Patents Examined by Melissa Kay Carman
  • Patent number: 5999525
    Abstract: Telephone calls, data and other multimedia information including video, audio and data is routed through a switched network which includes transfer of information across the internet. Users can transmit video, audio and data communications of designated quality over the internet to other registered video telephony users. Users can manage more aspects of a network than previously possible, and control network activities from a central site.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: December 7, 1999
    Assignee: MCI Communications Corporation
    Inventors: Sridhar Krishnaswamy, Isaac K. Elliott, Tim E. Reynolds, Glen A. Forgy, Erin M. Solbrig
  • Patent number: 5978387
    Abstract: A system and method for dynamically provisioning digital data services. Connection setup for the digital data services is accomplished through messages transported on a common channel signaling network. These messages permit an originating user to automatically provision a data communications connection that has a dynamically adjustable bandwidth.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: November 2, 1999
    Assignee: MCI Communications Corporation
    Inventor: Frederick A. Sherman
  • Patent number: 5949794
    Abstract: The invention relates to a control signal for receivers, said control signal being formed by juxtaposing two signal elements of equal duration, and time symmetrical. For example, the signal comprises at least one first pseudo-random noise digital sequence s(N.sub.s -1) to s(0) and, periodically, at least one second digital sequence s(N.sub.s -1) to s(0), corresponding to the inverse, obtained by time symmetry, of said first sequence. The signal may be used in particular for performing time and frequency synchronization on receivers and/or for equalizing signals received by said receivers. The invention also relates to methods and apparatuses that use said signal.
    Type: Grant
    Filed: June 20, 1995
    Date of Patent: September 7, 1999
    Assignee: Alcatel Mobile Communication France
    Inventor: Alain Chiodini
  • Patent number: 5936945
    Abstract: A teleconference terminal equipment adapted to construct an AV meeting system as an intended use, comprising a network interface and communications control apparatus, a multimedia multiplexing/demultiplexing and interterminal signal control unit which multiplexes and demultiplexes video data and control data contained in a communication frame to be transmitted by the control apparatus and a communication frame received by the same, respectively, a video codec which codes and decodes motion picture data, a video input/output interface which connects an external camera to the video codec, a camera control/external device multiconnector, a CPU which controls an operation of the external camera through the multiconnector on the basis of control data delivered from the control unit, and a box-shaped housing with an adjustable supporter to house the communication control apparatus, video codec, and camera.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: August 10, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Yoji Shibata, Masaaki Takizawa, Hitoshi Matsushima, Kiyoshi Ishida, Atsuo Yoshida, Atsushi Ishibashi, Takehiko Yamada
  • Patent number: 5930245
    Abstract: A radio telephone apparatus for performing space diversity reception to communicate with base stations in a TDMA radio communication system under an operating condition in which a frame period containing a signal transmission period, a signal reception period and a base station observation period is provided, which comprises first and second antennas for signal transmission in the signal transmission period, the space diversity reception prior to each of the signal reception period and the base station observation period and signal reception in each of the signal reception period and the base station observation period, and an antenna selector operative to select one of the first and second antennas in accordance with space diversity technique to be used for receiving a data signal from a specific base station in the signal reception period and to select further one of the first and second antennas in accordance with space diversity technique to be used for receiving a data signal from one of base stations ot
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: July 27, 1999
    Assignee: Sony Corporation
    Inventors: Seijiro Ishizuka, Kazuto Kitakubo
  • Patent number: 5905736
    Abstract: A method for performing centralized billing for transactions conducted over the Internet between a user and an Internet Service Provider (ISP) (106) through an Internet Access Provider (IAP) (104) is disclosed. Upon connection of the user's terminal (101) to the IAP, the IAP transmits to a billing platform (108) a message that associates the user's identity and the temporary Internet Protocol (IP) address that is assigned by the IAP to the user's session for use by to that user's terminal. In response to a chargeable transaction with an ISP, the ISP transmits to the billing platform the IP address of the user making the transaction and the charge for the transaction. The charges for all such transactions are accumulated by a transaction server (109) and stored in an account on an associated database (110) identified with the IP address of the requesting terminal.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: May 18, 1999
    Assignee: AT&T Corp
    Inventors: Yzhak Ronen, Silvio Tavares
  • Patent number: 5892770
    Abstract: A first data stream for a first data transmission system having a first data rate contains ATM data cells and structural data, which are distributed as spaced apart data in accordance with a specified instruction and are assigned to a section including in each case a plurality of ATM data cells. While retaining its ATM data cell format, the first data stream is converted into a second data stream containing only ATM data cells for a second data transmission system having a second data rate which is higher than the first data rate. The structural data are thereby selected (or picked out) from the first data stream and are input into a marked structural cell having the ATM cell format, for the section. The structural cell is inserted into the second data stream to partially fill an unoccupied section resulting from the differing data rates.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: April 6, 1999
    Assignee: Tektronix, Inc.
    Inventors: Andreas Wolf, Hans-Werner Arweiler
  • Patent number: 5889782
    Abstract: The present invention is a system and method for transmitting proprietary parameters in a telecommunications network conforming to the ANSI SS7 ISUP Standard. The method includes the steps of identifying proprietary parameters to be transmitted as part of an ISUP SS7 signaling message that includes a network specific Generic Digits parameter and encapsulating those parameters within the network specific Generic Digits parameter.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: March 30, 1999
    Assignee: MCI WORLDCOM, Inc.
    Inventor: Ranga R. Dendi
  • Patent number: 5881060
    Abstract: An integrated voice and packet data telecommunications system has at least one dual mode channel. The system comprises a plurality of transceivers, at least one transceiver being operable to transmit and receive voice traffic on the dual mode channel, and at least one transceiver being operable to transmit and receive packet data traffic on the dual mode channel. The system further comprises a controller for controlling the transceivers so as to allocate the dual mode channel either to voice communications or to packet data communications. The controller responds to changing demand for voice channels and packet data channels by changing dynamically the allocation of the dual mode channel. The system is particularly useful for providing Cellular Digital Packet Data (CDPD) services.
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: March 9, 1999
    Assignee: Northern Telecom Limited
    Inventors: Glenn Charles Morrow, Emad Abdel-Lateef Qaddoura, Charles James Derrick, Kenneth W. Pecot, Nivedan Thadasina, Nikhil Jain, Patricia Ann Landgren, Bradley A. Fink
  • Patent number: 5872782
    Abstract: The present invention is a system and method for transmitting proprietary parameters in a telecommunications network conforming to the ISUP Standard. The method includes the steps of identifying proprietary parameters to be transmitted as part of an ISUP signaling message that includes a network specific Generic Digits parameter and encapsulating those parameters within the network specific Generic Digits parameter.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: February 16, 1999
    Assignee: MCIWorldCom, Inc.
    Inventor: Ranga R. Dendi
  • Patent number: 5867495
    Abstract: Telephone calls, data and other multimedia information is routed through a hybrid network which includes transfer of information across the internet utilizing telephony routing information and internet protocol address information. A media order entry captures complete user profile information for a user. This profile information is utilized by the system throughout the media experience for routing, billing, monitoring, reporting and other media control functions. Users can manage more aspects of a network than previously possible, and control network activities from a central site. Calling card access is provided for users and supports typical calls as well as media transfers over the hybrid network including over the internet.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: February 2, 1999
    Assignee: MCI Communications Corporations
    Inventors: Isaac K. Elliott, Sridhar Krishnaswamy
  • Patent number: 5867494
    Abstract: Telephone calls, data and other multimedia information including video, audio and data is routed through a switched network which includes transfer of information across the internet. Users can participate in video conference calls in which each participant can simultaneously view the video from each other participant and hear the mixed audio from all participants. Users can also share data and documents with other video conference participants. Users can manage more aspects of a network than previously possible, and control network activities from a central site. Billing of the conference call is accomplished utilizing a billing detail record to capture events associated with a call as they occur and debit the appropriate bill.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: February 2, 1999
    Assignee: MCI Communication Corporation
    Inventors: Sridhar Krishnaswamy, Isaac K. Elliott, Tim E. Reynolds, Glen A. Forgy, Erin M. Solbrig
  • Patent number: 5862134
    Abstract: An integrated network for connecting both telephones and personal computers within an organization, using a single wiring connection is disclosed. Telephones and personal computers within the organization are connected to the same local area network (LAN) which is in turn connected to a telephony-computer interface (TCI). The TCI is also connected to telephone lines. The TCI forms an interface between telephone line communications and data packets for real time communications. In this way, only one wiring connection, the local area network, need be installed to interconnect both telephones and personal computers, for both local and off-site communications.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: January 19, 1999
    Assignee: GTE Laboratories Incorporated
    Inventor: Shuang Deng
  • Patent number: 5854790
    Abstract: A network (10) includes several local networks (32, 34, 36). Each local network (32, 34, 36) includes a repeater (12, 16, 20) coupled to data devices (14, 18, 22). The combination of the repeater (12, 16, 20) and the data devices (14, 18, 22) form a collision domain for managing communications within the local network (32, 34, 36). Uplink modules (40, 44) manage communications between the local networks (32, 34, 36) by isolating collision domains and generating collision indications when messages cannot be transmitted. The uplink modules (40, 44) may also implement bridging, routing, or filtering capabilities that inhibit transmission of an intra-network message beyond its local network (32, 34, 36).
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: December 29, 1998
    Assignee: Compaq Computer Corp.
    Inventors: Craig M. Scott, Li Tung Wang, Arthur T. Bennett, Ahmad Nouri
  • Patent number: 5854786
    Abstract: A packet switching architecture provides for a switch system comprised of a cellular base station in communication with the PSTN through a switch. Data packets are routed through the switch system as necessary to effect communication between the public switched telephone network (PSTN) and mobile radiotelephones disposed within the cellular coverage area surrounding the base station. A packet interconnection subsystem operates to transfer data packets between a plurality of interface ports, to which are coupled a corresponding plurality of signal lines. Within the interconnection subsystem, one or more distribution/consolidation (DISCO) interface units are mutually coupled together through a central router unit. Each DISCO interface unit is configured to consolidate the data packets received through at least two signal ports onto a consolidation bus, as well as to distribute the addressed data packets from a distribution bus to two or more of ports.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: December 29, 1998
    Assignee: QUALCOMM Incorporated
    Inventors: Eric L. Henderson, Houtan Dehesh, Farrokh Khatibi, Richard Larson, Todd R. Sutton, Lindsay A. Weaver, Jr., Kendrick Hoy Leong Yuen
  • Patent number: 5850397
    Abstract: A method for determining the topology of a mixed-media network is provided. According to the method, the network is divided into communities of devices that support a common topology mechanism ("spheres"). On each sphere, one or more sphere topology agents generate and accumulate topology data for the devices on the sphere using the topology mechanism that is supported by the devices within the sphere. A global topology agent collects the topology data for each sphere from the various sphere agents and assembles the data to determine the global topology of the mixed-media network. The global topology agent begins by collecting data from a current sphere and identifies additional spheres based on data stored in boundary devices within the current sphere. The global topology agent then repeats the same process with the additional spheres until topology data has been collected from all of the spheres in the mixed-media network.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: December 15, 1998
    Assignee: Bay Networks, Inc.
    Inventors: Ilan Raab, Nam N. Nguyen, Ai-Lan Chang, Gilbert D. Ho, Guruprasad S. Hadagali
  • Patent number: 5844893
    Abstract: Improved apparatus for a radio communication system having a multiplicity of mobile transceiver units selectively in communication with a plurality of base transceiver units which communicate with one or two host computers for storage and manipulation of data collected by bar code scanners or other collection means associated with the mobile transceiver units. A network controller provides selective interface means to be employed between the host computers and the base transceivers whereby low data rate base transceivers may be utilized with the network controller while spread spectrum or high data rate networked base transceivers may be also utilized. The network controller may allow selection of interface means for three of its ports from its front panel with use of three input keys. The network controller is entirely external to the host computer or computers, and can couple to a variety of commonly encountered host ports.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 1, 1998
    Assignee: Norand Corporation
    Inventors: Charles D. Gollnick, Ronald E. Luse, John G. Pavek, Marvin L. Sojka, James D. Cnossen, Robert G. Geers, Arvin D. Danielson, Mary L. Detweiler, Gary N. Spiess, Guy J. West, Amos D. Young, Keith K. Cargin, Jr., Richard C. Arensdorf, Ronald L. Mahany
  • Patent number: 5838665
    Abstract: An Internet/telephone adaptor device to link a regular telephone call with an Internet call without requiring software that is specific to each proprietary encoding scheme. The device is designed to operate with a data network terminal haling audio/data conversion means for reversibly converting voice signals to a data format for telephone-like communication over a data network. In a preferred embodiment, the adaptor device is provided as an add-on accessory to existing computer terminals having a sound card, making them capable of handling Internet calls. The adaptor is connected both to the computer and to the telephone line, enabling linkage of regular and Internet calls. With the adaptor device, a user can easily arrange conference calls between Internet users and telephone line users. A hold call feature is also provided to simplify user handling of calls.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: November 17, 1998
    Assignee: Integrated Technology, Inc.
    Inventors: Simon M. Kahn, Alan P. Haber
  • Patent number: 5818825
    Abstract: A method and apparatus in a communications system (100) for providing communications units (134) access to the communications system (100). The communications system (100) includes a cable distribution network (106) with a base communications unit (102) and a number of downstream communications units (134) all connected to the cable distribution network (106). A plurality of channels are used to transmit data between the base communications unit (102) and the downstream communications units (134). A first set of channels are used primarily for access to the communications system (100) and a second set of channels are used for transmitting data within the communications system (100) after access to the communications system (100) has been gained. The base communications unit (102) sends a first type of data transmission including an identification of access channels used for requesting access to the communications system (100).
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: October 6, 1998
    Assignee: Motorola, Inc.
    Inventors: Richard Corrigan, Bruce D. Mueller, Timothy M. Burke
  • Patent number: 5818836
    Abstract: An anonymous telephone communication system. The system includes an anonymous voice system which can establish an anonymous telephone communication through a circuit switched network (CSN). In operation, two parties place separate telephone calls to the anonymous voice system through the CSN. The parties then enter matchcodes through their telephone keypads. The anonymous voice system compares the matchcodes entered by the parties and connects the telephone calls if the matchcodes match. The system may include an on-line data service that establishes electronic communication between the parties through corresponding data terminals. The data terminals may have resident anonymous voice input commands that can be selected by the parties. The on-line data service transmits a connect command to the anonymous voice system which dials the two parties, or waits for the parties to dial the system, and then connects the parties.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: October 6, 1998
    Inventor: Stephen C. DuVal