Patents by Inventor Yoshinori Ogawa
Yoshinori Ogawa 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: 7173351Abstract: A motor in which drive coils are arranged in an axial direction of a cylindrical rotor magnet of which an outer peripheral surface is magnetized, the drive coils are cylindrical bodies having respectively center holes into which a rotor shaft is to be inserted, curling cases each of which is formed by bending a flat plate made of a magnetic material into a tubular shape, surround the drive coils, respectively, and surround a cylindrical surface of the rotor magnet with a predetermined gap therebetween, and portions of the surfaces of the curling cases, which face the drive coils associated therewith, serve as yoke parts, respectively, while other portions of the curling cases, which face the rotor magnet, are formed to be pole teeth, and also serve as yoke plates.Type: GrantFiled: March 26, 2003Date of Patent: February 6, 2007Assignee: Nidec Sankyo CorporationInventor: Yoshinori Ogawa
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Publication number: 20060250750Abstract: An electrode for an electrochemical capacitor comprising an electrode, a collector, an electrolyte solution and a separator, wherein said electrode contains at least a conductive material and a polyimide silicone expressed by the following general formula (1) having an average molecular weight of 5,000-150,000 expressed by general formula (I).Type: ApplicationFiled: May 8, 2006Publication date: November 9, 2006Inventors: Yoshinori Yoneda, Michihiro Sugou, Yoshinori Ogawa
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Publication number: 20060202565Abstract: A first yoke member is received on a first reference plane defined on a support body. A second yoke member is coupled to the first yoke member so as to define a space for accommodation of a voice coil between the first and second yoke members. The second yoke member is opposed to a second reference plane, different from the first reference plane, defined on the support body. A screw member is engaged with the second yoke member for movement in the direction intersecting the second reference plane. The second yoke member is received on the second reference plane of the support body based on the movement of the screw member. Even if a gap happens to exist between the second yoke member and the second reference plane due to dimensional errors, the second yoke member is reliably supported on the support body.Type: ApplicationFiled: July 5, 2005Publication date: September 14, 2006Applicant: FUJITSU LIMITEDInventor: Yoshinori Ogawa
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Publication number: 20060103243Abstract: A motor in which drive coils are arranged in an axial direction of a cylindrical rotor magnet of which an outer peripheral surface is magnetized, the drive coils are cylindrical bodies having respectively center holes into which a rotor shaft is to be inserted, curling cases each of which is formed by bending a flat plate made of a magnetic material into a tubular shape, surround the drive coils, respectively, and surround a cylindrical surface of the rotor magnet with a predetermined gap therebetween, and portions of the surfaces of the curling cases, which face the drive coils associated therewith, serve as yoke parts, respectively, while other portions of the curling cases, which face the rotor magnet, are formed to be pole teeth, and also serve as yoke plates.Type: ApplicationFiled: March 26, 2003Publication date: May 18, 2006Inventor: Yoshinori Ogawa
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Patent number: 6977635Abstract: A line inverse driving method is performed by outputting voltages for gradation display in mutually reverse polarities with respect to pixels adjacent in a data signal line direction. A separation switch is provided between an output stage of a data driver and a data signal line to separate them. In a blanking period, the data signal line is cut off, and in the selection-scanning period of a scanning signal line to be scanned first, the scanning signal line to be scanned next is also subjected to the selection-scanning. With this structure, respective charges in adjacent pixel capacitors are neutralized, and it is therefore possible to reduce a power consumption. Further, since a short-circuit can be performed at short distance, the problem of dull waveform can be suppressed, thereby realizing an image display device suited for a large screen.Type: GrantFiled: March 7, 2002Date of Patent: December 20, 2005Assignee: Sharp Kabushiki KaishaInventors: Yoshinori Ogawa, Masafumi Katsutani
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Patent number: 6933631Abstract: A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes and the sintered bearings are formed together.Type: GrantFiled: August 26, 2004Date of Patent: August 23, 2005Assignee: Sankyo Seiki Mfg. Co., Ltd.Inventor: Yoshinori Ogawa
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Patent number: 6921995Abstract: A motor comprises a casing made of magnetic material for housing a rotor and a coil wherein side surfaces of the casing have openings. The openings are closed by the magnetic plates that are thinner than the thickness of the material of the casing.Type: GrantFiled: August 26, 2003Date of Patent: July 26, 2005Assignee: Sankyo Seiki Mfg. Co., Ltd.Inventors: Kiyoshi Nishimura, Yoshinori Ogawa
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Publication number: 20050023908Abstract: A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes and the sintered bearings are formed together.Type: ApplicationFiled: August 26, 2004Publication date: February 3, 2005Inventor: Yoshinori Ogawa
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Display driving device and manufacturing method thereof and liquid crystal module employing the same
Patent number: 6839046Abstract: A gate driver mounted on a TCP is mounted on a print substrate. The input/output terminal, input terminal, and power terminal of the gate driver at one end of a group of gate drivers are connected to a controller by this mount, and a clock signal, select signal, and power voltage are transferred in a direction of the gate drivers. Meanwhile, the input terminal of a gate driver at the other end of the group of gate drivers is connected to the controller, and a start pulse signal is transferred in a direction of the gate drivers. As a result, it is possible to provide a display driving device in which a start pulse signal is fed in at a correct timing, a manufacturing method thereof, and a liquid crystal module employing such a display driving device.Type: GrantFiled: December 13, 1999Date of Patent: January 4, 2005Assignee: Sharp Kabushiki KaishaInventors: Yukihisa Orisaka, Yoshinori Ogawa -
Patent number: 6800969Abstract: A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes and the sintered bearings are formed together.Type: GrantFiled: December 5, 2002Date of Patent: October 5, 2004Assignee: Sankyo Seiki Mfg. Co., Ltd.Inventor: Yoshinori Ogawa
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Publication number: 20040179029Abstract: A display device includes a display panel including a plurality of pixels provided in matrix; a source driver for sequentially driving, in a vertical direction, each pixel line provided along a horizontal direction, the source driver causing the display panel to display an image that is in accordance with display data; gradation display reference voltage generating circuits for generating reference voltages that represent multiple gradations, the reference voltages being used for displaying the image in the multiple gradations; a &ggr;-correction adjustment section for adjusting the reference voltages so as to perform &ggr;-correction of the display data; and a control section for controlling the &ggr;-correction adjustment section so as to change the reference voltages on which the &ggr;-correction has been performed, the control section decreasing display unevenness between pixels that are adjacent to one another. The display device can have a large display screen and can prevent cost increase.Type: ApplicationFiled: March 11, 2004Publication date: September 16, 2004Inventors: Yoshinori Ogawa, Shigeki Tanaka
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Publication number: 20040164943Abstract: The liquid crystal display device includes: a plurality of scanning lines; a plurality of signal lines provided so as to cross the scanning signals; pixel capacitors, having pixel electrodes and counter electrodes (common electrodes), and corresponding to a liquid crystal layer, which are respectively formed on pixels corresponding to intersections of the scanning lines and the signal lines. The liquid crystal layer has liquid crystal molecules, aligned in random directions throughout a liquid crystal panel, each of which has a substantially fixed twist angle in a direction perpendicular to substrates for sandwiching the liquid crystal layer. In the liquid crystal display device, there is provided a Vcom adjustment circuit which supplies common electrode voltages to the counter electrodes (common electrodes) and is capable of adjusting the common electrode voltages. As a result, it is possible to display an image which can be viewed at a wider visual angle.Type: ApplicationFiled: December 5, 2003Publication date: August 26, 2004Inventors: Yoshinori Ogawa, Shigeki Tanaka
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Patent number: 6771248Abstract: A display module of the present invention includes a liquid crystal panel driven by a driving signal in a column direction and a driving signal in a row direction; a source driver for supplying the driving signal in the column direction; a gate driver for supplying the driving signal in the row direction; a TCP type film provided with the source driver; a TCP type film provided with the gate driver; and a controller circuit for controlling the gate driver and the source driver, which is installed on the TCP type film together with the source driver or the gate driver. With this structure, the number of parts can be reduced, achieving miniaturization, weight reduction, and cost reduction.Type: GrantFiled: October 24, 2001Date of Patent: August 3, 2004Assignee: Sharp Kabushiki KaishaInventors: Shigeki Tanaka, Yoshinori Ogawa
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Patent number: 6757214Abstract: A synchronous type semiconductor device which inputs/outputs data with respect to a host includes a memory circuit, command decoder and CAS latency setting circuit. The command decoder decodes a command control signal input from the host in synchronism with a clock input from the host and outputs the decoded command to the memory circuit. The command includes a read command and mode register set command. The CAS latency setting circuit sets CAS latency in a read cycle based on a predetermined command output from the command decoder and a function control signal input from the host. The predetermined command is a command other than the mode register set command.Type: GrantFiled: May 22, 2003Date of Patent: June 29, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Kazuaki Kawaguchi, Shigeo Ohshima, Nobuo Watanabe, Yoshinori Ogawa
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Publication number: 20040104633Abstract: A motor comprises a casing made of magnetic material for housing a rotor and a coil wherein side surfaces of the casing have openings. The openings are closed by the magnetic plates that are thinner than the thickness of the material of the casing.Type: ApplicationFiled: August 26, 2003Publication date: June 3, 2004Inventors: Kiyoshi Nishimura, Yoshinori Ogawa
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Publication number: 20040007924Abstract: A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes and the sintered bearings are formed together.Type: ApplicationFiled: December 5, 2002Publication date: January 15, 2004Inventor: Yoshinori Ogawa
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Patent number: 6677923Abstract: The present invention includes: standard voltage producing means for producing 2n tone display voltages from incoming first reference voltages in accordance with n-bit display data; and selecting means for selecting a voltage from the 2n tone display voltages in accordance with incoming display data, for transmission to a liquid crystal panel through a plurality of output terminals with no further processing, wherein the standard voltage producing means includes: generation means for generating a second reference voltage from adjacent two of the first reference voltages arranged in ascending or descending order, the second reference voltage having an intermediate level between those of the adjacent first reference voltages; buffer means for impedance-converting the second reference voltage for output; and voltage dividing means for producing a voltage having an intermediate level between those of the adjacent first reference voltages and of adjacent ones of the first and second reference voltages by volType: GrantFiled: September 28, 2001Date of Patent: January 13, 2004Assignee: Sharp Kabushiki KaishaInventors: Noriyuki Kajihara, Yoshinori Ogawa
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Publication number: 20030223293Abstract: A synchronous type semiconductor device which inputs/outputs data with respect to a host includes a memory circuit, command decoder and CAS latency setting circuit. The command decoder decodes a command control signal input from the host in synchronism with a clock input from the host and outputs the decoded command to the memory circuit. The command includes a read command and mode register set command. The CAS latency setting circuit sets CAS latency in a read cycle based on a predetermined command output from the command decoder and a function control signal input from the host. The predetermined command is a command other than the mode register set command.Type: ApplicationFiled: May 22, 2003Publication date: December 4, 2003Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kazuaki Kawaguchi, Shigeo Ohshima, Nobuo Watanabe, Yoshinori Ogawa
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Patent number: 6621478Abstract: A liquid crystal drive device includes: a shift register circuit for transfer a start pulse signal SP in synchronism with a clock signal CK; an input latch circuit for picking up display data DR, DG, and DB in synchronism with the clock signal CK; and a sampling memory circuit for sampling and storing the display data DR, DG, and DB according to the transferred start pulse signal SP, wherein the input latch circuit is adapted to pick up the display data DR, DG, and DB at both a leading edge and a trailing edge of the clock signal CK. The liquid crystal drive device provides a versatile solution to improvement of the resolution of the liquid crystal display.Type: GrantFiled: November 28, 2000Date of Patent: September 16, 2003Assignee: Sharp Kabushiki KaishaInventors: Nobuhisa Sakaguchi, Yoshinori Ogawa
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Patent number: 6603466Abstract: A semiconductor device includes source drivers connected in cascade, each of which is provided with a data latch output circuit for converting input display data into parallel data and a data output control circuit for converting the display data into serial data and outputting the serial data to the next source driver. The data latch output circuit divides and fetches the display data at both of the leading and trailing edges of a transfer-use clock signal of each source driver. With this structure, the clock frequency of the transfer-use clock signal can be made lower than a necessary data transfer rate of the display data while stabilizing the transfer of the display data. It is therefore possible to widen the operating frequency range of the transfer-use clock signal, and provide a highly reliable semiconductor device and a display device module using the semiconductor device.Type: GrantFiled: June 22, 2000Date of Patent: August 5, 2003Assignee: Sharp Kabushiki KaishaInventors: Nobuhisa Sakaguchi, Yoshinori Ogawa