Multiplexer Or Distributor And Technique For Handling Low Level Input Signal Patents (Class 370/532)
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Patent number: 7859991Abstract: A signal transmitting apparatus includes a sending part and a receiving part. The sending part converts each width of a plurality of digital input signals into a voltage in accordance with a predetermined weight, generates a send signal by adding voltages converted from the plurality of digital input signals, and outputs the send signal. The receiving part receives the send signal from the sending part, compares the send signal with a plurality of predetermined voltages, generates each of the digital input signals, and outputs each of the digital input signals.Type: GrantFiled: April 15, 2004Date of Patent: December 28, 2010Assignee: Ricoh Company, Ltd.Inventor: Tatsuya Fujii
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Patent number: 7848365Abstract: Provided are an apparatus for receiving cable broadcasting programs and a multiplexer and a de-multiplexer thereof for reducing data amount processed in a Cable CARD and for correcting synchronization of descrambled data stream. The apparatus includes: a multiplexing unit for filtering a broadcasting stream to select only programs selected by a viewer and multiplexing the selected programs; a conditional-access processing unit for receiving the multiplexed streams and processing the multiplexed streams for conditional access (descrambling); and a de-multiplexing unit for de-multiplexing the multi stream from the conditional-access processing unit and correcting a program clock reference (PCR).Type: GrantFiled: June 13, 2006Date of Patent: December 7, 2010Assignee: Electronics and Telecommunications Research InstituteInventors: Joon-Young Jung, Eun-Jung Kwon, O-Hyung Kwon, Soo-In Lee
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Patent number: 7844230Abstract: An integrated multimode radio includes a multimode receiver and a multimode transmitter. The multimode receiver includes a shared receiver front-end, a receiver multiplexor, and a plurality of receiver IF stages. The multimode transmitter includes a shared transmitter front-end, a transmitter multiplexor, and a plurality of transmitter IF stages.Type: GrantFiled: June 26, 2009Date of Patent: November 30, 2010Assignee: Broadcom CorporationInventors: Hooman Darabi, Brima Ibrahim, Ahmadreza Rofougaran
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Patent number: 7844286Abstract: Systems and methods for providing alerts to end users of networked enabled portable devices are provided so that the end users are made aware when broadcast emergency alerts are issued. In various embodiments, a portable device is enabled to receive information about an emergency alert broadcast of which the user should be aware, e.g., from the EAS, and to notify the user of the emergency alert. The user can be automatically taken to the emergency alert information by having the portable device automatically tune to the emergency broadcast information, the user can optionally retrieve the emergency information by tuning to the emergency broadcast channel, and/or the user can otherwise be presented with a reference to the emergency data, such as a link to the information.Type: GrantFiled: June 21, 2006Date of Patent: November 30, 2010Assignee: AT&T Mobility II LLCInventors: DeWayne Allan Sennett, Brian Kevin Daly
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Patent number: 7746785Abstract: An apparatus and method are provided to perform a time multiplexing logic in a module, are provided including identifying a driving flop and a receiving flop in the module, receiving a modified input signal, and identifying a worst case timing path for the modified input signal to transmit from the driving flop to the receiving flop. The time multiplexing logic of the apparatus and method further identifies a predetermined point of the worst case timing path, and inserts a logic unit at the predetermined point allowing the time multiplexing logic circuit to process and output the modified input signal at a maximum frequency.Type: GrantFiled: August 22, 2006Date of Patent: June 29, 2010Assignee: Broadcom CorporationInventor: Peter Michels
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Patent number: 7738513Abstract: A method for multiplexing digital data, wherein a packet of digital data is simultaneously sent from front to rear and from rear to front. Additionally, a method for multiplexing digital data, wherein a packet of digital data is simultaneously sent from the beginning of the packet towards the end and from the end towards the beginning. Additionally, a method for multiplexing digital data, wherein simultaneously a packet of digital data is sent and the same packet is sent backwards.Type: GrantFiled: December 8, 2003Date of Patent: June 15, 2010Assignee: Nonend Inventions N.V.Inventors: Marc van Oldenborgh, Martijn Gnirrep
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Patent number: 7724784Abstract: A computer implemented method, system, and computer usable program code for classifying a data stream using high-order models. The data stream is divided into a plurality of data segments. A classifier is selected for each of the plurality of data segments. Each of a plurality of classifiers is clustered into states. A state transition matrix is computed for the states. The states of the state transition matrix specify one of the high-order models for classifying the data stream.Type: GrantFiled: September 13, 2006Date of Patent: May 25, 2010Assignee: International Business Machines CorporationInventors: Chang-Shing Perng, Haixun Wang, Jian Yin
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Patent number: 7688867Abstract: A dual-mode network storage controller integrated on a chip is connected to a first set of hosts over a block-level storage area network (SAN), and to a second set of hosts over a metadata Ethernet/IP network. The dual-mode storage controller is also connected to one or more storage devices, such as a Redundant Array of Independent Disks (RAID). The storage controller comprises dedicated-hardware metadata translation logic for translating metadata (e.g. file-level) storage commands into block-level storage commands. The storage controller can also include block translation logic for translating logical block-level storage commands into physical block-level storage commands. The storage controller further comprises multiplexing logic for sequentially transmitting to the storage device(s) block level storage commands derived from the commands received from the first set of hosts and the second set of hosts.Type: GrantFiled: August 27, 2007Date of Patent: March 30, 2010Assignee: QLogic CorporationInventor: Govind Kizhepat
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Patent number: 7684446Abstract: Embodiments of the present invention provide a system and method of providing analog setpoints that eliminate, or at least substantially reduces, the shortcomings of prior art analog setpoint systems and methods. One embodiment of the present invention includes a method of multiplexing analog setpoints comprising transmitting the analog signal to a plurality of target devices, wherein the analog signal represents multiple setpoints, transmitting a first setpoint indicator separate from the analog signal to indicate to a first target device that a first setpoint for the first target device is being represented by the analog signal, saving a first setpoint value asserted by the analog signal at the first target device in response to the first setpoint indicator.Type: GrantFiled: March 1, 2006Date of Patent: March 23, 2010Assignee: Entegris, Inc.Inventor: Robert F. Mcloughlin
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Patent number: 7668210Abstract: A method and apparatus are provided for reducing current demand variations in large fanout trees. The fanout tree is split into at least 2 sub-groups, each preferably with substantially equal parasitic capacitance. Data is then scrambled according to a scrambling sequence function to provide scrambled data having a constant number of bits that are toggled with respect to time, such as when observed in pairs of sub-groups. Functionally, an apparatus according to an embodiment of the present invention includes 3 blocks: a scrambler, egress logic, and a de-scrambler. The egress logic is simply a block of storage that can reorder the bytes received from the scrambler. The de-scrambler de-scrambles the retransmitted data based on the scrambling sequence function. Embodiments of the present invention can be applied to any system where data must fanout from a single source to many destinations, such as switches.Type: GrantFiled: April 23, 2004Date of Patent: February 23, 2010Assignee: PMC-Sierra, Inc.Inventors: Winston Ki-Cheong Mok, Scott A. Muma, Nicholas W. Rolheiser
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Publication number: 20100027568Abstract: A circuit for sharing Tx/Rx ports of a CMOS based time multiplexed transceiver includes a Low Noise Amplifier (LNA) and a Power amplifier (PA), and deploys a single RF choke shared between the LNA and PA. The circuit selectively functions as a PA cascode or a LNA input device. In one form the circuit uses MOS transistors configured for use in one of Blue tooth, WLAN and TDMA applications, taking advantage of source-drain symmetry of the MOS transistors. The circuit may include a DC path and be used in WLAN applications, wherein the sharing of the single choke is enabled by one switch in the DC path. As described, the single RF choke is disposed outside of the LNA and the PA. The circuit supports high out powers and causes reduced signal loss due to just one LC tank as opposed to two LC tanks present in the prior art.Type: ApplicationFiled: July 29, 2008Publication date: February 4, 2010Inventors: Gireesh Rajendran, Apu Sivadas, Rittu Kulwant Sachdev, Krishnaswamy Thiagarajan
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Patent number: 7627005Abstract: A multiplexing system couples a pair of input ports to a either a dual ported disk drive or a single ported disk drive. The system includes a multiplexer having the pair of first ports and a pair of second ports. The multiplexer is configurable to couple each one of the pair of first ports to a corresponding one of the pair of second ports when the pair of second ports are coupled to the dual ported disk drive and to couple both pair of first ports to a single one of the second ports when a single ported disk drive is coupled to said single one of the second ports.Type: GrantFiled: September 29, 2005Date of Patent: December 1, 2009Assignee: EMC CorporationInventor: Douglas E. Peeke
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Patent number: 7623554Abstract: The invention relates to a multiplexing device comprising a data compressor. The compressed data block leaving said compressor occupies a particular bandwidth. According to the invention, a bandwidth prediction unit calculates said bandwidth and deduces from it the available bandwidth for conveyance in a time space dedicated to Internet traffic. The invention also relates to a multiplexing device and a multiplexing/demultiplexing system. Particular application in a satellite telecommunication system.Type: GrantFiled: July 21, 2003Date of Patent: November 24, 2009Assignee: ThalesInventors: Nicolas Chuberre, Jean Farineau, Régis Lenormand, Jérome Fabre, Grégory Maman
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Patent number: 7609729Abstract: Telecommunication equipment includes a TDM interface operable to receive STS-n data, and a packet interface operable to receive packet/cell data and filling a STS-MC payload with the packet/cell data. An n×n cross-connect is coupled to the TDM interface and operable to switch and assign the STS-n data to any one of n STS-1 time slots. A multiplexer is coupled to the cross-connect and the packet interface and operable to combine the switched STS-n data and the STS-MC packet/cell data into an STS-N payload for transport, where N is the sum of n and M.Type: GrantFiled: May 31, 2002Date of Patent: October 27, 2009Assignee: Fujitsu LimitedInventor: Paul Elias
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Patent number: 7590153Abstract: A protocol independent multiplexer is described that allows for multiple different protocols that operate at different bit rates to be combined and output in a format that may have yet another bit rate. The multiplexer includes a series of inputting devices that are each coupled to a respective buffering device, a mapping device coupled to each of the buffering devices, and an outputting device coupled to the mapping device. Each of the inputting devices receive an input optical signal and forwards recovered data information to the corresponding buffering device. The buffering devices store the data information and output to the mapping device, the outputting being controlled by the mapping device to ensure that the buffering devices remain approximately half full. The mapping device formats the data information into individual data units and outputs the data units to the outputting device which subsequently multiplexes the data units.Type: GrantFiled: January 24, 2003Date of Patent: September 15, 2009Assignee: Nortel Networks LimitedInventors: Alan G. Solheim, Colin Kelly, Matthew Brown, Chris Knapton
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Patent number: 7561852Abstract: An integrated multimode radio includes a multimode receiver and a multimode transmitter. The multimode receiver includes a shared receiver front-end, a receiver multiplexor, and a plurality of receiver IF stages. The multimode transmitter includes a shared transmitter front-end, a transmitter multiplexor, and a plurality of transmitter IF stages.Type: GrantFiled: August 13, 2007Date of Patent: July 14, 2009Assignee: Broadcom CorporationInventors: Hooman Darabi, Brima Ibrahim, Ahmadreza Rofougaran
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Patent number: 7555019Abstract: A digital broadcast system which, during the control of caching tables multiplexed into a transport stream, optimally updates the caching without wasting filter resources on changes such as updates to a higher version, addition, or disappearance of the tables. A digital broadcast apparatus broadcasts a transport stream into which an available table information table (ATT) is multiplexed. The ATT monitoring unit in the receiving apparatus regularly monitors an update in the ATT and generates an available table information list every time the ATT has been updated to a higher version. The cache controlling unit compares the available table information list with a cache information list, assigns a filter resource and updates the cache of the table when there is a table updated to a higher version or added, and clears the cache of the table when there is a table that has disappeared.Type: GrantFiled: February 19, 2004Date of Patent: June 30, 2009Assignee: Panasonic CorporationInventor: Naohisa Motomura
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Patent number: 7532648Abstract: A system (e.g., a chip) includes first and second function blocks (e.g., function blocks) coupled to an input/output (I/O) device (e.g., a bi-directional pin or pad) via a multiplexing module. The multiplexing module can be used for both input and output of signals between the function blocks and the I/O device. Optionally, a re-clocking system is coupled to the function blocks, the I/O device, and the multiplexing module. The re-clocking system re-clocks one or more signals being input into the multiplexing module so that they are timed correctly for input or output from the system.Type: GrantFiled: August 14, 2003Date of Patent: May 12, 2009Assignee: Broadcom CorporationInventor: James D Sweet
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Patent number: 7526001Abstract: A statistical multiplexer includes a plurality of primary encoders 120 and at least one backup encoder 130 which is activated a primary encoder fails. The statistical multiplexer also includes at least two multiplexers 140,160 such that at any given time one of the multiplexers 140,160 is in an active state and the other is in a backup state. The encoders 120, 130, the multiplexers 140, 160, and a rate processor 150 employ a dynamic identity allocation arrangement for identifying a source of the messages such that messages originating from the encoders 120, 130 indicate whether the source is a primary 120 or backup encoder 130 and messages originating from the multiplexers 140, 160 include a character selected from among a predetermined sequence of characters that is incremented to the next character in the sequence each time one of the multiplexers 140, 160 transitions between an active and a backup state.Type: GrantFiled: July 26, 2004Date of Patent: April 28, 2009Assignee: General Instrument CorporationInventors: John Sanders, Erik J. Elstermann, Siu-Wai Wu
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Patent number: 7460557Abstract: A media converter capable of converting digital data of a unidirectional interface to digital data of a bidirectional interface or converting vice versa and converting digital data in commercial use to digital data for consumers or converting vice versa so that consumers are able to obtain even high quality images is provided. The media converter has a function for inputting digital data of a unidirectional interface and converting the inputting digital data to digital data of a bidirectional interface, and a function for inputting digital data of a bidirectional interface and converting the inputting digital data to digital data of a unidirectional interface, wherein the unidirectional interface is an HD-SDI (High Definition Serial Data Interface) format digital interface, and the bidirectional interface is a digital interface conforming to IEEE1394.Type: GrantFiled: July 15, 2004Date of Patent: December 2, 2008Assignee: Sony CorporationInventor: Tadahiro Ohata
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Publication number: 20080123693Abstract: There are provided a customer premise equipment (CPE) device, a corresponding method, and a Digital Subscriber Line Access Multiplexer (DSLAM) for connecting to a digital network and performing forward error correction (FEC). The CPE device includes a decoder for decoding one of a plurality of incremental FEC signals for media content. Each of the plurality of incremental FEC signals is for providing incrementally increasing levels of FEC for the media content.Type: ApplicationFiled: July 14, 2005Publication date: May 29, 2008Inventor: Kumar Ramaswamy
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Patent number: 7376130Abstract: High-speed data transfer rates are provided between a central office and customer premise equipment with a multiplexer that is interposed between the central office and the customer premise equipment, and that functions as a remote access node. The multiplexer communicates at high data rates via downstream data links such as twisted-pair conductors between the multiplexer and the customer premise equipment. By positioning the multiplexer physically close to the customer premise equipment, DSL data rates can be achieved. In one application, the multiplexer assigns a variable number of the upstream data links between the central office and the multiplexer on a dynamic, adaptive, and automatic basis to individual ones of the downstream data links. In this way, unused data link capacity of the upstream data links is used to provide high data transmission rates when required between the multiplexer and the central office.Type: GrantFiled: December 22, 2003Date of Patent: May 20, 2008Assignee: Utstarcom, Inc.Inventor: P. Michael Farmwald
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Patent number: 7356052Abstract: A method for fast and economic handling of overhead bytes of an incoming high order data stream to form a corresponding outgoing high order data stream, the method comprising a) presenting the incoming high order data stream as a plurality of N component data streams transmitted in parallel, b) providing a common overhead processing unit (COHPU) capable of handling overhead bytes of a single one of the component data streams, c) forwarding overhead bytes of the component data streams to the COHPU in a circular order, while keeping docketing (ID) information for each particular overhead byte; d) processing each of the overhead bytes in the COHPU, and e) modifying the N component data streams to obtain an outgoing high order data stream based on results of the processing and the ID information with respect to each of the processed overhead bytes.Type: GrantFiled: June 20, 2002Date of Patent: April 8, 2008Assignee: ECI Telecom Ltd.Inventors: Amihai Viks, Jacob Ruthstein, Rafael Leiman
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Patent number: 7352781Abstract: A system for intercommunicating data traffic provides the capability to connect external interfaces that use one third or less of the OC3 bandwidth capacity in a reduced bandwidth mode that reduces system cost, while automatically switching to the full bandwidth mode to allow connection to external interfaces that utilize the full OC3 bandwidth capacity.Type: GrantFiled: November 10, 2003Date of Patent: April 1, 2008Assignee: Fujitsu LimitedInventors: Stephen J. Brolin, David Michael Colven
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Patent number: 7352711Abstract: In the inventive circuit arrangement and appertaining method, data of at least respectively one ISDN data connection, a traditional telephone connection as well as of a broadband data connection are transmitted in an SDSL frame of an SDSL data connection, where the necessary control data are suitably transmitted in the overhead of the SDSL frame.Type: GrantFiled: October 26, 2000Date of Patent: April 1, 2008Assignee: Infineon Technologies AGInventors: Dirk Daecke, Guenther Schauer, Armin Tannhaeuser
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Patent number: 7313097Abstract: A bit stream multiplexer includes an input ordering block, a plurality of multiplexers, an output ordering block, and a loop back circuitry. A bit stream demultiplexer includes an input ordering block, a plurality of demultiplexers, and an output ordering block. During testing, the transmit multiplexing integrated circuit and the receive demultiplexing integrated circuit are coupled into a circuit tester. Then, a plurality of input lines of the transmit multiplexing integrated circuit are coupled to a plurality of output data lines of the circuit tester. A loop back output of the transmit multiplexing integrated circuit is then coupled to a loop back input of the receive demultiplexing integrated circuit. A plurality of output lines of the receive demultiplexing integrated circuit are coupled to a plurality of input data lines of the circuit tester.Type: GrantFiled: March 17, 2003Date of Patent: December 25, 2007Assignee: Broadcom CorporationInventors: Ali Ghiasi, Bo Zhang
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Patent number: 7257380Abstract: An integrated multimode radio includes a multimode receiver and a multimode transmitter. The multimode receiver includes a shared receiver front-end, a receiver multiplexor, and a plurality of receiver IF stages. The multimode transmitter includes a shared transmitter front-end, a transmitter multiplexor, and a plurality of transmitter IF stages.Type: GrantFiled: September 9, 2005Date of Patent: August 14, 2007Assignee: Broadcom CorporationInventors: Hooman Darabi, Brima Ibrahim, Ahmadreza Rofougaran
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Patent number: 7236926Abstract: A system and method for voice transmission over high level network protocols. On the Internet and the World Wide Web, such high level protocols are HTTP/TCP. The restrictions imposed by firewalls and proxy servers are avoided by using HTTP level connections to transmit voice data. In addition, packet delivery guarantees are obtained by using TCP instead of UDP. Variable compression based on silence detection takes advantage of the natural silences and pauses in human speech, thus reducing the delays in transmission caused by using HTTP/TCP. The silence detection includes the ability to bookend the voice data sent with small portions of silence to insure that the voice sounds natural. Finally, the voice data is transmitted to each client computer, independently from a common circular list of voice data, thus insuring that all clients will stay current with the most recent voice data. The combination of these features enables simple, seamless, and interactive Internet conferencing.Type: GrantFiled: July 21, 2003Date of Patent: June 26, 2007Assignee: Intercall, Inc.Inventors: Andrew W. Scherpbier, Mark Randle Boyns
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Patent number: 7173557Abstract: An A/D converter for converting an analog input into a binary-encoded word includes a bit-weight memory storing bit weights that include maximum, mimimum, and medium weights. During a conversion step, first and second registers store lower and upper weights, and a D/A converter converts one of the upper and lower weights into an analog bit-weighting signal. A comparison device provides a comparison result indicative of a comparison between the analog input and the analog bit-weighting signal and stores the result in a third register. A multiplexer selects the upper weight when the analog input exceeds the analog bit-weighting signal and the lower weight otherwise. A subtractor subtracts, from the bit weight of a preceding conversion step, a smaller weight that is smaller than, but closest, to the previous bit weight. An adder adds the new lower weight to the smaller weight to get a new upper bit weight.Type: GrantFiled: August 9, 2002Date of Patent: February 6, 2007Assignee: Infineon Technologies AGInventor: Franz Kuttner
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Patent number: 7161959Abstract: A method and system for improving the passage of silent or unused status of Ds0 channel to a data switch with a Ds0 switching capacity. The method allows the Ds0 channel source to be the only equipment that must engage a digital signal processor to remove silent and unused Ds0 channels from a Ds0 channel carrying data packet. The method provides for the Ds0 channel source, the intermediate nodes (data switches with Ds0 switching matrixes included) and Ds0 channel destination to recognize a simple and efficient means of passing suppression status of a Ds0 channel through the entire network.Type: GrantFiled: July 24, 2003Date of Patent: January 9, 2007Assignee: MCI, LLCInventor: Forrest L Pierson, Jr.
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Patent number: 7123581Abstract: A low-cost, high-speed data switching system and method uses several parallel switching systems or fabrics. In one of various embodiments, for example, the constituent data flows in a data stream can be selectively routed to a switching fabric that has the lowest input data rate. Data flows can be assigned to the various switching fabrics so as to balance the amount of data passing through each parallel system. Data flows can be re-assigned on an as-needed basis to insure maximum throughput. In the case where a data flow initially routed into one switching fabric must be re-routed to a different fabric, the ordering of data packets can be preserved by withholding the transfer of packets through the second fabric until the packets previously sent into the first fabric have cleared. Methods and apparatus of the present invention find application to parallel computing as well.Type: GrantFiled: October 9, 2001Date of Patent: October 17, 2006Assignee: Tellabs Operations, Inc.Inventors: Vishal Sharma, Timothy Y. Chow, Charles E. Rohrs, Steven Dunstan, Joseph Cerra
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Patent number: 7103278Abstract: A virtual concatenation method for optical channels in WDM networks. In transmission, the method includes providing for a plurality of frames, each frame including a byte reserved for a concatenation flag; writing the same predefined value in the concatenation byte of n frames (n=1, 2, 3, . . . ); and transmitting the n frames via n respective channels (?1, ?2, . . . ?n). In reception, it includes receiving the first reference frame at one instant; reading the concatenation byte value of the reference frame; receiving the remaining signal frames after a respective determined time; reading the value of the concatenation byte of the remaining signal frames; and identifying and aligning all the signal frames with the same concatenation byte value compensating the reception times.Type: GrantFiled: July 25, 2001Date of Patent: September 5, 2006Assignee: AlcatelInventor: Giovanni Traverso
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Patent number: 7095752Abstract: In an integrated circuit, a data traffic router includes a number of multiplexors and a controller, coupled to each other, and to subsystems of the IC. The subsystems selectively output to each other. The data traffic router selectively configures itself to provide paths for the outputs to reach their destinations, to facilitate concurrent communications between selected combinations of the subsystems.Type: GrantFiled: February 28, 2002Date of Patent: August 22, 2006Assignee: PMC-Sierra, Inc.Inventors: George Apostol, Jr., Mahadev S. Kolluru, Tom Vu
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Patent number: 7079555Abstract: An integrated digital loop carrier (IDLC) system includes digital line feeders and signal processors to interface with the feeders an to ultimately provide data to subscriber instruments. The system can be employed as a central office terminal (COT) or remote digital terminal (RDT) with analog, T1 or SONET feeders and any conventional link medium. Data are put in DS1 format and multiplexed onto token ring optical loops for delivery to banks of channel units wherein the optical signals are translated to electrical signals for delivery to the Cus and subscribers. A method and apparatus is provided for mapping and demapping signals between virtual tributaries (VT) and digital signal formats in the RDT of an integrated digital loop carrier.Type: GrantFiled: November 5, 2001Date of Patent: July 18, 2006Assignee: Pulse Communications, Inc.Inventors: Ertugrul Baydar, J. Bradley Boudreaux, Nicholas Carter, Chung Chen, Steven Klonsky, Michael Moran, Peter Renucci, Jeffrey Timbs, Thomas Tucker, Waleed Wardak
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Patent number: 7061930Abstract: A demultiplexer is provided with a PID extractor for extracting a PID of each TS packet from an inputted transport stream; a PID comparator for detecting whether or not the extracted PID matches any of PIDs which are set on a PID table, and outputting an entry number of the PID table where the corresponding PID is set, as a matching PID entry number, when a match is detected; a packet selector for selecting TS packets whose PIDs are detected by the PID comparator; and a data storage controller for determining an area in a memory where each TS packet is to be stored, according to the matching PID entry number; wherein TS packets having different PIDs are multiplexed and stored into a video data storage area in the memory. Therefore, when plural kinds of video data are included in the same program on digital broadcasting, these plural kinds of video data can be reproduced simultaneously.Type: GrantFiled: October 10, 2001Date of Patent: June 13, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Norihiko Mizobata
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Patent number: 7046701Abstract: A composite signal has two components, each carrying a stream of information that may be digital. In one application of a method according to an embodiment of the invention, at least one of the components is delayed such that a time relation between the streams of information is altered. The components are transferred via a common signal path such that upon transfer, the original time relation between the streams of information may be restored.Type: GrantFiled: October 9, 2001Date of Patent: May 16, 2006Assignee: Qualcomm Inc.Inventors: Mohammad J. Mohseni, Brian K. Butler, Deepu John, Haitao Zhang
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Patent number: 7023809Abstract: The present invention relates to a computer network and a method for using the network The network and method employ powered multiplexing connection devices which electronically couple two or more network devices to the network. The signals from the network devices to the network are multiplexed at the powered multiplexing connection devices and the signals from the network to the network devices are demultiplexed at the powered multiplexing connection devices. The multiplexing enables the various work-center devices to communicate with the network and, in some cases, to receive power over the network connection. The intelligent electronic circuitry is also capable of aiding in network security and management and in monitoring the status of the network infrastructure.Type: GrantFiled: August 3, 2001Date of Patent: April 4, 2006Assignee: 3Com CorporationInventors: Alan Rubinstein, Gary Wang
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Patent number: 6965561Abstract: A terminal multiplexer structure comprising a plurality of line interface cards and a plurality of trunk interface cards wherein each of the line interface cards is connected to at least two of the trunk interface cards and comprises a switch for switching the connection transmission from the line interface board between the two trunk interface cards.Type: GrantFiled: November 10, 2000Date of Patent: November 15, 2005Assignees: Redfern Braodband Networks, Inc., Redfern Broadband Networks PTY Ltd.Inventors: Ross Halgren, Malcolm Cox
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Patent number: 6920154Abstract: A data optimization engine disposed inline with a first communication channel and a second communication channel. The data optimization engine comprises a transmit interface circuit configured to receive a first data stream from the first communication channel and to obtain a first data file from the first data stream. The data optimization engine further includes an optimization processor coupled to the transmit interface circuit for receiving a second data file from the transmit interface circuit. The second data file represents the first data file after the first data file has been processed by the transmit interface circuit into a format suitable for optimization by the optimization processor. The optimization processor performs one of a compression and an encryption on the second data file, thereby obtaining all optimized data file. In one embodiment, the first data file is a Fiber Channel data frame.Type: GrantFiled: December 17, 2001Date of Patent: July 19, 2005Assignee: Supergate Technology USA, Inc.Inventor: Isaac Achler
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Patent number: 6917630Abstract: A method of transmitting OSI layer 2 datacoms data by direct incorporation into a plurality of synchronous digital hierarchy virtual containers is disclosed, in which a higher bit rate OSI layer 2 data frame is multiplexed into a plurality of lower bit rate SDH (or SONET) virtual containers, which are transmitted simultaneously and in parallel over a synchronous communications network. The plurality of virtual containers are virtually concatenated by association of the payloads of the plurality of virtual containers. Re-assembly of the OSI layer 2 data frames from a plurality of virtually concatenated VCs is achieved by storing each received VC payload corresponding to an OSI layer 2 data frame in a corresponding respective memory location, and alternately reading interleaved bytes from the plurality of payloads under control of a plurality of read pointers.Type: GrantFiled: October 6, 1998Date of Patent: July 12, 2005Assignee: Nortel Networks LimitedInventors: John Paul Russell, Christopher David Murton, David Michael Goodman, Christopher Thomas William Ramsden
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Patent number: 6798762Abstract: In a digital wireless communication system wireless communication stations or radio base stations constitute frames to be conveyed over an air-interface for simultaneously comprising full rate speech data and dedicated user data. A speech coder in the digital wireless communication system generates the speech data while operating at a full rate. A user data application in the digital wireless communication system generates the dedicated user data. The system can set different service configurations supporting simultaneous transmission of speech data and dedicated user data, and can also include signaling data in the frames.Type: GrantFiled: July 20, 1998Date of Patent: September 28, 2004Assignee: Agere Systems Inc.Inventor: John W. Olson
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Patent number: 6798769Abstract: High-speed data transfer rates are provided between a central office and customer premise equipment with a multiplexer that is interposed between the central office and the customer premise equipment, and that functions as a remote access node. The multiplexer communicates at high data rates via downstream data links such as twisted-pair conductors between the multiplexer and the customer premise equipment. By positioning the multiplexer physically close to the customer premise equipment, DSL data rates can be achieved. In one application, the multiplexer assigns a variable number of the upstream data links between the central office and the multiplexer on a dynamic, adaptive, and automatic basis to individual ones of the downstream data links. In this way, unused data link capacity of the upstream data links is used to provide high data transmission rates when required between the multiplexer and the central office.Type: GrantFiled: September 13, 2001Date of Patent: September 28, 2004Assignee: Pedestal Networks, Inc.Inventor: P. Michael Farmwald
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Patent number: 6775304Abstract: A multi-channel superconducting digital router/signal processor (28) for processing and conditioning an analog input signal (12) and converting it to a digital output signal (26). The digital router/signal processor (28) includes a plurality of bandpass filters (11), a plurality of voltage control pulse generators (14), a plurality of pulse splitters (30), a plurality of pulse gates (20), a plurality of pulse combiners (32), a plurality of multiply-accumulator circuits (24), and a digital processing unit (36). The multiply-accumulator circuit (24) can be programmed to any octave of the analog input signal (12). This multi-channel implementation approach provides many conversion functions in a single assembly and is easily scaleable and configurable to meet a wide range of system requirements without having to go through new design/manufacturing cycles.Type: GrantFiled: November 13, 2000Date of Patent: August 10, 2004Assignee: Northrop Grumman CorporationInventor: Kiet D. Ngo
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Publication number: 20040136408Abstract: In order to effectively use a band and securely transmit emergency information such as information of disasters because such information needs to be securely provided to a user most preferentially via a digital broadcasting receiver held by the user even when the user is outside, digital data is multiplexed on the basis of transmission volume of the digital data, and data type, priority and data effective time as attributes of the digital data, and the multiplexed digital data is transmitted.Type: ApplicationFiled: May 29, 2003Publication date: July 15, 2004Applicant: Hitachi, Ltd.Inventors: Osamu Tomobe, Takaharu Ishida
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Patent number: 6744788Abstract: Data transmission apparatus for multiplexing one or more channel data streams of equal, predetermined, data rate into a transmission data stream comprises: means for generating a control data stream of the same data rate as the channel data rate, in which first periodically repeating portions of the control data stream provide a synchronisation signal and second periodically repeating portions of the control data stream provide identification data specifying information about the channel data streams with reference to a predetermined ordering of the channel data streams; and means for multiplexing the control data stream with the one or more channel data streams in a cyclic pattern of equally-sized data portions so that a data portion from the control data stream is followed by data portions from each of the channel data streams according to the predetermined ordering of channel data streams.Type: GrantFiled: September 21, 1999Date of Patent: June 1, 2004Assignee: Sony United Kingdom LimitedInventor: Peter Charles Eastty
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Publication number: 20040095965Abstract: Wires that carry bits of an instruction syllable of an instruction bundle are routed to first and second branch execution units. The wires are routed over the first branch execution unit. When the first branch execution unit is configured to calculate a branch target of a long IP-relative branch instruction occupying multiple syllables of an instruction bundle, the wires are coupled to the first branch execution unit. Otherwise, the wires are not coupled to the first branch execution unit.Type: ApplicationFiled: October 21, 2003Publication date: May 20, 2004Inventors: James E. McCormick, Stephen R. Undy, Donald Charles Soltis
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Publication number: 20040081208Abstract: A circuit for control and observation of a scan chain. The circuit comprises a group of first scan cells connected in series, receiving a first data signal and outputting a second data signal, a multiplexer receiving the first and second data signal, and selectively outputting the first and second data signal in response to a selection signal, and a group of second scan cells connected in series, receiving the first or second data signal from the multiplexer, and outputting a third data signal.Type: ApplicationFiled: October 29, 2002Publication date: April 29, 2004Inventor: Huan-Yung Tseng
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Publication number: 20040027993Abstract: A bit stream multiplexer includes an input ordering block, a plurality of multiplexers, an output ordering block, and a loop back circuitry. A bit stream demultiplexer includes an input ordering block, a plurality of demultiplexers, and an output ordering block. During testing, the transmit multiplexing integrated circuit and the receive demultiplexing integrated circuit are coupled into a circuit tester. Then, a plurality of input lines of the transmit multiplexing integrated circuit are coupled to a plurality of output data lines of the circuit tester. A loop back output of the transmit multiplexing integrated circuit is then coupled to a loop back input of the receive demultiplexing integrated circuit. A plurality of output lines of the receive demultiplexing integrated circuit are coupled to a plurality of input data lines of the circuit tester.Type: ApplicationFiled: March 17, 2003Publication date: February 12, 2004Applicant: Broadcom Corporation a, California CorporationInventors: Ali Ghiasi, Bo Zhang
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Publication number: 20040017832Abstract: Basis element for a multiplexer structure and corresponding multiplexer structure.Type: ApplicationFiled: July 11, 2003Publication date: January 29, 2004Inventor: Thomas Glos
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Patent number: RE41417Abstract: A method of transmitting OSI layer 2 datacoms data by direct incorporation into a plurality of synchronous digital hierarchy virtual containers is disclosed, in which a higher bit rate OSI layer 2 data frame is multiplexed into a plurality of lower bit rate SDH (or SONET) virtual containers, which are transmitted simultaneously and in parallel over a synchronous communications network. The plurality of virtual containers are virtually concatenated by association of the payloads of the plurality of virtual containers. Re-assembly of the OSI layer 2 data frames from a plurality of virtually concatenated VCs is achieved by storing each received VC payload corresponding to an OSI layer 2 data frame in a corresponding respective memory location, and alternately reading interleaved bytes from the plurality of payloads under control of a plurality of read pointers.Type: GrantFiled: October 24, 2005Date of Patent: July 6, 2010Assignee: Nortel Networks LimitedInventors: John Paul Russell, Christopher David Murton, David Michael Goodman, Christopher Thomas William Ramsden, James Shields