Patents by Inventor Hitoshi Ishikawa
Hitoshi Ishikawa 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: 7952446Abstract: A microcomputer includes: a CPU executing a predetermined calculation process; and a PWM timer generating a PWM pulse. The PWM timer includes a RAM for storing a duty value of the PWM pulse and a PWM controller for generating the PWM pulse. The PWM controller includes a PWM counter for counting up from a predetermined value as an initial value. The PWM pulse has an unit waveform, which is generated based on comparison between the duty value of the RAM and an output value of the PWM counter. The RAM outputs a new duty value at every comparison without functioning the CPU so that the duty value of the PWM pulse is changed in chronological order.Type: GrantFiled: May 21, 2009Date of Patent: May 31, 2011Assignee: Denso CorporationInventors: Tomoharu Hayakawa, Hiroyuki Morita, Hitoshi Ishikawa, Tatsuya Aizawa, Yu Takeuchi
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Publication number: 20110070504Abstract: This invention relates to a highly safe secondary battery. In the secondary battery of this invention, a positive electrode is formed of an oxide which adsorbs/desorbs lithium ions; a negative electrode is formed of a carbon material which adsorbs/desorbs lithium ions; and an electrolyte solution is formed of an ion liquid and a phosphoric acid ester derivative. Consequently, the secondary battery can be highly safe. Since a phosphate ester and an ion liquid are contained at the same time, high discharge capacity can be maintained even when the phosphate ester is used at a high concentration.Type: ApplicationFiled: May 14, 2009Publication date: March 24, 2011Applicants: NEC CORPORATION, NEC ENERGY DEVICES, LTD.Inventors: Kazuaki Matsumoto, Kentaro Nakahara, Shigeyuki Iwasa, Hitoshi Ishikawa, Shinako Kaneko, Koji Utsugi
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Patent number: 7830286Abstract: An AD converter includes an input circuit, an operation circuit and a bus interface. The input circuit is provided with a pull-down circuit, which is capable of pulling down an analog signal input side of a sample-hold circuit whether an analog signal is inputted or not. The operation circuit is provided with a reference voltage conversion result storing register, which is capable of storing a conversion result of an analog reference voltage inputted periodically separately from a conversion result of the analog signal inputted through the sample-hold circuit. The operation circuit is further provided with a check register, which is capable of writing in and reading out data for checking operation of a signal transfer system including a bus interface through the bus interface. Thus, it is made possible to confirm normality of an external part and an internal part of the AD converter.Type: GrantFiled: May 18, 2009Date of Patent: November 9, 2010Assignee: Denso CorporationInventors: Hideki Kabune, Nobuhiko Makino, Tomoharu Hayakawa, Hitoshi Ishikawa, Tatsuya Aizawa, Shigeo Uno, Masamitsu Ozeki
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Publication number: 20100151608Abstract: Disclosed is a method of manufacturing a substrate for an organic EL device, the method comprising the step of: filling grooves of the optical element with sol-gel coating solution or organic metal cracking solution when a diffraction grating 12 is formed on the glass substrate 11, wherein an encapsulation member 5 is mounted to the glass substrate 11 in order to fill the groove 12a with the coating solution, and the coating solution is injected into a gap between the encapsulation member 5 and the diffraction grating 12, so that the organic EL device can be stably manufactured with low variation between optical properties according to positions of the substrate and with improved luminous efficiency.Type: ApplicationFiled: February 25, 2010Publication date: June 17, 2010Applicant: Samsung Mobile Display Co., Ltd.Inventors: Yasuharu ONISHI, Satoru Toguchi, Junichi Yamanari, Hitoshi Ishikawa, Tomohisa Gotoh, Atsushi Kamijo
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Publication number: 20100092869Abstract: To provide high energy density, good cycle properties and rate characteristics and long-term safety of a lithium ion battery containing at least an ionic liquid and a lithium salt. The above problems are solved by suppressing reduction and decomposition of the ionic liquid on an anode by using a graphite coated with an amorphous carbon or onto which an amorphous carbon is deposited as an anode active material.Type: ApplicationFiled: September 2, 2009Publication date: April 15, 2010Applicant: NEC TOKIN CORPORATIONInventors: Shinako KANEKO, Hitoshi ISHIKAWA, Yasutaka KONO, Yoko HASHIZUME, Hiroshi KOBAYASHI
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Patent number: 7696708Abstract: A ripple detecting device for detecting a ripple from an armature current outputted from a motor by overlapping a low band noise having a frequency of one/n (wherein “n” is a natural number more than 1) includes an initial ripple detecting device for detecting a cycle of the ripple in advance, a feature detecting device for detecting a feature of the ripple from the armature current outputted from the motor. The ripple detecting device further includes a ripple detecting control device for detecting the ripple by comparing the feature of the ripple with the low band noise having the frequency of one/n detected by the feature detecting device at a time before the present time with the feature of the ripple detected by the feature detecting device at the present time and judging that a ripple is generated when the features of the time before the present time and the present time present are resembled.Type: GrantFiled: May 22, 2007Date of Patent: April 13, 2010Assignee: Aisin Seiki Kabushiki KaishaInventors: Muneaki Kurimoto, Hitoshi Ishikawa, Eiichiro Shigehara
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Patent number: 7695757Abstract: Disclosed is a method of manufacturing a substrate for an organic EL device, the method comprising the step of: filling grooves of the optical element with sol-gel coating solution or organic metal cracking solution when a diffraction grating 12 is formed on the glass substrate 11, wherein an encapsulation member 5 is mounted to the glass substrate 11 in order to fill the groove 12a with the coating solution, and the coating solution is injected into a gap between the encapsulation member 5 and the diffraction grating 12, so that the organic EL device can be stably manufactured with low variation between optical properties according to positions of the substrate and with improved luminous efficiency.Type: GrantFiled: May 7, 2004Date of Patent: April 13, 2010Assignee: Samsung Mobile Display Co., Ltd.Inventors: Yasuharu Onishi, Satoru Toguchi, Junichi Yamanari, Hitoshi Ishikawa, Tomohisa Gotoh, Atsushi Kamijo
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Publication number: 20090292936Abstract: A microcomputer includes: a CPU executing a predetermined calculation process; and a PWM timer generating a PWM pulse. The PWM timer includes a RAM for storing a duty value of the PWM pulse and a PWM controller for generating the PWM pulse. The PWM controller includes a PWM counter for counting up from a predetermined value as an initial value. The PWM pulse has an unit waveform, which is generated based on comparison between the duty value of the RAM and an output value of the PWM counter. The RAM outputs a new duty value at every comparison without functioning the CPU so that the duty value of the PWM pulse is changed in chronological order.Type: ApplicationFiled: May 21, 2009Publication date: November 26, 2009Applicant: DENSO CORPORATIONInventors: Tomoharu Hayakawa, Hiroyuki Morita, Hitoshi Ishikawa, Tatsuya Aizawa, Yu Takeuchi
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Publication number: 20090289822Abstract: An AD converter includes an input circuit, an operation circuit and a bus interface. The input circuit is provided with a pull-down circuit, which is capable of pulling down an analog signal input side of a sample-hold circuit whether an analog signal is inputted or not. The operation circuit is provided with a reference voltage conversion result storing register, which is capable of storing a conversion result of an analog reference voltage inputted periodically separately from a conversion result of the analog signal inputted through the sample-hold circuit. The operation circuit is further provided with a check register, which is capable of writing in and reading out data for checking operation of a signal transfer system including a bus interface through the bus interface. Thus, it is made possible to confirm normality of an external part and an internal part of the AD converter.Type: ApplicationFiled: May 18, 2009Publication date: November 26, 2009Applicant: DENSO CORPORATIONInventors: Hideki Kabune, Nobuhiko Makino, Tomoharu Hayakawa, Hitoshi Ishikawa, Tatsuya Aizawa, Shigeo Uno, Masamitsu Ozeki
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Patent number: 7619357Abstract: The present invention relates to an organic electroluminescent device. There is provided an organic electroluminescent device with a good luminescence property and high luminous efficiency in which the organic electroluminescent device has a diffraction grating 2 on the surface of the substrate 1 and an organic EL layer 5 including an emission layer between an anode 4 an a cathode 6 via an intermediate layer 3.Type: GrantFiled: May 24, 2004Date of Patent: November 17, 2009Assignee: Samsung Mobile Display Co., Ltd.Inventors: Yasuharu Onishi, Satoru Toguchi, Junichi Yamanari, Hitoshi Ishikawa, Tomohisa Gotoh, Atsushi Kamijo
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Publication number: 20090253049Abstract: A non-aqueous electrolyte can suppress decomposition of a solvent, improve the cycle life of a secondary battery, suppress the rise of resistance of a secondary battery and improve the capacity maintenance ratio of a secondary battery A non-aqueous electrolyte secondary battery formed by using such a non-aqueous electrolyte includes a non-aqueous electrolyte containing an aprotic solvent and a disulfonic acid ester as expressed by chemical formula 1 shown below, a positive electrode and a negative electrode:Type: ApplicationFiled: April 7, 2009Publication date: October 8, 2009Applicant: NEC TOKIN CORPORATIONInventors: Hitoshi Ishikawa, Yasutaka Kono, Koji Utsugi, Yoko Hashizume, Shinako Kaneko, Hiroshi Kobayashi
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Patent number: 7598669Abstract: Provided is a light emitting diode and method for fabricating the same, and a display device using the same, wherein the light emitting diode at least comprises a high refractive index layer on a light transmissive substrate; and an organic electroluminescence (EL) element formed of one organic thin layer or a plurality of organic thin layers interposed between a transparent first electrode and a second electrode formed on the high refractive index layer, and the high refractive index layer has a refractive index higher than that of an emitting layer or has a refractive index of 1.65 or more, and an interface between the high refractive index layer and the light transmissive substrate is roughed to have its center line average roughness in a range of 0.01 ?m to 0.6 ?m so that light leakage is be prevented and light extraction efficiency becomes higher.Type: GrantFiled: March 27, 2003Date of Patent: October 6, 2009Assignee: Samsung Mobile Display Co., Ltd.Inventors: Satoru Toguchi, Hitoshi Ishikawa, Atsushi Oda
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Patent number: 7597058Abstract: An apparatus for adjusting a timing of a needle and a looptaker of a sewing machine provided at a zigzag sewing machine having an upper shaft for driving a needle bar, a lower shaft for driving a looptaker, a machine frame, and a timing belt for connecting and synchronizing the shafts includes a cam member including a first cam surface and a second cam surface, a first arm member and a second arm member supported by the machine frame and a first pulley and a second pulley mounted to the first arm member and the second arm member respectively and always contacting the timing belt, the first pulley following the first cam surface and the second pulley following the second cam surface.Type: GrantFiled: March 4, 2008Date of Patent: October 6, 2009Assignee: Aisin Seiki Kabushiki KaishaInventors: Hitoshi Ishikawa, Tatsunori Fukuda
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Publication number: 20090247300Abstract: A game device includes a player's character controller operative to control the movement of a player's character on a map, a non-player character controller operative to cause, of those non-player characters located on the map, non-player characters located within a predetermined range from the position of the player's character to join a procession following the player's character, and to move the non-player characters belonging to the procession to the position previously occupied by the player's character to allow the non-player characters to follow the player's character, and a procession controller operative to increase, upon receipt of a predetermined control input, the speed at which the non-player characters belonging to the procession to move to the position previously occupied by the player's character and to gather the non-player characters near the player's character.Type: ApplicationFiled: January 21, 2009Publication date: October 1, 2009Applicant: SONY COMPUTER ENTERTAINMENT INC.Inventors: Takahisa Suzuki, Yusuke Iida, Hitoshi Ishikawa, Hiroyuki Goto
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Publication number: 20080301681Abstract: An information processing apparatus including: a plurality of data processing functional blocks each used for carrying out individual data processing; a flow control section configured to execute control of data flows among the data processing functional blocks; and a control section configured to carry out a setting process to set the data processing functional blocks and the flow control section. The control section acquires configuration information in accordance with a task list for data processing to be carried out; carries out the setting process to set the data processing functional blocks and the flow control section on the basis of the acquired configuration information; and constructs a data processing configuration adapted to various kinds of data processing to be carried out.Type: ApplicationFiled: May 30, 2008Publication date: December 4, 2008Inventors: Junichi Sakamoto, Masaharu Yoshimori, Tanio Nagasaki, Shinsuke Koyama, Kazumasa Ito, Minoru Takahata, Mikako Hatakenaka, Jin Satoh, Hideshi Yamada, Kenichiro Yokota, Hideki Takeuchi, Hitoshi Ishikawa
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Publication number: 20080229990Abstract: An apparatus for adjusting a timing of a needle and a looptaker of a sewing machine provided at a zigzag sewing machine having an upper shaft for driving a needle bar, a lower shaft for driving a looptaker, a machine frame, and a timing belt for connecting and synchronizing the shafts includes a cam member including a first cam surface and a second cam surface, a first arm member and a second arm member supported by the machine frame and a first pulley and a second pulley mounted to the first arm member and the second arm member respectively and always contacting the timing belt, the first pulley following the first cam surface and the second pulley following the second cam surface.Type: ApplicationFiled: March 4, 2008Publication date: September 25, 2008Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Hitoshi Ishikawa, Tatsunori Fukuda
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Patent number: 7345419Abstract: The present invention uses a substrate for an optical element comprising a light scattering unit that scatters visible light, and a light transmissive opening that transmits the visible light in a light transparent substrate transmitting the visible light, as a light extraction substrate of the organic electroluminescence element. With this, a substrate for an optical element, an organic electroluminescence element, and an organic electroluminescence display device are provided that improves the light extraction efficiency to outside of the substrate and also improves the light extraction efficiency by obtaining a high luminance organic electroluminescence element.Type: GrantFiled: July 28, 2004Date of Patent: March 18, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Tomohisa Gotoh, Satoru Toguchi, Atsushi Kamijo, Yasuharu Onishi, Hitoshi Ishikawa, Junichi Yamanari
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Publication number: 20070273363Abstract: A ripple detecting device for detecting a ripple from an armature current outputted from a motor by overlapping a low band noise having a frequency of one/n (wherein “n” is a natural number more than 1) includes an initial ripple detecting device for detecting a cycle of the ripple in advance, a feature detecting device for detecting a feature of the ripple from the armature current outputted from the motor. The ripple detecting device further includes a ripple detecting control device for detecting the ripple by comparing the feature of the ripple with the low band noise having the frequency of one/n detected by the feature detecting device at a time before the present time with the feature of the ripple detected by the feature detecting device at the present time and judging that a ripple is generated when the features of the time before the present time and the present time present are resembled.Type: ApplicationFiled: May 22, 2007Publication date: November 29, 2007Applicant: AISINSEIKI KABUSHIKI KAISHAInventors: Muneaki Kurimoto, Hitoshi Ishikawa, Eiichiro Shigehara
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Patent number: 7281423Abstract: The output characteristics of the sensing device or the control quantity of the sensing element can be adjusted by extracting an adjusting terminal in addition to a power source terminal, a ground terminal, an output terminal and the like outside a housing containing and protecting an electronic circuit. Further, by arranging the adjusting terminal inside a connector housing containing terminals such as the power source terminal, the ground terminal, the output terminal and the like, it is possible to prevent contact of foreign objects to the adjusting terminal and to water-proof the terminals for preventing corrosion since an associated connector is attached to the connector when the sensing device is actually used.Type: GrantFiled: March 23, 2004Date of Patent: October 16, 2007Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.Inventors: Shinya Igarashi, Kaoru Uchiyama, Hitoshi Ishikawa
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Publication number: 20070212613Abstract: A polymer gel electrolyte, comprising a polymer gel including an aprotic organic solvent, a carrier salt and a sulfur-containing organic compound having at least one —O—SO2— in its chemical structure, for instance, a straight-chain sulfonic acid ester or a cyclic sulfonic acid ester, and a lithium polymer secondary battery using the polymer gel electrolyte and having improved rate performance and cycle performance.Type: ApplicationFiled: March 8, 2007Publication date: September 13, 2007Applicant: NEC TOKIN CORPORATIONInventors: Junichi Ishida, Yasutaka Kouno, Koji Utsugi, Hitoshi Ishikawa, Hiroshi Kobayashi, Shinako Kaneko