Patents by Inventor Masahisa Tamura

Masahisa Tamura 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: 11550207
    Abstract: An image capturing apparatus includes a first mount portion and a first cylindrical member that has a color different from a color of the first mount portion and is disposed in a circumferential direction of the first mount portion, an accessory includes an exterior portion, a second mount portion, and a second cylindrical member having a color different from a color of the second mount portion and similar to a color of the first cylindrical member and disposed in a circumferential direction of the second mount portion, and in a state where the accessory is attached to the image capturing apparatus, reference surfaces of the first mount portion and the second mount portion are in contact with each other, and the first cylindrical member and the second cylindrical member are externally exposed regardless of whether the accessory is attached to or detached from the image capturing apparatus.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: January 10, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Haruhisa Ueda, Kazuaki Yamana, Haruki Ota, Seishiro Takano, Masahisa Tamura, Kunihiko Sasaki, Katsuhiro Inoue, Toru Matsumoto, Shigehiro Torii, Toshinori Yamazaki
  • Patent number: 11537028
    Abstract: An interchangeable lens assembly includes a plurality of lens-side claw portions configured to be engaged with a plurality of camera-side claw portions, and a lock pin groove portion into which a lock pin is inserted, a lens barrel, and a lens mount fixing member. When ?1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of the lock pin groove portion and the optical axis, and ?2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin groove portion and the optical axis, ?1 and ?2 satisfy a predetermined conditional expression.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: December 27, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Sasaki, Masahisa Tamura, Toshinori Yamazaki, Masayasu Shigematsu
  • Patent number: 11500270
    Abstract: An accessory attachable to and detachable from an image pickup apparatus includes a second mount portion including a plurality of second bayonet claw portions capable of engaging with a plurality of first bayonet claw portions, a plurality of second terminals capable of contacting with a plurality of first terminals, an accessory body, and a mount fixing member for fixing the second mount portion to the accessory body. The plurality of second terminals is provided at positions different from positions of the plurality of second bayonet claw portions, and all of multiple second terminals, among the plurality of second terminals, used in communication between the image pickup apparatus and the accessory are provided at predetermined positions.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: November 15, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Kunihiko Sasaki, Toshinori Yamazaki, Masayasu Shigematsu
  • Patent number: 11394527
    Abstract: A blockchain method generates data on a new blockchain by linking a new block to data on a blockchain including a plurality of blocks linked together each being a set of data containing given information. The blockchain method may further includes: in generating a second block following a first block included in the data on the blockchain, identifying, among branch blocks approved prior to the generating of the second block, one or more blocks capable of being approved in parallel with the first block, and generating and registering, in a memory, the second block following the first block and the one or more blocks capable of being approved in parallel with the first block.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: July 19, 2022
    Assignee: FUJITSU LIMITED
    Inventors: Takeshi Miyamae, Masahisa Tamura
  • Patent number: 11303905
    Abstract: An information processing system includes one or more processors configured to acquire a plurality of pieces of divided data generated by dividing the data, determine, in accordance with offset information, a first position of a first key point closest to a head position of each of the plurality of pieces of divided data, and a second position of a second key point closest to an end position of each of the plurality of pieces of divided data, generate first difference information indicating first data between the head position and the first position, and second difference information indicating second data between the end position and the second position, generate metadata to be used for decoding partial data, distribute the plurality of pieces of divided data to a plurality of nodes respectively together with the first difference information, the second difference information, and the metadata.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 12, 2022
    Assignee: FUJITSU LIMITED
    Inventors: Satoshi Iwata, Masahisa Tamura
  • Publication number: 20210373418
    Abstract: An accessory configured to be detachably mountable to an image pickup apparatus including a first mount portion including first bayonet claw portions, and first terminals, the accessory including a second mount portion including second bayonet claw portions configured to enable engagement with the first bayonet claw portions, and second terminals configured to enable contact with the first terminals, in which the second terminals are provided at positions that are different from positions of the second bayonet claw portions, and wherein, a half line that extends from a central axis of the second mount portion and passes through a second terminal that determines whether an optical apparatus is mounted on the image pickup apparatus or not, passes through a predetermined second bayonet claw portion.
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Inventors: Masahisa Tamura, Kunihiko Sasaki, Toshinori Yamazaki, Masayasu Shigematsu
  • Publication number: 20210373281
    Abstract: An interchangeable lens assembly includes a plurality of lens-side claw portions configured to enable engagement with a plurality of camera-side claw portions, and a lock pin concave portion in which a lock pin is inserted. Furthermore, ?1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of a lock pin concave portion and the optical axis, and ?2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin concave portion and the optical axis. In the above, ?1 and ?2 satisfy a predetermined conditional expression.
    Type: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Inventors: Kunihiko Sasaki, Toshinori Yamazaki, Masahisa Tamura, Masayasu Shigematsu
  • Patent number: 11143939
    Abstract: An accessory configured to be detachably mountable to an image pickup apparatus including a first mount portion including first bayonet claw portions, and first terminals, the accessory including a second mount portion including second bayonet claw portions configured to enable engagement with the first bayonet claw portions, and second terminals configured to enable contact with the first terminals, in which the second terminals are provided at positions that are different from positions of the second bayonet claw portions, and wherein, a half line that extends from a central axis of the second mount portion and passes through a second terminal that determines whether an optical apparatus is mounted on the image pickup apparatus or not, passes through a predetermined second bayonet claw portion.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: October 12, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Kunihiko Sasaki, Toshinori Yamazaki, Masayasu Shigematsu
  • Patent number: 11143841
    Abstract: An interchangeable lens assembly includes a plurality of lens-side claw portions configured to enable engagement with a plurality of camera-side claw portions, and a lock pin concave portion in which a lock pin is inserted. Furthermore, ?1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of a lock pin concave portion and the optical axis, and ?2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin concave portion and the optical axis. In the above, ?1 and ?2 satisfy a predetermined conditional expression.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: October 12, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunihiko Sasaki, Toshinori Yamazaki, Masahisa Tamura, Masayasu Shigematsu
  • Patent number: 11126067
    Abstract: An accessory configured to be detachably mountable to an image pickup apparatus including a first mount portion including first bayonet claw portions and first terminals, the accessory including a second mount portion including second bayonet claw portions configured to enable engagement with the first bayonet claw portions, and second terminals configured to enable contact with the first terminals, in which the second terminals are provided at positions that are different from positions of the second bayonet claw portions, and wherein half lines that extends from a central axis of the second mount portion and passes through second terminals that are used in communication between the image pickup apparatus and the accessory, all pass through a predetermined second bayonet claw portion.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 21, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Kunihiko Sasaki, Toshinori Yamazaki, Masayasu Shigematsu
  • Publication number: 20210200066
    Abstract: An interchangeable lens assembly includes a plurality of lens-side claw portions configured to be engaged with a plurality of camera-side claw portions, and a lock pin groove portion into which a lock pin is inserted, a lens barrel, and a lens mount fixing member. When ?1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of the lock pin groove portion and the optical axis, and ?2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin groove portion and the optical axis, ?1 and ?2 satisfy a predetermined conditional expression.
    Type: Application
    Filed: February 23, 2021
    Publication date: July 1, 2021
    Inventors: Kunihiko Sasaki, Masahisa Tamura, Toshinori Yamazaki, Masayasu Shigematsu
  • Publication number: 20210181603
    Abstract: An accessory attachable to and detachable from an image pickup apparatus includes a second mount portion including a plurality of second bayonet claw portions capable of engaging with a plurality of first bayonet claw portions, a plurality of second terminals capable of contacting with a plurality of first terminals, an accessory body, and a mount fixing member for fixing the second mount portion to the accessory body. The plurality of second terminals is provided at positions different from positions of the plurality of second bayonet claw portions, and all of multiple second terminals, among the plurality of second terminals, used in communication between the image pickup apparatus and the accessory are provided at predetermined positions.
    Type: Application
    Filed: March 1, 2021
    Publication date: June 17, 2021
    Inventors: Masahisa Tamura, Kunihiko Sasaki, Toshinori Yamazaki, Masayasu Shigematsu
  • Publication number: 20210157091
    Abstract: Interchangeable lenses 100A, B, C, and D include a focusing lens unit FLU that is to be moved in an optical axis direction to focus, a focus operation ring 103 that moves the focusing lens unit FLU in the optical axis direction, and a custom operation ring 104 that realizes one of a function among a first function and a second function different from the focusing, and a surface of the focus operation ring 103 has a first structure and a surface of the custom operation ring 104 has a second structure different from the first structure.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Inventors: Toshinori Yamazaki, Masahisa Tamura, Takehiko Sato, Katsuhiro Inoue, Daisuke Nakashita, Mitsuhiro Izumi, Seishiro Takano
  • Patent number: D958224
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: July 19, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto, Kazuaki Yamana, Masayasu Shigematsu
  • Patent number: D958225
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: July 19, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto, Kazuaki Yamana, Masayasu Shigematsu
  • Patent number: D958226
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: July 19, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto, Kazuaki Yamana, Masayasu Shigematsu
  • Patent number: D958227
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: July 19, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto, Kazuaki Yamana, Masayasu Shigematsu
  • Patent number: D958869
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: July 26, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto, Kazuaki Yamana, Masayasu Shigematsu
  • Patent number: D960962
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: August 16, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto
  • Patent number: D963732
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: September 13, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahisa Tamura, Katsuhiro Inoue, Kunihiko Sasaki, Shigehiro Torii, Toshinori Yamazaki, Toru Matsumoto, Kazuaki Yamana, Masayasu Shigematsu