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公开(公告)号：US11012091B2
公开(公告)日：2021-05-18
申请号：US16474568
申请日：2018-02-27
发明人： Seiji Kobayashi , Masanori Sato , Nabil Loghin , Toshihiro Fujiki , Ryoji Ikegaya , Hiroyuki Kamata , Yusuke Yoneyama , Kimiya Kato , Akira Endo , Sawako Kiriyama , Hiroyuki Mita , Hideshi Motoyama , Hiroshi Aoki , Daisuke Kawakami
摘要： LDPC coding is executed using a check matrix of an LDPC code whose code length is 736 bits and whose code rate is 1/4, and modulation is executed using a repetition unit that has an LDPC code obtained by the LDPC coding, repeatedly arranged therein. The LDPC code includes information bits and parity bits, the check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits, the parity matrix portion has a stepwise structure, the information matrix portion is indicated by a check matrix initial value table, and the check matrix initial value table is a predetermined table indicating positions of elements of “1” of the information matrix portion for each eight columns. This technique is applicable to, for example, information transmission using the LDPC code.
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公开(公告)号：US12081994B2
公开(公告)日：2024-09-03
申请号：US17432493
申请日：2020-02-03
IPC分类号： H04W16/14 , H04L5/00 , H04W56/00 , H04W72/0453
CPC分类号： H04W16/14 , H04L5/003 , H04W56/0015 , H04W72/0453
摘要： A communication device includes an acquisition unit configured to acquire first information for communication in which a first frequency band has been used, the first frequency band being an unlicensed band in which a plurality of communication schemes can be mixed, from a second frequency band different from the first frequency band, and a communication control unit configured to control communication in a predetermined communication scheme in which the first frequency band has been used, on the basis of the first information.
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3.发明授权公开(公告)号：US11310628B2
公开(公告)日：2022-04-19
申请号：US17040529
申请日：2019-02-06
摘要： An object of the present invention is to secure a relative relationship when positions are displayed by use of position information transmitted from a plurality of wireless communication devices. Each of the wireless communication devices of the present invention includes a position information acquisition unit and a transmission unit. The position information acquisition unit acquires the position information of the wireless communication devices by the GPS, for example. At that time, the position information acquisition unit also acquires time information when the position information is acquired. The transmission unit transmits transmission data including the position information and the time information when the position information is acquired in a predetermined transmission slot.
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公开(公告)号：US11470578B2
公开(公告)日：2022-10-11
申请号：US17054168
申请日：2019-05-07
发明人： Seiji Kobayashi , Toshihiro Fujiki , Nobuo Kato , Yusuke Yoneyama
摘要： The present technology relates to a transmission device, a transmission method, a reception device, a reception method, and a communication method capable of shortening a pause time of data transmission.
According to an aspect of the present technology, a transmission device classifies channels usable for data transmission into a plurality of groups, selects the channels that are used in transmission units and that continue on a time axis from the channels of the different groups in accordance with an identifier, and performs the data transmission of the transmission units by using the selected channels. It is possible to make application to a communication system transmitting data through one-way communication from a transmission device to a reception device.-
公开(公告)号：US11528260B2
公开(公告)日：2022-12-13
申请号：US17265820
申请日：2019-09-06
发明人： Toshihiro Fujiki
摘要： The present disclosure relates to a transmitting device and a transmitting method, and a receiving device and a receiving method which are capable of improving confidentiality and communication resistance in low power wide area (LPWA) communication.
The transmitting device generates a key stream on the basis of GPS time information, encrypts transmitted data on the basis of the key stream to generate encrypted data, and transmits the encrypted data to the receiving device. The receiving device generates a key stream on the basis of GPS time information and decodes the encrypted data into the transmitted data on the basis of the key stream. The present disclosure can be applied to an LPWA communication system.-
公开(公告)号：US11452150B2
公开(公告)日：2022-09-20
申请号：US17057123
申请日：2019-05-17
摘要： The present technology relates to an information processing device, an information processing method, a transmitter, a transmission method, a receiver, and a reception method which can provide setting information necessary for each receiver. An information processing device of one aspect of the present technology holds non-common setting information that is not common setting information among setting information used in transmitters for setting for transmitting information in association with identification information of the respective transmitters. In addition, the information processing device transmits, to a receiver that has received identification information transmitted from a predetermined transmitter using common setting information that is setting information common in the plurality of transmitters, the non-common setting information associated with the identification information received by the receiver. The present technology can be applied, for example, to a communication system in which data is transmitted from a transmitter to a receiver through unidirectional communication.
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公开(公告)号：US11848770B2
公开(公告)日：2023-12-19
申请号：US17264306
申请日：2019-07-26
CPC分类号： H04L1/0005 , H04L1/0016 , H04L5/0053 , H04L69/22 , H04W8/26 , H04W72/541 , H04W28/20
摘要： To extend the number of bits of an identifier without affecting the number of data bits to be transmitted. The present disclosure provides a receiving apparatus (1102) that identifies a transmitting apparatus (1101) based on a first identifier (10) having been individually given to each transmitting apparatus in order to identify the transmitting apparatus and a second identifier (20) which is for identifying the transmitting apparatus and which is shared among a plurality of transmitting apparatuses. According to this configuration, the number of bits of an identifier can be extended without affecting the number of data bits.
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公开(公告)号：US10354687B2
公开(公告)日：2019-07-16
申请号：US15774029
申请日：2017-01-06
申请人： SONY CORPORATION
发明人： Toshihiro Fujiki
IPC分类号： G11B7/125 , G11B20/10 , G11B7/0045 , G11B7/00
摘要： There is provided a recording adjustment device, a recording adjustment method, and a program of which enables recording compensation for an optical disc for a high-linear density to be realized. The recording adjustment device according to an embodiment of the present technique executes filter processing on the basis of a regenerative signal obtained by reproducing data recorded in a recording medium, and a recording pattern of marks and spaces of the data, identifies an impulse response of a system, calculates a difference in amplitude between an output from the filter processing after the identification of the impulse response and the regenerative signal every edge type, and detects a slope of a step response in the vicinity of an edge position.
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