Patents by Inventor Tetsuro Kumesawa
Tetsuro Kumesawa 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: 8426896Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device of the present invention includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: GrantFiled: June 28, 2011Date of Patent: April 23, 2013Assignee: Sony CorporationInventor: Tetsuro Kumesawa
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Patent number: 8115236Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: GrantFiled: March 17, 2011Date of Patent: February 14, 2012Assignee: Sony CorporationInventor: Tetsuro Kumesawa
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Publication number: 20110253882Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device of the present invention includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: ApplicationFiled: June 28, 2011Publication date: October 20, 2011Applicant: SONY CORPORATIONInventor: Tetsuro Kumesawa
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Patent number: 7977710Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device of the present invention includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: GrantFiled: March 12, 2010Date of Patent: July 12, 2011Assignee: Sony CorporationInventor: Tetsuro Kumesawa
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Publication number: 20110163361Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: ApplicationFiled: March 17, 2011Publication date: July 7, 2011Applicant: SONY CORPORATIONInventor: Tetsuro Kumesawa
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Publication number: 20100165159Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device of the present invention includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: ApplicationFiled: March 12, 2010Publication date: July 1, 2010Applicant: SONY CORPORATIONInventor: Tetsuro Kumesawa
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Patent number: 7709863Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device of the present invention includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: GrantFiled: October 4, 2005Date of Patent: May 4, 2010Assignee: Sony CorporationInventor: Tetsuro Kumesawa
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Publication number: 20060022223Abstract: A solid state imaging device in which ? characteristic is obtained and enlargement of dynamic range is provided. The solid state imaging device of the present invention includes a vertical overflow function and has a feature in which potential of a semiconductor substrate is changed from a high potential to a low potential in a stepwise manner during a period from an exposure start to an exposure end.Type: ApplicationFiled: October 4, 2005Publication date: February 2, 2006Inventor: Tetsuro Kumesawa
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Patent number: 5892251Abstract: A charge transferring apparatus comprising, e.g., a buried type charge coupled device in which a pair of transfer electrodes located at the most downstream point of a charge transfer direction is driven by a drive pulse other than that for any other pair of transfer electrodes and a potential well formed at the pair of the transfer electrodes located at the most downstream point is made shallower than that at any other pair of transfer electrodes allowing the output dynamic range of a charge transfer device to be increased for improving the output quality.Type: GrantFiled: July 15, 1997Date of Patent: April 6, 1999Assignee: Sony CorporationInventors: Tetsuro Kumesawa, Hiromichi Matsui
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Patent number: 5796432Abstract: A solid state imaging device and method of operating the same includes an imaging section for converting incident light into a signal charge which is temporarily stored in a storage section before being read out. A vertical transfer register extends from an imaging section to a storage section. A transfer clock pulse is applied to a portion of the vertical transfer register disposed in the storage section such that the potential of the vertical transfer register in the storage section is deeper than that in the imaging section. Excess charge is transferred to a smear drain section. According to an alternate feature, the potential of the vertical transfer register within either the imaging section or the storage section is maintained constant. A further feature makes use of two drain regions disposed at respective distal ends of the imaging section and the storage section.Type: GrantFiled: January 23, 1996Date of Patent: August 18, 1998Assignee: Sony CorporationInventors: Mamoru Iesaka, Tetsuro Kumesawa
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Patent number: 5495289Abstract: An FIT solid state image sensor including an image section having an array of photosensitive elements, a storage section for temporarily storing signal charges transferred thereto from the image section, a plurality of vertical shift registers provided for respective vertical lines of the array, and a horizontal shift register for horizontally transferring the signal charges transferred vertically through the vertical shift registers. Clock pulses are applied to the vertical transfer registers during a line shift transfer period of transferring the signal charges from the storage section to the horizontal shift register. The voltage levels of the clock pulses are set to provide the same potential between the photosensitive elements arranged in odd horizontal lines of the array and the photosensitive elements arranged in even horizontal line of the array.Type: GrantFiled: January 5, 1995Date of Patent: February 27, 1996Assignee: Sony CorporationInventor: Tetsuro Kumesawa
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Patent number: 5289022Abstract: A CCD shift register which is improved in the transfer efficiency with a minimal decrease in the amount of electric charge that can be handled. The CCD shift register has an array of transfer electrodes, each comprising a pair of storage and transfer gate electrodes, which are formed on a semiconductor substrate through a gate insulator. A semiconductor region under each storage gate electrode is divided into a plurality of subregions by using impurities.Type: GrantFiled: May 13, 1992Date of Patent: February 22, 1994Assignee: Sony CorporationInventors: Tetsuya Iizuka, Naoki Nishi, Tetsuro Kumesawa
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Patent number: 5014132Abstract: A CCD imager includes a large number of light receiving sections each having in turn a semiconductor surface region of a second conductivity type, a first semiconductor region of a first conductivity type, a semiconductor region of the second conductivity type and a second semiconductor region of the first conductivity type, vertically. The second semiconductor region is formed by a dual structure of the low concentration semiconductor region and the high concentration semiconductor region. The dual structure provides for shuttering at a lower voltage since the potential barrier along the depth of the light receiving section is no longer affected by the amount of the stored charges, while spreading of the depletion layer at the junction is suppressed by the high concentration semiconductor region.Type: GrantFiled: July 21, 1989Date of Patent: May 7, 1991Assignee: Sony CorporationInventors: Tetsuro Kumesawa, Yasuo Kanou, Osamu Nishima, Masaaki Isobe, Hiromichi Matsui
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Patent number: 4794279Abstract: A solid state imager device having a substrate of a first conductivity type, a charge storage area of a second conductivity type formed on the substrate of the first conductivity type, and a forward electrode formed on the charge storage area of the second conductivity type through an insulating layer, and the forward electrode is alternately supplied with a first voltage for accumulating charges of the first conductivity type on a boundary between the charge storage area of the second conductivity type and the insulating layer and a second voltage so as to extend the depletion layer formed beneath the charge storage area of the second conductivity type.Type: GrantFiled: May 18, 1987Date of Patent: December 27, 1988Assignee: Sony CorporationInventors: Michio Yamamura, Hiroshi Terakawa, Tetsuro Kumesawa, Takashi Fukusyo