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8694870 Unequal error protection for embedded coding of borehole images and variable-quality telemetry channels  
An unequal error protection scheme for borehole telemetry. The scheme, when applied to imaging applications, assigns more protection for the more significant bits and less protection for less...
8639996 Systems and methods for uplink inter-cell interference cancellation using hybrid automatic repeat request (HARQ) retransmissions  
Systems, methods, apparatus, devices and computer program products enhance uplink inter-cell interference cancellation with HARQ retransmissions. The decoding of a data packet depends on whether...
8560898 Error correction method and error correction apparatus utilizing the method  
An error correction method for correcting an first ECC code from a storage unit, comprising: (a) marking at least a first part of the first ECC code according to a correction result generated by...
8489944 Disabling outbound drivers for a last memory buffer on a memory channel  
Memory apparatus and methods utilizing multiple bit lanes may redirect one or more signals on the bit lanes. A memory agent may include a redrive circuit having a plurality of bit lanes, a memory...
8286039 Disabling outbound drivers for a last memory buffer on a memory channel  
Memory apparatus and methods utilizing multiple bit lanes may redirect one or more signals on the bit lanes. A memory agent may include a redrive circuit having a plurality of bit lanes, a memory...
8250416 Redundant acknowledgment in loopback entry  
Redundant acknowledgment between agents performing a loopback test over bidirectional communications bus is described. In one example, in a processor including a communications agent coupled to a...
8145967 System and method for verifying the receive path of an input/output component  
A system and method for verifying the receive path of an input/output device such as a network interface circuit. The device's operation with various different input sources (e.g., networks) and...
8095833 Transmitting apparatus, receiving apparatus, transmission method, and reception method  
A transmission method includes generating a control information signal relating to control information of a data signal. A transmission frame is formed by repeating and discretely arranging the...
8078920 Information processing device and error processing method  
An information processing device having two processing units capable of operating in synchronization with each other, includes: a common unit capable of outputting an identical signal to the two...
8037375 Fast data eye retraining for a memory  
A method, device, and system are disclosed. In one embodiment method includes determining a left edge and right edge of a valid data eye for a memory. The method continues by periodically checking...
7984343 Inter-device connection test circuit generating method, generation apparatus, and its storage medium  
A test circuit can use a simple test pattern data without customization for each substrate and considerably reduce a test preparation process. A connection test circuit is generated by receiving...
7979759 Test and bring-up of an enhanced cascade interconnect memory system  
A memory hub device with test logic is configured to communicate with memory devices via multiple hub device ports, and is also configured to communicate on one or more busses in an upstream and...
7895479 System and method for initializing a memory system, and memory device and processor-based system using same  
Systems, controllers and methods are disclosed, such as an initialization system including a controller that receives patterns of read data coupled from a memory device through a plurality of read...
7761753 Memory channel with bit lane fail-over  
Memory apparatus and methods utilizing multiple bit lanes may redirect one or more signals on the bit lanes. A memory agent may include a redrive circuit having a plurality of bit lanes, a memory...
7681093 Redundant acknowledgment in loopback entry  
Redundant acknowledgment between agents performing a loopback test over bidirectional communications bus is described. In one example the acknowledgment is performed by initiating loopback...
7496815 Method and apparatus for automatic generation of system test libraries  
An apparatus and associated methodology are provided to generate system test libraries for solution testing involving heterogeneous devices from different vendors. A unified user interface employs...
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....
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,...
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...
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...
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...
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...
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...
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...
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...
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;...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
5274367 Device for in-service monitoring of communication transmission equipment  
In a device for error locating and/or in-service monitoring for communication transmission equipment comprising a call unit (7, 8) that exchanges information with processor units (6) and wherein...
5271035 Repeater supervision  
An arrangement for signalling to supervisory equipment in a repeater in a digital transmission system. A digital data test sequence comprising a plurality of multi-bit words each accompanied by a...
5251203 Hub privacy filter for active star CSMA/CD network  
A logic section is provided on each port of an active repeater unit in a CSMA/CD network for comparing the destination address of a data packet retransmitted by the active repeater unit with the...
5206860 Recovery from a possible switching error in a computer I/O system  
A connection recovery apparatus for placing a dynamic connection of a dynamic switch of a computer I/O system in a known state upon the detection of a possible switching error. The I/O system...
5121396 Preservation of CRC integrity upon intentional data alteration during message transmission  
In complex networks, data frames may be routed through different systems having different frame or addressing requirements. When the frames are transferred or bridged between such systems, known...

Matches 1 - 50 out of 75 1 2 >