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7603596 Memory device capable of detecting its failure  
A memory device capable of detecting its failure, the memory device includes a data input section for receiving data applied from an external part of the memory device; a latch section for...
7594150 Fault-tolerant architecture of flip-flops for transient pulses and signal delays  
A method and apparatus for a structure of a flip-flop that is tolerant to the noise pulses occurring due to the presence of crosstalk faults by sampling the input data multiple times before and...
7558992 Reducing the soft error vulnerability of stored data  
Embodiments of apparatuses and methods for reducing the soft error vulnerability of stored data are disclosed. In one embodiment, an apparatus includes storage logic, determination logic, and...
7516376 Test pattern generator, test circuit tester, test pattern generating method, test circuit testing method, and computer product  
A test circuit tester includes a scan-chain input-output information generator that generates information for an input and an output of the scan chain that is scan-chain input-output information,...
7447948 ECC coding for high speed implementation  
Methods and apparatus for performing error correction code (ECC) coding techniques for high-speed implementations. The ECC code word is structured to facilitate a very fast single-error-detect...
7395475 Circuit and method for fuse disposing in a semiconductor memory device  
A fuse disposing circuit executes a same test as in a state before a fuse is cut, even in case the fuse is cut. For this, the fuse disposing circuit in accordance with the invention includes a test...
7376889 Memory device capable of detecting its failure  
A memory device capable of detecting its failure, the memory device includes a data input section for receiving data applied from an external part of the memory device; a latch section for...
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,...
7039835 Drop-out management system and method  
Drop-outs in a data read channel having one or more controllable elements are managed. A data read channel derives a signal having at least one drop-out characterising parameter from which data are...
6640328 Method for detecting dropouts in data delivered over a bandwidth-limited bus  
A method for detecting dropouts in digital data transferred over a bus from a digital data source to a computer system. Each address in the computer system buffer memory is initialized to a...
5878063 Method of detecting cell loss and exchange provided with cell loss detecting function  
A cell count identifier inserting portion for inserting a cell count identifier into the header portion of a cell is provided at a predetermined position within an exchange and a plurality of cell...
5742623 Error detection and recovery for high rate isochronous data in MPEG-2 data streams  
Error recovery is provided for isochronous data ("isodata") obtained from a data stream. Isodata transport packets are monitored to locate isodata presentation time stamps (PTSs). The presentation...
5691998 Data transmission protection circuit with error correction  
A protect circuit that may be interconnected to two different data transmission lines and that provides enhanced error correction. The circuit includes first and second line build-out circuits and...
5627846 Drop-out location detection circuit  
A digital data reproducing circuit for use with a magnetic or optical data storage for detecting and flagging signal level drop-outs in pulse position modulated (PPM) recorded signal levels....
5615223 PPM decoder utilizing drop-out location information  
A method of and apparatus for decoding data from positive and negative pulses of an encoded pulse train, e.g. a NRZ pulse train for PPM encoding, wherein the recorded data is subject to drop-outs...
5596678 Lost frame concealment  
A receiver in a frame based radio communication system includes a speech decoder of the source-filter type which is controlled by internal state variables updated on a frame by frame basis for...
5572622 Rejected frame concealment  
A method and apparatus for improving the decoding of audio signals is disclosed. In a receiver of a frame based radio communication system, rejected frames are concealed according to a first...
5570382 Clock signal fault detector  
A clock signal hull detector includes a signal level monitor for detecting an extraordinary condition in which the clock signal to be monitored is stuck at either a high level or a low level and a...
5499336 Monitoring a computer network  
A method is proposed for monitoring a computer network having at least two subscribers connected via a databus comprising at least two lines, said subscribers having in each case one receiving...
5412801 Gap recovery for off-site data storage and recovery systems  
A method for creating a control record for use in future machine recovery of gaps in a complete series of journal data formed by a computing machine from a complete series of transactional data....
5400349 Fault tolerant comparator for disk drive controllers  
An apparatus and method are disclosed for comparing disk data to a synchronization pattern. A preferred embodiment includes a plurality of exclusive NOR gates for exclusive NORing the disk data...
5373513 Shift correction code system for correcting additive errors and synchronization slips  
In a shift correction decoder which processes d,k-constrained RLL data that is encoded in accordance with a shift correction code whose symbols in GF(p) comprise modulo p reductions of cumulative...
5351186 System and method for obtaining information concerning a product or a service  
A system and method for obtaining information concerning a product or service to a user which includes a remotely located source of computer-based information for generating and transmitting...
5329538 Circuit for providing digital data having high clarity in a digital signal receiver  
In the present invention, input data are extracted by a clock and compared with the previous input data. A cyclic counter is provided for cyclically counting clock signals in each noise erasure...
5315597 Method and means for automatically detecting and correcting a polarlity error in twisted-pair media  
A circuit for incorporation into LAN-compatible devices uses both the link integrity test (LIT) pulses and the end of frame delimiter (EOF) waveform information in received data transmissions to...
5291500 Eight-sample look-ahead for coded signal processing channels  
A signal processing channel and method are described for processing digital sample values corresponding to an incoming analog signal representative of coded binary data. An eight-sample look-ahead...
5226088 Apparatus and methods for active noise suppression in stereo multiplex signals  
Method and apparatus for active noise suppression in stereo multiplex signals particularly in an automotive radio receiver includes an insertion circuit where the disturbed signal section is...
5216677 Data reproducing apparatus  
A data reproducing system is provided wherein data stored in an optical disk can be read and, in accordance with a coded error detection and correction code, can have an error pointer defined in...
5138636 Circuit for detecting received signal loss in a digital signal receiver  
A signal loss detection circuit, for detecting signal loss in a digital signal receiver of the type including a clock recovery circuit for reconstituting the received clock in such a manner that...
5073932 Secured data transmission and error recovery mechanism in cordless telephones  
A novel method is disclosed that facilitates secured transmission of data between the transmitting and receiving ends of a cordless telephone by encapsulating the desired command in a message code....
5054017 Optical information reproducing apparatus  
In the reproduction of data from one of N-frame sectors of an optical disk, data marks representing the front ends of the respective frames of a desired sector are detected and counted. When the...
5051998 Data block deinterleaving and error correction system  
A deinterleaving and error correction system which is advantageously utilized in a playback system of an optical recording disk apparatus. As each block of sector data, encoded for example with the...
4920540 Fault-tolerant digital timing apparatus and method  
Computer timing apparatus enables two clock elements to produce a single stream of timing pulses, without interruption, when both elements are operating normally, and when one element fails. The...
4853798 Method and apparatus for reproducing digital or analog signals  
A tape player includes digital and analog reproducing sections for playing back a magnetic tape having recorded thereon encoded digital data arranged in data blocks and an analog signal running...
4754467 Digital signal detection with signal buffering and message insertion  
An improved digital signal detector for indicating the presence of digital data used in a communication system. While attempting to detect valid data, the detector buffers an incoming signal in a...
4605921 Digital word-framing technique and system  
A method is provided for decoding an encoded signal that includes a series of encoded digital data messages. Each message is encoded in such a way that each bit thereof is contained in the ordering...
4593392 Error correction circuit for digital audio signal  
In an error correction circuit of the type in which a received audio signal is passed to the error correction output when no error is detected and wherein a substitute signal, e.g. either a...
4590432 Constant-percent break pulse corrector  
Constant-percent break interval pulse correctors insure that the break interval of a dial pulse subsists for a substantially constant percentage of the total pulse interval; i.e., break interval...
4519001 Apparatus for providing dropout compensation and error concealment in a PAL format video information signal  
Apparatus is disclosed for providing error compensation of a video information signal having a PAL format. Sampling of the analog PAL format video information signal is done at a rate of four times...
4517600 Error concealment system using dropout severity information for selection of concealment method  
An error concealment system for a digital video signal uses different methods of concealment in accordance with the severity of the error. An adaptive estimate (horizontal or vertical average) is...
4516121 Transmission control system  
In the system where multiple devices share one circuit by a sequential transmission system, each of the devices is adopted to monitor the transmission from a device one stage before the device...
4388732 Fiber optic data link  
A fiber optic data link between two points includes a transmitter which serially encodes data and transmits pulses at one rate if DTR is active at the transmitter and at another rate if it is not...
4383317 Shaft angle encoder having a circuit for synthesizing a skipped track output signal  
A shaft angle encoder for producing a multiplicity of output signals corresponding to a multidigit binary code word representing the angular position of the shaft, comprising a rotatable code...
4377820 Adaptive error concealment  
Method and apparatus for replacing defective video information in a video signal line comprises sampling the video signal. Video information from the preceding in-phase pixel and the subsequent...
4342112 Error checking circuit  
An error checking circuit is provided for a digital transmission system having a dual, redundant, bus structure. The error checking circuit generates a two rail logic output having complementary...
4328580 Apparatus and an improved method for processing of digital information  
The present invention involves an apparatus and method for processing of digital information that includes duplication of information from each channel of a multi-channel recorder on main and...
4315331 Apparatus for providing drop-out compensation in recording and reproducing systems  
Apparatus is disclosed for providing compensation for missing, incorrect or otherwise defective data in a data stream preferably comprised of video information. The apparatus is particularly useful...
4292684 Format for digital tape recorder  
A recorder for storage and retrieval of digitized signals on a single track of a suitable record medium is disclosed. The recorder includes networks for partitioning digitized audio signals into...
4255807 Error testing of recording media such as magnetic tape  
Process and apparatus for detecting and evaluating defects in memory-retaining characteristics of magnetic tape, said process and apparatus providing means for sensing an initial error in a first...
4146099 Signal recording method and apparatus  
Signal recording method and apparatus for efficiently correcting a bit error due to dropout occurred in recording an analog data into a digital data and reproducing the digital data is disclosed....
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