Scan linearity correction parameters addressing ROM address...

Details Scan linearity correction parameters addressing ROM address... Scan linearity correction parameters addressing ROM address...

2008-07-08

2008-07-08

Pham, Hai C (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S234000, C347S116000

Reexamination Certificate

active

11211703

ABSTRACT:
This invention relates to an efficient way to calibrate and control a raster output scanner (ROS). The scan non-linearity of a ROS may be measured and an appropriate calibration curve setting for the ROS may be determined. The setting and other scan line parameters may then be used as an address to a memory, such as a read-only memory (ROM). The memory may store a set of calibration curve data and the address is used to look up the data from one of these curves. The ROS may then be controlled based on the calibration data retrieved from memory.

REFERENCES:
patent: 6157400 (2000-12-01), Genovese
patent: 6519055 (2003-02-01), Curry et al.
patent: 6529055 (2003-03-01), Neary
patent: 6608643 (2003-08-01), Lofthus et al.
patent: 6933957 (2005-08-01), Omori et al.
patent: 2006/0268098 (2006-11-01), Baretsky et al.

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