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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:
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Patent Number Title Of Patent Date Issued
7221389 Automatic equalization of video signals May. 22, 2007
7216268 Method and arrangement to estimate transmission channel characteristics May. 8, 2007
7215703 Digital calculation received signal strength indication May. 8, 2007
7215702 Signal level detection apparatus and detection method, and signal level indication apparatus May. 8, 2007
7212496 Remote test unit May. 1, 2007
7206982 Diagnostic mechanism for an integrated circuit Apr. 17, 2007
7206339 Wonder generator, digital line tester comprising the same, and phase noise transfer characteristic analyzer Apr. 17, 2007
7203472 Method and apparatus providing calibration technique for RF performance tuning Apr. 10, 2007
7203460 Automated test of receiver sensitivity and receiver jitter tolerance of an integrated circuit Apr. 10, 2007
7200171 System and method for estimating initial channel quality in a multirate system Apr. 3, 2007
7200170 High speed I-O loopback testing with low speed DC test capability Apr. 3, 2007
7197067 Parameter selection in a communication system Mar. 27, 2007
7190718 Method and apparatus for determining a receiver sampling phase for use in diagnosing a channel Mar. 13, 2007
7184716 Low cost/low power analog transceiver architecture Feb. 27, 2007
7184711 Maintenance system for a telecommunication installation Feb. 27, 2007
7184469 Systems and methods for injection of test jitter in data bit-streams Feb. 27, 2007
7180937 Method for determining imbalance in a vector signal modulator Feb. 20, 2007
7167683 Bad frame indicator for radio telephone receivers Jan. 23, 2007
7162242 Method of system access to a wireless network Jan. 9, 2007
7162207 System, apparatus, method and computer program for producing signals for testing radio frequency communication devices Jan. 9, 2007
7158564 Device for generating a digitally modulated test signal Jan. 2, 2007
7158563 Dynamic digital communication system control Jan. 2, 2007
7154944 Mask compliance testing using bit error ratio measurements Dec. 26, 2006
7154943 Method and circuit of digital measurement of the phase of a sinusoidal signal Dec. 26, 2006
7154856 Multiplexing apparatus and cell discard method Dec. 26, 2006
7152025 Noise identification in a communication system Dec. 19, 2006
7149245 Link adaption in enhanced general packet radio service networks Dec. 12, 2006
7142619 Long subscriber loops using automatic gain control mid-span extender unit Nov. 28, 2006
7137061 Method and device for signaling a transmission fault on a data line Nov. 14, 2006
7137048 Method and apparatus for evaluating and optimizing a signaling system Nov. 14, 2006
7136428 Systems and techniques for measuring the performance of a communications system Nov. 14, 2006
7133446 Performance indicator for wireless digital signal reception Nov. 7, 2006
7130328 Time history display of orthogonal code power levels Oct. 31, 2006
7116777 Termination frame with modules and method Oct. 3, 2006
7114107 Method for the dynamic control of the channel use of a transmission channel and a load generator for sending a test sequence Sep. 26, 2006
7113749 System and method for measuring a high speed signal Sep. 26, 2006
7110469 Self-calibrating direct conversion transmitter Sep. 19, 2006
7110445 Oversampled clip-shaping Sep. 19, 2006
7106790 Method and apparatus for measuring a signal spectrum Sep. 12, 2006
7106791 Method and apparatus for monitoring transmission quality Sep. 12, 2006
7106834 Digital subscriber line diagnostic system Sep. 12, 2006
7103116 Detection of a false detection of a communication packet Sep. 5, 2006
7103276 Optical band scanning monitor system and method Sep. 5, 2006
7099278 Line loop back for very high speed application Aug. 29, 2006
7095781 Polyphase filter with stack shift capability Aug. 22, 2006
7088768 Data processing apparatus and data processing method Aug. 8, 2006
7085539 Communications channel characterization device and associated methods Aug. 1, 2006
7082159 Methods and arrangements in a telecommunications system Jul. 25, 2006
7075981 Dynamic quality of service monitor Jul. 11, 2006
7076009 Low power CDMA receiver Jul. 11, 2006

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