The Imager's Driving Circuitry
The driving circuitry is implemented as FPGA, which is loaded at
system power-on. The reprogrammability gives the option to drive the
imager in various modes, which allow to choose the region-of-interest
and sampling schemes.
- Preprocessing. In addition to the smoothing, implemented
in the processing unit, sensor specific preprocessing is required.
The high variation in ... requires offset correction. Correction
values are stored in an EEPROM.
- Address generation. CMOS imagers are ROM-like and
require address values to read the image intensity at a specific
- Synchronization. The synchronization of the whole sensor
system depends very much on the chosen imager. Therefore, the driving
unit is a good place to handle it.
<- The ROFlow-Sensor (TOP)
<- The Imager
SET, February 1998