JPS5593509A - Signal detection circuit - Google Patents
Signal detection circuitInfo
- Publication number
- JPS5593509A JPS5593509A JP16158878A JP16158878A JPS5593509A JP S5593509 A JPS5593509 A JP S5593509A JP 16158878 A JP16158878 A JP 16158878A JP 16158878 A JP16158878 A JP 16158878A JP S5593509 A JPS5593509 A JP S5593509A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- amplitude
- differentiated
- peak
- detector
- 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.)
- Granted
Links
Landscapes
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To reduce the signal detection error rate dependent upon the amplitude discrimination system by improving amplitude fluctuation of a reproducing signal, which is differentiated for peak detection, by an LPF.
CONSTITUTION: Correction frequency modulation signal 14 reproduced from a magnetic tape and passing through transducer 4 and the first LPF6 is differentiated by differentiator 7 so that the peak may be detected by zero crossing detector 8, and the frequency characteristic is inverted, and the signal increases the amplitude according as the signal has a higher recording frequency, and therefore, the amplitude is changed in steps according to data patterns. This differentiated signal has the signal waveform of a high frequency attenuated by slice level generator 10 and the second LPF9 provided between level detector 11 and differentiator 7 and is so improved that peak amplitude fluctuation may be uniform. Consequently, the differentiated output which has amplitude fluctuation improved by the slice level, which is not affected by data patterns, is detected by detector 11 surely, so that the signal detection error generation rate can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16158878A JPS5593509A (en) | 1978-12-29 | 1978-12-29 | Signal detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16158878A JPS5593509A (en) | 1978-12-29 | 1978-12-29 | Signal detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5593509A true JPS5593509A (en) | 1980-07-16 |
JPS6227444B2 JPS6227444B2 (en) | 1987-06-15 |
Family
ID=15737975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16158878A Granted JPS5593509A (en) | 1978-12-29 | 1978-12-29 | Signal detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5593509A (en) |
-
1978
- 1978-12-29 JP JP16158878A patent/JPS5593509A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6227444B2 (en) | 1987-06-15 |
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