Error detection/correction and fault detection/recovery – Pulse or data error handling – Transmission facility testing
Reexamination Certificate
2007-05-08
2007-05-08
Decady, Albert (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Transmission facility testing
C714S704000, C714S748000
Reexamination Certificate
active
10309886
ABSTRACT:
A signal transmit-receive device of the invention reduces the number of high-speed signal lines required for connecting a transmitting circuit group and a receiving circuit group, and for running a loopback test on a signal transmit-receive device. The loopback test circuit uses an error detecting circuit, a test signal producing circuit, and a wiring for transmitting error information. The error detecting circuit compares a test signal pattern defined in advance by a first communication device and a received signal pattern. The test signal producing circuit produces the test signal pattern based on error information. If an error is detected, the error signal is transmitted to the test signal producing circuit through the wiring. The test signal producing circuit produces a predetermined test signal pattern if the error signal DE has an L level; upon receiving H level, it sends back the predetermined test signal pattern to the first communication device.
REFERENCES:
patent: 3879577 (1975-04-01), Progler
patent: 4686668 (1987-08-01), Koseki et al.
patent: 5787114 (1998-07-01), Ramamurthy et al.
patent: 5790563 (1998-08-01), Ramamurthy et al.
patent: 5956370 (1999-09-01), Ducaroir et al.
patent: 6005696 (1999-12-01), Joline et al.
patent: 6560727 (2003-05-01), Pierson et al.
Baba Takashige
Isomura Satoru
Saito Tatsuya
Takeuchi Yusuke
Yamashita Hiroki
A. Marquez, Esq. Juan Carlos
Alphonse Fritz
De'cady Albert
Fisher Esq. Stanley P.
Reed Smith LLP
LandOfFree
Signal transmit-receive device, circuit, and loopback test... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal transmit-receive device, circuit, and loopback test..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal transmit-receive device, circuit, and loopback test... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3746314