JPS55113108A - Magnetic recording and reproducing circuit - Google Patents
Magnetic recording and reproducing circuitInfo
- Publication number
- JPS55113108A JPS55113108A JP2123579A JP2123579A JPS55113108A JP S55113108 A JPS55113108 A JP S55113108A JP 2123579 A JP2123579 A JP 2123579A JP 2123579 A JP2123579 A JP 2123579A JP S55113108 A JPS55113108 A JP S55113108A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- period amplitude
- output
- short
- 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
Abstract
PURPOSE: To improve error characteristics of data by removing short-period amplitude variation of a reproduced signal from a disk by providing an integrating circuit with fixed characteristics and a modulation circuit to the next stage of an AGC amplifier.
CONSTITUTION: A signal from head 11 includes long and short period amplitude variations and the long period amplitude variation is removed by amplifier 1 and filter/AGC circuit 2. Then, the output of circuit 2 has its envelope detected by integrating circuits 4 and 6 and both detection outputs modulate 7 and 8 corresponding delay signals of the opposite polarities. Each modulation output is supplied to differential amplifier 9 to generate an output of flat differential signal wavefrom, which is supplied to data reproducing circuit 10 as a signal with no short-period amplitude variation.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2123579A JPS55113108A (en) | 1979-02-24 | 1979-02-24 | Magnetic recording and reproducing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2123579A JPS55113108A (en) | 1979-02-24 | 1979-02-24 | Magnetic recording and reproducing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55113108A true JPS55113108A (en) | 1980-09-01 |
Family
ID=12049367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2123579A Pending JPS55113108A (en) | 1979-02-24 | 1979-02-24 | Magnetic recording and reproducing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55113108A (en) |
-
1979
- 1979-02-24 JP JP2123579A patent/JPS55113108A/en active Pending
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