Title:
REMOTE CONTROLLED PAN HEAD DEVICE
Document Type and Number:
Japanese Patent JP3639665
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent burning of a motor and breakage of a control circuit by an overload state due to an external cause, eliminate the overload state and carry out normal operation.
SOLUTION: A computing circuit 12 constantly monitors an electric current flowing in motors 15, 19 by detection values of motor electric current detection circuits 16, 20, controls to stop turning of the motors 15, 19 by regarding that an overload state is caused in the case when a state where continuous actuation of the motors 15, 19 exceeds a possible electric current value continues for two to three seconds and immediately reopen turning work in the case when the overload state is released.
Inventors:
Hirohisa Yano
Onuma Takashi
Onuma Takashi
Application Number:
JP1843496A
Publication Date:
April 20, 2005
Filing Date:
January 09, 1996
Export Citation:
Assignee:
Canon Inc
International Classes:
F16M11/12; H04N5/232; (IPC1-7): F16M11/12; H04N5/232
Domestic Patent References:
| JP62031796A | ||||
| JP4030804Y2 | ||||
| JP6022182A | ||||
| JP3012698U |
Foreign References:
| US5073824 | ||||
| US4974088 |
Attorney, Agent or Firm:
Yasuhiko Hibiya