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).

  • Patent number: 8467538
    Abstract: 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: Grant
    Filed: February 27, 2009
    Date of Patent: June 18, 2013
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Tomohiro Nakatani, Takuya Yoshioka, Keisuke Kinoshita, Masato Miyoshi
  • Publication number: 20120288019
    Abstract: 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: Application
    Filed: May 7, 2012
    Publication date: November 15, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shutai OKAMURA, Keisuke KINOSHITA
  • Publication number: 20120287985
    Abstract: 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: Application
    Filed: May 7, 2012
    Publication date: November 15, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shutai OKAMURA, Keisuke KINOSHITA
  • Patent number: 8271277
    Abstract: 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: Grant
    Filed: March 5, 2007
    Date of Patent: September 18, 2012
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Keisuke Kinoshita, Tomohiro Nakatani, Masato Miyoshi
  • Publication number: 20120182197
    Abstract: 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: Application
    Filed: October 29, 2010
    Publication date: July 19, 2012
    Applicant: PANASONIC CORPORATION
    Inventor: Keisuke Kinoshita
  • Publication number: 20120161538
    Abstract: 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: Application
    Filed: December 19, 2011
    Publication date: June 28, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Keisuke KINOSHITA, Junichi KAWAMURA, Shutai OKAMURA
  • Publication number: 20120163619
    Abstract: 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: Application
    Filed: December 19, 2011
    Publication date: June 28, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Keisuke KINOSHITA, Junichi KAWAMURA, Shutai OKAMURA
  • Publication number: 20120063505
    Abstract: 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: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shutai OKAMURA, Keisuke KINOSHITA, Junichi KAWAMURA
  • Publication number: 20120019730
    Abstract: 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: Application
    Filed: December 3, 2009
    Publication date: January 26, 2012
    Applicant: Panasonic Corporation
    Inventors: Kazuaki Suzuki, Keisuke Kinoshita
  • Publication number: 20110002473
    Abstract: 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: Application
    Filed: February 27, 2009
    Publication date: January 6, 2011
    Applicant: Nippon Telegraph and Telephone Corporation
    Inventors: Tomohiro Nakatani, Takuya Yoshioka, Keisuke Kinoshita, Masato Miyoshi
  • Patent number: 7657182
    Abstract: 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: Grant
    Filed: August 3, 2006
    Date of Patent: February 2, 2010
    Assignee: Panasonic Corporation
    Inventors: Kazutoshi Hase, Hideo Yasumoto, Keisuke Kinoshita, Tomoaki Ieda, Hiroyuki Sasai
  • Publication number: 20090248403
    Abstract: 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: Application
    Filed: March 5, 2007
    Publication date: October 1, 2009
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke Kinoshita, Tomohiro Nakatani, Masato Miyoshi
  • Patent number: 7532825
    Abstract: 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: Grant
    Filed: December 20, 2005
    Date of Patent: May 12, 2009
    Assignee: Panasonic Corporation
    Inventor: Keisuke Kinoshita
  • Patent number: 7400836
    Abstract: 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: Grant
    Filed: January 19, 2005
    Date of Patent: July 15, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keisuke Kinoshita, Susumu Morikura
  • Publication number: 20070206952
    Abstract: 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: Application
    Filed: August 3, 2006
    Publication date: September 6, 2007
    Inventors: Kazutoshi Hase, Hideo Yasumoto, Keisuke Kinoshita, Tomoaki Ieda, Hiroyuki Sasai
  • Patent number: 7187740
    Abstract: 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: Grant
    Filed: August 27, 2003
    Date of Patent: March 6, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keisuke Kinoshita, Toshiyuki Kohri, Susumu Morikura
  • Publication number: 20060133825
    Abstract: 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: Application
    Filed: December 20, 2005
    Publication date: June 22, 2006
    Inventor: Keisuke Kinoshita
  • Patent number: 7058300
    Abstract: 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: Grant
    Filed: April 19, 2002
    Date of Patent: June 6, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Keisuke Kinoshita, Satoshi Furusawa, Masaru Fuse, Susumu Morikura
  • Publication number: 20050163505
    Abstract: 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: Application
    Filed: January 19, 2005
    Publication date: July 28, 2005
    Inventors: Keisuke Kinoshita, Susumu Morikura
  • Publication number: 20050089067
    Abstract: 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: Application
    Filed: October 26, 2004
    Publication date: April 28, 2005
    Inventors: Keisuke Kinoshita, Toshiyuki Kohri