Patents by Inventor Toshiyuki Nakanishi
Toshiyuki Nakanishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170006359Abstract: A wireless communication device according to one embodiment includes a receiver, processing circuitry and a transmitter. The receiver receives a first signal obtained by a first sensor. The processing circuitry compares first sensing information included in the first signal with second sensing information obtained by a second sensor so as to determine whether or not the first sensing information and the second sensing information are obtained from a same target object. In addition, the transmitter transmits a wireless connection signal, when it is determined that the first sensing information and the second sensing information are obtained from the same target object. The wireless connection signal is a signal to connect one of an own device and an other communication device which has transmitted the first signal to a wireless network formed by the other of the own device and the other communication device.Type: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Applicant: Kabushiki Kaisha ToshibaInventors: Toshihisa NABETANI, Ryoko MATSUO, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Publication number: 20160285507Abstract: According to one embodiment, a wireless device includes a receiver configured to receive a first beacon signal via a first channel; and control circuitry. The control circuitry is configured to: analyze the first beacon signal to obtain channel information for specifying a second channel, change an operation channel of the receiver from the first channel to the second channel, and change, in a case of not receiving a second beacon signal via the second channel during a predetermined period of time, the operation channel of the receiver from the second channel to the first channel. The receiver is further configured to receive a third beacon signal via the first channel after the operation channel is changed from the second channel to the first channel.Type: ApplicationFiled: June 8, 2016Publication date: September 29, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Ryoko MATSUO, Toshihisa NABETANI, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Publication number: 20160278126Abstract: A wireless device performs communication of a first access period and a second access period, the first access period including a plurality of slots in which communication is performed on a slot basis by allocating the slots and the second access period including a plurality of slots in which communication is performed in a contention-based access scheme on a slot basis, and includes a transmitter, a receiver and an control circuitry. The control circuitry performs, when one slot in the second access period is determined, carrier-sensing during a period of time depending on a type of the frame, and controls to transmit via the transmitter the frame at a timing defined depending on the type of the frame after the period of time.Type: ApplicationFiled: May 26, 2016Publication date: September 22, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Ryoko MATSUO, Toshihisa NABETANI, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Publication number: 20160226627Abstract: A communication processing device employing a negative-acknowledgement-based scheme to achieve at least either increased access efficiency or low power consumption. The communication processing device is mounted in a wireless communication device, and includes a communicator and a selector. The communicator receives a notification frame periodically transmitted. The selector performs selection of one scheme from among a positive-acknowledgement-based scheme according to which a response is sent in response to successful reception, and a negative-acknowledgement-based scheme according to which a response is sent in response to unsuccessful reception, the selection being performed in accordance with whether or not the communicator has received the notification frame. The communicator transmits a transmission frame including information requesting to send the response in accordance with the scheme selected by the selector.Type: ApplicationFiled: September 1, 2014Publication date: August 4, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Toshihisa NABETANI, Ryoko MATSUO, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Publication number: 20160183258Abstract: According to one embodiment, a communication processing device mounted in a wireless communication device which uses a first channel and a second channel, includes controlling circuitry. The circuitry is configured to control to transmit, through the first channel, a first announcement signal including channel information of the second channel and control to transmit, through the second channel, a second announcement signal when slot allocation of a target communication device in the second channel is determined to be changed, the second announcement signal including a notification of the change in the slot allocation of the target communication device.Type: ApplicationFiled: March 1, 2016Publication date: June 23, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ryoko MATSUO, Toshihisa NABETANI, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Publication number: 20160183285Abstract: According to one embodiment, a communication processing device is provided which is mounted on a wireless communication device that performs communication using a first channel and performs communication by a communication scheme different from that of the first channel using a second channel. The communication processing device includes a control circuitry to determine whether or not transmission data is data that needs to be preferentially transmitted, specify at least one channel from the first channel and the second channel according to a determination result, and perform control so as to transmit the transmission data using the specified channel.Type: ApplicationFiled: March 1, 2016Publication date: June 23, 2016Applicant: Kabushiki Kaisha ToshibaInventors: Ryoko MATSUO, Toshihisa NABETANI, Toshiyuki NAKANISHI, Hirokazu TANAKA
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Patent number: 8971427Abstract: According to one embodiment, a wireless transceiver system includes a transmitter and a receiver. The transmitter includes a first generator, a second generator, a third generator. The second generator generates fixed data item that has bit values corresponding to the clock signal. The third generator performs OFDM modulation for the fixed data item. The receiver includes a first detector, a second detector, a PLL, a controller. The first detector is configured to detect an envelope that indicates amplitude in a time waveform. The controller is configured to control to operate the PLL from a first time point when the head part is detected to a second time point when a first period is elapsed.Type: GrantFiled: July 19, 2012Date of Patent: March 3, 2015Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Koji Akita, Takahiro Sekiguchi, Toshiyuki Nakanishi
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Publication number: 20150049794Abstract: A communication device includes a signal processing device, a transceiver, and a controller. The signal processing device uses a first signal medium. The transceiver communicates with at least one of first devices by using a second signal medium. The controller controls usage of the first signal medium by the communication device and the at least one of first devices by communicating with the at least one of first devices by the transceiver.Type: ApplicationFiled: July 23, 2014Publication date: February 19, 2015Inventors: Toshiyuki NAKANISHI, Ren SAKATA, Tatsuma HIRANO, Cam Ly NGUYEN
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Patent number: 8947091Abstract: According to one embodiment, an MRI apparatus includes a probe unit and a control/imaging unit. The probe unit includes a probe, a converter, a compressor and a transmitter. The control/imaging unit includes a receiver, an expander and a reconstructor. The probe detects an RF echo signal generated in a subject by a magnetic resonance phenomenon. The converter digitizes the detected signal. The compressor compresses the digitized signal in accordance with a predetermined compression parameter to obtain a compressed signal. The transmitter generates a transmission signal to wirelessly transmit the compressed echo signal and sends the transmission signal to a radio channel. The receiver receives the transmission signal and extracts the compressed signal from the received signal. The expander expands the extracted compressed signal in accordance with the parameter to obtain the RF echo signal. The reconstructor generates a video signal regarding the subject on the basis of the obtained signal.Type: GrantFiled: October 29, 2010Date of Patent: February 3, 2015Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Toshiyuki Nakanishi, Koji Akita, Takahiro Sekiguchi, Kazuya Okamoto, Sojuro Kato
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Publication number: 20150016273Abstract: According to one embodiment, a monitoring apparatus includes a communication unit and a determination unit. The communication unit is configured to calculate a first indicator value and a second indicator value, the first indicator value relating to a received signal strength at a time when a packet transmitted from a first wireless device is received, the second indicator value relating to a received signal strength at a time when carrier sense is executed. The determination unit is configured to determine a state of the first wireless device to be one of three or more states, by performing a state determination using the first indicator value and the second indicator value, with a current state of the first wireless device being set as a basic point.Type: ApplicationFiled: July 8, 2014Publication date: January 15, 2015Inventors: Tatsuma HIRANO, Cam Ly NGUYEN, Toshiyuki NAKANISHI, Ren SAKATA
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Publication number: 20140320348Abstract: According to this embodiment, a position estimating device, that estimates a position of a target wireless device, includes a storage that stores positions of a plurality of reference wireless devices, a receiver which is notified of a received signal strength indicator value in signal transmission and reception between the target wireless device and each reference wireless device, a calculator that calculates a standard deviation for a probability distribution of a distance between the target wireless device and each reference wireless device, using the received signal strength indicator value, a first estimator that calculates an estimated distance between the target wireless device and each reference wireless device, using the received signal strength indicator value, and a second estimator that calculates the position of the target wireless device, using the standard deviation, the estimated distance, and the positions of the plurality of reference wireless devices.Type: ApplicationFiled: March 5, 2014Publication date: October 30, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Cam LY NGUYEN, Ren Sakata, Tatsuma Hirano, Toshiyuki Nakanishi
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Publication number: 20140323037Abstract: A wireless communication device transmits data to a relay destination being one of first relaying devices capable of communicating out of relaying devices; obtains first information, from each first relaying device, that indicates a representative value of remaining operating times of relaying devices present on a relay route from the first relaying device to a target device; determines to perform a new route search, based on the first information; increases a transmission power; then transmits a request; receive responses from all or a part of second relaying devices, which are relaying devices that have received the request, including pieces of second information each of which indicates a representative value of remaining operating times of relaying devices present on a relay route from the second relaying device to the target device; and selects a relay destination of data from among the second relaying devices based on the pieces of second information.Type: ApplicationFiled: February 28, 2014Publication date: October 30, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takaomi MURAKAMI, Shinya MURAI, Takeshi ISHIHARA, Ren SAKATA, Cam Ly NGUYEN, Tatsuma HIRANO, Toshiyuki NAKANISHI, Keiji YAMAMOTO
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Patent number: 8724755Abstract: A receiving apparatus receives a digital modulation signal. The receiving apparatus has a receiving part for down-converting the digital modulation signal to a baseband signal and to obtain channel estimates, a channel estimation part for estimating a multi-path channel, a first replica generation part for generating a first replica, based on the channel estimates obtained by the channel estimation part, a first replica removal part for removing the first replica from a target frame in the baseband signal, a nulling part for forcefully nulling he baseband signal for at least a portion of the time period where an inter-frame interference occurs due to a delay wave having a delay time longer than the known signal, and a cyclic-addition part for performing cyclic-addition between a front side portion and a rear side portion in the target frame, including the portion nulled by the nulling part.Type: GrantFiled: September 20, 2011Date of Patent: May 13, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Nakanishi, Daisuke Takeda, Tatsuhisa Furukawa
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Patent number: 8704522Abstract: In one embodiment, an MRI apparatus includes first and second clock generators, a pulse generator, transmission and reception coils, pulse and phase detectors, and a corrector. The pulse generator generates an excitation pulse signal based on a clock signal generated by the first clock generator. The reception coil outputs a radio frequency signals corresponding to an excitation pulse transmitted from the transmission coil or an MR echo. The converter digitizes, synchronously with a clock signal generated by the second clock generator, the radio frequency signal, to obtain radio frequency data. The pulse detector detects excitation pulse data corresponding to the excitation pulse from the radio frequency data. The phase detector detects a phase of a pulse indicated by the detected excitation pulse data. The corrector corrects the radio frequency data based on the detected phase, to compensate for a phase offset which occurs in the echo during the digitization.Type: GrantFiled: March 15, 2011Date of Patent: April 22, 2014Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems CorporationInventors: Koji Akita, Takahiro Sekiguchi, Toshiyuki Nakanishi, Kazuya Okamoto, Sojuro Kato
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Patent number: 8643362Abstract: According to one embodiment, a apparatus includes a coil, a clock generator, an echo transmitter, a carrier generator, a clock transmitter, a regenerator, an receiver, a reconstructor, a detector, and a controller. The echo transmitter generates and transmits an echo transmission signal synchronously with a clock signal generated by the clock generator to wirelessly transmit an echo signal output from the col. The carrier generator generates a carrier signal have a frequency within a variable range. The clock transmitter wirelessly transmits a clock transmission signal. The regenerator regenerates the clock signal based on the transmitted clock transmission signal. The receiver extracts the echo signal synchronously with the regenerated clock signal from the transmitted echo transmission signal. The detector detects a frequency of an interference wave.Type: GrantFiled: March 15, 2011Date of Patent: February 4, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Takahiro Sekiguchi, Koji Akita, Toshiyuki Nakanishi, Kazuya Okamoto, Sojuro Kato
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Publication number: 20140019819Abstract: According to an embodiment, a receiver includes a generation unit and a scheduler. The generation unit generates a convergence indicator for evaluating a convergence status of the iterative decoding process based on reliability information. The scheduler controls execution of local iteration includes the iterative decoding process terminates and controls execution of global iteration includes alternation between a symbol de-mapping process and an iterative decoding process, based on the convergence indicator.Type: ApplicationFiled: July 5, 2013Publication date: January 16, 2014Inventors: Toshiyuki NAKANISHI, Hironori UCHIKAWA, Zhixiang CHEN
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Patent number: 8502540Abstract: A magnetic resonance imaging apparatus includes a probe unit and a control/imaging unit. The probe unit includes a converter converting a sampled magnetic-resonance signal into a digital signal, a first transmitter converting the digital signal into a first-radio signal, a first receiver receiving and performing detection on the second-radio signal to obtain a first-received signal, and a clock-regeneration unit regenerating a clock component from the first-received signal to generate a regenerated-clock signals. The control/imaging unit includes a second-receiver receiving the first-radio signal to obtain a second-received signal, a data processor performing data processing on the second-received signal in synchronism with a reference-clock signal to obtain a video signal, and a second transmitter which modulates a carrier wave using the reference-clock signal, converts the reference-clock signal into the second-radio signal, and transmits the second-radio signal through the second-wireless channel.Type: GrantFiled: November 9, 2009Date of Patent: August 6, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Nakanishi, Koji Akita, Hideo Kasami, Takahiro Sekiguchi
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Patent number: 8445504Abstract: A pyrazolopyrimidine compound represented by formula (1) that inhibits the function of HSP90 as a chaperone protein and that has antitumor activity, a medicament comprising a compound represented by formula (1), a pharmaceutical composition comprising a compound represented by formula (1), and a method for treating cancer using a compound represented by formula (1).Type: GrantFiled: April 20, 2012Date of Patent: May 21, 2013Assignee: Daiichi Sankyo Company, LimitedInventors: Hitoshi Ohki, Tooru Okayama, Masahiro Ikeda, Masahiro Ota, Yoshihiro Shibata, Toshiyuki Nakanishi, Yasusi Ueda, Nobuyuki Suzuki, Shinji Matuura
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Patent number: 8407470Abstract: A control device being a control device communicating with a controlled device to control the controlled device includes: a first memory to store first authentication information for authenticating the controlled device; a second memory to store second authentication information for making the controlled device authenticate itself; a determination unit to compare third authentication information sent from the controlled device for specifying the controlled device with the first authentication information; a calculator to perform calculation processing on the first authentication information or the third authentication information using the second authentication information to generate a calculated value; a transmitter to transmit, when the determination unit determines that the first authentication information and the third authentication information are the same, the calculated value to the controlled device; and a memory controller to update the first authentication information.Type: GrantFiled: February 2, 2009Date of Patent: March 26, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Nakanishi, Takafumi Sakamoto, Keisuke Mera, Toshiyuki Umeda, Shoji Otaka, Yusuke Doi
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Publication number: 20120321006Abstract: According to one embodiment, a wireless transceiver system includes a transmitter and a receiver. The transmitter includes a first generator, a second generator, a third generator. The second generator generates fixed data item that has bit values corresponding to the clock signal. The third generator performs OFDM modulation for the fixed data item. The receiver includes a first detector, a second detector, a PLL, a controller. The first detector is configured to detect an envelope that indicates amplitude in a time waveform. The controller is configured to control to operate the PLL from a first time point when the head part is detected to a second time point when a first period is elapsed.Type: ApplicationFiled: July 19, 2012Publication date: December 20, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koji AKITA, Takahiro SEKIGUCHI, Toshiyuki NAKANISHI