JPH06250604A - Led display device - Google Patents

Abstract

PURPOSE:To make the scroll display easy to see. CONSTITUTION:In this LED display, when a fixed background screen and scroll data are simultaneously displayed on an LED display panel 3, by fetching the coordinate information of a scroll display part from a CPU 7 for scroll display by means of a CPU 5 for fixed display, subjecting the relevant part to the processlug of black void display and displaying the scroll display data processed for display on this part by means of the CPU 7 for scroll display, the scroll display is made easy to see so that the fixed background screen and the scroll display data do not simultaneously turn on the LEDs of different colors on the same position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display device which is installed in a station, for example, and is used as a passenger guide display device for providing various information to passengers.

[0002]

2. Description of the Related Art Conventionally, L, which is installed in a station, for example, is used as a passenger guide display device for providing various information to passengers.
In the ED display device, when a background screen is fixedly displayed on the LED display panel and various guide character information is scrolled and displayed thereon, a fixed display CPU for performing fixed display data display processing of the fixed background screen, and scroll display data. 2 CPs with CPU for scroll display that performs display processing of
Equipped with U, the scroll display CPU creates scroll display data for variably adjusting the scroll speed or increasing or decreasing the number of scroll screens, and the fixed display CPU displays the fixed background screen display data. And mechanically superimposing these display data and outputting them to the LED display panel to provide various information while scroll-displaying on a fixed background screen.

[0003]

However, such a conventional LED display device has the following problems. That is, the fixed display CPU and the scroll display CPU create display data independently of each other without being aware of mutual display data, and mechanically superimpose them on each other.
In order to output to the display screen of the D display panel, especially LED
In a portion where the fixed background screen and the scroll display screen overlap on the display screen, the corresponding LEDs may be turned on at the same time based on both data on the LED display panel. Therefore, for example, in an LED display panel that displays orange by lighting both red and green LEDs at the same time, when the fixed background screen lights red and the scroll display data lights green, Red and green LEDs with overlapping lighting data
Lights up at the same time and is displayed in orange, which makes it difficult to see the scroll display data in some cases, or gives a strange feeling due to the spot difference in the scroll display color only in a specific portion.

The present invention has been made in view of the above-mentioned conventional problems. By operating the background screen of the scroll display portion, mutual interference is eliminated and scroll display is performed in such a manner as to give a strange feeling. It is an object of the present invention to provide an LED display device in which the scroll display is easy to see.

[0005]

An LED according to the invention of claim 1
The display device includes a scroll display CPU for displaying scroll display data, a fixed display CPU for displaying fixed display data, and a scroll display CPU.
In an LED display device including an LED display panel for simultaneously capturing and displaying the scroll display data processed by the above and the fixed display data processed by the fixed display CPU,
The fixed display CPU takes in coordinate information of the scroll display portion from the scroll display CPU and performs a blackout display process on the corresponding portion.

An LED display device according to a second aspect of the present invention is the LED display device according to the first aspect, wherein the CP for scroll display is used.
The U has a display processing function of taking in fixed display data of the scroll display portion from the CPU for fixed display, processing it, and combining it with the scroll display information to create new scroll display data.

[0007]

According to the LED display device of the invention of claim 1,
When the fixed background screen and the scroll data are simultaneously displayed on the display panel, the fixed display CPU takes in the coordinate information of the scroll display portion from the scroll display CPU, processes the corresponding portion in black, and scrolls on it. By displaying the scroll display data subjected to the display processing by the display CPU, it is possible to prevent the fixed background screen and the scroll display data from simultaneously lighting the LEDs of different colors, thereby making the scroll display easy to see.

In the LED display device according to the second aspect of the present invention, the scroll display CPU further takes in the fixed display data of the scroll data display portion from the fixed display CPU, performs appropriate processing, and superimposes it on the scroll display information. The display mode is diversified by using new scroll display data.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows a configuration of an embodiment common to the invention of claim 1 and the invention of claim 2, and a display data input device 1 for providing contents to be displayed by an LED display device, and this display data input device 1 A display controller 2 which receives display data from the display controller 2, analyzes the display data, and outputs the display data, and L which receives and displays the display output from the display controller 2.
It is composed of an ED display panel 3.

The display controller 2 receives the display data from the display data input device 1 and temporarily stores the display data, and the display data buffer 4
CPU 5 for fixed display for fetching data for fixed display from the CPU and processing the fixed display screen, and CPU for fixed display
5, the fixed display data buffer 6 for temporarily storing the fixed display data processed, the scroll display CPU 7 for taking out the scroll display data from the display data buffer 4 and performing the scroll display processing, and the scroll display CPU 7 for processing. A scroll display data buffer 8 for temporarily storing the scroll display data is provided.

Next, the operation of the LED display device having the above structure will be described. FIG. 2 is an operation flowchart, and FIG. 3 shows a display mode of the LED display panel 3. First, the display data input device 1 creates display data to be displayed on the LED display panel 3, and the display controller 2
Is input, the data is temporarily stored in the display data buffer 4 (step S1).

Then, the fixed display CPU 5 takes out only the data related to the fixed display from the display data stored in the display data buffer 4 (step S2).
Fixed background display data to be actually displayed is created from the extracted data regarding the fixed display (step S3).

On the other hand, the CPU 7 for scroll display fetches only the data relating to the scroll display from the display data buffer 4 (step S8), and creates the scroll display data to be actually displayed from the fetched data relating to the scroll display (step S9). From the scroll display data, the coordinate information of the scroll position and the range is notified to the fixed display CPU 5 (step S10).

Therefore, the fixed display CPU 5 checks whether there is scroll display data (step S
4) If it does not receive the information from the CPU 7 for scroll display, it judges that there is no scroll display, and outputs the fixed display data created up to that point to the fixed display data buffer 6 as it is.
The data is output to the D display panel 3 and fixedly displayed (step S
7).

However, the scroll display CPU 7
If the scroll display position and the coordinate data of the range are received from, it is determined that there is scroll display (step S4), and the corresponding portion of the fixed background display data created up to that point is blackened (step S5). The background data of the coordinate portion is transferred to the scroll display CPU 7 side (step S6), and then the fixed background display data subjected to the blackout processing is temporarily stored in the fixed display data buffer 6 and output to the LED display panel 3. Yes (step S7).

On the other hand, in the scroll display CPU 7, when the fixed background data of the scroll display portion is fetched from the fixed display CPU 5 to the scroll display portion, the display mode input by the operator through the display data input device 1 is designated. Corresponding to, the new scroll display data is created by OR logic of the fixed background data and the scroll display data, or the fixed background data is inverted and superimposed on the scroll display data to create new scroll data. Further, new scroll display data is created by AND logic, this is temporarily stored in the scroll display data buffer 8 and output to the LED display panel 3 (steps S11 and S12).

Thus, on the LED display panel 3, the fixed background display data created by the fixed display CPU 5 and the scroll display data created by the scroll display CPU 7 are mechanically superimposed and displayed. ,
In this case, as shown in FIG. 3, in the fixed background display data (a), the scroll display portion is blackened (b),
By superimposing the scroll display data (c) on this, it becomes possible to perform the scroll display (d) which does not interfere with the fixed background display.

The invention according to claim 1 is not limited to the above-described embodiment, and the CPU for scroll display does not have a function of taking in fixed display data of the scroll display portion and performing appropriate processing. Display data buffer 4
It may have only the function of taking out the scroll display data from and outputting it to the LED display panel 3.
In this case, the fixed display CPU 5 side simply performs the blackout processing on the scroll display portion of the fixed background display so that the fixed display data from the fixed display CPU 5 and the scroll display data from the scroll display CPU 7 are simplified. Even if they are overlapped with each other, the background of the scroll display portion becomes black, so that the fixed background display does not interfere with the scroll display and the scroll data can be displayed easily.

[0019]

As described above, according to the invention of claim 1,
When the fixed background screen and the scroll data are simultaneously displayed on the LED display panel, the fixed display CPU takes in the coordinate information of the scroll display portion from the scroll display CPU and processes the corresponding portion in black and displays it on top of it. Since the scroll display CPU displays the scroll display data that has been subjected to the display processing, unlike the conventional case, the fixed background screen and the scroll display data do not simultaneously turn on the LEDs of different colors at the same position, and the scroll display is performed. The data can be made easy to see, and only a specific part does not have a different color and does not give a strange feeling.

Further, according to the invention of claim 2, the scroll display CPU takes in the fixed display data of the scroll data display portion from the fixed display CPU and performs appropriate processing, and superimposes it on the scroll display information to newly scroll. Since the display data is used, the display mode of the scroll data can be diversified.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of a common embodiment of the inventions of claims 1 and 2. FIG.

FIG. 2 is a flowchart of a display processing operation of the above embodiment.

FIG. 3 is an explanatory diagram of a display processing operation of the above embodiment.

[Explanation of symbols]

 1 Display Data Input Device 2 Display Controller 3 LED Display Panel 4 Display Data Buffer 5 Fixed Display CPU 6 Fixed Display Data Buffer 7 Scroll Display CPU 8 Scroll Display Data Buffer

Claims (2)

[Claims] 1. A scroll display CPU for displaying scroll display data, a fixed display CPU for displaying fixed display data, scroll display data processed by the scroll display CPU, and the fixed display CPU. In the LED display device including an LED display panel that simultaneously captures and displays the processed fixed display data, the fixed display CPU takes in coordinate information of the scroll display portion from the scroll display CPU and displays the corresponding portion. An LED display device comprising a display processing function for displaying a black outline. 2. The LED display device according to claim 1, wherein the scroll display CPU is the fixed display CP.
An LED display device comprising a display processing function of taking fixed display data of a scroll display portion from U, performing processing, and combining with scroll display information to create new scroll display data.