JPS56147576A - Dropout compensating circuit for audio signal - Google Patents
Dropout compensating circuit for audio signalInfo
- Publication number
- JPS56147576A JPS56147576A JP5147380A JP5147380A JPS56147576A JP S56147576 A JPS56147576 A JP S56147576A JP 5147380 A JP5147380 A JP 5147380A JP 5147380 A JP5147380 A JP 5147380A JP S56147576 A JPS56147576 A JP S56147576A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- level
- dropout
- audio 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.)
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To compensate only when dropout is produced in an audio information component, by detecting the level of an audio carrier component and producing a dropout detection signal. CONSTITUTION:The audio carrier signal separated from the band pass filter BPF2 is input to the demodulator 4 via the limiter 4'. The output of the demodulator 4 is output via the switch 5. The signal level in the limiter 4' is detected at the level detector 12 to control the head amplifier 1. The output of the level detector 12 and the reference voltage Vr are compared at the level comparator 13, and the pulsive signal with this compared output is expanded by a given width at the pulse width strecher 14 to obtain on/off signal of the switch 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5147380A JPS56147576A (en) | 1980-04-18 | 1980-04-18 | Dropout compensating circuit for audio signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5147380A JPS56147576A (en) | 1980-04-18 | 1980-04-18 | Dropout compensating circuit for audio signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56147576A true JPS56147576A (en) | 1981-11-16 |
Family
ID=12887913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5147380A Pending JPS56147576A (en) | 1980-04-18 | 1980-04-18 | Dropout compensating circuit for audio signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56147576A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0140192A2 (en) * | 1983-10-19 | 1985-05-08 | Hitachi, Ltd. | Apparatus for detecting a drop-out in a magnetic recording/reproducing apparatus |
JPS6173281A (en) * | 1984-09-17 | 1986-04-15 | Pioneer Electronic Corp | Information reproducing device |
JPS61113165A (en) * | 1984-11-06 | 1986-05-31 | Pioneer Electronic Corp | Recorded information reproducing device |
-
1980
- 1980-04-18 JP JP5147380A patent/JPS56147576A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0140192A2 (en) * | 1983-10-19 | 1985-05-08 | Hitachi, Ltd. | Apparatus for detecting a drop-out in a magnetic recording/reproducing apparatus |
JPS6087469A (en) * | 1983-10-19 | 1985-05-17 | Hitachi Ltd | Drop-out detector |
JPH0326469B2 (en) * | 1983-10-19 | 1991-04-10 | Hitachi Ltd | |
JPS6173281A (en) * | 1984-09-17 | 1986-04-15 | Pioneer Electronic Corp | Information reproducing device |
JPS61113165A (en) * | 1984-11-06 | 1986-05-31 | Pioneer Electronic Corp | Recorded information reproducing device |
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