Patents by Inventor Takashi Ohyaba
Takashi Ohyaba 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: 7362874Abstract: A surround speaker system according to the present invention includes an integral speaker in which a surround speaker is integrally formed with a front speaker, a canceling device for canceling a directly propagating sound of the surround speaker, and a reflective device for reflecting the output sound of the surround speaker.Type: GrantFiled: December 21, 2003Date of Patent: April 22, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Jin Sub Lee, Takashi Ohyaba, Masao Gibo, Hyeon Goo Yoon
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Patent number: 7120271Abstract: An internal magnetic circuit is formed by a plate forming a pole piece, a vertically magnetized magnet attached to a bottom face of the plate, and a yoke attached to a bottom face of the magnet. A magnetic gap is formed between the plate and the yoke. The yoke includes a bottom part attached to the bottom face of the magnet, a side part standing on the side of the plate, and a folded-back part folding downwards over the side part to face the magnetic gap. Thus, the internal magnetic circuit having a uniform magnetic flux density inside the magnetic gap along the direction of its length is provided.Type: GrantFiled: June 13, 2003Date of Patent: October 10, 2006Assignees: Pioneer Corporation, Tohoku Pioneer CorporationInventors: Hiroyuki Kobayashi, Hiroyuki Dohi, Shouichiro Terauchi, Takashi Ohyaba
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Patent number: 6792122Abstract: An audio device has an electroacoustic transducer mounted on a clamp for converting an electric signal into an acoustic signal, an electromechanical vibration transducer for converting the electric signal into a mechanical vibration, and an abutting member having the electromechanical vibration transducer therein and mounted on the clamp so that the electromechanical vibration transducer is contacted with a cervix of a user when the audio device is worn on the head of the user.Type: GrantFiled: December 9, 1999Date of Patent: September 14, 2004Assignee: Pioneer CorporationInventors: Haruo Okada, Shunichi Takahashi, Takashi Ohyaba, Tohru Nagatani, Katsutoki Hanayama
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Publication number: 20040136553Abstract: A surround speaker system according to the present invention includes an integral speaker in which a surround speaker is integrally formed with a front speaker, a canceling device for canceling a directly propagating sound of the surround speaker, and a reflective device for reflecting the output sound of the surround speaker.Type: ApplicationFiled: December 21, 2003Publication date: July 15, 2004Applicant: Bluetek Co., Ltd.Inventors: Jin Sub Lee, Takashi Ohyaba, Masao Gibo, Hyeon Goo Yoon
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Publication number: 20040005075Abstract: An internal magnetic circuit is formed by a plate forming a pole piece, a vertically magnetized magnet attached to a bottom face of the plate, and a yoke attached to a bottom face of the magnet. A magnetic gap is formed between the plate and the yoke. The yoke includes a bottom part attached to the bottom face of the magnet, a side part standing on the side of the plate, and a folded-back part folding downwards over the side part to face the magnetic gap. Thus, the internal magnetic circuit having a uniform magnetic flux density inside the magnetic gap along the direction of its length is provided.Type: ApplicationFiled: June 13, 2003Publication date: January 8, 2004Applicants: Pioneer Corporation, Tohoku Pioneer CorporationInventors: Hiroyuki Kobayashi, Hiroyuki Dohi, Shouichiro Terauchi, Takashi Ohyaba
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Publication number: 20030210798Abstract: There is provided a speaker control apparatus capable of efficiently improving frequency characteristic of a speaker apparatus of phase inversion type, which is originally small in size and high in efficiency. The speaker control apparatus includes a detection section for detecting sound pressure within a speaker apparatus of phase inversion type and generating a sound pressure signal Spo corresponding to the detected sound pressure, a signal processing section for generating a feedback signal Sfb for feedback on the basis of the detected sound pressure signal Spo, a feedback section for feeding back the feedback signal Sfb to an input signal corresponding to sound to be radiated and generating a feedback input signal Ssy, and an amplification section for driving a speaker unit included in the speaker apparatus on the basis of the feedback input signal Ssy and causing radiation of sound.Type: ApplicationFiled: March 7, 2003Publication date: November 13, 2003Inventor: Takashi Ohyaba
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Patent number: 6144753Abstract: A speaker apparatus has a damper for supporting vibrating elements including a vibrating diaphragm. The damper is formed by injecting a predetermined amount of a resin material into a metal mold of an injection molding equipment.Type: GrantFiled: May 19, 1997Date of Patent: November 7, 2000Assignee: Pioneer Electronic CorporationInventors: Takashi Ohyaba, Shunichi Takahashi, Showichiro Terauchi, Takanobu Saito, Tatsuya Ando, Yoshiya Usami, Hiroyuki Kataoka
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Patent number: 5848173Abstract: A cylindrical frame is mounted in a cabinet and a magnetic circuit is provided at an end of the frame. A diaphragm having a peripheral free edge is connected to a coil bobbin and a cylindrical ring is secured to the free end edge and disposed in a cylindrical supporting portion of the frame. An annular sealing member is secured to the cylindrical ring so that an outside peripheral wall thereof is slidably contacted with an inside wall of the cylindrical supporting portion of the frame.Type: GrantFiled: March 28, 1996Date of Patent: December 8, 1998Assignee: Pioneer Electronic CorporationInventors: Yoko Sato, Satoshi Kumada, Ziging Zhang, Junko Oba, Shinji Koyano, Takashi Morishige, Kohshiro Kogure, Yuichi Mohri, Tomohiro Suenaga, Shouichiro Terauchi, Tatsuya Ando, Takanobu Saito, Takashi Ohyaba, Shunichi Takahashi, Teruo Baba
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Patent number: 5590208Abstract: A duct is provided in a cabinet for radiating sound pressure emitted from a speaker unit. The duct comprises a first duct and a second duct. The first duct extends in a direction perpendicular to a radiating direction of the sound pressure radiated from a front side of the speaker unit. The second duct is connected to an end of the first duct. An inner end of of the second duct is communicated with the cabinet. The speaker unit is disposed at a connection of the first and second ducts.Type: GrantFiled: April 11, 1995Date of Patent: December 31, 1996Assignee: Pioneer Electronic CorporationInventors: Shinji Koyano, Koushirou Kogure, Takashi Ohyaba, Makoto Sakakibara, Katsutoki Hanayama
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Patent number: 4504704Abstract: A dynamic loudspeaker unit having a voice coil formed with two windings in which a capacitor is connected in series to a parallel circuit, one circuit arm being composed of a series circuit of one of the two windings and an inductor and the other circuit arm being composed of the remaining winding. The dynamic loudspeaker unit thus constructed is housed in a bass-reflex type cabinet, whereby a shoulder characteristic having a large Q in a bass zone can be obtained, and due to a combination of the inductor and the capacitor, a desired lowest resonance frequency lower than an actual lowest resonance frequency can be selected. Thus, the reproducible bass range can be extended.Type: GrantFiled: August 30, 1983Date of Patent: March 12, 1985Assignee: Pioneer Electronic CorporationInventors: Takashi Ohyaba, Minoru Kamishima, Shozo Kinoshita, Tetsuo Kawamura, Hiroaki Matsuhisa
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Patent number: 4413160Abstract: The ribbon-type loudspeaker that has the characteristics of large cooling effect such that electrical input power is increased. The ribbon-type loudspeaker comprises magnet means having plates positioned in facing relation to each other to form a gap therebetween; an electrically conductive diaphragm extended between said plates to complete a magnetic circuit, said diaphragm forming an electric circuit transversely of said magnetic circuit, at least one side of said diaphragm being formed with an electrically insulating layer; and a heat absorbing plate extended between said plates and attached in contacting relation thereto over an extended area, said heat absorbing plate being formed with an electrically insulating layer in facing relation to the electrically insulating layer of the diaphragm.Type: GrantFiled: March 5, 1982Date of Patent: November 1, 1983Assignee: Pioneer Electronic CorporationInventors: Takashi Ohyaba, Yoichi Suzuki