U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Pham, Chi


Primary examiner statistics: 5442 patents; average approval time: 5440 days
Assistant examiner statistics: 553 patents; average approval time: 554 days

Patents as Primary Examiner

          11            
NumberTitleIssue Date
7424031Local area network of serial intelligent cells
A serial intelligent cell (SIC) and a connection topology for local area networks using Electrically-conducting media. A local area network can be configured from a plurality of SIC's interconnected so that all communications between two adjacent SIC's is both point...
09/09/2008
7424033Network address translation router for voice internet protocol system
A network address translation (NAT) router for connecting an inside network to an outside network. The inside network uses local addresses and has a plurality of voice over Internet protocol (VoIP) systems and a plurality of hosts, and the outside network uses globa...
09/09/2008
7423982Adaptive communication modes
Systems and methods for implementing a communication mode for a communication terminal are provided. An embodiment of a method for implementing a communication mode includes receiving a message from a remotely located network control system and implementing one of a...
09/09/2008
7420975Method and apparatus for a high-speed frame tagger
In one embodiment, the invention is an apparatus. The apparatus includes a network processor interface suitable for coupling to a network processor. The apparatus further includes a central processor interface suitable for coupling to a central processor. The appara...
09/02/2008
7420939Methods and apparatus of power control in wireless communication systems
The present invention involves apparatus and methods to perform wireless terminal transmission power control. The invention uses novel and highly efficient methods to: convey power control information, specify power control level adjustments, recognize power control...
09/02/2008
7420951Packet-switched communications in a mobile network
A mobile communications system includes a system controller and cell sites having base station systems. The network between the system controller and the base station systems is a packet-switched network, such as an Internet Protocol (IP) network. In one embodiment,...
09/02/2008
7420959Telephone apparatus used for computer network telephone system
A telephone apparatus connectable to a computer network through a telephone network to transmit data including audio signals via a server of said computer network includes: a first telephone set including a first audio input/output means for converting input voice i...
09/02/2008
7420926Method and apparatus for providing integral cell payload integrity verification and detecting defective modules in telecommunication devices
A method for identifying faulty modules within telecommunication devices, such as ATM switches, involves generating and attaching verification codes, such as a CRC or checksum codes, to data packets at an upstream location determining the integrity of the verificati...
09/02/2008
7417975Cellular system and base station specification method in CDMA mode
To provide a cellular system for enhancing precision of judgement by rendering the number of code words to be judgement candidates at a base station as small as possible and thus improving the efficiency of using the code words. A base station control unit no...
08/26/2008
7417956Wireless communication system which improves reliability and throughput of communication and retransmission timeout determining method used for the same
A wireless communication system includes a mobile terminal, a base station apparatus, a data relay apparatus and a server apparatus. One of the mobile terminal, the base station apparatus, the data relay apparatus and the server apparatus includes a transmitting uni...
08/26/2008
7417986Shared buffer switch interface
A system and method for using a single shared buffer to service multiple destinations for a telecommunications switch is disclosed. Upon receiving a cell of data to be sent to a destination, an interface stores the cell in a shared buffer. The address of the cell in...
08/26/2008
7418006Virtual endpoints
Disclosed is an architecture for automating testing tasks, which would otherwise have to be done manually using actual hardware, by providing the capability to dynamically create many types of networked computing devices with different network configurations, elimin...
08/26/2008
7417954Method and apparatus for using histograms to product data summaries
A system and method are provided for summarizing dynamic data from distributed sources through the use of histograms. In particular, the method comprises receiving a first data signal at a first location, determining a first array sketch of the first data signal, an...
08/26/2008
7417977Apparatus and method for a telephony gateway
A system for connecting a circuit network with a packet network. The system includes a packet switch fabric, a circuit network server, and a packet network server. The circuit network server has a first and second port. The first port of the circuit network server s...
08/26/2008
7415035Device driver access method into a virtualized network interface
A method for providing access to a network interface having a plurality of memory access channels is disclosed. The network interface provides access to a plurality of processing entities. The method includes providing a network interface software hierarchy wherein ...
08/19/2008
7414962OFDM diversity transmission
In an OFDM transmission a transmission diversity technique is used without orthogonal signaling. The phases of the subcarriers received at the different antennas are compared by different techniques and then the phases of the signals for different antennas are adjus...
08/19/2008
7414971Method and apparatus for rate matching in a telecommunications system
A method converts an input data rate associated with N units of data to an output data rate associated with M units of data. The method includes calculating N write-control parameters each associated with one of M addresses of an output memory, directing each of N v...
08/19/2008
7415045Method and a system for transferring AMR signaling frames on halfrate channels
The present invention relates to the transference of signaling frames on GERAN (GSM/EDGE radio Access Network) half rate channels utilizing a modulation scheme carrying n bits in one symbol. In order to be able to utilize the existing channel coding developed for ch...
08/19/2008
7415029Programmable FSM engine using a new CAS application language
An apparatus including a private branch exchange (PBX) switch, a residential gateway to receive channel associated signals (CAS) from the PBX switch, and a programmable CAS module to convert the CAS signals into internet protocol (IP) signals is disclosed. ...
08/19/2008
7414980Interference estimation for interference excision with low computational complexity
The present invention is a method and system for estimating interference. Packet characteristics of relevant packets within the channel at a given point in time may be processed. For example, a power level, occupied frequency and corresponding time references may be...
08/19/2008
7415040Method for transmitting signals in mobile communication system
A method for transmitting a signal of a medium access control sublayer in a mobile communication system which has mobile and base stations for providing a bearer service. A bearer service profile type is decided according to a bearer service combination type of the ...
08/19/2008
7415016Method and system for VMAN protocol Layer-2 packet nested encapsulation
A method and system is provided in which MAN traffic is segregated at a customer and a provider domain level. A switch at the edge of the MAN encapsulates a data packet in a new header, which is used to specify the customer domain tags. The data packet is encapsulat...
08/19/2008
7414985Link aggregation
A method and system for aggregating a plurality of parallel communications links transmitting data between adjacent nodes in a network is provided. The method simplifies network topology by replacing multiple parallel communications links between nodes in the networ...
08/19/2008
7414996Address autoconfiguration in ad hoc networks
The invention provides a system whereby a node can configure itself automatically with an address when it joins or establishes a network. Once the network is established, the nodes within that network exchange hello messages that are modified to give an indication o...
08/19/2008
7411982Digital wireless voice and data modem
Simultaneous transmission of voice and data over the voice channel of a digital wireless communications network, such as a “cell phone” network, is reconfigurable on the fly among multiple operating modes, including a lull detection mode in which data is transfe...
08/12/2008
7411906Method for optimizing frequency of clock signal and network switch using same
A method for optimizing frequency of a clock signal is provided for operations of a network switch. The network switch includes a clock signal generator for generating the clock signal, and a plurality of input/output ports for communicating therevia with at least o...
08/12/2008
7411912Method and apparatus for controlling traffic volume measurement validity in a universal mobile telecommunications system
The details of an apparatus and method are disclosed for ensuring that a traffic volume measurement message does not have a validity of CELL_DCH when the user equipment in a UMTS communications system is in CELL_FACH state. The validity is set to other than CELL_DCH...
08/12/2008
7411899Apparatus and method for allocating walsh codes to access terminals in an adaptive antenna array CDMA wireless network
An apparatus having: 1) a database for storing R active wireless terminal records, each of the R active wireless terminal records containing: a) an active orthogonal code and b) corresponding downlink beamforming coefficients used to communicate with one of the wire...
08/12/2008
7411902Method and system for maintaining partial order of packets
A method and system for maintaining partial order of packets in packet processing modules is described. The system includes a memory and a plurality of packet processing modules to process packets that are part of a sequence in order. The memory stores a plurality o...
08/12/2008
7411975Multimedia over internet protocol border controller for network-based virtual private networks
A method for communicating packet multimedia data between a source endpoint and a destination endpoint is disclosed, wherein at least the source endpoint is within a virtual private network, and comprises the steps of receiving, at a signaling controller, a first si...
08/12/2008
7411972Link layer device with non-linear polling of multiple physical layer device ports
In a communication system comprising a link layer device connectable to one or more physical layer devices, at least a given one of a plurality of ports of the one or more physical layer devices is designated as a port for which status information is to be requested...
08/12/2008
7411971Systems and methods for the schedule alignment of packet flow
A classification mechanism automatically aligns time-sensitive data streams to sequences (schedules), according to information in the packets or other information and classification criteria specified by a human network administrator, a sequence agent, an applicatio...
08/12/2008
7411941Text telephone modem communications over packet networks
A modem detection method is provided for use by a first gateway, the first gateway capable of communicating with a second gateway over a packet network. The method comprises setting the first gateway to a voice mode having a first coding scheme, encoding an input si...
08/12/2008
7408930Address learning to enable high speed routing table lookups
A switch includes multiple ports, a switching fabric, and a routing table module. The routing table module includes a multi-bank memory structure for maintaining routing information. The routing information enables the switching fabric to route packets between the p...
08/05/2008
7408900Method and system for automated determination of inter-system border thresholds
A method and system for determining thresholds for evaluating inter-system handovers in a wireless communication system includes determining a quality level of a first digital duplexing type, determining a quality level of a second digital duplexing type, and compar...
08/05/2008
7408915Communications terminal, a system and a method for internet/network telephony
A communication terminal for Internet telephony is provided that handles and control communication of data in accordance with a standardized network protocol and exchanges data with a connecting unit connected to the Internet where the resulting data exchanged betwe...
08/05/2008
7408916Synchronisation of frame transmissions in a telecommunications network
The invention concerns a method for synchronising clocks of base transceiver stations in a telecommunications system and a mobile communications system. According to the invention, in either some or in all base station sites of the telecommunications network a locat...
08/05/2008
7408940Use of precedence bits for quality of service
Certain bits of a packet, such as bits in the IP header of an IP packet, are used to designate the type of service or Quality of Service (QoS) level to be afforded to the packet as it passes through a data communications network. A user entitled to a certain QoS lev...
08/05/2008
7408926Method and apparatus for accessing voice over internet protocol connection
A service is provided through an apparatus operative under Internet Protocol (IP) as part of the Internet to handle packet switched voice traffic according to Session Initiation Protocol (SIP) to control incoming packet switched control traffic by fielding SIP contr...
08/05/2008
7408959Method and apparatus for ensuring cell ordering in large capacity switching systems and for synchronizing the arrival time of cells to a switch fabric
Where links between a port module and plural switch fabric slices are of various lengths, a cell is transmitted from the port module to a switch fabric slice in response to a grant. The transmission is delayed by an amount based on a link round trip delay (RTD) valu...
08/05/2008
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