Patents by Inventor Sadatoshi Hisamoto
Sadatoshi Hisamoto 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: 10805732Abstract: There is provided a diaphragm or a dust cap configured to emit a sound wave and an electrodynamic speaker unit including the diaphragm or the dust cap. The speaker unit is configured so that a great peak dip of sound pressure frequency characteristics due to influence of a divided vibration mode can be prevented and excellent reproduced sound quality can be provided. In the diaphragm or the dust cap, a recessed-raised portion imitating a wing of an insect is formed at least on one surface of a diaphragm portion configured to emit a sound wave. Preferably, the recessed-raised portion is formed based on data obtained by measurement of an actual shape of a wing vein of the insect or data of a Voronoi diagram imitating the wing vein of the insect.Type: GrantFiled: August 4, 2019Date of Patent: October 13, 2020Assignee: Onkyo CorporationInventors: Takeru Inoue, Hajime Yoshimura, Hiroyasu Kumo, Sadatoshi Hisamoto
-
Publication number: 20200077197Abstract: There is provided a diaphragm or a dust cap configured to emit a sound wave and an electrodynamic speaker unit including the diaphragm or the dust cap. The speaker unit is configured so that a great peak dip of sound pressure frequency characteristics due to influence of a divided vibration mode can be prevented and excellent reproduced sound quality can be provided. In the diaphragm or the dust cap, a recessed-raised portion imitating a wing of an insect is formed at least on one surface of a diaphragm portion configured to emit a sound wave. Preferably, the recessed-raised portion is formed based on data obtained by measurement of an actual shape of a wing vein of the insect or data of a Voronoi diagram imitating the wing vein of the insect.Type: ApplicationFiled: August 4, 2019Publication date: March 5, 2020Inventors: Takeru INOUE, Hajime YOSHIMURA, Hiroyasu KUMO, Sadatoshi HISAMOTO
-
Patent number: 8391512Abstract: A controlling unit includes: a memory unit that stores information in which the multiple clock frequencies that satisfy conditions for predetermined reception interferences to a part of multiple carrier frequencies included in a band frequency of the broadcast wave are previously set so that not all clock frequencies satisfy the conditions for the reception interferences to the same carrier frequencies, the information indicating a relation between each clock frequency and the carrier frequency that includes the reception interference; a reception frequency setting unit that sets the carrier frequency to be received to the broadcast wave receiving unit; a clock frequency determining unit that refers to the information stored in the memory unit and determines a clock frequency that does not include a reception interference to the carrier frequency that is set by the reception frequency setting unit, the determined clock frequency being out of the multiple clock frequencies; and a clock frequency setting unit tType: GrantFiled: May 5, 2010Date of Patent: March 5, 2013Assignee: Onkyo CorporationInventors: Atsushi Minakawa, Sadatoshi Hisamoto, Tetsuya Toyama
-
Patent number: 8036409Abstract: A speaker cabinet according to an embodiment of the present invention includes: a pair of side plates whose outer peripheral portions define no apexes; and a bent plate curved in conformity with the outer peripheral portions of the pair of side plates and mounted to the pair of side plates.Type: GrantFiled: August 29, 2006Date of Patent: October 11, 2011Assignees: Onkyo Corporation, Takamine Gakki Co., Ltd.Inventors: Sadatoshi Hisamoto, Yushi Ono, Kosuke Heki, Koichi Sadaie, Hiroyuki Mizutani
-
Publication number: 20110075721Abstract: A controlling unit includes: a memory unit that stores information in which the multiple clock frequencies that satisfy conditions for predetermined reception interferences to apart of multiple carrier frequencies included in a band frequency of the broadcast wave are previously set so that not all clock frequencies satisfy the conditions for the reception interferences to the same carrier frequencies, the information indicating a relation between each clock frequency and the carrier frequency that includes the reception interference; a reception frequency setting unit that sets the carrier frequency to be received to the broadcast wave receiving unit; a clock frequency determining unit that refers to the information stored in the memory unit and determines a clock frequency that does not include a reception interference to the carrier frequency that is set by the reception frequency setting unit, the determined clock frequency being out of the multiple clock frequencies; and a clock frequency setting unit thType: ApplicationFiled: May 5, 2010Publication date: March 31, 2011Inventors: Atsushi MINAKAWA, Sadatoshi HISAMOTO, Tetsuya TOYAMA
-
Patent number: 7567684Abstract: A speaker diaphragm 1 includes a first diaphragm portion 5, a second diaphragm portion 6 integrally molded with the first diaphragm portion 5, and a bobbin-receiving portion 7 protruding from a back side of a connecting portion between the first diaphragm portion 5 and the second diaphragm portion 6, with one end of a voice coil bobbin 2 being bonded to the bobbin-receiving portion 7. The bobbin-receiving portion 7 includes a first extension 8 extending backwards from the first diaphragm portion 5 and a second extension 9 extending backwards from the second diaphragm portion 6. A bobbin-receiving groove 10 is defined between the first extension 8 and the second extension 9. The voice coil bobbin 2 is inserted in and bonded to the bobbin-receiving groove 10.Type: GrantFiled: July 15, 2005Date of Patent: July 28, 2009Assignee: Onkyo CorporationInventors: Yushi Ono, Sadatoshi Hisamoto, Takeru Inoue
-
Publication number: 20080075311Abstract: A speaker cabinet according to an embodiment of the present invention includes: a pair of side plates whose outer peripheral portions define no apexes; and a bent plate curved in conformity with the outer peripheral portions of the pair of side plates and mounted to the pair of side plates.Type: ApplicationFiled: August 29, 2006Publication date: March 27, 2008Inventors: Sadatoshi HISAMOTO, Yushi Ono, Kosuke Heki, Koichi Sadaie, Hiroyuki Mizutani
-
Patent number: 7102405Abstract: A pulse-width modulation circuit converts an input signal into a pulse signal to be supplied to a switch amplifying circuit. The modulation circuit includes a comparison signal generator, an amplitude controller for modulating a comparison signal from the signal generator, and a comparator for comparing the modulated comparison signal and the input signal. The comparator outputs a signal whose level is inverted in accordance with the level of the input signal. The signal outputted from the comparator is supplied to the switch amplifying circuit.Type: GrantFiled: August 3, 2004Date of Patent: September 5, 2006Assignee: Onkyo CorporationInventors: Sadatoshi Hisamoto, Koji Takatori
-
Publication number: 20060062422Abstract: A speaker diaphragm 1 includes a first diaphragm portion 5, a second diaphragm portion 6 integrally molded with the first diaphragm portion 5, and a bobbin-receiving portion 7 protruding from a back side of a connecting portion between the first diaphragm portion 5 and the second diaphragm portion 6, with one end of a voice coil bobbin 2 being bonded to the bobbin-receiving portion 7. The bobbin-receiving portion 7 includes a first extension 8 extending backwards from the first diaphragm portion 5 and a second extension 9 extending backwards from the second diaphragm portion 6. A bobbin-receiving groove 10 is defined between the first extension 8 and the second extension 9. The voice coil bobbin 2 is inserted in and bonded to the bobbin-receiving groove 10.Type: ApplicationFiled: July 15, 2005Publication date: March 23, 2006Inventors: Yushi Ono, Sadatoshi Hisamoto, Takeru Inoue
-
Patent number: 6984887Abstract: A heatsink arrangement attached to a semiconductor device includes: a first heatsink placed in close contact with the semiconductor device; and second heatsink placed in close contact with the first heatsink, wherein the first heatsink and the second heatsink are connected to a power supply circuit for the semiconductor device via first connector and second connector, respectively. Thus, the present invention provides a heatsink arrangement for a semiconductor device used in an electric/electronic circuit that radiates less high-frequency noise even when a large current flows through the semiconductor device and that provides a high heat-radiating efficiency.Type: GrantFiled: December 18, 2003Date of Patent: January 10, 2006Assignee: ONKYO CorporationInventors: Norio Umezu, Sadatoshi Hisamoto, Kazutaka Murayama
-
Patent number: 6956954Abstract: Surround-effect, providing no unnatural feeling to the listeners who sit next to each other under side-by-side basis through virtual sound sources, is realized. A surround left channel signal SL and a surround right channel signal SR are mixed with an adder 10 and are in monaural. A first monophonic signal and a second monophonic signal thus resulted are supplied to a virtual localization processor 12. A first virtual localization output of the processor 12 is supplied to a front left speaker SPL and a front right speaker SPR and a second virtual localization output thereof is supplied to a front center speaker SPC. In this way, virtual sound sources can be created at the right and the left to the listener 2. Similarly, virtual sound sources can also be created at the right and the left to the listener 3. Sound fields from the virtual surround sources are in reverse to the listener 2 and the listener 3.Type: GrantFiled: October 15, 1999Date of Patent: October 18, 2005Assignee: Onkyo CorporationInventors: Kazumasa Takemura, Joji Kasai, Tetsuro Nakatake, Sadatoshi Hisamoto
-
Publication number: 20050029994Abstract: A pulse-width modulation circuit converts an input signal into a pulse signal to be supplied to a switch amplifying circuit. The modulation circuit includes a comparison signal generator, an amplitude controller for modulating a comparison signal from the signal generator, and a comparator for comparing the modulated comparison signal and the input signal. The comparator outputs a signal whose level is inverted in accordance with the level of the input signal. The signal outputted from the comparator is supplied to the switch amplifying circuit.Type: ApplicationFiled: August 3, 2004Publication date: February 10, 2005Applicant: ONKYO CORPORATIONInventors: Sadatoshi Hisamoto, Koji Takatori
-
Publication number: 20040164405Abstract: A heatsink arrangement attached to a semiconductor device includes: a first heatsink placed in close contact with the semiconductor device; and second heatsink placed in close contact with the first heatsink, wherein the first heatsink and the second heatsink are connected to a power supply circuit for the semiconductor device via first connector and second connector, respectively. Thus, the present invention provides a heatsink arrangement for a semiconductor device used in an electric/electronic circuit that radiates less high-frequency noise even when a large current flows through the semiconductor device and that provides a high heat-radiating efficiency.Type: ApplicationFiled: December 18, 2003Publication date: August 26, 2004Inventors: Norio Umezu, Sadatoshi Hisamoto, Kazutaka Murayama
-
Patent number: 6765449Abstract: A pulse width modulation circuit of the present invention includes: pulse generation means being provided with a first power supply and charged with a first current and a second current between which a constant current is distributed to turn ON/OFF a switching element, thereby generating a pulse from a first output section; pulse modulation means for controlling the charging while controlling a distribution ratio between the first current and the second current based on an input signal, thereby changing a pulse width of the output pulse; and first short circuit means for shorting the first output section with the first power supply when the pulse being output from the first output section transitions to a voltage of the first power supply.Type: GrantFiled: February 19, 2003Date of Patent: July 20, 2004Assignee: Onkyo CorporationInventors: Kazutaka Murayama, Sadatoshi Hisamoto, Norio Umezu, Yoshitaka Handa, Shuichi Hiza
-
Publication number: 20030160661Abstract: A pulse width modulation circuit of the present invention includes: pulse generation means being provided with a first power supply and charged with a first current and a second current between which a constant current is distributed to turn ON/OFF a switching element, thereby generating a pulse from a first output section; pulse modulation means for controlling the charging while controlling a distribution ratio between the first current and the second current based on an input signal, thereby changing a pulse width of the output pulse; and first short circuit means for shorting the first output section with the first power supply when the pulse being output from the first output section transitions to a voltage of the first power supply.Type: ApplicationFiled: February 19, 2003Publication date: August 28, 2003Inventors: Kazutaka Murayama, Sadatoshi Hisamoto, Norio Umezu, Yoshitaka Handa, Shuichi Hiza