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)
07/2001
07/03/2001US6256487 Multiple mode transmitter using multiple speech/channel coding modes wherein the coding mode is conveyed to the receiver with the transmitted signal
06/2001
06/27/2001EP1110345A1 Codec mode decoding using a priori knowledge
06/27/2001EP1110143A2 Transaction recognition and prediction using regular expressions
06/06/2001EP1104955A1 System and method for generating signal waveforms in a CDMA cellular telephone system
06/05/2001US6243865 Method of relaying digital video & audio data via a communication media
05/2001
05/25/2001WO2001037153A1 System for and method of conducting on-line auctions
05/25/2001WO2000072608A3 Prioritization and flow control of data packets for a spread spectrum multiuser channel
05/25/2001CA2391970A1 System for and method of conducting on-line auctions
05/16/2001EP1099334A2 Secure message management system
05/02/2001EP1095487A2 Source adaptive digital subscriber line and method
04/2001
04/26/2001WO2001030018A1 Method for distributing keys among a number of secure devices, method for communicating with a number of secure devices, security system, and set of secure devices
04/26/2001CA2387585A1 Method for distributing keys among a number of secure devices, method for communicating with a number of secure devices, security system, and set of secure devices
04/25/2001EP1094633A1 Method for distributing keys among a number of secure devices, method for communicating with a number of secure devices, security system, and set of secure devices
04/25/2001CN1292626A Video potential flow data error control method for radio communication and computer readable medium
04/11/2001EP1090473A1 Digital data decoder that derives codeword estimates from soft data
03/2001
03/29/2001WO2001022684A1 Method and system for transmitting a chain of messages for database
03/28/2001EP1086554A2 Collision handling scheme for discrete multi-tone data communications network
03/27/2001US6208618 Method and apparatus for replacing lost PSTN data in a packet network
03/06/2001US6199181 Method and system for maintaining restricted operating environments for application programs or operating systems
02/2001
02/20/2001CA2183161C A data storage device
02/13/2001US6188702 High speed linking module
02/06/2001US6183140 System and method for monitoring international tax status
01/2001
01/31/2001EP1072117A2 Methods and apparatuses for allocating time slots to circuit-switched channels
01/30/2001US6181692 Method and apparatus for data routing, delivery, and authentication in a packet data network
01/25/2001WO2001006714A1 Scheduling and admission control of packet data traffic
01/18/2001WO2000060791A3 Collision handling scheme for discrete multi-tone data communications network
01/17/2001EP1069736A1 Scheduling and admission control of packet data traffic
01/10/2001EP1066698A2 A packet-based telemedicine system for communicating information between central monitoring stations and remote patient monitoring stations
01/10/2001CN1279785A Intelligent data bus inferface using multi-port memory
01/09/2001US6173007 High-data-rate supplemental channel for CDMA telecommunications system
01/04/2001WO2000052869A3 Method and apparatus for identifying and classifying network traffic in a high performance network interface
12/2000
12/20/2000EP1060574A2 A differential line driver
12/20/2000CN1277768A Apparats and method for concurrent voice and data transmission
12/13/2000EP1059003A2 System and method for accepting and integrating entertainment information from entertainment information producers
12/06/2000EP1057143A2 A method of relaying digital video and audio data via a communication media
12/06/2000CN1276121A Data transmission using carrierless QAM
11/2000
11/30/2000WO2000072608A2 Prioritization and flow control of data packets for a spread spectrum multiuser channel
11/30/2000CA2414139A1 Controlling packet data from multiple sources from a spread spectrum communication system
11/23/2000WO2000028690A3 Method and apparatus for converting communications between ieee 1394 devices and devices operating under a different bus network protocol
11/09/2000WO2000036780A9 High speed linking module
11/09/2000WO1999014882A3 A packet-based telemedicine system for communicating information between central monitoring stations and remote patient monitoring stations
11/07/2000US6145110 Digital data decoder that derives codeword estimates from soft data
11/02/2000WO2000045138A3 Dsss receiver
11/02/2000EP1047994A2 Intelligent data bus interface using multi-port memory
10/2000
10/26/2000WO2000064122A1 Monitoring integrity of transmitted data
10/25/2000CN1057884C System and method for generating single waveforms in CDMA celular telephone system
10/19/2000WO2000062461A2 Interleavers and de-interleavers
10/19/2000WO2000062458A2 Methods and appliances for encryption system varying dynamically depending upon variables and its applications
10/19/2000WO2000062174A1 Apparatus and method for authentication of device drivers
10/18/2000CN1270676A Packet-based telemedicine system for communicating information between central monitoring stations and remote patient monitoring stations
10/12/2000WO2000060791A2 Collision handling scheme for discrete multi-tone data communications network
10/11/2000CN1269923A Information coding method and device using error correction and error detection
10/05/2000WO2000059175A1 Correction of nonlinearity of i/q modulator
10/05/2000WO2000059174A1 Correction of phase and amplitude imbalance of i/q modulator
10/05/2000WO2000025468A3 Direct communication link between a plurality of users independent of a server
10/04/2000CN1268830A Multiple frequency band data communication equipment and communication method and storage medium therefor
09/2000
09/27/2000EP1039649A2 Method and apparatus for multiband data communication , and storage medium
09/27/2000EP0823170B1 Client/server communication system
09/21/2000WO2000036780A3 High speed linking module
09/19/2000US6122073 Communications terminal and interfacing method therefor
09/08/2000WO2000052869A2 Method and apparatus for identifying and classifying network traffic in a high performance network interface
09/08/2000WO2000028689A3 Entertainment and computer coaxial network and method of distributing signals therethrough
09/06/2000EP1033006A1 Apparatus and method for concurrent voice and data transmission
08/2000
08/31/2000WO2000033499A3 Method and apparatus for replacing lost pstn data in a packet network
08/24/2000WO2000049784A1 Method and arrangement for implementing certain negotiations in a packet data network
08/17/2000WO2000048368A1 An arrangement for distributing and despatching traffic in a network, especially h.323 generated traffic
08/16/2000CN1263684A Redundancy termination
08/10/2000WO2000046947A2 Method, system, device for proving the authenticity of an entity and/or the integrity and/or the authenticity of a message using specific prime factors
08/10/2000WO2000046946A2 Method, system, device for proving the authenticity of an entity and/or the integrity and/or the authenticity of a message
08/10/2000CA2361627A1 Method, system, device for proving the authenticity of an entity and/or the integrity and/or the authenticity of a message
08/03/2000WO2000045550A2 Method for proving the authenticity or integrity of a message by means of a public exponent equal to the power of two
08/03/2000WO2000045138A2 Dsss receiver
08/03/2000CA2360954A1 Method for proving the authenticity of an entity and/or the integrity of a message by means of a public exponent equal to the power of two
08/02/2000EP1023778A1 Method and apparatus for performing decoding of codes at variable data rates
07/2000
07/27/2000WO1999016200A3 Intelligent data bus interface using multi-port memory
07/26/2000EP1021902A2 Method and system for network access over a low bandwidth link
07/05/2000CN1258975A Asynchronous transmission mode multiplex machine and information element abandoning method
06/2000
06/28/2000EP1013050A2 Secure token device access to services provided by an internet service provider (isp)
06/22/2000WO2000036806A1 Method and arrangement in a distributed system
06/22/2000WO2000036780A2 High speed linking module
06/22/2000CA2350821A1 High speed linking module
06/20/2000CA2148356C Establishing telecommunications call paths in broadband communication networks
06/08/2000WO2000033499A2 Method and apparatus for replacing lost pstn data in a packet network
06/08/2000WO2000014920A3 Method and apparatus for data routing, delivery, and authentication in a packet data network
06/02/2000WO2000010279A3 Transaction recognition and prediction using regular expressions
05/2000
05/25/2000WO2000030289A1 Wireless communications systems with standard and robust services and methods of operation thereof
05/23/2000US6067595 Method and apparatus for enabling high-performance intelligent I/O subsystems using multi-port memories
05/23/2000CA2192252C Electronic transfer system and method
05/18/2000WO2000028690A2 Method and apparatus for converting communications between ieee 1394 devices and devices operating under a different bus network protocol
05/18/2000WO2000028689A2 Entertainment and computer coaxial network and method of distributing signals therethrough
05/18/2000WO2000007355A3 Secure message management system
05/18/2000CA2350727A1 Entertainment and computer coaxial network and method of distributing signals therethrough
05/04/2000WO2000025468A2 Direct communication link between a plurality of users independent of a server
04/2000
04/26/2000CN1251717A Secure packet radio network
04/20/2000WO1999062210A3 Secure token device access to services provided by an internet service provider (isp)
04/19/2000EP0719491B1 Method of providing service and data rate negotiation in a mobile communication system
04/05/2000EP0990335A2 Network access device b-answer
03/2000
03/29/2000EP0988600A1 Network access device monitoring
03/23/2000WO2000016513A1 Method and system for alternating transmission of codec mode information
03/16/2000WO2000014920A2 Method and apparatus for data routing, delivery, and authentication in a packet data network
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