JPS61183690A - 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 [Technical Field of the Invention] The present invention relates to an image display gray device applied to, for example, an image filing device.

[Technical background of the invention and its problems]

Conventionally, a display device used in an image 7 eye ringing device using an optical disk has 1224 (effective scanning lines) x
The resolution is low at 960 (effective horizontal pit number), and it may be difficult to
The displayed image is sometimes difficult to see because it is displayed in a reduced size.

However, high-resolution ammonium chloride analysis requires high-speed reading of image data, which poses many technical problems.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and its object is to provide an image display device that can easily read out image data at high speed, has high resolution, and is easy to view.

[Summary of the invention]

This invention can, for example, transfer image data for one screen on a one-to-one basis.
By using a so-called bit-Mazda memory that can store data corresponding to the number of bits and reading the required number of bits in parallel from this bit-Mazda memory, the data readout speed is increased, and the number of scanning lines of one cathode ray tube is increased. This allows the image data to be displayed without being reduced.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows an image filing device applied to the present invention. The image scanning section 11 optically scans, for example, a document image and converts it into digital image data. It is stored in the optical storage section 13. Further, the image data stored in the optical storage section 13 and the image data output from the image scanning section 11 are transferred to a cathode ray tube (C) via a main control section 12.
The image is supplied to an image display device 14 such as RT) so that it can be displayed, and it is also supplied to an image forming section 15Vc consisting of a blinking device so that it can be printed.

FIG. 1 shows the main part of this invention.

The page memory 21, which can store image data for one screen, has a high-resolution image obtained by scanning, for example, an A4 size document outputted from the image scanning section 11 or the optical storage section 13 at a scanning density of about 8 pages/■. Image data PD is stored. The image data stored in the page memory 21 is enlarged/reduced and supplied to the synthesis section 23 via the control section 22. This enlargement/reduction control section 22 is operated by a control signal Sc supplied from the main control section 12 as necessary, and when the image data stored in the page memory 21 corresponds to A4 size, the enlargement/reduction operation is performed. It is recommended not to do this.

On the other hand, the main control section 12 supplies the character code memory 24 with rounded character code data CD for providing, for example, operational guidance, as needed.

The character code data stored in the character code memo 1Jj4 is sequentially supplied to the character generator 25, and the character generator 25 outputs image data corresponding to the input character code. This image data is supplied to the synthesis section 23, and is synthesized with the image data output from the enlargement/reduction control section 22 as necessary. The image data output from the synthesis section 23 is supplied to the rotation control section 26.

The rotation control unit 26 rotates input image data at, for example, 90° or 180° in response to a rotation command signal S supplied from the main control unit 12 and a timing signal supplied from the display control unit 27.

It rotates 270 degrees, and image data is normally output without rotation. This image data is supplied to a so-called bit-machine memory 2BVC.

This bit/matsugu memory 28 is a cathode ray tube (described later).
The image data for one screen of CRT 32 is stored in one-to-one correspondence with the display.

That is, as shown in FIG.
80, this RAM2Jl~28so
I/C sequential image data is stored. The image data stored in the bit map memory 28 is sequentially output in five batches of 16 pits each. That is, first, the selector 29 selects RAMj11-281. More 1
6 pits are selected and output, next busy, RAM2B, ~28
The 16 pits read out from 32 are selectively outputted by selector 29VC. By sequentially repeating this operation, image data for one screen is output one after another at high speed. This reading control is performed by the display control section 27.

On the other hand, the image data successively output in parallel by 16 pits by the selector 29 is supplied to a p/s (parallel/serial) converter 30. The conversion section 30 is constituted by a well-known shift register, and the shift register performs a conversion operation in response to a 200 MHz clock signal supplied from the clock generation section 3. Jin's P/
For example, the serial image data output from the S converter 30 has an effective number of scanning lines of 2400 and an effective number of horizontal bits of 179.
Two of them are supplied to a cathode ray tube 32, which has a vertical deflection frequency of 60 Hz or more and whose screen is flat and whose four corners are right angles, for display.

According to the above embodiment, the image data is stored in the pit map memory 28, and the image data of 80 pits is read out in parallel in 16 bits each from the pit map memory 28.

Therefore, RAM28 with an access time of 100 ns
Since it is possible to read a large amount of image data at high speed using 1 to 28 sots, the PA converter 30° is operated by a 200 MHz clock signal, the number of effective scanning lines is 2400, and the number of effective horizontal bits is 1792. Using the cathode ray tube 32, it is possible to display A4 size image data in high resolution without reducing it.

Note that this invention is not limited to the above embodiments,
Of course, various modifications can be made without changing the gist.

〔Effect of the invention〕

As described above in detail, according to the present invention, it is possible to easily read out image data at high speed, and it is possible to provide an image display gray device with high resolution and easy viewing.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of an image display device according to the present invention, FIG. 2 is a diagram shown to explain the configuration of a pit map memory, and FIG. 3 is an image diagram to which the present invention is applied. FIG. 7 is a configuration diagram showing a 7-eye ring device. 12... Main control unit, 28... Pit-mag memory, j I! 1~28@6 ”” RkMs 29
”'Selector, 32...Cathode ray tube.

Claims (2)

[Claims] (1) A storage means for storing one screen worth of image data corresponding to the display, a means for sequentially retrieving the image data stored in the storage means in parallel in parallel, and converting the retrieved parallel data into serial data. What is claimed is: 1. An image display device comprising means for converting data into data, and display means for displaying the converted data. (2) The image display device according to claim 1, wherein the storage means is a bit map memory composed of a plurality of RAMs (random access memories).