Multiple memory image display apparatus

Details Multiple memory image display apparatus Multiple memory image display apparatus

1988-01-14

1989-07-18

Caldwell, Sr., John W.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340721, 340725, 340799, G09G 114

Patent

active

048497452

ABSTRACT:
In an image display apparatus, a frame memory for storing original data and a display memory for storing display data are used as memories for storing image data. The image data is read out from the display memory and is displayed by a display system. When image data transfer from the frame memory to the display memory is performed through a programmable data conversion memory, data conversion is performed as image processing. The image display apparatus has a masking memory having an image area corresponding to the frame memory. The masking memory stores image data indicating a desired transfer area in the frame memory as a mask pattern in advance. The image data transfer from the frame memory to the display memory is performed only for an area designated by the masking memory.

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