Analog-to-digital converting apparatus with lower...

Details Analog-to-digital converting apparatus with lower... Analog-to-digital converting apparatus with lower...

2011-01-04

2011-01-04

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Converter compensation

Temperature compensation

C341S117000, C341S118000, C341S155000

Reexamination Certificate

active

07864090

ABSTRACT:
In an A/D converting apparatus, a converting unit has an input terminal and an input-output characteristic. The input-output characteristic has temperature dependence, and the converting unit carries out a process of converting an input voltage signal to digital data. A temperature determining unit has information representing a relationship between a variable of an output of the converting unit and a variable of a temperature around the converting unit according to the temperature dependence of the input-output characteristic of the converting unit. When the specified voltage is applied to the input terminal of the converting unit, the temperature determining unit determines a value of the temperature around the converting unit based on the information and the specified voltage. A reducing unit reduces temperature dependence of the process of converting an input voltage signal to digital data based on the determined value of the temperature around the converting unit.

REFERENCES:
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patent: 6362627 (2002-03-01), Shimamoto et al.
patent: 6891491 (2005-05-01), Nakamura et al.
patent: 2007/0080844 (2007-04-01), Terazawa et al.
patent: 2007/0257642 (2007-11-01), Xiao et al.
patent: 05-259907 (1993-10-01), None
patent: 11-248755 (1999-09-01), None
patent: 2004-274157 (2004-09-01), None
Japanese Office Action dated Oct. 27, 2009, issued in corresponding Japanese Application No. 2008-025962, with English translation.

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