KR950002500B1 - Display apparatus for rotary type - Google Patents

Abstract

This apparatus shows any character or graphic information by applying gradually each column display information when at least one column display panel is spinning. The apparatus comprises of a display panel which has a display pattern information generating unit for scanning and generating the each column data of pattern to be displayed gradually on the idsplay module, a spinning operation unit which spins the panel at a spin rate, a power transfer unit which transfers the power of the spinning operation unit to the panel, the first and second holding unit which holds the panel to enable it to spin, and a panel position detecting unit which outputs the panel position data including the information about the spin angle and the spin velocity of the display panel.

Description

Rotary display

1 is a schematic cutaway front view of a part of a rotary display device according to the present invention;

FIG. 2 is a schematic front view of the position detecting plate in which the position detecting hole shown in FIG. 1 is formed.

3A and 3B are block diagrams of a display pattern information generator for displaying text and graphic information on the display block shown in FIG.

4A and 4B are control algorithms for controlling the entire display device.

5 is an example applied to a sign board in which the rotary display device of FIG. 1 is installed in a horizontal direction.

[Field of Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotatable display device, and in particular, it is possible to display various character and / or graphic information using optical illusion by applying each column display information sequentially when rotated to at least one column display panel displaying various information. The present invention relates to a rotary display device.

[Prior art]

In general, promotional signboards form a large vocabulary or figure that can be promoted so that they can be easily recognized from a distance. Mostly, billboards are painted with luminous material or light bulbs are installed inside the signage so that they can be easily recognized at daytime as well as at night. Recently, the propagation effect is further enhanced by using a method of slowly rotating various color plates.

On the other hand, the conventional multi-color light-emitting signboard is installed with a rotating cylinder of various colors inside the billboard, and the rotating cylinder is rotated slowly, the light of the various colors are emitted to the outside by the fluorescent lights installed therein the advertisements formed on the signboard It was supposed to appear in this moving form.

In addition, as a technique for preventing the multi-color light of the multi-colored signboard, the semi-circular reflector is installed on the back of the rotating cylinder that emits various colors inside the signboard, and the spray plate is installed in front of the multi-color light. The multi-color light-emitting signboard is shown in Utility Model Publication No. 89-8564, which can be displayed in various colors and diffused to the front to display the advertisement clearly and beautifully.

As another advertising device, Utility Model Notification No. 89-7336 attaches two permanent magnets per cart to the upper belt of an advertising screen consisting of four screens, and uses the adsorption and repulsion of the electromagnet Disclosed is an advertisement device configured to freeze or move a screen.

However, all of the conventional announcement signboards as described above had only a function of selectively displaying only a few days or a few advertisement screens at a predetermined time.

In the advertisement device in which the advertisement screen having a simple character or graphic display function as described above is rotated periodically or slowly, a small display board using a light emitting display device (LED) arranged in a matrix method that is further developed is used.

The electronic signboard has the highest information transmission effect in consideration of the human senses. Moreover, the color light-emitting display device can express various color images, and thus the advertising effect is different from the passive media that can display only a few pieces of information. There is an incomparable difference.

A large display panel for driving light emitting display elements arranged in such a conventional matrix method is disclosed in Korean Patent Publication No. 89-888. The display device uses a 16 × 16 matrix to display one letter as a display module, and each pixel is composed of four color light emitting devices.

In order to drive the display module, dual port RAM (DPRAM) is adopted instead of the conventional image RAM driving method. When the CPU sequentially applies image data and control data to the DPRAM, the data is received through the I / O device. The timing logic connected to the circuit drives the column driver through the column decoder and the four column drivers to drive the light emitting devices through the latch decoder and the latch.

However, a display device having display modules arranged in a matrix manner as described above has many problems as follows.

16 × 16 = 256 LEDs are required to display one character with the display module. Furthermore, if a three-color display module is configured, 16 × 16 × 3 = 768 LEDs are required. 16 x 16 x 3 x 2 = 1536 LEDs are required.

Moreover, when the large display board is composed of the display module, a huge LED is required, and thus, manufacturing costs are high.

In addition, a control circuit for driving a large number of LEDs must be added, and there is a problem in that enormous power is consumed to drive the LEDs and the control circuit.

Conventional display board has a problem that the same display board must be double and installed on both sides in a place where people frequently come and go, such as the subway station only the front view angle.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a rotatable display device having low proposed cost, low power consumption, and no limitation on viewing angle.

In order to achieve the above object, according to the present invention, a plurality of display modules capable of displaying at least one color and display pattern information generating means for generating and scanning respective column data of patterns to be sequentially displayed on the display module are provided. A display panel, rotation driving means for rotating the panel at a predetermined rotation speed, power transmission means for transmitting power of the rotation driving means to the panel, and installed at both sides of the panel to rotatably support the panel. And a panel position detecting means for outputting panel position data including information on the rotational speed and the rotation angle of the display panel.

The plurality of display modules may be configured as necessary to display one column of data, for example, arranged in a lengthwise direction on one or both sides of a rectangular substrate.

The display pattern information generating means receives the panel position data and generates a display pattern and a controller for sequentially outputting data of 8 columns of one column and a control signal of the display pattern data corresponding to the rotation angle of the panel, and generating the display pattern. And an interface device that receives an output signal from the controller and generates a plurality of display module selection signals, a plurality of display pattern data, at least one color selection signal, and a corresponding display module according to a module selection signal from the interface device. One or more buffers corresponding to the number of colors receiving each of the eight column display pattern data and one color selection signal from the interface device and one display module selection signal among the column decoder outputs, respectively. A plurality of buffers in sets, and each In response to the one or more set of buffers made of a set of at least one driver it is configured by means of a rotary display unit, characterized in that consisting of a plurality of drivers for configuring each of the display module.

The above-mentioned rotation drive means is comprised by a motor, for example, and a power transmission means can be comprised by either a belt or a gear.

When the panel is rotated by the motor, the rectangular side forms an elongated cylinder. When the substrate is rotated, data including information on the rotational speed and the rotation angle of the substrate being rotated from an infrared sensor composed of a light emitting display element and a phototransistor provided opposite to both sides of the position detection plate formed at one end of the substrate may be stored. The display pattern is generated by the display pattern information generating means and supplied to the CPU which is a control unit.

When there is not much information to be displayed and it does not need to change continuously, the CPU selects one at a time according to the information about the rotation speed and the rotation angle of the substrate among the display pattern information stored in the memory provided in the display pattern information generating means in advance. The display module is read in sequence by the eighth column of column data, and the display module is driven by dynamic scanning.

On the other hand, if there is a lot of information to be displayed and the information is constantly changing, the display module is supplied in the same manner as above by receiving the display information supplied from the host computer through the RS-232C asynchronous communication means or the like through the second supporting means. Drive.

Applying 8 columns of display data of the corresponding column sequentially to the rotating display module in this way causes, for example, the rectangular panel to be rotated and created by rotating the rectangular panel. In fact, they are mistaken for being displayed continuously and appear as if the letters or graphics are floating in the air.

Furthermore, the present display panel information generating means can drive the display modules of three colors, for example, red (R), green (G), and blue (B) selectively or in combination.

In addition, the display pattern may be enlarged or reduced according to the rotation speed of the panel and the scanning frequency of the display information.

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

1 is a schematic perspective view illustrating a part of a rotating display device according to an exemplary embodiment of the present invention.

Display pattern information for supplying a plurality of display modules (DM1 to DM16) capable of at least one color display by dividing the rotary display device shown in FIG. A rectangular display panel 3 provided with a generator 1, a motor 5 for rotating the panel, a reduction gear or belt 7 for transmitting the rotational force of the motor to the panel, and the substrate Position detection plates provided on both sides to form the first and second support devices 9 and 11 for rotatably supporting the panel, and the position detection holes 13 formed integrally with the first support device. It consists of 15 pieces.

In addition, the display device of FIG. 1 may further include, for example, a cylindrical cover 17 made of a transparent or colored light-transmitting material to protect the display device from snow, rain, etc. and to increase visibility, particularly when installed outdoors. desirable. However, the cover 17 does not necessarily need to be cylindrical and may take any form.

The display modules DM1 to DM16 may be formed of a single color, two or three color light emitting display elements, for example, LEDs. However, the present invention is not limited to the LED, and it is also possible to use a color lamp or any display element.

In the present embodiment, since one display module is composed of a combination of eight R, G, and B three-color LEDs, one display may be displayed using two display modules.

As shown in FIG. 2, the first supporting device 9 includes a reference setting hole formed on a line with the upper and lower holes 131 and 132 formed at the same distance from the center as the upper and lower holes. The position detecting plate 15 on which the 133 is formed is fixed to the supporting base 91 by appropriate fixing means.

A fixed shaft 93 is provided at the center portion of the position detection plate 15, and the fixed shaft 93 is rotatably coupled to the bearing of the ball bearing housing 95 fixed to the display panel 3.

Meanwhile, power is supplied to the display modules DM1 to DM16 and various components in the substrate through the metal ball bearing or through a through hole (not shown) installed in the center of the fixed shaft 93. In the present invention, the power supply is not limited to this, and it is also possible to adopt any other known method such as a brush structure of a motor or a method of using a conductive gear.

In addition, the rotation speed and the rotation angle of the panel 3 in which the LEDs 2 to 4 and the phototransistors PT2 to PT4 which emit infrared light are installed at both sides of the holes 131, 132, and 133 of the position detecting plate 15. The information on is supplied to the display pattern generator 1.

The panel 3 has a required reduction ratio, for example, by the gear system or the belt drive system, from the DC motor 5 and the rotational force is transmitted. This is because when the panel 3 is rotated from about 200 RPM to about 500 RPM, this rotation speed range controls LED lighting according to the rotation angle.

In addition, when the scale of the electronic display board is about to display information about 40 characters in width, it is also possible to attach the stepper motor to the rotating shaft, in which case the speed reduction device is unnecessary.

On the other hand, when one side end of the panel 3 is rotatably supported by the second support device 11, the second support device has a rotation shaft 113 having a through hole 111 formed in the center thereof. 3), the shaft 113 is coupled to the bearing housing 115 in which the ball bearing is housed, and a support base 117 is formed at the lower end of the bearing housing 115. The support bases 91 and 117 are also fixed to the cover 17.

On both sides of the through hole 111 of the rotating shaft 113 for contactless communication between the host computer and the RS-232C asynchronous serial communication port of the display pattern generator 1 (see FIGS. 2 and 4). LED1 and phototransistor (PT1) are installed opposite each other. A block diagram of the display pattern information generating device for driving the display modules DM1 to DM16 of the rotary display device having such a structure is shown in FIGS. 3A and 3B.

However, in the case where it is desired to display a fixed display pattern, the above communication means is not necessary.

The display pattern information generator shown in FIGS. 3A and 3B uses a microprocessor (CPU) 31 as a control element for generating display pattern information and control signals for driving the display modules DM1 to DM16. The CPU 31 has a ROM 33 which controls the entire display pattern information generating device and which stores a control program necessary for communication with the host computer 32 as firmware and temporarily stores data being processed. It is provided internally or externally.

The serial communication port of the CPU 31 is connected to the host computer 32 via the LED1, the phototransistor PT1 and the RS-232C card shown in FIG.

In the present embodiment shown in FIG. 3, the character to be displayed on the display module in the host computer 32 generates and modifies graphic information, and then displays the data through the RS-232C card. ) Shows an example of supplying the same.

In addition, the display panel 3 which is connected to the interrupt terminal 1NT of the CPU 31 by connecting the outputs of the photocouplers PC1 to PC3 composed of the LED2 to LED4 and the phototransistors PT2 to PT4 shown in FIG. Information about the rotational speed and the rotational angle with respect to FIG. 3 (only PC1 is shown in FIG. 3).

That is, PC1 and PC3 receive information about the starting point of the data to be displayed on the front of the display panel 3, and PC2 obtains information about the starting point of the data to be displayed on the back of the display panel 3.

On the other hand, when the CPU 31 does not need to change the display pattern information, it is also possible to obtain display pattern information by programming the display pattern information into an EPROM or the like connected to the CPU 31, for example.

When the pattern information to be displayed is determined by one of the two methods described above, the CPU 31 outputs various types of information by the dynamic scanning method through the interface device 35.

The interface device 35 is programmable in the CPU 35 and receives 8-bit data, an address signal and a control signal from the CPU 35, and transmits 8-bit data from the port A (PA) to a column decoder (CDEC: 36). ) And 8-bit pattern data from port B (PB) to each of the data buffers BUF11 to BUF163, and 3-bit R, G and B color selection information from port C (PC) to the corresponding buffer ( BUF11 to BUF163). The interface device can be easily implemented using the 8255A chip which is a general-purpose programmable I / O device of Intel Corporation.

On the other hand, the CDEC 36 selects a display module selection signal for selecting one of the display modules DM1 to DM16 by 4-bit data among 8-bit data from the output terminal of the port A, and selects a chip of each data buffer BUF11 to BUF163. The display module to be applied to the terminal CS is selected.

Therefore, one display module is selected by the display module selection signal, color selection information of one of R, G, and B, and 8-bit pattern data, and each R is composed of eight LEDs through a driver DRV. One of the LED blocks of the G and B LED blocks is selected to display the LED blocks according to the 8-bit pattern data.

The overall control algorithm for controlling such a display device is recorded in the ROM 23 as firmware, as shown in Figs. 4A and 4B.

First, in step S1, the interrupt vectors, the CPU, and the interface device are sequentially initialized in steps S2 to S4.

Then, display on the display panel 3 is started to calculate the current position of the display panel 3 in step S5. Then, in step S6, it is determined whether it is a data display start position, and if it is not the display start position, it returns to step S5, and if it is a data display start position, it moves to the next step.

In the next step S7, the data to be displayed is read from the RAM 34, and the data to be displayed in the next step S8 is output to the interface device 35. Thereafter, a column to be displayed is designated in step S9, and then, the flow advances to step S10 to output the color data of the display data.

After the above steps, it is determined whether the column to be displayed in step S11 is the last column. If the column is the last column, the flow proceeds to step S12 and column 1 is set. If the column to be displayed in step S11 is not the last column, Proceeding to step S13, the station to be displayed is increased by 1 to sequentially output data for the remaining columns.

Then, in step S14, it is determined whether the current line is the last line in the corresponding displayed column, and if it is not the last line, the process proceeds to step S16 to increase the line by one, and if the last line, the process proceeds to step S15. Set to 1.

When the last line of the last column is displayed as a result of the above steps, the flow advances to step S18 to determine whether the communication format of a communication buffer (not shown) built in the CPU 31 for the communication with the host computer 32 is the promised format. To judge.

In the case of the promised format, the process proceeds to step S20 to determine whether the contents of the communication buffer are a command. If the contents of the communication buffer are a command, for example, deletion, movement, enlargement, reduction, inversion and blanking of a command pattern, step S20. After searching for the command in the command table, the corresponding subroutine is called to advance the subroutine. If the communication buffer is not a command in S20, the process proceeds to step S21 to display the contents of the communication buffer. In other words, it transfers to the RAM 34.

Therefore, the display start of FIG. 4A is started based on the data to be displayed and the instructions obtained from steps S21 and S20. The control algorithm is just an example, and many modifications may be made as necessary.

The above-described control algorithm shows an example of a case where data to be displayed from the host computer 32 is received and displayed by data communication.

When a memory device for data to be displayed in a display panel is provided without using the host computer 32, those skilled in the art can be easily modified based on the above-described control algorithm.

FIG. 5 illustrates an example in which the rotary display device connected to the host computer 32 is installed in a horizontal direction by applying to a sign board.

However, in the case of the present invention, the display in any direction can be applied by simple modification of the program.

In addition, although the embodiment of FIG. 3 is output to one CDEC 36 using only 4 bits output from the port PA of the interface device 35, the remaining 4 bits output from the port A (PA) are CDEC selection signals. In the case of adding a selector to be used as an example, the present embodiment can be extended to control 16 CDECs.

In addition, the present invention can be displayed more and more information by applying the principles of the present invention when selecting a high-performance and large-capacity device for the CPU, memory, interface device and the like.

Furthermore, the present embodiment has been described using an example of a display module in one column, but the present invention is not limited thereto, and the display device may be configured using, for example, a display module in two or more columns. However, in the case of configuring the display device using one or more display modules, the manufacturing cost increases only as much as the display module. In addition, when the display module is installed at the top and bottom of the panel at the same time, the scanning time is halved and the brightness is doubled.

As described above, according to the present invention, the display module is configured using three color R, G, and B LEDs, and a complete color display is possible by driving a combination of LEDs of various colors.

In addition, when rotated faster or later than the normal display panel rotation speed, the displayed characters or graphics may be reduced or enlarged.

As described above, the present invention is not limited to the above-described embodiments, and various changes and modifications can be made without departing from the spirit of the present invention.

In addition, the display device of the present invention can produce a display panel at a very low cost of 1/16 for single-sided display and 1/32 for double-sided display, compared to conventional display devices such as LEDs for displaying one character. For example, if hundreds of characters are displayed, such as a large display board, the display panel manufacturing cost and power consumption in proportion to it can be enormously reduced.

Claims (6)

A display panel provided with a plurality of display modules capable of displaying at least one color and display pattern information generating means for generating and scanning each column data of a pattern to be sequentially displayed on the display module; rotating the panel at a predetermined rotation speed Rotation drive means for transmitting power to the panel, power transmission means for transmitting power to the panel, first and second support means installed on both sides of the panel to rotatably support the panel, and the display. And a panel position detecting means for outputting panel position data including information on the rotational speed and the rotation angle of the panel. The display pattern generating apparatus according to claim 1, wherein the display pattern information generating means receives the panel position data and generates a display pattern for sequentially outputting data of eight columns in one column and control signals of the display pattern data corresponding to the rotation angle of the panel. An interface device generating a plurality of display module selection signals, a plurality of display pattern data, and at least one color selection signal in response to a control unit, the display pattern generation and an output signal from the control unit, and a module selection signal from the interface device. A plurality of column decoders for selecting the corresponding display module, each of the eight columns of display pattern data and one color selection signal from the interface device, and the number of colors for receiving one display module selection signal among the column decoder outputs. Consists of one or more buffer sets corresponding to And a number of buffers, and one or more driver sets corresponding to the one or more buffer sets, respectively, and comprising a plurality of drivers for driving the respective display modules. 3. The rotatable display device according to claim 2, wherein the display pattern generation and display pattern information of the control unit are obtained from a memory device in the display panel or from outside the display panel by contactless data communication. According to claim 1 or claim 3, wherein the second support means is a rotating shaft having one side fixed to the display panel and a through hole formed in the central portion, the first bearing receiving portion rotatably coupled to the rotating shaft, and the first And a first support base for supporting a bearing housing, wherein the light emitting element and the light receiving element are respectively connected to the display pattern generation and the control unit and the external control unit for contactless communication on both sides of the through hole. Display. The display apparatus of claim 1, wherein the rotatable display further includes a protective cover having a predetermined shape surrounding the entire display device, wherein the first supporting means includes a second supporting base fixed to the protective cover, and the second supporting base. And a position detecting plate integrally formed with at least one hole, a fixed shaft formed at the center of the position detecting plate, and a second bearing receiving portion fixed to the display panel and rotatably coupled to the fixed shaft. And the display panel is supplied with power through the fixed shaft and the bearing accommodation portion, through a through hole formed in the fixed shaft, or a brush method. The position detection plate of claim 1, 2 or 5, wherein the position detection plate on which the plurality of holes is formed is formed on a connection line between the first and second holes and the first and second holes formed at the same distance from the center. A hole, wherein first to third photocouplers for detecting a rotation angle and a rotation speed of the display panel are respectively provided at both sides of the first to third holes, and the position detection plate and the first to third photocouplers are installed. And the panel position detecting means.