JPS56169207A - Detector for pcm reproducer - Google Patents
Detector for pcm reproducerInfo
- Publication number
- JPS56169207A JPS56169207A JP7010980A JP7010980A JPS56169207A JP S56169207 A JPS56169207 A JP S56169207A JP 7010980 A JP7010980 A JP 7010980A JP 7010980 A JP7010980 A JP 7010980A JP S56169207 A JPS56169207 A JP S56169207A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- error
- signal
- output
- clock
- 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.)
- Pending
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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1806—Pulse code modulation systems for audio signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Error Detection And Correction (AREA)
Abstract
PURPOSE:To detect an error due to a dropout of a signal, an error of a synchronizing signal, and fluctuations of a readout clock, by detecting an error without increasing redundancy and by combining with another detecting means. CONSTITUTION:A PCM reproduced waveform (a) is applied to a separating and shaping circuit 1 and while an output signal (b) is supplied to a reading circuit 3, a synchronously separated signal (g) is supplied to a clock generating circuit 2. With a clock from the circuit 2, phase control for the circuit 3 is exercised and data is read out to a terminal T2. The output (d) of a pulse generating circuit 4 for obtaining a constant-width pulse at the inversion position of the signal (b) is applied to an AND circuit 6 and the output (c) of the circuit 2 is delayed 5 and applied to the circuit 6 to obtain an error (f) at a terminal T3. As a resul, error detection is performed without increasing redundancy while data corrections of NRZ, FM, MFM, etc., are not made.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7010980A JPS56169207A (en) | 1980-05-28 | 1980-05-28 | Detector for pcm reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7010980A JPS56169207A (en) | 1980-05-28 | 1980-05-28 | Detector for pcm reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56169207A true JPS56169207A (en) | 1981-12-25 |
Family
ID=13422038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7010980A Pending JPS56169207A (en) | 1980-05-28 | 1980-05-28 | Detector for pcm reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56169207A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6229301B1 (en) | 1997-12-22 | 2001-05-08 | Brown & Sharpe Tesa Sa | Electronic circuit and method for a dimension-measuring device |
-
1980
- 1980-05-28 JP JP7010980A patent/JPS56169207A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6229301B1 (en) | 1997-12-22 | 2001-05-08 | Brown & Sharpe Tesa Sa | Electronic circuit and method for a dimension-measuring device |
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