JP2001056660A - Display device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a display device which has improved maintainability and safety such as updating a display program, and has reduced costs. SOLUTION: When display data and a display program are transmitted to a transmission / reception unit, the display data and the display program are automatically stored in a storage unit, and the display data is displayed by executing the display program stored in the storage unit. Was displayed in the section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying characters, figures, and the like on a display unit by emitting light.

[0002]

2. Description of the Related Art A conventionally known LED display device which emits a plurality of light-emitting elements to emit light of character or graphic information and stores a display program and a control program in advance in an EPROM which is a storage unit in the display device body. For display data such as characters or graphics, a memory card written by an editing device such as a personal computer is inserted into a socket provided in the display device, and sequentially read from the memory card according to a display program and displayed on a display unit. Or the display data written in the memory card is written into a flash memory, which is a storage unit in the display device, and sequentially called from the flash memory according to a display program and displayed on the display unit. In most cases, such a display device is installed at a high place outdoors so as to be exposed to an unspecified number of people. Also,
Some display data is transmitted to a remote display device using a communication line such as a telephone line and displayed on a display unit.

[0003]

In such a conventional display device, when updating the display program stored in the EPROM, the housing of the display device main body is opened and the EPROM on the substrate in the display device main body is replaced with a new one. The maintenance of the display device installed at a high place is very time-consuming and troublesome, and also involves danger. Also, replacement EPROMs for the number of display programs to be updated must be prepared, which is very costly. Further, the display data at a remote location can be updated by using a communication line to update the display data, but the display program is updated by opening the display device body and opening the display device body as in the above display device. The EPROM on the board had to be replaced with a new one, and it was necessary to go to the site. According to the present invention, there is provided a display device in which maintenance and safety such as updating of a display program are improved and cost is reduced.

[0004]

A transmission / reception unit for communicating display data and a display program with an editing device, a storage unit for storing display data and a display program received by the transmission / reception unit, and a character or graphic stored in the storage unit A display unit that displays display data such as a plurality of light emitting elements by emitting light, a display program transmitted from the editing device and a display program are written into a predetermined area of the storage unit, and the display program stored in the storage unit is controlled. A control unit for performing execution control, wherein when the display data and the display program are transmitted to the transmission / reception unit, the display data and the display program are automatically stored in the storage unit, and the display program stored in the storage unit is executed. The display data is displayed on the display unit.

The control unit further includes a reception detection unit for detecting whether the display data and the display program have been transmitted to the transmission / reception unit. When the reception detection unit detects the transmission of the display data and the display program, reception is performed. It is desirable to start and write the received display data and display program to the storage unit, and when the writing to the storage unit ends, output an execution instruction to the display program written to the storage unit.

[0006] Further, a content discriminating section for discriminating whether the content transmitted to the control section is a display program or display data is provided, and the display program is stored in a predetermined area of the storage section according to the content discriminated by the content discriminating section. Alternatively, it is desirable to write display data.

Further, the identification code is given to the display program and the display data by the editing device, and the identification code of the display program and the display data transmitted to the control unit and the display program and the display data stored in the storage unit are stored. A comparison unit for comparing and discriminating between the identification code and the display code, and determines whether the display program and the display data transmitted by the comparison unit need to be updated, and displays the data in a predetermined area of the storage unit only when the update is necessary. It is desirable to write a program or display data.

Further, the control unit includes a program detecting unit for detecting whether or not the display program and the display data are stored in the storage unit, and the display program or the display data is not stored in the program detecting unit. Upon detection, it is desirable to transmit a predetermined signal to the editing device.

An execution program area for storing a display program and display data for displaying the area of the storage section on the display section, and a temporary storage for storing the data area and the display program and display data transmitted from the editing device. Dividing into a program area and a data area, storing the display program and the display data transmitted from the editing device in the temporary storage area, and moving the display program from the temporary storage area to the execution area when the display program in the execution program area ends. It is desirable that the display program and the display data be updated at the same time.

[0010]

According to the present invention, an EPR like a conventional display device is used.
Instead of storing the display program in advance in the OM, the storage program in the display device body is stored using a communication line,
Since the display data is displayed on the display unit by executing the display program stored in the storage unit, when the display program is updated, the casing of the display device body is opened and the EPROM of the substrate in the display device body is replaced with a new one. Eliminates the need to replace the display device, safely and easily updates display programs on display devices installed at high altitudes, and updates display programs without going to remote display devices And can be.

Further, it is not necessary to prepare a new EPROM to be used for replacement, and the cost of the replacement EPROM can be reduced.

Further, by providing a reception detecting section and a content discriminating section, the editing apparatus only transmits display data or a display program to the display apparatus. Since the writing is performed in the area, the display program or the display data can be automatically updated.

Further, a comparison unit is provided, which compares the transmitted identification codes of the display program and the display data with the identification codes of the display programs and the display data stored in the storage unit and determines that the update is necessary. By performing only the update, it is possible to prevent the update when the wrong display program or display data is transmitted.

In addition, a program detection section is provided, and when either the display program or the display data is not stored in the storage section, a predetermined signal is transmitted to the editing apparatus in accordance with the content not stored. Did
The editing device can recognize a display device installed at a high place or a display device installed at a remote place.

Furthermore, an execution program area for storing a display program and display data for displaying the storage section on the display section, a data area and a temporary storage program for storing the display program and display data transmitted from the editing device. By dividing the display program and display data transmitted from the editing device into a temporary storage area and moving the display program of the execution program area from the temporary storage area to the execution area at the end of the display program, Since the display program and the display data are updated, the updating operation can be performed without interrupting the display on the display unit even when the display program or the display data is transmitted during the execution of the display program.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view according to an embodiment of the present invention.
FIG. 3 is a block diagram according to the embodiment of the present invention, and FIG. 3 is a flowchart according to the embodiment of the present invention.

An embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes an editing device for creating a display program for controlling output of display data in accordance with commands such as display data such as characters or graphics, display forms such as scrolling and reverse display of display data accompanying display data, and display times of display data. Reference numeral 2 denotes a communication line such as a telephone line for transmitting and receiving display data and a display program. Reference numeral 3 denotes a display unit 4 formed by an LED panel in which light emitting diodes (LEDs) are arranged in a matrix. A transmission / reception unit 5 such as a modem for communicating display data and a display program, a flash memory 6 serving as a storage unit for storing the display data and the display program received by the transmission / reception unit 5, and a display data / display program to the flash memory 6 Performs write control and executes the display program stored in flash memory 6 A display device having a control unit 7 for control.

The control unit 7 includes a reception detection unit 8 for detecting whether display data or a display program has been transmitted to the transmission / reception unit 5, and a content determination for determining whether the transmitted content is a display program or display data. A comparing unit 10 for comparing and discriminating the transmitted identification codes of the display program and the display data with the identification codes of the display programs and the display data stored in the flash memory 6; and storing the display program and the display data in the flash memory 6. A program detecting unit 11 for detecting whether or not the program has been executed is provided.

The identification code is individually given by the editing device 1 such as a personal computer or the like that creates the display data and the display program, and is used to determine whether the data is the display program or the display data when the comparison unit 10 performs the comparison determination. Then, it is determined whether the display program and the display data need to be updated.

The flash memory 6 is divided into a display program for execution, a program area for storing display data, a display data area and a display program for temporary storage, a program area for storing display data, and a display data area. After the display data and the display program transmitted by the communication line 2 are stored in the temporary storage area, the display data and the display program are moved to the execution area according to the execution instruction of the control unit when the display program in the execution area ends.

Next, the display operation will be described with reference to the flowchart of FIG. The control unit 7 detects whether or not the display program or the display data has been transmitted from the editing device 1 to the transmission / reception unit by the reception detection unit 8, and at the same time, the program detection unit 11 stores the display program and the display program in the execution area of the flash memory 6. It detects whether or not the display data is stored, and issues a command according to each detection result. When the transmission of the display program or the display data is detected based on the detection result of the reception detection unit 8, the content determination unit 9 determines whether the transmitted content is the display program or the display data, and displays the transmitted display. Identification code of program or display data and flash memory 6
The comparison unit 10 compares the identification code of the display program or the display data stored in the execution area in the memory, and if it is determined that the update is necessary, writes the display program or the display data in the temporary storage area in the flash memory. I do. When the display program in the execution area ends, the control unit 7 moves the display program or display data written in the temporary storage area to the execution area in the flash memory 6. When the movement of the display program or the display data is completed, the control unit 7 outputs an execution instruction to the display program in the execution area. The display program which has received the execution instruction executes the program, calls display data from the execution area in the flash memory 6 in accordance with a display schedule command such as a display time of display data attached to the display data, and a display form such as scrolling or reverse display. The output of the display data is controlled in accordance with this command, and the display is displayed on the display unit 4.

When the transmission of the display program or the display data is not detected in the detection result of the transmission / reception detection unit 8, an execution instruction is output to the display program in the execution area in the flash memory 6 to execute the execution. The display program that has received the instruction executes the program, calls display data from the execution area in the flash memory 6 in accordance with a display schedule command such as the display time of the display data attached to the display data, and executes a display form such as scrolling or reverse display. The output of the display data is controlled in accordance with the command, and is displayed on the display unit 4. However, when the program detection unit 11 detects that either the display program or the display data is not stored in the execution area in the flash memory 6, the temporary storage area is detected and executed in the temporary storage area. If there is a display program or display data detected not to be stored in the execution area, the display program is moved from the temporary storage area to the execution area, and the display program that receives the execution instruction executes the program and attaches the display data. Flash memory 6 according to a display schedule command such as display time of display data.
The display data is called out from the execution area in the inside, the output control of the display data is performed in accordance with the command of the display form such as scrolling or reverse display, and the display is displayed on the display unit 4. If there is no display program or display data detected in the temporary storage area that is not stored in the execution area, a predetermined error signal defined in the display program and the display data is sent to the editing device 1. A notification is sent to the user that the display program or display data is not stored in any area in the flash memory 6.

In the present embodiment, the display unit 3 is described as a panel formed of LEDs, but is not limited to this, and may be a liquid crystal panel or the like.

[0024]

According to the present invention, a display program is not stored in advance in an EPROM as in a conventional display device, but is stored in a storage unit in a display device main body using a communication line, and is stored in the storage unit. The display data is displayed on the display unit by executing the display program that has been executed. Therefore, when the display program is updated, the operation of opening the housing of the display device body and replacing the EPROM of the substrate in the display device body with a new one is performed. The display program of a display device installed at a high place can be safely and easily updated, and the display program can be updated without going to a remote display device.

Further, there is no need to prepare a new EPROM to be used for replacement, and the cost of the replacement EPROM can be reduced.

Further, by providing a reception detecting section and a content discriminating section, the editing apparatus only transmits display data or a display program to the display apparatus. In this case, the display program or the display data can be automatically updated.

Further, when a comparison unit is provided, the identification code of the transmitted display program and display data is compared with the identification code of the display program and display data stored in the storage unit, and it is determined that updating is necessary. By performing only the update, it is possible to prevent the update when the wrong display program or display data is transmitted.

Further, a program detection section is provided, and when either the display program or the display data is not stored in the storage section, a predetermined signal is transmitted to the editing apparatus in accordance with the content not stored. Did
The editing device can recognize a display device installed at a high place or a display device installed at a remote place.

Further, an execution program area for storing a display program and display data for displaying the storage section on the display section, a data area and a temporary storage program for storing the display program and display data transmitted from the editing device. By dividing the display program and display data transmitted from the editing device into a temporary storage area and moving the display program of the execution program area from the temporary storage area to the execution area at the end of the display program, Since the display program and the display data are updated, the updating operation can be performed without interrupting the display on the display unit even when the display program or the display data is transmitted during the execution of the display program.

As described above, it is possible to provide a display device with improved maintainability such as updating a display program and reduced cost.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram according to an embodiment of the present invention.

FIG. 2 is a block diagram according to an embodiment of the present invention.

FIG. 3 is a flowchart according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 editing device 2 communication line 3 display device 4 display unit 5 transmission / reception unit 6 flash memory 7 control unit 8 reception detection unit 9 internal determination unit 10 comparison unit 11 program detection unit

Claims (6)

[Claims] 1. An output control of display data according to a command such as a display mode such as scrolling and reverse display of display data such as characters or graphics created by an editing device, display data accompanying display data, and a display time of the display data. Is transmitted to the display device using a communication line, and
In a display device that performs display according to the transmitted display data and display program, a transmitting and receiving unit that performs communication between the editing device and the display data and display program, and a storage unit that stores the display data and the display program received by the transmitting and receiving unit. A display unit for displaying display data such as characters or figures stored in the storage unit by causing a plurality of light emitting elements to emit light, controlling display data and a display program transmitted from an editing device to a predetermined area of the storage unit; And a control unit for controlling execution of the display program stored in the storage unit, and automatically storing the display data and the display program in the storage unit when the display data and the display program are transmitted to the transmission / reception unit. As described above, by executing a display program stored in the storage unit, the display data is Display device and displaying the radical 113. 2. The control unit further includes a reception detection unit that detects whether display data and a display program have been transmitted to the transmission / reception unit, and transmission of the display data and the display program is detected by the reception detection unit. Receiving the display data and the display program, writing the received display data and display program to the storage unit, and outputting an execution instruction to the display program written to the storage unit when the writing to the storage unit is completed. Item 2. The display device according to Item 1. 3. A storage device according to claim 1, further comprising: a content discriminating unit for discriminating whether the content transmitted to said control unit is a display program or display data, and a predetermined area of said storage unit according to the content discriminated by said content discriminating unit. 3. The display device according to claim 1, wherein a display program or display data is written to the display device. 4. The display program and the display data are provided with an identification code by the editing device, and the display program transmitted to the control unit, the display data identification code, the display program stored in the storage unit, A comparison unit for comparing and discriminating the identification code of the display data with the display unit; determining whether the display program and the display data transmitted by the comparison unit need to be updated; 4. The display device according to claim 1, wherein a display program or display data is written in the area. 5. The control unit further includes a program detection unit that detects whether a display program and display data are stored in the storage unit, and the program detection unit does not store the display program or the display data. The display device according to claim 1, wherein a predetermined signal is transmitted to the editing device when this is detected. 6. An execution program area for storing a display program and display data for displaying an area of the storage unit on the display unit, a data area, and a display program and display data transmitted from the editing device. The display program and display data transmitted from the editing apparatus are divided into a temporary storage program area and a data area, and the display program and display data transmitted from the editing device are stored in the temporary storage area. 6. The display device according to claim 1, wherein the display program and the display data are updated by moving the display device.