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Class Information
Number: 375/242
Name: Pulse or digital communications > Pulse code modulation
Description: Subject matter in which a signal to be transmitted is sampled or compared and then converted into a digital pulse train which represents the amplitude of the sampled signal at the instant of sampling or comparison, and this digital pulse train is transmitted so it may be reconverted into a duplicate of the original signal at a receiver.

Sub-classes under this class:

Class Number Class Name Patents
375/243 Correcting or reducing quantizing errors 226
375/244 Differential 254
375/253 Length coding 170
375/254 Noise or distortion reduction 404

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8705418 Methods and systems for detecting a preamble of a data packet in wireless communication systems Apr. 22, 2014
8705635 Method, medium, and system compressing and/or reconstructing image information with low complexity Apr. 22, 2014
8675781 Radio frequency receiver system for wideband signal processing Mar. 18, 2014
8665970 Method and arrangement related to blind detection Mar. 4, 2014
8660172 Pulse signal receiving apparatus and transmission system Feb. 25, 2014
8660195 Using quantized prediction memory during fast recovery coding Feb. 25, 2014
8630356 High performance loop filters in video compression Jan. 14, 2014
8625661 Pulse edge modulation Jan. 7, 2014
8619882 Data modulation circuit Dec. 31, 2013
8621307 Soft decision threshold control in a signal receiver using soft decision error correction Dec. 31, 2013
8615045 Apparatus and method for playout scheduling in voice over internet protocol (VoIP) system Dec. 24, 2013
8612837 BM/LLR computations for multi-dimensional TCM/BCM codes Dec. 17, 2013
8593932 Efficient signal transmission methods and apparatus using a shared transmission resource Nov. 26, 2013
8576927 Encoding method, encoding device, decoding method, decoding device, program, and recording medium Nov. 5, 2013
8571030 System and method for computing cost metrics for wireless network links Oct. 29, 2013
8571096 Ultra-wideband communication system for very high data rates Oct. 29, 2013
8553785 Apparatus and method for transmitting and recovering encoded data streams across physical medium attachments Oct. 8, 2013
8553784 Method, apparatus and system for random linear network coding Oct. 8, 2013
8542752 Hierarchical coding for multicast messages Sep. 24, 2013
8543388 Efficient speech stream conversion Sep. 24, 2013
8532982 Method and apparatus to encode and decode an audio/speech signal Sep. 10, 2013
8514950 Communication apparatus, relay method thereof, and computer-readable storage medium Aug. 20, 2013
8503576 Mirror signal IQ-imbalance correction Aug. 6, 2013
8498343 System for MIMO equalization of multi-channel transceivers with precoding Jul. 30, 2013
8498658 Techniques and systems for providing data over power in communications based on time reversal Jul. 30, 2013
8495354 Apparatus for determining during a power-on sequence, a value to be written to a first register in a secure area and the same value to a second register in non-secure area, which during a prot Jul. 23, 2013
8483333 Methods for adjusting system clock in terms of operational status of non-baseband module, methods for peripheral device control adjustment, and electronic devices using the same Jul. 9, 2013
8467689 Parallel-serial converter for optical transmission, optical transmission system, and electronic apparatus Jun. 18, 2013
8436754 Encoding and decoding method and device May. 7, 2013
8427242 Ultra wideband on-chip pulse generator Apr. 23, 2013
8428153 Signal and devices for wired networks Apr. 23, 2013
8428195 Methods and apparatus for detecting and decoding adaptive equalization training frames Apr. 23, 2013
8406314 Two-dimensional DPCM with PCM escape mode Mar. 26, 2013
8390500 Asynchronous pulse processing apparatus and method providing signal reverberation Mar. 5, 2013
8391373 Concealment of transmission error in a digital audio signal in a hierarchical decoding structure Mar. 5, 2013
8358707 Apparatus and method for ultra wide band communication based on multi-coded bi-orthogonal pulse position modulation Jan. 22, 2013
8345741 Receiving apparatus and receiving method for reducing a waiting period upon switching a program Jan. 1, 2013
8340445 Image encoding device, image encoding method, image encoding/decoding system Dec. 25, 2012
8327244 BM/LLR computations for multi-dimensional TCM/BCM codes Dec. 4, 2012
8320494 Method and apparatus for generating reference voltage to adjust for attenuation Nov. 27, 2012
8315272 Systems and methods for digital interface translation Nov. 20, 2012
8315348 Clock extraction circuit for use in a linearly expandable broadcast router Nov. 20, 2012
8311413 High power efficiency optical-wireless transmitter Nov. 13, 2012
8300711 Adaptive differential pulse code modulation/demodulation system and method Oct. 30, 2012
8290099 Phase noise limiting apparatus, phase noise limiting method, receiving apparatus, receiving method, and programs Oct. 16, 2012
8279947 Method, apparatus and system for multiple-description coding and decoding Oct. 2, 2012
8270534 Method and apparatus for signal quality estimation Sep. 18, 2012
8265173 Method for compression and expansion of analogue signals Sep. 11, 2012
8254470 Encoding and decoding of embedded data stream in analog video using copy protection pulses Aug. 28, 2012
8234536 Iterative decoder using input data pipelining and time-interleaved processing Jul. 31, 2012

1 2 3 4 5 6 7 8 9 10 11 12

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