A/D conversion apparatus

Details A/D conversion apparatus A/D conversion apparatus

2008-08-28

2010-02-16

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Multiplex

C341S112000, C341S116000, C341S117000, C341S142000, C341S155000

Reexamination Certificate

active

07663520

ABSTRACT:
An A/D conversion apparatus performs motor current detection in an A/D conversion period corresponding to two phases out of three phases of a sinusoidal drive motor, using reduced register resources while minimizing the number of A/D converters. The A/D conversion apparatus includes: a selection unit selecting one of a plurality of input channels; an A/D converter converting an analog signal from the selected input channel to a digital signal; a start register holding a start channel number of sequential conversion; an end register holding an end channel number of the sequential conversion; a prohibition information holding unit holding prohibition information indicating an input channel to be excluded from the sequential conversion; and a control unit causing the selection unit to select, in channel number order, input channels corresponding to channel numbers from the start channel number to the end channel number except the input channel indicated by the prohibition information.

REFERENCES:
patent: 4562545 (1985-12-01), Hasegawa
patent: 5349351 (1994-09-01), Obara et al.
patent: 6356216 (2002-03-01), Chen et al.
patent: 6486809 (2002-11-01), Figoli
patent: 6933867 (2005-08-01), Honda
patent: 7009537 (2006-03-01), Kabune
patent: 7242335 (2007-07-01), Rubin et al.
patent: 7400283 (2008-07-01), Zhu
patent: 7474240 (2009-01-01), Barrenscheen
patent: 7477174 (2009-01-01), Onde
patent: 2005/0040978 (2005-02-01), Morita et al.
patent: 2005/0219103 (2005-10-01), Ogawa
patent: 2008/0204289 (2008-08-01), Miettinen
patent: 2008/0252243 (2008-10-01), Azuma
patent: 2003-284374 (2003-10-01), None
Texas Instruments, “TMS320LF/C240xA DSP Controllers Reference Guide—Systems and Peripherals,” Literature No. SPRU357C, Revised May 2006.
English language Abstract of JP 2003-284374 A.

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