Patents by Inventor Kiyoshi Nakagawa
Kiyoshi Nakagawa 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: 8102486Abstract: A liquid crystal panel comprises a temperature sensor (1) formed on a glass substrate (11). The temperature sensor (1) includes two junction structures (2) and (5). The junction structure (2) is formed such that two different semiconductor films (3) and (4) are joined together. The junction structure (5) is formed such that two different semiconductor films (6) and (7) are joined together. The liquid crystal panel outputs divided voltage between the voltage applied to the junction structure (2) and the voltage applied to the junction structure (5) as the voltage depending on the temperature of the liquid crystal panel. As the result, the liquid crystal panel comprising the temperature sensor (1) of simple structure and high performance is provided.Type: GrantFiled: June 6, 2007Date of Patent: January 24, 2012Assignee: Sharp Kabushiki KaishaInventors: Asahi Yamato, Kiyoshi Nakagawa, Toshihiro Yanagi
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Patent number: 7978164Abstract: A control section (6) merely passes an incoming image data signal DAT onto a source driving section for display driving during the display of a still image. During the display of a moving image, the control section (6) converts, using a computing section (61) and a look-up table (5), a grayscale level signal in the incoming image data signal DAT to a grayscale level signal that is obtainable without using those application voltages at which the response speed of liquid crystal is slow. The control section (6) then outputs the resultant grayscale level signal to the source driving section for display driving.Type: GrantFiled: March 24, 2006Date of Patent: July 12, 2011Assignee: Sharp Kabushiki KaishaInventors: Yuki Kawashima, Asahi Yamato, Kohzoh Takahashi, Kiyoshi Nakagawa, Toshihiro Yanagi
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Patent number: 7973752Abstract: The present invention is so arranged as to include (a) gradation reference potential generating means including a group of output terminals whose voltages are determined in accordance with a voltage division ratio of one ladder resistor, so as to output gradation reference potentials, for example, of 1024, which is a 16 multiple of a required 64-gradations; (b) output terminal designating means including a memory for designating, among from the output terminals, an output terminal for each of the 64-gradations required, in accordance with the display modes; and (c) selecting means for selecting an output terminal that corresponds to an input gradation signal, among from the output terminals designated by the output terminal designating section, and for applying a voltage via the thus selected output terminal to a display screen.Type: GrantFiled: April 24, 2007Date of Patent: July 5, 2011Assignee: Sharp Kabushiki KaishaInventors: Kiyoshi Nakagawa, Toshihiro Yanagi, Taketoshi Nakano
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Patent number: 7671919Abstract: First to fourth lenses are aligned in an optical axis direction by a lens-barrel of a camera, an O-ring is disposed between the first lens and the lens-barrel, an O-ring is disposed between the fourth lens and the lens-barrel, a space is formed between the first and second lenses, a space is formed between the second and fourth lenses, a space is formed between the third and fourth lenses, and flow of air between the spaces is precluded. The camera thus configured is free of dewing on the lens or a protective plate exposed to the exterior, even when the inside temperature is raised due to heat generation in a CCD or a mounting substrate on which the CCD is mounted.Type: GrantFiled: March 4, 2005Date of Patent: March 2, 2010Assignee: Sony CorporationInventors: Keiichi Iwasaki, Yukimasa Yamaguchi, Kiyoshi Nakagawa
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Publication number: 20100014028Abstract: A liquid crystal panel comprises a temperature sensor (1) formed on a glass substrate (11). The temperature sensor (1) includes two junction structures (2) and (5). The junction structure (2) is formed such that two different semiconductor films (3) and (4) are joined together. The junction structure (5) is formed such that two different semiconductor films (6) and (7) are joined together. The liquid crystal panel outputs divided voltage between the voltage applied to the junction structure (2) and the voltage applied to the junction structure (5) as the voltage depending on the temperature of the liquid crystal panel. As the result, the liquid crystal panel comprising the temperature sensor (1) of simple structure and high performance is provided.Type: ApplicationFiled: June 6, 2007Publication date: January 21, 2010Inventors: Asahi Yamato, Kiyoshi Nakagawa, Toshihiro Yanagi
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Publication number: 20090267963Abstract: A control section (6) merely passes an incoming image data signal DAT onto a source driving section for display driving during the display of a still image. During the display of a moving image, the control section (6) converts, using a computing section (61) and a look-up table (5), a grayscale level signal in the incoming image data signal DAT to a grayscale level signal that is obtainable without using those application voltages at which the response speed of liquid crystal is slow. The control section (6) then outputs the resultant grayscale level signal to the source driving section for display driving.Type: ApplicationFiled: March 24, 2006Publication date: October 29, 2009Inventors: Yuki Kawashima, Asahi Yamato, Kohzoh Takahashi, Kiyoshi Nakagawa, Toshihiro Yanagi
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Publication number: 20090267884Abstract: A drive circuit of a liquid crystal display device performs line inversion drive based on a correction video signal V. A look-up table (12) includes two types of tables having stored therein correction values for use in overshoot drive. Based on a current-frame video signal X, a previous-frame video signal Y stored in a frame memory (11), and a polarity-reversing signal REV, a correction process portion (13) reads a correction value from the look-up table (12), and outputs the correction value being read as the correction video signal V. In such a manner, a correcting circuit (10) is used to control the degree of overshoot in accordance with the polarity-reversing signal REV. Thus, it is possible to suitably control the change in pixel brightness regardless of the polarity of the applied voltage, thereby preventing any fringes from being generated while displaying moving images.Type: ApplicationFiled: October 25, 2006Publication date: October 29, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Kozo Takahashi, Asahi Yamato, Kiyoshi Nakagawa, Takaaki Kawai
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Publication number: 20090251450Abstract: In one embodiment of the present application, an area control section receives a command specifying a video image display area or a dynamic image display area in the image data. The area control section stores a data of a previous frame screen in the frame memory only for the part which an overdrive is performed, based on the command. A control section outputs a received image data to a source drive section as it is for the image data being notified as a still image display area. For the image data being notified as a video image display area, the image data is converted based on a data stored in a Look-up Table, and performs the display which improves the response speed of the liquid crystal.Type: ApplicationFiled: August 29, 2006Publication date: October 8, 2009Inventors: Asahi Yamato, Kiyoshi Nakagawa
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Publication number: 20090244102Abstract: In one embodiment of the present invention, the liquid crystal display device of the invention performs an overshoot drive, including: an LCD having a liquid crystal panel for displaying video image; a frame memory installed outside of the LCD; and lookup table, the table with which third gray scale data most suitable for performing the overshoot drive to the LCD can be computed based on first gray scale data of a first frame and second gray scale data of a second frame, where the second frame is a frame right before the first frame and is stored in the frame memory in advance, wherein lookup table data is stored for each response speed characteristic of the LCD. Thus, without rewriting of lookup table data, the liquid crystal display device having the lookup table most suitable for performing the overshoot drive is realized while high display quality is maintained therein.Type: ApplicationFiled: August 29, 2006Publication date: October 1, 2009Inventors: Kiyoshi Nakagawa, Toshihiro Yanagi, Asahi Yamato, Yuki Kawashima, Kozo Takahashi
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Publication number: 20090135123Abstract: In one embodiment of the present invention, when a still image is displayed, applied voltages respectively corresponding to a total of n (n being an integer of not less than 4) types of gradation 0 to (n?1) are outputted to pixels. When a moving image is displayed, an applied voltage corresponding to a predetermined gradation m (1?m?(n?2)) is applied to the pixels instead of applied voltages respectively corresponding to gradations of less than the predetermined gradation m. Overdrive driving is performed with respect to a total of n types of gradation.Type: ApplicationFiled: February 7, 2006Publication date: May 28, 2009Inventors: Asahi Yamato, Yuki Kawashima, Kiyoshi Nakagawa, Kohzoh Takahashi, Toshihiro Yanagi
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Publication number: 20090079682Abstract: In one embodiment of the present invention, when a still image is displayed, applied voltages respectively corresponding to a total of n (n being an integer of not less than 4) types of gradation 0 to (n?1) are outputted to pixels. On the other hand, when a moving image is displayed, an applied voltage corresponding to a predetermined gradation m (1?m?(n?2)) is applied to the pixels instead of applied voltages respectively corresponding to gradations of less than the predetermined gradation m.Type: ApplicationFiled: February 2, 2006Publication date: March 26, 2009Inventors: Asahi Yamato, Yuki Kawashima, Kiyoshi Nakagawa, Kohzoh Takahashi, Toshihiro Yanagi
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Publication number: 20080299357Abstract: This invention provides a fabric having a foamed layer. The fabric is obtained by the foaming method which prevents to expand heat expansible micro capsules in a cross-linked resin. A foamed layer is laminated on the fabric material. The foamed layer is comprising of heat expanded micro capsules, a synthetic resin holding the capsules on the fabric material, silica fine powders which are hydrophilic and fine porous. The fabric is obtained by the following method. A synthetic resin solution comprising of heat expansible micro capsules and the silica fine powders is prepared. The solution is applied on the fabric material at all surface or pattered surface. The synthetic resin layer is formed after drying. After that, the heat expansible micro capsules are expanded by heating.Type: ApplicationFiled: July 16, 2008Publication date: December 4, 2008Applicants: UNITIKA FIBERS LTD., SEIREN CO., LTD.Inventors: Kiyoshi Nakagawa, Yoshiaki Kurushima, Masahiro Mizuma
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Patent number: 7262756Abstract: The present invention is so arranged as to include (a) gradation reference potential generating means including a group of output terminals whose voltages are determined in accordance with a voltage division ratio of one ladder resistor, so as to output gradation reference potentials, for example, of 1024, which is a 16 multiple of a required 64-gradations; (b) output terminal designating means including a memory for designating, among from the output terminals, an output terminal for each of the 64-gradations required, in accordance with the display modes; and (c) selecting means for selecting an output terminal that corresponds to an input gradation signal, among from the output terminals designated by the output terminal designating section, and for applying a voltage via the thus selected output terminal to a display screen.Type: GrantFiled: September 26, 2003Date of Patent: August 28, 2007Assignee: Sharp Kabushiki KaishaInventors: Kiyoshi Nakagawa, Toshihiro Yanagi, Taketoshi Nakano
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Publication number: 20070195039Abstract: The present invention is so arranged as to include (a) gradation reference potential generating means including a group of output terminals whose voltages are determined in accordance with a voltage division ratio of one ladder resistor, so as to output gradation reference potentials, for example, of 1024, which is a 16 multiple of a required 64-gradations; (b) output terminal designating means including a memory for designating, among from the output terminals, an output terminal for each of the 64-gradations required, in accordance with the display modes; and (c) selecting means for selecting an output terminal that corresponds to an input gradation signal, among from the output terminals designated by the output terminal designating section, and for applying a voltage via the thus selected output terminal to a display screen.Type: ApplicationFiled: April 24, 2007Publication date: August 23, 2007Applicant: Sharp Kabushiki KaishaInventors: Kiyoshi Nakagawa, Toshihiro Yanagi, Taketoshi Nakano
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Patent number: 7027742Abstract: An optical single-sideband modulated signal generator, comprising optical modulation means for amplitude-modulating an optical carrier by an electric modulation signal to obtain an optical double-sideband modulated signal, and optical signal sideband suppressor means for suppressing either one of the sidebands of the optical double-sideband modulated signal to derive therefrom an optical single-sideband modulated signal. The optical modulation means provides, respectively, first optical double-sideband modulated signal and second optical double-sideband modulated signal on branched optical waveguide paths, which have at least one optical carrier phase-shifter for establishing a relative phase difference of 90° between baseband signal components at the branched optical waveguide paths and at least one delay means for compensation for a relative delay difference between the baseband signal components at the branched optical waveguide paths.Type: GrantFiled: February 7, 2002Date of Patent: April 11, 2006Assignees: Tokyo Communication Equipment Mfg. Co., Ltd.Inventors: Kikuji Tanaka, Kiyoshi Nakagawa
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Publication number: 20050206780Abstract: First to fourth lenses are aligned in an optical axis direction by a lens-barrel of a camera, an O-ring is disposed between the first lens and the lens-barrel, an O-ring is disposed between the fourth lens and the lens-barrel, a space is formed between the first and second lenses, a space is formed between the second and fourth lenses, a space is formed between the third and fourth lenses, and flow of air between the spaces is precluded. The camera thus configured is free of dewing on the lens or a protective plate exposed to the exterior, even when the inside temperature is raised due to heat generation in a CCD or a mounting substrate on which the CCD is mounted.Type: ApplicationFiled: March 4, 2005Publication date: September 22, 2005Inventors: Keiichi Iwasaki, Yukimasa Yamaguchi, Kiyoshi Nakagawa
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Publication number: 20040085635Abstract: The present invention is so arranged as to include (a) gradation reference potential generating means including a group of output terminals whose voltages are determined in accordance with a voltage division ratio of one ladder resistor, so as to output gradation reference potentials, for example, of 1024, which is a 16 multiple of a required 64-gradations; (b) output terminal designating means including a memory for designating, among from the output terminals, an output terminal for each of the 64-gradations required, in accordance with the display modes; and (c) selecting means for selecting an output terminal that corresponds to an input gradation signal, among from the output terminals designated by the output terminal designating section, and for applying a voltage via the thus selected output terminal to a display screen.Type: ApplicationFiled: September 26, 2003Publication date: May 6, 2004Applicant: SHARP KABUSHIKI KAISHAInventors: Kiyoshi Nakagawa, Toshihiro Yanagi, Taketoshi Nakano
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Patent number: 6570111Abstract: An electronic equipment having a lever mechanism equipped with a button which when pushed operates an electric switch mounted to a printed wiring circuit board. The lever mechanism includes a first member having an end thereof which is bendably connected to the electronic equipment via a first elastic portion. A second member is also provided in this lever mechanism with an end thereof which is bendably connected to the electronic equipment via a second elastic portion. This elastic portion includes an arm for operating the electric switch. The first lever members are connected by third and fourth elastic portions mounted to the ends of the coupling member to transmit a displacement caused by the bend of the first lever member to the second lever member.Type: GrantFiled: December 6, 2000Date of Patent: May 27, 2003Assignees: Sony Corporation, Sony Technology Malaysia SDN. BHD.Inventors: Kiyoshi Nakagawa, Koichi Yamaguchi
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Publication number: 20020149826Abstract: An optical single-sideband modulated signal generator, comprising optical modulation means for amplitude-modulating an optical carrier by an electric modulation signal to obtain an optical double-sideband modulated signal, and optical signal sideband suppressor means for suppressing either one of the sidebands of the optical double-sideband modulated signal to derive therefrom an optical single-sideband modulated signal. The optical modulation means provides, respectively, first optical double-sideband modulated signal and second optical double-sideband modulated signal on branched optical waveguide paths, which have at least one optical carrier phase-shifter for establishing a relative phase difference of 90° between baseband signal components at the branched optical waveguide paths and at least one delay means for compensation for a relative delay difference between the baseband signal components at the branched optical waveguide paths.Type: ApplicationFiled: February 7, 2002Publication date: October 17, 2002Inventors: Kikuji Tanaka, Kiyoshi Nakagawa
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Publication number: 20010003325Abstract: It is an object to provide an electronic equipment with comparative ease of freely choosing the push-button location and with satisfactory operability of the push-button device.Type: ApplicationFiled: December 6, 2000Publication date: June 14, 2001Inventors: Kiyoshi Nakagawa, Koichi Yamaguchi