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:
Jul. 28, 2009
Filed:
Jan. 21, 2005
Tetsuo Ueno, Funabashi, JP;
Shigetaka Noguchi, Nagareyama, JP;
Tetsuo Ueno, Funabashi, JP;
Shigetaka Noguchi, Nagareyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A wireless communication apparatus receives an external signal, and includes (i) a received signal level determination section for detecting a power level of the received signal and (ii) a correlation detection/determination section for detecting a correlation associated with the received signal. Moreover, the wireless communication apparatus switches between reception standby states as required, the reception standby states, including: (a) a normal operation mode in which a shift to a reception state is determined in accordance with whether or not the correlation is detected by the correlation detection/determination section; and (b) a low power consumption mode in which the shift to the reception state is determined in accordance with whether or not a received signal power level is detected by the received signal level determination section. With this, power consumption can be reduced, but a range of reception power of a signal that can be received is not narrowed. That is, the power consumption of the communication apparatus can be reduced, and the communication apparatus is allowed to receive a signal whose reception power falls within a wide range.