公开(公告)号：US20170134107A1

公开(公告)日：2017-05-11

申请号：US15398281

申请日：2017-01-04

Applicant: LG ELECTRONICS INC.

Inventor： Jinyong CHOI ,  Byounggill KIM ,  Woochan KIM ,  Jaehyung KIM ,  Woosuk KO ,  Sungryong HONG ,  Chulkyu MUN ,  Jaeho HWANG ,  Jongseob BAEK ,  Kookyeon KWAK ,  Sangchul MOON

IPC: H04H20/44 ,  H04L5/00 ,  H04B7/0413 ,  H04L1/00

CPC classification number: H04H20/44 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/10 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/06 ,  H04L5/0007 ,  H04L5/0023 ,  H04L27/2046 ,  H04L27/34

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting input streams into Data Pipe, DP, data; Low-Density Parity-Check, LDPC, encoding the DP data according to a code rate; bit interleaving the LDPC encoded DP data; mapping the bit interleaved DP data onto constellations according to one of QAM (Quadrature Amplitude Modulation), NUQ (Non-Uniform QAM) or NUC (Non-Uniform Constellation); Multi-Input Multi-Output, MIMO, encoding the mapped DP data by using a MIMO encoding matrix having a MIMO encoding parameter; building at least one signal frame by mapping the MIMO encoded DP data; and modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, method and transmitting the broadcast signals having the modulated data.

公开(公告)号：US20170132055A1

公开(公告)日：2017-05-11

申请号：US14938819

申请日：2015-11-11

Applicant: Hui Wu ,  Yaochao Yang ,  Mike Sapozhnikov ,  Stephen Kolecki

Inventor： Hui Wu ,  Yaochao Yang ,  Mike Sapozhnikov ,  Stephen Kolecki

IPC: G06F11/07 ,  H04L1/00 ,  H04L25/03

CPC classification number: G06F11/076 ,  G06F11/0709 ,  G06F11/0787 ,  H04L1/0045 ,  H04L1/203 ,  H04L25/03197 ,  H04L27/00

Abstract: In one embodiment, physical layer error signatures of a communications link are determined by ascertaining characteristics of erred and correct modulation symbols received by a physical receiver of a communications device, such as, but not limited to, by a receiver of a packet switching device in a communications network normally used to receive data traffic. In one embodiment, a physical receiver of a physical communications device receives a particular modulation symbol and determines whether the received particular modulation symbol is an expected modulation symbol in a predetermined sequence of modulation symbols. One or more storage devices are maintained with one or more error signature measurements based on determining whether the particular modulation symbol is the expected modulation symbol in the predetermined sequence of modulation symbols, with the error signature measurements including performing a comparison to a threshold value or a current maximum value.

公开(公告)号：US20170125029A1

公开(公告)日：2017-05-04

申请号：US15263994

申请日：2016-09-13

Applicant: QUALCOMM Incorporated

Inventor： Venkatraman Atti ,  Daniel Jared Sinder ,  Vivek Rajendran ,  Subasingha Shaminda Subasingha

IPC: G10L19/16 ,  G10L19/07 ,  G10L19/005

CPC classification number: G10L19/167 ,  G10L19/005 ,  G10L19/018 ,  H04L1/0014 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/007 ,  H04L1/0083 ,  H04L1/08 ,  H04L12/66

Abstract: In a particular aspect, an apparatus includes a first network interface. The first network interface is configured to receive a packet via a packet-switched network. The packet may include a primary coding of a first audio frame and a redundant coding of a second audio frame. The apparatus further includes a processor. The processor is configured to generate a modified packet that includes one or more bits that indicate signaling information or packet decoding information. The signaling information or packet decoding information may correspond to decoding of at least one of the primary coding or the redundant coding. The apparatus further includes a second network interface configured to transmit the modified packet via a circuit-switched network.

公开(公告)号：US09641288B2

公开(公告)日：2017-05-02

申请号：US14853352

申请日：2015-09-14

Applicant: LG ELECTRONICS INC.

Inventor： Yonghak Suh ,  Sangchul Moon ,  Jongwoong Shin ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L1/00 ,  H04L5/00 ,  H04L27/12 ,  H04L27/26

CPC classification number: H04L27/2649 ,  H03M13/1102 ,  H03M13/2792 ,  H04L1/0009 ,  H04L1/0023 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0065 ,  H04L1/0071 ,  H04L5/0007 ,  H04L27/12

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to demodulate the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frame parser to parse a signal frame from the demodulated broadcast signals, a bit deinterleaver to bit deinterleave data in the parsed signal frame and a decoder to decode the bit deinterleaved data.

公开(公告)号：US20170117988A1

公开(公告)日：2017-04-27

申请号：US15298394

申请日：2016-10-20

Applicant: FANUC CORPORATION

Inventor： Kazuhiro SATOU

IPC: H04L1/00 ,  H03M13/29 ,  H03M13/13

CPC classification number: H04L1/0076 ,  H03M13/13 ,  H03M13/2906 ,  H03M13/611 ,  H03M13/6508 ,  H03M13/6516 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0058

Abstract: A plurality of units have a transmitter and a receiver. The transmitter puts the unit's own data string into a coding data array using first array information, and calculates an error-correcting code based on the data array in which 0 is put except for the data string. The receiver decodes a data array in which a data string is put into the coding data array based on second array information, using an error-correcting code. The transmitter adds the unit's own data string to a data string, puts the unit's own data string into the coding data array using the first array information on the data string, calculates an error-correcting code for the data array in which 0 is put except for the data string, and determines an error-correcting code of a transmission packet by addition of an error-correcting code of a received packet and the calculated error-correcting code.

公开(公告)号：US09634799B2

公开(公告)日：2017-04-25

申请号：US14689850

申请日：2015-04-17

Applicant: FUJI XEROX CO., LTD.

Inventor： Tsutomu Hamada ,  Yoshinori Awata ,  Atsushi Ugajin

IPC: H03M13/15 ,  H04L1/00 ,  H03M13/19 ,  H03M5/00

CPC classification number: H04L1/0045 ,  H03M5/00 ,  H03M5/14 ,  H03M13/19 ,  H04L1/0042 ,  H04L1/0063

Abstract: Provided is a decoding device including a reception unit that receives data of which the number of bits is converted and encoded such that a ratio between appearance frequency of a first code and appearance frequency of a second code is a predetermined range, and to which an error correcting code including redundant bits for calculating an error position of the data and a parity check bit of the data is appended, and a detection unit that detects that there are an odd number of bit errors in the data when a value of a syndrome corresponding to an error position is a first predetermined value and an error occurs in the decoding, or when the value of the syndrome is not the first value and a value of the parity check bit is a second predetermined value and an error occurs in the decoding on the data.

公开(公告)号：US20170111716A1

公开(公告)日：2017-04-20

申请号：US14887570

申请日：2015-10-20

Applicant: Verizon Patent and Licensing Inc.

Inventor： Glenn A. Wellbrock ,  Tiejun J. Xia

IPC: H04Q11/00 ,  G02B6/42 ,  H04L1/00 ,  H04B10/548 ,  H04B10/50 ,  H04B10/61 ,  G02B6/35 ,  H04J14/02

CPC classification number: H04Q11/0005 ,  G02B6/355 ,  G02B6/4286 ,  H04B10/032 ,  H04B10/501 ,  H04B10/548 ,  H04B10/61 ,  H04J14/02 ,  H04J14/0282 ,  H04J14/029 ,  H04L1/0045 ,  H04Q11/0062 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0079

Abstract: A system includes an optical transmitter and an optical receiver. The optical transmitter includes a first comb light source, a second comb light source, an optical switch configured to selectively switch either the first comb light source or the second comb light source through to an output of the optical switch, and optical modulators configured to apply differential phase modulation, to channels associated with the switched first comb light source or with the second comb light source, to generate modulated light output signals. The optical receiver includes coherent receivers configured to receive the modulated light output signals from the optical transmitter, and detect and process the received, modulated light output signals to generate corresponding digital signals. The optical receiver further includes a digital signal processor configured to apply forward error correction to the digital signals to generate forward error corrected digital signals.

公开(公告)号：US09621392B2

公开(公告)日：2017-04-11

申请号：US15016900

申请日：2016-02-05

Applicant: LG ELECTRONICS INC.

Inventor： Jinyong Choi ,  Woosuk Ko ,  Sangchul Moon ,  Sungryong Hong

IPC: H04L27/06 ,  H04L27/26 ,  H04B7/0456 ,  H04B7/08 ,  H04H20/33

CPC classification number: H04L27/2627 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0682 ,  H04B7/08 ,  H04B7/10 ,  H04H20/33 ,  H04L1/0045 ,  H04L5/0007 ,  H04L27/2602 ,  H04L27/2647 ,  H04L27/2649

Abstract: A method and an apparatus for receiving broadcast signals thereof are disclosed. The method for receiving broadcast signals, the method comprises receiving the broadcast signals, demodulating the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, parsing a signal frame from the demodulated broadcast signals, MIMO (Multiple-Input and Multiple-Output) decoding service data in the parsed signal frame, decoding signaling data in the parsed signal frame and decoding the MIMO decoded service data.

公开(公告)号：US20170093526A1

公开(公告)日：2017-03-30

申请号：US14870031

申请日：2015-09-30

Applicant: Mellanox Technologies TLV Ltd.

Inventor： Liron Mula ,  Ran Ravid ,  Oded Wertheim ,  Ran Sela ,  Roy Kriss

IPC: H04L1/00 ,  H04L29/08

CPC classification number: H04L1/0045 ,  H04L1/0041 ,  H04L1/0053 ,  H04L69/324

Abstract: Communication apparatus includes a PHY interface, which is configured to receive over a communication link and to decode a sequence of symbols arranged in a series of data blocks. The PHY interface includes an error correction circuit, which when actuated, corrects errors in decoded data symbols using FEC symbols in the data blocks. The decoded data include data packets containing respective error detection codes. A memory buffers the data blocks received by the PHY interface. A data link layer interface receives the data packets from the PHY interface, checks the data packets using respective error detection codes, and upon detecting an error in a given data packet, signals the PHY interface to read from the memory at least one buffered data block that contains the given data packet while actuating the error correction circuit to correct the error using the FEC symbols in the at least one buffered data block.

公开(公告)号：US09608768B2

公开(公告)日：2017-03-28

申请号：US14794900

申请日：2015-07-09

Applicant: THOMSON LICENSING

Inventor： Hang Liu ,  Liqiao Han ,  Mingquan Wu ,  Dekai Li ,  Kumar Ramaswamy

IPC: H04L1/00 ,  H04N21/2381 ,  H04N21/262 ,  H04N21/414 ,  H04N21/438 ,  H04N21/4425 ,  H04N21/6437 ,  H04N19/61 ,  H03M13/05 ,  H03M13/00 ,  H04N19/89 ,  H04L29/06 ,  H04N19/164 ,  H03M13/15 ,  H04L12/18 ,  H04W80/04

CPC classification number: H04L1/0042 ,  H03M13/05 ,  H03M13/154 ,  H03M13/6312 ,  H03M13/6527 ,  H04L1/0031 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0047 ,  H04L1/0057 ,  H04L1/0075 ,  H04L1/0079 ,  H04L1/008 ,  H04L1/0083 ,  H04L12/18 ,  H04L65/4076 ,  H04N19/164 ,  H04N19/61 ,  H04N19/89 ,  H04N21/2381 ,  H04N21/26275 ,  H04N21/41407 ,  H04N21/4382 ,  H04N21/4425 ,  H04N21/6437 ,  H04W80/04

Abstract: A method and apparatus for staggercasting are described including encoding and compressing a first data sequence, packetizing the compressed encoded data sequence to form a data packet, performing forward error correction (FEC) encoding on the data packet in order to generate a second data sequence related to the first data sequence, appending FEC control information as padding to the end of payload data of the data packet, packetizing the second data sequence to form a packet, multicasting the data packet to a first multicast group, multicasting the packet formed using the second data sequence delayed by an offset time to a second multicast group.