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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
7480840 Apparatus, system, and method for facilitating port testing of a multi-port host adapter Jan. 20, 2009
7480353 Method and apparatus for estimating channel response and receiver apparatus using the estimated channel response for OFDM radio communication systems Jan. 20, 2009
7480328 Signal generator with display unit Jan. 20, 2009
7477685 Method and systems for analyzing the quality of high-speed signals Jan. 13, 2009
7477684 Testing method, communication device, and testing system Jan. 13, 2009
7466748 Electronic measuring device for detecting a process variable, in particular a radar or ultrasonic filling level measuring device, and a method for operating a measuring device of this type Dec. 16, 2008
7466140 Signal generation circuit, jitter injection circuit, semiconductor chip and test apparatus Dec. 16, 2008
7463702 System and method for one-pass blind transport format detection Dec. 9, 2008
7460840 Method of test characterization of an analog front end receiver in a communication system Dec. 2, 2008
7460592 Apparatus for measuring jitter and method of measuring jitter Dec. 2, 2008
7460591 Method and apparatus using re-sampled tie records to characterize jitter in a digital signal Dec. 2, 2008
7460590 Handheld communication tester and method for testing direct serial communication capability of an intelligent electronic device in a power system Dec. 2, 2008
7460589 Eye monitoring and reconstruction using CDR and sub-sampling ADC Dec. 2, 2008
7460585 Methods and systems for detecting defects in serial link transceivers Dec. 2, 2008
7457383 Receiving LSI device and receiver using the same Nov. 25, 2008
7457373 Receiver circuit for a push-pull transmission method and method for receiver-end signal processing in push-pull transmission methods Nov. 25, 2008
7457354 Method and device of analyzing a signal transmitted via a communication link Nov. 25, 2008
7453932 Test device and setting method Nov. 18, 2008
7453931 Method for measuring the modulation error of digitally modulated high frequency signals Nov. 18, 2008
7453927 Method and apparatus to compensate AM-PM delay mismatch in envelope restoration transmitter Nov. 18, 2008
7450633 Wander generator, and digital line tester and phase noise transfer characteristic analyzer using the same Nov. 11, 2008
7444558 Programmable measurement mode for a serial point to point link Oct. 28, 2008
7440524 Channel estimation in a wireless transmission system Oct. 21, 2008
7430236 Communication interface for a path measuring device Sep. 30, 2008
7428270 Method and system for detecting and classifying the modulation of unknown analog and digital telecommunications signals Sep. 23, 2008
7424051 Pad and CODEC detection Sep. 9, 2008
7421016 Method and apparatus for testing wireless communication channels Sep. 2, 2008
7418054 Transmitter adjustment based on transmission statistics Aug. 26, 2008
7418032 Altering power consumption in communication links based on measured noise Aug. 26, 2008
7412341 Jitter amplifier, jitter amplification method, electronic device, testing apparatus, and testing method Aug. 12, 2008
7411999 Method for selecting and extracting an eye diagram opening for subsequent processing Aug. 12, 2008
7400673 Method of determining and displaying powers of code channels and analysis device Jul. 15, 2008
7400671 Periodic calibration for communication channels by drift tracking Jul. 15, 2008
7400670 Periodic calibration for communication channels by drift tracking Jul. 15, 2008
7397865 Systems and methods of using IQ modulation for calibration or measurement Jul. 8, 2008
7397847 Testing device for testing electronic device and testing method thereof Jul. 8, 2008
7394880 Method and apparatus for simulating radio channel Jul. 1, 2008
7394773 Network bridge uplink port identification Jul. 1, 2008
7389192 Determining data signal jitter via asynchronous sampling Jun. 17, 2008
7388906 Method for detecting bridged taps on telephony cable Jun. 17, 2008
7386041 Method for normalization of an eye diagram and selection of sampling parameters for a receiver Jun. 10, 2008
7386039 Method and apparatus for identifying faults in a broadband network Jun. 10, 2008
7382825 Method and apparatus for integrated channel characterization Jun. 3, 2008
7382824 Method and apparatus for accurate modeling of multi-domain clock interfaces Jun. 3, 2008
7379493 Signal analyzer for detecting distortions in signals May. 27, 2008
7373117 Power control in telecommunications networks May. 13, 2008
7369605 Method and device for injecting a differential current noise signal into a paired wire communication link May. 6, 2008
7369604 Time correlation of data acquisition samples from independent systems in a logic analyzer May. 6, 2008
7366233 Assembly for measurement demodulation and modulation error detection of a digitally modulated receive signal Apr. 29, 2008
7362836 Method for selecting optimum sampling parameters for a plurality of data receivers having at least one sampling parameter in common Apr. 22, 2008

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