| Patent Number |
Title Of Patent |
Date Issued |
| RE32777 |
Chemical vapor purification of fluorides |
November 1, 1988 |
| A chemical vapor purification process for the preparation of high purity metal fluorides using the thermodynamic separation of cations by formation of a gaseous-metal-containing compound, vapor transport, and fluorination is disclosed. |
| 6243465 |
Method of providing video programming nearly on demand |
June 5, 2001 |
| A method for providing video programming in a nearly on demand basis is disclosed. A video network includes a video server that operates several video recorders to simultaneously exhibit video performances or programs on a plurality of channels. The video server is controlled in real tim |
| 6185583 |
Parallel rule-based processing of forms |
February 6, 2001 |
| System and method for verifying data in forms. Each form has a corresponding one or more rule sets each with rules that designate a structure, format, or data type for fields in the form. The rule sets are verified in parallel. Rules within a rule set may also be verified in parallel |
| 6137470 |
Task manager and task support windows |
October 24, 2000 |
| The Task Manager Window is a computer software component used in real-time telecommunications network monitoring and maintenance. The Task Manager Window organizes and presents to a network operator, a user of a decision support system, task packages corresponding to events of possible c |
| 6128304 |
Network presence for a communications system operating over a computer network |
October 3, 2000 |
| A method and apparatus are implemented for providing traditional telecommunications service capabilities in a packet based computer network. The system and method of the present invention automatically provide such service capabilities in the event a terminal end-point is unavailable |
| 6115462 |
Method and apparatus for efficient call routing |
September 5, 2000 |
| A method and apparatus to calculate probabilistic routing parameters to more efficiently route telephone calls from an origin to one of a plurality of call centers. In particular, the rate of calls routed to each gate of each call center is measured for a previous time frame and used to |
| 6111561 |
Network status matrix |
August 29, 2000 |
| A computer system for displaying the status of network nodes and links in a large telecommunications network is disclosed. An Overview windowing panel consisting solely of cell bullets representing the connection status of a large number of nodes and links in a telecommunications network |
| 6108382 |
Method and system for transmission of video in an asynchronous transfer mode network |
August 22, 2000 |
| A method and system for transmitting a video stream in an asynchronous transfer mode (ATM) network comprises steps of encoding the video into an MPEG-2 variable bit rate video stream, shaping the encoded variable bit rate video stream to conform to the traffic contract parameters for a |
| 6097699 |
Method and system for monitoring broadband quality of services |
August 1, 2000 |
| A method and system for monitoring a first virtual circuit in an asynchronous transmission mode (ATM) network comprises the steps of establishing in the network a second virtual circuit with the same path and QoS parameters as the first virtual circuit, and monitoring the first virtu |
| 6090635 |
Method for forming a semiconductor device structure having a laser portion |
July 18, 2000 |
| A heterostructure device includes a ridge-waveguide laser monolithically integrated with a ridge-waveguide rear facet monitor (RFM). An integral V-groove etched directly into the device substrate enables passive alignment of an optical fiber to the active region of the laser. The layer |
| 6061357 |
Ethernet to ADSL adapter |
May 9, 2000 |
| An Ethernet ADSL adapter controls data communication between an Ethernet port and an ADSL modem connected to an ADSL channel. The adapter includes a first buffer for storing data packets received at the Ethernet port, a second buffer for storing data packets received from the ADSL modem |
| 6061331 |
Method and apparatus for estimating source-destination traffic in a packet-switched communicatio |
May 9, 2000 |
| A real-time process estimates the source-destination traffic matrix in a packet-switched communications network. The inputs for the process are a set of aggregate link traffic measurements and a set of source node traffic measurements. The process uses a novel and computationally eff |
| 6058136 |
System and method for PN offset index planning in a digital CDMA cellular network |
May 2, 2000 |
| A system optimally assigns pseudo-noise (PN) offsets in a cellular network that includes several sectors. The system sets parameters for the cellular network, determines potential interference between each of the sectors and mobile units in the cellular network based on the set parameter |
| 6049831 |
System for transmitting network-related information where requested network information is separ |
April 11, 2000 |
| Web pages retrieved by a browser core are translated into user interface component definitions and page information. The definitions and page information are transmitted to a user device which recomposes the definitions and page information into a format for presentation to a user on |
| 6038229 |
Tree switching with fast reconfiguration |
March 14, 2000 |
| This invention relates to the fast reconfiguration of tree switches. In particular, on-chip parallel control signals are time staggered so that they track the propagation of data or information bits. As a result, it is unnecessary to stop the flow of data bits from the data inputs to the |
| 6031896 |
Real-time voicemail monitoring and call control over the internet |
February 29, 2000 |
| A communication system that provides call connections and voice mail service to telephone devices. With this system, a called party has the ability to monitor and control an incoming voice mail message, made by a calling party, which is to be recorded onto a voice mail system. The sy |
| 6023458 |
Method and system for distributing subscriber services using wireless bidirectional broadband lo |
February 8, 2000 |
| A method and system for distributing subscriber services to a number of user locations in a broadband cellular network. A bidirectional antenna array located at a number of cell centers provides coverage over a wide service area by using wireless distribution loops. The cell centers |
| 6023339 |
One-dimensional active alignment of optical or opto-electronic devices on a substrate |
February 8, 2000 |
| The present invention involves a combination of active and passive optical or opto-electronic device alignment techniques. Passive alignment is used for two axial lateral directions and all three axial rotational directions (yaw, pitch and roll). In such passive alignment, only the subst |
| 6002934 |
Methods and apparatus for assigning frequencies in a cellular network |
December 14, 1999 |
| A method and computerized apparatus for assigning frequencies to a plurality of cells in a cellular network. Each cell requires a predetermined number of frequencies. The method includes generating a difficulty factor for each cell, wherein each cell's difficulty factor is based on a |
| 5999269 |
One-dimensional active alignment of optical or opto-electronic devices on a substrate |
December 7, 1999 |
| The present invention involves a combination of active and passive optical or opto-electronic device alignment techniques. Passive alignment is used for two axial lateral directions and all three axial rotational directions (yaw, pitch and roll). In such passive alignment, only the subst |
| 5991475 |
Tightly curved digital optical switches |
November 23, 1999 |
| An optical index switch including curved ridge waveguides. The cladding around the waveguides is selectively etched to produce tightly curved optical switches. |
| 5961605 |
Method and apparatus for acknowledging TCP data packets |
October 5, 1999 |
| A data communication network includes a network access unit for coupling one or more computer devices to the network. The network typically has asymmetric upstream and downstream data transmission rates. The network access device implements a method for acknowledging data packets. When a |
| 5960329 |
System and method for determining guard zone and guard bands in a digital cellular dual mode net |
September 28, 1999 |
| An interference analyzing system and method analyze interference in a dual mode system having a digital network overlaid on an analog network. The digital network includes portable units operating within digital cell sites; whereas, the analog network includes mobile units operating with |
| 5946675 |
Apparatus for machine learning |
August 31, 1999 |
| An apparatus is disclosed for machine learning of a pattern sequence which is derived from a plurality of inputs. The pattern sequence is predicted from learning rate parameters that are exponentially related to an incrementally calculated gain parameter for each input. The gain paramete |
| 5940754 |
Method of fault identification for multiplexed devices |
August 17, 1999 |
| A method for remotely detecting at a ground station failed multiplexors and radio transceivers in an airborne telephone system is disclosed. Usage activity of the devices is predicted using a normalized gaussian distribution. A three prong test examines actual usage activity of the m |
| 5937033 |
Telephone system diagnostic measurement system including a distant terminal drop test measuremen |
August 10, 1999 |
| In a telephone system wherein a number of distant terminals are each connected to a remote terminal and in which a number of remote terminals are each connected to a central office, a distant terminal includes a drop testing circuit for making sequential measurements on a plurality of |
| 5923756 |
Method for providing secure remote command execution over an insecure computer network |
July 13, 1999 |
| A method and apparatus is disclosed for enhancing the security of a message sent through a network server from a client computer to a destination server. A secure connection for receiving and transmitting data is established between the client computer and the network server. Using c |
| 5920802 |
System and method to improve power distribution in a coaxial cable amplifier |
July 6, 1999 |
| A video distribution system with an optical-to-radio frequency conversion device that can be configured to reduce the amount of insertion loss introduced into the system and the number of hardware connections needed for the system's operation. A jumper module replaces protection fuses |
| 5880863 |
Reconfigurable ring system for the transport of RF signals over optical fibers |
March 9, 1999 |
| A reconfigurable ring architecture for RF transport over fibers which eliminates the need for multiple pairs of fibers to serve multiple microcells and the need for backup communications lines as a result of system failure due to a fiber break. The ring architecture has a plurality o |
| 5872887 |
Personal video, and system and method of making same |
February 16, 1999 |
| A personal video involving activities of a subscriber at an amusement park, which includes personal segments recorded by a plurality of video cameras, environ segments separately recorded and interleaved between the personal segments, and text. The organization of certain segments of the |
| 5872787 |
Distributed switch buffer utilizing cascaded modular switch chips |
February 16, 1999 |
| A distributed switch buffer and method for switch buffer enlargement use standard switch chips as modules that are cascaded in multiples to provide arbitrarily large switch buffers for any number of inputs and outputs. Any type of packet switch chip may be used in any combination. A pack |
| 5862134 |
Single-wiring network for integrated voice and data communications |
January 19, 1999 |
| 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 |
| 5854699 |
Multiplexed subcarrier control in wavelength division multiplexed broadband networks |
December 29, 1998 |
| In a wavelength division multiplexed network having a plurality of nodes and having optical channels at wavelengths .lambda.i, where i=1 . . . N, for transmission of optical signals over optical interconnection means, control for informing the network of which nodes are transmitting at w |
| 5796795 |
Data transferring circuit which aligns clock and data |
August 18, 1998 |
| A network (10) includes a broadband customer service module (B-CSM) (20). The B-CSM (20) includes a plurality of feeder interface cards (FICs) (36) and optical line cards (OLCS) (38) which are coupled together through a midplane assembly (34) so that each FIC (36) couples to all OLCs (38 |
| 5793976 |
Method and apparatus for performance monitoring in electronic communications networks |
August 11, 1998 |
| Management packets are defined that are modified in the payload by each node along a virtual connection and are used to measure both end-to-end QoS and specific individual intermediate node performance parameters. Management packets are implemented by defining entirely new packets or by |
| 5787347 |
Method and apparatus for selecting a cellular system for communication with a cellular telephone |
July 28, 1998 |
| Methods and apparatus for selecting a system for communication with a personal station, such as a cellular telephone or a PCS station, in a roaming area. The personal station transmits a system access message to a default system. When the default system that receives the system access |
| 5774463 |
Switching matrix with contention arbitration |
June 30, 1998 |
| A switching matrix routes each received input to a unique output port. Each input specifies an output port as a destination. For each output port, a set of inputs contending for the output port is determined. A control for correctly routing selects an input from each set of contending in |
| 5764745 |
Apparatus and method for local number portability using nongeographic subscriber numbers |
June 9, 1998 |
| An apparatus and method for telecommunications network local number portability supports service provider portability, location portability, and service portability. A subscriber is assigned a nongeographic subscriber number that is uniquely mapped to a location-based geographic term |
| 5731699 |
Apparatus and method for simultaneous measuring of narrow and wideband RF transmission statistic |
March 24, 1998 |
| Apparatus and method for measuring the radio signal (RF) transmission statistics of a communication channel. The apparatus is arranged to receive and process a wide bandwidth signal from which signal power is measured and from which fading or other such transmission problems can be m |
| 5721833 |
Push-out of low priority signals from switch buffers |
February 24, 1998 |
| An apparatus and method for push-out of signals from switch buffers ensures that a high percentage of the highest priority input signals are accepted by the switch by using the switch resources to remove lower priority input signals from the switch buffer in order to accommodate higher p |
| 5673844 |
Gas pressure adjustable diebonding apparatus and method |
October 7, 1997 |
| A device placement or diebonding head for a diebonding apparatus including a chamber with openings in its end walls, a rod-and-piston combination extending through the chamber with the rod ends protruding through the openings, a gas inlet port into the chamber above or below the piston, |
| 5668861 |
Telecommunications system with notification hold |
September 16, 1997 |
| Apparatus and a method of implementing a notification and hold service in a telephone network is disclosed. A calling telecommunications device is placed on hold by the called telecommunications device, and signals an auxiliary computer system through a network switch that the calling |
| 5661424 |
Frequency hopping synthesizer using dual gate amplifiers |
August 26, 1997 |
| A frequency hopping synthesizer is constructed from two FET-based multiplier circuits each responsive to a carrier input signal and a modulation signal to produce respective output signals which are in-phase combined to provide a frequency-shifted signal. The multiplier circuits each |
| 5648958 |
System and method for controlling access to a shared channel for cell transmission in shared med |
July 15, 1997 |
| A system and method for controlling access to a shared channel for cell transmission in a shared medium network, wherein the shared medium distribution portion of said network extends from a node to a plurality of terminals within a community, having a tree-and-branch bus topology, has a |
| 5627668 |
Subcarrier-multiplexed optical transmission systems using optical channel selection |
May 6, 1997 |
| An optical amplifier is used as a frequency-selective high-gain element in a subcarrier-multiplexed fiber optic transmission system. A high-speed diode laser optical transmitter is modulated by a plurality of independent information channels that are carried on separate, appropriately sp |
| 5621723 |
Power control in a CDMA network |
April 15, 1997 |
| A means of power control on the reverse link of a CDMA network is disclosed. Specifically, the forward link from the base station to the subscriber unit is used to direct the subscriber unit to modify the output power radiated. The forward link consists of the forward packet data cha |
| 5615035 |
Photonic dual bus for wide-area CATV broadcast and data transport |
March 25, 1997 |
| Apparatus is disclosed which is advantageously used in local area, metropolitan-area, and wide-area networks using a dual bus architecture, and more particularly to a dual bus network design having significantly increased distance before termination or regeneration of the optical sig |
| 5612806 |
Acknowledgement using subcarrier multiplexed tones |
March 18, 1997 |
| Subcarrier multiplexed acknowledgment tones are used for contention recovery in multiple-access WDM networks with basedband data packets and subcarrier multiplexed control headers. Upon receiving a data message from another node, the receiving node sends a subcarrier acknowledgement tone |
| 5583937 |
Method for providing video programming nearly on demand |
December 10, 1996 |
| A method for providing video programming in a nearly on demand basis is disclosed. A video network includes a video server that operates several video recorders to simultaneously exhibit video performances or programs on a plurality of channels. The video server is controlled in real tim |
| 5577036 |
ATM memory with reduced noise transient |
November 19, 1996 |
| An asynchronous transmission mode (ATM) memory array capable of storing one ATM packet of data is an n x m array of memory locations, each memory location capable of storing one bit. The array has n columns, where n is the number of bits in an ATM cell of data, and m rows, where m is the |
