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Class Information
Number: 375/224
Name: Pulse or digital communications > Testing
Description: Subject matter in which at least part of the system is tested.










Sub-classes under this class:

Class Number Class Name Patents
375/225 Data rate 452
375/226 Phase error or phase jitter 553
375/227 Signal noise 545
375/228 With indicator 241


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Next

Patent Number Title Of Patent Date Issued
6947477 Apparatus and method for creating signal and profiles at a receiving station Sep. 20, 2005
6947479 Dynamic wireless link adaptation Sep. 20, 2005
6940263 Testing a transceiver Sep. 6, 2005
6940922 Response calibration method using a frequency-shifted receiver Sep. 6, 2005
6937684 Phase discriminator with a phase compensation circuit Aug. 30, 2005
6934342 Automatic modulation type discrimination apparatus and automatic modulation type discrimination method capable of discriminating plural kinds of modulation types Aug. 23, 2005
6931453 Method and apparatus for resolving protocol-agnostic schemes in an internet protocol multimedia subsystem Aug. 16, 2005
6928242 Built in self test method and circuit for parallel optical transmitters Aug. 9, 2005
6928597 Method and apparatus for testing digital circuitry Aug. 9, 2005
6922438 System for MPSK symbol hypothesis testing Jul. 26, 2005
6915113 Test apparatus for RF receiver Jul. 5, 2005
6912679 System and method for electrical data link testing Jun. 28, 2005
6909978 Signal pre-processing for estimating attributes of a transmission line Jun. 21, 2005
6906526 Non-intrusive cable connection monitoring for use in HFC networks Jun. 14, 2005
6907063 Mobile station, a method of transmitting electronic information, and a communications system Jun. 14, 2005
6904099 Digital modulation signal generator Jun. 7, 2005
6898272 System and method for testing telecommunication devices May. 24, 2005
6898755 Method for increasing physical layer flexibility in cable modem systems May. 24, 2005
6895043 Method and apparatus for measuring quality of upstream signal transmission of a cable modem May. 17, 2005
6891904 Modulation signal analysis apparatus May. 10, 2005
6892053 Bit error estimates from pilot signals May. 10, 2005
6885700 Charge-based frequency measurement bist Apr. 26, 2005
6882683 Monitoring method and monitoring arrangement Apr. 19, 2005
6879628 Apparatus and method for measuring the bit error ratio of a transmission system Apr. 12, 2005
6879651 Phase-adjustment control method and information processing apparatus Apr. 12, 2005
6867689 Power line communication modern not requiring extra plug socket Mar. 15, 2005
6868120 Real-time system for measuring the Ricean K-factor Mar. 15, 2005
6868135 Method and apparatus for correcting for a phase shift between a transmitter and a receiver Mar. 15, 2005
6865221 Systems and methods for loop length and bridged tap length determination of a transmission line Mar. 8, 2005
6865222 Method and apparatus for testing a serial transmitter circuit Mar. 8, 2005
6859507 Method and apparatus for correcting a signal Feb. 22, 2005
6856802 Method and apparatus for measuring and optimising the quality of data transmission Feb. 15, 2005
6850735 System and method for signal classiciation of signals in a frequency band Feb. 1, 2005
6839383 Method and system for testing a digital subscriber line modem Jan. 4, 2005
6834077 System and method for testing a modem Dec. 21, 2004
6834078 Test facility for transceiver station Dec. 21, 2004
6834367 Built-in self test system and method for high speed clock and data recovery circuit Dec. 21, 2004
6825801 Outer loop test generator for global positioning system Nov. 30, 2004
6823020 Signaling output stage for generating digital voltage signals on a bus system Nov. 23, 2004
6819711 Communication channel quality indicator Nov. 16, 2004
6807226 Apparatus having communication function, method for grouping such apparatuses, and recording medium for use with such method Oct. 19, 2004
6807227 Method of reconfiguration of radio parameters for power-aware and adaptive communications Oct. 19, 2004
6807420 Mobile communication system, mobile station and diversity handover branch control method Oct. 19, 2004
6798830 Methods and apparatus for generating a test signal for xDSL devices Sep. 28, 2004
6798831 Testing system Sep. 28, 2004
6795491 Spread spectrum localizers Sep. 21, 2004
6784653 Eye monitor Aug. 31, 2004
6785516 Testing device for wireless transmission towers Aug. 31, 2004
6785523 Self-correlation detection in automatic gain calibration Aug. 31, 2004
6782043 Method and apparatus for estimating the length of a transmission line Aug. 24, 2004

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