Title:
CAMERA INCORPORATED WITH STROBOSCOPE
Document Type and Number:
Japanese Patent JPH01138543
Kind Code:
A
Abstract:
PURPOSE:To optimize the distribution of power to a stroboscopic circuit and other circuits by detecting the level of a power source voltage, inscreasingly or decreasingly controlling a current charged to a main capacitor according to the level and determing power used by the stroboscopic circuit. CONSTITUTION:A power source voltage level detecting circuit 7 detects the power source voltage level of a power source battery 2, and outputs the result to a discriminating circuit 8. If it discriminates that the detected power source voltage level exceeds a prescribed level higher than a min. level for the operations of varying circuits 5 except the stroboscopic circuit, it increasingly or decreasingly controls a current charged to the main capacitor according to the power source voltage level, and determines power used by the stroboscopic circuit 6 according to the high or low power source voltage level so that the power source voltage level is not lower than a high, prescribed voltage level higher than the min. level for the operations of the circuits 5 except the stroboscopic circuit 6. Thus the distribution of power to the stroboscopic circuit and the other circuits can be optimized.
Inventors:
MIYAMOTO RYOSUKE
SAKAI SHINJI
OKINO TADASHI
SAKAI SHINJI
OKINO TADASHI
Application Number:
JP17901187A
Publication Date:
May 31, 1989
Filing Date:
July 20, 1987
Export Citation:
Assignee:
CANON KK
International Classes:
G03B7/26; G03B15/05; (IPC1-7): G03B7/26; G03B15/05
Attorney, Agent or Firm:
Minoru Nakamura