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Class Information
Number: 714/716
Name: Error detection/correction and fault detection/recovery > Pulse or data error handling > Transmission facility testing > Test pattern with comparison > Loop-back
Description: Subject matter in which the transmission facility is configured so that the receiver shunts the test pattern back to transmitter for comparison at the transmitter.


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
7404115 Self-synchronising bit error analyser and circuit Jul. 22, 2008
7386767 Programmable bit error rate monitor for serial interface Jun. 10, 2008
7380152 Daisy chained multi-device system and operating method May. 27, 2008
7373577 CAN system May. 13, 2008
7366964 Method, system, and apparatus for loopback entry and exit Apr. 29, 2008
7346819 Through-core self-test with multiple loopbacks Mar. 18, 2008
7337377 Enhanced loopback testing of serial devices Feb. 26, 2008
7325180 System and method to test integrated circuits on a wafer Jan. 29, 2008
7310754 Integrated test circuit, a test circuit, and a test method for performing transmission and reception processing to and from a first and a second macro block at a first frequency Dec. 18, 2007
7287201 Data transmission apparatus and method Oct. 23, 2007
7280302 Disk drive using loopback to calibrate transmission amplitude Oct. 9, 2007
7275195 Programmable built-in self-test circuit for serializer/deserializer circuits and method Sep. 25, 2007
7272756 Exploitive test pattern apparatus and method Sep. 18, 2007
7263286 Fast testing system for optical transceiver and testing method thereof Aug. 28, 2007
7251765 Semiconductor integrated circuit and method for testing a semiconductor integrated circuit Jul. 31, 2007
7231558 System and method for network error rate testing Jun. 12, 2007
7216269 Signal transmit-receive device, circuit, and loopback test method May. 8, 2007
7203460 Automated test of receiver sensitivity and receiver jitter tolerance of an integrated circuit Apr. 10, 2007
7203872 Cache based physical layer self test Apr. 10, 2007
7191371 System and method for sequential testing of high speed serial link core Mar. 13, 2007
7165196 Method for testing serializers/de-serializers Jan. 16, 2007
7127648 System and method for performing on-chip self-testing Oct. 24, 2006
7117402 Background block erase check for flash memories Oct. 3, 2006
7111208 On-chip standalone self-test system and method Sep. 19, 2006
7093172 System and method for determining on-chip bit error rate (BER) in a communication system Aug. 15, 2006
7082557 High speed serial interface test Jul. 25, 2006
7054273 Circuit integrity in a packet-switched network May. 30, 2006
7051252 Ibist identification loopback scheme May. 23, 2006
7047459 Method and system for isolation of a fault location in a communications network May. 16, 2006
7036055 Arrangements for self-measurement of I/O specifications Apr. 25, 2006
7032139 Bit error rate tester Apr. 18, 2006
7028235 Test method and test circuit for electronic device Apr. 11, 2006
7027389 Fast failure detection using RTT time considerations on a non-retransmit medium Apr. 11, 2006
7017087 Enhanced loopback testing of serial devices Mar. 21, 2006
7010595 Apparatus for multi-level loopback test in a community network system and method therefor Mar. 7, 2006
7007209 System of testing the upstream cable modem channel Feb. 28, 2006
7000149 External loopback test mode Feb. 14, 2006
6993693 Analogue/digital interface circuit Jan. 31, 2006
6993689 Data transmission apparatus and method Jan. 31, 2006
6981168 Clock data recovery system Dec. 27, 2005
6981186 Loop diagnostic mode for ADSL modems Dec. 27, 2005
6973600 Bit error rate tester Dec. 6, 2005
6957369 Hidden failure detection Oct. 18, 2005
6950968 System and method for conducting diagnostics in a telecommunications node Sep. 27, 2005
6894977 Inverse multiplexing of digital data May. 17, 2005
6892337 Circuit and method for testing physical layer functions of a communication network May. 10, 2005
6859900 Injection of selected numbers of errors in returned loopback data to provide gray-scale type qantification of loop performance measurements Feb. 22, 2005
6842868 Connection integrity monitor for digital selection circuits Jan. 11, 2005
6826156 Loopback processing method and apparatus Nov. 30, 2004
6802030 Data transfer method Oct. 5, 2004

1 2 3 4


 
 
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