SVS-Vistek evo1050 Operation Manual - page 41
6 Basic understanding of CCD Technology | 34
In a single-tap CCD the read out of the pixel charges takes place in
series, pixel for pixel and line by line sequence. The maximum frame
rate is determined by the pixel clock frequency and the total number
of pixels that are transferred for readout.
.
In a dual-tap CCD (CCD with two outputs) the read out of the pixel
charges takes place in a serial/parallel sequence, where each line is
divided in half and the pixels of each half are read out simultaneously in
sequence and line by line. For a given pixel clock frequency only half the
time is required to read out the entire array resulting in a doubling of the
framerate. Due to the sequence of arriving pixel information the frame
grabber has to “reconstruct” the pixel information in order to display the
image correctly.
1 Tap Readout of CCD
Dual Tap Readout of CCD
“Single Tap Output”
“Dual Tap Output”
6.1 Read out from CCD
6 Basic understanding of
CCD Technology