Digital modulation technique

Details Digital modulation technique Digital modulation technique

H - Electricity

03

K

332/34, 354/236.

H03K 7/08 (2006.01) H04N 1/405 (2006.01)

Patent

CA 2027080

ABSTRACT A digital pulse with modulator is described for use with a Raster-scanning print engine in which a grey scale having a high number of levels, typically at least 63, is described. This modulator reduces the amount of information requiring processing in the input multiple bit image signal by simulating one of the least significant bits as a delay applied to modulate the output print engine signal pulse width. With suitable speed components, a grey scale of at least about 255 levels can be provided.

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