This seminar room contains a high-resolution digital document
A document camera (doc cam) is
essentially an overhead projector with a camera mounted on top.
It has lights on each side that allow objects to be illuminated and
projected (in high resolution - 1280x1024 pixels) onto the
screen using the room's projection system. Controls on the
front include freeze, zoom in and zoom out buttons. In
addition to displaying traditional transparencies, this device can
display any three dimensional object (see examples below).
Figure 1. "Selective" Doc Cam Buttons located on front.
Note: In order to simplify device operation, a cover plate has been
installed exposing only buttons used for commonly needed device
Figure 1a. Doc Cam Buttons
POWER button (left) and the FREEZE button (right).
Pressing (repeatedly) the POWER button turns the device on and off
(includes lamps). Pressing the FREEZE button will result in the continuous static
display of the current object until the button is pressed a second time.
Figure 1b. Doc Cam Buttons
The two IRIS buttons control the brightness and darkness of the
displayed image. The two ZOOM buttons control the scale of the
object that is displayed and the two FOCUS buttons control the
sharpness of the displayed object.
Examples of document camera
Figure 1. Printed material (e.g.
Figure 2. Objects (e.g. car keys).
Figure 3. "Live"
Handwritten material (e.g. use a pen and a blank piece of paper
during the presentation.)