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| Number | Title | Issue Date |
| 7835312 | Method and apparatus for updating label-switched paths A method of updating a label-switched path for forwarding data in a data communications network in response to a change in a network comprises the step, performed at an updating node of receiving notification of a network change, of constructing a post-change label-... | 11/16/2010 |
| 7376113 | Mechanism for securely extending a private network According to one embodiment of the invention, a method for securely extending a private network to include one or more remote access points (APs) comprises a first operation of establishing a secure communication path with a destination device. Then, the information... | 05/20/2008 |
| 7366411 | System and method for operating optical transponder The method for operating an optical transponder, which performs maintenance of a signal in the optical transponder having a digital wrapper in an optical transmission system including multiple layers, includes (a) calling a processor for processing an interrupt when... | 04/29/2008 |
| 7359726 | Push-to-talk signaling and media inter-working architecture An inter-working network for facilitating dispatch communications between subscribers of disparate dispatch networks includes core inter-working components and regional inter-working components. The core inter-working components include a network management system, ... | 04/15/2008 |
| 7328042 | Architecture for facilitating group sessions across dispatch operators An inter-working network facilitating group communications among subscribers spanning a plurality of disparate dispatch networks, a signaling controller, a media gateway, a system for facilitating the monetization of inter-carrier dispatch communications and a group... | 02/05/2008 |
| 7292785 | Optical transmission system constructing method and system An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the op... | 11/06/2007 |
| 7126956 | System to provide fractional bandwidth data communications services A system to provide fractional bandwidth data transmission includes a network processor, physical layer device, or link layer device {“data device”) and a plurality of link layer devices that are coupled to a plurality of input-output ports. The link layer devic... | 10/24/2006 |
| 7099622 | Controlling channel switching in a UMTS network In a UMTS Terrestrial Radio Access Network (UTRAN), a method of switching from a current common channel to a dedicated channel for a UE. The method comprises estimating the round trip delay for data packets travelling between the UE and a peer node with which the UE... | 08/29/2006 |
| 6952583 | Method for processing synchronous message in asynchronous mobile communication system A method for processing a synchronous message in an asynchronous mobile communication system including an asynchronous mobile station and an asynchronous radio network, comprises the steps of: when a synchronous core network is interlocked with the asynchronous radi... | 10/04/2005 |
| 6546427 | Streaming multimedia network with automatically switchable content sources A streaming multimedia communication network includes a broadcaster providing program content by air wave or direct line to a network service provider, e.g. an Internet Radio Service provider (IRSP) which operates a web site for distribution of the conten... | 04/08/2003 |
| 6215412 | All-node switch-an unclocked, unbuffered, asynchronous switching apparatus A new asynchronous approach used to quickly and dynamically switch input port connections to output port connections and to resolve contention. The switch is self-routing in two cycle times at the same high speed serial rate that data is transferred throu... | 04/10/2001 |
| 6023732 | Message transfer apparatus for controlling a message send in a packet switched interconnection network The present invention relates to a message-passing computer system and a packet-switched interconnection network. The message transfer apparatus in a packet-switched interconnection network includes a message send controller controlling a send procedure i... | 02/08/2000 |
| 5859856 | Method and apparatus for routing interleaved incoming ATM cells with reduced channel switching A number of storage units and a number of state machines are provided to reorder interleaved ATM data cells for a number of channels incoming to a networked host computer. The storage units store the incoming ATM data cells, a number of data structures tr... | 01/12/1999 |
| 5832305 | Multiple stage analog bi-directional selector utilizing coupled pairs of bi-polar junction transistors connected to pull-up resistors A multi-stage analog bi-directional selector which has a low input impedance and cost. The multi-stage analog bi-directional selector includes a plurality of analog switches including first and second bi-polar transistors coupled together at first and sec... | 11/03/1998 |
| 5787300 | Method and apparatus for interprocess communications in a database environment The present invention provides interprocess communication in a DBMS. The present invention provides the ability for these processes to communicate with other DBMS processes or processes external to the DBMS. A pipe is implemented as an object of the gener... | 07/28/1998 |
| 4786763 | Circuit arrangement for the transmission of data signals between subscriber terminals operating with different data transmission procedures A circuit for the transmission of data signals between subscriber terminals operating with different data transmission procedures is described. Data signals are transmitted between a subscriber terminal operating with a first transmission procedure and a ... | 11/22/1988 |
| 4716562 | Telephone system An information transfer system is described for use in a telephone system wherein full duplex digital signal bursts containing a plurality of different types of information are transmitted between a central office and selected locations outside the system... | 12/29/1987 |
| 4477695 | Microprocessor operated telecommunications interface for a terminal of an automatic teletypewriter switching service A microprocessor operated telecommunications interface for connection to a telecommunications line to provide transmission of data between a dedicated terminal of an automatic teletypewriter switching service of the type operating in one code and a data b... | 10/16/1984 |
| 4354261 | Circuit arrangement and method for multi-address switching operations A circuit arrangement for multi-address switching operations of digital encoded signals between a calling data terminal and a variety of called data terminals operating with different data transmission procedures is adapted for use with an electronic data... | 10/12/1982 |
| 4346259 | Low speed terminal interface for all-digital PABX An interface for synchronizing the output of standard asynchronous terminals with a PABX allows all terminals to operate asynchronously with respect to each other. The output from the I/O terminal, which comprises a binary data stream in an asynchronous c... | 08/24/1982 |
| 4330886 | Automatic telephone exchange system for both speech signals and data transfer Telephones are coupled with data terminal equipments through data lines. The data lines are used to transfer the terminal data between the data terminal equipments and the telephones. Speech signals are transferred between the telephones and a PCM telepho... | 05/18/1982 |
| 4304960 | Teleprinter private branch exchange In a teleprinter private branch exchange having a communications unit, to which teleprinter terminals are connected, a central unit and a storage unit, the load due to connections between the individual units on a bus connecting the individual units toget... | 12/08/1981 |
| 4144407 | Multiprocessor system for automatic switching of telegraphic lines A new, high capacity switching center for telegraphic lines which employs digital elements is herewith described. The system resembles a multiprocessor with hierarchical organization. The general coordinating functions of the system are carried out by a m... | 03/13/1979 |
| 4069392 | Dual speed full duplex data transmission A dual-speed, dual format full-duplex two-wire voiceband data transmission system provides automatic speed selection at the answering terminal responsive to a handshaking sequence which is compatible with existing systems operating at telegraph speeds. Ex... | 01/17/1978 |
| 4006302 | Switching arrangement for extending the receiver stop pulse length in time division multiplex transmission A switching arrangement for a data transmission system is described wherein the switching arrangement extends the receiver stop pulse length in time division multiplex transmissions of telegraph signals on a character frame basis. The character frame cont... | 02/01/1977 |
| 3989892 | Line concentrator for dealing with asynchronous and synchronous data signals in a common bit format for a time division data switching exchange A line concentrator for a time division data switching exchange. Asynchronous and synchronous data signals generated at asynchronous and synchronous data terminals are subjected to known multi-point and synchronous sampling to become a train of bit-multip... | 11/02/1976 |
| 3963871 | Analysis device for establishing the binary value of asynchronous data signals The present invention relates to an analysis device, for use in a transit exchange for transmission of asynchronous data signals with known character structure and known nominal signalling rate. The character structure comprises a start pulse and a number... | 06/15/1976 |
| 3943488 | Multiplex telemetering system A multiplex telemetering system for transmitting a group of data signals each representing a distinct analog value, over a common channel to a receiving terminal where the data signals are fed into respective sub-channels. The transmitter includes a commu... | 03/09/1976 |
| 3940562 | Transit exchange for time division multiplex asynchronous data The present invention relates to a transit exchange for the transmission of asynchronous data signals having a given character structure and data rate, with the aid of a control equipment, including a computer and a sampling device, which is common to a n... | 02/24/1976 |
| 3934093 | Transit exchange for asynchronous data with unknown structure The present invention relates to a transit exchange for the transmission of asynchronous data signals having an unknown character structure and data rate with the aid of a control equipment including a processor and a sampling device which is common to a ... | 01/20/1976 |
