Patents by Inventor Takeshi Osada

Takeshi Osada 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).

  • LIGHTING FIXTURE
    Publication number: 20110261572
    Abstract: There is provided a lighting fixture 11 capable of efficiently radiating heat of a lamp device 14 attached to a socket device 13. By attaching the lamp device 14 to the socket device 13, a cap portion 38 of the lamp device 14 is brought into contact with a fixture body 12, and pressed against and brought into close contact with the fixture body 12 by an elastic body 30. Heat generated by lighting of LEDs 35 of the lamp device 14 is conducted from the cap portion 38 to the fixture body 12 and efficiently radiated.
    Type: Application
    Filed: November 16, 2009
    Publication date: October 27, 2011
    Inventors: Satoshi Watanabe, Keiichi Shimizu, Takeshi Osada, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Hirokazu Otake, Hitoshi Kawano, Makoto Sakai
  • Semiconductor device
    Patent number: 8044800
    Abstract: A semiconductor device with a built-in battery whose residual amount of the electrical energy can be detected accurately. The semiconductor device has a battery, a demodulation circuit, a control circuit which generates a signal having information about the residual amount of the electrical energy stored in the battery, and a transmission medium which displays the residual amount of the electrical energy in accordance with the signal. The demodulation circuit demodulates a signal input from an antenna which requests display of the residual amount of the electrical energy. Based on the demodulated signal, the control circuit starts to generate a signal having information about the residual amount of the electrical energy in the battery.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: October 25, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Takeshi Osada
  • Optical sensor device and electronic apparatus with an amplifier circuit and dual level shift circuit
    Patent number: 8039782
    Abstract: In an optical sensor device employing an amorphous silicon photodiode, an external amplifier IC and the like are required due to low current capacity of the sensor element in order to improve the load driving capacity. It leads to increase in cost and mounting space of the optical sensor device. In addition, noise may easily superimpose since the photodiode and the amplifier IC are connected to each other over a printed circuit board. According to the invention, an amorphous silicon photodiode and an amplifier configured by a thin film transistor are formed integrally over a substrate so that the load driving capacity is improved while reducing cost and mounting space. Superimposing noise can be also reduced.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: October 18, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Takeshi Osada, Takanori Matsuzaki, Kazuo Nishi, Junya Maruyama
  • Semiconductor device, communication system, and method of charging the semiconductor device
    Patent number: 8030885
    Abstract: An object of the present invention to provide a semiconductor device including a battery that can be wirelessly charged, in which the battery can be charged even when the semiconductor device is not put close to a power feeder. Such a semiconductor device has a structure including an antenna circuit, a communication control circuit to conduct wireless communication via the antenna circuit, a battery to be charged with electric power which is externally wirelessly fed via the antenna circuit, and an oscillator circuit to wirelessly feed electric power via the antenna circuit. In addition, the battery in the semiconductor device is wirelessly charged and the semiconductor device externally feeds electric power wirelessly to a chargeable battery in another semiconductor device.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: October 4, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takehisa Sato, Takeshi Osada
  • POWER STORAGE DEVICE AND SEMICONDUCTOR DEVICE PROVIDED WITH THE POWER STORAGE DEVICE
    Publication number: 20110215768
    Abstract: An object is to provide a power storage device provided with a battery that is a power storage means, for safe and accurate supply of electric power in a short period of time for drive power supply voltage without checking remaining capacity of the battery or changing batteries with deterioration over time of the battery for drive power supply voltage. The power storage device is provided with a battery that is a power storage means as a power supply for supplying electric power and a counter circuit for counting charging time of the power storage means. An electromagnetic wave with electric field intensity, magnetic field intensity, and power flux density per unit time which are transmitted from a power feeder are controlled, and the power storage means is efficiently charged using the electromagnetic wave in a short period of time.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 8, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Takeshi OSADA
  • WIRELESS POWER STORAGE DEVICE, SEMICONDUCTOR DEVICE INCLUDING THE WIRELESS POWER STORAGE DEVICE, AND METHOD FOR OPERATING THE SAME
    Publication number: 20110187328
    Abstract: To simplify charging of a battery in a power storage device which includes the battery. Further, to provide a wireless power storage device which can transmit and receive information without the task of replacing a battery for drive power supply, which becomes necessary when the battery depletes over time, being performed. An antenna circuit, a battery which is electrically connected to the antenna circuit via a rectifier circuit, and a load portion which is electrically connected to the battery are provided. The battery is charged when an electromagnetic wave received by the antenna circuit is input to the battery via the rectifier circuit, and discharged when electrical power which has been charged is supplied to the load portion. The battery is charged cumulatively, and the battery is discharged in pulses.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Takeshi OSADA
  • VOLTAGE CONTROLLED OSCILLATOR CIRCUIT, PHASE-LOCKED LOOP CIRCUIT USING THE VOLTAGE CONTROLLED OSCILLATOR CIRCUIT, AND SEMICONDUCTOR DEVICE PROVIDED WITH THE SAME
    Publication number: 20110163820
    Abstract: A VCO circuit includes: a control portion to which a first voltage is inputted and from which a second voltage corresponding to the first voltage is outputted; a current source portion to which the second voltage is inputted and from which a current corresponding to the second voltage is outputted; and an oscillator circuit to which the current is inputted and from which a signal with a frequency in accordance with the current is outputted. The control portion includes an adjusting circuit which changes the second voltage in conjunction with fluctuation of a power supply voltage. Accordingly, fluctuation of the frequency Fo of an output signal of the VCO circuit can be suppressed even when the power supply voltage of the VCO circuit fluctuates.
    Type: Application
    Filed: March 16, 2011
    Publication date: July 7, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Takeshi OSADA
  • CLOCK GENERATION CIRCUIT AND SEMICONDUCTOR DEVICE PROVIDED THEREWITH
    Publication number: 20110133796
    Abstract: It is an object of the present invention to solve a problem that malfunction of communication is generated by varying a frequency of a clock due to noise from outside in a case where there is no supplied signal in a circuit which performs negative feedback control so that the supplied signal and the feedback signal can maintain a fixed phase relationship between the signals. The present invention provides a configuration including a PLL circuit and an oscillator circuit, where a switch for switching an output between a signal from the PLL circuit and a signal from the oscillator circuit to the signal output portion is provided to switch from a connection to the PLL circuit to a connection to the oscillator circuit in a case where there is no received signal.
    Type: Application
    Filed: February 8, 2011
    Publication date: June 9, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Takeshi OSADA
  • Power storage device and semiconductor device provided with the power storage device
    Patent number: 7944172
    Abstract: An object is to provide a power storage device provided with a battery that is a power storage means, for safe and accurate supply of electric power in a short period of time for drive power supply voltage without checking remaining capacity of the battery or changing batteries with deterioration over time of the battery for drive power supply voltage. The power storage device is provided with a battery that is a power storage means as a power supply for supplying electric power and a counter circuit for counting charging time of the power storage means. An electromagnetic wave with electric field intensity, magnetic field intensity, and power flux density per unit time which are transmitted from a power feeder are controlled, and the power storage means is efficiently charged using the electromagnetic wave in a short period of time.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: May 17, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Takeshi Osada
  • Voltage controlled oscillator circuit, phase-locked loop circuit using the voltage controlled oscillator circuit, and semiconductor device provided with the same
    Patent number: 7936225
    Abstract: A VCO circuit includes: a control portion to which a first voltage is inputted and from which a second voltage corresponding to the first voltage is outputted; a current source portion to which the second voltage is inputted and from which a current corresponding to the second voltage is outputted; and an oscillator circuit to which the current is inputted and from which a signal with a frequency in accordance with the current is outputted. The control portion includes an adjusting circuit which changes the second voltage in conjunction with fluctuation of a power supply voltage. Accordingly, fluctuation of the frequency Fo of an output signal of the VCO circuit can be suppressed even when the power supply voltage of the VCO circuit fluctuates.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 3, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Takeshi Osada
  • Semiconductor device and manufacturing method thereof
    Patent number: 7932126
    Abstract: The area occupied by a photo-sensor element may be reduced and multiple elements may be integrated in a limited area so that the sensor element can have higher output and smaller size. Higher output and miniaturization are achieved by uniting a sensor element using an amorphous semiconductor film (typically an amorphous silicon film) and an output amplifier circuit including a TFT with a semiconductor film having a crystal structure (typically a poly-crystalline silicon film) used as an active layer over a plastic film substrate that can resist the temperature in the process for mounting such as a solder reflow process. A sensor element that can resist bending stress can be obtained.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: April 26, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Junya Maruyama, Toru Takayama, Masafumi Morisue, Ryosuke Watanabe, Eiji Sugiyama, Susumu Okazaki, Kazuo Nishi, Jun Koyama, Takeshi Osada, Takanori Matsuzaki
  • Wireless power storage device, semiconductor device including the wireless power storage device, and method for operating the same
    Patent number: 7928697
    Abstract: To simplify charging of a battery in a power storage device which includes the battery. Further, to provide a wireless power storage device which can transmit and receive information without the task of replacing a battery for drive power supply, which becomes necessary when the battery depletes over time, being performed. An antenna circuit, a battery which is electrically connected to the antenna circuit via a rectifier circuit, and a load portion which is electrically connected to the battery are provided. The battery is charged when an electromagnetic wave received by the antenna circuit is input to the battery via the rectifier circuit, and discharged when electrical power which has been charged is supplied to the load portion. The battery is charged cumulatively, and the battery is discharged in pulses.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: April 19, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Osada
  • WIRELESS POWER STORAGE DEVICE, SEMICONDUCTOR DEVICE INCLUDING THE WIRELESS POWER STORAGE DEVICE, AND METHOD FOR OPERATING THE SAME
    Publication number: 20110057610
    Abstract: To simplify charging of a battery in a power storage device which includes the battery. Further, to provide a wireless power storage device which can transmit and receive information without the task of replacing a battery for drive power supply, which becomes necessary when the battery depletes over time, being performed. An antenna circuit, a battery which is electrically connected to the antenna circuit via a rectifier circuit, and a load portion which is electrically connected to the battery are provided. The battery is charged when an electromagnetic wave received by the antenna circuit is input to the battery via the rectifier circuit, and discharged when electrical power which has been charged is supplied to the load portion. The battery is charged cumulatively, and the battery is discharged in pulses.
    Type: Application
    Filed: November 17, 2010
    Publication date: March 10, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei YAMAZAKI, Takeshi OSADA
  • SEMICONDUCTOR DEVICE, COMMUNICATION SYSTEM, AND METHOD OF CHARGING THE SEMICONDUCTOR DEVICE
    Publication number: 20110050165
    Abstract: An object of the present invention to provide a semiconductor device including a battery that can be wirelessly charged, in which the battery can be charged even when the semiconductor device is not put close to a power feeder. Such a semiconductor device has a structure including an antenna circuit, a communication control circuit to conduct wireless communication via the antenna circuit, a battery to be charged with electric power which is externally wirelessly fed via the antenna circuit, and an oscillator circuit to wirelessly feed electric power via the antenna circuit. In addition, the battery in the semiconductor device is wirelessly charged and the semiconductor device externally feeds electric power wirelessly to a chargeable battery in another semiconductor device.
    Type: Application
    Filed: November 4, 2010
    Publication date: March 3, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Takehisa SATO, Takeshi OSADA
  • Image Display Device and Testing Method of the Same
    Publication number: 20110050675
    Abstract: It is the primary object of the present invention to provide a simple and accurate testing circuit and a testing method while occupying as small space as possible in an image display device. The testing circuit including a NAND circuit connected in series is mounted on the image display device. A broken wiring on a data signal line and a defect in a data latch circuit can be detected by observing an output waveform from the testing circuit. Accordingly, a broken wiring or the like on the data signal line and a scanning line and a defect in the latch circuit can be tested simply and accurately without an expensive testing apparatus and a great deal of time while occupying as small space as possible.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 3, 2011
    Inventor: Takeshi Osada
  • Clock generation circuit and semiconductor device provided therewith
    Patent number: 7885612
    Abstract: It is an object of the present invention to solve a problem that malfunction of communication is generated by varying a frequency of a clock due to noise from outside in a case where there is no supplied signal in a circuit which performs negative feedback control so that the supplied signal and the feedback signal can maintain a fixed phase relationship between the signals. The present invention provides a configuration including a PLL circuit and an oscillator circuit, where a switch for switching an output between a signal from the PLL circuit and a signal from the oscillator circuit to the signal output portion is provided to switch from a connection to the PLL circuit to a connection to the oscillator circuit in a case where there is no received signal.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: February 8, 2011
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Takeshi Osada
  • PLL CIRCUIT AND SEMICONDUCTOR DEVICE HAVING THE SAME
    Publication number: 20110006852
    Abstract: A PLL circuit includes a phase detector, a loop filter (LF), a voltage-controlled oscillator (VCO), and a frequency divider. The phase detector compares a phase of a signal Fs which is input from outside with a phase of a signal Fo/N which is input from the frequency divider. The loop filter generates a signal Vin by removing alternating current components from a signal input from the phase detector. The voltage-controlled oscillator outputs a signal Fo based on the signal Vin input from the loop filter. The frequency divider converts the signal Fo output from the voltage-controlled oscillator into Fo/N (frequency division by N), and outputs it to the phase detector.
    Type: Application
    Filed: September 20, 2010
    Publication date: January 13, 2011
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun KOYAMA, Takeshi OSADA
  • LED lamp
    Patent number: D645589
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: September 20, 2011
    Assignees: Panasonic Electric Works Co., Ltd., Panasonic Corporation, Toshiba Lighting & Technology Corporation
    Inventors: Satoshi Fukano, Nobumichi Nishihama, Takeshi Osada, Takeshi Saito, Hiroki Nakagawa
  • Lamp socket
    Patent number: D647850
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: November 1, 2011
    Assignee: Toshiba Lighting & Technology Corporation
    Inventor: Takeshi Osada
  • Lamp socket
    Patent number: D647851
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: November 1, 2011
    Assignee: Toshiba Lighting & Technology Corporation
    Inventor: Takeshi Osada