The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Nov. 11, 2011
Akihiro Toriyama, Kanagawa, JP;
Kazuki Watanabe, Kanagawa, JP;
Makoto Shindo, Kanagawa, JP;
Makoto Toyoshima, Kanagawa, JP;
Yosuke Tanno, Kanagawa, JP;
Akihiro Toriyama, Kanagawa, JP;
Kazuki Watanabe, Kanagawa, JP;
Makoto Shindo, Kanagawa, JP;
Makoto Toyoshima, Kanagawa, JP;
Yosuke Tanno, Kanagawa, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
There is included a detection unit for detecting a magnitude of a surplus of a direct current to a source voltage generated by a voltage generation unit generating the source voltage from the direct current obtained by rectifying a signal inputted from an antenna terminal. A data processing unit operating at the source voltage and performing data processing on a transmission/reception signal includes a clock control unit for determining a frequency of a clock signal for the data processing based on the magnitude of the surplus current detected by the detection unit in a state where a frequency of the clock signal is set to a predetermined reference frequency. Since the power consumed by the data processing unit at the time of detecting the surplus of the direct current is determined by the specific reference frequency, the surplus of the direct current can be detected as an absolute surplus.