Patents by Inventor Mitsuhiro Shigeta
Mitsuhiro Shigeta 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: 10032249Abstract: An image generating apparatus includes an acquiring unit configured to acquire a captured image of a road, a region extraction unit configured to extract an image of a trapezoidal region is enclosed by two vanishing lines which are converged to a vanishing point in a depth direction of the captured image and two parallel lines which respectively intersect with the two vanishing lines from the captured image, a transformation unit configured to transform the image of the trapezoidal region into an image of a rectangular region using a geometric transformation model which transforms the trapezoidal region extracted by the region extraction unit into the rectangular region, and a generation unit configured to generate an image for enlarging and displaying a moving body or a structure on the road present at a distant view part of the captured image based on the transformed image having the rectangular region.Type: GrantFiled: September 5, 2014Date of Patent: July 24, 2018Assignee: Sakai Display Products CorporationInventor: Mitsuhiro Shigeta
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Publication number: 20180136509Abstract: Provided are a method of dividing a display member that enables to excellently and efficiently cut the film and the adhesive without generating a residue and to scribe a substrate, so that the substrate can be divided easily and excellently, and a method for manufacturing a liquid crystal display apparatus including dividing the substrate using the method of dividing the display member. A TFT substrate (2) and a CF substrate (4) of a display member (1) are bonded with a liquid crystal layer (3) between using a sealing material. A polarization film (6) is adhered to a surface of the CF substrate, the surface opposite to the liquid crystal layer, using a curing type adhesive (5). Using an ultrasonic cutting roller (20) which can be vibrated by ultrasonic waves, the polarization film and the curing type adhesive are cut, the CF substrate is scribed, and the CF substrate is divided.Type: ApplicationFiled: December 26, 2017Publication date: May 17, 2018Inventor: MITSUHIRO SHIGETA
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Patent number: 9754547Abstract: A display apparatus includes a plurality of display elements, signal lines which supply a signal voltage to be applied to the display elements, switching elements which are provided corresponding to each of the display elements and are configured to control conduction/non-conduction between the display elements and the signal lines by opening and closing, scanning lines configured to supply a control voltage to control the opening and closing of the switching elements, a plurality of auxiliary capacitor parts connected to each of the display elements, main wirings configured to supply a voltage to be applied to the auxiliary capacitor parts, one or a plurality of sub-wirings electro-statically coupled to the main wirings and a unit configured to apply the voltage to be applied to the auxiliary capacitor parts to the main wirings, and apply a voltage having a polarity reverse to that of the voltage to the one or plurality of sub-wirings.Type: GrantFiled: May 27, 2014Date of Patent: September 5, 2017Assignee: Sakai Display Products CorporationInventor: Mitsuhiro Shigeta
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Patent number: 9703442Abstract: A position detection device capable of sensing with high resolution and high precision is provided.Type: GrantFiled: September 17, 2014Date of Patent: July 11, 2017Assignee: Sakai Display Products CorporationInventor: Mitsuhiro Shigeta
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Publication number: 20170132751Abstract: An image generating apparatus includes an acquiring unit configured to acquire a captured image of a road, a region extraction unit configured to extract an image of a trapezoidal region is enclosed by two vanishing lines which are converged to a vanishing point in a depth direction of the captured image and two parallel lines which respectively intersect with the two vanishing lines from the captured image, a transformation unit configured to transform the image of the trapezoidal region into an image of a rectangular region using a geometric transformation model which transforms the trapezoidal region extracted by the region extraction unit into the rectangular region, and a generation unit configured to generate an image for enlarging and displaying a moving body or a structure on the road present at a distant view part of the captured image based on the transformed image having the rectangular region.Type: ApplicationFiled: September 5, 2014Publication date: May 11, 2017Inventor: Mitsuhiro Shigeta
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Publication number: 20170115776Abstract: A position detection device capable of sensing with high resolution and high precision is provided.Type: ApplicationFiled: September 17, 2014Publication date: April 27, 2017Inventor: Mitsuhiro Shigeta
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Patent number: 9251761Abstract: A gray scale correction method for a display device includes a step of setting a target value including a target luminance and a target chromaticity of a color display pixel (S22), a step of measuring tristimulus values of each of a plurality of reference colors and each of a plurality of comparative colors in accordance with a prescribed gamma characteristic (S24), a step of finding a reference value and a comparative value from the measured tristimulus values (S26), and a step of correcting a gray scale based on the target value, the reference value and the comparative value (S28).Type: GrantFiled: January 12, 2012Date of Patent: February 2, 2016Assignee: Sharp Kabushiki KaishaInventors: Mitsuhiro Shigeta, Nobuo Okano
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Publication number: 20160012793Abstract: A display apparatus includes a plurality of display elements, signal lines which supply a signal voltage to be applied to the display elements, switching elements which are provided corresponding to each of the display elements and are configured to control conduction/non-conduction between the display elements and the signal lines by opening and closing, scanning lines configured to supply a control voltage to control the opening and closing of the switching elements, a plurality of auxiliary capacitor parts connected to each of the display elements, main wirings configured to supply a voltage to be applied to the auxiliary capacitor parts, one or a plurality of sub-wirings electro-statically coupled to the main wirings and a unit configured to apply the voltage to be applied to the auxiliary capacitor parts to the main wirings, and apply a voltage having a polarity reverse to that of the voltage to the one or plurality of sub-wirings.Type: ApplicationFiled: May 27, 2014Publication date: January 14, 2016Inventor: Mitsuhiro Shigeta
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Publication number: 20130293567Abstract: A gray scale correction method for a display device includes a step of setting a target value including a target luminance and a target chromaticity of a color display pixel (S22), a step of measuring tristimulus values of each of a plurality of reference colors and each of a plurality of comparative colors in accordance with a prescribed gamma characteristic (S24), a step of finding a reference value and a comparative value from the measured tristimulus values (S26), and a step of correcting a gray scale based on the target value, the reference value and the comparative value (S28).Type: ApplicationFiled: January 12, 2012Publication date: November 7, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Mitsuhiro Shigeta, Nobuo Okano
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Patent number: 8493299Abstract: In cases where the amount of gradation transition is greater than a threshold value, a modulation processing section corrects image data D of a current frame by making an interpolation calculation with reference to a look-up table, and output the image data D thus corrected. In cases where the amount of gradation transition is not more than the threshold value, the modulation processing section directly outputs the image data D of the current frame.Type: GrantFiled: December 8, 2005Date of Patent: July 23, 2013Assignee: Sharp Kabushiki KaishaInventors: Makoto Shiomi, Mitsuhiro Shigeta, Kazunari Tomizawa
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Publication number: 20130088530Abstract: In a method of driving a liquid crystal panel, an overshoot signal is applied to the liquid crystal panel to display images on the liquid crystal panel. An overshoot level C is selected from a plurality of overshoot levels Dn. In this selecting, difference values between momentary values of a response waveform gn and momentary values of an ideal waveform f are obtained and added for a predetermined period and a minimum first error value E1 is obtained. One of the overshoot levels Dn corresponding to the response waveform gn having the minimum first error value E1 is selected as the overshoot level C. One of the overshoot levels Dn is selected by using an average value from the values obtained for the predetermined period similarly to humans' recognition of the liquid crystal display element. Accordingly, tailing or an image failure is less likely to occur.Type: ApplicationFiled: June 3, 2011Publication date: April 11, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Mitsuhiro Shigeta, Nobuo Okano, Toshihisa Uchida, Yukio Yoshida, Kazuya Nakahata
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Publication number: 20130076608Abstract: A method of driving a liquid crystal panel includes setting a gradation voltage corresponding to each gradation level with using a setting gamma function, and selecting the gradation voltage from a group of gradation voltages corresponding to a gradation level of the signal with using a selecting gamma function. A gamma value of the setting gamma function is different from a gamma value of the selecting gamma function. According to the driving method, if the gradation voltage that easily causes tailing or an image failure and the gradation voltage that hardly causes tailing or an image failure are applied to the display according to the gradation level of the input data signal, the gamma value of the setting gamma function is adjusted and unevenness is less likely to be caused by the gradation voltage. Accordingly, tailing or an image failure is less likely to occur.Type: ApplicationFiled: June 3, 2011Publication date: March 28, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Mitsuhiro Shigeta, Toshihisa Uchida
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Publication number: 20110261268Abstract: A liquid crystal display of the present invention contains a first panel and a second panel being stacked. Adjacent pairs of polarizers (A to C) disposed on the panels form crossed Nicols. When the first panel produces a display according to a first display signal, the second panel produces a display according to a second display signal obtained from the first display signal. Each of the two joined panels is provided with a light diffusion layer having a light diffusing property. The provision of the light diffusion layers enables reducing moire pattern occurrences which would otherwise markedly increase when two liquid crystal panels are stacked. As a result, the liquid crystal display has high display quality.Type: ApplicationFiled: June 29, 2011Publication date: October 27, 2011Applicant: Sharp Kabushiki KaishaInventors: Nobuhiko Nakai, Mitsuaki Hirata, Mitsuhiro Shigeta, Naoshi Yamada, Toshihide Tsubata, Shigeaki Mizushima, Yoshiki Takata, Masayuki Katakami, Makoto Shiomi
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Patent number: 8009248Abstract: A liquid crystal display of the present invention contains a first panel and a second panel being stacked. Adjacent pairs of polarizers (A to C) disposed on the panels form crossed Nicols. When the first panel produces a display according to a first display signal, the second panel produces a display according to a second display signal obtained from the first display signal. Each of the two joined panels is provided with a light diffusion layer having a light diffusing property. The provision of the light diffusion layers enables reducing moire pattern occurrences which would otherwise markedly increase when two liquid crystal panels are stacked. As a result, the liquid crystal display has high display quality.Type: GrantFiled: September 27, 2006Date of Patent: August 30, 2011Assignee: Sharp Kabushiki KaishaInventors: Nobuhiko Nakai, Mitsuaki Hirata, Mitsuhiro Shigeta, Naoshi Yamada, Toshihide Tsubata, Shigeaki Mizushima, Yoshiki Takata
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Patent number: 7936347Abstract: A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data.Type: GrantFiled: March 8, 2010Date of Patent: May 3, 2011Assignee: Sharp Kabushiki KaishaInventors: Tomoo Furukawa, Makoto Shiomi, Tai Shiraishi, Mitsuhiro Shigeta
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Publication number: 20100164923Abstract: A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data.Type: ApplicationFiled: March 8, 2010Publication date: July 1, 2010Inventors: Tomoo Furukawa, Makoto Shiomi, Tai Shiraishi, Mitsuhiro Shigeta
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Patent number: 7738000Abstract: A driving system of the present invention for use in a displaying device is provided with a pseudo bit-depth extension section. In the pseudo bit-depth extension section, a noise pattern is added to upper-n-bit data of an input signal D0 in m-bit, where (i) m is an integer of 9 or greater, and (ii) n is an integer of 8 or greater, but less than m. Then, upper-n-bit of data D1 thus obtained from the D0 is outputted, as output data D2, from the pseudo bit-depth extension section. The driving system is further provided with an overshoot-driving section for carrying out an overshoot-driving with respect to each of pixels. A noise amount of the noise pattern is 1 or less in 8-bit data, and a calculation in the overshoot-driving section is carried out with n-bit data.Type: GrantFiled: February 25, 2005Date of Patent: June 15, 2010Assignee: Sharp Kabushiki KaishaInventors: Tomoo Furukawa, Makoto Shiomi, Tai Shiraishi, Mitsuhiro Shigeta
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Publication number: 20090147186Abstract: A liquid crystal display of the present invention contains a first panel and a second panel being stacked. Adjacent pairs of polarizers (A to C) disposed on the panels form crossed Nicols. When the first panel produces a display according to a first display signal, the second panel produces a display according to a second display signal obtained from the first display signal. Each of the two joined panels is provided with a light diffusion layer having a light diffusing property. The provision of the light diffusion layers enables reducing moire pattern occurrences which would otherwise markedly increase when two liquid crystal panels are stacked. As a result, the liquid crystal display has high display quality.Type: ApplicationFiled: September 27, 2006Publication date: June 11, 2009Applicant: SHARP KABUSHIKI KAISHAInventors: Nobuhiko Nakai, Mitsuaki Hirata, Mitsuhiro Shigeta, Naoshi Yamada, Toshihide Tsubata, Shigeaki Mizushima, Yoshiki Takata, Masayuki Katakami, Makoto Shiomi
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Publication number: 20090122207Abstract: In the first display mode, a first tone converting circuit and a second tone converting circuit of a control LSI divide one frame period of an input image signal into a plurality of sub-frame periods to perform output to a display panel, thus realizing image display performed by time-division driving (pseudo-impulse driving). In the second display mode, the control LSI directly outputs an input image signal to the display panel, thus realizing image display performed by hold driving. In at least one embodiment, switching between the first display mode and the second display mode is performed by changing output of an output data selector according to a mode switching signal. This realizes an image display apparatus which effectively obtains the effect of suppressing blurring of a moving image and alleviates the problem of flickers caused by pseudo-impulse driving.Type: ApplicationFiled: March 15, 2006Publication date: May 14, 2009Inventors: Akihiko Inoue, Takeshi Kumakura, Mitsuhiro Shigeta, Tai Shiraishi
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Patent number: 7525559Abstract: An evaluation apparatus of a liquid crystal display device in accordance with the present invention is provided with a signal section for supplying a signal to a liquid crystal panel to be evaluated; a display detection section for sensing a display state on the liquid crystal panel; an analysis section for analyzing a detection result of the display detection section. The signal section supplies to the liquid crystal panel a signal corresponding to an original tone and then, in accordance with tone transition from the original tone to an attainment tone, either (i) an overshoot test signal or (ii) both an overshoot test signal and an undershoot test signal in test driving, while sweeping either a level of the signal (i) or levels of both the signals (ii).Type: GrantFiled: February 9, 2004Date of Patent: April 28, 2009Assignee: Sharp Kabushiki KaishaInventors: Tomoo Furukawa, Makoto Shiomi, Mitsuhiro Shigeta