Title:
SIGNAL CHANGEOVER CONTROL METHOD FOR A/D CONVERTER
Document Type and Number:
Japanese Patent JP3642125
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To correct a disadvantage in the case of switching a signal with plural gains and outputting the selected signal with respect to the floating A/D converter.
SOLUTION: In this control method, a signal amplified in response to an input signal level is quantized by an A/D converter 2, the gain of the quantized signal is adjusted by a gain correction circuit 3, the signal whose gain is adjusted in response to the input signal level is given to a digital signal processor DSP 4 and an output signal synthesis circuit 5, from which a signal with better S/N is selected and outputted. Then data synthesizing two signal data at a prescribed ratio at a border between signals (DA, DB) switched especially by the circuits 4, 5 are switched by providing a synthesis period using N samples.
Inventors:
Hidetoshi Nariki
Yasuo Sato
Yasuo Sato
Application Number:
JP29824296A
Publication Date:
April 27, 2005
Filing Date:
October 22, 1996
Export Citation:
Assignee:
Victor Company of Japan, Ltd.
International Classes:
H03M1/12; H03M1/18; (IPC1-7): H03M1/18; H03M1/12
Domestic Patent References:
| JP3032227A |
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