Title:
SEQUENCE CONTROL DEVICE OF CAMERA OR THE LIKE
Document Type and Number:
Japanese Patent JPS59189406
Kind Code:
A
Abstract:
PURPOSE:To simplify the constitution of a circuit, and also to manufacture a titled device at a low cost by constituting said device so that the reference frequency can be switched on the way of sequency, and a dynamic range by a time base in sequence control of a camera, etc. is not so necessary. CONSTITUTION:A sequence control device of a camera, etc. is constituted of a reference frequency oscillating circuit, a sequence controlling circuit which is controlled by this reference frequency and also outputs a frequency switching signal on the way of sequence, and a switching circuit for switching the reference frequency by this frequency switching signal. As for the reference frequency oscillating circuit 7 for controlling the sequence controlling circuit 6, the oscillation frequency is determined by an internal resistance or a constant current source, and a capacitor C31. For instance, when the sequence controlling circuit 6 turns on a transistor Q31, the oscillation period becomes k(C31+C32), but in case of C31>>C32, the oscillation period becomes kC32, and the reference period can be enlarged remarkably.
Inventors:
KAJIWARA JIYUNJI
TSUCHIYA MITSUHARU
YASUI FUMIO
TSUCHIYA MITSUHARU
YASUI FUMIO
Application Number:
JP6388683A
Publication Date:
October 27, 1984
Filing Date:
April 12, 1983
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G03B17/18; G02B7/28; G03B19/02; G05B19/02; G05B19/07; (IPC1-7): G02B7/11; G03B3/00; G03B7/091; G03B17/18; G03B19/00; G05B19/02
Domestic Patent References:
| JPS57109053A | 1982-07-07 |
Attorney, Agent or Firm:
Akira Kobiji (2 outside)