Signal processing circuit

Details Signal processing circuit Signal processing circuit

2006-08-01

2006-08-01

Jeanpierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000, C341S126000, C375S213000, C369S047360

Reexamination Certificate

active

07084802

ABSTRACT:
A signal processing circuit can obtain a ratiometric output with high precision and high responsiveness in a relatively easy and simple way. A pulse generation circuit generates a pulse signal corresponding to an input signal. An integration part generates an integrated voltage having a time slope proportional to an input voltage with a duration specified by the pulse signal being set as an integration period. A hold part holds and outputs a difference voltage between a start voltage and an end voltage of the integrated voltage in the integration period. The integration period is specified at the timing of the pulse signal output from the pulse output circuit, and a ratiometric output is generated by sample holding the integral signal.

REFERENCES:
patent: 5432564 (1995-07-01), Tonami
patent: 5610939 (1997-03-01), Takahashi et al.
patent: 6344778 (2002-02-01), Nakamura et al.
patent: 6587411 (2003-07-01), Hayashi
patent: 11-160121 (1999-06-01), None

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