JPS5746527A - Reading circuit of disc drive - Google Patents
Reading circuit of disc driveInfo
- Publication number
- JPS5746527A JPS5746527A JP55122580A JP12258080A JPS5746527A JP S5746527 A JPS5746527 A JP S5746527A JP 55122580 A JP55122580 A JP 55122580A JP 12258080 A JP12258080 A JP 12258080A JP S5746527 A JPS5746527 A JP S5746527A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- output
- gate
- disc drive
- 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
- G11B20/10009—Improvement or modification of read or write signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Magnetic Recording (AREA)
- Manipulation Of Pulses (AREA)
Abstract
PURPOSE:To prevent the occurrence of noise, by generating a gate signal from a signal, which is read by a head and is taken out through an amplifying circuit, and by using this generated signal to gate the output of a zero cross circuit. CONSTITUTION:The signal read by a head 1 is reproduced to a pulse signal through a filter circuit 3, a differentiating circuit 4, a zero cross circuit 5, a gate circuit 8, a pulse shaping circuit 6, etc. Meanwhile, the output of the filter circuit 3 is inputted to a high output part detecting circuit 7, and the circuit 7 generates a gate signal from the output signal of the circuit 3. The gate circuit 8 permits the output of the circuit to pass through only when the output signal of the circuit 7 is outputted. Consequently, the occurrence of false pulses is suppressed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55122580A JPS5746527A (en) | 1980-09-04 | 1980-09-04 | Reading circuit of disc drive |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55122580A JPS5746527A (en) | 1980-09-04 | 1980-09-04 | Reading circuit of disc drive |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5746527A true JPS5746527A (en) | 1982-03-17 |
Family
ID=14839423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55122580A Pending JPS5746527A (en) | 1980-09-04 | 1980-09-04 | Reading circuit of disc drive |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5746527A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0139757A1 (en) * | 1983-03-08 | 1985-05-08 | Sony Corporation | Apparatus for reproducing data signal |
JPS60160072A (en) * | 1984-01-31 | 1985-08-21 | Matsushita Electric Ind Co Ltd | Signal reading circuit of magnetic disk device |
JPH03163909A (en) * | 1989-11-21 | 1991-07-15 | Mitsubishi Electric Corp | Pulse peak detection circuit |
-
1980
- 1980-09-04 JP JP55122580A patent/JPS5746527A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0139757A1 (en) * | 1983-03-08 | 1985-05-08 | Sony Corporation | Apparatus for reproducing data signal |
JPS60160072A (en) * | 1984-01-31 | 1985-08-21 | Matsushita Electric Ind Co Ltd | Signal reading circuit of magnetic disk device |
JPH03163909A (en) * | 1989-11-21 | 1991-07-15 | Mitsubishi Electric Corp | Pulse peak detection circuit |
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