JPS638787A - Continuous image display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a continuous image display device, and particularly to a continuous image display device that continuously displays images over a wider range than a display screen.

[Conventional technology]

Conventionally, in this type of image processing device, the number of pixels on the display screen is about 512 x 512 to 1024 x 1024,
Images having more pixels than this are displayed after being reduced to a displayable number of pixels by pixel thinning or partial display of the image.

[Problem that the invention seeks to solve]

However, in order to display a wide range of pixels, the conventional image processing device described above thins out pixels or displays them partially, so if pixels are thinned out, it is not possible to display the entire image. However, it has the disadvantage that the resolution becomes low.Although high resolution can be achieved by performing partial display, it has the disadvantage that the entire image cannot be displayed.

An object of the present invention is to obtain an effect equivalent to displaying the entire image at high resolution by continuously switching and displaying partial but high resolution display drawings.

[Failure to solve the problem]

The continuous image display device of the present invention includes a large-capacity image storage section that stores a large number of images, a high-speed image storage section that can transfer data at high speed, an image display section that displays images at high speed, and a large-capacity image storage section. The image forming apparatus includes an input switching section that switches an input path from the high-speed image storage section to the high-speed image storage section, and an output switching section that switches the output path from the high-speed image storage section to the image display section.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In the continuous image display device shown in FIG. 1, the large-capacity image storage section 1 is relatively slow but capable of storing a large amount of image data. Each one! l1i
The lj image has high resolution and is obtained by dividing a wide range of images.

The high-speed image storage section 2 is composed of 16 memories 21. The memory 21 stores an image four times the area of the display screen, and the eight images surrounding the currently displayed memory are always stored in other memos IJK.

When the display screen is switched, newly surrounding images that are not in the memory 21 are read from the large-capacity image storage section 1 into the memory 21 in order of priority.

The image display section 3 displays image data from the memory 21.

The input switching section 4 switches 1 which memory 21 to write image data in when transferring image data from the large capacity image storage section 1 to the high speed image storage section 2 24 The output switching section 5 switches the image data from the high speed image storage section 2 to the image display section 3 When transferring image data to the memory 21, which memory 21 is to be read from is switched.

The DMA transfer unit 6 transfers DMA from the memory 21 to the image display unit 3.
Perform the transfer. The transfer interval is 10 times/second, and the transfer start position can be changed within a range where the display screen does not extend beyond the memory 21.

〔Effect of the invention〕

The continuous image display device of the present invention can effectively display high-resolution and wide-range images by continuously displaying high-resolution images by combining a large-capacity image storage unit and a high-speed image storage unit. There is an effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...--Large capacity image storage unit, 2...High-speed image storage unit, 3... Image display unit, 4......
・Input switching section, 5... Output switching section, 6...
-・DMA transfer section, 21...Memory.

Claims (1)

[Claims] a high-capacity image storage section that stores a large number of images; a high-speed image storage section that can transfer data at high speed; an image display section that displays images at high speed; A continuous image display device comprising: an input switching section that switches an input path; and an output switching section that switches an output path from the high-speed image storage section to the image display section.