Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication
More topics under "H04L - Transmission of digital information, e.g. telegraphic communication" (1,208,511)
H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
H04L 12 - Data switching networks (448,999)
H04L 13 - Details of the apparatus or circuits covered by groups or (1,941)
H04L 15 - Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. morse code (160)
H04L 17 - Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. baudot code (677)
H04L 19 - Apparatus or local circuits for step-by-step systems (9)
H04L 21 - Apparatus or local circuits for mosaic printer telegraph systems (101)
H04L 23 - Apparatus or local circuits for systems other than those covered by groups (1,371)
H04L 25 - Baseband systems (55,083)
H04L 27 - Modulated-carrier systems (89,721)
H04L 29 - Arrangements, apparatus, circuits or systems, not covered by a single one of groups (330,333)
H04L 5 - Arrangements affording multiple use of the transmission path (28,368)
H04L 7 - Arrangements for synchronising receiver with transmitter (36,432)
H04L 9 - Arrangements for secret or secure communication (111,914)
Patents for H04L - Transmission of digital information, e.g. telegraphic communication (4,618)
03/2000
03/09/2000WO2000013363A1 Codec mode decoding using a priori knowledge
02/2000
02/24/2000WO2000010279A2 Transaction recognition and prediction using regular expressions
02/24/2000WO2000002335A3 Source adaptive digital subscriber line and method
02/24/2000CA2339848A1 Transaction recognition and prediction using regular expressions
02/16/2000EP0980162A1 Method and apparatus for seamlessly changing the radio interface data rate in circuit switched transmission
02/16/2000CN1244983A High-data-rate supplemental channel for CDMA telecommunications system
02/10/2000WO2000007355A2 Secure message management system
02/10/2000CA2338530A1 Secure message management system
02/03/2000WO1999065177A3 Residential users' connectivity modality to internet without using telephone lines
01/2000
01/20/2000WO1999055036A3 Methods and apparatuses for allocating time slots to circuit-switched channels
01/13/2000WO2000002335A2 Source adaptive digital subscriber line and method
01/11/2000US6014084 Electronic self-locating system and method
01/05/2000EP0969684A1 Method of providing service and data rate negotiation in a mobile communication system
01/05/2000EP0969683A1 Method of providing service and data rate negotiation in a mobile communication system
12/1999
12/29/1999WO1999067913A1 Digital data decoder that derives codeword estimates from soft data
12/21/1999US6005873 Apparatus and method for concurrent voice and data transmission
12/16/1999WO1999065177A2 Residential users' connectivity modality to internet without using telephone lines
12/14/1999US6003087 CGI response differencing communication system
12/07/1999US5999097 Electrical lead and financial terminal including the lead
12/02/1999WO1999062210A2 Secure token device access to services provided by an internet service provider (isp)
11/1999
11/25/1999WO1999050988A3 A method of relaying digital video and audio data via a communication media
11/24/1999EP0958682A1 Secure packet radio network
11/24/1999EP0958658A2 An information coding method and devices utilizing error correction and error detection
11/24/1999CN1236512A A digital communication system having an automatically selectable transmission rate
11/24/1999CN1236246A Data transfer method
11/17/1999EP0956672A2 High-data-rate supplemental channel for cdma telecommunications system
11/16/1999US5987519 Telemedicine system using voice video and data encapsulation and de-encapsulation for communicating medical information between central monitoring stations and remote patient monitoring stations
11/02/1999US5978371 Communications module base repeater
11/02/1999CA2168851C System and method for quantum cryptography
10/1999
10/21/1999WO1999045671A3 System for editing entertainment information by producers
10/21/1999WO1999019988B1 Method and system for network access over a low bandwidth link
10/20/1999CN1232215A Network-access management system and method, and computer program product
10/14/1999WO1999045656A3 A differential line driver
10/13/1999EP0948850A1 A digital communications system having an automatically selectable transmission rate
10/07/1999WO1999050988A2 A method of relaying digital video and audio data via a communication media
10/07/1999CA2324620A1 A method of relaying digital video and audio data via a communication media
10/06/1999EP0947056A1 Method for transmission of data packets
09/1999
09/10/1999WO1999045671A2 System for editing entertainment information by producers
09/10/1999WO1999045656A2 A differential line driver
09/10/1999WO1999019988A3 Method and system for network access over a low bandwidth link
09/10/1999CA2322896A1 System for editing entertainment information by producers
09/07/1999US5949814 High-data-rate supplemental channel for CDMA telecommunications system
09/04/1999CA2264428A1 Connection route switching device and method, node and connection route switching system
08/1999
08/24/1999US5943361 In a spread spectrum communication system
06/1999
06/30/1999EP0926591A2 Network-access management system and method
06/29/1999US5917837 Method and apparatus for performing decoding of codes with the use of side information associated with the encoded data
06/22/1999US5915090 Apparatus for transmitting a distributed computing application on a broadcast television system
06/22/1999US5914959 Digital communications system having an automatically selectable transmission rate
04/1999
04/22/1999WO1999019988A2 Method and system for network access over a low bandwidth link
04/22/1999CA2306411A1 Method and system for network access over a low bandwidth link
04/07/1999CN2313339Y Holdless earphone clamp-case for vehicle
04/01/1999WO1999016200A2 Intelligent data bus interface using multi-port memory
04/01/1999WO1999003300A3 Redundancy termination
03/1999
03/25/1999WO1999014882A2 A packet-based telemedicine system for communicating information between central monitoring stations and remote patient monitoring stations
03/25/1999CA2303118A1 Method and system for fast routing lookups
03/25/1999CA2301937A1 A packet-based telemedicine system for communicating information between central monitoring stations and remote patient monitoring stations
03/18/1999WO1998059459A3 Network access device b-answer
03/04/1999WO1999011016A1 Apparatus and method for concurrent voice and data transmission
02/1999
02/09/1999US5870473 Electronic transfer system and method
02/09/1999US5870429 Apparatus method, and software modem for utilizing envelope delay distortion characteristics to determine a symbol rate and a carrier frequency for data transfer
02/02/1999US5867490 Direct radio broadcast receiver for providing frame synchronization and correlation for time division multiplexed transmissions
01/1999
01/21/1999WO1999003300A2 Redundancy termination
01/21/1999WO1998048536A3 Communications module based repeater
01/19/1999CA2161057C Soft decision digital communication method and apparatus
12/1998
12/30/1998WO1998059477A1 Network access device dial-up port allocation
12/30/1998WO1998059459A2 Network access device b-answer
12/30/1998WO1998059295A1 Network access device monitoring
12/02/1998EP0881562A1 Electrical lead and financial terminal including the lead
12/02/1998CN1200488A Electronic self-locating system and method
11/1998
11/25/1998EP0880117A2 Building security system
11/24/1998US5841806 Method and apparatus for the transmission of energy-scaled variable rate data
11/19/1998CA2237671A1 Electronic self-locating system and method
11/12/1998WO1998035450A3 An information coding method and devices utilizing error correction and error detection
10/1998
10/29/1998WO1998048563A1 System and method for retail over a network
10/29/1998WO1998048536A2 Communications module based repeater
10/21/1998CN1196841A Apparatus and method of determining symbol rate and carrier frequency
10/07/1998CN1195443A 客户机/服务器通信系统 Client / server communication system
10/06/1998US5819034 In a distributed computer system
10/06/1998US5818871 Method for providing service and rate negotiation in a mobile communication sytstem
09/1998
09/17/1998WO1998032263A3 High-data-rate supplemental channel for CDMA telecommunications system
08/1998
08/26/1998EP0748549B1 A data storage device
08/13/1998WO1998035474A1 Secure packet radio network
08/13/1998WO1998035450A2 An information coding method and devices utilizing error correction and error detection
07/1998
07/23/1998WO1998032263A2 High-data-rate supplemental channel for cdma telecommunications system
07/23/1998CA2277071A1 High-data-rate supplemental channel for cdma telecommunications system
05/1998
05/26/1998US5757912 System and method for quantum cryptography
05/19/1998US5754774 Client/server communication system
05/07/1998WO1998019414A1 A digital communications system having an automatically selectable transmission rate
05/07/1998CA2264617A1 A digital communications system having an automatically selectable transmission rate
04/1998
04/30/1998WO1997030538A3 Client/server communication system
04/29/1998CN1180270A Communications terminal and control method therefor
03/1998
03/19/1998WO1998011670A1 Method and apparatus for performing decoding of codes at variable data rates
02/1998
02/12/1998WO1997049212A3 Apparatus and method of determining symbol rate and a carrier frequency
02/11/1998EP0823170A2 Client/server communication system
02/04/1998EP0669958B1 Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and/or polyaminocarboxylic acids, and the use of such mixtures
02/03/1998US5715236 System and method for generating signal waveforms in a CDMA cellular telephone system
01/1998
01/21/1998EP0717897B1 System and method for quantum cryptography
01/06/1998US5706313 Soft decision digital communication method and apparatus
12/1997
12/24/1997WO1997049212A2 Apparatus and method of determining symbol rate and a carrier frequency
12/10/1997EP0811947A1 Communications terminal and control method therefor
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