| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Method and device for transmitting plural signals | JP15429694 | 1994-06-14 | JPH0758795A | 1995-03-03 | UIRIAMU RUISU BETSUTSU; GOODON BUREMAA; RUUKU JIEI SUMISUUITSUKU; EDOWAADO SAIMON ZURANSUKI |
| PURPOSE: To provide a system for transmitting data signals and voice signals which can widen the dynamic range of the voice signals even when an error is deliberately introduced to the transmission of the data signals. CONSTITUTION: In a communication system, the signal space of a signal point array is divided into a plurality of regions by using an error correcting technique, such as the channel encoding, etc., and at least one region overlaps with another region. Data signals on a line 501 are channel-encoded and selects a specific one of the regions and the region is represented by a reference signal point value. Sound signals on a line 549 are encoded and form a signal point vector and the vector is added to a reference signal point to obtain a signal. The obtained signal is rotated in the overlapping area so as to deliberately introduce an error to a transmitted signal point system. Regardless of the deliberately introduced signal point, a receiver reproduces the original selected reference point value through the channel-encoding of the data signals and simulates the voice signals by using the reference point value. | ||||||
| 22 | Disk controller | JP10707592 | 1992-04-24 | JPH05303539A | 1993-11-16 | TOMIMITSU KOJI |
| PURPOSE: To improve the reliability of the disk controller which has an SCSI controller as a communication means for a host device by providing a self- diagnosing function for the SCSI controller. CONSTITUTION: An I/O.PORT 9 can interrupt a SCSI communication between a SCSI control circuit 7 and the host device regardless of transmitting operation and receiving operation. A system controller 11 transfers test data from a main memory 12 to a buffer memory 5 through the SCSI control circuit 7 when the SCSI communication is interrupted and compares the data transferred to the buffer memory 5 with the test data in the main memory 12 to diagnose the SCSI control circuit 7. COPYRIGHT: (C)1993,JPO&Japio | ||||||
| 23 | JPH029487B2 - | JP24066785 | 1985-10-29 | JPH029487B2 | 1990-03-02 | SHIMODA KANEYASU; YAMASHITA ATSUSHI; KATO TADAYOSHI |
| 24 | System and Method of Belief Propagation Decoding | US14941789 | 2015-11-16 | US20170141796A1 | 2017-05-18 | Toshiaki Koike-Akino; David Millar |
| A method for decoding a codeword transmitted over a channel demodulates data received over the channel to produce an initial estimate of belief messages for bits of the codeword and decodes the codeword using a belief propagation (BP) decoding that iteratively passes the belief messages between a set of variable nodes representing the bits of the codeword and a set of check nodes representing parity-check constraints on the bits of the codeword until a termination condition is met. The BP decoding selects a look-up table based on a probability of the belief messages and maps, using the look-up table, values of at least two incoming belief messages to values of at least one outgoing belief message that forms an incoming belief message in a subsequent iteration of the BP decoding. | ||||||
| 25 | Method and apparatus for valid encoding | US14608319 | 2015-01-29 | US09621303B2 | 2017-04-11 | Ido Bourstein |
| Aspects of the disclosure provide a circuit including an encoding circuit and a valid circuit. The encoding circuit is configured to encode data to be transmitted as signals on a data bus to satisfy a requirement that limits a number of bit transitions between consecutive transmissions. The valid circuit is configured to selectively corrupt the signals not to satisfy the requirement that limits the number of bit transitions between the consecutive transmissions to indicate whether the signals to be transmitted on the data bus constitute valid data or invalid data. | ||||||
| 26 | Manufacturing testing for LDPC codes | US14334532 | 2014-07-17 | US09368233B2 | 2016-06-14 | Yu Kou; Lingqi Zeng |
| An amount of time and an error rate function are received, where the error rate function defines a relationship between a number of iterations associated with iterative decoding and an error rate. A testing error rate is determined based at least in part on the amount of time. The number of iterations which corresponds to the testing error rate in the error rate function is selected to be a testing number of iterations; the testing error rate and the testing number of iterations are associated with testing storage media using iterative decoding. | ||||||
| 27 | Processing data for encoding and decoding a message | US13805441 | 2011-06-17 | US09082173B2 | 2015-07-14 | Gaëtan Le Guelvouit; Sophie Boutiton |
| Processing data for encoding and decoding a message transmitted through a communication channel having adjacent information known during the encoding, the encoding method comprising the construction of a surjective correcting code produced from a characterization of the adjacent information in a system of spherical coordinates. | ||||||
| 28 | Manufacturing testing for LDPC codes | US13571228 | 2012-08-09 | US08819524B2 | 2014-08-26 | Yu Kou; Lingqi Zeng |
| An amount of time and an error rate function are received, where the error rate function defines a relationship between a number of iterations associated with iterative decoding and an error rate. A testing error rate is determined based at least in part on the amount of time. The number of iterations which corresponds to the testing error rate in the error rate function is selected to be a testing number of iterations; the testing error rate and the testing number of iterations are associated with testing storage media using iterative decoding. | ||||||
| 29 | Secure communication using non-systematic error control codes | US13123669 | 2009-10-08 | US08667380B2 | 2014-03-04 | Steven William McLaughlin; Demijan Klinc; Jeongseok Ha |
| A transmitter device (110T) for secure communication includes: an encoder (170) configured to apply a non-systematic error correcting code (NS ECC) to a message, thus producing encoded bits with no clear message bits; and a transceiver (720) configured to transmit the encoded bits over a main channel to a receiver. A method for secure communication includes: encoding a message with an NS ECC to produce an encoded message carrying no message bits in the clear; and transmitting the encoded message over a main channel (120). The NS ECC characteristics result in an eavesdropper channel error probability under a security threshold (320) and a main channel error probability over a reliability threshold (310), whenever an eavesdropper (140) listening on an eavesdropper channel (150) is more than distance Z (220) from the transmitter. Unreliable bits in the encoded bits render the eavesdropper unable to reliably decode messages on the main channel. | ||||||
| 30 | Method for constructing a histogram | US12912688 | 2010-10-26 | US08458547B2 | 2013-06-04 | Krishnamurthy Viswanathan; Ram Swaminathan |
| A method for constructing a histogram can include sampling attributes in a column of a database on a server and determining a bucket set for the histogram based on a number of buckets that represents a distribution of the attributes with minimum error. A bucket in the bucket set includes boundaries and an approximation of a count of attributes falling within the boundaries. The method further includes determining a precision for encoding the approximation, such that the histogram having the bucket set fits within a storage limit on a tangible computer-readable medium. The histogram can then be stored for the database on a tangible computer-readable medium by encoding the approximation with the precision. | ||||||
| 31 | PROCESSING DATA FOR ENCODING AND DECODING A MESSAGE | US13805441 | 2011-06-17 | US20130094691A1 | 2013-04-18 | Gaëtan Le Guelvouit; Sophie Boutiton |
| Processing data for encoding and decoding a message transmitted through a communication channel having adjacent information known during the encoding, the encoding method comprising the construction of a surjective correcting code produced from a characterization of the adjacent information in a system of spherical coordinates. | ||||||
| 32 | ADAPTIVE CONTROLLER FOR A CONFIGURABLE AUDIO CODING SYSTEM | US13111420 | 2011-05-19 | US20120296656A1 | 2012-11-22 | Neil Smyth |
| An adaptive controller for a configurable audio coding system comprising a fuzzy logic controller modified to use reinforcement learning to create an intelligent control system. With no knowledge of the external system into which it is placed the audio coding system, under the control of the adaptive controller, is capable of adapting its coding configuration to achieve user set performance goals. | ||||||
| 33 | Selecting erasure codes for a fault tolerant system | US12243471 | 2008-10-01 | US08250427B2 | 2012-08-21 | John Johnson Wylie; Ram Swaminathan |
| A technique for selecting an erasure code from a plurality of erasure codes for use in a fault tolerant system comprises generating a preferred set of erasure codes based on characteristics of the codes' corresponding Tanner graphs. The fault tolerances of the preferred codes are compared based at least on the Tanner graphs. A more fault tolerant code is selected based on the comparison. | ||||||
| 34 | Bit error probability estimation method and receiver emplying the same | US11565760 | 2006-12-01 | US07844887B2 | 2010-11-30 | Yuan Xia |
| A bit error probability (BEP) estimation method includes de-shaping a coded block to obtain a channel hard output block comprising a header hard output and at least one data hard output, de-puncturing and decoding the header hard output to obtain a decoded header part, determining whether the decoded header part has errors, selecting the decoded header part or a decoded whole block as a selected part based on the determination result, wherein the decoded whole block comprises the decoded header part and a decoded data part obtained by de-puncturing and decoding the data hard output, re-encoding the selected part to obtain a re-encoded decision, and comparing the re-encoded decision to the header hard output or the channel hard output corresponding to the selected part to obtain the BEP of the coded block. A receiver employing the BEP estimation method is also provided in the invention. | ||||||
| 35 | Low-complexity high-performance low-rate communications codes | US11768585 | 2007-06-26 | US07730378B2 | 2010-06-01 | Kai Li; Guosen Yue; Xiaodong Wang; Mohammad Madihian |
| An encoder includes an outer repetition encoder, an interleaver for permuting encoding from said outer repetition encoder; and an inner encoder for encoding information from the interleaver to provide a repeat zigzag-Hadamard code. In an exemplary embodiment, a common bit of a zigzag-Hadamard segment of encoding from said inner encoder is a repetition of a last parity bit of a previous zigzag-Hadamard segment of encoding from said inner encoder and said common bit is punctured. | ||||||
| 36 | Selecting Erasure Codes For A Fault Tolerant System | US12243471 | 2008-10-01 | US20100083069A1 | 2010-04-01 | John Johnson Wylie; Ram Swaminathan |
| A technique for selecting an erasure code from a plurality of erasure codes for use in a fault tolerant system comprises generating a preferred set of erasure codes based on characteristics of the codes' corresponding Tanner graphs. The fault tolerances of the preferred codes are compared based at least on the Tanner graphs. A more fault tolerant code is selected based on the comparison. | ||||||
| 37 | METHOD FOR OPTIMIZING BLOCK CODING PARAMETERS, A COMMUNICATIONS CONTROLLER EMPLOYING THE METHOD AND A COMMUNICATIONS NODE AND LINK EMPLOYING THE CONTROLLER | US12359231 | 2009-01-23 | US20090187807A1 | 2009-07-23 | Rajan L. Narasimha; Nirmal C. Warke |
| A method of determining optimal FEC configuration parameters, a communications controller, a communications link and a communications node is disclosed. In one embodiment, the communications controller, includes: (1) a processor, (2) a communications system information collector configured to receive operational information from a communications system having a block encoder, a block decoder and a decision feedback equalizer, (3) a code determiner configured to employ the operational information to select, from a set of candidate codes, a random error correction code or a burst error correction code that has a least error correction capability and satisfies a target performance specification for the communications system and (4) a parameter selector configured to select configuration parameters associated with the selected random error correction code or the selected burst error correction code and send the selected configuration parameters to the block encoder and the block decoder. | ||||||
| 38 | Modeling error correction capability with estimation of defect parameters | US11261037 | 2005-10-28 | US07552376B2 | 2009-06-23 | Paul J Seger |
| A method, system and program product accurately model the error characteristics of a communications system, such as a tape storage system. Input parameters are entered which describe defect rates and sizes, Codeword Data Structure bytes, and any interleaving factor. Bit defects from simulated defect sources are generated, defined by the starting and ending bits of each defect within a codeword. Any codewords which are defect-free are filtered out and not processed further, thereby increasing the processing speed of the model. Within the defect streams, overlapping defects are merged, redefining defect regions by starting and ending bits. Because only the definitions are processed, not the entire length of the codewords or defects, processing efficiency is further enhanced. The number of defects that occur in each codeword is determined and the probability of the occurrence of N bytes in error per processed codeword may be computed. If desired, a histogram may be generated which includes the rate at which errors occurred and subsequently used to estimate the probability of an error event. Such information may then be incorporated into the design of an error correction code for the modeled system. | ||||||
| 39 | Low-Complexity High-Performance Low-Rate Communications Codes | US11768585 | 2007-06-26 | US20080016426A1 | 2008-01-17 | Kai Li; Guosen Yue; Xiaodong Wang; Mohammad Madihian |
| An encoder includes an outer repetition encoder, an interleaver for permuting encoding from said outer repetition encoder; and an inner encoder for encoding information from the interleaver to provide a repeat zigzag-Hadamard code. In an exemplary embodiment, a common bit of a zigzag-Hadamard segment of encoding from said inner encoder is a repetition of a last parity bit of a previous zigzag-Hadamard segment of encoding from said inner encoder and said common bit is punctured. | ||||||
| 40 | DTV TRANSMITTING SYSTEM AND RECEIVING SYSTEM AND METHOD OF PROCESSING TELEVISION SIGNAL | US11766020 | 2007-06-20 | US20080002765A1 | 2008-01-03 | Won Song; In Choi; Kook Kwak; Byoung Kim; Jin Kim; Hyoung Lee; Jong Kim |
| A digital television transmitting system includes a pre-processor, a packet generator, an RS encoder, and a trellis encoder. The pre-processor pre-processes enhanced data by coding the enhanced data for first forward error correction (FEC) and expanding the FEC-coded enhanced data. The packet generator generates first and second enhanced data packets including the pre-processed enhanced data and main data packets and multiplexes the enhanced and main data packets. The first enhanced data packet includes an adaptation field including the pre-processed enhanced data and second enhanced data packet includes a payload region including the pre-processed enhanced data. The RS encoder performs RS encoding on the multiplexed data packets for second forward error correction (FEC), and the trellis encoder performs trellis encoding on the RS-coded data packets. | ||||||
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