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:
Apr. 11, 2006
Filed:
Aug. 13, 2001
Masami Kanasugi, Kawasaki, JP;
Shoji Taniguchi, Kawasaki, JP;
Koichi Kuroiwa, Kawasaki, JP;
Mahiro Hikita, Kawasaki, JP;
Masami Kanasugi, Kawasaki, JP;
Shoji Taniguchi, Kawasaki, JP;
Koichi Kuroiwa, Kawasaki, JP;
Mahiro Hikita, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The FIR filter separately receives input data consisting of transmitting information and composed of bit strings, and additional data which is added in order to transmit the input data. The input data is operated with the additional data. A difference between the additional data corresponding to previous data (for instance, most recent data) among the input data and the additional data corresponding present data is obtained, and the difference and the previous data are operated. Then, the operation results are added and the resultant is outputted as a filter response. The input data and the additional data are separately received to be operated so that the circuit scale of the filter is reduced. Therefore, a chip of the semiconductor integrated circuit can be downsized and thereby cost reduction in the communication system can be realized.