Title:
A/D CONVERSION CIRCUIT, SIGNAL PROCESSING CIRCUIT, AND SHAKE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/122784
Kind Code:
A1
Abstract:
An A/D conversion circuit comprising a plurality of A/D conversion units, a switch unit, and an arithmetic unit. The plurality of A/D conversion units convert input analog signals into digital signals. The switch unit receives a first analog signal and second analog signal as input and alternately switches the output destinations of the first analog signal and the second analog signal between the plurality of A/D conversion units, per sampling period of the plurality of A/D conversion units. The arithmetic unit performs a differential operation between the result of addition of the digital signals output from the plurality of A/D conversion units having the first analog signal as input, and the result of addition of the digital signals output from the plurality of A/D conversion units having the second analog signal as input, and outputs a third digital signal corresponding to the results of the differential operation.
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Inventors:
HARADA YASUNARI (JP)
WATANABE TAKAMOTO (JP)
WATANABE TAKAMOTO (JP)
Application Number:
PCT/JP2010/002853
Publication Date:
October 28, 2010
Filing Date:
April 20, 2010
Export Citation:
Assignee:
OLYMPUS CORP (JP)
DENSO CORP (JP)
HARADA YASUNARI (JP)
WATANABE TAKAMOTO (JP)
DENSO CORP (JP)
HARADA YASUNARI (JP)
WATANABE TAKAMOTO (JP)
International Classes:
G03B5/00; H03M1/12; H03M1/50; H04N5/232
Foreign References:
| JP2008131298A | 2008-06-05 | |||
| JP2008312185A | 2008-12-25 | |||
| JPH0593742A | 1993-04-16 |
Attorney, Agent or Firm:
TANAI, Sumio et al. (JP)
Sumio Tanai (JP)
Sumio Tanai (JP)
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