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:
Nov. 23, 2010
Filed:
May. 11, 2006
Kohtaro Ohba, Ibaraki, JP;
Shigeru Yamada, Osaka, JP;
Kohtaro Ohba, Ibaraki, JP;
Shigeru Yamada, Osaka, JP;
Abstract
A communication procedure has been developed that allows even a low-rate CPU to perform stable communication so as to realized wireless network nodes, which have a long communication distance and also have a long battery life. Each wireless network node decides its own time slot number by use of random numbers and transmits it after delaying the transmission by the number of time slots. When receiving the unique number from the wireless network node, a master unit transmits, to the wireless network node, an ACK signal together with the unique number. When receiving its unique number, the wireless network node gets into a sleep state for a period of time. In this way, each time communication is established, the number of active wireless network nodes is reduced.