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Class 714/712 - Transmission facility testing


Subclass of Class 714 - Error detection/correction and fault detection/recovery
Definition: Subject matter in which the diagnostic testing is performed
No. of patents: 750
Last issue date: 03/20/2012


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NumberTitleIssue Date
8140920Method and system for providing bit error rate characterization
An approach is provided for bit error rate characterization. A test signal representing one or more Ethernet frames exhibiting a particular bit error rate is generated. The test signal is output to a device under test. Traffic is received from the device under test....
03/20/2012
8095833Transmitting 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 same control information signal. The data signal and the control informa...
01/10/2012
8065570Testing an integrated circuit having configurable input/output terminals
Testing an integrated circuit (IC) having numerous terminals coupled to numerous digitally controlled impedance (DCI) modules, where the numerous DCI modules control configurable impedances of the numerous terminals. The IC further includes a control circuit having ...
11/22/2011
8051340System and method for balancing delay of signal communication paths through well voltage adjustment
A method of balancing signal interconnect path delays between an analog domain and a digital domain of an integrated circuit includes applying a test signal to a selected one of a plurality of communication paths between the analog domain and the digital domain. A r...
11/01/2011
8037377Techniques for performing built-in self-test of receiver channel having a serializer
A circuit includes a receiver channel and a built-in self-test circuit. The receiver channel has a serializer and a deserializer. The built-in self-test circuit generates test signals that are transmitted in parallel to the serializer during a test of the receiver c...
10/11/2011
7992058Method and apparatus for loopback self testing
A system and method for loopback self testing. A system includes a host device and an endpoint device. The host device transmits unencoded test symbols. The endpoint device loops back the unencoded test symbols to the host device. The host device drives at least som...
08/02/2011
7984343Inter-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 the input of the data of the connection relation indicating the devices...
07/19/2011
7913127Diagnostics of cable and link performance for a high-speed communication system
A method and system for performing diagnostic tests on a real-time system controlled by a state machine. A sequence of states recorded as the state machine operates is used to determine error conditions. The sequence of states is compared to expected sequences of st...
03/22/2011
7853839Method and apparatus for verifying the correctness of FTAP data packets received on the FLO waveform
Systems and methodologies are described that facilitate verifying correctness of FLO test application protocol (FTAP) data packets. According to various aspects, systems and/or methods are described that enable generating an expected test signature at an FTA client ...
12/14/2010
7836363DVI link with circuit and method for test
A method of transmitting data through a link comprises encoding digital data into encoded digital data in a transition minimized differential signaling encoder, serializing the encoded digital data into encoded and serial digital data in a serializer, generating tes...
11/16/2010
7802153Trainable link
A method is provided to align clock and data signals over a source-synchronous link. The method includes sending header data and a default clock signal over the link. The header indicates a start of a training packet and the default clock signal ensures that the hea...
09/21/2010
7797592Automatic communication channel fault mitigation
A physical layer device includes a coding circuit to transmit first data, and to receive second data, at one of a plurality of data rates. A communication circuit transmits first signals representing the first data, and receives second signals representing the secon...
09/14/2010
7734965Methods, architectures, circuits and systems for transmission error determination
Methods, circuits, architectures, software and systems for error detection in transmitted data. The method generally includes receiving data and non-data, the data including fixed length data portions, removing non-data; and if the data includes a remainder, adding ...
06/08/2010
7716539Serial communication control system
Disclosed is serial communication control system including: a first microcomputer; and a second microcomputer connected to the first microcomputer through a serial line, wherein the second microcomputer includes an R/B signal sending section to send one of a READY s...
05/11/2010
7711997Method of controlling a transceiver module
A method of controlling a transceiver module which includes a physical-layer integrated circuit having a physical-layer register unit, and a control integrated circuit having a control-side register unit. In the method, the physical-layer register unit is emulated b...
05/04/2010
7685478Method of testing memory card operation
A system and method are disclosed for testing operation of a memory card within an electronic host device. The system includes a flat flexible cable, or strip, for electrically coupling between the memory card slot in a host device and a test assembly. The test asse...
03/23/2010
7653843Method and arrangement to estimate transmission channel characteristics
A channel characteristic of a transmission channel between a remote terminal and a central office is estimated by collecting information in the remote terminal, transferring this information from the remote terminal to the central office and matching the received in...
01/26/2010
7631230Method and apparatus for testing a transmission path
One embodiment of the invention provides apparatus and a method for testing a transmission path across one or more printed circuit boards. According to the method, a test signal is presented at a first location on the transmission path. The test signal is generally ...
12/08/2009
7624314Echo canceler-based mechanism for performing and reporting fault diagnostic testing of repeatered telecommunication line
A repeater-installed fault location mechanism conducts parametric measurements on a segment of wireline to which the repeater is connected, and adjusts taps of an echo cancellation operator in the repeater transceiver equipment, in accordance with the response of th...
11/24/2009
7610522Compliance of master-slave modes for low-level debug of serial links
A condition is detected to cause a component having physical layer circuitry with a transmitter and a receiver to enter a testing state. The transmitter transmits a pre-selected data pattern while comparing data received by the receiver to the pre-selected data patt...
10/27/2009
7610521Communication control system and method for supervising a failure
A communication control system has a plurality of control units that are connected via a communication bus to provide bidirectional communication. A control unit detects a failure when it occurs. Upon failure detection, the control unit generates a failure detection...
10/27/2009
7607054Method of improving the interface efficiency in a communications network
In a method for improving the interface efficiency between two network nodes (2, 3, 4) in a communications network (1) the data blocks to be transmitted over the interface are checked for corruption or likely corruption prior to transmission and only u...
10/20/2009
7603594Wireless communications system
The present invention is a wireless communications system for simultaneously establishing a basic access network and a wireless access network using at least two kinds of wireless communication networks. In the basic access network, there are executed signaling comm...
10/13/2009
7581147Radio resource control-service data unit reception
A method for receiving a segmented communication begins by periodically transmitting the segmented communication. The segmented communication is received and each segment of the segmented communication is examined to determine if the segment is valid. If the segment...
08/25/2009
7577883Data transmission speed test system and method
A data transmission speed test system is provided. The system includes a computer. The computer is configured for reading data stored in a database and transmitting the data to a target device. The computer is further configured for testing data transmission speeds ...
08/18/2009
7562267Methods and apparatus for testing a memory
In a first aspect, a first method is provided that includes the steps of (1) transmitting a first signal representative of a test operation from a test circuit to a memory via a first signal path; (2) transmitting a second signal, synchronized with the first signal,...
07/14/2009
7549096Methods and systems for tracking and playing back errors in a communications network
In accordance with the invention, a Logging Administration Maintenance and Billing Entity (LAMB) is interfaced to a network transport bus for logging network traffic, for error tracking, error replay, and billing functions. In the exemplary embodiment, the LAMB reco...
06/16/2009
7546496Packet transmission device and packet transmission method
A packet transmission device that is connected to a plurality of communication lines, and transmits a packet received, includes a failure detecting unit that monitors a condition of the communication lines, and detects a failure in the communication lines; and a pac...
06/09/2009
7523365Dynamic determination of signal quality in a digital system
A receiving processor is configured with a normal (operational) path and a test path. The test path is configured in parallel with the normal path. The test path simulates and receives as input the same data as the normal path, but the test path has a separate volta...
04/21/2009
7487412Test buffer design and interface mechanism for differential receiver AC/DC boundary scan test
A boundary scan test system including a transmitter and a receiver. The system performs DC and AC boundary scan testing of the interconnections between devices. The system addresses fault masking that can occur during testing. Of concern are AC coupled interconnecti...
02/03/2009
7467338Apparatus and method for generating an error signal
The invention relates to an apparatus for generating an error signal from an input signal, the error signal to be used for generating a transmit signal, the apparatus comprising: distorter for distorting the input signal to obtain a distorted signal, calculator for ...
12/16/2008
7464307High performance serial bus testing methodology
According to one embodiment, a built-in self test (IBIST) architecture/methodology is disclosed. The IBIST provides for testing the functionality of an interconnect (such as a bus) between a transmitter and a receiver component. The IBIST architecture includes a pat...
12/09/2008
7457995Method and apparatus for generating reference transmission signal for use in testing communications receivers
A method and apparatus for generating a reference transmission signal for use in testing a communications system. A data packet transmission signal containing a plurality of reference data is captured and digitized, following which reference data is retrieved. The r...
11/25/2008
7451365System and method for identifying nodes in a wireless network
Systems and methods for providing a boundary scan test of a wired or wireless network having a plurality of network nodes are presented. The system includes a test station communicatively coupled with the network. The test station creates a MAC layer scan test route...
11/11/2008
7444558Programmable 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
7437128Portable interference-generating device for use in CDMA mobile testing
A portable interference-generating device for inducing desired frame error characteristics, such as desired frame error patterns and rates, at a mobile unit receiving a carrier signal having at least one data channel having a plurality of data frames. The induced fr...
10/14/2008
7437643Automated BIST execution scheme for a link
Training of a link is performed, wherein the link is an interconnect between two devices of a computer system. A built-in self-test (BIST) of the link is performed. A result from the link training is compared to a result from the BIST. A link status of the link is p...
10/14/2008
7434114Method of compensating for a byte skew of PCI express and PCI express physical layer receiver for the same
A method of compensating for a byte skew of a PCI Express bus, the method including determining whether received data are in a training sequence or not, setting an alignment point corresponding to each of the lanes based on a comma symbol included in the training se...
10/07/2008
7433069Image transmission method and its apparatus
An image transmission apparatus and method for use with at least two transmission paths having different transmission rates from one another. The image transmission apparatus comprises an image input for receiving an image signal, a coding processing unit for encodi...
10/07/2008
7429925Label printer having an RFID communication function
An electronic apparatus having a RF tag communication function is provided which includes a RF tag reader/writer and a main controller for controlling the RF tag reader/writer. The RF tag reader/writer includes a radio communication section for executing radio commu...
09/30/2008
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