Analogue Image Processing - Oce 3121 Technical & Service Manual

2 Analogue Image Processing

Outline
The Analogue processor PBA converts CCD drive signals and CCD output
signals (Analogue signals) to digital signals. (It also executes AE measure-
ment.)
CCD/CCD Driver
The copier's CCD is a linear image sensor consisting of a single line of 7500
photocells. The signals subjected to photoelectric conversion in the photocell
unit are forwarded to the CCD drive circuit. (The even-number pixels and the
odd-number pixels are sent separately.) The CCD drive circuit synthesises the
signals coming separately in even-number units and odd-number units for out-
put to the A-D conversion circuit.
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