Patents
Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
01/1994
01/18/1994US5280472 CDMA microcellular telephone system and distributed antenna system therefor
01/18/1994CA1326308C Subsignal transmitting system
01/12/1994EP0578313A1 Concatenated coding for OFDM transmission
01/11/1994US5278871 Method and apparatus for estimating signal weighting parameters in a receiver
01/11/1994US5278867 Receiver system for processing signals received on diversity channels
01/11/1994US5278866 Radio communication apparatus with stored coding/decoding procedures
01/11/1994US5278844 Method and apparatus for digital audio broadcasting and reception
01/11/1994US5278823 For testing telecommunication networks coupled to one another
01/11/1994CA2024742C Speech coding apparatus using multimode coding
01/06/1994WO1994000938A1 A method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
01/06/1994WO1994000937A1 Message in packet form with header constituted by routing information and a crc check sequence
01/06/1994WO1994000915A1 Bit error counter and its counting method, and signal identifying device and its identifying method
01/06/1994CA2115445A1 Device for and method of continuing bit errors and device for and method of identifying signals
01/06/1994CA2114715A1 A method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
01/05/1994EP0577301A1 Digital receive line filter circuit with data operated squelch
01/05/1994EP0576919A1 Method and apparatus for regenerating a binary signal
01/04/1994US5276841 Audio/video data reproducing apparatus which generates end of data transfer signal and which transfers data after communication error without resetting address data
12/1993
12/30/1993CA2099302A1 Method and apparatus for sample-data receiver squelch
12/29/1993EP0576136A2 Error recovery method in a system constituted by nodes connected by lienks which transfer error control fames
12/29/1993EP0575422A1 Error burst detection.
12/28/1993US5274838 Fail-soft architecture for public trunking system
12/28/1993US5274837 Trunked radio repeater system with multigroup calling feature
12/28/1993US5274674 Method of controlling a threshold decoder for a signal having several levels and being affected by echoes, and television receiver provided with such a decoder
12/28/1993US5274668 Integrated circuit demodulator component
12/28/1993US5274667 Adaptive data rate packet communications system
12/28/1993US5274629 Method for the broadcasting of digital data, notably for radio broadcasting at high bit rate towards mobile receivers, with time-frequency interlacing and coherent demodulation
12/23/1993WO1993025955A1 Portable data processor which selectively activates and deactivates internal modular units and application processor to conserve power
12/23/1993CA2137831A1 Portable data processor which selectively activates and deactivates internal modular units and application processor to conserve power
12/22/1993EP0575058A1 Digital jitter correction method and signal preconditioner
12/22/1993EP0574523A1 Variable bit rate speech encoder
12/22/1993CN1023281C Channel switching system
12/15/1993EP0573567A1 Hand-held data capture system with interchangeable modules and interactive control circuits
12/14/1993US5271035 Repeater supervision
12/14/1993US5271011 Digital audio data muting system and method
12/14/1993US5271001 Synchronous terminal station system
12/08/1993EP0573116A1 Transmission system with a decoder with bit error rate estimation and/or word synchronisation
12/08/1993EP0572859A1 Method and device for automatic gain control in a space/angle diversity digital radio receiver
12/08/1993EP0572858A1 Method for minimizing the the IF-estimated bit error rate function in a space/angle diversity digital radio receiver
12/07/1993US5268938 Redundancy scheme for Fourier transform coding on peak limited channels
12/07/1993CA1325045C Data communication system having means for switching between main and stand-by apparatuses
12/01/1993EP0572206A2 Coding method for correction and detection of skewed transitions in parallel asynchronous communication systems
12/01/1993EP0572171A1 Method and apparatus for providing time diversity for multipath fading channels
12/01/1993EP0536334A4 System and method for generating signal waveforms in a cdma cellular telephone system
11/1993
11/30/1993US5266945 Paging system with energy efficient station location
11/28/1993CA2097144A1 Non-interruption transmission line switching system in a duplex transmission network
11/24/1993EP0570648A1 Apparatus for generating and checking the error correction codes of messages in a message switching system
11/24/1993EP0344169B1 Transmission system
11/23/1993US5265270 Method and apparatus for providing power conservation in a communication system
11/23/1993US5265151 Method of improving modem performance by controlling transmitted power of modem, and modem implementing the same
11/23/1993US5265122 In a communication system
11/23/1993US5265103 Data communications system
11/23/1993US5265093 Hardware interface and protocol for a mobile radio transceiver
11/18/1993EP0570322A1 Power-saving, full duplex nodal communications systems
11/18/1993EP0570220A2 Acknowledgment protocol for serial data network with out-of-order delivery
11/18/1993EP0553289A4 Digital audio broadcasting system
11/16/1993US5261757 Shaft mount for data coupler system
11/10/1993EP0569280A1 Method and system for transmission of a digital signal coded with N bits by an emitting and receiving interface for signal coded with N+M bits and utilisation in digital television
11/10/1993EP0568804A2 Communication control apparatus
11/10/1993EP0568550A1 Method of controlling a switching device.
11/09/1993US5260975 Digital demodulator
11/09/1993US5260951 Digital data communication system
11/09/1993US5260939 Speech transmission method using speech frame interpolation
11/09/1993US5260936 HDLC store and forward apparatus
11/09/1993US5260933 Acknowledgement protocol for serial data network with out-of-order delivery
11/09/1993US5260819 Digital telemetry system and method for fault detection in optical transmission system
11/09/1993US5260700 Enhanced throughput in simulcast communication systems
11/09/1993CA2015401C Multi-length packet format including check sequence(s)
11/09/1993CA1324218C Zero string error detection circuit
11/03/1993EP0568520A2 Regenerative communication channel extender
11/03/1993EP0567799A1 Apparatus for data reception
11/03/1993EP0567763A1 Method and apparatus for regenerating a ternary signal
11/02/1993US5259030 Antijam improvement method and apparatus
11/02/1993US5258999 Circuit and method for receiving and transmitting control and status information
10/1993
10/31/1993CA2095177A1 Regenerative communication channel extender
10/28/1993WO1993021710A1 Coordinated coding for digital transmission
10/28/1993WO1993021709A1 Multiple access coding for radio communications
10/28/1993WO1993020705A1 Process and apparatus for manufacturing shaped confectionery products
10/28/1993CA2117999A1 Process and apparatus for manufacturing shaped confectionery products
10/27/1993CN1077830A Forward floating reference type decision device
10/26/1993US5257401 Method of maintaining an established connection in a mobile radio system comprising both analog and digital radio channels
10/21/1993DE4212742A1 Error identification on data bus lines - has feedback lines from bus to microprocessor to compare voltage levels with reference values for fault identification
10/20/1993EP0566241A2 Errorless line protection switching in asynchronous transfer mode (ATM) communications systems
10/20/1993EP0565652A1 Peak to average power ratio reduction methodology for qam communications systems
10/19/1993US5255343 Method for detecting and masking bad frames in coded speech signals
10/19/1993US5255339 Analyzing and coding input speech
10/19/1993US5255268 Data distribution network with improved broadcast feature
10/19/1993US5255127 Digital modulated signal demodulator/decoder apparatus
10/19/1993CA1323456C Transmission error protection for tdma digital channels
10/14/1993WO1993020632A1 Buffer allocation to repeated information blocks in data transmission, particularly video transmission
10/13/1993EP0565506A2 Multiple access coding for radio communication
10/13/1993EP0565470A1 Method for transmission of digital radio-paging messages and radio-pager therefor
10/12/1993US5253273 ISDN "S" signal detection and display apparatus
10/06/1993EP0564283A2 Miller-squared decoder with erasure flag output
10/06/1993EP0563492A2 Data distribution network with improved broadcast feature
10/06/1993CN1077070A Error detection system
10/06/1993CN1077069A Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system
10/05/1993US5251237 Receiver for a digital transmission system
10/05/1993US5251217 Time-division multiplex information transmission system having a variable structure
10/05/1993US5251215 Modifying check codes in data packet transmission
10/05/1993US5250943 GVT-NET--A Global Virtual Time Calculation Apparatus for Multi-Stage Networks