Title:
OUTPUT CONVERSION CIRCUIT AND FINGERPRINT RECOGNITION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/067109
Kind Code:
A1
Abstract:
The present invention provides an output conversion circuit and a fingerprint recognition system. The output conversion circuit comprises: a comparator, a counter, and a reference signal generator. The counter comprises: a first input end used for receiving a first output signal; a second input end; and an output end used for generating a comparative output signal. The counter is connected to the output end of the comparator and used for generating a second output signal. The reference signal generator is connected to the second input end and used for generating a reference signal. The reference signal generator comprises a random number generator which is used for generating a random number, wherein the reference signal is associated with the random number. The comparator generates the comparative output signal according to the first output signal and the reference signal. The output conversion circuit provided in the present invention has the advantage of improving the statistical linearity of an output signal.
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Inventors:
TAN BO (CN)
Application Number:
PCT/CN2016/071681
Publication Date:
April 27, 2017
Filing Date:
January 21, 2016
Export Citation:
Assignee:
SHENZHEN HUIDING TECHNOLOGY CO (CN)
International Classes:
G06V30/144
Foreign References:
| CN101344917A | 2009-01-14 | |||
| CN1801627A | 2006-07-12 | |||
| CN104393856A | 2015-03-04 | |||
| CN104298962A | 2015-01-21 |
Other References:
See also references of EP 3206159A4
Attorney, Agent or Firm:
GUANGDONG GUANGHE LAW FIRM (CN)
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