Graphic pattern processing apparatus

A graphic data generating apparatus comprising:

• means for outputting graphic data of a plurality of pixels of an image;
• a display memory, connected to said outputting means, for storing pixel data defining said graphic data for each of the pixels, each of said pixel data having a plurality of bits;
• and
• a graphic data processing apparatus including means for reading out word data having a plurality of pixel data simultaneously at a word position of said display memory specified by a source memory address, means for selecting pixel data specified by a source pixel address in the readout word data, means for writing the selected pixel data into said display memory at a pixel position specified by a destination pixel address of word data which is specified by a destination memory address, and means for updating said source pixel and memory addresses to specify the selected pixel in a first scanning direction and for updating said destination pixel and memory addresses to specify the selected pixel in a second scanning direction.

A method of processing data of a graphic image having a plurality of pixels comprising the steps:

• storing pixel data defining a graphic image for each of the pixels in a display memory, each of said pixel data having a plurality of bits;
• reading out word data having a plurality of pixel data simultaneously at a word position of said display memory specified by a source memory address;
• selecting pixel data specified by a source pixel address in the readout word data;
• and
• writing the selected pixel data in said display memory at a pixel position specified by a destination pixel address of word data which is specified by a destination memory address.

A method of generating data of a graphic image a plurality of pixels comprising the steps:

• storing pixel data defining an attribute of a graphic image for each of the pixels in a display memory, each of said pixel data having a plurality of bits;
• reading out word data having a plurality of pixel data simultaneously at a word position of said display memory specified by a source memory address;
• selecting pixel data specified by a source pixel address in the read out word data;
• writing the selected pixel data in said display memory at a pixel position specified by a destination pixel address of word data which is specified by a destination memory address;
• and
• updating said source pixel and memory addresses to specify the selected pixel in a first scanning direction and updating said destination pixel and memory addresses to specify the selected pixel in a second scanning direction.

A graphic data generating apparatus comprising:

• means for outputting two-dimensional graphic data having a plurality of pixels of an image;
• a display memory connected to said outputting means for storing pixel data defining said graphic data for each of the pixels, each of said pixel data having a plurality of bits;
• and
• a graphic data processing apparatus including means for reading out word data having a plurality of pixel data simultaneously at a word position of said display memory specified by a source memory address, means for selecting pixel data specified by a source pixel address in the readout word data, means for writing the selected pixel data into said display memory at a pixel position specified by a destination pixel address of word data which is specified by a destination memory address, and means for successively updating said source pixel and memory addresses to scan the pixel data in an area of a two-dimensional graphic image which becomes a source in the two-dimensional graphic image which becomes a source in a first scanning direction and for successively updating said destination pixel and memory addresses to scan the pixel data in the area of the two-dimensional image which becomes a destination in a second scanning direction.

A method of generating data of a two-dimensional graphic image of a plurality of pixels comprising the steps:

• storing pixel data defining a graphic image for each of the pixels in a display memory, each of said pixel data having a plurality of bits;
• reading out word data having a plurality of pixel data simultaneously at a word position of said display memory specified by a source memory address;
• selecting pixel data specified by a source pixel address in the read out word data;
• writing the selected pixel data in said display memory at a pixel position specified by a destination pixel address of word data which is specified by a destination memory address;
• and
• successively updating said source pixel and memory addresses to scan the pixel data in an area of the two-dimensional graphic image which becomes a source in a first scanning direction, and successively updating said destination pixel and memory addresses to scan the pixel data in the area of the two-dimensional graphic image which becomes a destination in a second scanning direction.