Camera Imager Internal Block Diagram - Access OCR640 Operational Description

Operational Description:
The camera imager is a USB 2.0 high speed camera capable of streaming images at 3.1 Mega pixel
resolutions. The data from the camera reaches the USB host through the USB high speed hub. It should
be noted that the camera is in shutdown state when there is no application software running. For
normal operation camera application software like Amcap or IScap should be running.
It should be noted that the lighting circuit is controlled by the imager. The right illumination could be
selected appropriately by the imager circuit and this kind of arrangement helps the USB host software to
control the illumination.
The following diagram shows the internal blocks of the camera imager along with the lighting circuit.
running. The camera shuts down when then application software is
closed.
Fig 2: Camera imager internal block diagram