Invention Grant
US07733410B2 Electronic camera and focus control method which minimizes the time required for adjusting a focus 失效
电子照相机和聚焦控制方法,可最大限度地减少调整焦点所需的时间

  • Patent Title: Electronic camera and focus control method which minimizes the time required for adjusting a focus
  • Patent Title (中): 电子照相机和聚焦控制方法,可最大限度地减少调整焦点所需的时间
  • Application No.: US10333701
    Application Date: 2001-07-26
  • Publication No.: US07733410B2
    Publication Date: 2010-06-08
  • Inventor: Kenichi KikuchiKazuhiko Sugimoto
  • Applicant: Kenichi KikuchiKazuhiko Sugimoto
  • Applicant Address: JP Osaka
  • Assignee: Sanyo Electric Co., Ltd.
  • Current Assignee: Sanyo Electric Co., Ltd.
  • Current Assignee Address: JP Osaka
  • Agent Gerald T. Bodner
  • Priority: JP2000-232196 20000731
  • International Application: PCT/JP01/06469 WO 20010726
  • International Announcement: WO02/10825 WO 20020207
  • Main IPC: G03B13/00
  • IPC: G03B13/00
Electronic camera and focus control method which minimizes the time required for adjusting a focus
Abstract:
An electronic camera includes a shutter button. When the shutter button is half-depressed, a focal level of an object is determined on the basis of an image signal outputted from an imaging device, and a moving start position of a focus lens is settled on the basis of the determination result. More specifically, a correction amount of the moving start position is settled in accordance with the determination result of the focal level, and a position that subtracts the correction amount from a lens position at a time the shutter button being half-depressed is settled as the moving start position. The higher the focal level, the more reduced the correction amount. The focus lens gradually moves toward the imaging device from the settled moving start position, and a focal position is specified on the basis of the image signal outputted from the imaging device at each step.
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