Matrix Vision mvBlueFOX - Reprogramming CCD Timing; CCD Sensor Data

20.2 mvBlueFOX-[Model]220a (0.3 Mpix [640 x 480]) 201
20.2.4 Reprogramming CCD Timing
Reprogramming the CCD Controller will happen when the following changes occur
• Changing the exposure time
• Changing the capture window
• Changing Trigger Modes
Reprogram time consists of two phases
1. Time needed to send data to the CCD controller depending on what is changed
exposure : abt 2..3ms
window: abt 4..6ms
trigger mode: from 5..90ms,
varies with oldmode/newmode combination
2. Time to initialize (erase) the CCD chip after reprogramming this is fixed, abt 4.5 ms
So for example when reprogramming the capture window you will need (average values)
t
regprog
= change_window + init_ccd
t
regprog
= 5ms + 4.5ms
t
regprog
= 9.5ms
20.2.5 CCD Sensor Data
Device Structure
• Interline CCD image sensor
• Image size: Diagonal 6mm (Type 1/3)
• Number of effective pixels: 659 (H) x 494 (V) approx. 330K pixels
• Total number of pixels: 692 (H) x 504 (V) approx. 350K pixels
• Chip size: 5.79mm (H) x 4.89mm (V)
• Unit cell size: 7.4um (H) x 7.4um (V)
• Optical black:
– Horizontal (H) direction: Front 2 pixels, rear 31 pixels
– Vertical (V) direction: Front 8 pixels, rear 2 pixels
• Number of dummy bits: Horizontal 16 Vertical 5
• Substrate material: Silicon
MATRIX VISION GmbH