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. 19, 2013
Filed:
May. 11, 2007
Applicants:
Hiroyoshi Yamashita, Kawasaki, JP;
Hiroyuki Fujiyama, Kawasaki, JP;
Inventors:
Hiroyoshi Yamashita, Kawasaki, JP;
Hiroyuki Fujiyama, Kawasaki, JP;
Assignee:
Fujitsu Semiconductor Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A communication device capable of preventing interference due to collision of signals of a plurality of communication devices (slaves) is provided. The communication device characterized by having a receiving part which receives a request signal by radio, a counter which starts count of a count value on reception of the request signal, a comparing part which compares the count value and a comparison value, and a transmitting part which transmits an acknowledge signal by radio in accordance with a result of the comparison is provided.