Patents by Inventor Hideo Homma
Hideo Homma 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).
-
Patent number: 7837343Abstract: An illuminating device includes a light-condensing sheet, a light-emitting portion, and a control unit. The light-condensing sheet includes a plurality of lenses each with a light-condensing function ranged on a light transmittance substrate. The light-emitting portion is opposed to the light-condensing sheet and includes light-emitting areas with respective dimensions. The control unit switches a luminous state of the light-emitting area to a non-luminous state or vice versa. A display device is provided with the illuminating device described above.Type: GrantFiled: June 6, 2007Date of Patent: November 23, 2010Assignee: Hitachi, Ltd.Inventors: Toshinari Shibasaki, Hideo Homma, Katsusuke Shimazaki, Masaya Adachi, Sukekazu Aratani
-
Publication number: 20070285410Abstract: An illuminating device includes a light-condensing sheet, a light-emitting portion, and a control unit. The light-condensing sheet includes a plurality of lenses each with a light-condensing function ranged on a light transmittance substrate. The light-emitting portion is opposed to the light-condensing sheet and includes light-emitting areas with respective dimensions. The control unit switches a luminous state of the light-emitting area to a non-luminous state or vice versa. A display device is provided with the illuminating device described above.Type: ApplicationFiled: June 6, 2007Publication date: December 13, 2007Inventors: Toshinari Shibasaki, Hideo Homma, Katsusuke Shimazaki, Masaya Adachi, Sukekazu Aratani
-
Publication number: 20050218424Abstract: A semiconductor switching device for an inverter includes a first conductivity type, low impurity concentration, semiconductor substrate having a band gap equal to or greater than 2.0 eV, a first conductivity type first region formed in a first plane of the substrate having a resistance lower than the substrate, a first electrode formed in another plane of the first region, a first conductivity type second region formed in a second plane of the substrate, and a second electrode formed on the second region. A trench is formed in the second plane, a control region is formed from a bottom of the trench into the substrate and a control electrode of a different conductivity type is formed on the control region. The second electrode is formed over the control electrode through an insulator film, and the control electrode is formed on the trench sidewalls so the control region contacts the second region.Type: ApplicationFiled: May 24, 2005Publication date: October 6, 2005Inventors: Hidekatsu Onose, Hideo Homma, Atsuo Watanabe
-
Patent number: 6917054Abstract: A semiconductor device includes a trench formed on a source side of a drift region, a p-type gate region and a gate formed at the bottom of the trench, and the source formed over the entire surface of the unit device through an insulating film. The narrowest portion of a channel of the device is deeper than one-half the junction depth of the p-type gate region. This allows the width of the channel on the drain side to be reduced even when a lower energy ion implantation manufacturing process is used.Type: GrantFiled: October 9, 2003Date of Patent: July 12, 2005Assignee: Hitachi, Ltd.Inventors: Hidekatsu Onose, Hideo Homma, Atsuo Watanabe
-
Publication number: 20040135178Abstract: A semiconductor device includes a trench formed on the source side of the drift region, the p-type gate region and the gate formed at the bottom of the trench, and the source formed over the entire surface of the unit device through the insulating film. The narrowest portion of the channel is deeper than one-half the junction depth of the p-type gate region. This allows the width of the channel on the drain side to be reduced even with a lower energy.Type: ApplicationFiled: October 9, 2003Publication date: July 15, 2004Inventors: Hidekatsu Onose, Hideo Homma, Atsuo Watanabe
-
Patent number: 6570620Abstract: An exposure control device having a light measuring area setting circuit which sets a light measuring area on an image sensing plane, a discriminating circuit which discriminates from each other varied states of the image sensing plane through video signal parts corresponding to the inside and the outside of the light measuring area and an exposure compensating circuit which compensates the state of exposure to light is arranged to shift the set position of the light measuring area to trace an object's image at least when the exposure compensating circuit is in operation.Type: GrantFiled: June 6, 1995Date of Patent: May 27, 2003Assignee: Canon Kabushiki KaishaInventors: Katsuji Yoshimura, Kitahiro Kaneda, Hideo Homma, Kunihiko Yamada, Hirofumi Suda, Akihiro Fujiwara
-
Patent number: 6175384Abstract: An exposure control device includes a first exposure control circuit which is arranged to keep constant an average signal level of an image signal corresponding to the whole of an image sensing plane, and a second exposure control circuit which is arranged to compensate the average signal level according to the level of an image signal corresponding to a light measuring area set in a part of the image sensing plane. The second exposure control circuit has a response characteristic arranged to have its exposure control action performed at a slower response speed than the first exposure circuit.Type: GrantFiled: December 13, 1995Date of Patent: January 16, 2001Assignee: Canon Kabushiki KaishaInventor: Hideo Homma
-
Patent number: 6124891Abstract: An exposure control device for performing exposure control on the basis of a video signal obtained from a light measuring area set within an image sensing plane is provided with a determining circuit which determines the position of a photographed object within the image sensing plane from the values of a specific component of the video signal obtained from the inside and outside of a detection area the position of which is variably set within the image sensing plane. The light measuring area is set in the object's position within the image sensing plane detected by the determining circuit. The exposure control device is provided further with a changing circuit which detects the size of the object on the image sensing plane and changes the size of the light measuring area accordingly, and a weighting circuit which performs for light measurement a weighting operation on video signals obtained from the inside and outside of the light measuring area.Type: GrantFiled: July 21, 1994Date of Patent: September 26, 2000Assignee: Canon Kabushiki KaishaInventors: Hideo Homma, Akihiro Fujiwara, Hirofumi Suda, Kunihiko Yamada, Masamichi Toyama, Kunio Imai
-
Patent number: 5926292Abstract: An image processing apparatus has a memory device for storing pixel image data including both halftone image data such as data of image of a photograph having a gradation and line image data such as data of text containing characters. The storage is conducted on the basis of blocks each having a predetermined number of pixels. The mean information quantity of the halftone image data per pixel stored in the memory means is not greater than the information quantity of the line image data per pixel stored in the memory means. The halftone image data being compressed on the basis of the block. Therefore, both the halftone image data and line image data can be stored in a small memory by using common addresses, without causing any degradation of the image quality.Type: GrantFiled: June 26, 1997Date of Patent: July 20, 1999Assignee: Canon Kabushiki KaishaInventors: Hisashi Ishikawa, Hideo Homma, Yoshitake Nagashima, Takashi Saito
-
Patent number: 5677733Abstract: An exposure control device having a light measuring area setting circuit which sets a light measuring area on an image sensing plane, a discriminating circuit which discriminates from each other varied states of the image sensing plane through video signal parts corresponding to the inside and the outside of the light measuring area and an exposure compensating circuit which compensates the state of exposure to light is arranged to shift the set position of the light measuring area to trace an object's image at least when the exposure compensating circuit is in operation.Type: GrantFiled: February 1, 1994Date of Patent: October 14, 1997Assignee: Canon Kabushiki KaishaInventors: Katsuji Yoshimura, Kitahiro Kaneda, Hideo Homma, Kunihiko Yamada, Hirofumi Suda, Akihiro Fujiwara
-
Patent number: 5565918Abstract: An exposure control device includes an area setting circuit which sets a light measuring area on a part of an image sensing plane; a judging circuit which detects a back light image plane on the basis of a difference in level between video signals corresponding to the inside and the outside of the light measuring area; a high luminance detecting circuit which detects a high luminance part of the image sensing plane on the basis of the video signals; and a control circuit arranged to have the light measuring area set on the image sensing plane excluding the high luminance part from the light measuring area by controlling the area setting circuit on the basis of the output of the high luminance detection circuit when the image sensing plane is judged to be a back light image plane by the judging circuit.Type: GrantFiled: June 24, 1994Date of Patent: October 15, 1996Assignee: Canon Kabushiki KaishaInventors: Hideo Homma, Kitahiro Kaneda, Kunihiko Yamada
-
Patent number: 5465173Abstract: An image processing apparatus has a memory device for storing pixel image data including both halftone image data such as data of image of a photograph having a gradation and line image data such as data of text containing characters. The storage is conducted on the basis of blocks each having a predetermined number of pixels. The mean information quantity of the halftone image data per pixel stored in the memory means is not greater than the information quantity of the line image data per pixel stored in the memory means. The halftone image data being compressed on the basis of the block. Therefore, both the halftone image data and line image data can be stored in a small memory by using common addresses, without causing any degradation of the image quality.Type: GrantFiled: April 12, 1994Date of Patent: November 7, 1995Assignee: Canon Kabushiki KaishaInventors: Hisashi Ishikawa, Hideo Homma, Yoshitake Nagashima, Takashi Saito
-
Patent number: 5442397Abstract: An image sensing apparatus operating with adaptive selection of a first tracing algorithm in which an object image is traced by moving a detecting area capable of being movably set on an image sensing plane in such a manner that the luminance level difference between the inside and the outside of that area becomes maximum and a second tracing algorithm in which the object image is traced by moving the position of the detecting area in such a manner that a point at which a contrast becomes maximum comes to coincide with a central portion of the detecting are depending on the state of the image sensing plane. The threshold values for changing over between the first tracing algorithm and the second tracing algorithm are made to have a hysteresis characteristic.Type: GrantFiled: May 18, 1994Date of Patent: August 15, 1995Assignee: Canon Kabushiki KaishaInventors: Katsuji Yoshimura, Masamichi Toyama, Akihiro Fujiwara, Hirofumi Suda, Kunihiko Yamada, Kitahiro Kaneda, Hideo Homma
-
Patent number: 5339163Abstract: An exposure control device includes an area setting circuit which sets a light measuring area on a part of an image sensing plane; a judging circuit which detects a back light image plane on the basis of a difference in level between video signals corresponding to the inside and the outside of the light measuring area; a high luminance detecting circuit which detects a high luminance part of the image sensing plane on the basis of the video signals; and a control circuit arranged to have the light measuring area set on the image sensing plane excluding the high luminance part from the light measuring area by controlling the area setting circuit on the basis of the output of the high luminance detection circuit when the image sensing plane is judged to be a back light image plane by the judging circuit.Type: GrantFiled: April 9, 1992Date of Patent: August 16, 1994Assignee: Canon Kabushiki KaishaInventors: Hideo Homma, Kitahiro Kaneda, Kunihiko Yamada
-
Patent number: 5321532Abstract: An image processing apparatus has a memory device for storing pixel image data, including both halftone image data such as data of image of a photograph having a gradation, and line image text data such as data, containing characters. The storage is conducted on the basis of blocks each having a predetermined number of pixels. The mean information quantity of the halftone image data per pixel stored in the memory means is not greater than the information quantity of the line image data per pixel stored in the memory means. The halftone image data is compressed on the basis of blocks. Therefore, both the halftone image data and line image data can be stored in a small memory by using common addresses, without causing any degradation of the image quality.Type: GrantFiled: August 6, 1993Date of Patent: June 14, 1994Assignee: Canon Kabushiki KaishaInventors: Hisashi Ishikawa, Hideo Homma, Yoshitake Nagashima, Takashi Saito
-
Patent number: 5272538Abstract: An exposure control device for performing exposure control on the basis of a video signal obtained from a light measuring area set within an image sensing plane is provided with a determining circuit which determines the position of a photographed object within the image sensing plane from the values of a specific component of the video signal obtained from the inside and outside of a detection area the position of which is variably set within the image sensing plane. The light measuring area is set in the object's position within the image sensing plane detected by the determining circuit. The exposure control device is provided further with a changing circuit which detects the size of the object on the image sensing plane and changes the size of the light measuring area accordingly, and a weighting circuit which performs for light measurement a weighting operation on video signals obtained from the inside and outside of the light measuring area.Type: GrantFiled: September 13, 1990Date of Patent: December 21, 1993Assignee: Canon Kabushiki KaishaInventors: Hideo Homma, Akihiro Fujiwara, Hirofumi Suda, Kunihiko Yamada, Masamichi Toyama, Kunio Imai
-
Patent number: 5247198Abstract: A semiconductor integrated circuit device capable of having a high integration density and excellent performance and a method of fabricating the semiconductor integrated circuit device are disclosed. In this semiconductor integrated circuit device, a connecting conductor for connecting gate wiring which is formed on a field oxide film and extended from the gate of a MOSFET, to the source/drain region of another MOSFET is interposed between the gate wiring and one of two side space layers for defining the width of the gate wiring.Type: GrantFiled: September 18, 1989Date of Patent: September 21, 1993Assignee: Hitachi, Ltd.Inventors: Hideo Homma, Ryuichi Saito, Takashi Akioka, Yutaka Kobayashi
-
Patent number: 5065248Abstract: An exposure control device includes a first exposure control circuit which is arranged to keep constant an average signal level of an image signal corresponding to the whole of an image sensing plane, and a second exposure control circuit which is arranged to compensate the average signal level according to the level of an image signal corresponding to a light measuring area set in a part of the image sensing plane. The second exposure control circuit has a response characteristic arranged to have its exposure control action performed at a slower response speed than the first exposure circuit.Type: GrantFiled: February 5, 1991Date of Patent: November 12, 1991Assignee: Canon Kabushiki KaishaInventor: Hideo Homma
-
Patent number: 4987482Abstract: An image pickup apparatus for outputting an image pickup signal by forming an image of a subject on an image pickup element through an optical system includes a determining circuit for picking up a plurality of color information signals from the image pickup element, comparing the color information signals with a predetermined reference value to determine that the color information signals reach a predetermined level and detecting quantity of a skin color signal component; and a control circuit for controlling the exposure of the image pickup element in accordance with the result of the determination.Type: GrantFiled: October 24, 1988Date of Patent: January 22, 1991Assignee: Canon Kabushiki KaishaInventors: Kunio Imai, Hideo Homma, Teruo Hieda
-
Patent number: 4858020Abstract: An image sensing device allowing normal or teleconversion operation has an image sensor which includes a plurality of horizontal lines and is capable of being non-destructively read out. Area setting ciruitry is included for variably setting a reading area of the image sensor. Clock control circuitry includes a plurality of reading lines and is arranged to read out image information from the selected reading area. Reading circuitry non-destructively reads out, a plurality of times for the tele-conversion operation, the signals from the set reading area. The reading cycle corresponds to the size of the set reading area. Clearing circuitry is also included for clearing altogether the areas of the image sensor other than the set reading area.Type: GrantFiled: January 26, 1988Date of Patent: August 15, 1989Assignee: Canon Kabushiki KaishaInventor: Hideo Homma