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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
6487185 Frame erasure for digital data transmission systems Nov. 26, 2002
6487245 Method for testing a radiocommunications network, corresponding device and base station Nov. 26, 2002
6480531 Method and apparatus of testing modems in a networking environment Nov. 12, 2002
6476615 Device for testing dynamic characteristics of components using serial transmissions Nov. 5, 2002
6473700 Apparatus for use in a logic analyzer for compressing digital data for waveform viewing Oct. 29, 2002
6466614 Method and apparatus for classifying a baseband signal Oct. 15, 2002
6463031 Rate determination technique that utilizes modified cumulative metrics to orthogonalize the rates Oct. 8, 2002
6459278 Method for characterizing delay of frequency translation devices Oct. 1, 2002
6456652 Method for optimizing forward link coverage in code division multiple access (CDMA) network Sep. 24, 2002
6456675 Diversity reception employing periodic testing Sep. 24, 2002
6452965 Fault detection circuit in loop network Sep. 17, 2002
6445732 Dynamic range reduction circuitry for a digital communications receiver Sep. 3, 2002
6445773 DMT test method for determining ADSL capability of cables Sep. 3, 2002
6438173 Multicarrier transmission system for irregular transmission of data blocks Aug. 20, 2002
6438357 Air interface simulator and method thereof Aug. 20, 2002
6434376 Slotted idle mode for dual mode subscriber stations Aug. 13, 2002
6418162 Frequency spectrum measurement apparatus Jul. 9, 2002
6404755 Multi-level information mapping system and method Jun. 11, 2002
6404808 Period determination of sampled pseudo-random binary sequence generated signals Jun. 11, 2002
6404822 Control of broadband voice and data communication over a low quality noisy transmission media Jun. 11, 2002
6404826 Iterative signal-to-interference ratio estimation for WCDMA Jun. 11, 2002
6400775 Method and a system for digitally linearizing an amplifier Jun. 4, 2002
6400779 Estimating CIR using correlation with line removal Jun. 4, 2002
6393053 Digital output unit May. 21, 2002
6389066 System and method for adaptive modification of modulated and coded schemes in a communication system May. 14, 2002
6384753 High density analog interface May. 7, 2002
6385236 Method and Circuit for testing devices with serial data links May. 7, 2002
6381269 Test system with signal injection network for characterizing interference and noise tolerance in a digital signal link Apr. 30, 2002
6377616 Calibration of n-port receivers Apr. 23, 2002
6377617 Real-time signal analyzer Apr. 23, 2002
6370189 Apparatus and methods for variable delay channel tracking Apr. 9, 2002
6366562 Monitor particularly suited for naval tactical data system interface type E Apr. 2, 2002
6362631 Method for characterizing delay of frequency translation devices Mar. 26, 2002
6363111 Control loop for adaptive multilevel detection of a data signal Mar. 26, 2002
6347217 Link quality reporting using frame erasure rates Feb. 12, 2002
6344749 Test system for measuring frequency response and dynamic range on cable plant Feb. 5, 2002
6343096 Clock pulse degradation detector Jan. 29, 2002
6341142 Serial data transceiver including elements which facilitate functional testing requiring access to only the serial data ports, and an associated test method Jan. 22, 2002
6310911 Method of detecting signal degradation fault conditions within SONET and SDH signals Oct. 30, 2001
6307879 Digital radio communication apparatus and method of controlling the same Oct. 23, 2001
6307882 Determining channel characteristics in a space-time architecture wireless communication system having multi-element antennas Oct. 23, 2001
6298084 Bad frame detector and turbo decoder Oct. 2, 2001
6295015 Reference generator for demodulator calibration Sep. 25, 2001
6285876 Test unit with programmable transmit timing for telecommunication systems Sep. 4, 2001
6285960 Method and apparatus for a router line card with adaptive selectable gain control Sep. 4, 2001
6282239 Method and apparatus for testing a communications line in a data processing system Aug. 28, 2001
6278729 Method and apparatus for testing a communications line in a data processing system Aug. 21, 2001
6278730 Non-invasive digital cable test system Aug. 21, 2001
6275522 Method for allocating data and power in a discrete, multi-tone communication system Aug. 14, 2001
6272353 Method and system for mobile communications Aug. 7, 2001

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