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:
Aug. 12, 2008
Filed:
Apr. 11, 2005
Sumimasa Sunaga, Kawasaki, JP;
Shoji Taniguchi, Kawasaki, JP;
Masami Kanasugi, Kawasaki, JP;
Koichi Kuroiwa, Kawasaki, JP;
Sumimasa Sunaga, Kawasaki, JP;
Shoji Taniguchi, Kawasaki, JP;
Masami Kanasugi, Kawasaki, JP;
Koichi Kuroiwa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Shift code patterns at four continuous phases obtained by dividing 15 shift code patterns given to the respective flip-flops of a linear feedback shift register of degree 4 into four parts are stored in a code memory (). Besides, mask code patterns to shift a phase of a PN code (PN) to be generated by every four phases, are stored in a code mask memory (). Next, a logical operation is performed at a phase shift circuit () by using the shift code pattern outputted from the code memory () and the mask code pattern outputted from the code mask memory (), to generate a PN code (PN) having a code length of 15 from a random phase.