Control system for an apparatus using a microcomputer
AssigneeNikon Corporation
InventorsTakashi Saegusa, Seiichi Yasukawa
Life of this patent
Estimating the term…
Abstract
A control system comprises a reset unit for outputting a reset output by the manipulation of a manually operable member, a first microcomputer adapted to be reset by the reset output, a second microcomputer, and a controller for deactivating the second microcomputer. The controller deactivates the second microcomputer in accordance with the outputs of the first microcomputer and the second microcomputer. When there is no output from the second microcomputer, the controller deactivates the second microcomputer in response to the output of the first microcomputer determining no response from the second microcomputer.
Claims9
A control system for an apparatus using a microcomputer, comprising:
- a first microcomputer;
- a second microcomputer;
- a reset circuit adapted to reset said first microcomputer while said first microcomputer is in operation, said reset circuit being responsive to manipulation of a manually operable member, and the resetting of said first microcomputer by said reset circuit being effected independently from operation of said second microcomputer so as not to interrupt operation of said second microcomputer;
- and
- a control circuit that is distinct from said first and second microcomputers, said control circuit deactivating said second microcomputer in accordance with outputs of said first microcomputer and said second microcomputer, and deactivating said second microcomputer in response to an output of said first microcomputer determining said second microcomputer does not produce an output.
A camera system using a microcomputer, comprising:
- a first microcomputer;
- a second microcomputer;
- a reset circuit adapted to reset said first microcomputer while said first microcomputer is in operation, said reset circuit being responsive to manipulation of a manually operable member, and the resetting of said first microcomputer by said reset circuit being effected independently from operation of said second microcomputer so as not to interrupt operation of said second microcomputer;
- and
- a control circuit that is distinct from said first and second microcomputers, said control circuit deactivating said second microcomputer in accordance with outputs of said first microcomputer and said second microcomputer, and deactivating said second microcomputer in response to an output of said first microcomputer determining said second microcomputer does not produce an output.
Dependencies are inferred from the claim text.