Patents by Inventor Kazuhito Tsuchida
Kazuhito Tsuchida 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: 9717124Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: GrantFiled: August 19, 2015Date of Patent: July 25, 2017Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20150359058Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: ApplicationFiled: August 19, 2015Publication date: December 10, 2015Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Patent number: 9148927Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: GrantFiled: July 31, 2014Date of Patent: September 29, 2015Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Patent number: 9041643Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: GrantFiled: April 21, 2014Date of Patent: May 26, 2015Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20150127186Abstract: A power supply device including: (a) a power supply unit group composed of a plurality of power supply units and connected with a power consuming appliance; and (b) a control device configured to control the power supply unit group, wherein the control device and each of the power supply units are connected to each other by a communicating circuit.Type: ApplicationFiled: January 8, 2015Publication date: May 7, 2015Inventors: Shiho Moriai, Tsuyoshi Masato, Shinichi Uesaka, Atsushi Ozawa, Masanobu Katagi, Tomoyuki Ono, Kazuhito Tsuchida, Shin Hotta, Kazuo Nakamura, Kentaro Marutani
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Patent number: 9014866Abstract: A power supply device including: (a) a power supply unit group composed of a plurality of power supply units and connected with a power consuming appliance; and (b) a control device configured to control the power supply unit group, wherein the control device and each of the power supply units are connected to each other by a communicating circuit.Type: GrantFiled: September 12, 2011Date of Patent: April 21, 2015Assignee: Sony CorporationInventors: Shiho Moriai, Tsuyoshi Masato, Shinichi Uesaka, Atsushi Ozawa, Masanobu Katagi, Tomoyuki Ono, Kazuhito Tsuchida, Shin Hotta, Kazuo Nakamura, Kentaro Marutani
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Patent number: 8941581Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: GrantFiled: November 21, 2013Date of Patent: January 27, 2015Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20140339997Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: ApplicationFiled: July 31, 2014Publication date: November 20, 2014Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20140225522Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: ApplicationFiled: April 21, 2014Publication date: August 14, 2014Applicants: SONY MOBILE COMMUNICATIONS INC., SONY CORPORATIONInventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20140078030Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: ApplicationFiled: November 21, 2013Publication date: March 20, 2014Applicants: SONY MOBILE COMMUNICATIONS INC., SONY CORPORATIONInventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Patent number: 8654059Abstract: A light emitting element drive apparatus capable of always outputting the lowest voltage satisfying the drive conditions and having a high light emitting efficiency and a low power loss, and a portable apparatus using the same, comprising an LED drive apparatus 10 to which LEDs 20-1 to 20-n of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits 13-1 to 13-n connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits 14 and 15 for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to a plurality of LEDs in parallel.Type: GrantFiled: March 26, 2008Date of Patent: February 18, 2014Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Patent number: 8618745Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: GrantFiled: August 28, 2012Date of Patent: December 31, 2013Assignees: Sony Corporation, Sony Mobile Communications Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20130033196Abstract: A light emitting element drive apparatus capable of outputting the lowest voltage satisfying drive conditions and having high light emitting efficiency and low power loss, and a portable apparatus using the same, comprising an LED drive apparatus to which LEDs of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to LEDs in parallel.Type: ApplicationFiled: August 28, 2012Publication date: February 7, 2013Applicants: Sony Mobile Communications Japan, Inc., Sony CorporationInventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20120072042Abstract: A power supply device including: (a) a power supply unit group composed of a plurality of power supply units and connected with a power consuming appliance; and (b) a control device configured to control the power supply unit group, wherein the control device and each of the power supply units are connected to each other by a communicating circuit.Type: ApplicationFiled: September 12, 2011Publication date: March 22, 2012Applicant: SONY CORPORATIONInventors: Shiho Moriai, Tsuyoshi Masato, Shinichi Uesaka, Atsushi Ozawa, Masanobu Katagi, Tomoyuki Ono, Kazuhito Tsuchida, Shin Hotta, Kazuo Nakamura, Kentaro Marutani
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Publication number: 20080204381Abstract: A light emitting element drive apparatus capable of always outputting the lowest voltage satisfying the drive conditions and having a high light emitting efficiency and a low power loss, and a portable apparatus using the same, comprising an LED drive apparatus 10 to which LEDs 20-1 to 20-n of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits 13-1 to 13-n connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits 14 and 15 for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to a plurality of LEDs in parallel.Type: ApplicationFiled: March 26, 2008Publication date: August 28, 2008Applicants: Sony Corporation, Sony Ericsson Mobile Communications Japan, Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Patent number: 7365718Abstract: A light emitting element drive apparatus capable of always outputting the lowest voltage satisfying the drive conditions and having a high light emitting efficiency and a low power loss, and a portable apparatus using the same, comprising a LED drive apparatus 10 to which LEDs 20-1 to 20-n of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits 13-1 to 13-n connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits 14 and 15 for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to a plurality of LEDs in parallel.Type: GrantFiled: May 29, 2003Date of Patent: April 29, 2008Assignees: Sony Corporation, Sony Ericsson Mobile Communication Japan, Inc.Inventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Patent number: 7102396Abstract: A hysteresis detection method has two reference voltages Vref1, Vref2 relative to an input voltage Vin. It is determined whether the input voltage Vin becomes higher than or lower than the reference voltages Vref1, Vref2, and a judged result is outputted. In the initial stage in which the detection is started, regardless of the magnitude of the input voltage Vin, the reference voltage is fixed to any one of the reference voltages Vref1, Vref2. There are provided a hysteresis detecting method and a hysteresis detecting circuit in which, in the hysteresis detection having two reference voltages and which determines whether the input voltage is higher than or lower than the two reference voltages, one of the reference voltages can be judged and the judged result can be outputted regardless of the magnitude of the input voltage in the initial state in which the reference voltage is stabilized from the time in which the circuit is actuated.Type: GrantFiled: September 14, 2004Date of Patent: September 5, 2006Assignee: Sony CorporationInventors: Kazuhito Tsuchida, Kimitaka Benise
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Publication number: 20050225515Abstract: A light emitting element drive apparatus capable of always outputting the lowest voltage satisfying the drive conditions and having a high light emitting efficiency and a low power loss, and a portable apparatus using the same, comprising an LED drive apparatus 10 to which LEDs 20-1 to 20-n of different drive voltages required for emitting light are connected in parallel and driving one or more LEDs, wherein the LED drive apparatus 10 has drive circuits 13-1 to 13-n connected to the corresponding LEDs among a plurality of LEDs and driving the corresponding LEDs with luminances based on set values and power supply circuits 14 and 15 for deciding a drive voltage value required for the highest light emission among one or more LEDs driven to emit light based on drive states of drive circuits (for example terminal voltages of the current source) and supplying a drive voltage having at least the decided value to a plurality of LEDs in parallel.Type: ApplicationFiled: May 29, 2003Publication date: October 13, 2005Applicant: SONY CORPORATIONInventors: Kazuhito Tsuchida, Junji Saito, Kazuo Sudo
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Publication number: 20050057282Abstract: A hysteresis detection method has two reference voltages Vref1, Vref2 relative to an input voltage Vin. It is determined whether the input voltage Vin becomes higher than or lower than the reference voltages Vref1, Vref2 and a judged result is outputted. In the initial stage in which the detection is started, regardless of the magnitude of the input voltage Vin, the reference voltage is fixed to any one of the reference voltages Vref1, Vref2. There are provided a hysteresis detecting method and a hysteresis detecting circuit in which, in the hysteresis detection having two reference voltages and which determines whether the input voltage is higher than or lower than the two reference voltages, one of the reference voltages can be judged and the judged result can be outputted regardless of the magnitude of the input voltage in the initial state in which the reference voltage is stabilized from the time in which the circuit is actuated.Type: ApplicationFiled: September 14, 2004Publication date: March 17, 2005Applicant: Sony CorporationInventors: Kazuhito Tsuchida, Kimitaka Benise
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Patent number: 6232823Abstract: Each of a first series element, a second series element, a third series element, and a fourth series element includes a trimming fuse having a small resistance and a resistor serially connected to each other. A first reference voltage is applied to a first end of the first series element, a first end of the second series element is connected to a second end of the first series element, a second end of the second series element is grounded, a first end of the third series element is connected to the first end of the first series element, a first end of the fourth series element is connected to a second end of the third series element, a second end of the fourth series element is connected to the second end of the second series element, a first independent resistor connects the first end of the first series element and the second end of the third series element, and a voltage at the second end of the third series element is output.Type: GrantFiled: February 9, 2000Date of Patent: May 15, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Kazuhito Tsuchida