초록 ▼

A video signal of a still image is written into a still image area SIA in a video memory 310, whereas a video signal of a moving picture is written into a moving picture area MIA in the video memory 310. A video signal is read out from the video memory 310 while scaling up or down the video image, a

A video signal of a still image is written into a still image area SIA in a video memory 310, whereas a video signal of a moving picture is written into a moving picture area MIA in the video memory 310. A video signal is read out from the video memory 310 while scaling up or down the video image, and the scaled video signal is then supplied to a display device. This enables a scaled moving picture and a scaled still image to be displayed on the display device.

대표청구항 ▼

[ What is claimed is:] [1.] A method of displaying a moving picture and a still image simultaneously on a display device of a computer system, said method comprising the steps of:(a) writing background image data representing a background image in a first video memory, said first video memory having

[ What is claimed is:] [1.] A method of displaying a moving picture and a still image simultaneously on a display device of a computer system, said method comprising the steps of:(a) writing background image data representing a background image in a first video memory, said first video memory having a memory space corresponding to a display screen of said display device;(b) writing key data representing a superimposing area in said first video memory, the superimposing area including a first still image area and a first moving picture area;(c) writing a still image video signal into a second still image area in a second video memory;(d) continuously writing a moving picture video signal into a second moving picture area in said second memory, while reading out a first video signal from said second video memory;(e) scaling up or down a video image represented by the first video signal to produce a second video signal so that a scaled still image and a scaled moving picture image each represented by the second video signal have identical dimensions with the first still image area and the first moving picture area in the first video memory, respectively;(f) combining the second video signal with a third video signal read out from said first video memory by selecting the second video signal within the superimposing area represented by the key data while selecting the third video signal outside the superimposing area, thereby to produce a fourth video signal; and(g) supplying the fourth video signal to said display device to display a scaled moving picture and a scaled still image superimposed on the background image on the display device.