JPS63236081A - Data display device - 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 The present invention relates to a data display device, and more particularly to a data display device capable of displaying multimedia information such as character data and graphics.

Prior Art Conventionally, in this type of data display device, it has been common practice to illuminate the background area of a display unit such as a CRT (black), and to illuminate the data structure driver 1. Since it is more similar to the display on commonly used paper, a black-and-white reversal display method in which the back area of the display units 1 to 1 is illuminated and the data structure dots are not illuminated is becoming widespread.

In the case of this data display method using black and white inversion, the size of dots that make up character data displayed on display units such as CRTs is becoming smaller and smaller as resolution improves and display unit sizes become smaller.
The brightly shining background area occupies most of the area, and this light may bleed into the black areas that make up character data, making the displayed data smudged or difficult to see. For this reason, we have changed the dots that make up character data, developed and adopted ones that have thicker black parts, lowered the resolution of the display dots, and increased the dot size to eliminate dirt on the display data and make it easier to see. I was trying to improve it.

When displaying data using a data display method using black and white inversion, such conventional data display devices have to change the character data structure dots, develop and adopt a device with thicker black parts, or display Lower the dot resolution,
Increase the dot size to eliminate dirt on displayed data,
Attempts have been made to improve the display so that it is easier to read, but low-priced and small display units such as CRTs have low display resolution, making it difficult to make changes such as making the dots that make up characters such as kanji thicker.

The present invention has been made to eliminate the drawbacks of the conventional ones as described above, and it is possible to eliminate blurring in bright dot areas and enlarge non-bright dot areas, making them clearer and easier to see. The purpose is to provide a data display device that can.

Structure of the Invention A data display device according to the present invention is a data display device that displays data using a plurality of display dots, and includes a detection means for detecting a temporal continuity state of bright dots and non-bright dots, and said detection means. The brightness dot and the non-1iiiir! J, changing means for changing the brightness level difference between the dot and the dot.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, a data display device according to an embodiment of the present invention includes a main control section 1 that controls the device, a keyboard 2, and a memory 3 in which software that operates on the main control section 1 and various data are stored. , a video memory write control section 4, a character pattern storage section 5, a video memory 6, a brightness boundary detection section 7 that checks and detects the brightness boundary portion of the character pattern, and changes the brightness of the brightness dots at the brightness boundary portion. a brightness adjustment section 8, a display interface section 9, and a C
It is composed of an RTIO and a brightness level setting section 11 that can arbitrarily specify a brightness level.

Data input from the keyboard 2 is processed by the main control unit 1 according to instructions from software stored in the memory 3. The data processed by this main control unit 1 is C
The data is transferred to the video memory write control unit 4 for display on RTlo.

When the video memory write control unit 4 receives this data,
A character pattern corresponding to the data is read from the character pattern storage section 5 and written into the video memory 6.

The brightness boundary detection section 7 reads the character pattern data from the video memory 6 and detects brightness boundary dots whose constituent dots change from non-brightness dots to brightness dots. When a luminance boundary dot is detected by the luminance boundary detection section 7, the luminance adjustment section 8 is notified of the target luminance dot adjacent to the non-luminance dot and which is the subject of luminance adjustment.

- The brightness adjustment unit 8 changes the brightness of the notified target brightness dot to the brightness specified by the brightness level setting unit 11, and then
It is displayed on the CRTlo via the display interface unit 9. Furthermore, pattern dots other than the target brightness dots are displayed on the CRT lo via the display interface unit 9 with the same brightness, regardless of the difference between the five types of brightness dots and non-brightness dots.

FIG. 2 is a diagram for explaining in detail the operation after the brightness boundary detection section 7 in FIG. 1.

FIG. 3 is a diagram showing the brightness level of display data dots. Figure 3(a) shows the normal display, where the data dot row A
, B, D, and E represent non-bright dot rows, and data dot row C represents a bright dot row.

Figure 3(b) shows the case of reverse display, where data dot rows A,
B, D, and E represent bright dot rows, and data dot row C represents a non-bright dot row. FIG. 3(C) shows a case of inverted display with brightness adjustment according to an embodiment of the present invention, where data dot rows A, B, and E represent bright dot rows, and data dot row C represents a non-bright dot row. The data dot array indicates a luminance dot array on which luminance adjustment has been performed.

The detailed operation of one embodiment of the present invention will be explained using these FIGS. 1 to 3.

The character pattern data 21 read from the video memory 6 is transferred to a luminance boundary detection circuit 22 and a video data delay circuit 23.

The luminance boundary detection circuit 22 examines the character pattern data 21, and if luminance dots or non-luminance dots continue (data dot row A shown in FIG. 3(b)).

In case B), the control signal 24 is set to logic "0" and the video data control gate 28 is opened via the signal inversion gate 26. At the same time, since the control signal 24 is logic "0", the video data control gate 29 is closed.

As a result, the character pattern data 25 delayed by one dot in the video data delay circuit 23 is transferred to the video data control gate as it is (as in the data dot rows A and B shown in FIG. 3(C)) without changing the brightness. 28, a video data synthesis gate 30, and a video data amplification circuit 31.
Displayed on TIO.

On the other hand, when detecting a change boundary of brightness dots in the character pattern data 21, for example, a change from a non-brightness dot to a brightness dot (not shown in Fig. 3Cb), in the case of data dot rows C and D), The control signal 24 is set to logic "1" and the video data control gate 2 is output via the signal inversion gate 26.
At the same time, video data control game 1 is closed.
~Open 29.

By opening the video data control gate 29, the character pattern data 25 delayed by one dot in the video data delay circuit 23 is changed so that the brightness dot adjacent to the non-brightness dot is changed to the brightness level setting section by the brightness change circuit 27. 1
The brightness is adjusted to the brightness level specified in step 1 (Figure 3 (C)
(like the data dot rows C and D shown in FIG. 1), the data is displayed on the CRTlo through the video data control gate 29, the video data synthesis gate 30, and the video data amplification circuit 31.

In this way, when the luminance boundary detection section 7 detects the temporal continuity between the luminance dots and the non-luminance dots, the luminance adjustment section 8 changes the luminance level difference between the luminance dots and the non-luminance dots. By doing so, it is possible to eliminate blurring in bright dot areas and enlarge non-bright dot areas. As a result, the display of character data can be made clearer and easier to see, and eye fatigue can be reduced.

In one embodiment of the present invention, a case has been described in which a luminance dot that changes from a non-luminance dot to a luminance dot is used as a target luminance dot. The immediately preceding luminance dot may be used as the target luminance dot, or both the luminance dots immediately before and after the non-luminance dot may be used as the target luminance dots. It is clear that this can be easily achieved by doing the following.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, when the temporal continuity of bright dots and non-bright dots is detected, the brightness level difference between these bright dots and non-bright dots 1 to 1 is changed. By doing so, it is possible to eliminate blurring in the bright dot area, and the non-bright dot area can be made larger, making it clearer and easier to see.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a diagram for explaining in detail the operation after the brightness boundary detection section 7 shown in FIG. 1, and FIG. FIG. 3 is a diagram showing brightness levels. Explanation of symbols of main parts 7...Brightness boundary detection section 8...Brightness adjustment section 11...Brightness level setting section 22...Brightness boundary detection circuit 23 ......Video data delay circuit 27...Brightness change circuit

Claims (1)

[Claims] A data display device that displays data using a plurality of display dots, the device further comprising a detection means for detecting temporal continuity between bright dots and non-bright dots; A data display device comprising: changing means for changing a brightness level difference between a non-brightness dot and a non-brightness dot.