Antilog Patents (Class 396/230)
  • CMOS-analog IC for controlling camera and camera system using the same
    Patent number: 5708880
    Abstract: In a camera controller using a CMOS-analog-IC, a microcomputer, logarithmic compression type distance measuring and photometric circuits, each constituted by a CMOS device having a parasitic bipolar transistor having a p- or n-type well as a base and an n.sup.+ -type layer in the p-type well or p.sup.+ -type layer in the n-type well as an emitter, and the like are arranged on the same chip.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: January 13, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Keiji Kunishige, Azuma Miyazawa