Drawing apparatus

Details Drawing apparatus Drawing apparatus

2008-01-30

2011-12-13

Nguyen, Kevin M (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C348S333120

Reexamination Certificate

active

08077164

ABSTRACT:
A drawing apparatus includes a CPU. Target image data is written to a drawing area of an SDRAM, and the CPU performs resolution changing processing in a descending direction on the image data of the drawing area. The result of the resolution changing processing is written to a displaying area of the SDRAM, and an LCD monitor displays a low-resolution image on the basis of the image data of the displaying area on a display surface. On the display surface, a detection surface of a touch panel is laminated. When a touch operation is performed on the touch panel in order to draw and write an image and a character on the image of the display surface, the CPU repetitively detects a position of a touched point via the detection surface, and performs drawing processing dot by dot on the image data of the drawing area on the basis of the detection result. Furthermore, every time that a plurality of executions of the drawing processing are performed, the resolution changing processing is performed on the image data of the drawing area, so that the image on the display surface is periodically updated.

REFERENCES:
patent: 2005/0117044 (2005-06-01), Suto
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patent: 2003-153157 (2003-05-01), None
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patent: 2005-184778 (2005-07-01), None
Japanese Office Action dated Jan. 27, 2009, issued in corresponding Japanese Patent Application No. 2007-020404.
Japanese Office Action dated Sep. 8, 2009, issued in corresponding Japanese Patent Application No. 2007-020404.

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