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7631233 |
Data inversion register technique for integrated circuit memory testing
A data inversion register technique for integrated circuit memory testing in which data input signals are selectively inverted in a predetermined pattern to maximize the probability of identifying...
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7571379 |
Method and system for configuring registers in microcontrollers, and corresponding computer-program product
A system for configuring registers of microcontrollers includes first register and second registers. The system includes a data source for loading a datum into the first register and the logic...
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7546519 |
Method and apparatus for detecting and correcting soft-error upsets in latches
An error detection circuit for a latch precharges two dynamic nodes whose discharge paths are gated by true and complement storage nodes of the latch, such that one and only one of the dynamic...
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7426686 |
System and method for verifying data integrity
A system for verifying data integrity includes a central processing unit (CPU) ( 1 ), a non-volatile random access memory (NVRAM) ( 2 ), and a program memory ( 3 ). The NVRAM includes: a plurality...
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7392465 |
Testing ram address decoder for resistive open defects
Hard-open defects between logic gates of, for example, an address decoder and the voltage supply which result in logical and sequential delay behavior render a memory conditionally inoperative. A...
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7113435 |
Data compression read mode for memory testing
Memory devices having a normal mode of operation and a test mode of operation are useful in quality programs. The test mode of operation includes a data compression test mode. In the data...
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7030731 |
Wireless identification systems and protocols
Monitoring systems and protocols are disclosed that are flexible in mode operation and format depending on the environment in which they are used. Such monitoring systems and protocols are able to...
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6907090 |
Method and apparatus to recover data from pulses
Methods and corresponding apparatus to recover data from a signal comprising groups of pulses generated in response to analog waveforms are described. Data recovery in accordance with the invention...
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6799291 |
Method and system for detecting a hard failure in a memory array
A method and system for detecting a failure in a dynamic random access memory (DRAM) array having a plurality of cells organized in a matrix fashion of rows and columns. The method includes reading...
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6690733 |
Method for data transmission
In a method for data transmission in which the binary original data (D 0 , . . . , Dm) is transferred from a transmitter to a unit of a receiver ( 1 ), selected preferably by means of a binary base...
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6507929 |
System and method for diagnosing and repairing errors in complementary logic
A system within a complementary logic circuit having a true tree and a complement tree, for correcting an illegal non-complementary output caused by a defect in either tree. A complementary logic...
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6502220 |
Complementary logic error detection and correction
A system and method for detecting and rectifying a proscribed non-complementary output from a complementary logic circuit. A complementary logic circuit having a true tree and a complement tree is...
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6253350 |
Method and system for detecting errors within complementary logic circuits
A method and system for detecting faults within dual-rail complementary logic circuits. A method and system are disclosed for detecting faults within dual-rail complementary logic circuits. A...
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5903613 |
Data reception device, data reception method and electronic equipment
The invention relates to a data reception device for receiving packetized data in the form of a differential signal. This device comprises a data reception section that generates a digital signal...
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5894487 |
Error detection of directory arrays in dynamic circuits
A system and method for providing error detection in a directory has been disclosed. The method and system include comparing a first group of data and a second group of data to provide a comparison...
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5881078 |
Logic circuit having error detection function and processor including the logic circuit
Soft errors generated at an active time are reduced by adding a small-scale circuit to a high performance LSI, such as a processor without reducing the performance of the circuit. The processor has...
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5838696 |
Record carrier and devices for reading and recording such a record carrier
A record carrier has recorded thereon a data signal which represents data words, added codewords of a first type and added codewords of a second type. The added codewords of the first type have a...
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5822514 |
Method and device for processing signals in a protection system
A method and system for processing signals in a protection system involves executing operations on signals that are complimentary to each other, such that the results of the operations determines...
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5701410 |
Method and system for detecting fault conditions on multiplexed networks
A method for detecting fault conditions on a multiplexed network having first and second busses. The method includes sensing a start of frame delimiter (SOF) for the first bus, and determining the...
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5666381 |
Communication system used in semiconductor device manufacturing equipment
A communication system used in a semiconductor device manufacturing equipment includes a master side transmission unit having a master transmitting logic module for transmitting information in an...
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5663970 |
Circuit and method for testing frequencies
A method and apparatus are provided for testing whether an electronic circuit, or DUT, for generating a clock signal is generating a signal of a frequency within a regulated frequency range. The...
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5555438 |
Method for synchronously transferring serial data to and from an input/output (I/O) module with true and complement error detection coding
An industrial controller Input/Output module includes on-board processing circuitry in the form of a microprocessor and associated memory, a first programmable logic circuit and a second...
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5404374 |
Method and apparatus for transmitting and receiving encoded data using multiple frequency coding
In a communication system including a plurality of networked stations that communicate using a slow frequency hopping system, a method for encoding a packet of data in a transmitting station and...
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5394410 |
Differentially coded and guard pulse position modulation for communication networks
In a wireless infrared communications system, a technique for encoding data for serial transmission and the correlative technique for decoding the transmitted data. A data transmission period is...
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5325376 |
Communication system for detecting a communication error in information transmitted between a plurality of units and a main control unit
A communication system includes a main control unit controlling a plurality of units, a transmitter for transmitting information between the main control unit and the plurality of units, and an...
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5311524 |
Fault tolerant three port communications module
A fault tolerant three port communications module has two control ports for receiving commands from two computers, and a communications port for transferring data over a communications channel in...
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5241549 |
Data communications system
A train of signals is generated by clocking an 8-bit word from an 8-bit shift register which has been loaded with an initial data word. The register is provided with feedback loop. The serial data...
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5224107 |
Method in a parallel test apparatus for semiconductor memories
A method in a parallel test apparatus provides for parallel testing a plurality of memory cells of a semiconductor module in parallel. The information read from the memory cells that are forwarded...
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5193177 |
Fault indicating microcomputer interface units
A microcomputer interface arrangement includes a microcomputer having I/O ports coupled to individual interface units. A fault detection circuit detects a fault in an interface unit, interrupts the...
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5168510 |
Spread spectrum-time diversity communications systems and transceivers for multidrop area networks
Messages are transmitted on pairs of frequencies that are orthogonal, that is the frequencies have no least common denominator (are prime to each other). A message is transmitted on the first of...
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4860286 |
Encoding method in transmission of plurality of oversampled data channels, and apparatus for carrying out the method
An encoding method in transmitting a plurality of parallel, independent and asynchronous data channels, each of which after encoding into serial from is to be supplied to an optical transmitter...
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4785453 |
High level self-checking intelligent I/O controller
The present invention is an input/output controller for providing total data integrity for any single point failure. The I/O controller comprises a processor module having two microprocessors, an...
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4750165 |
Method of duplex data transmission using a send-and-wait protocol
The invention provides a method of communicating data between a pair of transceivers in a full-duplex manner using a send-and-wait data handling protocol. The transceivers are connected by a pair...
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4740972 |
Vital processing system adapted for the continuous verification of vital outputs from a railway signaling and control system
Continuous verification of vital (fail-safe) outputs from an information processing system is obtained without the need for large computing capacity (overhead). Multibit test sequences are provided...
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4712213 |
Flip status line
Fault checking of slave devices. All the slave devices are polled periodically by a master control circuit and their reponse is noted. The master control circuit asserts a control signal for every...
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4633473 |
Fault tolerant communications interface
A communications interface exchanges serial bit signals between sources differentially, over redundant, two conductor, primary and secondary channels. The primary channel provides the...
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4599723 |
Method of encoding data for serial transmission
A technique for redundantly encoding data for synchronous or asynchronous serial transmission or recording and the correlative technique for decoding the serial bit stream are disclosed. The...
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4442521 |
Switching device for detecting interruptions in transmission lines
In a transmission system employing a plurality of parallel lines for transmitting serial digital signals, means are provided in each line for detecting and disconnecting any line on which...
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4434499 |
System of numerical transmission with adaptative coding, of analogical information sampled and transformed by orthogonal transformation
A numerical or digital transmission system uses an adaptative coding, of log information, which is sampled and transformed by an orthogonal transformation. The coding has a rate of data flow or...
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4425647 |
IR Remote control system
A remote control system for a television receiver includes a transmitter and a receiver, the transmitter being adapted for transmitting a single word multibit code identifying a selected function...
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4389636 |
Encoding/decoding syncronization technique
A non-binary digital encoding/decoding process wherein the serial bits to be transferred are encoded into a stream of complementary-bit-pairs, a predetermined bit of each pair corresponding to an...
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4369516 |
Self-clocking data transmission system
A data transmission system is described where data signals are bidirectionally transmitted between a data transmitter and a plurality of data receivers in a self-clocking bit streams carried on...
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4368534 |
Keyboard controlled vital digital communication system
A vital digital control system with keyboard inputs for activating at least one output device in response to a manual keyboard selection of a sequence of the predetermined number of operation...
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4366478 |
Signal transmitting and receiving apparatus
Disclosed is a signal transmitting and receiving apparatus for transmitting and receiving parallel-by-word data signals, converting the parallel-by-word data signal to serial-by-word data signal,...
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4338629 |
Process and apparatus for coding binary signals for numbering images or pictures stored on a recording medium for stop mode reproduction
Process for coding binary image numbering signals to be stored on a recording medium and device for reading these signals. The process aims at protecting these signals from variations encountered...
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4302841 |
Motor vehicle electrical system
An automotive vehicle electrical system includes a transmitter device (10) which is sensitive to the status of a set of control switches (S1 to S8) to produce a sequence of digital words, each...
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4166272 |
Process for data transfer with increased security against construction member error
A process for exerting control over a remote facility by transmission of control data protected against error due to component breakdown and/or failure as a result of said process, which comprises;...
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4160240 |
Binary digital pager having an eight function code read-out
A read-out of eight distinct function codes is obtained in a pager or similar device having a single two-word address code plug by creating a second, but dependent, address within the pager and...
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4045771 |
Encoding and decoding device for error-detecting transmission systems, in particular for remote-control and remote-actuation equipments
An encoding transmitting unit converts parallel data words into timing pulse synchronized serial data words which are supplied to a transmission channel, and a decoding receiving unit receives the...
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3978449 |
Method and apparatus for in-band signalling in data transmission
An in-band signalling system for the transmission of both data and control signals through a common communications channel is disclosed. Unique means of distinguishing data bits from control bits...
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