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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
7720644 Method and apparatus of spectral estimation May. 18, 2010
7720137 Characterization of a frequency response for a frequency translation device May. 18, 2010
7706845 System and method of determining standby time for a mobile station Apr. 27, 2010
7706453 Iterative channel prediction Apr. 27, 2010
7702008 Method for determing crosstalk coupling and crosstalk determining unit for integration in digital data transmission systems Apr. 20, 2010
7701867 Method and apparatus for performing diagnostic tests using an assisting transceiver Apr. 20, 2010
7693223 Testing methods of a semiconductor integrated incorporating a high-frequency receiving circuit and a demodulation circuit Apr. 6, 2010
7680493 Low phase noise testing system utilizing a crystal filter Mar. 16, 2010
7675966 On-chip detection and measurement of data lock in a high-speed serial data link Mar. 9, 2010
7672401 System and method for data communication over multi-input, multi-output channels Mar. 2, 2010
7672366 Line quality report accuracy measurement device and accuracy measurement method Mar. 2, 2010
7672363 Method of and system for determining the delay of digital signals Mar. 2, 2010
7668234 Test signal generating apparatus for communications equipment and test signal generating method for communications equipment Feb. 23, 2010
7668233 Method of determining jitter and apparatus for determining jitter Feb. 23, 2010
7660349 Transmit equalizer compensation for probe receivers Feb. 9, 2010
7660343 Method for optimizing the transmission of data via lines Feb. 9, 2010
7657799 Method and apparatus for testing a dual mode interface Feb. 2, 2010
7657418 Modern testing system and method Feb. 2, 2010
7653146 System and method for delivery of video, content on demand and IP packets Jan. 26, 2010
7653124 Monitoring differential phase-shifted keying demodulation Jan. 26, 2010
7650540 Detecting and differentiating SATA loopback modes Jan. 19, 2010
7649441 Method and system for tuning an RFID interrogator Jan. 19, 2010
RE41070 Method for setting a transmission quality target value for power control in a mobile radiocommunication system Jan. 5, 2010
7643546 Method and apparatus for monitoring transmission quality Jan. 5, 2010
7643545 Calibrating automatic test equipment to account for magnitude and phase offsets Jan. 5, 2010
7640463 On-chip receiver eye finder circuit for high-speed serial link Dec. 29, 2009
7636396 Method of testing remote power line carrier pick-up coil Dec. 22, 2009
7636388 Channel fault detection for channel diagnostic systems Dec. 22, 2009
7636387 Measuring apparatus and measuring method Dec. 22, 2009
7636051 Status monitor apparatus Dec. 22, 2009
7634239 Generator for agile frequency signals Dec. 15, 2009
7627028 Multi-port S-parameter and T-parameter conversion Dec. 1, 2009
7627027 Method for measuring locking time and frequency error in RF receiver Dec. 1, 2009
7627026 Threshold setting using piecewise linear approximation for channel diagnostic systems Dec. 1, 2009
7627025 Echo canceller gain control for channel diagnostic systems Dec. 1, 2009
7623568 System and method for testing a modem Nov. 24, 2009
7623157 Polarity correction circuit and system incorporating same Nov. 24, 2009
7620076 System and method for variably inserting training symbols into transmissions by estimating the channel coherence time in a wireless communication network Nov. 17, 2009
7616927 Method and apparatus to reduce multipath effects on radio link control measurements Nov. 10, 2009
7616711 Frequency domain filtering to improve channel estimation in multicarrier systems Nov. 10, 2009
7613252 Installation of digital data receivers Nov. 3, 2009
7609781 Wireless communication device with self calibration feature for controlling power output Oct. 27, 2009
7606487 Distortion measurement in optical communication systems Oct. 20, 2009
7606341 Circuit for bit alignment in high speed multichannel data transmission Oct. 20, 2009
7606335 Signal pulse detection scheme for use in real-time spectrum analysis Oct. 20, 2009
7606298 Method of testing remote power line carrier pick-up coil Oct. 20, 2009
7606297 Method and system for creating an eye diagram using a binary data bit decision mechanism Oct. 20, 2009
7602859 Calibrating integrating receivers for source synchronous protocol Oct. 13, 2009
7599453 Doppler spread estimation for OFDM systems Oct. 6, 2009
7596461 Measurement of air quality in wireless networks Sep. 29, 2009

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