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Class Information
Number: 375/240
Name: Pulse or digital communications > Bandwidth reduction or expansion
Description: Subject matter where the width of the frequency spectrum of a pulse or digital signal is either reduced or expanded.










Sub-classes under this class:

Class Number Class Name Patents
375/241 Pulse code modulation 172
375/240.01 Television or motion video signal 2,100


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
6859493 Apparatus and method for the recovery of compression constants in the encoded domain Feb. 22, 2005
6859496 Adaptively encoding multiple streams of video data in parallel for multiplexing onto a constant bit rate channel Feb. 22, 2005
6856650 Method and apparatus for second or later generation coding of video signal Feb. 15, 2005
6856651 System and method for incremental and continuous data compression Feb. 15, 2005
6848012 Method and system for an adaptive multimode media queue Jan. 25, 2005
6834081 Coding apparatus and method for orientation interpolator node Dec. 21, 2004
6834083 Data transmitting method and data transmitter Dec. 21, 2004
6831946 Device and method for coding image Dec. 14, 2004
6831949 Switching compressed video bitstreams Dec. 14, 2004
6829299 Variable length decoder and decoding method Dec. 7, 2004
6826227 Method intended for loss-free compression of signals of wide dynamic range with a view to their transmission Nov. 30, 2004
6823006 Adding fields of a video frame Nov. 23, 2004
6819714 Video encoding apparatus that adjusts code amount by skipping encoding of image data Nov. 16, 2004
6816553 Coding method for an image signal Nov. 9, 2004
6807230 Broadcast encoding system and method Oct. 19, 2004
6804192 OFDM/DMT digital communications system including partial sequence symbol processing Oct. 12, 2004
6804294 Method and apparatus for video frame selection for improved coding quality at low bit-rates Oct. 12, 2004
6804299 Methods and systems for reducing requantization-originated generational error in predictive video streams using motion compensation Oct. 12, 2004
6801571 Method and apparatus for optimizing data compression in a wireless digital access system Oct. 5, 2004
6801579 Method and wireless communication using unitary space-time signal constellations Oct. 5, 2004
6798838 System and method for improving video transmission over a wireless network Sep. 28, 2004
6795127 Video processing system and video processing method Sep. 21, 2004
6795492 Configurable exciter Sep. 21, 2004
6795497 Use of end to end compression devices in telecommunication networks Sep. 21, 2004
6795503 Video coding method and apparatus that predicts macroblock code length Sep. 21, 2004
6795865 Adaptively changing weights for fair scheduling in broadcast environments Sep. 21, 2004
6792057 Partial band reconstruction of frequency channelized filters Sep. 14, 2004
6788740 System and method for encoding and decoding enhancement layer data using base layer quantization data Sep. 7, 2004
6785331 Predictive encoding and decoding methods of video data Aug. 31, 2004
6782047 Variable length encoding of compressed data Aug. 24, 2004
6782048 Ultra-wideband communication through a wired network Aug. 24, 2004
6774937 Image processing system and camera system Aug. 10, 2004
6774952 Bandwidth management Aug. 10, 2004
6766147 Apparatus and method for implementing text based compression using cache and blank approach Jul. 20, 2004
6757326 Method and apparatus for implementing wavelet filters in a digital system Jun. 29, 2004
6757337 Coding-assisted MIMO joint detection and decoding Jun. 29, 2004
6754265 VOCODER capable modulator/demodulator Jun. 22, 2004
6754272 Picture signal processing method and apparatus, picture signal recording method and apparatus and recording medium Jun. 22, 2004
6754276 System stream creating apparatus which adjusts system clock reference based on total number of pictures to be stored and decoded during certain time period Jun. 22, 2004
6754392 Switching between decoded image channels Jun. 22, 2004
6751209 Header compression in real time service Jun. 15, 2004
6751257 Video decompressing system with efficient memory access capability Jun. 15, 2004
6744815 Method for synchronizing audio and video streams Jun. 1, 2004
6744816 Video coding and decoding methods Jun. 1, 2004
6741653 Data detection for codes with non-uniform spreading factors May. 25, 2004
6741666 Device and method for transforming a digital signal May. 25, 2004
6735249 Apparatus, and associated method, for forming a compressed motion vector field utilizing predictive motion coding May. 11, 2004
6731605 Prioritized optimal server side bandwidth allocation in a multimedia session with push and pull sources May. 4, 2004
6724832 Vestigial sideband generator particularly for digital television Apr. 20, 2004
6724842 Method for wireless differential communication using multiple transmitter antennas Apr. 20, 2004

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