Patents by Inventor Kazuhiro KUMAZAWA

Kazuhiro KUMAZAWA 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).

  • Controlling communications in a camera system including a camera body and an interchangeable lens
    Patent number: 9544483
    Abstract: In a camera system, a lens CPU controls the operation of an interchangeable lens at a control instruction from a camera body. In the camera body, a subject formed on an imaging element by using the interchangeable lens is photographed at a specified frame rate and image data is generated. A camera body communication circuit transmits a timing signal in accordance with the frame rate to the lens CPU through a main body CPU. The main body CPU acquires lens characteristic data stored in non-volatile memory by a communication with the lens CPU, determines the transmission period of the timing signal according to the acquired lens characteristic data, and controls the camera body communication circuit on the basis of the determined transmission period.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: January 10, 2017
    Assignee: Olympus Corporation
    Inventors: Koichi Nakata, Kazuhiro Kumazawa
  • CAMERA SYSTEM
    Publication number: 20150281534
    Abstract: In a camera system, a lens CPU controls the operation of an interchangeable lens at a control instruction from a camera body. In the camera body, a subject formed on an imaging element by using the interchangeable lens is photographed at a specified frame rate and image data is generated. A camera body communication circuit transmits a timing signal in accordance with the frame rate to the lens CPU through a main body CPU. The main body CPU acquires lens characteristic data stored in non-volatile memory by a communication with the lens CPU, determines the transmission period of the timing signal according to the acquired lens characteristic data, and controls the camera body communication circuit on the basis of the determined transmission period.
    Type: Application
    Filed: March 10, 2015
    Publication date: October 1, 2015
    Inventors: Koichi NAKATA, Kazuhiro KUMAZAWA