Image readout apparatus

Details Image readout apparatus Image readout apparatus

1986-02-07

1988-08-09

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358284, 382 54, H04H 140

Patent

active

047632011

ABSTRACT:
An image readout apparatus includes a readout unit for reading an original image; a storage unit for storing a signal obtained by the readout unit while reading an image having a predetermined reflectance; a hold unit for holding the maximum value of reflectance of the original image while the readout unit reads the original image; and a quantization unit for controlling an output signal level of the storage unit in accordance with the maximum value and quantizing a readout signal of the original image in accordance with the output signal level.

REFERENCES:
patent: 4420742 (1983-12-01), Tadauchi et al.
patent: 4520395 (1985-05-01), Abe

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