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:
Mar. 18, 2008
Filed:
Feb. 24, 2005
Nobuo Motohashi, Kanagawa, JP;
Nobuo Motohashi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
There is provided a communication system, communication apparatus, and control method. A first communication terminal includes message transmission means for transmitting a first or second message to a second communication terminal in response to an on/off operation for a power supply. The second communication terminal includes: first power supply control means for turning off a main power supply at reception of the first message; second power supply control means for turning on the main power supply at reception of the second message; mode setting means for setting communication means to a receive-only mode at reception of the first message, or setting the communication means to a mode capable of transmitting and receiving at reception of the second message; and sub-power supply providing means for providing a sub power supply for driving the second power supply control means during power-off of the main power supply of the second communication terminal.