KR19980086357A - System for checking the operating status of the electric sign board in operation and its inspection processing method - Google Patents

Abstract

The present invention relates to a system for checking an operating state of an electric signboard and a method for processing the same. In the related art, a matrix pixel checking means of an electric signboard is inspected while affecting the display form of the signboard. There was a problem in accurately understanding the traffic state information transmitted, and on the other hand, since it was not possible to scientifically manage data management of the failure of matrix pixels occurring in a plurality of billboards, the maintenance, maintenance, handling and management of such billboards It was against.

The present invention is provided in the display control unit 3 of the display panel 5, and when the display data is transmitted to the display unit unit 4 under the control of the microprocessor 31 of the display control unit 3, the display unit unit 4 The display state data receiving processing unit 1 for temporarily storing the display state data detected by the microprocessor 31 and transmitting the stored state data to the microprocessor 31; and the dot pixel during display operation in the display unit unit 4 provided in the display unit unit 4 The operating state checking system of the operation of the electric sign of the configuration including the display state data transmission processing unit 2 which provides the display state data receiving processing unit 1 with the state data detected when the abnormal state is detected, To provide.

Description

System for checking the operating status of the electric sign board in operation and its inspection processing method

The present invention relates to a system for checking the operating state of a display panel in display operation and a method for checking the same.

The display board is designed to display various characters / graphics by arranging color LEDs (LEDs) or small fluorescent tubes, which are direct light emitting elements, in a matrix, and display data of the various characters / graphics. The host transmits to the electronic display board, which is a terminal display device, and performs advertisements such as various guides and promotions.

In one example, a typical type of such a signboard system is shown in FIG.

Here, a host computer 8 which edits display data to be transmitted to the display board 7 side in which a plurality of display modules 5 are collected, and transmits it to the main controller 6 on the display board 7 side, and the host computer. A main controller 6 which temporarily stores the display data transferred in (8) in the memory and transmits and controls the display data signals assigned to the plurality of display modules 5, and under the control of the main controller 6; It consists of a display module 5 which displays the display data transmitted from (8).

In addition, the display module 5 receives the display data transmitted from the main controller 6, and then displays the display control unit 3 for driving control of the display elements integrated in the display unit unit 4, and the display control unit ( It consists of a display unit section 4 for displaying the display data allocated under the control of 3) to the display element.

In addition, as shown in FIG. 2, the display control unit 3 of the display module 5 includes a display control microprocessor 31 and a red memory RR for temporarily storing red and green display data, respectively. RAM) and green memory (GR), and a rad and green comparator provided to the data line transceiver 36 after adjusting to an appropriate luminance signal by the brightness control signal BR provided from the microprocessor 31. 34, 35, a data line transceiver 36 for transmitting the outputs of these rad and green comparators 34, 35 to the display unit section 4, a control signal transceiver 37 for transmitting control signals, and the like. have.

The display unit unit 4 further includes a line receiver 41 which receives display data and control signals from the data line transceiver 36 and the control signal transceiver 37 of the display control unit 3, and the line receiver. An S / R shift register 41 for converting the serial display data provided at (41) into parallel display data and an output of the S / R shift register 41 form a display element in matrix form. It consists of a pixel drive part 43 which drives the dot pixel of the display part 45 arrange | positioned in this way, and the current limiting part 44 which limits the display element current provided from this pixel drive part 43, etc. As shown in FIG.

In the conventional electronic display system, in order to check whether the display element of the display unit unit 4 has a failure or an abnormality in the circuit during the display operation, the main controller 6 side of the display control unit 3 When the microprocessor 31 provides the dot / off data for sequentially turning on / off each dot pixel, the microprocessor 31 drives the indicator 45 of the display unit unit 4 for a short time set arbitrarily. Was.

In addition, this inspection operation is a road sign that the current road situation is bad because the microprocessor 31 sequentially turns on and turns off all the dot pixels for a predetermined time while displaying the letter as shown in FIG. 3A. As the above operation for the signboard inspection operation is performed in the state of displaying, the driver traveling on the road has a problem of properly capturing the above phrase instantly.

In addition, as described above, since the time at which the driver views the signboard is instantaneous in relation to the speed of the vehicle according to the high speed driving, it is difficult to avoid confusion or misrecognition of the phrase when the phrase is not accurately expressed.

In addition, when there is a problem in the electronic display board as usual, not in the inspection process as described above, the letter that should be displayed on the road as shown in FIG. 3A does not display the upper part of the letter “J” as shown in FIG. Because of the lack of communication, this phenomenon needed to be identified and acted upon promptly and immediately.

However, in the past, there is no means for automatically checking for any abnormality in the display board without affecting the specific text of the display board in the state of displaying the display of the display board. This was followed.

In addition, there is a lack of means for scientific management methods such as checking the status of a specific signboard occasionally or regularly and obtaining and using management data of frequently failed places. It is not desirable from the side.

SUMMARY OF THE INVENTION An object of the present invention is to provide a system for easily identifying a failure state of each display board at a host computer without affecting the display contents of the specific text in a state in which a plurality of display boards installed on each road are currently expressing a specific text. It is to make it easy to perform the inspection work.

Another object of the present invention is to store the fault data of each signboard in a database in the host computer, and to obtain a probability of failure of a specific signboard and a specific point of the signboard based on the database, and thereby check the signboard and It is to manage management scientifically and efficiently.

The present invention is particularly provided in the display control unit of the display board display module so that the display data is transmitted to the display unit unit under the microprocessor control of the display control unit so that the display state data detected by the display unit unit may be temporarily stored. A display state data receiving processor for transmitting to the processor side, and display state data provided to the display unit to provide the display state data receiving processor with state data detected when a dot pixel is in an abnormal state during display operation in the display unit. It is a feature of the system for checking the operating state of an operation of an electric signboard including a transmission processing unit.

According to another aspect of the present invention, there is provided a system in which a microprocessor stores display state data provided by a display state data transmission processing unit in a display state data memory and performs a check operation or processes a display pattern state on a host computer side. Display inspection The inspection processing method of the operation state inspection system of the operation board which is performed with the main program.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a system schematic diagram of a conventional road-mounted billboard system

FIG. 2 is a system circuit block diagram of a display control unit and a display unit unit of the display module of FIG. 1.

3A is a reference diagram showing a state in which the display state is normally displayed in the system

Figure 3b is a reference diagram showing a state in which the display state is abnormally displayed in the system

Figure 4 is a circuit block diagram of an embodiment of a display module equipped with an operating state checking means of the present invention

5 is a view illustrating an embodiment of a display state detector provided in the display unit of FIG. 4.

Figure 6a is an embodiment of a display check main program of the present invention

Figure 6b is an embodiment of a transmission and reception processing program of the present invention

Figure 6c is an embodiment of a timer interrupt program of the present invention

* Explanation of symbols for main parts of the drawings

1: Display state data receiving processing unit 2: Display state data transmitting processing unit

3: Display control unit 4: Display unit unit

5: Display Module 6: Main Controller

7: electronic board 8: host computer

11, 23: line transceiver 12: display state data memory

21: Display state detector 22: Parallel / serial (P / S) shift register

Figure 4 shows the main circuit block of the operating state check system of the operation of the electric sign according to the present invention.

Here, the display board 5, which is a plurality of sets and constitutes a display board, includes a display unit section 4 that forms a plurality of characters or blanks by matrix dot pixels of 16 X 16 units, and a display control section 3 for controlling the display board. When the display data is transferred to the display unit unit 4 under the control of the microprocessor 31, the display control unit 3 temporarily stores the display state data detected by the dot pixels of the display unit unit 4 or the like. And a display state data receiving processing section 1 for transmitting to the microprocessor 31 side.

In addition, the display unit unit 4 detects when the display unit unit 4 is in an abnormal state such that the dot pixel is disconnected and should be turned on during the display operation, and receives the display state data. A display state data transmission processing section 2 provided to the processing section 1 is provided.

The display state data receiving processing section 1 further includes a line transceiver 11 for receiving the display state data signal transmitted from the P / S shift register 41 of the display unit section 4 and the line transceiver 11. And display state data memory 12 for temporarily storing the display state data output from the display.

Further, the display state data transmission processing section 2 detects the output current / voltage output from the pixel driving circuit 43 which drives the dot pixel block of the display 45 in a static manner to the current limiter 44. A display state signal detector 21 and a P / S shift register 22 for converting serial data in digital logic 1 or 0 state generated in accordance with the signal state detected by the display state signal detector 2 into parallel data. And a line transceiver 23 for transmitting the parallel digital data output from this to the line receiver 11 of the display state data reception processing section 1.

In addition, the display state signal detector 21 shows this in more detail as shown in FIG.

Here, the reference voltage Vref connected between the pixel driver 43 including the plurality of transistors Q1 to Q5 and the diode D circuit and the current limiter 44 to arbitrarily set the output of the pixel driver 43. ) Is composed of an OP amplifier (OP) circuit that generates a logic output by comparing

The present invention having such a configuration can perform the following kinds of operations.

First, the main controller 6 sends a response signal to the host computer 8 to confirm whether the display data message transmitted from the host computer 8 as shown in FIG.

Secondly, the main controller 6 transmits the image data expressed by the display unit section 4 of the display module 5 to the host computer 8.

Third, the main controller 6 transmits to the host computer 8 whether or not an abnormality occurs when there is a request for transmission of image data for each dot from the host computer 8 for a predetermined period.

In addition, when the host computer 8 requests the dot-by-dot status check from the host computer 8, the display module 5 checks the dot status and transmits the dot status to the main controller 6.

At this time, the type of monitoring for each dot is to monitor the pixel output state / short-circuit state of the pixel for a certain time / short-circuit state of the entire display module 5, etc. On the other hand, the host computer 8 of the display board 7 The display pattern status can be monitored in software.

On the other hand, the pixel output state and the predetermined time short-circuit state of the pixel during the monitoring operation as described above, the pixel in the state in which the indicator 45 of the display unit unit 4 is turned on to display a specific phrase as shown in Figs. The driving circuit 43 shows the voltage level of the operation on state or the operation off state depending on whether the predetermined pixel block is turned on or off.

Therefore, the display state detector 21 of the display state data transmission processing section 2 connected to the output end side of the pixel drive circuit 43 supplies the reference voltage Vref of the OP amplifier OP and the output of the pixel drive circuit 43. In comparison, the output state of the pixel driving circuit 43 can be known, and the detected logic value is transmitted to the S / P shift register 22.

The S / P shift register 22 converts the serial display state data respectively detected in the plurality of pixel blocks into parallel data, and then converts the serial display state data into parallel data. The line receiver 11 of the display state data receiving processing unit 1 is processed through the line transceiver 23. ), And the line receiver 11 transmits the display state data transmitted from the line transceiver 23 to the display state data memory 12.

The microprocessor 31 of the display control unit 3 controls the display state data memory 12 to temporarily store display state data transmitted from the line receiver 11 in the display state data memory 12 and to maintain the display state data memory 12. The comparison is made with the display data including the current message text sent from the side.

When the microprocessor 31 compares the present received display state data stored in the display state data memory 12 with the display data currently displayed, the pixel block is turned off if the dot pixel block to be turned on is turned off. It is possible to know that there is a disconnection or abnormality in the circuit of the pixel driver 43 or the like, or when a dot pixel block to be turned off is in a lit state, a display error such as a short-circuit state of the pixel is known. Will be.

Therefore, the microprocessor 31 transmits this information when requested by the main controller 6, and the main controller 6 transmits the display state of each display module 5 at the request of the host computer 8 side. Will be done.

The host computer 8 as described above can check the main controller 6 of a plurality of terminals from time to time in a polling manner, and the checked contents are immediately checked which board 5 has a problem according to the identity assigned to each terminal. You can do it.

In addition, the checking operation of the terminal display board 5 on the host computer 8 side as described above may be checked by a non-periodical method instead of a polling method.

On the other hand, the microprocessor 31 of the display control unit 3 includes a display check main program 100 as shown in FIG. 6A, a transmission / reception processing program 200 as shown in FIG. 6B, and a timer interrupt program 300 as shown in FIG. 6C. Together to perform the above operation.

The display check main program 100 sets a timer interrupt and a transfer interrupt in the start step (step 101), and clears the buffer (step 102).

After that, it is checked whether the system flag is set (step 103). If it is set, the display buffer is set to 0 and the test active value is set (step 104, 105).

After the step 105, the test data is read, and the test data is checked for error (9 steps 106 and 107). In case of an error, the error value is set to logic 0 or the error value is set to logic 1 and the test value is cleared. Step 108,109,110).

In step 103, if the check flag is not set, it is checked whether the transfer flag is set (step 111). If the transfer flag is set, the error data is stored in the status display data buffer and returned to the display control subroutine (step 113). It consists of the processing of.

In the display check main program 100, the timer interrupt program 200, which is a subroutine, resets the timer as shown in FIG. 5C, and sets the R off and the G off to the red switch and the green switch, respectively (steps 201 and 202).

After that, it is checked whether the R off is smaller than the offset (step 203), and if it is small, the R luminance is set in the set state (step 204), otherwise the R luminance value is cleared and returned (step 205).

After the step 202, it is checked whether the G-off is smaller than the offset (step 206), and if it is small, the G luminance is set and returned (step 207), or the G luminance value is cleared and returned (step 208). It consists of the processing of.

On the other hand, in the display check main program 100, the transfer interrupt program 300 which is a subroutine checks whether to transmit or receive as shown in Fig. 5B (step 301). 302) In transfer mode, the transfer buffer is placed in the data buffer and returned (step 305).

If it is the command mode in step 302, it is checked whether it is a check mode (step 306), or it is checked whether it is a data mode (step 306).

If the data mode is set in step 303, the data buffer is returned to the transfer buffer (step 304). If the check mode is set in step 306, the check flag is set and returned (step 307). (Step 308), the transfer flag is set in the transfer mode and the data flag is set in the transfer mode (step 310).

In addition, the timer interrupt program 200 is a microprocessor 31 of the display control unit 3 when the host computer 8 checks the plurality of display modules 5 through the main controller 6 on the display board 7 side. Is an interrupt routine that turns on / off all pixels of the display board 5 so that the display pattern state can be checked. In this case, the timer interrupt operation can be performed for a very short time without seeing the display screen. The driver's lamp does not affect the display of the message, etc., so that the driver's status is not known.

In the present invention, the display system receives various display information from the host computer and displays the message information sent by the host computer on the display board in a simple and easy way. Signboard maintenance and repair can be achieved well, there is a variety of advantages that can be scientifically managed by database the failure status of each terminal signboard.

Claims (7)

The display detected by the display unit unit 4 when the display data is transmitted to the display unit unit 4 provided in the display control unit 3 of the display board 5 and under the control of the microprocessor 31 of the display control unit 3. The display state data receiving processing unit 1 temporarily storing state data and transmitting the state data to the microprocessor 31, and the display unit unit 4 is provided so that the dot pixel is in an abnormal state during the display operation in the display unit unit 4; And a display state data transmission processor (2) for providing the state data detected at this time to the display state data reception processor (1). The display state data receiving processing section (1) according to claim 1, further comprising: a line transceiver (11) for receiving the display state data signal transmitted from the P / S shift register (41) of the display unit section (4), and the line And a display state data memory (12) for temporarily storing display state data output from the transceiver (11). The display current data according to claim 1, wherein the display state data transmission processing section (2) outputs an output current to the current limiter (44) from the pixel driving circuit (43) for driving the dot pixel block of the display unit (45) in a static manner. And P / S shifts for converting serial data of digital logic 1 or 0 state generated in accordance with the signal state detected by the display state signal detector 2 into parallel data. An operating state of an active display board comprising a register 22 and a line transceiver 23 for transmitting the parallel digital data output therefrom to the line receiver 11 of the display state data receiving processing section 1. Inspection system. The pixel of claim 1, wherein the display state signal detector 21 is connected between the pixel driver 43 and the current limiter 44 including a plurality of transistors Q1 to Q5 and a diode D circuit. A system for checking the operating state of an active display board, comprising an OP amplifier (OP) circuit for generating a logic output by comparing a reference voltage Vref at which the output of the driver 43 is arbitrarily set. The microprocessor 31 of the electronic display display control unit 3 is executed by the display inspection main program 100, which sets a timer interrupt and a transmission interrupt at the start stage (step 101), clears the buffer (step 102), and the like. After that, it is checked whether the system flag is set (step 103). If it is set, the display buffer is set to 0 and the test active value is set (step 104, 105). After step 105, the test data is read and it is checked whether the test data is an error. 9 steps 106 and 107), in case of an error, the error value is set to logic 0 or the error value is set to logic 1 and the test value is cleared (steps 108, 109 and 110). (Step 111). If the transfer flag is set, the error data is stored in the status display data buffer and the display control A check processing method of an operating state check system of an active display board, which is composed of a series of processes to be returned to brutin (step 113). The method of claim 5, wherein the timer interrupt program 200, which is a subroutine in the display check main program 100, resets the timer, and sets the R off and the G off to the red and green switches, respectively (steps 201 and 202). After that, it is checked whether the R off is smaller than the offset (step 203), and if it is small, the R luminance is set and returned (step 204), or the R luminance value is cleared and returned (step 205), and the G after the step 202 is performed. If the OFF is smaller than the offset (step 206), if it is smaller, the G luminance is set and returned (step 207), or the G luminance value is cleared and returned (step 208). A check processing method of an operating state checking system of an active display board. The transmission interrupt program 300, which is a subroutine of the display check main program 100, checks whether it is a transmission or reception (step 301), and if it is a reception mode, checks whether it is a command mode (step 302). When the transfer mode is set, the transfer buffer is placed in the data buffer and returned (step 305). In step 302, the command mode is checked whether the check mode is used (step 306), or the data mode is checked (step 306). In step 303, the data buffer is returned to the transfer buffer in step 303 (step 304). In step 306, the check flag is set and returned in step 306 (step 307). (Step 308) The operation is characterized by a series of processes for setting the transmission flag in the transmission mode and setting the data flag in the other case (step 310). Check how to handle a match operation status checks of the system.