High resolution dynamic pulse width modulation

Details High resolution dynamic pulse width modulation High resolution dynamic pulse width modulation

1997-11-14

1999-11-23

Barlow, John

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347237, 347247, 375238, 375239, 375375, B41J 247

Patent

active

059909234

ABSTRACT:
Pulse width modulation of signals, such as provided to a driver in a laser printer, is phase locked to a beam detect signal. In addition, it must permit continuously variable, arbitrarily small pulses at extremely high speeds. This invention describes a novel method and system using multiple streams of variable phase clocked outputs. The variable phase clocked outputs are combined with a clock generator to achieve these goals at low cost. As a result, the pulse width modulated signals provide continuously variable selectable pulse widths at extremely high speed.

REFERENCES:
patent: 4847641 (1989-07-01), Tung
patent: 5034967 (1991-07-01), Cox et al.
patent: 5115328 (1992-05-01), Kadono
patent: 5245637 (1993-09-01), Gersbach et al.
patent: 5438353 (1995-08-01), Morrison

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