发明名称 |
Magnetic reproducing system for a digital signal |
摘要 |
A magnetic reproducing system reproduces a recording two-valued code signal from a magnetic recording medium, and detects the signal level of the reproduced signal to reproduce a digital signal of a desired two-valued code, where the recording two-valued code signal is obtained by passing the digital signal of the above desired two-valued code through a converter and a delay circuit and then feeding back this digital signal to carry out a modulo-2 addition. The magnetic recording medium is recorded with the above recording two-valued code signal. The magnetic reproducing system comprises a magnetic head for reproducing the two-valued code recorded on the magnetic recording medium, an equalizer for performing wave-equalization of the signal reproduced by the magnetic head, and a signal detection circuit for detecting the signal level of a three-valued code signal obtained from the above equalizer, to produce a two-valued detection signal in which signal levels corresponding to "+1" and "-1" of the three-valued code signal is set to a signal level "+1" and a signal level corresponding to "0" of the three-valued code signal is set to a signal level "0", as a reproduced output signal of the digital signal.
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申请公布号 |
US4495528(A) |
申请公布日期 |
1985.01.22 |
申请号 |
US19820394942 |
申请日期 |
1982.07.02 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
SASAMURA, KOHHEI;MORIYAMA, MASARU |
分类号 |
G11B5/09;G11B20/10;(IPC1-7):G11B5/09 |
主分类号 |
G11B5/09 |
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