JPS61248083A - Window brightness adjusting system - 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] [Summary] A display device capable of displaying multiple windows, in which the brightness of display data in a window area specified by an operator can be adjusted separately from display data in other screen areas. .

[Industrial application field]

The present invention relates to a display device capable of displaying multiple windows,
In particular, the present invention relates to a window brightness adjustment method that allows the brightness of only display data within a designated window area to be adjusted separately.

Various display devices have been developed and put into practical use with the development of the information society, but there are displays that can perform so-called multi-window display, in which the display screen is divided into multiple areas and separate display data is displayed in each area. The device is in use.

In such a display device, when displaying separate display data in multiple windows and performing processing corresponding to the display data of each window, it is possible to display only the display data in the specified window by changing the brightness. This is desirable.

[Conventional technology]

FIG. 3 is a diagram illustrating an example of a conventional display device.

The display device 1 displays windows 3 and 4 on the display screen 2, for example. Windows 3 and 4 each display separate display data and are independent screens.

One variable resistor 5 is provided to adjust the brightness of the display screen 2, and the brightness of the entire display screen 2 can be adjusted, but only within the area of the window 3 or 4 can be adjusted separately from other screen areas. Brightness cannot be adjusted.

[Problem that the invention seeks to solve]

As mentioned above, conventionally, although it was possible to adjust the brightness of the entire display screen, it was not possible to adjust the brightness of each window area separately, and even if the screen was an independent screen, it was not possible to adjust the brightness of each window area separately. There is a problem in that it is impossible to perform processing such as attracting attention.

[Means for solving problems]

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

10 is a processor that controls the entire display device, 11 is a RAM that stores display data, 12 is a ROM that stores a program that instructs the operation of the processor 10, and 13 is an interface circuit that receives display data from a host device.

14 is a screen memory that stores display data for one screen;
Reference numeral 5 denotes a display control circuit that scans and reads out the screen memory 14, converts it into a video signal, supplies it to the display section 16 together with horizontal and vertical synchronization signals, and also sends out a screen designation signal instructing a window area for brightness adjustment. It is.

16 is a display section that displays display data; 17 is a switch that connects or disconnects the variable resistor 6 to the brightness adjustment circuit of the display section 16 based on the screen designation signal; 6 is a variable resistor that adjusts the brightness of the designated window; A keyboard 18 is used by the operator to input commands and data.

The processor IO is configured to send a screen designation signal to the switch 17 while the display control circuit 15 scans the window area designated by the keyboard 18, and adjusts the brightness of the designated window using the variable resistor 6.

[Effect]

With the above configuration, the operator instructs the processor 10 by inputting the window for which the brightness is to be adjusted from the keyboard 18, and the processor 10 controls the display control circuit 15 to specify the address for reading out the screen memory 14. The address of the designated window area is sent to the switch 17 as a screen designation signal, and while the designated window area is being scanned, the switch 17 is closed and the variable resistor 6 is connected to the brightness adjustment circuit of the display section 17.

Therefore, by varying the variable resistor 6, the brightness of a designated window area of the display section 16 can be adjusted.

〔Example〕

FIG. 2 is a diagram explaining the operation of FIG. 1.

In FIG. 1, a processor IO reads a program stored in a ROM 12 and operates. Display data is sent from the host device via the interface circuit 13.

The processor 10 stores this display data in RAMII, reads out one screen worth of display data, and transfers it to the screen memory 14.

If multi-window display is instructed at this time, the processor 10 divides the area of the screen memory 14 into window areas and writes specified display data in each window area.

The display control circuit 15 scans the screen memory 14 and reads display data. This display data is then converted into a video signal, and sent along with horizontal and vertical synchronizing signals to the display section 16 via the signal line 19 for display.

That is, the windows 3 and 4 are displayed on the display screen 2 of the display device 1 as shown in FIG.

When the processor 10 receives an input signal from the keyboard 18, for example, an input signal specifying the window 3 to change the brightness of the window 3, it controls the display control circuit 15 to change the brightness of the window 3, as shown in FIG. 2(b). Vertical direction A of window 3
, A' and the horizontal direction B, B'', the signal v is generated only when scanning within the window 3 area.
A screen designation signal is sent through A20, and the switch 17 is closed.

When the switch 17 is closed, as shown in FIG. 2(a), a variable resistor 6 provided separately from the variable resistor 5 is connected to the brightness adjustment circuit of the display section 16 during this time, so this variable resistor is adjusted. By doing so, the brightness can be adjusted only within the window 3 area separately from other screen areas.

〔Effect of the invention〕

As described above, in the case of multi-window display, the present invention allows the brightness of display data within a specific window to be adjusted separately from display data in other screen areas.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a circuit showing an embodiment of the present invention, FIG. 2 is a diagram explaining the operation of FIG. 1, and FIG. 3 is a diagram explaining an example of a conventional display device. In the figure, engineering is a display device, 2 is a display screen, 3.4 is a window, 5.6 is a variable resistor, 10 is a processor,
11 is RAM. 12 is a ROM, 13 is an interface circuit, 14 is a screen memory, 15 is a display control circuit, 16
17 is a display section, 17 is a switch, and 18 is a keyboard. (Kunmo 1 map @伜 and 圀茅 2 which is already 13 months old)

Claims (1)

[Scope of Claims] In a display device capable of displaying multiple windows, means (15) for sending a screen designation signal indicating that the screen is within a designated window area on a screen memory (14); and means (17) for connecting a brightness adjustment variable resistor (6) to a brightness adjustment circuit of the display section according to a signal, while reading display data of the designated window area from the screen memory (14); A window brightness adjustment method characterized in that the brightness adjustment variable resistor (6) is connected to the brightness adjustment circuit.