Patents by Inventor Mitsuo Hagiwara
Mitsuo Hagiwara 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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Publication number: 20240135894Abstract: A panel drive circuit having an input interface to which an image signal is input, a gamma correction circuit that corrects an image processing signal generated by an image processing circuit performing image processing on the image signal input to the input interface, such that a gamma correction signal thus generated has predetermined gamma characteristics, an unevenness correction circuit that corrects the gamma correction signal generated through the correction by the gamma correction circuit, based on correction data for reducing unevenness of a display panel, and an D/A convertor that has a variable output voltage range, and performs D/A conversion on an unevenness correction signal generated through the correction by the unevenness correction circuit and outputs the signal thus generated to the display panel, and the unevenness correction circuit changes the correction method according to the output voltage range of the D/A convertor.Type: ApplicationFiled: March 10, 2021Publication date: April 25, 2024Applicant: IIX INC.Inventors: Makoto HATAKENAKA, Takashi SAKAMOTO, Mitsuo HAGIWARA, Norimasa SENDA, Yoshihide MINEGISHI, Hiroshi MURASE
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Publication number: 20240071337Abstract: An unevenness correction data generation device suppressing the appearance of color unevenness when turning on R, G and B together includes a pattern generation unit causing red, green and blue images, in which display panel subpixels are turned on at the same gray level, to be displayed, a monochrome camera, a control unit generating first red, green and blue luminance correction data based on shooting data of the monochrome camera, a pattern generation unit causing the display panel to display a white image by causing red, green and blue images corrected with the respective luminance correction data to be displayed simultaneously, a color camera shooting the white image in color, and a control unit generating color correction data for correcting color unevenness based on shooting data of the color camera and generates unevenness correction data based on the red, green and blue luminance correction data and the color correction data.Type: ApplicationFiled: February 4, 2021Publication date: February 29, 2024Applicant: IIX INC.Inventors: Makoto HATAKENAKA, Takashi SAKAMOTO, Hiroshi MURASE, Mitsuo HAGIWARA, Hideaki SUZUKI, Kazunori YOSHIZAWA
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Patent number: 9153271Abstract: The optical disc device has a circuit which forms a focus error signal for focus servo control based on reflection light from an optical disc exposed to laser light. Also, the device has a data processing unit which can control by feedback a position to which an objective lens is moved by a focusing actuator based on a focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit for the focusing actuator is switched to a smaller one in comparison to that in feedback control.Type: GrantFiled: June 6, 2014Date of Patent: October 6, 2015Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Yoshimi Iso, Mitsuo Hagiwara, Mitsuyuki Kimura
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Publication number: 20140286148Abstract: The optical disc device has a circuit which forms a focus error signal for focus servo control based on reflection light from an optical disc exposed to laser light. Also, the device has a data processing unit which can control by feedback a position to which an objective lens is moved by a focusing actuator based on a focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit for the focusing actuator is switched to a smaller one in comparison to that in feedback control.Type: ApplicationFiled: June 6, 2014Publication date: September 25, 2014Inventors: Yoshimi ISO, Mitsuo HAGIWARA, Mitsuyuki KIMURA
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Patent number: 8780680Abstract: The optical disc device has a circuit which forms a focus error signal for focus servo control based on reflection light from an optical disc exposed to laser light. Also, the device has a data processing unit which can control by feedback a position to which an objective lens is moved by a focusing actuator based on a focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit for the focusing actuator is switched to a smaller one in comparison to that in feedback control.Type: GrantFiled: June 30, 2011Date of Patent: July 15, 2014Assignee: Renesas Electronics CorporationInventors: Yoshimi Iso, Mitsuo Hagiwara, Mitsuyuki Kimura
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Publication number: 20110255386Abstract: The optical disc device has a circuit which forms a focus error signal for focus servo control based on reflection light from an optical disc exposed to laser light. Also, the device has a data processing unit which can control by feedback a position to which an objective lens is moved by a focusing actuator based on a focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit for the focusing actuator is switched to a smaller one in comparison to that in feedback control.Type: ApplicationFiled: June 30, 2011Publication date: October 20, 2011Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Yoshimi ISO, Mitsuo HAGIWARA, Mitsuyuki KIMURA
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Patent number: 7995431Abstract: The optical disc device has a circuit 4 which forms a focus error signal FER for focus servo control based on reflection light from an optical disc exposed to laser light. A data processing unit 2 can control by feedback a position to which an objective lens is moved by a focusing actuator 30 based on the focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit 40 for the focusing actuator is switched to a smaller one in comparison to that in feedback control.Type: GrantFiled: May 23, 2005Date of Patent: August 9, 2011Assignee: Renesas Electronics CorporationInventors: Yoshimi Iso, Mitsuo Hagiwara, Mitsuyuki Kimura
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Publication number: 20090213705Abstract: The optical disc device has a circuit 4 which forms a focus error signal FER for focus servo control based on reflection light from an optical disc exposed to laser light. A data processing unit 2 can control by feedback a position to which an objective lens is moved by a focusing actuator 30 based on the focus error signal. In label printing, the data processing unit controls, by feedforward, a position to which the objective lens is moved by the focusing actuator based on control data for label printing. The operation resolution of the focusing actuator in feedforward control is made higher than that in feedback control. Thus, an intended position control accuracy is achieved in feedforward control. For instance, in feedforward control, the gain of the driver circuit 40 for the focusing actuator is switched to a smaller one in comparison to that in feedback control.Type: ApplicationFiled: May 23, 2005Publication date: August 27, 2009Inventors: Yoshimi Iso, Mitsuo Hagiwara, Mitsuyuki Kimura
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Patent number: 7076649Abstract: A microcomputer which is an integrated circuit including an electrically erasable and programmable nonvolatile semiconductor memory and a central processing unit is used for control of a disk drive. The nonvolatile semiconductor memory holds an application program such as a recorded information reproducing control program in an application program area, and holds a reboot program used for updating the application program in a reboot program area. The central processing unit executes the reboot program to rewrite the application program in whole or part, in response to a rewrite command for the application program which is supplied from the outside.Type: GrantFiled: January 28, 2004Date of Patent: July 11, 2006Assignees: Renesas Technology Corp., Hitachi ULSI Systems Co., Ltd.Inventors: Mitsuo Hagiwara, Hiromasa Takahashi, Satoshi Yamato, Nobuo Shibasaki, Mitsuo Yotsutani, Tsutomu Ishii
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Publication number: 20040186952Abstract: A microcomputer (5) which is an integrated circuit including an electrically erasable and programmable nonvolatile semiconductor memory (56) and a central processing unit (51) is used for control of a disk drive (2). The nonvolatile semiconductor memory holds an application program such as a recorded information reproducing control program in an application program area (561), and holds a reboot program used for updating the application program in a reboot program area (560). The central processing unit executes the reboot program to rewrite the application program in whole or part, in response to a rewrite command for the application program which is supplied from the outside.Type: ApplicationFiled: January 28, 2004Publication date: September 23, 2004Applicants: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.Inventors: Mitsuo Hagiwara, Hiromasa Takahashi, Satoshi Yamato, Nobuo Shibasaki, Mitsuo Yotsutani, Tsutomu Ishii
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Patent number: 6393561Abstract: A microcomputer (5) which is an integrated circuit including an electrically erasable and programmable nonvolatile semiconductor memory (56) and a central processing unit (51) is used for control of a disk drive (2). The nonvolatile semiconductor memory holds an application program such as a recorded information reproducing control program in an application program area (561), and holds a reboot program used for updating the application program in a reboot program area (560). The central processing unit executes the reboot program to rewrite the application program in whole or part, in response to a rewrite command for the application program which is supplied from the outside.Type: GrantFiled: February 10, 1999Date of Patent: May 21, 2002Assignee: Hitachi, Ltd.Inventors: Mitsuo Hagiwara, Hiromasa Takahashi, Satoshi Yamato, Nobuo Shibasaki, Mitsuo Yotsutani, Tsutomu Ishii
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Publication number: 20020059515Abstract: A microcomputer (5) which is an integrated circuit including an electrically erasable and programmable nonvolatile semiconductor memory (56) and a central processing unit (51) is used for control of a disk drive (2). The nonvolatile semiconductor memory holds an application program such as a recorded information reproducing control program in an application program area (561), and holds a reboot program used for updating the application program in a reboot program area (560). The central processing unit executes the reboot program to rewrite the application program in whole or part, in response to a rewrite command for the application program which is supplied from the outside.Type: ApplicationFiled: December 21, 2001Publication date: May 16, 2002Applicant: Hitachi, Ltd.Inventors: Mitsuo Hagiwara, Hiromasa Takahashi, Satoshi Yamato, Nobuo Shibasaki, Mitsuo Yotsutani, Tsutomu Ishii
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Patent number: 4638782Abstract: In an control apparatus for controlling a timing of injection of fuel to be injected into an internal combustion engine, the apparatus comprises a closed loop system in which the data showing the actual timing of injection of of fuel is fed back. When the condition of the operation of the engine becomes a predetermined state, the control system is changed from the closed loop system to another system in which an adjusting member for adjusting the timing of injection of fuel is controlled by a signal which is not related to the actual timing of injection. As a result, the stability of the operation in low engine speed zone is remarkably improved.Type: GrantFiled: January 10, 1984Date of Patent: January 27, 1987Assignee: Diesel Kiki Co., Ltd.Inventors: Seishi Yasuhara, Mitsuo Hagiwara, Kazuo Inoue, Kyoichi Fujimori, Akira Sekiguchi, Hiroshi Okada