Patents by Inventor Shinji Sakaguchi

Shinji Sakaguchi 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: 11792539
    Abstract: A solid-state imaging element includes a pixel section including a plurality of pixels that are arranged in a matrix and to perform photoelectric conversion, and circuitry to perform reading control on pixels in the pixel section, such that reading control is not performed on at least one pixel included in the pixel section.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: October 17, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shinji Sakaguchi, Masamoto Nakazawa
  • Publication number: 20230297796
    Abstract: An image reading apparatus includes a first light source, a second light source, a visible imaging sensor, an invisible imaging sensor, and a reduction unit. The first light source irradiates an object with visible light. The second light source irradiates the object with invisible light. The visible imaging sensor reads a visible image of the object. The invisible imaging sensor reads an invisible image of the object. The reduction unit reduces a visible wavelength component of light received by the invisible imaging sensor.
    Type: Application
    Filed: March 9, 2023
    Publication date: September 21, 2023
    Inventors: Hirofumi ONO, Shinji SAKAGUCHI, Ayumu HASHIMOTO
  • Publication number: 20220407983
    Abstract: A gain modification device (20) includes a plurality of gain modification units (31) whose number of units corresponds to a number of kinds of a plurality of signals input to the plurality of gain modification units, each one of the plurality of gain modification units (31) being configured to modify a gain value used to amplify the plurality of signals, and a plurality of gain reflection control units (44) configured to change a timing at which the gain value is to be switched by the plurality of gain modification units (31) such that the gain value of one of the plurality of signals affecting a signal level of another one of the plurality of signals is switched at a timing different from a timing at which the gain value of the another one of the plurality of signals is switched.
    Type: Application
    Filed: December 4, 2020
    Publication date: December 22, 2022
    Inventors: Hiroki SHIRADO, Masamoto NAKAZAWA, Shinji SAKAGUCHI
  • Publication number: 20220279079
    Abstract: A signal processing device includes a data writing unit, a channel number converting unit, and a plurality of serial data transferring unit. The data writing unit is configured to write data of m channels into a memory. The channel number converting unit is configured to output the data read from the memory as data of n channels, where m is larger than n. The plurality of serial data transferring unit is configured to transfer the data of the n channels to a processing device in a subsequent stage.
    Type: Application
    Filed: May 20, 2022
    Publication date: September 1, 2022
    Inventors: Shinji SAKAGUCHI, Tohru KANNO, Masamoto NAKAZAWA
  • Publication number: 20210409622
    Abstract: A solid-state imaging element includes a pixel section including a plurality of pixels that are arranged in a matrix and to perform photoelectric conversion, and circuitry to perform reading control on pixels in the pixel section, such that reading control is not performed on at least one pixel included in the pixel section.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 30, 2021
    Inventors: Shinji SAKAGUCHI, Masamoto NAKAZAWA
  • Patent number: 11009905
    Abstract: A semiconductor integrated circuit includes a plurality of processing circuits including a sample and hold circuit, and a timing signal generation circuit that receives a reference clock signal and generates a timing signal to control a timing to operate the sample and hold circuit based on the reference clock signal. The plurality of processing circuits serially execute processing in order from the processing circuit at a preceding stage to the processing circuit at a subsequent stage. The timing signal generation circuit is coupled to the plurality of processing circuits so as to supply the timing signal to each of the plurality of processing circuits in order from the processing circuit at the subsequent stage to the processing circuit at the preceding stage.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: May 18, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Isamu Miyanishi, Yuuya Miyoshi, Tohru Kanno, Shinji Sakaguchi
  • Publication number: 20190272003
    Abstract: A semiconductor integrated circuit includes a plurality of processing circuits including a sample and hold circuit, and a timing signal generation circuit that receives a reference clock signal and generates a timing signal to control a timing to operate the sample and hold circuit based on the reference clock signal. The plurality of processing circuits serially execute processing in order from the processing circuit at a preceding stage to the processing circuit at a subsequent stage. The timing signal generation circuit is coupled to the plurality of processing circuits so as to supply the timing signal to each of the plurality of processing circuits in order from the processing circuit at the subsequent stage to the processing circuit at the preceding stage.
    Type: Application
    Filed: February 5, 2019
    Publication date: September 5, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Isamu Miyanishi, Yuuya Miyoshi, Tohru Kanno, Shinji Sakaguchi
  • Patent number: 10250830
    Abstract: A solid-state imaging device includes: a valid area including pixels that are not shielded from light; a first light-blocked area and a second light-blocked area each including pixels that are shielded from light; an analog-to-digital converting unit to convert the electric charge accumulated by the pixels belonging to the first light-blocked area, the valid area, and the second light-blocked area, to image data at a time; a signal reading unit to read light-blocked data obtained from the first light-blocked area and the second light-blocked area, and valid data obtained from the valid area, in units of pixels; a reference black level estimating unit to estimate a reference black level of the light-blocked data; and a level correction unit to correct, based on the estimated reference black level, a size of the valid data obtained simultaneously with the light-blocked data used in estimating the reference black level.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: April 2, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinji Sakaguchi, Tohru Kanno
  • Patent number: 10217788
    Abstract: An imaging device includes a plurality of arranged imaging elements each including: a light-receiving element configured to generate charge from received light by photoelectric conversion, a floating diffusion configured to convert the charge generated by the light-receiving element into voltage, a charge transfer switch configured to transfer the charge from the light-receiving element to the floating diffusion, a reset switch configured to reset the voltage of the floating diffusion, and a source follower configured to amplify the voltage of the floating diffusion. The reset switch is configured to reset the voltage of the floating diffusion a plurality of times for each of predetermined pixel groups in a single image data acquisition period. The charge transfer switch is configured to transfer the charge from the light-receiving element to the floating diffusion a plurality of times for each of the pixel groups in the single image data acquisition period.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 26, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinji Sakaguchi, Tohru Kanno
  • Publication number: 20170272671
    Abstract: A solid-state imaging device includes: a valid area including pixels that are not shielded from light; a first light-blocked area and a second light-blocked area each including pixels that are shielded from light; an analog-to-digital converting unit to convert the electric charge accumulated by the pixels belonging to the first light-blocked area, the valid area, and the second light-blocked area, to image data at a time; a signal reading unit to read light-blocked data obtained from the first light-blocked area and the second light-blocked area, and valid data obtained from the valid area, in units of pixels; a reference black level estimating unit to estimate a reference black level of the light-blocked data; and a level correction unit to correct, based on the estimated reference black level, a size of the valid data obtained simultaneously with the light-blocked data used in estimating the reference black level.
    Type: Application
    Filed: March 2, 2017
    Publication date: September 21, 2017
    Inventors: Shinji SAKAGUCHI, Tohru Kanno
  • Publication number: 20170256580
    Abstract: An imaging device includes a plurality of arranged imaging elements each including: a light-receiving element configured to generate charge from received light by photoelectric conversion, a floating diffusion configured to convert the charge generated by the light-receiving element into voltage, a charge transfer switch configured to transfer the charge from the light-receiving element to the floating diffusion, a reset switch configured to reset the voltage of the floating diffusion, and a source follower configured to amplify the voltage of the floating diffusion. The reset switch is configured to reset the voltage of the floating diffusion a plurality of times for each of predetermined pixel groups in a single image data acquisition period. The charge transfer switch is configured to transfer the charge from the light-receiving element to the floating diffusion a plurality of times for each of the pixel groups in the single image data acquisition period.
    Type: Application
    Filed: February 21, 2017
    Publication date: September 7, 2017
    Inventors: Shinji SAKAGUCHI, Tohru KANNO
  • Patent number: 8135872
    Abstract: A USB controller and a testing method of the USB controller are disclosed. The USB controller includes a sequence control unit for outputting a transmitting enable signal and a receiving enable signal, and for controlling a sequence of transmission and reception of data based on the transmitting enable signal and the receiving enable signal; a driver unit for transmitting data; a receiver unit for receiving data; a register for setting up a test mode wherein a loop-back test of the USB controller is performed; and a switching unit for providing one of the transmitting enable signal to the receiver unit and the receiving enable signal to the driver unit, if the test mode is set up in the register; wherein the loop-back test is performed if the test mode is set up in the register.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: March 13, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Shinji Sakaguchi
  • Publication number: 20080235405
    Abstract: A USB controller and a testing method of the USB controller are disclosed. The USB controller includes a sequence control unit for outputting a transmitting enable signal and a receiving enable signal, and for controlling a sequence of transmission and reception of data based on the transmitting enable signal and the receiving enable signal; a driver unit for transmitting data; a receiver unit for receiving data; a register for setting up a test mode wherein a loop-back test of the USB controller is performed; and a switching unit for providing one of the transmitting enable signal to the receiver unit and the receiving enable signal to the driver unit, if the test mode is set up in the register; wherein the loop-back test is performed if the test mode is set up in the register.
    Type: Application
    Filed: February 13, 2008
    Publication date: September 25, 2008
    Inventor: Shinji Sakaguchi
  • Patent number: 6649106
    Abstract: A method for debindering of powder molded body, including dipping, in an extracting solution an aqueous surfactant solution, a ceramic powder or metal powder molded body containing a binder with at least two kinds of binder components, to selectively extract and remove at least one kind of binder component from the molded body, and then removing the binder components remaining in the molded body after extraction. This debindering method permits rapid debindering while preventing the generation of defects such as cracks and the like, is highly safe to human health and environment, and requires a low facility cost.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: November 18, 2003
    Assignee: NGK Insulators, Ltd.
    Inventors: Shinji Sakaguchi, Shigeki Kato, Takayuki Kawae
  • Patent number: 6497996
    Abstract: As shown in FIG. 1A, a first resist film 2 comprising organic high molecules and a second resist film 3 comprising a photosensitive material are sequentially applied to a substrate 1 by the spin coat method or the spray method for forming a two-layer resist. Then, a mask 4 with which a metallic fine opening pattern 6 is formed on a mask substrate 5 comprising a dielectric, such as glass, is tightly contacted with the two-layer resist. Then, light is projected onto the back of the mask substrate to carry out exposure with near field light 7 which is effused from the opening portions of the mask 4 where no metal is formed. Then, a pattern is formed by processing the second resist layer 3 for development with a developing solution.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: December 24, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masayuki Naya, Shinji Sakaguchi
  • Publication number: 20020182098
    Abstract: There is provided a method for debindering of powder molded body, which comprises dipping, in an extracting solution composed of an aqueous surfactant solution, a ceramic powder or metal powder molded body containing a binder comprising at least two kinds of binder components, to selectively extract and remove at least one kind of binder component from the molded body, and then removing the binder components remaining in the molded body after extraction. This debindering method enables a short time and rapid debindering treatment while preventing the generation of defects such as cracks and the like, has high safety to human health and environment, and requires a low facility cost.
    Type: Application
    Filed: March 7, 2002
    Publication date: December 5, 2002
    Inventors: Shinji Sakaguchi, Shigeki Kato, Takayuki Kawae
  • Publication number: 20010033038
    Abstract: There is provided a method of producing a metal/ceramic composite, comprising the steps of adding starch to a ceramic slurry; casting the slurry into a water-nonabsorptive mold; heating the slurry to harden it to obtain a hardened body; demolding the hardened body out of the mold; and drying the hardened body to obtain a molded body; and then impregnating pores of the molded body or pores of a porous ceramic body produced by firing the molded body with a metal. The method can produce a metal/ceramic composite having a narrow metal distribution at a low cost, while freely controlling metal content as designed for complex shapes, or products with varying thickness or highly thick products, to say nothing of simple shapes.
    Type: Application
    Filed: March 16, 2001
    Publication date: October 25, 2001
    Applicant: NGK Insulators, Ltd.
    Inventors: Shinji Sakaguchi, Shinzo Hayashi, Takayuki Kawae
  • Patent number: 5750310
    Abstract: There are provided a positive photoresist composition comprising an alkali-soluble resin and a 1,2-naphthoquinonediazide-5-(and/or-4-) sulfonic ester of a tetrahydroxy compound having a specific structure, said ester component having a pattern area in the high-performance liquid chromatography determined using ultraviolet rays of 254 nm accounting for 50% or more of the entire pattern area and a positive photoresist composition comprising an alkali-soluble resin and 1,2-naphthoquinonediazide-5-(and/or -4-)sulfonic esters of two kinds of specific polyhydroxy compounds. The positive photoresist is suitable for ultrafine working and ensures high sensitivity and high resolution and is improved with respect to film thickness dependency and standing wave.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: May 12, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenichiro Sato, Shinji Sakaguchi, Makoto Momota
  • Patent number: 5747218
    Abstract: A positive photoresist composition for ultrafine working ensuring high sensitivity, high resolution, improved film thickness dependency and improved exposure margin, which comprises an alkali-soluble resin and a 1,2-naphthoquinonediazide-5-(and/or -4-)sulfonic ester of a polyhydroxy compound of formula (I), the tetraester component thereof accounting for 50% or more of the entire pattern area determined by high-performance liquid chromatography using ultraviolet rays of 254 nm: ##STR1## wherein X represents ##STR2## and the substituents other than X are as defined in the specification.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: May 5, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Momota, Kenichiro Sato, Shinji Sakaguchi
  • Patent number: 5700620
    Abstract: Disclosed is a radiation ray sensitive resin composition comprising a water-insoluble, alkali-soluble resin, a water-insoluble, alkali-soluble low-molecular compound and a radiation ray sensitive component, in which said radiation ray sensitive component contains a mixture composed of (A) a napthoquinonediazide sulfonic acid diester of water-insoluble, alkali-soluble low-molecular compounds having three and/or four phenolic hydroxyl groups and (B) a napthoquinonediazide sulfonic acid ester of a water-insoluble, alkali-soluble low-molecular compound having from 5 to 7 phenolic hydroxyl groups, in an amount of 30% or more of said radiation ray sensitive component. The composition is a positive type photoresist having a high resolution and small film thickness dependence. This has a broad latitude for development and leaves a small resist residue after development. This has high heat resistance and is therefore highly resistant to dry etching.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 23, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Sakaguchi, Toshiaki Aoai, Kenichiro Sato