JPH0425549B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device in which a large number of display elements controlled from a central operation panel are arranged in a plane.

Conventionally, as shown in FIG. 1, this type of display device A has a large number of display elements 1 ₁ , 1 ₂ . Display element 1 ₁ by switch operation from
1 ₂ There was something that turned on or off... However, in this conventional example, each display element 1 ₁ , 1 _{2 .} . . and the switch on the central operation panel are wired in direct correspondence ( ₁ : ₁ correspondence). As the number of... increases, the number of wiring also increases, and the number of switches also increases, so there is a problem that it is not easy to add display elements 1 ₁ , 1 ₂ , etc. The present invention has been made in view of the above points, and its purpose is to:
To provide a display device in which display elements can be easily added, an address setting section for setting a unique address corresponding to each display element has a simple configuration, and address setting operation is simple.

Examples will be described below using figures. Figures 2 to 4 show the basic configuration of the present invention, in which centralized operation panels B ₁ and B ₂ and display device A are connected via a power line l of a commercial power source AC.
Transmission and reception of data between B ₁ and B ₂ and display device A is performed using a power line carrier method in which high frequency signals are transmitted by superimposing commercial power supply AC. Figure 3 shows the basic unit of the display device A, where 10 is a signal processing section that receives and demodulates the transmission signal V _S sent from the central operation panels B ₁ and B ₂ via the power line l. and a modulation/demodulation circuit 11 that modulates a carrier wave with data sent back to the central operation panels B ₁ and B ₂ to form a return signal V _B , and a synchronization signal that outputs a zero cross signal V _Z synchronized with the zero cross point of the commercial power supply AC. It is composed of a generating circuit 12. 13 is a logic processing unit which, when the address data AD transmitted by the received transmission signal V _S matches the unique address preset by the address setting unit 14', transmits the address data AD following that address data AD. A continuous lighting signal V _C or a blinking lighting signal that takes in the display control data CD to control the display mode of the display element 1.
V _F is formed and sent to the display drive unit 15, and data to be sent to the central operation panels B ₁ and B ₂ is created and sent to the modulation/demodulation circuit 12. The display drive section 15 includes a clock generator CL that counts the zero cross signal _VZ and generates a blinking clock _VCL , an AND circuit AND, and a backflow blocking diode.
It is formed by D ₁ , D ₂ and a switching transistor Q, and when the continuous lighting signal V _C is input, the display element 1 is lit continuously, and when the blinking lighting signal V _F is input, it lights up the display element 1 at the cycle of the blinking clock V _CL . The display element 1 is turned on and off, and when both signals V _C and V _F are not input, the display element 1 is turned off. Fourth
The figure shows centralized operation panels B ₁ and B ₂ , and Case 3
The number of the display elements 1 ₁ , 1 ₂ . . . whose display mode is to be changed and the display mode (on, blinking, off) are input using the keyboard 31 provided on the top surface of the 0. The data is immediately sent to display device A via power line transport, and in display device A, the display mode of the corresponding display elements 1 ₁ , 1 ₂ . . . is changed. In the figure, 32 is a key input data display section, and 33 is a confirmation lamp 33 ₁ , 33 ₂ . . . consisting of a light emitting diode corresponding to each display element 1 ₁ , 1 ₂ .
This is an operation display section consisting of...

FIG. 5 shows an example of the transmission signal V _S. The half cycle section H of the commercial power supply AC is divided into four, and the sub-bit SB ₁ is determined depending on whether or not a high frequency signal is superimposed on each divided section h ₁ to h ₄ . ~Transmits "1" and "0" of SB ₄ , and 4 sub-bits of half cycle H SB ₁ ~ _{SB 4}
The control signal is generated by In other words, the start data is when the control signal is (0, 1, 0, 1).
SD, (0, 1, 1, 1) is the transmission data "1", (0, 1, 0, 0) is the transmission data "0", (0, 1, 1, 0) is the transmission data end data
For example, start data SD and 8
A transmission signal VS is formed by address data AD for terminal calling consisting of bit transmission data, display control data CD consisting of 2 bit transmission data, and end data _ED .

Hereinafter, an example of use and operation of the above-mentioned display device A will be described. This type of display system is used, for example, in gift corners of department stores.
A central operation panel _B1 will be installed for reception at the gift corner, and a central operation panel will be installed at the product packaging site.
B ₂ is placed, and the display device A is placed so that the customer can see it clearly. Now, when a customer's product is accepted at the reception desk, a number tag is given to the customer, and the number corresponding to the number on the number tag (this number is displayed on the display elements 1 ₁ , 1 ₂ , etc.) is entered using the keyboard 31 of the central operation panel B ₁ . (corresponding 1:1 with the number) and press the function key indicating acceptance to input data for setting the display elements 1 ₁ , 1 _{2 .} . . to continuous lighting mode. In the display device A, the display elements 1 ₁ , 1 ₂ . . . are continuously lit by the transmission signal V _S from the central operation panel B ₁ . At the same time as this lighting, a return signal is sent from display device A.
V _B is transmitted, and this return signal V _B is sent to each centralized control panel.
Received by B ₁ and B ₂ and the corresponding confirmation lamp 33
₁ , 33 ₂ ... lights up. Next, when the packaging of the product is completed at the packaging site, the number corresponding to the number corresponding to the product is entered on the keyboard 31 of the central operation panel _B2 installed at the site, and the function key indicating packaging completion is input. Press display element 1 ₁ ,
1 ₂ Input the data to set ... to blinking lighting mode. Then, a transmission signal V _S is transmitted from the central operation panel B ₂ to the display device A, and the display device A causes the display elements 1 ₁ , 1 _{2 .} . . to flash on and off. At the same time, a return signal V _B is transmitted to blink and light up the confirmation lamps 33 ₁ , 33 _{2 .} . . corresponding to the blinking display elements _{1 1} , 1 ₂ . next,
At the reception desk, the display elements 1 ₁ , _{1 2} .
When 3 ₁ , 33 _{2 .} . . flashes, the clerk at the reception desk will know that the packaging for the product with that number has been completed.
Next, when the customer exchanges the number plate and the product, at the reception desk, he inputs the number corresponding to the number on the keyboard 31 of the central operation panel B ₁ , presses the end function, and displays the display element 1 ₁ , 1 ₂ ...
Enter the data to turn off the light. As a result, a transmission signal _VS for turning off the display elements 1 ₁ , 1 _{2 . .} . is transmitted, and the display device A receives this transmission signal _VS and turns off the display elements 1 ₁ , 1 ₂ . At the same time, a return signal V _B is sent to turn off the confirmation lamps 33 ₁ , 33 _{2 . .} . corresponding to the extinguished display elements 1 ₁ , 1 ₂ . There is.

In the basic example configured as above, when adding display elements 1 ₁ , 1 _{2 .} . . , logic processing unit 1
3, and there is no need to increase the number of wires between the central operation panels B ₁ and B ₂ and the display device A, so it is easy to add display elements 1 ₁ , 1 ₂ . . . It has the advantage of however,
In such a basic example, the logic processing units 13 corresponding to the display elements 1 ₁ , 1 ₂ . . .
Even though the upper bits of the unique addresses set in advance are the same, all the bits of the unique addresses are set individually by switches _S1 to _S8 of the address setting section 14'. This increases the number of switches in the address setting section 14', resulting in increased costs and troublesome operations.

6 to 8 show one embodiment of the present invention made in view of the above points, and the schematic configuration is the third embodiment.
It is almost the same as the basic example in the figure. That is, in the embodiment, eight display elements 1 ₁ to 1 ₈ . . . as shown in FIG.
The display units 3 ₁ to 3 ₁₅ are formed by arranging the display units 3 ₁ to 3 ₁₅ in 5 rows horizontally and 3 columns vertically, and 120 display elements 1 ₁ , 1 ₂ . . . are arranged in a matrix. Eight basic units similar to those shown in FIG. 3 are provided in each display unit ₃₁ to ₃₁₅ .
However, the clock generator CL of the display drive section 15
are standardized, and each display element 1 ₁ , 1 ₂ . . . has the same blinking cycle and blinks in synchronization. By the way, in the embodiment, the display elements 1 ₁ to 1 ₄ in the upper row of the display unit 3 ₁
The address setting unit 14 of the logic processing units 13 ₁ to 13 ₄ corresponding to each of the logic processing units 13 ₁ to 13 ₄ is a lower address consisting of switches S 1 and S ₂ that individually set the lower two bits of the unique address of each logic processing unit _{13 1} to 13 4. Setting section 14a
and six switches _S3 that commonly set the upper six bits of the unique addresses of each logic processing unit ₁₃₁ to ₁₃₄ .
_.about.S8 and an upper address setting section 14b. On the other hand, the logic processing units 13 respectively corresponding to the display elements ₁₅ to ₁₈ in the _lower row of the display unit 31
The address setting sections 14 of ₅ to ₁₃₈ are similarly configured.

Below, each display element 1 of display units 3 ₁ to 3 ₁₅
To specifically explain the operation for setting the unique addresses corresponding to ₁ and 1 ₈ , the display elements 1 ₁ in the upper row
Logic processing units 13 ₁ , 13 ₂ , 13 corresponding to ~1 ₄
The data values set in the lower address setting section 14a of ₃ , 13 and ₄ are (0, 0), (0, 1), (1,
0), (1, 1), and the lower row display elements 1 ₅ , 1 ₈
Logic processing units 13 ₅ , 13 ₆ , 13 ₇ , corresponding to ...
The data values set in the lower address setting section 14a of ₁₃₈ are also (0,0), (0,1), (1,
0), (1, 1), and each display unit 3 ₁
The data values of the lower address setting section 14a of 315 to ₃₁₅ are always fixedly set as described above. Next, the data values set in the upper address setting sections 14b in the upper and lower columns are set according to the arrangement positions of the display units ₃₁ to _315. For example, the data values set in the upper address setting sections 14b of the upper and lower columns are Upper address setting section 14b corresponding to display elements 1 ₁ to 1 ₄ in the upper row of unit 3 ₁
The data value to be set to (0, 0, 0, 0,
0, 0), and the data values to be set in the upper address setting section 14b corresponding to the display elements 1 ₁ to 1 ₄ in the lower row are (0, 0, 0, 1, 0, 1).
Predetermined data may be set in the upper address setting section 14b of each display unit ₃₂ to ₃₁₅ in the same way; in this case, the lower address setting section 14a has no relation to the arrangement position of the display units ₃₁ to ₃₁₅ . Therefore, it may be fixed. Therefore, the operation for setting a unique address is greatly simplified, and construction becomes easier when a large number of display elements 1 ₁ , 1 _{2 .} . . are arranged.

As described above, the present invention arranges a large number of display elements in a two-dimensional array, receives a transmission signal sent from a central operation panel via a commercial power line, and sets the address data transmitted in the transmission signal in advance. A logic processing section is provided corresponding to each display element, which takes in the display control data transmitted following the address data and controls the display mode of the display element when the address data matches the unique address given. The number of display elements can be increased without increasing the number of signal lines, and the lower address setting section that individually sets the lower bits of the logic processing section corresponding to an appropriate number of display elements arranged in close proximity can be added to the above logic. Since an upper address setting section is provided in each processing section and commonly sets the upper bits of the unique address of each logic processing section, the structure of the address setting section that sets the unique address corresponding to each display element can be changed. This has the advantage that it is possible to provide a display device that is simple and allows easy address setting operations.

[Brief explanation of drawings]

Fig. 1 is a front view of a display device according to the present invention, Fig. 2 is a front view of a display device according to the present invention;
The figure shows an example of a display system, Fig. 3 is a block circuit diagram of a basic example, Fig. 4 is a top view of a central operation panel, Fig. 5 is a diagram showing the structure of a transmission signal, and Fig. 6 is a diagram of the present invention. FIG. 7 is a front view of one embodiment, FIG. 7 is a perspective view of essential parts of the same, and FIG. 8 is a block circuit diagram of the same. 1, _{1 1} , 1 ₂ ... are display elements, 13, 13 ₁ -
₁₃₈ is a logic processing section, 14a is a lower address setting section, and 14b is an upper address setting section.

Claims (1)

[Claims] 1 A large number of display elements are arranged in a two-dimensional array, and a transmission signal sent from a central operation panel via a commercial power supply line is received, and the address data transmitted in the transmission signal is preset to a unique address. In a display device in which a logic processing unit is provided corresponding to each display element, which takes in display control data that is transmitted following the address data and controls the display mode of the display element when the address data matches, Each logic processing section is provided with a lower address setting section that separately sets the lower bits of the logic processing section corresponding to an appropriate number of display elements to be displayed, and the upper bits of the unique address of each logic processing section are shared. 1. A display device comprising an upper address setting section for setting an upper address.