M66335FP

MITSUBISHI 〈DIGITAL ASSP 〉 〉 MITSUBISHI 〈DIGITAL ASSP M66335FP M66335FP FACSIMILE IMAGE DATA PROCESSOR FACSIMILE IMAGE DATA PROCESSOR DESCRIPTION The M66335 is a facsimile image processing controller to turn into binary signals analog signals which have been output through photoelectric conversion by the image sensor. The image processing functions includes peak value detection, uniformity correction, resolution change, MTF compensation, γ correction, detection of background/character levels, error diffusion, separation of image zones, and designation of regions. This controller contains not only the analog processing circuit, the A/ D converter of a 7-bit flash type and image processing memory, but also the image sensor and the interface circuit to the CODEC (Coder and Decoder). Therefore, this LSI alone is capable of image processing. Built-in A/D converter of a 7-bit flash type Built-in image processing memories FEATURES High speed scan (max. 2 ms/line, typ. 5 ms/line) Compatibility with up to the B4 (8 pixels/mm, 16 pixels/mm) image sensor Generation of control signals for the image sensor (CCD, CIS) For CCD: SH, CK1, CK2, RS For the contact sensor (CIS): SH, CK1, CK2 Built-in analog processing circuit (equivalent to the M64291) Sample and hold circuit Gain control circuit Black level clamping circuit Reference internal power supply for the A/D converter Uniformity correction memory, Line memory, Error memory, γ correction memory External output...