JPS5929876U

JPS5929876U - image display device

Info

Publication number: JPS5929876U
Application number: JP1982125662U
Authority: JP
Inventors: 康人竹内; 赤坂　秀也
Original assignee: 横河電機株式会社
Priority date: 1982-08-20
Filing date: 1982-08-20
Publication date: 1984-02-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案に係る画像表示装置の一実施例を示す構
成図、第２図は動作を説明するためのタイムチャートで
ある。１１・・・フレームメモリ、１２．２２・・・ＤＡ変換
器、１３．２３・・・ローパスフィルタ、１４．２４・
・・増幅器、１５・・・第１のＣＲＴ表示装置、２５・
・・第２のＣＲＴ表示装置、３０・・・制御回路。FIG. 1 is a block diagram showing an embodiment of an image display device according to the present invention, and FIG. 2 is a time chart for explaining the operation. 11... Frame memory, 12.22... DA converter, 13.23... Low pass filter, 14.24...
...Amplifier, 15...First CRT display device, 25.
...Second CRT display device, 30...Control circuit.

Claims

[Scope of utility model registration request]

(1) a set of frame memories that accommodate image data;
A line buffer is provided for temporarily storing pixel serial image data being successively read out from the frame memory for at least one scanning line, and the pixel serial image data is read out from the frame memory in synchronization with or almost in step with reading out the pixel serial image data. DA converting the data to obtain a video signal and displaying it on the first CRT display device, and at the same time reading out the contents of the line buffer at a slower speed than reading from the frame memory.
An image display device characterized in that it is configured to perform A conversion to obtain a video signal and display it on a second CRT display device.

(2) The signal method for the second CRT display device is a standard TV method or a method similar thereto, and the signal method for the first CRT display device is a high-definition TV method that is faster than the standard method. An image display device according to claim 1 of the utility model registration claim.

(3) The second CRT display device is installed in an external device, and the video signal obtained from the line buffer is transferred to the second CRT display device through some kind of signal transmission, temporary storage, or semi-permanent means.
2. The image display device according to claim 1, wherein the image display device is adapted to be supplied to a CRT display device.

(4) The image display device according to claim 1, wherein the line rates of the signal systems of the first CRT display device and the second CRT display device are in an integral multiple relationship. .

(5) The aspect ratio of the CRT screen is 3:5 in the first CRT display device and 3:4 in the second CRT display device, as set forth in claim 1 of the utility model registration claim. image display device.

(6) The image display device according to claim 5, wherein the video signal is obtained by reading only a limited section from the line buffer in order to adjust the aspect ratio.

(7) The image display device according to claim 6, wherein the limited section is movable.

(8) The video signal is obtained by reading all the contents of the line buffer, ignoring the difference in aspect ratio, and the second CRT display device displays the video signal with a shortened vertical amplitude. An image display device according to claim 5 of the utility model registration claim.