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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:

Patent Number Title Of Patent Date Issued
8126670 Method and device for calibrating a network analyzer for measuring at differential connections Feb. 28, 2012
8126404 Method and device for evaluating the energy level of a radio signal Feb. 28, 2012
8126091 RDS/RBDS decoder with reliable values Feb. 28, 2012
8126081 Signal modulation apparatus, signal modulation method, and computer program product Feb. 28, 2012
8126040 Device and method for calibrating MIMO systems Feb. 28, 2012
8126039 Methods and apparatus for evaluating the eye margin of a communications device using a data eye monitor Feb. 28, 2012
8126038 System and method for selectable mask for LDSL Feb. 28, 2012
8121571 Method for second intercept point calibration based on opportunistic reception Feb. 21, 2012
8121181 Method for determining target type of control signals in multi-channel system Feb. 21, 2012
8116794 Channel impulse response extraction for mobile terminals Feb. 14, 2012
8112687 Systems and methods for mitigating impulse noise Feb. 7, 2012
8107511 Apparatus and method for intelligent frequency-hopping discovery and synchronization Jan. 31, 2012
8102903 Calibrating received signal measurements in a digital subscriber line device Jan. 24, 2012
8102817 Method of measurement reporting and cellular radio terminal Jan. 24, 2012
8099643 Minimizing slot wastage using overlapping HARQ regions in OFDMA WiMAX system Jan. 17, 2012
8099106 Method and apparatus for classifying user morphology for efficient use of cell phone system resources Jan. 17, 2012
8098766 Transceiver with switch circuit for routing data from receiver to transmitter Jan. 17, 2012
8098720 Method and apparatus for suppressing adjacent channel interference and multipath propagation signals and radio receiver using said apparatus Jan. 17, 2012
8094808 Unpowered twisted pair loopback circuit for differential mode signaling Jan. 10, 2012
8094705 Fast SERDES I/O characterization Jan. 10, 2012
8094704 Detecting wireless channel status from acoustic discrimination of spectral content Jan. 10, 2012
8094703 Systems and methods for loop length and bridged tap length determination of a transmission line Jan. 10, 2012
8090011 Measuring apparatus, measuring method, recording medium, and test apparatus Jan. 3, 2012
8090009 Test apparatus Jan. 3, 2012
RE43046 Maintenance system for a telecommunication installation Dec. 27, 2011
8085837 Characterizing non-compensable jitter in an electronic signal Dec. 27, 2011
8081704 Dynamic digital communication system control Dec. 20, 2011
8081674 Methods and system for determining a dominant impairment of an impaired communication channel Dec. 20, 2011
8073042 Recursive range controller Dec. 6, 2011
8073040 Serial communications control plane with optional features Dec. 6, 2011
8068553 System and method for evaluating performance of a MIMO antenna system Nov. 29, 2011
8068538 Jitter measuring apparatus, jitter measuring method and test apparatus Nov. 29, 2011
8064507 System and method for channel estimation Nov. 22, 2011
8064506 Signal generator and user interface for setting test sequences and parameters of a test signal Nov. 22, 2011
8059743 Method for transmitting signals in a wireless communication system and communication system Nov. 15, 2011
8054917 Method and apparatus for advanced inter-carrier interference cancellation in orthogonal frequency division multiplexing (OFDM) channels Nov. 8, 2011
8054893 Optimum radio communication method with radio frame variable control and radio communication system using the same Nov. 8, 2011
8045605 Jitter amplifier circuit, signal generation circuit, semiconductor chip, and test apparatus Oct. 25, 2011
8045604 Estimation of log-likelihood using constrained markov-chain monte carlo simulation Oct. 25, 2011
8042016 Method and device for efficiently retransmitting packets in wired/wireless network Oct. 18, 2011
8040941 Constellation-multiplexed transmitter and receiver Oct. 18, 2011
8040144 Interface circuit Oct. 18, 2011
8037371 Apparatus and method for testing high-speed serial transmitters and other devices Oct. 11, 2011
8027378 Circuits, architectures, apparatuses, systems, algorithms and methods and software for amplitude drop detection Sep. 27, 2011
8027376 Method and system for measuring IQ path mismatch Sep. 27, 2011
8027265 Providing a capability list of a predefined format in a communications network Sep. 27, 2011
8026728 Spectrum analyzers with dynamic range indicator and methods of use Sep. 27, 2011
8023558 Method and apparatus for measuring the input frequency response of a digital receiver Sep. 20, 2011
8019032 Method and system for channel equalization Sep. 13, 2011
8018990 Apparatus for measuring in-phase and quadrature (IQ) imbalance Sep. 13, 2011

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