System for raster imaging with automatic centering and image com

Details System for raster imaging with automatic centering and image com System for raster imaging with automatic centering and image com

1991-10-02

1994-03-08

Nguyen, Phu K.

395144, 395145, G09G 100

Patent

active

052934748

ABSTRACT:
The system provides for vertical or horizontal centering, or both, without the use of a memory frame buffer, of raster image data whose start time and duration cannot be controlled. The centering is accomplished by controlling the frame start time and line start time of the overall display of the raster imaging surface. This is accomplished in the case of vertical centering by detecting the time of the beginning of the first or last line, or both, of the total lines of the raster image data to be displayed and controlling the start time of a subsequent one of the frames based on that detected time. Horizontal centering is carried out by detecting the time of the beginning of the first or last column, or both, of the columns in one or more of the lines of the raster image data and controlling the start time of subsequent ones of the lines based on that detected time.

REFERENCES:
patent: 4706076 (1987-11-01), Rachini
patent: 4751502 (1988-06-01), Ishii et al.
patent: 4755810 (1988-07-01), Knierim
patent: 4768095 (1988-08-01), Wada et al.
patent: 4824106 (1989-04-01), Ueda et al.
patent: 4852024 (1989-07-01), Kurakake et al.

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