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Patent Searching and Data


Title:
SYSTEM AND METHOD FOR PROVIDING CLOCK SIGNAL REQUIRED BY NEAR FIELD COMMUNICATION CHIP
Document Type and Number:
WIPO Patent Application WO/2013/040947
Kind Code:
A1
Abstract:
A system and method for providing a clock signal required by a near field communication chip is provided in the invention. A voltage control crystal oscillator generates a clock frequency, and outputs a sine wave analogy clock signal to an inverter. The inverter outputs a first square wave digital clock signal to a power supply management chip. The power supply management chip outputs a second square wave digital clock signal to a dual power supply conversion buffer, so that the dual power supply conversion buffer can covert the second square wave digital clock signal to a third square wave digital clock signal.

Inventors:
LUO HONGGUANG (CN)
JIA QIANGLI (CN)
Application Number:
PCT/CN2012/078843
Publication Date:
March 28, 2013
Filing Date:
July 19, 2012
Export Citation:
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Assignee:
HUIZHOU TCL MOBILE COMM CO LTD (CN)
LUO HONGGUANG (CN)
JIA QIANGLI (CN)
International Classes:
H03K3/02
Foreign References:
CN1613192A2005-05-04
CN201150078Y2008-11-12
US20100072963A12010-03-25
CN102394604A2012-03-28
Attorney, Agent or Firm:
ESSEN PATENT & TRADEMARK AGENCY (CN)
深圳翼盛智成知识产权事务所(普通合伙) (CN)
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Claims: