| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 01/28/1998 | EP0821224A2 Optical power meter for detecting loss factors in fiber optic communications |
| 01/28/1998 | CN1171669A Digital multiplexing telophone channels over power transmission line and integrated information transmission system |
| 01/28/1998 | CN1171668A Far-end monitor |
| 01/27/1998 | US5712614 Power line communications system |
| 01/27/1998 | CA2081923C Method and arrangement of estimating data sequences transmitted using viterbi algorithm |
| 01/22/1998 | WO1998002979A1 Multi-channel transcoder rate adapter having low delay and integral echo cancellation |
| 01/21/1998 | EP0820171A1 Multicarrier transmitter or receiver with phase rotators |
| 01/21/1998 | EP0820168A2 Multimode modem, and protocols therefor |
| 01/21/1998 | EP0820161A2 Optical interference measurement method and system |
| 01/21/1998 | EP0820158A1 Carrier vehicle with equipment for mutual communication |
| 01/21/1998 | CN1171003A Apparatus and method of compensating signal attenuation on telephone line |
| 01/20/1998 | US5710799 Cross polarization interference canceler and cross polarization interference eliminating apparatus using the same |
| 01/20/1998 | US5710794 Initial phase-loading circuit for a fractionally-spaced linear equalizer |
| 01/20/1998 | US5710790 Communication arrangement with improved echo and noise suppression in a channel containing quantization |
| 01/20/1998 | US5709598 Abrasive tape and method of producing the same |
| 01/20/1998 | CA2013797C Fast training echo canceller |
| 01/15/1998 | WO1998001962A1 Low-noise, high rms switching power supply for broadband signal distribution system |
| 01/15/1998 | WO1998001961A2 Frequency domain signal reconstruction in sampled digital communications systems |
| 01/15/1998 | WO1998001945A1 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems |
| 01/15/1998 | WO1998001859A2 Transmission, recording and reproduction of a digital information signal |
| 01/15/1998 | CA2259609A1 Frequency domain signal reconstruction in sampled digital communications systems |
| 01/15/1998 | CA2259161A1 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems |
| 01/14/1998 | EP0818895A2 Optically amplifying transmission system |
| 01/14/1998 | EP0818083A1 Method of generating a.c. information for a bus system, and transmission unit for carrying out the method |
| 01/13/1998 | US5708704 Speech recognition method and system with improved voice-activated prompt interrupt capability |
| 01/13/1998 | US5708703 Wide range equalizer with line length detection |
| 01/13/1998 | US5708701 Power line telephone communications system having on hook digital voiceband messaging |
| 01/08/1998 | WO1998000960A1 Echo canceller system |
| 01/08/1998 | DE19725710A1 Power and data transmission method e.g. for fire shutter |
| 01/08/1998 | DE19648382C1 Signal transmission method |
| 01/08/1998 | DE19624928A1 Far-end crosstalk compensation method using predistortion by adaptive filter |
| 01/08/1998 | CA2258778A1 Echo canceller system |
| 01/07/1998 | EP0817399A2 Polling in a mains metering system |
| 01/07/1998 | EP0817398A2 Intelligent near-end speech detection |
| 01/07/1998 | EP0815509A1 Method and apparatus for data encoding and communication over noisy media |
| 01/07/1998 | EP0784448A4 Signal processing apparatus |
| 01/07/1998 | CN1169627A 缆线通信系统和方法 Cable communication system and method |
| 01/06/1998 | US5706277 Method for changing-over to standby for a transmission device for the bidirectional transmission of digital signals and arrangement for carrying out the method |
| 01/06/1998 | US5705974 Power line communications system and coupling circuit for power line communications system |
| 12/31/1997 | WO1997050203A1 Optical transmission systems using optical amplifiers and wavelength division multiplexing |
| 12/31/1997 | WO1997050193A1 Power line communications system |
| 12/31/1997 | WO1997050192A1 Remote control apparatus for power line communications system |
| 12/31/1997 | WO1997050190A1 System and coupling circuit for power line communications |
| 12/31/1997 | WO1997050186A2 System and method for adaptive interference cancelling |
| 12/31/1997 | CN1169077A Apparatus and method for providing telephone user with control of threshold volume at which user's voice will take control of half-duplex speakerphone conversation |
| 12/31/1997 | CN1169074A Line equalizer control method, and integrating circuit, frequency shift circuit and transmission device |
| 12/31/1997 | CN1169073A Receiver |
| 12/30/1997 | US5703904 Impulse noise effect reduction |
| 12/30/1997 | US5703883 Expandable repeater controller |
| 12/29/1997 | EP0814579A2 Double ring-type local area network system capable of switching transmission paths without interruption |
| 12/29/1997 | EP0814574A2 Circuitry for far end crosstalk compensation |
| 12/24/1997 | WO1997049212A2 Apparatus and method of determining symbol rate and a carrier frequency |
| 12/24/1997 | WO1997049196A2 Echo suppressor and non-linear processor of echo canceller |
| 12/24/1997 | CN1168624A Signal processing apparatus |
| 12/24/1997 | CN1168587A Line arrangement using for line matching and echo suppressing |
| 12/24/1997 | CN1168586A Coupled line arrangement used for analog transmission route and digital transmission |
| 12/23/1997 | US5701330 Serial communication method and apparatus |
| 12/23/1997 | CA2088558C Multi-channel echo cancellation with adaptive filters having selectable coefficient vectors |
| 12/17/1997 | EP0813349A2 Optical transmission system |
| 12/17/1997 | EP0813331A2 Apparatus and method for providing a telephone user with control of the threshold volume at which the user's voice will take control of a half-duplex speakerphone conversation |
| 12/17/1997 | CN1168036A Contactor corresponding to network |
| 12/16/1997 | US5699484 Method and apparatus for applying linear prediction to critical band subbands of split-band perceptual coding systems |
| 12/16/1997 | US5699424 System identification method and apparatus by adaptive filter |
| 12/16/1997 | US5699423 Telephone set in which an echo signal is effectively cancelled in spite of being provided with a plurality of sound producing units |
| 12/16/1997 | US5699022 Adaptive cable equalizer |
| 12/16/1997 | US5698985 Cross-talk measurement instrument with source indication as a function of distance |
| 12/11/1997 | WO1997047093A1 Apparatus for automatic sensing of line amplifier configuration for status monitoring |
| 12/11/1997 | WO1997047092A1 Non-linear reciprocating device |
| 12/11/1997 | WO1997047084A1 Method and apparatus for performing bandedge equalization |
| 12/11/1997 | CA2207529A1 Apparatus and method for providing a telephone user with control of the threshold volume at which the user's voice will take control of a half-duplex speakerphone conversation |
| 12/10/1997 | EP0811301A1 Apparatus and method for adaptively precompensating for loudspeaker distortions |
| 12/10/1997 | EP0811288A1 Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones |
| 12/10/1997 | EP0811276A1 Process and circuit arrangement for connecting a load to a conductor |
| 12/09/1997 | US5696819 Speech communication apparatus |
| 12/09/1997 | US5696769 Decision error correcting method of a digital communication system and the digital communication system for the same |
| 12/09/1997 | CA2112020C Adaptive equalizer |
| 12/04/1997 | WO1997045995A1 Arrangement for suppressing an interfering component of an input signal |
| 12/03/1997 | EP0810760A1 Demodulator |
| 12/03/1997 | EP0810699A2 Optical repeaters for single-and multi-wavelength operation with dispersion equalization |
| 12/03/1997 | EP0809893A1 Echo canceller having kalman filter for optimal adaptation |
| 12/03/1997 | EP0809883A1 Distortion correction device for a path of propagation in transmission systems |
| 12/03/1997 | EP0725995B1 Remote power supply unit |
| 12/03/1997 | EP0605549B1 Handsfree telephone apparatus |
| 12/02/1997 | US5694474 Adaptive filter for signal processing and method therefor |
| 12/02/1997 | US5694436 Gain control system for handling periodic noises |
| 12/02/1997 | US5694422 Fixed equalizer and equalizing method |
| 12/02/1997 | US5694421 For use in a transmission system |
| 12/02/1997 | US5694108 Apparatus and methods for power network coupling |
| 12/02/1997 | US5694081 Signal conditioning apparatus |
| 11/26/1997 | EP0809403A2 Shared hybrid fiber-coax network having reduced ingress noise |
| 11/26/1997 | EP0808530A2 Bi-directional signal transmission system |
| 11/26/1997 | EP0653115B1 Polarity reversing dc power supply for remotely located equipment |
| 11/26/1997 | CN2269028Y Modules for testing telephone |
| 11/26/1997 | CN1166070A Method and filter for isolating upstream ingress noise in bi-directional cable system |
| 11/25/1997 | US5692020 Signal processing apparatus and method |
| 11/25/1997 | US5692011 Dual decision equalization apparatus |
| 11/25/1997 | US5691715 Method and apparatus for detecting fraudulent power line communications signal |
| 11/25/1997 | US5691691 Power-line communication system using pulse transmission on the AC line |
| 11/25/1997 | US5690321 Vibration damping system for vehicle |
| 11/25/1997 | CA2128609C Modem including an equalizer for amplitude jitter |