TC255P

336-

× 244-PIXEL CCD IMAGE SENSOR

SOCS057 – JUNE 1996

2-5

POST OFFICE BOX 655303

image-storage area

After exposure, the image-area charge packets are transferred through the image-clear line to the storage area.

The stored charge is then transferred line by line into the serial register for readout. Figure 3 illustrates the timing

to (1) transfer the image to the storage area and (2) to transfer each line from the storage area to the serial

register.

serial register

After each line is clocked into the serial register, it is read out pixel by pixel. Figure 3 illustrates the serial-register

clock sequence.

SAG

SRG

IAG1

IAG2

SAG

Expanded Section of Parallel Transfer

1)

2)

3)

1) End of serial readout of line

2) Transfer of new line to serial register

3) Beginning of readout of new line

244 Clocks

244 Cycles

Composite

Blank

ABG

IAG1

IAG2

SAG

SRG

339 Cycles

SRG

t = 80 ns

244 Clocks

Electronic

Shutter

Operation

Integration Time

Figure 3. Timing Diagram