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公开(公告)号：US11799538B2
公开(公告)日：2023-10-24
申请号：US17880547
申请日：2022-08-03
Inventor： Yutaka Murakami
IPC: H04B7/15 , H04B7/0413 , H04W40/22 , H04W72/0446
CPC classification number: H04B7/15 , H04B7/0413 , H04W40/22 , H04W72/0446
Abstract: This communication device relays a relay signal to be transmitted to and from a first communication device and a second communication device, and is connected to a first apparatus. The communication device transmits the relay signal using a first transmission slot, and also transmits, using a second transmission slot, a signal having been transmitted from the first apparatus, said signal being transmitted within the transmission period of the first transmission slot in a frequency domain different from that of the first transmission slot.
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公开(公告)号：US11742899B2
公开(公告)日：2023-08-29
申请号：US17875922
申请日：2022-07-28
Inventor： Tomohiro Kimura , Yutaka Murakami , Mikihiro Ouchi
IPC: H04B7/04 , H04B7/0413 , H04B1/16 , H04W4/06 , H04W16/26 , H04W16/28 , H04W76/40 , H04B7/0404 , H04B7/06 , H04B7/08 , H04N21/2365 , H04N21/426 , H04B7/10
CPC classification number: H04B7/0413 , H04B1/16 , H04B7/0404 , H04B7/0697 , H04B7/0874 , H04N21/2365 , H04N21/4263 , H04N21/42615 , H04W4/06 , H04W16/26 , H04W16/28 , H04W76/40 , H04B7/10
Abstract: By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.
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公开(公告)号：US11736165B2
公开(公告)日：2023-08-22
申请号：US17152173
申请日：2021-01-19
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC: H04B7/04 , H04B7/06 , H04B7/0408
CPC classification number: H04B7/0617 , H04B7/0408 , H04B7/061
Abstract: A 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.
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公开(公告)号：US11652676B2
公开(公告)日：2023-05-16
申请号：US16672694
申请日：2019-11-04
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC: H04L27/26 , H04L5/00 , H04B7/0413 , H04J11/00 , H04B7/10
CPC classification number: H04L27/2602 , H04B7/0413 , H04J11/00 , H04L5/0053 , H04L5/0094 , H04L27/2601 , 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.
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公开(公告)号：US11563476B2
公开(公告)日：2023-01-24
申请号：US17171812
申请日：2021-02-09
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
IPC: H04B7/06 , H04B7/0452 , H04L1/06 , H04L1/00 , H04B7/0456 , H04L27/26 , H04B1/707 , H04L27/00
Abstract: A transmission apparatus includes M signal processors that respectively generate modulated signals directed to M reception apparatuses, M being an integer equal to or greater than 2, and an antenna section. Each signal processor modulates a first bit sequence made up of two bits to generate a first modulated signal and a second modulated signal, and modulates a second bit sequence made up of other two bits to generate a third modulated signal and a fourth modulated signal, in a case of transmitting multiple streams to a corresponding one of the M reception apparatuses. The antenna section includes a first antenna that transmits the first modulated signal and the third modulated signal and a second antenna that transmits the second modulated signal and the fourth modulated signal. At least either the signals transmitted from the first antenna or the signals transmitted from the second antenna are phase-changed signals.
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Patent Agency Ranking
公开(公告)号：US11546057B2
公开(公告)日：2023-01-03
申请号：US16868797
申请日：2020-05-07
Inventor： Yutaka Murakami , Nobuhiko Hashida
IPC: H04B10/116 , H04B10/80
Abstract: A mobile terminal is a communication device that communicates using visible light, and includes: a plurality of light emitters, each of which is disposed along the front surface of the mobile terminal and transmits a visible light signal; and a plurality of light receivers, each of which is disposed along the front surface and receives a visible light signal. The plurality of light emitters are disposed on the left side of all of the plurality of light receivers, and the plurality of first light receivers are disposed on the right side of all of the plurality of light emitters.
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公开(公告)号：US11522615B2
公开(公告)日：2022-12-06
申请号：US16902619
申请日：2020-06-16
Inventor： Yutaka Murakami , Nobuhiko Hashida , Ryutaro Monden
IPC: H04B10/116 , H04B10/54 , H04B10/508 , H04B10/516
Abstract: A transmission method includes: in a first period, causing a light source to emit light having a first luminance; and in a second period, causing the light source to transmit an optical signal by causing the light source to alternately emit light having a second luminance and light having a third luminance lower than the second luminance.
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公开(公告)号：US11522584B2
公开(公告)日：2022-12-06
申请号：US16594456
申请日：2019-10-07
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi , Hiroyuki Motozuka
IPC: H04B7/0456 , H04L1/00 , H04H20/42 , H04B7/06 , H04B7/04 , H04B7/0413
Abstract: A transmission method includes encoding processing that generates an encoded block, modulation processing that generates symbols from the encoded block, phase change processing that changes the phase of the symbols, and transmission processing that arranges the symbols in data carriers and transmits the symbols. The transmission processing configures a frame by arranging symbol groups in order in the frequency direction and transmits the frame. The symbol groups each include a symbol generated from a first encoded block and a symbol generated from a second encoded block. The phase change processing includes changing the phase of symbols the same symbol group using the same phase change value.
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公开(公告)号：US11502782B2
公开(公告)日：2022-11-15
申请号：US17245170
申请日：2021-04-30
Inventor： Yutaka Murakami , Tomohiro Kimura , Mikihiro Ouchi
Abstract: One coding method of a plurality of coding methods including at least a first coding method and a second coding method is selected, an information sequence is encoded by using the selected coding method, and an encoded sequence obtained by performing predetermined processing on the information sequence is modulated and transmitted. The first coding method is a coding method having a first coding rate, for generating a first encoded sequence by performing puncturing processing on a generated first codeword by using a first parity check matrix. The second coding method is a coding method having a second coding rate, for generating a second encoded sequence by performing puncturing processing on a generated second codeword by using a second parity check matrix that is different from the first parity check matrix, the second coding rate after the puncturing process being different from the first coding rate.
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公开(公告)号：US11496346B2
公开(公告)日：2022-11-08
申请号：US17191838
申请日：2021-03-04
Inventor： Yutaka Murakami , Yoshio Urabe , Tomohiro Kimura , Mikihiro Ouchi
IPC: H04L27/26 , H04L5/00 , H04B7/0413 , H04B7/00 , H04L1/16 , H04B7/06 , H04B7/0456 , H04J11/00
Abstract: A transmitting method includes: configuring a frame using a plurality of orthogonal frequency-division multiplexing (OFDM) symbols, by allocating a plurality of transmission data to a plurality of areas; and transmitting the frame. The plurality of areas are each identified by at least one time resource among resources and at least one frequency resource among frequency resources. The frame includes a first period in which a preamble is transmitted, and a second period in which the plurality of transmission data are transmitted by at least one of time division and frequency division. The second period includes a first area, and the first area includes a data symbol generated from first transmission data, a data symbol generated from second transmission data and subsequent to the data symbol generated from the first transmission data, and a dummy symbol subsequent to the data symbol generated from the second transmission data.
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