random access memory (13), and the above-mentioned address signal from the switching fej path (11) is supplied to the memory (13). It is supplied, and writing is performed according to this address signal.
- the signal in this memory (13) is corrected!
- the error is corrected on the E EI path (14), read out at a predetermined timing,
- the signal is converted into an analog signal by the DA conversion 11 path (15) and output to the output terminal (16).
- an address signal A and an error detection bit P are provided immediately after the synchronization signal S.
- the error rate can be increased by providing a high detection bit.
- malfunction can be prevented at the time of variable speed reproduction by performing an operation in accordance with the speed by the internal address generation circuit (10) or by forming a write stop signal.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84902365T ATE47240T1 (de) | 1983-06-14 | 1984-06-13 | Synchronisierungsschaltung. |
DE8484902365T DE3480130D1 (en) | 1983-06-14 | 1984-06-13 | Synchronizing circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58106257A JPS59231713A (ja) | 1983-06-14 | 1983-06-14 | 同期回路 |
JP58/106257 | 1983-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1985000066A1 true WO1985000066A1 (en) | 1985-01-03 |
Family
ID=14429041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1984/000307 WO1985000066A1 (en) | 1983-06-14 | 1984-06-13 | Synchronizing circuit |
Country Status (7)
Country | Link |
---|---|
US (1) | US4669000A (ja) |
EP (1) | EP0146636B1 (ja) |
JP (1) | JPS59231713A (ja) |
KR (1) | KR920008049B1 (ja) |
AU (1) | AU583251B2 (ja) |
DE (1) | DE3480130D1 (ja) |
WO (1) | WO1985000066A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2308469A (en) * | 1995-12-22 | 1997-06-25 | Motorola Inc | Power conserving clocking system |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60251564A (ja) * | 1984-05-28 | 1985-12-12 | Hitachi Ltd | 光デイスクにおけるアドレス情報読取り誤り救済方法 |
JPH0634298B2 (ja) * | 1985-02-20 | 1994-05-02 | 株式会社日立製作所 | アドレス回路 |
JPS62138327U (ja) * | 1986-02-20 | 1987-09-01 | ||
JP2523509B2 (ja) * | 1986-06-30 | 1996-08-14 | 株式会社東芝 | 磁気記録再生装置 |
JPH0743894B2 (ja) * | 1986-06-30 | 1995-05-15 | 株式会社東芝 | 磁気記録再生装置 |
US4786985A (en) * | 1986-08-21 | 1988-11-22 | Ampex Corporation | Method and apparatus for extracting binary signals included in vertical blanking intervals of video signals |
JPS6386980A (ja) * | 1986-09-30 | 1988-04-18 | Toshiba Corp | 周期ノイズ除去装置 |
FR2606239A1 (fr) * | 1986-10-30 | 1988-05-06 | Bull Sa | Procede et dispositif de transmission de donnees numeriques |
DE3737306A1 (de) * | 1987-11-04 | 1989-05-18 | Thomson Brandt Gmbh | Verfahren zur uebertragung eines digitalsignals |
JPH0821213B2 (ja) * | 1988-08-05 | 1996-03-04 | 富士通株式会社 | セクターサーボ情報検出方法 |
JP2745704B2 (ja) * | 1989-07-26 | 1998-04-28 | ソニー株式会社 | 情報伝送装置 |
US5264970A (en) * | 1991-06-21 | 1993-11-23 | Industrial Technology Research Institute | Digital signal reproducing apparatus |
US5499147A (en) * | 1993-12-02 | 1996-03-12 | Industrial Technology Research Institute | Rotary head recording and reproduction apparatus with memory and method of operation which compares a reproduced signal with an original signal |
US5621743A (en) * | 1994-02-18 | 1997-04-15 | Sanyo Electric Co., Ltd. | CD-ROM decoder for correcting errors in header data |
JPH08111075A (ja) * | 1994-10-11 | 1996-04-30 | Sony Corp | 補間アドレス生成装置及び補間アドレス生成方法 |
JP4087224B2 (ja) * | 2002-11-08 | 2008-05-21 | パイオニア株式会社 | 情報記録再生装置及び情報再生方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5665320A (en) * | 1979-10-31 | 1981-06-03 | Sony Corp | Processor for digital signal |
JPS58194117A (ja) * | 1982-05-04 | 1983-11-12 | Matsushita Electric Ind Co Ltd | デイジタル信号記録の同期方式 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4433348A (en) * | 1979-07-06 | 1984-02-21 | Soundstream, Inc. | Apparatus and method for requiring proper synchronization of a digital data flow |
JPS5753806A (en) * | 1980-09-16 | 1982-03-31 | Toshiba Corp | Processor of digital signal |
JPS5753802A (en) * | 1980-09-16 | 1982-03-31 | Toshiba Corp | Processor of digital signal |
JPS5837809A (ja) * | 1981-08-28 | 1983-03-05 | Matsushita Electric Ind Co Ltd | Pcm録音再生装置 |
JPS5864622A (ja) * | 1981-10-13 | 1983-04-18 | Victor Co Of Japan Ltd | デ−タ再生装置 |
DE3151251A1 (de) * | 1981-12-24 | 1983-07-07 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren und schaltungsanordnung zur wiedergabe digital codierter signale |
-
1983
- 1983-06-14 JP JP58106257A patent/JPS59231713A/ja active Granted
-
1984
- 1984-06-13 US US06/706,924 patent/US4669000A/en not_active Expired - Lifetime
- 1984-06-13 WO PCT/JP1984/000307 patent/WO1985000066A1/ja active IP Right Grant
- 1984-06-13 EP EP84902365A patent/EP0146636B1/en not_active Expired
- 1984-06-13 KR KR1019840003310A patent/KR920008049B1/ko not_active IP Right Cessation
- 1984-06-13 DE DE8484902365T patent/DE3480130D1/de not_active Expired
- 1984-06-13 AU AU30633/84A patent/AU583251B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5665320A (en) * | 1979-10-31 | 1981-06-03 | Sony Corp | Processor for digital signal |
JPS58194117A (ja) * | 1982-05-04 | 1983-11-12 | Matsushita Electric Ind Co Ltd | デイジタル信号記録の同期方式 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0146636A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2308469A (en) * | 1995-12-22 | 1997-06-25 | Motorola Inc | Power conserving clocking system |
Also Published As
Publication number | Publication date |
---|---|
KR920008049B1 (ko) | 1992-09-21 |
AU583251B2 (en) | 1985-01-11 |
KR850000155A (ko) | 1985-02-25 |
EP0146636A4 (en) | 1987-08-12 |
EP0146636B1 (en) | 1989-10-11 |
JPS59231713A (ja) | 1984-12-26 |
DE3480130D1 (en) | 1989-11-16 |
AU3063384A (en) | 1985-01-11 |
JPH0444342B2 (ja) | 1992-07-21 |
EP0146636A1 (en) | 1985-07-03 |
US4669000A (en) | 1987-05-26 |
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