发明名称 |
Interpolating gain amplifier for information reproducing apparatus |
摘要 |
An information reproducing apparatus which includes: pickup section for converting information recorded in a recording medium into an electrical signal; preprocessing section for amplifying a signal output from the pickup section; automatic gain control circuit for receiving a signal output from the preprocessing section as an input signal and for eliminating an amplitude change component other than the information from the input signal; and digital signal reproducing section for reproducing a digital signal corresponding to a signal output from the automatic gain control circuit, the automatic gain control circuit including: amplifier section for amplifying the input signal so as to be output as an output signal, and for receiving a control signal for controlling a gain; and control section for controlling the gain of the amplifier section, the control section including: amplitude detector for detecting an amplitude of the output signal; control signal generator for generating a control signal corresponding to the amplitude of the output signal; memory section for storing the control signal; and interpolation section for detecting an error signal caused by an input signal in an impulse form from the control signal and replacing the error signal with an interpolation signal.
|
申请公布号 |
US5694386(A) |
申请公布日期 |
1997.12.02 |
申请号 |
US19940330855 |
申请日期 |
1994.10.27 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
HIRAJIMA, HIROSHIGE;FUJI, HIROSHI |
分类号 |
G11B7/005;G11B20/10;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/005 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|