System for converting grayscale resolution in a printing apparat

Details System for converting grayscale resolution in a printing apparat System for converting grayscale resolution in a printing apparat

1994-09-06

1997-02-11

Fuller, Benjamin R.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347 5, B41J 247, B41J 2938

Patent

active

056025793

ABSTRACT:
A low-cost, high-speed system for converting high-grayscale-resolution image data to a grayscale resolution optimized for a particular output device, such as an LED bar or ink-jet printhead. A static random-access memory accepts at its address port a full image datum. The most significant digits of the datum relate to a look-up table selected for optimum performance in a given situation. The least significant digits of the datum represent the actual image datum. When the full image datum is applied to the address port, the address location identical to the full image datum outputs an output value which has been pre-loaded into the memory.

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