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| Number | Title | Issue Date |
| 7444558 | Programmable measurement mode for a serial point to point link A serial point to point link that communicatively couples an integrated circuit (IC) device to another IC device is initialized by transferring a training sequence of symbols over the link. Registers of the IC device are programmed, to set a symbol data pattern and ... | 10/28/2008 |
| 7370247 | Dynamic offset compensation based on false transitions A method and apparatus provide a receiver with an architecture to regulate a bit error rate of the receiver using an offset based on detecting false transitions in received data. In an embodiment, such false transitions in data may be determined in a bang-bang detec... | 05/06/2008 |
| 7366964 | Method, system, and apparatus for loopback entry and exit A loopback test to test a communication link for a layered interface where in a master agent programs the electrical parameters for the slave agent, such as, the offset, timing, and current compensation with a loopback control register. The slave and master agent to... | 04/29/2008 |
| 7336936 | Radio signal receiving apparatus and radio signal receiving method Herein disclosed is a radio signal receiving apparatus for receiving radio signals each having a base band signal component, comprising: radio signal amplifying means for amplifying the radio signals each having a signal level; base band signal producing means for p... | 02/26/2008 |
| 7324983 | Reproducible selection of members in a hierarchy A method for selecting members in a hierarchy includes determining a sequence of one or more actions associated with a member selection tree. The actions collectively selecting one or more members from a hierarchy of members. The hierarchy of members is associated w... | 01/29/2008 |
| 7324068 | Chained image display apparatus having mutual examining function A chained image display apparatus having a mutual examining function where a plurality of image display apparatuses, controlled by a central control unit and connected in series, recognize interruption of power to an image display apparatus and correspondingly notif... | 01/29/2008 |
| 7320012 | Method and apparatus for file management File management method having first and second processing modes for storing file type information for discrimination between first and second processing modes in recording medium as file management information associated with file for file management. In first proce... | 01/15/2008 |
| 7272756 | Exploitive test pattern apparatus and method Communications equipment can be tested using a test pattern that is modified compared to, and more exploitive than, a standard test pattern. Test patterns can be employed that have lengthened or shortened consecutive identical digit (CID) portions, or that have leng... | 09/18/2007 |
| 7242178 | Digital cable toning apparatus and method A digital toner/locator employs tone packets using a 455 Khz. carrier. Plural packet quanta provide multiple test modes which are advantageously selected from a probe without requiring returning to the tone generator to change mode. A locate and isolate mode are pro... | 07/10/2007 |
| 7237161 | Remote integrated circuit testing method and apparatus A method and system for remotely testing an integrated circuit installed in an integrated circuit system is presented. The integrated circuit is equipped with test structures for testing functional blocks within the integrated circuit, and a test access mechanism co... | 06/26/2007 |
| 7231003 | System and method for aligning data between local and remote sources thereof The communication system includes two communication channels for communication of protection and control information between two protective relays on a power line portion of an electric power system. A switch provided at the receiving relay connects one communicatio... | 06/12/2007 |
| 7092362 | Terminal extension repeater An extension repeater which interfaces between a digital service network and a local network span combines extensive diagnostic and operational functions in a single, space-efficient device. The functions include simultaneous loopback capability in both the directio... | 08/15/2006 |
| 7023963 | DSL line card echo canceler-based mechanism for locating telecommunication line fault A digital subscriber loop line card-installed mechanism conducts parametric measurements on the wireline to which the line card is connected, and adjusts taps of an echo cancellation operator in accordance with the response of the wireline to an electrical stimulus ... | 04/04/2006 |
| 6956826 | Local area network for distributing data communication, sensing and control signals A network for carrying out control, sensing and data communications, comprising a plurality of nodes. Each node may be connected to a payload, which comprises sensors, actuators and DTE's. The network is formed using a plurality of independent communication links, e... | 10/18/2005 |
| 6928592 | Communication channel accuracy measurement This invention relates to the measurement of the accuracy of a communication channel. The invention provides a method and apparatus for determining channel degradation information for a communications channel, in which a known data sequence is generated within a tra... | 08/09/2005 |
| 6728924 | Packet loss control method for real-time multimedia communications A method for providing packet loss recovery in a data packet-based network used for real-time multimedia communications. In accordance with a first illustrative embodiment of the present invention, the information payload associated with a given data packet k is ide... | 04/27/2004 |
| 6684350 | Repetitive pattern testing circuit for AC-coupled systems A method for testing a signal path for mark ratio tolerance includes generating a varying test pattern by selecting between a first pattern and a second pattern according to a defined sequence; and sending the varying test pattern over the signal path. An... | 01/27/2004 |
| 6453432 | Method and system for communicating the status of a digital transmission line element during loopback A method and system for reporting the status of a digital transmission line element, such as a regenerative repeater or a network interface unit, to a remote location. The line element is interconnected to a digital transmission line and receives a data s... | 09/17/2002 |
| 6320850 | Satellite communication adaptive control coding A method for maximizing satellite downlink information rate is disclosed. A ground transmitter (102) applies an outer block code to a data channel, modulates it, and transmits an uplink data stream (104) to a satellite (106) which demodulates the uplink d... | 11/20/2001 |
| 6151691 | Remote reporting system for digital transmission line elements An improved system for allowing a digital transmission line element, such as a regenerative repeater or a network interface unit, to communicate with a remote location. The line element is interconnected to a digital transmission line, which receives an i... | 11/21/2000 |
| 5889785 | Remote reporting system for digital transmission line elements An improved system for allowing a digital transmission line element, such as a regenerative repeater or a network interface unit, to communicate with a remote location. The line element is interconnected to a digital transmission line, which receives an i... | 03/30/1999 |
| 5784184 | WDM Optical communication systems with remodulators and remodulating channel selectors The present invention provides a WDM optical communication system with remodulators at the transmission input and remodulating channel selectors adjacent the optical receivers, providing complete control over the interfaces with optical transmission equip... | 07/21/1998 |
| 5726993 | Signal detector for telephone line repeator remote loopback system A loopback enabled by an instruction and address code pair transmitted with the regular data stream affords a simplified fault location scheme for a T1 repeater span. By selecting unique addresses for each repeater using a predetermined frame sequence and... | 03/10/1998 |
| 5680405 | Remote reporting system for digital transmission line elements An improved system for allowing a digital transmission line element, such as a regenerative repeater, to communicate with a remote location. The line element is interconnected to a digital transmission line, which receives an incoming data stream. The dat... | 10/21/1997 |
| 5654985 | Address tracking over repeater based networks A system is provided for use in a network to provide authentication of packets of data, provide security to ensure the prevention of unauthorized receipt of data, to provide improved monitoring of the packets of data transmitted and received over such a n... | 08/05/1997 |
| 5636203 | Method and system for identifying fault locations in a communications network All nodes on a malfunctioned communications circuit of a communications network are enabled to identify the location of the fault causing the circuit malfunction. Upon detecting an incoming signal impairment on the circuit, each node on the circuit first ... | 06/03/1997 |
| 5619510 | Output buffer type asynchronous transfer mode switch and detecting error boards thereof A buffer control circuit is arranged for each of a master board and a slave board having FIFO buffers corresponding to each output port. Each of the buffer control circuits is arranged on the boards in a bit-slice structure. The buffer control circuit on ... | 04/08/1997 |
| 5600656 | Remote loopback apparatus and method for telephone line repeaters A loopback enabled by an instruction and address code pair transmitted with the regular data stream affords a simplified fault location scheme for a T1 repeater span. By selecting unique addresses for each repeater using a predetermined frame sequence and... | 02/04/1997 |
| 5493562 | Apparatus and method for selectively storing error statistics A circuit including a data formatter for receiving desired information associated with a data packet and arranging the bits into a format for transfer to a memory, a memory for storing the desired information for later access by a microprocessor, and a co... | 02/20/1996 |
| 5483233 | Analogue telemetry system and method for fault detection in optical transmission systems An analogue telemetry system/method provides fault location in an optical transmission system including optical fibre amplifiers. Each amplifier includes an optical fibre amplifier with an AGC loop therearound, a respective optical pump source being inclu... | 01/09/1996 |
| 5475385 | Analogue telemetry system and method for fault detection in optical transmission systems An analogue telemetry system/method provides fault location in an optical transmission system including optical fibre amplifiers. Each amplifier has a respective optical pump source including an AGC loop around the optical amplifier's fibre. Spontaneous e... | 12/12/1995 |
| 5459714 | Enhanced port activity monitor for an integrated multiport repeater A system is provided on an Integrated Multiport Repeater (IMR) to monitor the activity of the IMR when the repeater is in minimum mode. Through this system the serial output pin outputs status based upon inputs at two input pin the signal in and the clock... | 10/17/1995 |
| 5436746 | Optical transmission system An optical transmission system comprises amplified forward and return paths between a local station and a remote station. Each amplifier of the forward path has an attenuated loopback coupling its output to the return path. Frequency modulated supervisory... | 07/25/1995 |
| 5422929 | Telephone line repeater and method of testing same A telephone line repeater (28) includes a pattern decoder/recognizer (100) which recognizes, inter alia, an input interrogating signal transmitted on a telephone network (20). The interrogating signal includes an address field (302) having at least one su... | 06/06/1995 |
| 5422876 | Out-of-band loopback control scheme A communications method and a network for carrying out the method are provided. The network includes a loopback command system and a first link station connected to a communications link. The link traverses several loopback-capable devices as it extends f... | 06/06/1995 |
| 5414694 | Address tracking over repeater based networks A system is provided for use in a network to provide authentication of packets of data, provide security to ensure the prevention of unauthorized receipt of data, to provide improved monitoring of the packets of data transmitted and received over such a n... | 05/09/1995 |
| 5408348 | System for re-establishing the transmission quality of a link including amplifier equipments in the event of failure of one or more amplifier equipments A system for re-establishing the transmission quality of a digital information transmission link including amplifier equipments in the event of failure of one or more amplifier equipments includes, associated with at least one of the amplifier equipments,... | 04/18/1995 |
| 5351245 | Bit error rate detection method The present disclosure includes a discussion of a bit error rate detection method for use in a digital radio communication system. The digital radio communication system contains multiple radios which transmit and receive radio frequency (RF) signals. The... | 09/27/1994 |
| 5317278 | Switched active fault locate filter In locating a faulty regenerator, a fault locating filter is used in a T1 or T1C Carrier Repeater Apparatus Case or Office Repeater Bay (ORB) to select the appropriate fault locate sinusoid from the output winding of the repeater. This process uses three ... | 05/31/1994 |
| 5287343 | Network administration system A network administration system includes a network of a plurality of cascade connected repeaters for functional terminal units, and an administrative terminal connected through a transmission path to the network for administrating the network of the repea... | 02/15/1994 |
