Patents by Inventor Kunito Takahashi
Kunito Takahashi 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: 11395067Abstract: A microphone-loudspeaker integrated apparatus includes a plurality of microphones, a loudspeaker, and a synthesis unit. The loudspeaker is disposed between the plurality of microphones. The synthesis unit synthesizes sounds collected from the plurality of microphones. A distance between the plurality of microphones is set so as to fall within a range within which sound at a frequency needed for recognizing voice is collectable and within a range within which a noise amount due to vibration of the loudspeaker is allowable, when voice recognition is performed based on sound obtained through synthesis by the synthesis unit.Type: GrantFiled: March 18, 2019Date of Patent: July 19, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, YAMAHA CORPORATIONInventors: Keizoh Kawaguchi, Ichiro Shigetomi, Kunito Takahashi
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Patent number: 11375304Abstract: A sound output device includes: a speaker unit that has a sound emitting portion; an attaching member by which the speaker unit is attached to an object; a separating member that is provided between the speaker unit and the attaching member to separate the speaker unit from the attaching member; and a sealing member that is provided between the speaker unit and the attaching member to reduce a sound that is emitted from a side of the speaker unit opposite to the sound emitting portion and is transmitted to a sound emitting portion side. The attaching member has a first portion on a side of the sound emitting portion of the speaker unit, and the first portion of the attaching member has an opening that corresponds to the sound emitting portion.Type: GrantFiled: February 10, 2021Date of Patent: June 28, 2022Assignee: YAMAHA CORPORATIONInventors: Kunito Takahashi, Akiyoshi Sato, Tsuyoshi Okami
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Publication number: 20210168478Abstract: A sound output device includes: a speaker unit that has a sound emitting portion; an attaching member by which the speaker unit is attached to an object; a separating member that is provided between the speaker unit and the attaching member to separate the speaker unit from the attaching member; and a sealing member that is provided between the speaker unit and the attaching member to reduce a sound that is emitted from a side of the speaker unit opposite to the sound emitting portion and is transmitted to a sound emitting portion side. The attaching member has a first portion on a side of the sound emitting portion of the speaker unit, and the first portion of the attaching member has an opening that corresponds to the sound emitting portion.Type: ApplicationFiled: February 10, 2021Publication date: June 3, 2021Inventors: Kunito TAKAHASHI, Akiyoshi SATO, Tsuyoshi OKAMI
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Patent number: 10958998Abstract: A sound output device includes: a speaker unit that has a sound emitting portion; an attaching member by which the speaker unit is attached to an object; a separating member that is provided between the speaker unit and the attaching member to separate the speaker unit from the attaching member; and a sealing member that is provided between the speaker unit and the attaching member to reduce a sound that is emitted from a side of the speaker unit opposite to the sound emitting portion and is transmitted to a sound emitting portion side. The attaching member has a first portion on a side of the sound emitting portion of the speaker unit, and the first portion of the attaching member has an opening that corresponds to the sound emitting portion.Type: GrantFiled: August 7, 2020Date of Patent: March 23, 2021Assignee: YAMAHA CORPORATIONInventors: Kunito Takahashi, Akiyoshi Sato, Tsuyoshi Okami
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Publication number: 20210014623Abstract: A speech communication module that is to be attached in a cabin of a vehicle includes: a microphone; a loudspeaker; and a controller. The controller includes a memory storing a table that information indicating a corresponding relation between an acoustic environment parameter of an interior of the cabin of the vehicle and a vehicle type of the vehicle is stored in individually for each vehicle type. The controller is configured to acquire information indicating the vehicle type of the vehicle that the speech communication module is to be attached to from the vehicle, to read an acoustic environment parameter corresponding to the acquired vehicle type from the table, and to automatically adjust an acoustic parameter of the microphone and the loudspeaker in accordance with the read acoustic environment parameter.Type: ApplicationFiled: March 11, 2019Publication date: January 14, 2021Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, YAMAHA CORPORATIONInventors: Keizoh KAWAGUCHI, Ichiro SHIGETOMI, Kunito TAKAHASHI
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Publication number: 20210006904Abstract: A microphone-loudspeaker integrated apparatus includes a plurality of microphones, a loudspeaker, and a synthesis unit. The loudspeaker is disposed between the plurality of microphones. The synthesis unit synthesizes sounds collected from the plurality of microphones. A distance between the plurality of microphones is set so as to fall within a range within which sound at a frequency needed for recognizing voice is collectable and within a range within which a noise amount due to vibration of the loudspeaker is allowable, when voice recognition is performed based on sound obtained through synthesis by the synthesis unit.Type: ApplicationFiled: March 18, 2019Publication date: January 7, 2021Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION, YAMAHA CORPORATIONInventors: Keizoh KAWAGUCHI, Ichiro SHIGETOMI, Kunito TAKAHASHI
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Publication number: 20200366980Abstract: A sound output device includes: a speaker unit that has a sound emitting portion; an attaching member by which the speaker unit is attached to an object; a separating member that is provided between the speaker unit and the attaching member to separate the speaker unit from the attaching member; and a sealing member that is provided between the speaker unit and the attaching member to reduce a sound that is emitted from a side of the speaker unit opposite to the sound emitting portion and is transmitted to a sound emitting portion side. The attaching member has a first portion on a side of the sound emitting portion of the speaker unit, and the first portion of the attaching member has an opening that corresponds to the sound emitting portion.Type: ApplicationFiled: August 7, 2020Publication date: November 19, 2020Inventors: Kunito TAKAHASHI, Akiyoshi SATO, Tsuyoshi OKAMI
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Patent number: 10820076Abstract: A sound output device includes: a speaker unit that has a sound emitting portion; an attaching member by which the speaker unit is attached to an object; a separating member that is provided between the speaker unit and the attaching member to separate the speaker unit from the attaching member; and a sealing member that is provided between the speaker unit and the attaching member to reduce a sound that is emitted from a side of the speaker unit opposite to the sound emitting portion and is transmitted to a sound emitting portion side. The attaching member has a first portion on a side of the sound emitting portion of the speaker unit, and the first portion of the attaching member has an opening that corresponds to the sound emitting portion.Type: GrantFiled: January 4, 2018Date of Patent: October 27, 2020Assignee: YAMAHA CORPORATIONInventors: Kunito Takahashi, Akiyoshi Sato, Tsuyoshi Okami
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Publication number: 20180139523Abstract: A sound output device includes: a speaker unit that has a sound emitting portion; an attaching member by which the speaker unit is attached to an object; a separating member that is provided between the speaker unit and the attaching member to separate the speaker unit from the attaching member; and a sealing member that is provided between the speaker unit and the attaching member to reduce a sound that is emitted from a side of the speaker unit opposite to the sound emitting portion and is transmitted to a sound emitting portion side. The attaching member has a first portion on a side of the sound emitting portion of the speaker unit, and the first portion of the attaching member has an opening that corresponds to the sound emitting portion.Type: ApplicationFiled: January 4, 2018Publication date: May 17, 2018Inventors: Kunito TAKAHASHI, Akiyoshi SATO, Tsuyoshi OKAMI
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Patent number: 9535102Abstract: A test signal supplying device includes a first external terminal, a second external terminal being applied with a predetermined electric potential, an internal load, a first terminal that is connected to the first external terminal through the internal load, a second terminal that is connected to the first external terminal without passing through the internal load, a test signal generating section that generates a test signal and supplies the test signal to the second terminal, a detecting section that detects an amplitude of the test signal, and a controlling section that measures an impedance of an external load connected to the first and second external terminals based on the detected amplitude of the test signal.Type: GrantFiled: May 16, 2013Date of Patent: January 3, 2017Assignee: Yamaha CorporationInventors: Kunito Takahashi, Akihiko Toda, Tatsuya Kishii
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Publication number: 20130307561Abstract: A test signal supplying device includes a first external terminal, a second external terminal being applied with a predetermined electric potential, an internal load, a first terminal that is connected to the first external terminal through the internal load, a second terminal that is connected to the first external terminal without passing through the internal load, a test signal generating section that generates a test signal and supplies the test signal to the second terminal, a detecting section that detects an amplitude of the test signal, and a controlling section that measures an impedance of an external load connected to the first and second external terminals based on the detected amplitude of the test signal.Type: ApplicationFiled: May 16, 2013Publication date: November 21, 2013Applicant: YAMAHA CORPORATIONInventors: Kunito TAKAHASHI, Akihiko TODA, Tatsuya KISHII
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Patent number: 6826215Abstract: A laser diode driving circuit is provided, which is capable of supplying a laser diode thereof with a high-speed pulse current. A current source supplies a current to the laser diode. An NMOS transistor as a first switch is connected between the current source and the laser diode. An NMOS transistor as a second switch is connected between a junction between the current source and the first switch and a pseudo load. A controller supplies a first voltage pulse signal to the first switch and a second voltage pulse signal opposite in phase to the first voltage pulse signal to the second switch to switch the first and second switches in a complementary manner.Type: GrantFiled: February 21, 2001Date of Patent: November 30, 2004Assignee: Yamaha CorporationInventors: Nobuaki Tsuji, Kunito Takahashi
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Publication number: 20030189961Abstract: A laser diode driving circuit is provided, which is capable of supplying a laser diode thereof with a high-speed pulse current. A current source supplies a current to the laser diode. An NMOS transistor as a first switch is connected between the current source and the laser diode. An NMOS transistor as a second switch is connected between a junction between the current source and the first switch and a pseudo load. A controller supplies a first voltage pulse signal to the first switch and a second voltage pulse signal opposite in phase to the first voltage pulse signal to the second switch to switch the first and second switches in a complementary manner.Type: ApplicationFiled: February 21, 2001Publication date: October 9, 2003Inventors: Nobuaki Tsuji, Kunito Takahashi
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Patent number: 6509856Abstract: The present invention provides a high-accuracy and multi-bit D/A converter which can be produced using a CMOS process. A resistor string is formed of a plurality of resistors connected in series. A switch matrix has switch strings each formed of switches each having one end thereof connected to a corresponding one of junctions of the resistors and having respective other ends commonly connected to one of common junctions. A decoder turns on and off the switches of the switch strings according to more significant bits of data for conversion. A less significant bits-conversion circuit generates a voltage corresponding to less significant bits of the data for conversion and outputs the voltage. An operational amplifier carries out addition or subtraction of a voltage at each of the common junctions and an output from the less significant bits-conversion circuit.Type: GrantFiled: January 30, 2001Date of Patent: January 21, 2003Assignee: Yamaha CorporationInventors: Masao Noro, Kunito Takahashi, Shoji Yasui
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Publication number: 20010020910Abstract: The present invention provides a high-accuracy and multi-bit D/A converter which can be produced using a CMOS process. A resistor string is formed of a plurality of resistors connected in series. A switch matrix has switch strings each formed of switches each having one end thereof connected to a corresponding one of junctions of the resistors and having respective other ends commonly connected to one of common junctions. A decoder turns on and off the switches of the switch strings according to more significant bits of data for conversion. A less significant bits-conversion circuit generates a voltage corresponding to less significant bits of the data for conversion and outputs the voltage. An operational amplifier carries out addition or subtraction of a voltage at each of the common junctions and an output from the less significant bits-conversion circuit.Type: ApplicationFiled: January 30, 2001Publication date: September 13, 2001Inventors: Masao Noro, Kunito Takahashi, Shoji Yasui