Control system for camera with multiple opto-sensors
US5481331A · kind A · utility
6Cited by
8References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 21, 1994 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Apr 21, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a photographic camera having a plurality of opto-sensors and a microprocessor-based controller, the opto-sensor output signals are coupled via a common bus connection to an input terminal of the controller. A programmably variable output impedance common to the opto-sensors is selectably set for each corresponding selected opto-sensor such that the output signal for each of the selected opto-sensors is at or above a predetermined threshold value at the input to the controller irrespective of differing current output performance of the individual opto-sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.