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7369578 Digital processing of SONET pointers  
In a method of estimating a bit rate (f 1 ) of a digital signal conveyed through a SONET network between an originating node and a terminating node, the digital signal received by the originating...
7346079 Methods and structures of multi-level comma detection and data alignment in data stream communications  
Methods and structures of performing multi-level comma detection and alignment on an unaligned data stream. Each string of N consecutive bits in the unaligned data stream is monitored for a...
7336666 Data transport for bit-interleaved streams supporting lane identification with invalid streams  
A method for generating a channel stream. The method generally comprises the steps of (A) transforming a plurality of data streams, wherein every data stream entering the channel stream experiences...
7330489 Distributed data synchronization apparatus and method  
Disclosed is a method and apparatus for synchronizing data in a number of separate integrated circuits. In one embodiment, the apparatus includes a first integrated circuit configured to receive...
7308004 Method and apparatus of multiplexing and demultiplexing communication signals  
A method and apparatus for multiplexing and demultiplexing communication signals are described herein. In one embodiment, an apparatus includes first sample logic to sample a plurality of...
7292608 Method and apparatus for transferring synchronous optical network/synchronous digital hierarchy(SONET/SDH) frames on parallel transmission links  
The present invention relates to methods and systems for transferring SONET/SDH frames between nodes by mapping the SONET/SDH frames onto individual channels of data and transferring the SONET/SDH...
7245640 Packet origination  
A method, apparatus, and system for originating a packet.
7243253 Repeating switching of a cross-connect and a timing source in a network element through the use of a phase adjuster  
A method and apparatus for enabling repeated switching of a cross-connect and a timing source in a network element through the use of a phase adjuster. In one embodiment, a traffic card includes an...
7227876 FIFO buffer depth estimation for asynchronous gapped payloads  
A desired FIFO buffer fill level is continuously derived during mapping or demapping of plesiosynchronous data signals into synchronized data signals, or vice-versa. One of j predefined integer...
7194059 Method and apparatus for skip-free retiming transmission of digital information  
A skip-free retiming system and method for transmission of digital information in a plesiochronous data communication system is described. The system is capable of supporting an unlimited number of...
7180913 Transparent error count transfer method and apparatus  
It is proposed that currently unused portions of transport overhead in frames sent on a high-speed outgoing channel be used to carry error count information from each of four low-speed input...
7180901 System and method using a packetized encoded bitstream for parallel compression and decompression  
A system and method are disclosed for parallel compression and decompression of a bitstream. For compression, the bitstream is separated into a plurality of components, and the components are...
7177278 Late frame recovery method  
Method of processing a transmitted encoded media data stream is received. If a data element arrives prior to, or at, a predetermined playout deadline, the data element is decoded, the media...
7170421 Control apparatus, controlled apparatus, and remote control system and remote control method using these apparatuses  
In one aspect of this invention, a control unit generates a frame having control data, and transmits it to a controlled apparatus via a transmission/reception unit or the like at a predetermined...
7145960 Transmitter apparatus and communication system employing the same  
A transmitter apparatus has a modulator for modulating a carrier wave to produce a modulated wave having communication data superimposed thereon and a transmitter for transmitting the modulated...
7139309 Process to expand data density  
A process for transmission of information between at least two devices comprises: generating a serial message coded by means of a time sequence of binary transitions called bits; reducing the time...
7133647 Chiprate correction in digital transceivers  
A transceiver for a code division multiple access communication system comprises a receiver to receive coded information signals and a transmitter to transmit coded information signals. A local...
7085293 Scaleable transport of TDM channels in a synchronous frame  
A method and system for processing communication at a node in a communication system makes use a series of fixed-length data frames in which multiple data streams are multiplexed. Each of the data...
7079553 Method and system for embedding a first clock signal phase within a second signal  
A technique for embedding a first clock phase within a second signal is described. In one embodiment, the invention comprises a method of embedding a phase of a first signal within a second signal...
7079485 Multiservice switching system with distributed switch fabric  
A digital switching system comprises: (a) a line card layer containing a plurality of real or virtual line cards; (b) a switch card layer containing a plurality of real or virtual switch cards; and...
7076392 Test bit-stream generator and method for decoders  
The present invention provides a test bitstream generator and method for generating test bitstreams to test a bitstream decoder that is arranged to decode bitstreams generated in accordance with a...
7068685 Method and arrangement for enhancing the handling of TTI identifier  
The invention relates to a method for finding frame alignment and accepting and monitoring TTI identifiers contained in frames in an SDH system. Advantageously the method according to the invention...
7050439 Method for performing discontinuous transmission in an asynchronous transfer mode  
A method for performing discontinuous transmission in an asynchronous transfer mode is described, wherein a downlink transmission of an ATM cell is performed each time a predetermined number of...
7042913 Method and system for writing data to memory elements  
A technique for provisioning cross-connects in network switching environment includes writing a first set of data into a first memory element during a first time interval and writing a second set...
7042840 Method and apparatus for summing asynchronous signal samples in a cable television digital return path  
A method and apparatus for digitizing multiple data streams having different clocks spreads an error due to clock drift is spread across many clock cycles in extremely small amounts. To combine two...
7027465 Method for contention free traffic detection  
The invention discloses a method for detecting priority of data frames comprising the steps of extracting (S 1 ) a bit pattern from a predetermined position in a frame, comparing (S 2, S 3 ) the...
7024214 Synchronizing over a number of synchronization mechanisms using flexible rules  
Two computer systems in a network each have a local store that contains a copy of a data item that is to be synchronized. One of the computer systems may be, for example, a mobile device while the...
7023942 Method and apparatus for digital data synchronization  
Synchronization and desynchronization of a data signal transported in a synchronous frame across a synchronous communications network, such as SONET/SDH, reduces waiting-time jitter. A timing...
7007106 Protocol and method for multi-chassis configurable time synchronization  
Systems and methods are disclosed for time synchronization of operations in a control system. Synchronization networks and devices are provided for transferring synchronization information between...
7003407 Circuit for detecting and formatting data frames  
The invention concerns non-contact smart cards and, more particularly in such cards, a circuit for detecting data frames and providing them with a parallel format for their processing. The...
6999480 Method and apparatus for improving data integrity and desynchronizer recovery time after a loss of signal  
An apparatus and corresponding method for preventing data loss in network devices is disclosed. The present invention monitors an incoming data stream to a network device, or devices, and in the...
6985499 Precise network time transfer  
The invention comprises a method and apparatus for reducing uncertainty in timing on the network. The uncertainty in receive buffers is removed by time stamping the arriving packets before sending...
6975649 Hyper-concatenation across independent pointer processors  
A concatenated signal carrying an arbitrary mix of concatenated data traffic is split and transported across a network between a start node and an end node through a hyper-concatenated connection...
6973258 Method and apparatus for recording digital data streams  
A method and apparatus for recording digital data streams. When a digital broadcast data stream received by a set top box is transmitted through a communication interface such as an IEEE-1394 bus...
6970115 Cycle slip framing system and method for selectively increasing a frame clock cycle to maintain related bits within the same parallel-output frame of a deserializer  
A system and method are provided for synchronizing a frame of related bits output from a deserializer to the related bits serially fed to the deserializer. Synchronization is achieved by overcoming...
6959015 Method and apparatus for aligning multiple data streams and matching transmission rates of multiple data channels  
The invention provides a novel scheme to align data streams across multiple transmission channels and match multiple transmissions with one receiving rate. The channel aligning aspect of this...
6959008 Alignment of TDM-based signals for packet transmission using framed and unframed operations  
A method and apparatus for alignment of TDM-based signals for packet transmission using framed and unframed operations are described. In an embodiment, a line card in a network element includes a...
6882662 Pointer adjustment wander and jitter reduction apparatus for a desynchronizer  
An apparatus for reducing the effects of pointer adjustments, wander, and jitter during desynchronization of a non-uniformly gapped data stream from a payload of a synchronized signal is disclosed....
6868093 Methods and apparatuses for providing synchronization in a communication network  
The present invention refers to methods and apparatuses for providing synchronization in a time division multiplexed network, wherein data is transferred on multi-access bitstreams in...
6865190 Framing techniques for ADSL systems  
Framing techniques for ADSL systems that allow programmable fixed overhead efficient framing and seamless rate changes.
6862278 System and method using a packetized encoded bitstream for parallel compression and decompression  
A system and method are disclosed for parallel compression and decompression of a bitstream. For compression, the bitstream is separated into a plurality of components, and the components are...
6859465 Method and apparatus for constant throughput rate adaptation  
A method and apparatus is described for providing rate adaptation between a first node and a second node in a data communication environment employing bit stuffing and having a link budget of B...
6829717 Method and apparatus for generating timing information  
According to telecommunication standards relating to communication networks supporting an Asynchronous Transfer Mode (ATM), timing information relating to a Constant Bit Rate (CBR) service needs to...
6829315 Alignment of parallel data channels using header detection signaling  
A data communication circuit includes a decoder and an alignment buffer. The decoder receives and decodes parallel (N) bit channels into parallel (M+X) bit channels with signaling bits that...
6819686 Backplane protocol  
A method and apparatus for transferring information in a communications system is described. In one embodiment, the method comprises creating a frame of information on a first line card and sending...
6819683 Communications system and associated deskewing and word framing methods  
A communications system includes N parallel communications channels connecting first and second devices. The N channels may include N−1 channels for carrying information symbols, and an Nth...
6807151 Apparatus and method for group-wise detection of failure condition  
Group-wise testing of the clocks arriving at a switching office is undertaken by multiplexing the clocks onto a single line and developing a signal therefrom that is indicative of a problem, if it...
6785473 WDM network and WDM network device  
Disclosed is a WDM network which has: a lightwave path which connects between clients and each of which is provided with an overhead, and a sub-network which is defined by dividing the WDM network....
6785299 Optimized high-level data link control encoding/decoding  
A system and method are provided for encoding and decoding a bitstream according to the High level Data Link Control protocol (HDLC) without having to analyze the bitstream bit by bit. An optimized...
6763038 Light transmission equipment  
In a light transmission equipment which can generate a desired concatenation signal from a maximum concatenation signal standardized in a synchronous transmission mode, a master and a slave circuit...
Matches 1 - 50 out of 273 1 2 3 4 5 6 >