Patents
Patents for H04J 3 - Time-division multiplex systems (63,408)
10/1991
10/21/1991CA2033123A1 Multiport - multipoint digital data service
10/18/1991CA2040668A1 Multipoint multiplexing in a dds network
10/17/1991WO1991015908A1 Ring communication system
10/17/1991WO1991015904A1 Base station transceiver diagnostics equipment
10/16/1991EP0451767A2 Frame synchronization stabilizer
10/16/1991EP0451694A2 Time-multiplex transmission system
10/16/1991CN2086951U Multiplexing communication integrated circuit
10/15/1991US5058163 Interface unit for transferring digital data between time-domain multiplexed communication links
10/15/1991US5058141 Single circuit for detecting a frame synchronization pattern and generating control signals
10/15/1991US5058134 Process of synchronizing a receiving modem after a training on data
10/15/1991US5058132 Clock distribution system and technique
10/15/1991US5058106 Flywheel circuit
10/15/1991US5058104 Tdm demultiplexer with dedicated maintenance channels to indicate high-speed line faults to low speed circuits
10/15/1991CA1290868C Voice data discriminator
10/15/1991CA1290824C Clock circuit synchronization in digital transmission system
10/14/1991CA2038769A1 Congestion avoidance in high-speed network carrying bursty traffic
10/11/1991WO1991015910A1 Method of synchronising the pseudo-random binary sequence in a descrambler
10/10/1991DE4011264A1 Flexible multiplexing procedure for programmable digital multiplexer
10/09/1991EP0450974A2 Transmission congestion control method and apparatus
10/09/1991EP0450879A1 Ring communication system
10/09/1991EP0450828A2 Method for synchronizing interconnected digital equipment
10/09/1991EP0450382A2 Method for frequency sharing in a frequency hopping communications network
10/09/1991EP0450269A2 Phase locked loop arrangement
10/08/1991US5056119 Adaptive frame resynchronizer apparatus
10/08/1991US5056087 Pcm communication system
10/08/1991US5056084 System for transmitting hdlc frames on a pcm type link using a single hdlc circuit and a transposition buffer memory
10/07/1991WO1991015905A1 Flexible-multiplexing process and device
10/07/1991CA2079793A1 Flexible-multiplexing process and device
10/03/1991WO1991015066A1 Distributed protocol for improving the survivability of telecommunications trunk networks
10/02/1991EP0449632A2 Matrix switcher apparatus
10/02/1991EP0448927A1 Procedure for the transmission of time discrete information
10/02/1991EP0448734A1 Circuit arrangement for the routine testing of the interface between transmission groups and the switching network of a PCM telecommunications exchange
10/02/1991CN1014197B Demultiplexer with circuit for reducing waiting-time jitter
10/01/1991CA2050898A1 Base station transceiver diagnostics equipment
09/1991
09/29/1991WO1991015067A1 Method for embedding information in modem handshake procedure and modems incorporating the same
09/28/1991CA2034651A1 Distributed protocol for improving the survivability of telecommunications trunk networks
09/26/1991DE4109150A1 Local area communications network - feeds synchronisation information along lines extending between independently clocked nodes
09/25/1991EP0448045A1 System for suppressing spread of error generated in differential coding
09/25/1991EP0448020A1 Elementary switching unit for cross-connecting digital bit flows by time-multiplexing bit streams of different bit rates
09/25/1991EP0447987A2 Method for synchronizing a wide area network without global synchronization
09/25/1991EP0447749A2 Method for transmitting multirate data
09/25/1991EP0447731A1 A synchronization circuit for a synchronous switching system
09/25/1991EP0447485A1 System for cross-connecting high speed digital signals
09/25/1991EP0447461A1 Virtual tributary cross connect switch and switch network utilizing the same
09/24/1991US5052031 Phase locked loop including non-integer multiple frequency reference signal
09/24/1991US5052030 Method for synchronizing a clock, generated with the assistance of a counter, to a reference clock
09/24/1991US5052029 Self-correcting synchronization signal method and apparatus
09/24/1991US5052028 Method for synchronizing the phase of clock signals of two clock generators in communications networks
09/24/1991US5052025 Synchronous digital signal to asynchronous digital signal desynchronizer
09/24/1991US5052022 Repeater and PLL circuit
09/24/1991US5051993 Mixed modulation level communication system
09/24/1991US5051990 Phase adjustment circuit
09/24/1991US5051989 Switching arrangement capable of switching burst time plan tables/channel assignment pattern tables of a specific terrestrial station
09/24/1991US5051988 Transmission line encoding/decoding system
09/24/1991US5051984 Methods for flexibly allocating bandwidth for a point-to-point serial, bidirectional communication path
09/24/1991US5051979 Method and apparatus for errorless switching
09/24/1991CA1289684C Method of adjusting the interstation delay in an information transmission system comprising a large number of relay stations arranged in cascade and utilizing in one transmission direction the tdma method, and a system to which such a delay adjusting method is applied
09/24/1991CA1289668C Digital carrier channel bus interface module for a multiplexer having a cross-connect bus system
09/20/1991WO1991015061A1 A method for synchronizing the transmissions in a simulcast transmission system
09/19/1991WO1991014328A1 Overspeed data rate adjustment method and apparatus in an asynchronous data stream
09/19/1991WO1991014319A1 Digital data transmission system
09/18/1991EP0447053A2 Integrated data link control with dynamic hyperchannel mapping
09/18/1991EP0446441A2 Flexible multiplex system
09/17/1991US5050192 Automatic gain control
09/17/1991US5050166 Transfer of messages in a multiplexed system
09/17/1991US5050164 Optical customer premises network
09/17/1991US5050161 Congestion management based on multiple framing strategy
09/17/1991CA1289276C Optical fiber transmission apparatus, in particular for submarine use
09/15/1991WO1991014318A1 Switch for multiplexes
09/15/1991CA2058298A1 Switch for multiplexes
09/11/1991EP0446196A2 Method of transmitting binary information in an optical transmission network
09/11/1991EP0445318A2 Method for the time division multiplex transmission of digital messages
09/11/1991CN1054517A Hopped-carrier dynamic frequency reuse
09/10/1991US5048013 Transmission congestion control method and apparatus
09/10/1991CA1288878C Timing and carrier recovery in tdma without preamable sequence
09/09/1991CA2037689A1 Method for transmitting binary information in an instant of some timeslots before the beginning of the transmission
09/07/1991WO1991014320A1 Digital signal multiplexer
09/07/1991CA2054742A1 Digital signal multiplexer
09/05/1991WO1991013501A1 Frame synchronizing method for digital mobile radio
09/04/1991EP0444656A2 Multiplex communication system
09/04/1991EP0444592A2 Multidirection multiplex communication system
09/04/1991CN1054344A Method and apparatus for detecting frame alignment word in data stream
09/03/1991USH967 High speed, long distance, data transmission multiplexing circuit
09/03/1991US5045714 Multiplexer with improved channel select circuitry
09/03/1991CA1288520C Synchronization recovery in a communications system
08/1991
08/28/1991WO1991013521A1 Hopped-carrier dynamic frequency reuse
08/28/1991EP0443782A2 Apparatus and method for time multiplexing a resource among a plurality of entities
08/28/1991EP0443754A2 Method and apparatus for detecting a frame alignment word in a data stream
08/28/1991EP0443672A2 Asynchronous transfer mode system
08/28/1991EP0443376A2 Frame synchronization circuit
08/28/1991EP0443029A1 Signal generator and signal receiver based on synchronous multiplex transmission system
08/28/1991CN1054159A Base station emulator
08/28/1991CN1054158A Synchronous-asynchronous converter
08/27/1991US5043982 Multichannel multipoint network using time-division multiplexing incorporating a time offset for propagation delay
08/27/1991US5043981 Method of and system for transferring multiple priority queues into multiple logical FIFOs using a single physical FIFO
08/27/1991US5043978 Circuit arrangement for telecommunications exchanges
08/24/1991CA2036545A1 Method and apparatus for detecting a frame alignment word in a data stream
08/22/1991WO1991012677A1 Multiple buffer time division multiplexing ring
08/22/1991WO1991012611A1 Method and apparatus for data interleave with pseudo-randomized resynchronization
08/22/1991WO1991012535A1 Device for identifying traffic on a paired cable