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:
Feb. 10, 2009
Filed:
Jul. 12, 2004
Shigeki Yagi, Ogori, JP;
Tetsuya Ashizuka, Dazaihu, JP;
Toshiyuki Sugitani, Miyaki-gun, JP;
Takatsugu Ito, Chikushino, JP;
Shinji Fukuda, Fukuoka, JP;
Yoshihiro Takehisa, Fukuoka, JP;
Shigeki Yagi, Ogori, JP;
Tetsuya Ashizuka, Dazaihu, JP;
Toshiyuki Sugitani, Miyaki-gun, JP;
Takatsugu Ito, Chikushino, JP;
Shinji Fukuda, Fukuoka, JP;
Yoshihiro Takehisa, Fukuoka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In a time division multiplex access (TDMA-TDD) type wireless communication system in which a communication operation is carried out between a first communication apparatus (mother appliance) and a second communication apparatus (child appliance), and since a slot diversity mode is selected while considering power consumption on the side of the second communication apparatus, the wireless communication system performs such a wireless communication having a higher wireless quality. Based upon a power supply remaining energy capacity on the side of the second communication apparatus, and an electromagnetic wave environment when a wireless signal is received, a slot diversity mode is selected. For example, it is so assumed that 1 frame corresponds to 8 slots, a wireless signal is transmitted from the first communication apparatus to the second communication apparatus by employing two, or more slots, whereas a wireless signal is transmitted from the second communication apparatus to the first communication by employing one slot within the remaining 2 to 6 (8-2) pieces of the slots. As a result, since a total number of the wireless transmission slots used in the second communication apparatus is reduced, transmission electric power can be lowered which may occupy a large ratio within the entire power consumption.