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:
May. 09, 2000
Filed:
Mar. 01, 1994
Applicant:
Inventors:
Tomoaki Ishifuji, Tokyo, JP;
Eiichi Amada, Tokyo, JP;
Yoshihiro Takiyasu, Higashimurayama, JP;
Genichi Ishii, Hachioji, JP;
Hidehiko Jusa, Hadano, JP;
Shuichi Adachi, Hadano, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375202 ; 375200 ; 380 34 ; 379 58 ; 379 59 ; 455 331 ; 455 531 ; 455 541 ;
Abstract
A frequency hopping communication system having a plurality of wireless mobile stations and at least one base station. Each wireless mobile station is operated to communicate according to a communication frame format generated by a base station. The system performing slow frequency hopping by keeping a frequency hopping interval within each frame. The hopping pattern of a frequency is designated at a field located at the tail of each communication frame by the base station.