Patents by Inventor Hiroichi Sokei

Hiroichi Sokei 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).

  • Semiconductor device and video camera unit having the same and method for manufacturing the same
    Patent number: 5673083
    Abstract: A video camera unit is separated into a holder for receiving lenses and a base on which a solid-state image pickup chip is mounted. The holder and the base are assembled together with the distance between them made variable so that it is possible to adjust the back focus of the lens. Further, a video camera unit has a holder which is separated into a first holder for receiving lenses and a second holder for receiving a solid-state image pickup device so that both holders can be assembled together with the distance between them made variable. Therefore, it is also possible to adjust the back focus of the lens.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: September 30, 1997
    Assignees: Hitachi, Ltd., Echo Co., Ltd.
    Inventors: Akiya Izumi, Iwao Takemoto, Hiroichi Sokei, Masahiko Kadowaki, Takamasa Naito, Hiroyoshi Kojima, Atsumu Iguchi, Masaaki Yokoyama, Junichirou Nakajima, Masayuki Takahashi, Kunio Niwa
  • Video camera unit having an airtight mounting arrangement for an image sensor chip
    Patent number: 5400072
    Abstract: A video camera unit is separated into a holder for receiving lenses and a base on which a solid-state image pickup chip is mounted. The holder and the base are assembled together with the distance between them made variable so that it is possible to adjust the back focus of the lens. Further, a video camera unit has a holder which is separated into a first holder for receiving lenses and a second holder for receiving a solid-state image pickup device so that both holders can be assembled together with the distance between them made variable. Therefore, it is also possible to adjust the back focus of the lens.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: March 21, 1995
    Assignees: Hitachi, Ltd., Echo Co., Ltd.
    Inventors: Akiya Izumi, Iwao Takemoto, Hiroichi Sokei, Masahiko Kodowaki, Takamasa Naito, Hiroyoshi Kojima, Atsumu Iguchi, Masaaki Yokoyama, Junichirou Nakajima, Masayuki Takahashi, Kunio Niwa
  • Semiconductor device and video camera unit using it and their manufacturing method
    Patent number: 5274456
    Abstract: An imaging assembly, which is particularly useful for a video camera unit, comprising a set of lenses, some of which have a non-refractive surface, and an image sensor. A holder is provided for holding both the set of lenses and the image sensor to be aligned with one another. Circuitry is also provided so that the sensitivity of the image sensor can be electrically varied.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: December 28, 1993
    Assignees: Hitachi, Ltd., Echo Co. Ltd.
    Inventors: Akiya Izumi, Iwao Takemoto, Hiroichi Sokei, Masahiko Kadowaki, Atsumu Iguchi, Junichiro Nakajima, Masayuki Takahashi, Kunio Niwa
  • Solid-state imaging system with an electronic auto-stop (iris) responsive to an output potential of imaging signal
    Patent number: 4866292
    Abstract: Disclosed is a solid state imaging system with a variable sensitivity function in which the sensitivity of the image sensor device is varied in response to the output level of the device.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: September 12, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Iwao Takemoto, Tetsurou Izawa, Hiroichi Sokei, Toshiki Suzuki
  • Color television camera
    Patent number: 4562459
    Abstract: In an NTSC system color television camera with a shading correction circuit, the correction circuit comprises differential amplifier means for comparing a level difference between Y and R signals and between Y and B signals to produce analog difference signals, analog-to-digital converter means for converting levels resulting from sampling the analog signals by clock pulses into digital signals, a random access memory for storing and reading the digital signals, and shading amplifier means responsive to the read-out signals to perform such an amplification that the chrominance signal level is made equal to the luminance signal level.
    Type: Grant
    Filed: June 21, 1983
    Date of Patent: December 31, 1985
    Assignee: Hitachi, Ltd.
    Inventor: Hiroichi Sokei