JPS6115432B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display system such as a plasma display panel.

As is well known, a plasma display panel (hereinafter abbreviated as PDP) displays characters, symbols, etc. by generating a discharge in a discharge space formed at the intersection of two intersecting electrode groups, and is used as a terminal device in a computer system, for example. used. PDP
When applying this to the data terminal device and using it as a guidance display or data display section, generally the applicable
A lamp display section is installed below the PDP. This lamp display section displays various modes, such as training mode, online mode, offline mode, etc. When one of these modes is designated, the lamp in the area corresponding to this mode lights up.
The lamp display section that displays this kind of information is important for the operation of a computer system, but
Since this is performed using light emitting means such as LEDs or lamps, it naturally has to be constructed separately from the PDP main body, which has the drawback of increasing the display area of the terminal device and increasing costs.

It is therefore an object of the present invention to eliminate the above-mentioned drawbacks.
The purpose of this project is to propose a display method for PDP.

In accordance with the above object, the present invention is characterized in that the message display area in the PDP main body is also used as a mode display area, and the conventional lamp display section is eliminated.

The present invention will be explained below with reference to the drawings.

FIG. 1 is a plan view showing the configuration of a general PDP. In this figure, the PDP 10 consists of an operation guidance display area 11 for displaying normal data, a message display area 12 for displaying messages, a mode display section 13, and a mode type stamp section 14. Among these, the mode display section 13 is composed of LEDs, lamps, etc., and when one section of them lights up (indicated by hatching in the figure), the mode type A on the mode type marking section 14,
B, C... It is known that mode C among Y and Z has been instructed. Note that mode types A, B, C...Y,
Z distinguishes, for example, the aforementioned training mode, online mode, offline mode, etc. On the other hand, operation guidance display area 11
The latter of the PDP main bodies consisting of a message display area 12 displays a message such as "I don't know what to do". Of course, these characters are represented by dot pattern discharge light emission on the PDP.

As is clear from the configuration in Figure 1, the conventional
In the PDP 10, a mode display section 13 consisting of a lamp display that emits light using a mechanism different from that of the PDP is provided separately from the PDP main body. As a result, the effective area of the PDP body, particularly the operation guidance display area 11, has been reduced, and costs have also increased.

Therefore, in the present invention, first, the lamp light emission of the mode display section 13 is made to be shared with the discharge light emission of the PDP main body, and this is also made to be shared by the discharge light emission of the message display area 12. Therefore, the present invention
The PDP20 is as shown in Figure 2, and the conventional operation guidance area 11 (Figure 1) is as shown in Figure 21.
Increase its effective area as follows. Furthermore, the conventional message display area 12 (Fig. 1) is as shown in Fig. 22.
Also displays the mode. That is, mode A
When specified, the message display area of the corresponding part emits light as shown in 22'.

Now, in FIG. 2, a problem arises when the character display in the message display area 22 and the mode display overlap. In this case, for example, if mode C is specified, the light emission of the character "n" in that part is completely erased by the light emission of mode C. This is because the discharge light emission of the character "n" and the discharge light emission of mode C display are exactly the same light emission phenomenon, and there is no distinction between the two. Therefore, in the present invention, in such a case, the section including the character "n" (display section of mode C) is displayed in reverse. In other words, the character "n" is displayed negatively. In this way, as shown in this figure, the character “N” will be displayed as a punch-out, and the mode C
It will not be erased by the display, and the message display "Anonymous" can be read normally.

The above-mentioned negative display can be easily performed by program processing on software, but if you want to perform this negative display using hardware, the third
It will look like the figure. In this figure, numeral 31 is the main body of the PDP, which includes a column driver 32 for a group of column electrodes, a row driver 33 for a group of row electrodes, a column buffer memory 34 and a row buffer memory 35 for supplying display data to these drivers. These buffer memories are supplied with matrix dot data for displaying each character by a character generator 36. Which character should be displayed is instructed by the CPU (central processing unit). 37 is a timing generation circuit. In such a configuration, when executing the negative display essential to the present invention, mode C is selected from the CPU.
and the character "n" are received through line L. Based on this matching information, gate circuits 38 and 39
control and perform negative display. The gate circuits 38 and 39 have the same configuration, and depending on the presence or absence of the coincidence information, the bit output from the character generator 36 is inverted or not inverted and is output directly to each buffer memory 34, 3.
Supply to 5. For example, the configuration of the gate circuit for one data line is shown in FIG.
Note that the same applies to other data lines.
In FIG. 4, the bit output from the character generator 36 is input to an AND gate 42 and to an AND gate 41 through an inverter 43, respectively. The matching information from line L is also sent to AND gate 41 and to inverter 4.
4 to the ANDGATE 42. Therefore, when there is no matching information (logic "0"), the bit output from the quiractage generator 36 is inputted as is to the corresponding buffer memories 34, 35 through the AND gate 42 and the OR gate 45. On the other hand, when there is matching information (logic "1"),
The inverter 43 inverts the bit output from the character generator 36 for negative display.
The bit output added by
1, input to the corresponding buffer memories 34 and 35 through the OR gate 45.

Although the above explanation has been made on the premise of a PDP, it goes without saying that the idea of the present invention can be directly applied to a CRT display and the like.

As described above, according to the present invention, it is possible to realize a novel display method that has the derivative effect of increasing the effective area of the operation guidance display area at low cost.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the configuration of a general PDP, Figure 2 is a plan view showing the configuration of a PDP according to the present invention, and Figure 3 is an example of a circuit when realizing the display method of the present invention with hardware. A block diagram showing the
It is a circuit diagram showing a part of gate circuits 38 and 39 in the figure. In the figure, 14 is a mode type stamping part, and 20 is a
PDP, 21 is operation guidance display area, 22 is message display area, 31 is PDP
Main body, 32 is a column driver, 33 is a row driver, 3
4 is a column buffer memory, 35 is a row buffer memory, 36 is a character generator, 38, 39
is a gate circuit.

Claims (1)

[Claims] 1. An operation guidance display area for displaying data, a message display area for displaying various messages, a mode display area for displaying one of the various modes, and a stamp for each mode type corresponding to the mode display area. The display device is equipped with a mode type stamping section that emits display light at a predetermined mode position recorded in the mode type stamping section within the mode display area, and emits light for the message character and displays the mode. A display method characterized in that when the message characters overlap with the light emission, the message characters are displayed in a negative light emission display.