Patents by Inventor Tetsuo Kanda
Tetsuo Kanda 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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Patent number: 9258475Abstract: A wireless apparatus includes a determination unit configured to determine whether the received control information is leading control information for controlling the imaging process or succeeding control information succeeding the leading control information, a decision unit configured to decide a succeeding control timing at which the succeeding control information is output, with reference to a leading control timing at which the leading control information is output, and an output unit configured to output the leading control information to the imaging unit in accordance with the leading control timing and output the succeeding control information to the imaging unit in accordance with the succeeding control timing.Type: GrantFiled: May 28, 2014Date of Patent: February 9, 2016Assignee: Canon Kabushiki KaishaInventors: Wataru Tachiwa, Tetsuo Kanda
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Apparatus and methods for conducting full-duplex wireless communication with a communication partner
Patent number: 8917637Abstract: A wireless communication apparatus that conducts full-duplex wireless communication with a communication partner using a transmitting antenna and a receiving antenna is provided. The apparatus includes a transmitting unit configured to transmit a signal via the transmitting antenna using a first frequency channel, a receiving unit configured to receive a signal via the receiving antenna using a second frequency channel different from the first frequency channel, and a control unit configured to control beam angle of directionality of at least one of the transmitting antenna and the receiving antenna, so that a direction of a communication path of a signal which the transmitting unit transmits and the communication partner receives, and a direction of a communication path of a signal which the communication partner transmits and the receiving unit receives, differ from each other.Type: GrantFiled: February 5, 2010Date of Patent: December 23, 2014Assignee: Canon Kabushiki KaishaInventors: Tetsuo Kanda, Tadashi Eguchi -
Publication number: 20140362245Abstract: A wireless apparatus includes a determination unit configured to determine whether the received control information is leading control information for controlling the imaging process or succeeding control information succeeding the leading control information, a decision unit configured to decide a succeeding control timing at which the succeeding control information is output, with reference to a leading control timing at which the leading control information is output, and an output unit configured to output the leading control information to the imaging unit in accordance with the leading control timing and output the succeeding control information to the imaging unit in accordance with the succeeding control timing.Type: ApplicationFiled: May 28, 2014Publication date: December 11, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Wataru Tachiwa, Tetsuo Kanda
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Patent number: 8848595Abstract: In a communication system that includes a control station and dependent stations, the control station broadcasts data intended for the dependent stations on a per-superframe basis. The dependent stations relay the data received from the control station among themselves. If a dependent station has received the data transmitted from the control station, the dependent station transmits an acknowledgement response. If a dependent station does not receive an acknowledgement response from another dependent station, then the dependent station relays the data intended for the other dependent station.Type: GrantFiled: July 17, 2009Date of Patent: September 30, 2014Assignee: Canon Kabushiki KaishaInventor: Tetsuo Kanda
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Patent number: 8514950Abstract: A communication apparatus may include a demodulation unit, a waveform memory unit, a decoding unit, an encoding unit, a modulation unit, and a transmission unit. The demodulation unit demodulates a received signal to create a demodulated signal. The waveform memory unit stores the demodulated signal and a waveform of the demodulated signal. The decoding unit decodes the demodulated signal to create a decoded signal. The encoding unit encodes the decoded signal to create an encoded signal. The modulation unit modulates one of the encoded signal to create a modulated encoded signal and the demodulated signal to create a modulated demodulated signal. The transmission unit transmit one of the modulated encoded signal and the modulated demodulated signal according to a reception state of the received signal.Type: GrantFiled: December 18, 2009Date of Patent: August 20, 2013Assignee: Canon Kabushiki KaishaInventors: Norihito Aoki, Tetsuo Kanda
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Patent number: 8468257Abstract: A multiple control station transits a first broadcast frame including a first identifier for identifying a first host and a second broadcast frame including a second identifier for identifying a second host to a terminal station over a wireless channel using time division. The multiple control station then receives a connection request frame that requests connection with the first host or the second host from the terminal station. Arbitration is then performed so that the terminal station is connected to the first host or the second host in accordance with the first identifier or the second identifier included in the received connection request frame.Type: GrantFiled: May 27, 2008Date of Patent: June 18, 2013Assignee: Canon Kabushiki KaishaInventor: Tetsuo Kanda
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Patent number: 8396422Abstract: A device and method for controlling communication among a plurality of communication devices, the device and method including causing each of one or more candidate devices to which control rights of a network are transferable, from among the plurality of communication devices, to transmit a pseudo information signal, counting, for each of the one or more candidate devices, the number of communication devices from the plurality of communication devices having responded to the pseudo information signal, and determining a candidate device to which to transfer control rights of the network based on the number of communication devices from the plurality of communication devices having responded to the pseudo information signal.Type: GrantFiled: October 17, 2006Date of Patent: March 12, 2013Assignee: Canon Kabushiki KaishaInventors: Atsushi Takasaki, Tetsuo Kanda
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Patent number: 8099653Abstract: A communication apparatus includes a plurality of descramblers for subjecting a second header portion of a received frame to descrambling processing using pseudo-random sequences that differ from one another; a plurality of syndrome arithmetic units for performing a syndrome calculation, which is in accordance with a cyclic redundancy check code, with respect to headers descrambled by respective ones of the plurality of descramblers, and an error correction unit for selecting a header that has been descrambled by one descrambler among the plurality of descramblers as a receive header, in accordance with syndrome values calculated by respective ones of the plurality of syndrome arithmetic units.Type: GrantFiled: April 27, 2006Date of Patent: January 17, 2012Assignee: Canon Kabushiki KaishaInventors: Tetsuo Kanda, Tadashi Eguchi
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Publication number: 20110317746Abstract: A communication apparatus may include a demodulation unit, a waveform memory unit, a decoding unit, an encoding unit, a modulation unit, and a transmission unit. The demodulation unit demodulates a received signal to create a demodulated signal. The waveform memory unit stores the demodulated signal and a waveform of the demodulated signal. The decoding unit decodes the demodulated signal to create a decoded signal. The encoding unit encodes the decoded signal to create an encoded signal. The modulation unit modulates one of the encoded signal to create a modulated encoded signal and the demodulated signal to create a modulated demodulated signal. The transmission unit transmit one of the modulated encoded signal and the modulated demodulated signal according to a reception state of the received signal.Type: ApplicationFiled: December 18, 2009Publication date: December 29, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Norihito Aoki, Tetsuo Kanda
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Publication number: 20110317595Abstract: A wireless communication apparatus that conducts full-duplex wireless communication with a communication partner using a transmitting antenna and a receiving antenna is provided. The apparatus includes a transmitting unit configured to transmit a signal via the transmitting antenna using a first frequency channel, a receiving unit configured to receive a signal via the receiving antenna using a second frequency channel different from the first frequency channel, and a control unit configured to control beam angle of directionality of at least one of the transmitting antenna and the receiving antenna, so that direction of a communication path of a signal which the transmitting unit transmits and the communication party receives, and direction of a communication path of a signal which the communication party transmits and the receiving unit receives, differ from each other.Type: ApplicationFiled: February 5, 2010Publication date: December 29, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Kanda, Tadashi Eguchi
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Patent number: 8081998Abstract: A communication control technique that makes it possible to avoid interference with another wireless communication system. To realize this technique, a tributary station according to the present invention transmits a beacon in an asynchronous BP after being started up, thereby determining whether or not another wireless communication network has received that beacon, and in the case where it has been determined that the other wireless communication network has received the beacon, the tributary station decreases its transmission power until the beacon is no longer received by the other wireless communication network.Type: GrantFiled: July 25, 2008Date of Patent: December 20, 2011Assignee: Canon Kabushiki KaishaInventor: Tetsuo Kanda
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Patent number: 8046021Abstract: There is provided a communication control technique in which it is possible to avoid interference with another wireless communication system. This invention is characterized by a control station which controls wireless communication of dependent stations. When a dependent station newly starts, the control station determines whether a beacon transmitted by the dependent station is received by another wireless communication network. When determining that the beacon is received by the other wireless communication network, the control station instructs the dependent station to lower the transmission power until the beacon is not received.Type: GrantFiled: July 8, 2008Date of Patent: October 25, 2011Assignee: Canon Kabushiki KaishaInventor: Tetsuo Kanda
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Patent number: 7997152Abstract: A magnetostrictive torque sensor that detects a torque of a rotating shaft and/or a stationary shaft by using a magnetostriction inverse effect that occurs on a shaft surface, the magnetostrictive torque sensor includes a first detection coil, a second detection coil, a first oscillation circuit, a second oscillation circuit, a first direction magnetic permeability detector, a second direction magnetic permeability detector, and a torque detector.Type: GrantFiled: December 19, 2007Date of Patent: August 16, 2011Assignee: Azuma Shokai Co., Ltd.Inventors: Kazuhiro Yamakawa, Tetsuo Kanda
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Publication number: 20110096716Abstract: In a communication system comprising a control station (101) and a plurality of dependent stations (102, . . . , 105), the control station (101) broadcasts data intended for the plurality of dependent stations (102, . . . , 105) on a per-superframe basis. The plurality of dependent stations relay the data, which has been received from the control station (101), among themselves. If a dependent station (102) has received the data transmitted from the control station (101), this dependent station (102) transmits an acknowledgement response. If a dependent station (102) does not receive an acknowledgement response from another dependent station (103), then this dependent station (102) relays the data intended for this other dependent station (103).Type: ApplicationFiled: July 17, 2009Publication date: April 28, 2011Inventor: Tetsuo Kanda
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Patent number: 7742743Abstract: A communication system makes throughput preferable by reducing wireless frame collision which occurs when a plurality of control stations cannot recognize one another. When a wireless communication device that is operating as a dependent station of a first control station detects a second control station, DEVice operates as a dependent control station. Accordingly, the second control station is changed to a dependent station or a dependent control station.Type: GrantFiled: August 8, 2006Date of Patent: June 22, 2010Assignee: Canon Kabushiki KaishaInventor: Tetsuo Kanda
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Publication number: 20100101336Abstract: A magnetostrictive torque sensor that detects a torque of a rotating shaft and/or a stationary shaft by using a magnetostriction inverse effect that occurs on a shaft surface, the magnetostrictive torque sensor includes a first detection coil, a second detection coil, a first oscillation circuit, a second oscillation circuit, a first direction magnetic permeability detector, a second direction magnetic permeability detector, and a torque detector.Type: ApplicationFiled: December 19, 2007Publication date: April 29, 2010Applicant: AZUMA SYSTEMS CO., LTD.Inventors: Kazuhiro Yamakawa, Tetsuo Kanda
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Publication number: 20090063936Abstract: A communication apparatus includes a plurality of descramblers for subjecting a second header portion of a received frame to descrambling processing using pseudo-random sequences that differ from one another; a plurality of syndrome arithmetic units for performing a syndrome calculation, which is in accordance with a cyclic redundancy check code, with respect to headers descrambled by respective ones of the plurality of descramblers, and an error correction unit for selecting a header that has been descrambled by one descrambler among the plurality of descramblers as a receive header, in accordance with syndrome values calculated by respective ones of the plurality of syndrome arithmetic units.Type: ApplicationFiled: April 27, 2006Publication date: March 5, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Kanda, Tadashi Eguchi
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Publication number: 20090047988Abstract: A communication control technique that makes it possible to avoid interference with another wireless communication system. To realize this technique, a tributary station according to the present invention transmits a beacon in an asynchronous BP after being started up, thereby determining whether or not another wireless communication network has received that beacon, and in the case where it has been determined that the other wireless communication network has received the beacon, the tributary station decreases its transmission power until the beacon is no longer received by the other wireless communication network.Type: ApplicationFiled: July 25, 2008Publication date: February 19, 2009Applicant: CANON KABUSHIKI KAISHAInventor: Tetsuo Kanda
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Publication number: 20090047907Abstract: To adjust reception sensitivity suitable for avoiding cross-interference with another wireless communication system with an easy method. In order to achieve the above object, a control station that controls wireless communication of a dependent station determines whether or not a beacon received by the dependent station includes a beacon transmitted by a wireless terminal that is operated in asynchronization with the control station, and continues to transmit an instruction to lower the reception sensitivity of the dependent station to the dependent station until the beacon received by the dependent station does not include a beacon transmitted by the asynchronous wireless terminal.Type: ApplicationFiled: July 31, 2008Publication date: February 19, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuo Kanda, Tadashi Eguchi
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Publication number: 20090036151Abstract: There is provided a communication control technique in which it is possible to avoid interference with another wireless communication system. This invention is characterized by a control station which controls wireless communication of dependent stations. When a dependent station newly starts, the control station determines whether a beacon transmitted by the dependent station is received by another wireless communication network. When determining that the beacon is received by the other wireless communication network, the control station instructs the dependent station to lower the transmission power until the beacon is not received.Type: ApplicationFiled: July 8, 2008Publication date: February 5, 2009Applicant: CANON KABUSHIKI KAISHAInventor: Tetsuo Kanda