公开(公告)号：US09065611B2

公开(公告)日：2015-06-23

申请号：US14242545

申请日：2014-04-01

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami

IPC: H03M13/11 ,  H04L1/00 ,  H03M13/00 ,  H03M13/23 ,  H03M13/35

CPC classification number: H03M13/2792 ,  H03M13/1102 ,  H03M13/23 ,  H03M13/235 ,  H03M13/353 ,  H03M13/6502 ,  H03M13/6516 ,  H04L1/0041

Abstract: An encoding method changes an encoding rate of an erasure correcting code. One cycle is defined as 12k bits (wherein k represents a natural number) which is an encoding output using LDPC-CC with an encoding rate of 1/2, and includes information and parity. From the one cycle, only the information is arranged in the output order of the encoding output to obtain 6k bit information X6i, X6i+1, X6i+2, X6i+3, X6i+4, X6i+5, . . . , X6(i+k−1) X6(i+k−1)+1, X6(i+k−1)+2, X6(i+k−1)+3, X6(i+k−1)+4, and X6(i+k−1)+5. Known information is inserted in 3k pieces of information (Xj) among the 6k bit information, so that when 3k pieces of mutually different j is divided by 3, there is a remainder of 0 regarding k pieces, there is a remainder of 1 regarding k pieces, and there is a remainder of 2 regarding k pieces, to thereby obtain the parity from the information containing the known information.

Abstract translation: 编码方法改变擦除校正码的编码率。 一个周期被定义为12k位（其中k表示自然数），其是使用编码率为1/2的LDPC-CC的编码输出，并且包括信息和奇偶校验。 从该周期开始，仅以编码输出的输出顺序排列信息，得到6k位信息X6i，X6i + 1，X6i + 2，X6i + 3，X6i + 4，X6i + 5。 。 。 ，X6（i + k-1）X6（i + k-1）+1，X6（i + k-1）+2，X6（i + k-1）+3，X6（i + +4和X6（i + k-1）+5。 将已知信息插入到6k位信息中的3k个信息（Xj）中，使得当3k个相互不同的j被除以3时，对于k个部分存在0的余数，关于k的余数为1 并且对于k个片段存在2的剩余部分，从而从包含已知信息的信息获得奇偶校验。

公开(公告)号：US09065499B2

公开(公告)日：2015-06-23

申请号：US14278979

申请日：2014-05-15

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Masayuki Orihashi ,  Akihiko Matsuoka

IPC: H04L27/00 ,  H04B7/04 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L27/34 ,  H04L5/00 ,  H04B7/06 ,  H04W52/42

CPC classification number: H04L27/0008 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0669 ,  H04L1/0006 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/0618 ,  H04L1/08 ,  H04L5/0046 ,  H04L27/3405 ,  H04W52/42

Abstract: Modulated signal A is transmitted from a first antenna, and modulated signal B is transmitted from a second antenna. As modulated signal B, modulated symbols S2(i) and S2(i+1) obtained from different data are transmitted at time i and time i+1 respectively. In contrast, as modulated signal A, modulated symbols S1(i) and S1(i)′ obtained by changing the signal point arrangement of the same data are transmitted at time i and time i+1 respectively. As a result the reception quality can be changed intentionally at time i and time i+1, and therefore using the demodulation result of modulated signal A of a time when the reception quality is good enables both modulated signals A and B to be demodulated with good error rate performances.

Abstract translation: 从第一天线发送调制信号A，从第二天线发送调制信号B. 作为调制信号B，分别在时间i和时间i + 1发送从不同数据获得的调制符号S2（i）和S2（i + 1）。 相反，作为调制信号A，分别在时间i和时间i + 1发送通过改变相同数据的信号点排列获得的调制符号S1（i）和S1（i）'。 结果，可以在时间i和时间i + 1有意地改变接收质量，因此当接收质量好的时候使用调制信号A的解调结果使得调制信号A和B能够被良好地解调 错误率表现。

公开(公告)号：US09032275B2

公开(公告)日：2015-05-12

申请号：US14229551

申请日：2014-03-28

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami

IPC: H03M13/00 ,  H03M13/11 ,  H03M13/13

CPC classification number: H03M13/1154 ,  H03M13/1105 ,  H03M13/1111 ,  H03M13/13 ,  H03M13/157 ,  H04L1/0041 ,  H04L1/0057

Abstract: An encoding method and encoder of a time-varying LDPC-CC with high error correction performance are provided. In an encoding method of performing low density parity check convolutional coding (LDPC-CC) of a time varying period of q using a parity check polynomial of a coding rate of (n−1)/n (where n is an integer equal to or greater than 2), the time varying period of q is a prime number greater than 3, the method receiving an information sequence as input and encoding the information sequence using Equation 1 as a g-th (g=0, 1, . . . , q−1) parity check polynomial to satisfy 0.

Abstract translation: 提供了具有高纠错性能的时变LDPC-CC的编码方法和编码器。 在使用编码率为（n-1）/ n的奇偶校验多项式（其中n为等于或等于的整数）的奇偶校验多项式的q时变周期的低密度奇偶校验卷积编码（LDPC-CC）的编码方法中， 大于2），q的时变周期是大于3的质数，该方法接收信息序列作为输入，并且使用等式1将信息序列编码为第g（g = 0,1，...）。 ，q-1）奇偶校验多项式满足0。

公开(公告)号：US12273179B2

公开(公告)日：2025-04-08

申请号：US18140980

申请日：2023-04-28

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04B7/10 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/06 ,  H04B7/08

Abstract: Provided is a transmitting device which can expand a communication range when performing multicast/broadcast communication. The transmitting device includes a plurality of transmission antennas, and includes: a signal processor which generates a first baseband signal by modulating data of a first stream, and a second baseband signal by modulating data of a second stream; and a transmitter which generates, from the first baseband signal, first transmission signals having different directivities, generates, from the second baseband signal, second transmission signals having different directivities, and transmits the first transmission signals and the second transmission signals at a same time. When the transmitter has received, from a terminal, a request to transmit the first stream, the transmitter further generates, from the first baseband signal, third transmission signals which are different from the first transmission signals and have different directivities, and transmits the third transmission signals.

公开(公告)号：US12267263B2

公开(公告)日：2025-04-01

申请号：US18591398

申请日：2024-02-29

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04L5/00 ,  H04J1/02 ,  H04J3/02 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26

Abstract: Provided are a frame configuring unit configured to configure a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating time resources and frequency resources to a plurality of transmission data, and a transmitter which transmits the frame. The frame includes a first period in which a preamble which includes information on a frame configuration of the frame is transmitted, a second period in which a plurality of transmission data are transmitted by time division, a third period in which a plurality of transmission data are transmitted by frequency division, and a fourth period in which a plurality of transmission data are transmitted by time division and frequency division.

公开(公告)号：US20250105919A1

公开(公告)日：2025-03-27

申请号：US18969865

申请日：2024-12-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Ryutaro Monden ,  Nobuhiko Hashida

IPC: H04B10/116 ,  H04N23/66 ,  H04N23/67

Abstract: A reception device includes: an image sensor that captures an image, and a reception unit configured to sample a plurality of pixels included in each of N (N being an integer greater than or equal to two) regions included in an imaging surface of the image sensor to receive, in parallel, N mutually different optical signals transmitted from a plurality of light sources.

公开(公告)号：US12207184B2

公开(公告)日：2025-01-21

申请号：US18464090

申请日：2023-09-08

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami

IPC: H04W48/18 ,  H04L1/00 ,  H04L67/56 ,  H04W4/00 ,  H04W4/18 ,  H04W76/15 ,  H04W76/16 ,  H04W88/06 ,  H04W88/14

Abstract: A terminal apparatus includes a receiver and reception signal control circuitry. The receiver, in operation, receives a first downlink data signal transmitted from a first communication station and receives a second downlink data signal transmitted from a first communication station, the first downlink data signal and the second downlink data signal being received over a first downlink channel and a second downlink channel that are at least partially overlapped in time and frequency domain. The reception signal control circuitry, in operation, demodulates the received first downlink data signal and a second downlink data signal.

公开(公告)号：US12170587B2

公开(公告)日：2024-12-17

申请号：US18130043

申请日：2023-04-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H04L27/26 ,  H04B7/0413 ,  H04J11/00 ,  H04L5/00 ,  H04B7/10

Abstract: A transmitting apparatus according to one aspect of the present disclosure transmits a plurality of first transmission data and a plurality of second transmission data by using an OFDM (Orthogonal Frequency-Division Multiplexing) method. The transmitting apparatus includes frame configuring circuitry, which in operation, generates a frame including a first period in which a preamble is transmitted, a second period in which the plurality of first transmission data is multiplexed by a time division multiplexing method and is transmitted, and a third period in which the plurality of second transmission data is multiplexed by a frequency division multiplexing method and is transmitted; and transmitting circuitry that transmits the frame.

公开(公告)号：US12075102B2

公开(公告)日：2024-08-27

申请号：US18131933

申请日：2023-04-07

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura

IPC: H04N21/242 ,  H04H20/18 ,  H04N21/2381 ,  H04N21/462

CPC classification number: H04N21/242 ,  H04H20/18 ,  H04N21/2381 ,  H04N21/462 ,  H04N21/4622

Abstract: Provided is a method for transmitting a broadcasting content and a line content, the broadcasting content and the line content being synchronously displayed, the method including: generating a line parity packet from a plurality of line data packets in each of which the line content is stored; transmitting the line data packet and the line parity packet through a communication line; and transmitting a plurality of broadcasting data packets in each of which the broadcasting content is stored, from a base station using a broadcasting wave, a transfer clock time of the broadcasting content being delayed by a predetermined time compared with a transfer clock time of the line content. At this point, video quality can be improved when the real-time broadcasting program content and the real-time line content are simultaneously displayed.

公开(公告)号：US12074703B2

公开(公告)日：2024-08-27

申请号：US18142720

申请日：2023-05-03

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yutaka Murakami ,  Tomohiro Kimura ,  Mikihiro Ouchi

IPC: H03M13/00 ,  H03M13/25 ,  H04L1/00 ,  H04L1/06 ,  H04L27/34 ,  H03M13/11 ,  H04B7/0413 ,  H04B7/06 ,  H04L27/18

CPC classification number: H04L1/0041 ,  H03M13/255 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/0643 ,  H04L27/34 ,  H03M13/1102 ,  H03M13/1165 ,  H04B7/0413 ,  H04B7/0669 ,  H04L2001/0093 ,  H04L27/18

Abstract: In a transmission method according to one aspect of the present disclosure, a encoder performs error correction coding on an information bit string to generate a code word. A mapper modulates a first bit string in which the number of bits is the predetermined integral multiple of (X+Y) in the code word using a first scheme, the first scheme being a set of a modulation scheme in which an X-bit bit string is mapped to generate a first complex signal and a modulation scheme in which a Y-bit bit string is mapped to generate a second complex signal, and modulates a second bit string in which the first bit string is removed from the code word using a second scheme different from the first scheme.