JPH01126721A - Control system for multi-window display device - Google Patents

Abstract

PURPOSE:To easily observe an active window by matching high luminance position information to a window, which is operated in a multi-window (the active window). CONSTITUTION:Display position information 5 and high luminance position information 6 are defined by coordinates on a display device and the high luminance position information 6 are defined the top lef-hand coordinate and bottom right-hand coordinate of a quadrilateral, which is caused to be high luminance, on the display device. When the display position information are obtained as (cx, cy), the top-left-hand of the high luminance position information 6 is obtained as (x1, y1) and the bottom right-hand is obtained as (x2, y2), a position comparing part 3 compares the display position information 5 and the high luminance position information 6 and only in case of x1<=cx<=x2 and y1<=cy<=y2, a high luminance control signal 9 is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data display device, and particularly to a control method for a multi-window display device.

[Conventional technology]

Conventionally, this type of multi-window display device has adopted a system in which the content to be displayed on the display device is stored and the portion to be displayed by each window is stored in the VRAM.

[Problem that the invention seeks to solve]

The conventional multi-window display device described above stores display content in the VRAM corresponding to the display device, so the brightness of the content displayed on the display device depends on the VRAM.
The problem is that the brightness of the operating window (active window) is the same as the brightness of other parts, making it difficult to see the contents of the active window.

[Means for solving problems]

A control method for a multi-window display device according to the present invention includes a display position information storage unit that indicates the position of a scanning line on the display device, a high-brightness position information storage unit that indicates a position where the brightness is to be increased on the display device, and The display device includes a brightness control unit that increases the brightness of data displayed on the display device, and a position comparison unit that compares the display position and the high brightness position to detect a high brightness portion.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention. Reference numeral 1 indicates a display position information storage unit that indicates the position of a scanning line on the display device, 2 indicates a high-brightness position information storage unit that indicates a position on the display device where the brightness is to be increased, and 3 indicates a comparison between the display position and the high-brightness position. a position comparison unit that detects a high brightness area; 4 a brightness control unit that increases the brightness of data displayed on the display device;
5 is display position information of the scanning line, 6 is high brightness position information, 7 is a high brightness control signal, 8 is a display signal, and 9 is a high brightness display signal.

The display position information 5 and the high brightness position information 6 are defined by coordinates on the display device, and the high brightness position information 6 is defined by the upper left coordinates and lower right coordinates of a rectangle to be made high brightness on the display device. The display position information 5 is (CX, CY), the upper left of the high brightness position information 6 is (Xi, Yl), the lower right is (X2.
Y2). The position comparator 3 compares the display position information 5 and the high brightness position information 6 and turns on the high brightness control signal 9 only when the following equation is satisfied.

(x1≦Cx≦X2) AND (Y,≦CY≦Y2)
Note that the coordinates are X in the horizontal direction of the display device.

The vertical direction is Y.

The brightness control unit 4 inputs the display signal 8 and outputs a high brightness display signal 9.
However, only when the high brightness control signal 7 from the position comparator 3 is on, the level of the display signal 8 is raised to make it high brightness.

〔Effect of the invention〕

As described above, the present invention has the effect that the brightness of the active window can be made higher than the others by matching the high brightness position information to the operating window (active window) within the multi-window.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Display position information storage part, 2... High brightness position information storage part, 3... Position comparison part, 4... Brightness control part, 5
...Display position information, 6...High brightness position information, 7...
- High brightness control signal, 8... Display signal, 9... High brightness display signal.

Claims (1)

[Claims] In a multi-window display device, a display position information storage unit indicating the position of a scanning line on the display device;
a high-brightness position information storage unit that indicates a position where brightness can be increased on the display device; a position comparison unit that compares the display position and the high-brightness position to detect a high-brightness portion; 1. A control method for a multi-window display device, characterized in that the control method includes a brightness control section that increases the brightness of data to be displayed.