Patents by Inventor Katsu Takeda

Katsu Takeda 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: 9743186
    Abstract: Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: August 22, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Katsu Takeda, Fumiyasu Konno, Susumu Fukushima, Rihito Shoji
  • Patent number: 9565496
    Abstract: A sound reproduction device includes a modulator having an output terminal for outputting a modulated carrier wave signal obtained by modulating a carrier wave signal in a ultrasonic band with an audible sound signal, a super-directivity loudspeaker connected to the output terminal, a capacitor connected between a ultrasonic wave source and a ground, first and second current detectors for detecting currents flowing through the super-directivity loudspeaker and the capacitor, a high-pass filter for outputting a filtered signal obtained by eliminating a low-frequency band component of the current detected by the first current detector, and a differential amplifier unit for outputting a signal corresponding to a difference between the filtered signal and the current detected by the second current detector. The ultrasonic wave source is configured to output the carrier wave signal such that the signal output from the differential amplifier unit is constant.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: February 7, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Fumiyasu Konno, Katsu Takeda
  • Patent number: 9398127
    Abstract: A portable terminal includes a case, a display unit having a display screen exposed from a front surface of the case, and a skin-condition measurement sensor accommodated in the case. The skin-condition measurement sensor includes a measurement unit provided on the front surface of the case. The portable terminal can be carried and operate easily.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: July 19, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koichi Ikemoto, Hirokazu Kitamura, Yasuhiro Hibino, Takahiro Miyatake, Yoshiyuki Kajimoto, Fumiyasu Konno, Katsu Takeda
  • Patent number: 9253578
    Abstract: In a directional loudspeaker, an audible sound signal that is modulated with a carrier wave in the ultrasonic wave band is input to a piezoelectric element, and thereby a diaphragm having the piezoelectric element is vibrated and a sound wave is generated. In such a directional loudspeaker, the diaphragm is fixed to a fixed part via a plurality of beams disposed along the outer circumference of the diaphragm.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: February 2, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Fumiyasu Konno, Katsu Takeda
  • Patent number: 9100755
    Abstract: In a sound reproducing apparatus, part of a frequency band where mode-coupled vibration can be excited is regarded as a carrier frequency. A frequency of mode coupling, with a low rate of change in vibration displacement with respect to the frequency, is regarded as a carrier signal so that a signal in an audible band which is outputted from an audible band signal source can be demodulated and reproduced with stable sound pressure in a broad frequency band.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: August 4, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Katsu Takeda, Masaki Tada, Masashi Minakuchi, Fumiyasu Konno
  • Publication number: 20150156298
    Abstract: A portable terminal includes a case, a display unit having a display screen exposed from a front surface of the case, and a skin-condition measurement sensor accommodated in the case. The skin-condition measurement sensor includes a measurement unit provided on the front surface of the case. The portable terminal can be carried and operate easily.
    Type: Application
    Filed: June 24, 2013
    Publication date: June 4, 2015
    Inventors: Koichi Ikemoto, Hirokazu Kitamura, Yasuhiro Hibino, Takahiro Miyatake, Yoshiyuki Kajimoto, Fumiyasu Konno, Katsu Takeda
  • Patent number: 9036856
    Abstract: Provided is a sound reproduction device including: a first loudspeaker having directionality utilizing a parametric effect; a second loudspeaker having directionality broader than that of the first loudspeaker; an orientation adjustment unit configured to change an orientation of the first loudspeaker; an information obtaining device configured to obtain positional information of a listener; and a drive controller electrically connected to the first loudspeaker, the second loudspeaker, the orientation adjustment unit, and the information obtaining device, and configured to control the orientation of the first loudspeaker based on the positional information of the listener.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: May 19, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Katsu Takeda, Fumiyasu Konno, Kazuhisa Kotegawa
  • Patent number: 8861774
    Abstract: A sound reproduction device includes a superdirective speaker having a first surface, and an attachment part having a second surface opposed to the first surface. The first surface has a convex face, and the second surface has a concave face which can come into contact with the convex face. A curvature of the convex face is set larger than that of the concave face. A direction of emitting a sound wave of the superdirective speaker can be adjusted by making the convex face move along the concave face.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: October 14, 2014
    Assignee: Panasonic Patent Center
    Inventors: Katsu Takeda, Fumiyasu Konno, Rihito Shoji, Susumu Fukushima
  • Patent number: 8855333
    Abstract: An ultrasonic speaker system has a first variable gain block, a modulation block, a second variable gain block, an ultrasonic actuator, and a controller, wherein the controller controls gain of the first variable gain block so that a modulation degree of a modulated signal becomes a predetermined value, and when the controller raises the gain of the first variable gain block, the controller lowers the gain of the second variable gain block, while when the controller lowers the gain of the first variable gain block, the controller raises the gain of the second variable gain block.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: October 7, 2014
    Assignee: Panasonic Corporation
    Inventors: Kazuhisa Kotegawa, Fumiyasu Konno, Katsu Takeda
  • Publication number: 20140254811
    Abstract: Provided is a sound reproduction device including: a first loudspeaker having directionality utilizing a parametric effect; a second loudspeaker having directionality broader than that of the first loudspeaker; an orientation adjustment unit configured to change an orientation of the first loudspeaker; an information obtaining device configured to obtain positional information of a listener; and a drive controller electrically connected to the first loudspeaker, the second loudspeaker, the orientation adjustment unit, and the information obtaining device, and configured to control the orientation of the first loudspeaker based on the positional information of the listener.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Katsu TAKEDA, Fumiyasu KONNO, Kazuhisa KOTEGAWA
  • Publication number: 20140241552
    Abstract: Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener.
    Type: Application
    Filed: April 21, 2014
    Publication date: August 28, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Katsu TAKEDA, Fumiyasu KONNO, Susumu FUKUSHIMA, Rihito SHOJI
  • Publication number: 20140233760
    Abstract: An ultrasonic speaker system has a first variable gain block, a modulation block, a second variable gain block, an ultrasonic actuator, and a controller, wherein the controller controls gain of the first variable gain block so that a modulation degree of a modulated signal becomes a predetermined value, and when the controller raises the gain of the first variable gain block, the controller lowers the gain of the second variable gain block, while when the controller lowers the gain of the first variable gain block, the controller raises the gain of the second variable gain block.
    Type: Application
    Filed: January 6, 2014
    Publication date: August 21, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Kazuhisa KOTEGAWA, Fumiyasu KONNO, Katsu TAKEDA
  • Publication number: 20140161278
    Abstract: A sound reproduction device includes a modulator having an output terminal for outputting a modulated carrier wave signal obtained by modulating a carrier wave signal in a ultrasonic band with an audible sound signal, a super-directivity loudspeaker connected to the output terminal, a capacitor connected between a ultrasonic wave source and a ground, first and second current detectors for detecting currents flowing through the super-directivity loudspeaker and the capacitor, a high-pass filter for outputting a filtered signal obtained by eliminating a low-frequency band component of the current detected by the first current detector, and a differential amplifier unit for outputting a signal corresponding to a difference between the filtered signal and the current detected by the second current detector. The ultrasonic wave source is configured to output the carrier wave signal such that the signal output from the differential amplifier unit is constant.
    Type: Application
    Filed: August 28, 2012
    Publication date: June 12, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Fumiyasu Konno, Katsu Takeda
  • Patent number: 8750543
    Abstract: Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: June 10, 2014
    Assignee: Panasonic Corporation
    Inventors: Katsu Takeda, Fumiyasu Konno, Susumu Fukushima, Rihito Shoji
  • Publication number: 20140153750
    Abstract: In a directional loudspeaker, an audible sound signal that is modulated with a carrier wave in the ultrasonic wave band is input to a piezoelectric element, and thereby a diaphragm having the piezoelectric element is vibrated and a sound wave is generated. In such a directional loudspeaker, the diaphragm is fixed to a fixed part via a plurality of beams disposed along the outer circumference of the diaphragm.
    Type: Application
    Filed: August 28, 2012
    Publication date: June 5, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Fumiyasu Konno, Katsu Takeda
  • Patent number: 8666106
    Abstract: A sound reproducing device includes parametric speakers disposed to a display, a loudspeaker, drivers, a human-body sensor, and a controller. The loudspeaker has a wider directivity than the parametric speakers. The drivers change directions of the parametric speakers, respectively. The parametric speakers and the drivers constitute at least two parametric speaker units each composed of respective one of the parametric speakers and respective one of the drivers. The controller reproduces sound information based the number of persons in front of the display detected from an output from the human-body senor. The sound reproducing device reduces the possibility for a number of persons to hear the sound noisily, and allows drawing more attention to the content, e.g. an advertisement.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 4, 2014
    Assignee: Panasonic Corporation
    Inventors: Fumiyasu Konno, Katsu Takeda
  • Publication number: 20130182883
    Abstract: A sound reproduction device includes a superdirective speaker having a first surface, and an attachment part having a second surface opposed to the first surface. The first surface has a convex face, and the second surface has a concave face which can come into contact with the convex face. A curvature of the convex face is set larger than that of the concave face. A direction of emitting a sound wave of the superdirective speaker can be adjusted by making the convex face move along the concave face.
    Type: Application
    Filed: August 23, 2011
    Publication date: July 18, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Katsu Takeda, Fumiyasu Konno, Rihito Shoji, Susumu Fukushima
  • Publication number: 20130163795
    Abstract: Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener.
    Type: Application
    Filed: July 12, 2011
    Publication date: June 27, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Katsu Takeda, Fumiyasu Konno, Susumu Fukushima, Rihito Shoji
  • Publication number: 20130077803
    Abstract: A sound reproducing device includes parametric speakers disposed to a display, a loudspeaker, drivers, a human-body sensor, and a controller. The loudspeaker has a wider directivity than the parametric speakers. The drivers change directions of the parametric speakers, respectively. The parametric speakers and the drivers constitute at least two parametric speaker units each composed of respective one of the parametric speakers and respective one of the drivers. The controller reproduces sound information based the number of persons in front of the display detected from an output from the human-body senor. The sound reproducing device reduces the possibility for a number of persons to hear the sound noisily, and allows drawing more attention to the content, e.g. an advertisement.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 28, 2013
    Inventors: Fumiyasu KONNO, Katsu Takeda
  • Patent number: D827841
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: September 4, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naoki Tanaka, Masahiko Hashimoto, Takuya Iwamoto, Katsu Takeda, Takuji Watanabe, Kenji Sano