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:
Jul. 10, 2001
Filed:
Mar. 10, 1998
Takumi Miyashita, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A data communication system for executing data transmission and reception by modulating data using a code according to a CDMA system, in the field of optical communication, includes a code modulator for generating a first modulation code such as a spreading code on the basis of a transmission clock which has a transmission speed higher than a bit rate of a bit clock of data, and multiplying each bit of the data by the first modulation code so as to generate a code-modulated signal. The data communication system further includes a clock extractor for extracting a reception clock, which has a transmission speed corresponding to the bit rate of the bit clock, from the received code-modulated signal. The data communication system further includes a code demodulator for generating a second modulation code equivalent to the first modulation code on the basis of the reception clock, and multiplying the code-modulated signal by the second modulation code so as to restore the data, and a reception data synchronizer for outputting reception data that is synchronized with the restored data and second modulation code.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile