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:
Oct. 17, 2006
Filed:
Jan. 27, 2003
Shoichiro Kashiwakura, Chiba, JP;
Shoichiro Kashiwakura, Chiba, JP;
Kawasaki Microelectronics, Inc., Chiba, JP;
Abstract
A communication system for transmitting and receiving data at high speed can be self-tested at actual operating speed with low cost, and without increasing the chip area. A test signal generation unit generates test parallel data. A transmitter for test purpose converts the parallel data into serial data. A selector selectively supplies the serial data output from the transmitter to a receiver during a test operation. The receiver converts the serial data into parallel data. After that, a detector detects an error in the parallel data output from the receiver. In this case, only the transmitter is disposed in correspondence with receivers. Serial data output from the transmitters is supplied to the receivers through the selector.