Patents by Inventor Keisuke Kinoshita
Keisuke Kinoshita 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: 8467538Abstract: A sound source model storage section stores a sound source model that represents an audio signal emitted from a sound source in the form of a probability density function. An observation signal, which is obtained by collecting the audio signal, is converted into a plurality of frequency-specific observation signals each corresponding to one of a plurality of frequency bands. Then, a dereverberation filter corresponding to each frequency band is estimated by using the frequency-specific observation signal for the frequency band on the basis of the sound source model and a reverberation model that represents a relationship for each frequency band among the audio signal, the observation signal and the dereverberation filter. A frequency-specific target signal corresponding to each frequency band is determined by applying the dereverberation filter for the frequency band to the frequency-specific observation signal for the frequency band, and the resulting frequency-specific target signals are integrated.Type: GrantFiled: February 27, 2009Date of Patent: June 18, 2013Assignee: Nippon Telegraph and Telephone CorporationInventors: Tomohiro Nakatani, Takuya Yoshioka, Keisuke Kinoshita, Masato Miyoshi
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Publication number: 20120288019Abstract: A power receiving apparatus is usable in a system for wirelessly transmitting power and is capable of transmitting data to a power transmitting apparatus. The power receiving apparatus includes a power receiving section configured to receive power transmitted from the power transmitting apparatus as being converted into a pulse train; a variable load connected to the power receiving section; and a control section configured to change a load value of the variable load in accordance with a value of the data, such that in a state where the power is being transmitted from the power transmitting apparatus, a value of each of pulses included in the pulse train flowing in from the power transmitting apparatus is changed during a duration thereof.Type: ApplicationFiled: May 7, 2012Publication date: November 15, 2012Applicant: PANASONIC CORPORATIONInventors: Shutai OKAMURA, Keisuke KINOSHITA
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Publication number: 20120287985Abstract: A power transmitting apparatus is usable for wireless power and data transmission. The power transmitting apparatus includes a power transmitting section configured to transmit power and data to be transmitted as being converted into a pulse train; and a control section configured to control the power transmitting section such that a change of the power caused by superimposition of the data is decreased.Type: ApplicationFiled: May 7, 2012Publication date: November 15, 2012Applicant: PANASONIC CORPORATIONInventors: Shutai OKAMURA, Keisuke KINOSHITA
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Patent number: 8271277Abstract: A model application unit calculates linear prediction coefficients of a multi-step linear prediction model by using discrete acoustic signals. Then, a late reverberation predictor calculates linear prediction values obtained by substituting the linear prediction coefficients and the discrete acoustic signals into linear prediction term of the multi-step linear prediction model, as predicted late reverberations. Next, a frequency domain converter converts the discrete acoustic signals to discrete acoustic signals in the frequency domain and also converts the predicted late reverberations to predicted late reverberations in the frequency domain. A late reverberation eliminator calculates relative values between the amplitude spectra of the discrete acoustic signals expressed in the frequency domain and the amplitude spectra of the predicted late reverberations expressed in the frequency domain, and provides the relative values as predicted amplitude spectra of a dereverberation signal.Type: GrantFiled: March 5, 2007Date of Patent: September 18, 2012Assignee: Nippon Telegraph and Telephone CorporationInventors: Keisuke Kinoshita, Tomohiro Nakatani, Masato Miyoshi
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Publication number: 20120182197Abstract: A wireless receiver including a dipole antenna and a circuit board, wherein high directivity characteristics can be acquired for wireless signals is provided. The wireless receiver includes a balanced feed antenna and a circuit board arranged in parallel to the longitudinal direction of the aforementioned balanced feed antenna. A conductive pattern formed on the aforementioned circuit board is composed of two or more partial patterns arranged with a gap interposed therebetween. The gap is formed at a position in between both ends of the aforementioned balanced feed antenna.Type: ApplicationFiled: October 29, 2010Publication date: July 19, 2012Applicant: PANASONIC CORPORATIONInventor: Keisuke Kinoshita
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Publication number: 20120161538Abstract: A wireless power transmission system transmits power wirelessly from a power transmitter to a power receiver. The power transmitter includes a class E amplifier, a transmitting-end resonant circuit, a detector that detects a voltage or current waveform at a predetermined position in the class E amplifier in accordance with the impedance of the transmitting-end resonant circuit as viewed from the class E amplifier, and a signal extractor that extracts a signal according to the waveform. The power receiver includes a receiving-end resonant circuit, a rectifier circuit, a power reproducing section, and an impedance changer connected between the rectifier circuit and the power reproducing section to change its impedance. When the impedance is changed, the detector detects the waveform variation and the signal extractor extracts and outputs a signal corresponding to the waveform detected by the detector.Type: ApplicationFiled: December 19, 2011Publication date: June 28, 2012Applicant: PANASONIC CORPORATIONInventors: Keisuke KINOSHITA, Junichi KAWAMURA, Shutai OKAMURA
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Publication number: 20120163619Abstract: The transmitter of a wireless power transmission audio system includes: a transmission signal generating section for generating a transmission signal comprised of an RF signal; a first resonant circuit which receives and sends out the transmission signal; a detecting section for sensing a variation in the transmission signal; and a transmission signal adjusting section. The loudspeaker of the system includes: a second resonant circuit for receiving the transmission signal by producing a magnetic field resonant coupling phenomenon; and an audio output section for reproducing the audio signal. At least one of the transmitter and the loudspeaker includes an impedance adjusting section which changes an impedance value on the transmission line of the transmission signal. When the impedance adjusting section changes the impedance value, the transmission signal adjusting section changes the signal waveform of the transmission signal.Type: ApplicationFiled: December 19, 2011Publication date: June 28, 2012Applicant: PANASONIC CORPORATIONInventors: Keisuke KINOSHITA, Junichi KAWAMURA, Shutai OKAMURA
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Publication number: 20120063505Abstract: A power transmitter 50 is usable in a wireless power transmission system for transmitting power wirelessly. The power transmitter 50 includes a power transmitting section 51 for transmitting power; a communication section 52 for communicating information, for controlling the transmission of the power, with the power receiver 60; and a control section 53 for controlling the power transmitting section 51 such that the power to be sent out by the power transmitting section 51 is higher while the communication section 52 is performing the communication.Type: ApplicationFiled: September 8, 2011Publication date: March 15, 2012Applicant: PANASONIC CORPORATIONInventors: Shutai OKAMURA, Keisuke KINOSHITA, Junichi KAWAMURA
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Publication number: 20120019730Abstract: The receiver diversity-receives radio wave with a plurality of antennas. The receiver includes a conductive case having a receiving section for executing diversity-receiving processing, a first through hole and a second through hole that are disposed on the surface of the same side of the case and penetrate the case from the outside to the inside, a first antenna and a second antenna for supplying a received signal to the receiving section, and a first hinge and a second hinge that are fixed to the inside of the case, pass the first through hole and the second through hole, directly or indirectly support the first antenna and the second antenna, and are movable, respectively. A partition is disposed between the first through hole and the second through hole.Type: ApplicationFiled: December 3, 2009Publication date: January 26, 2012Applicant: Panasonic CorporationInventors: Kazuaki Suzuki, Keisuke Kinoshita
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Publication number: 20110002473Abstract: A sound source model storage section stores a sound source model that represents an audio signal emitted from a sound source in the form of a probability density function. An observation signal, which is obtained by collecting the audio signal, is converted into a plurality of frequency-specific observation signals each corresponding to one of a plurality of frequency bands. Then, a dereverberation filter corresponding to each frequency band is estimated by using the frequency-specific observation signal for the frequency band on the basis of the sound source model and a reverberation model that represents a relationship for each frequency band among the audio signal, the observation signal and the dereverberation filter. A frequency-specific target signal corresponding to each frequency band is determined by applying the dereverberation filter for the frequency band to the frequency-specific observation signal for the frequency band, and the resulting frequency-specific target signals are integrated.Type: ApplicationFiled: February 27, 2009Publication date: January 6, 2011Applicant: Nippon Telegraph and Telephone CorporationInventors: Tomohiro Nakatani, Takuya Yoshioka, Keisuke Kinoshita, Masato Miyoshi
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Patent number: 7657182Abstract: An optical transmission apparatus is provided in which high optical output power is secured in an optical transmitter, the fine adjustment of the optical axis is unnecessary, and the propagation range of the optical output signal can be adaptively changed. A diffusing liquid lens includes a first liquid and a second liquid containing a scattering material that scatters light, and the curvature of the boundary surface between the first and the second liquids is changed according to the control voltage applied from a controlling unit. A first optical signal outputted from a light emitting device is diffused in the first liquid, and emitted as a second optical signal having a spread angle corresponding to the curvature of the boundary surface and a substantially uniform radiant intensity distribution.Type: GrantFiled: August 3, 2006Date of Patent: February 2, 2010Assignee: Panasonic CorporationInventors: Kazutoshi Hase, Hideo Yasumoto, Keisuke Kinoshita, Tomoaki Ieda, Hiroyuki Sasai
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Publication number: 20090248403Abstract: A model application unit calculates linear prediction coefficients of a multi-step linear prediction model by using discrete acoustic signals. Then, a late reverberation predictor calculates linear prediction values obtained by substituting the linear prediction coefficients and the discrete acoustic signals into linear prediction term of the multi-step linear prediction model, as predicted late reverberations. Next, a frequency domain converter converts the discrete acoustic signals to discrete acoustic signals in the frequency domain and also converts the predicted late reverberations to predicted late reverberations in the frequency domain. A late reverberation eliminator calculates relative values between the amplitude spectra of the discrete acoustic signals expressed in the frequency domain and the amplitude spectra of the predicted late reverberations expressed in the frequency domain, and provides the relative values as predicted amplitude spectra of a dereverberation signal.Type: ApplicationFiled: March 5, 2007Publication date: October 1, 2009Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Keisuke Kinoshita, Tomohiro Nakatani, Masato Miyoshi
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Patent number: 7532825Abstract: An optical signal emitted from an optical transmitter is received and converted into electrical signals by a plurality of photodetectors individually. A plurality of amplifiers individually amplify the electrical signals converted by the respective corresponding photodetectors. A plurality of identification sections individually identify multivalued digital data of the optical signal based on the amplified electrical signals output by the respective corresponding amplifiers. A determination section examines all of a plurality of pieces of digital data output by the plurality of identification sections to determine digital data which is to be output from the optical receiver.Type: GrantFiled: December 20, 2005Date of Patent: May 12, 2009Assignee: Panasonic CorporationInventor: Keisuke Kinoshita
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Patent number: 7400836Abstract: An optical receiving device capable of outputting a control signal and a data signal received as an optical signal, even if a received optical power of an optical signal inputted via an optical fiber fluctuates. An optical-to-electrical conversion section converts the optical signal inputted via the optical fiber to an electrical signal. A received optical power detection section detects a received optical power of the optical signal. A detection level setting section outputs a first detection level value or a second detection level value as a detection level. A comparison section compares the received optical power with the detection level. An output/stop switching section outputs an electrical signal as an output signal when the received optical power is greater than the detection level, and stops outputting the signal when the received optical power Pt is smaller than the detection level Lt.Type: GrantFiled: January 19, 2005Date of Patent: July 15, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Keisuke Kinoshita, Susumu Morikura
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Publication number: 20070206952Abstract: An optical transmission apparatus is provided in which high optical output power is secured in an optical transmitter, the fine adjustment of the optical axis is unnecessary, and the propagation range of the optical output signal can be adaptively changed. A diffusing liquid lens includes a first liquid and a second liquid containing a scattering material that scatters light, and the curvature of the boundary surface between the first and the second liquids is changed according to the control voltage applied from a controlling unit. A first optical signal outputted from a light emitting device is diffused in the first liquid, and emitted as a second optical signal having a spread angle corresponding to the curvature of the boundary surface and a substantially uniform radiant intensity distribution.Type: ApplicationFiled: August 3, 2006Publication date: September 6, 2007Inventors: Kazutoshi Hase, Hideo Yasumoto, Keisuke Kinoshita, Tomoaki Ieda, Hiroyuki Sasai
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Patent number: 7187740Abstract: A communication system is provided in which normal communications can be ensured even upon a loss of synchronization on a part of transmission paths configuring a network. The system is to perform data communications within a network configured by a plurality of devices. A synchronization detecting section detects a loss of synchronization for data transmission between devices connected to each other via the network. Upon detection by the synchronization detecting section of the loss of synchronization, a control information retaining section and a switching section included in the first device cause a connection with the second device to be cut off, and then again cause a connection with the device. Upon connection caused by the switching section between the devices, a connection processing section 16 performs a connecting process for enabling data communications between these devices.Type: GrantFiled: August 27, 2003Date of Patent: March 6, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Keisuke Kinoshita, Toshiyuki Kohri, Susumu Morikura
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Publication number: 20060133825Abstract: An optical signal emitted from an optical transmitter is received and converted into electrical signals by a plurality of photodetectors 12a individually. A plurality of amplifiers 13a individually amplify the electrical signals converted by the respective corresponding photodetectors 12a. A plurality of identification sections 14a individually identify multivalued digital data of the optical signal based on the amplified electrical signals output the respective corresponding amplifiers 13a. A determination section 15 examines all of a plurality of pieces of digital data output by the plurality of identification sections 14a to determine digital data which is to be output from the optical receiver 1.Type: ApplicationFiled: December 20, 2005Publication date: June 22, 2006Inventor: Keisuke Kinoshita
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Patent number: 7058300Abstract: A transmitting-end device generates a pilot signal with a pilot signal generation section, and transmits a pilot signal to a receiving-end device. At the receiving-end device, a transmission rate modification section detects the transmission band of an optical transmission line based on the amplitude of the pilot signal, and decides a data transmission rate acceptable to the receiving-end device by taking into account the transmission band of the optical transmission line. Based on a maximum data transmission data acceptable to the transmitting-end device and the data transmission rate thus decided, a control section in the receiving-end device arbitrates a data transmission rate between it and the transmitting-end device.Type: GrantFiled: April 19, 2002Date of Patent: June 6, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Keisuke Kinoshita, Satoshi Furusawa, Masaru Fuse, Susumu Morikura
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Publication number: 20050163505Abstract: An optical receiving device capable of outputting a control signal and a data signal received as an optical signal, even if a received optical power of an optical signal inputted via an optical fiber 7 fluctuates. An optical-to-electrical conversion section 2 converts the optical signal inputted via the optical fiber 7 to an electrical signal. A received optical power detection section 3 detects a received optical power of the optical signal. A detection level setting section 4 outputs a first detection level value or a second detection level value as a detection level. A comparison section 5 compares the received optical power with the detection level. An output/stop switching section 6 outputs an electrical signal as an output signal when the received optical power is greater than the detection level, and stops outputting the signal when the received optical power Pt is smaller than the detection level Lt.Type: ApplicationFiled: January 19, 2005Publication date: July 28, 2005Inventors: Keisuke Kinoshita, Susumu Morikura
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Publication number: 20050089067Abstract: According to a data transfer apparatus of the present invention, a wait time setting section 14a sets a wait time. The wait time is selected so as to be equal to or greater than a transmission delay time, as detected by a delay time detection section 12a, that is incurred between data transfer apparatuses 1a and 1b, and to guarantee a bandwidth, as detected by a bandwidth detection section 18a, that is required for data signals which require periodic transmission. As a result, it becomes possible to perform a long-distance transmission of data signals which require periodic transmission and sporadically-occurring asynchronous data signal by applying time-multiplex thereto.Type: ApplicationFiled: October 26, 2004Publication date: April 28, 2005Inventors: Keisuke Kinoshita, Toshiyuki Kohri