Data processing: software development – installation – and managem – Software program development tool – Translation of code
Reexamination Certificate
1998-06-25
2001-07-17
Chaki, Kakali (Department: 2762)
Data processing: software development, installation, and managem
Software program development tool
Translation of code
C714S048000
Reexamination Certificate
active
06263490
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a graphic device for use in an image processing apparatus for drawing or painting a graphic form.
In general, an image processing apparatus comprises a graphic large-scale integrated circuit (LSI) which is for use in drawing or painting a graphic form and which is provided in an image processing apparatus. The graphic LSI may be called a graphic device. The graphic LSI is driven by a device driver program which is operated on a central processing unit (CPU) of the image processing apparatus. It is necessary to debug the device driver program in order to prevent an incorrect graphic form.
However, it is difficult to carry out the debug of the device driver program at a high speed in a conventional graphic LSI as will be described later.
SUMMARY OF THE INVENTION
It is therefore an object of this invention to provide an image processing device capable of carrying out debug of a device driver program at a high speed.
Other objects of this invention will become clear as the description proceeds.
On describing the gist of this invention, it is possible to understand that a graphic device is for use in an image processing apparatus comprising buffer memory means for buffering a drawing data in a specific address to display the drawing data as a graphic drawing on a display unit.
According to this invention, the graphic device comprises graphic drawing means for producing the specific address in accordance with a drawing command and debug means for putting the image processing apparatus into a debug state when the specific address is coincident with a predetermined address.
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Chaki Kakali
Dam Tuan Q.
NEC Corporation
Sughrue Mion Zinn Macpeak & Seas, PLLC
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