WO2010117202A2 - Rotatable display apparatus and a video playing method thereof - Google Patents

Abstract

The present invention relates to a rotatable display apparatus for high-quality video playback while rotating LEDs (Light Emitting Diodes) arrayed in a single plane, the apparatus comprising: LED modules composed of LEDs; a rotor for supporting the LED modules; a body for supporting rotation of the rotor; a motor for rotating the rotor; and a controller for transmitting the entire image data of a corresponding frame to each of the LED modules to make all images of multiple frames that are expressed from each LED module overlap with one another. As image frame data is expressed simultaneously in the same quantity as the number of LED modules used for expressing one scene, the display apparatus of the present invention can display a video seamlessly, realize soft video playing, provide high-quality video playback with increased screen brightness, facilitate the watching for a viewer, arouse the viewer's interest, output realistic and efficient sounds, and automatically stop the motor or allow an operator to stop the device and take necessary measures when a rotating shaft is slightly displaced, thereby enhancing the safety and durability of the device as well as protecting the viewer from major unexpected accidents.

Description

Rotary display device and video playback method

The present invention relates to a rotatable display device and a video playback method thereof, wherein a high quality video is played while rotating an LED device (light emitting device) arranged in one dimension, and the position of a screen is detected by detecting a viewer (viewer) position. Rotating display device and video playback method thereof which can align or follow the viewer or output sound in the viewer's direction, and detect large deviation of the rotating shaft of high-speed rotating to prevent large accidents in advance It is about.

In general, if a plurality of LED elements (light emitting elements) are rotated one-dimensionally and the LED modules are flashed at high speed according to the angle, various characters, graphics, and even moving images can be reproduced by the afterimage effect of human beings.

Such a rotatable display device is a technology for representing an N + 1-dimensional image using an N-dimensional display device, including an LED module including a plurality of LED elements, a rotating body supporting the LED module, and the rotating body. A body for rotating the rotatable body to be rotatable, installed on the body, and applying various characters, graphics or video signals to the LED element according to the rotation angle of the motor and the LED module rotating the rotatable body. It is a structure provided with a control part.

On the other hand, when observers continuously observe 24 or more still images per second, the viewer recognizes them as moving images. In the case of conventional image display devices such as CRT, LCD, and PDP, the viewer displays 30 to 60 still images per second. It is equipped to recognize the video. In this case, when observing more still images per second continuously, the observer can feel a softer image. As the number of still images displayed per second decreases, it becomes difficult to express the images smoothly. In addition, the order in which the still images are displayed must be expressed in the order in which the still images are taken, and in the case of conventional video display devices such as CRT, LCD, and PDP, the Nth frame is displayed after the Nth frame is displayed. To be recognized as a video.

When a moving picture signal is reproduced in the rotating display device by applying the conventional method, when displaying 60 still images per second for smooth image display, 60 still images per second should be sequentially displayed.

At this time, in order to display a video using one LED module, one revolution per 1/60 second should be performed. The LED module displays image data designated according to the rotation angle at this time, allowing the viewer to display one still image every 1/60 second. Can be observed. In this case, the rotating body should rotate at 60 speeds per second and reach 3,600 RPM at RPM. This is not suitable as a display device that must continuously display an image because it must continuously rotate at a high speed of 3,600 RPM, which can seriously impair the reliability and safety of the product.

In addition, when one LED module is used, the brightness of the display device may be remarkably decreased due to the characteristics of the display device expressed using only the afterimage of a human eye.

There are several ways to use the LED modules to solve the reliability, safety, and brightness issues mentioned above. For example, when using two LED modules, one LED module can be used to display 60 still images per second. In comparison, the number of revolutions is reduced by half (1800 RPM), and the brightness of the brightness is naturally brighter because the time to display the designated vertical axis according to the rotation angle can be doubled when using only one LED module.

The above-mentioned rotating display device using LEDs requires at least 2000 cd / m2 of brightness indoors and 5000 cd / m2 of outdoors in order to be used commercially. To achieve this, at least eight LED modules must be used. do. In this case, as the rotatable display is rotated 360 degrees, as shown in FIGS. 2 and 3, in order to reproduce the entire screen area of the N ^th frame having the length L and the height H, The entire screen area is divided into eight, 1/8 of which is played by the first LED module 1W, 2/8 of which is played by the second LED module 2W, and 3/8 by 3rd LED modules ( 3W) is played, 4/8 is played by the fourth LED module 4W, 5/8 is played by the fifth LED module 5W, 6/8 is played by the sixth LED module 6W, , 7/8 is played by the seventh LED module (7W), 8/8 is played by the eighth LED module (8W), N-th frame is displayed for 1/60 seconds and one still image It becomes visible.

Next, a background example will be described in more detail. In this case, an image having an XGA resolution (1024 * 768) is expressed at 60 Hz using eight LED modules. FIG. 3 is a diagram showing this, and when referring to this, during the passage of time from t0 to t1, the entire screen area of the N ^th frame is divided into eight and each LED module 1W (2W). (3W) (4W) (5W) (6W) (7W) (8W) are displayed during 1/8 rotation, and then, while time passes from t1 to t2, N + 1 ^th frame ), The entire screen area is divided into eight and displayed for each LED module 1W, 2W, 3W, 4W, 5W, 6W, 7W, and 8W during the next 1/8 rotation. . In the Nth frame, 1W module has 1 ~ 128 lines, 2W module has 129 ~ 256 lines, 3W module has 257 ~ 384 lines, 4W module has 385 ~ 512 lines, 5W module has 513 ~ 640 lines, The 6W module will display 641 to 768 lines, the 7W module will display 769 to 896 lines, and the 8W module will display 897 to 1024 lines.In the N + 1st frame, the rotor will rotate 1/8 of a time for 1/60 seconds. 1W module has 129 ~ 256 line, 2W module has 257 ~ 384 line, 3W module has 385 ~ 512 line, 4W module has 513 ~ 640 line, 5W module has 641 ~ 768 line, The 6W module will display 769 to 896 lines, the 7W module will display 897 to 1024 lines, and the 8W module will display 1 to 128 lines.

However, such a conventional frame division reproduction method does not cause a problem because there is no difference between the N-th frame data and the N + 1st frame data when a still image is implemented. When the difference frame data is different from each other, it is as if the screen is cut off.

That is, for example, as shown in FIG. 6, when the elliptical ball displayed in the N ^th frame is reproduced as an elliptical ball whose position is shifted in the N + 1 ^th frame. 3 LED module (3W) displays 257 to 384 lines in Nth frame and rotates 1 / 8th in N + 1st frame and then displays 385 to 512 lines. At the moment when the frame is changed, the third LED module 3W displays 384 lines to 385 lines. At this time, when the third LED module 3W changes to the next frame, the image does not change smoothly, and the screen disconnection phenomenon is expressed as if the screen is disconnected.

This does not occur only in the third LED module 3W, but the same occurs in all the LED modules 1W to 8W, and there is a problem that the screen is disconnected at all points when data differences between frames occur.

On the other hand, the rotatable display device, because the LED module rotates 360 degrees, the viewer can watch from any angle, but the conventional rotatable display device is played only at a certain angle irrespective of the viewer's position in all directions It is not possible to watch at, it is difficult to attract viewers in all directions, and even if it attracts the viewer's attention, it is inconvenient to move to a position where the viewer can easily track the screen or listen to the sound.

On the other hand, the external module is installed to protect the viewer from the LED module and the rotating body, and the rotating body rotating at high speed supports the rotating shaft to be precisely rotated by a bearing or the like so that the position of the rotating shaft is not misaligned or separated. It should be installed as much as possible.

However, various components such as a power transmission device and a power supply are asymmetrically connected to the rotating shaft, and the rotation center of the rotating shaft is changed while the positions of the bearings and the various components described above are changed by a minute mechanical flow while driving for a long time. If the vibration is not maintained, or the vibration is further amplified and eventually the rotating body rotating at high speed is separated from the center of rotation and collides with the outer case, or various parts such as a motor are damaged, greatly threatening the safety of the viewer. There was a problem that greatly reduces the durability and safety of the.

An object of the present invention for solving the above problems, to prevent the disconnection of the object moving at high speed in the video, the video can be continuously played smoothly, and to greatly improve the brightness of the screen When the viewer is located far away from the sensing area, the screen rotates at a slow speed to give a sense of mystery.When the viewer approaches the sensing area, the center of the screen may be aligned toward the viewer, and the screen moves along with the viewer's movement. It is easy to attract viewers, facilitates viewers' viewing, and can listen to realistic sound through speakers close to the viewers, which maximizes sound effects and enables efficient sound output. By monitoring the state and monitoring the fine deviation of the rotating shaft, it automatically By stopping the motor or the operator can quickly stop the device and follow-up, and to provide a rotating display device and a video playback method thereof that can safely protect the viewer from unforeseen large accidents.

A rotating display device of the present invention for achieving the above object, the LED module consisting of a plurality of LED elements; A rotating body supporting the LED module; A body supporting the rotational body so that the rotational body is rotatable; A motor installed in the body to rotate the rotating body; And while the LED modules are rotated, the entire image data (one complete still image) of the designated image frame to be displayed by the EL module designated by the specific ID is reproduced and displayed on each LED module. And a controller for transmitting the entire image data of the corresponding frame to each of the LED modules so that the entire images of the plurality of frames overlap each other.

According to the present invention, the control unit, the frame data extraction unit for extracting the frame data from the input video source data; A frame-by-frame whole image data generator for generating frame-by-frame whole image data from the frame data; An entire image data generation unit for each LED module for generating the entire image data for each LED module to be played by each LED module according to the rotation angle of the LED module in the entire image data for each frame; And an entire image data allocator for each LED module for allocating the entire image data for each LED module to each LED module. The controller is configured to distribute the entire image data for each LED module to each LED module. It is possible to connect with the dispensing device.

In addition, according to the present invention, the entire image data for each LED module may include the entire screen area of the N-th frame, and may include a part of the N-th frame before or the N-th frame after the N-th frame.

In addition, according to the present invention, the control unit, the individual LED controller is installed on the rotating body, and connected to each of the LED module individually; And installed on the rotating body and individually connected to the individual LED controllers so as to transmit the entire image data for each LED module to the individual LED controllers, and storing the entire image data for temporarily storing the entire image data for each LED module. It can be connected with.

On the other hand, the video playback method of the rotary display device of the present invention for achieving the above object, an LED module consisting of a plurality of LED elements, a rotating body for supporting the LED module, and the rotation so that the rotating body is rotatable In the video playback method of the rotating display device comprising a body for supporting the whole rotation, and a motor installed on the body, the rotating body, the specific ID (ID) while each of the LED module is rotated In order to reproduce the entire image data (one complete still image) of the designated image frame to be displayed by the EL module designated by), each of the plurality of frames displayed by each LED module to overlap each other And transmitting the entire image data of the corresponding frame to the LED module.

On the other hand, the rotatable display device of the present invention for achieving the above object, at least one sensor is installed in a specific place near the outer case or the outer case, the viewer; And a controller configured to receive a viewer detection signal from the sensor and output a screen control signal to control a screen reproduced by the LED module.

On the other hand, the rotary display device of the present invention for achieving the above object, an outer case covering and protecting the LED module; A track sensing sensor installed on the outer case or body and sensing a track (sensing object) formed on the rotating body; And a control unit which receives the track detection signal from the track detection sensor, compares it with a normal value, and if it is out of the normal value, applies a warning signal to a warning device or applies a stop signal to the motor. .

As described above, according to the rotatable display device and the video playback method thereof, it is possible to prevent video interruption, to realize smooth video playback, to brighten the screen brightness, and to play video of high quality. It gives a sense of mystery, it is easy to attract viewers, facilitates viewers to watch, induces viewers' attention, outputs realistic sound and efficient sound, and monitors fine deviation of the rotational axis. When leaving, the operator can stop the device and take follow-up actions, thereby improving the safety and durability of the device, as well as having the effect of safely protecting the viewer from unforeseen large accidents.

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

2 is a diagram illustrating an example of a screen reproduced in a conventional rotating display device.

3 is a diagram showing a frame reproduced by the LED module of the conventional rotating display device in the order of time.

4 is a diagram illustrating a frame played in the LED module of the rotatable display device according to an exemplary embodiment of the present invention in order of time.

5 is a conceptual diagram illustrating a rotatable display device according to an exemplary embodiment of the present invention.

FIG. 6 is a diagram illustrating a problem of a video played in an LED module of a conventional rotating display device.

7 is a view showing the effect of the video played in the rotating display device according to an embodiment of the present invention.

8 is a flowchart illustrating a signal flow of the rotatable display device according to an exemplary embodiment of the present invention.

9 is a perspective view illustrating a rotatable display device according to still another preferred embodiment of the present invention.

10 is a plan view of FIG. 9.

11 is a conceptual diagram of FIG. 9.

FIG. 12 is a flowchart illustrating an example of a control method of the rotatable display device of FIG. 9.

13 is a perspective view illustrating a rotatable display device according to still another preferred embodiment of the present invention.

14 is a plan view of FIG. 13.

FIG. 15 is a plan view illustrating a state in which the viewer of FIG. 14 moves.

16 is a conceptual diagram of FIG. 13.

17 is a flowchart illustrating an example of a control method of the rotatable display device of FIG. 13.

18 is a conceptual diagram illustrating a rotatable display device according to still another preferred embodiment of the present invention.

19 is a perspective view illustrating a rotatable display device according to still another preferred embodiment of the present invention.

20 is a plan view illustrating the track sensor of FIG. 19.

21 is a top view of FIG. 19.

22 is another example of FIG. 21.

FIG. 23 is another example of FIG. 21.

(Description of Major Symbols in the Drawing)

1: LED element 2: LED module

3: rotating body 4: rotating shaft

5: motor 6: outer case

7: Body 8: Storage

9: control unit 10: video source data

11: Frame Data Extraction Section

12: entire image data generation unit of the corresponding frame for each frame

13: All image data generator of corresponding frame for each LED module

14: All video data allocation unit of corresponding frame for each LED module

15: Distribution Unit 16: Individual LED Controller

17: sensor 18, 181, 182: control unit

90: motor control unit 101: LED control unit

D, D ': Screen DS, DS': Center

81, 111, 121: sensor controller 82, 112: screen controller

811, 1111, 1211: detection sensor check unit A: detection area

H1, H2, H3: Viewers 812, 1112, 1212: Viewers Location Checking Unit

821, 1121: screen alignment unit 822: screen fixing unit

1122: screen follower 122: speaker controller

1221: speaker selection unit 1222: speaker output unit

130: speaker 4, 71: rotation axis

40: slip ring 41: rotating part

42: fixed part 50: power supply

60: power train 61: drive pulley

62: belt 63: driven pulley

5: motor 110: track

110a: reflective surface 120: track detection sensor

121: light emitting sensor 122: light receiving sensor

130: control unit 140: warning device

r: radius 110b: display portion

110c: List 110d: Darkness

Hereinafter, a rotating display device and a video playback method thereof according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings. Embodiments of the invention are not limited to what is shown in the accompanying drawings, it is to be understood that various modifications can be made within the scope of the same invention.

1 is a perspective view showing a rotating display device according to an embodiment of the present invention, Figure 4 is a frame played in the LED module of the rotating display device according to an embodiment of the present invention in the order of time 5 is a conceptual diagram illustrating a rotatable display device according to an exemplary embodiment of the present invention.

1, 4 and 5, the rotatable display device according to an embodiment of the present invention, the LED module 2 (light emitting device), the rotor 3 and the body 7 ) And the motor 5 and the control unit 9.

The LED module 2 is composed of a plurality of LED elements 1, the LED element 1 can be applied to all kinds of light emitting elements, preferably red (R), green (G), Blue (B) light source may be included.

In addition, the rotating body 3 is a structure for supporting the LED module 2 so that a plurality of the LED module 2 is disposed in the circumferential direction. Here, the rotating body 3 is to be rotated about the rotating shaft (4).

Meanwhile, in order to protect the rotating body 3 and the LED module 2 and protect the viewer, the rotating body 3 and the LED module 2 may be protected by an outer case 6. .

The body 7 is a non-rotating body fixed to the ground by rotatably supporting the rotating body 3 so that the rotating body 3 is rotatable.

The motor 5 is installed in the body 7 to rotate the rotor 3.

Particularly, as shown in FIG. 4, the controller 9 of the present invention applies a video signal to the LED element 1 according to the rotation angle of the LED module 2 and forms a video signal. When playing a particular image frame (N ^th Frame) of the frame, while each LED module 2 is rotated to display one image continuously while each LED module 2 is rotated at least one time, a specific ID ( Each of the plurality of frames displayed in each LED module so as to overlap each other so as to reproduce the entire image data (one complete still image) of the designated image frame to be displayed by the EL module designated by ID). It transmits the entire image data of the frame to the LED module of.

As illustrated in FIG. 5, the control unit 9 includes a frame data extractor 11, a frame-based full image data generator 12, an LED module-specific image data generator 13, and an LED. It is a configuration that can be made by including the entire image data allocation unit 14 for each module.

Here, the frame data extractor 11 extracts frame data from the input video source data 10.

In addition, the frame-by-frame whole image data generation unit 12 generates frame-by-frame whole image data.

In addition, the entire image data generation unit 13 for each LED module generates full image data for each LED module to be played by each LED module 2 according to the rotation angle of the LED module 2 in the entire image data for each frame. It is.

In addition, the full image data allocation unit 14 for each LED module allocates the full image data for each LED module to each LED module 2.

On the other hand, the control unit 9 may be connected to the distribution device 15 for distributing the all the video data for each of the LED module allocated to each of the LED module (2).

Here, the LED modules by the entire image data comprises N primary frame across the screen area that is not divided in the (N ^th Frame), having a length (L) and height (H) of Fig. 2 as shown in Figure 4 And some or Nth-order previous frames (N-1 ^th Frame, N-2 ^th Frame, N-3 ^th Frame, .....) or after N- ^th frame (N + 1 ^th Frame, N + 2 ^th Frame, of the N + 3 ^th Frame, .....), which it would be included in part.

For example, the first LED module 1W of the LED module 2 continuously reproduces the N ^th frames that are not divided from t0 to t8 according to the rotation angle.

In addition, as shown in FIG. 5, the controller 9 may be connected to the individual LED controller 16 and the entire image data storage unit 8.

Here, the individual LED controller 16, which is installed on the rotating body 3, is to be individually connected to each of the LED module (2).

In addition, the entire image data storage unit 8, which is installed in the rotating body (3), the individual LED controller 16 to transmit the entire image data for each LED module 16 to the individual LED controller 16 It is preferable to include a memory connected to each of the separately, and temporarily storing the entire image data for each LED module.

That is, since the entire video data for each LED module contains a huge amount of video frame information, a memory for temporarily storing the video data is required, and the entire video data storage unit 8 can perform this role.

In addition, since the individual LED controllers 16 must be able to transmit 60 pieces of image data per second, each of the data using a differential signal such as, for example, Low Voltage Differential Signaling (LVDS) or Digital Video Interface (DVI) signal. Since it can transmit and receive, it is possible to convert a light signal to high-speed data transmission.

In particular, as shown in FIG. 8, the flow of the video signal of the rotatable display device according to the present invention includes a video signal received from a PC, a TV, a DVD player, or other video player such as the entire LED module of the video processor. When the image data generation unit 13 generates the entire image data and performs image processing such as inverse gamma correction and low gradation representation, and the distribution device 15 transmits the individual LED controllers 16 of each LED module, Each of the individual LED controller 16 may further include a high speed frame data transmitter, a designated frame data extractor, a line data extractor, a data distribution device, and a driver IC controller.

Therefore, when the video playback method of the rotating display of the present invention is described, a video signal is applied to the LED element 1 according to the rotation angle of the LED module 2, and among the plurality of video frames constituting the video signal. When playing a specific video frame, each LED module 2 is rotated at least one or more times to display the full image data of the specific frame in which the specific LED module is played and individually displayed in each LED module. The entire image data is transmitted to the LED module 2 so that the afterimages overlap each other.

Therefore, for example, as shown in FIG. 7, the elliptical ball displayed in the N ^th frame may be displayed in its entirety, and the position in the N + 1 ^th frame may be determined. Even if it is moved, the whole is also displayed, and the same applies to the N + 2 ^th frame.

As a result, when the moving elliptical ball is reproduced, since the third LED module and the fourth LED module both delay and display the full image data, the afterimages are reproduced by being superimposed on each other. By preventing the phenomenon that occurs, the movement of the elliptical ball can be connected smoothly.

In addition, the LED module 2 of the present invention has the advantage that the brightness is greatly increased due to the afterimage effect because the delayed images of each frame are reproduced overlapping each other.

Therefore, it is possible not only to prevent screen interruption in a moving image but also to reproduce a clearer and brighter image.

9 is a perspective view illustrating a rotatable display device according to another exemplary embodiment of the present invention, FIG. 10 is a plan view of FIG. 9, and FIG. 11 is a conceptual view of FIG. 9.

9, 10 and 11 together, another preferred embodiment of the present invention will be described.

9 to 11, the rotatable display device according to another preferred embodiment of the present invention includes an LED module 2, a rotating body 3, a body 7, and a motor 5. ), And an outer case 6, a sensor 17 and a control unit 18.

Here, the LED module 2 is composed of a plurality of LED elements 1, the LED element 1 can be applied to all kinds of light emitting elements, preferably red (R), green (G) ), Blue (B) light source, etc. may be included.

In addition, the rotating body 3 is a structure for supporting the LED module 2 so that a plurality of the LED module 2 is disposed in the circumferential direction.

The body 7 is a non-rotating body fixed to the ground by rotatably supporting the rotating body 3 so that the rotating body 3 is rotatable.

The motor 5 is installed on the body 7 to rotate the rotor 3.

In addition, the outer case 6 covers and protects the LED module 2 and the body 7, and protects the viewer from the LED module 2 and the rotating body 3.

In particular, the sensor 17 of the present invention, which is installed at a specific place near the outer case 6 or the outer case 6, CCTV, infrared sensors, ultrasonic sensors, light sensors, artificial intelligence cameras, etc. Kinds of sensors are possible, but preferably at least one proximity sensor that detects the viewer's approach may be applied.

In addition, the controller 18 receives a viewer detection signal from the sensor 17 and outputs a screen alignment signal to align the position of the screen D reproduced by the LED module 2.

On the other hand, the control unit 18, if the viewer detection signal is not received, that is, when the viewer (H1) is located outside the detection area, the screen (D) to give the viewer a mystery and cause interest It is preferable to output the screen slow movement signal so that the position of the gradual movement is slow.

Here, the screen slow movement signal is transmitted to the motor control unit 90 of FIG. 11 to control the rotational speed of the motor 5, or the LED to move the screen slow programmatically All of them can be transmitted to the control unit 101.

When the rotational speed of the motor 5 is faster than the reference rotational speed (rotational speed when the screen is fixed), the screen rotates forward, and conversely, the rotational speed of the motor 5 is referred to as the reference rotational speed (rotational speed when the screen is fixed). Slower than that will cause the screen to reverse.

For example, to express 60 images per second, i.e., 60 Hz, on a fixed screen, if only one LED module 2 is used, the reference rotation speed is 60 times per second, but if 16 LED modules 2 are used, In this case, a fixed image can be obtained by dividing 3600 RPM into 16 and rotating it at a reference speed of 225 RPM, or 3.75 times per second.

At this time, the pitch (Pitch) representing the distance between the pixel and the pixel has a horizontal pitch that varies depending on the vertical pitch and the rotational speed designed from the time of manufacturing the LED module (2).

That is, at a rotational speed faster than the reference rotational speed, the horizontal pitch becomes smaller, so that the width of the screen becomes shorter, and the screen gradually moves in one direction. At a rotational speed that is slower than the reference rotational speed, the horizontal pitch becomes larger, As it widens, the screen may slowly move in the reverse direction.

Therefore, the control unit 18 can control the movement and the moving speed of the screen using this principle.

On the other hand, as shown in Figure 10 and 11, the control unit 18, when the viewer (H2) is located in the detection area (A) to receive a viewer detection signal, the rotational speed of the motor (5) The screen alignment signal may be transmitted to the motor controller 90 to control the screen alignment signal, or the screen alignment signal may be transmitted to the LED controller 101 to control the movement of the screen D.

In addition, as illustrated in FIG. 11, the controller 18 includes a sensor controller 81 and a screen controller 82. The sensor controller 81 may include a sensor (a viewer signal generated). 17 is to determine the position of the viewer (H2) in the detection area (A) in accordance with the detection sensor confirmation unit 811 for confirming the position of the sensor 17 and the intensity or type of the viewer detection signal generated by the sensor (17) It may include a portion 812.

In addition, the screen controller 82 may arrange a screen arrangement unit for aligning the position of the screen D such that the viewer H2 in the sensing area A of FIG. 10 may view the center DS of the screen D. The screen fixing unit 822 may fix the screen D arranged according to the viewing position of the viewer H2 based on the viewer H2.

Therefore, when the screen alignment method of the rotatable display device according to the preferred embodiment of the present invention is described, as shown in FIG. 12, the display using the rotatable display device according to the preferred embodiment of the present invention starts. When the viewer H1 is located outside the sensing area A, the screen is rotated while being rotated at low speed to induce the viewer's attention (D1).

Subsequently, when the viewer is detected in the sensing area A (D2), the screen is aligned so that the screen center DS faces the viewer (D3), and the viewer is fixed by fixing the screen at the aligned position or the viewer's position. To facilitate (D4).

Subsequently, it is possible to check whether the viewer is detected in the detection area A (D5) to fix the screen continuously while the viewer is detected (D4), and if the viewer is not detected in the detection area A, The screen may be moved at a low speed to induce interest (D1).

FIG. 13 is a perspective view illustrating a rotatable display device according to another exemplary embodiment of the present invention, FIG. 14 is a plan view of FIG. 13, FIG. 15 is a plan view showing a state in which the viewer of FIG. 14 is moved, and FIG. 16. 13 is a conceptual diagram of FIG. 13, and FIG. 17 is a flowchart illustrating an example of a control method of the rotatable display apparatus of FIG. 13.

13 to 17, another preferred embodiment of the present invention will be described.

As shown in FIGS. 13 to 17, a rotatable display device according to another exemplary embodiment of the present invention includes an LED module 2, a rotating body 3, a body 7, and a motor 5. And an outer case 6, a sensor 17, and a control unit 181.

Here, the control unit 181 receives a viewer detection signal from the sensor 17 and outputs a screen alignment signal to align the position of the screen D reproduced by the LED module 2.

Meanwhile, as illustrated in FIGS. 13 and 15, the controller 181 controls the rotational speed of the motor 5 when the viewer H3 moves from the position of FIG. 14 to the position of FIG. 15. The screen following signal may be transmitted to the motor controller 90, or the screen following signal for controlling the movement of the screen D (D ′) may be transmitted to the LED controller 101.

That is, as shown in FIG. 16, the control unit 181 includes a sensor control unit 111 and a screen control unit 112, and the sensor control unit 111 may include a sensor (a viewer detection signal generated) ( 17 includes a sensor detecting unit 1111 for checking the position of the viewer and a viewer position checking unit 1112 for checking the position of the viewer H3 according to the strength or type of the viewer detection signal generated by the sensor 17. It can be done by.

In addition, as illustrated in FIG. 14, the screen controller 112 may include a screen alignment unit for aligning the position of the screen D such that the viewer H3 may view the center DS of the screen D. 821) and as shown in FIG. 15, when the viewer H3 moves, a screen follower that follows the screen to the screen D 'in the direction of the viewer according to the movement of the viewer H3 when the viewer H3 moves. And a screen follower 1122 for outputting a signal.

Therefore, referring to the screen tracking method of the rotary display device according to another preferred embodiment of the present invention, as shown in FIG. 17, the display using the rotary display device according to the preferred embodiment of the present invention starts. When the screen is rotated at a low speed to induce the viewer's attention (D11),

Next, when the viewer's position is confirmed (D12), the screen is aligned so that the screen center DS faces the viewer (D3), and the screen D is followed by the viewer H3 (D14). Even if the user moves to D15, the user moves to the screen D 'to facilitate viewing of the viewer (D16).

Subsequently, while the viewer H3 is detected, the screen D 'may be continuously followed to the viewer H3 (D17).

18 is a conceptual diagram illustrating a rotatable display device according to still another preferred embodiment of the present invention.

Referring to Fig. 18, another preferred embodiment of the present invention will be described.

As shown in FIG. 18, the rotatable display device according to another preferred embodiment of the present invention is installed at a specific place near the outer case 6 or the outer case 6 described above, and outputs an acoustic signal at least. At least one speaker 130 and a control unit 182 for controlling the speaker 130 is further configured.

Here, the controller 182 receives the viewer detection signal from the sensor 17 and outputs a sound signal to at least one speaker 130 close to the viewer.

That is, as shown in FIG. 18, the control unit 182 includes a sensor control unit 121 and a speaker control unit 122. The sensor control unit 121 may include a sensor (eg, a viewer detection signal generated). And a viewer position confirming unit 1212 for confirming the position of the viewer according to the strength or type of the viewer sensing signal generated by the sensor 17. have.

In addition, as illustrated in FIG. 18, the speaker controller 122 may include a speaker selector 1221 for selecting at least one speaker 130 close to the viewer and a speaker for outputting an acoustic signal to the selected speaker 130. It may include an output portion 1222.

Here, when the sound signal is a multi-channel sound signal such as stereo and surround, the speaker output unit 1222 may differentially output the intensity of the sound signal to the selected speaker 130 in consideration of the position of the viewer. Do.

That is, for example, when two speakers 130 close to the viewer are selected for stereo reproduction, the sound signal of the relatively close speaker (for example, the left speaker) may be adjusted so that the viewer can hear a uniform sound from side to side. It is desirable to reduce the strength and to increase the strength of the acoustic signal of a relatively distant speaker (for example, the right speaker).

19 is a perspective view illustrating a rotatable display device according to an exemplary embodiment of the present invention, FIG. 20 is a plan view illustrating the track sensor of FIG. 19, and FIG. 21 is a plan view of FIG. 19.

19 to 21 together, another preferred embodiment of the present invention will be described.

As shown in FIGS. 19 to 21, a rotatable display device according to still another preferred embodiment of the present invention includes an LED module 2, a rotating body 3, a body 7, and a motor ( 5), the outer case 6, the track detection sensor 120 and the control unit 130 is configured to include.

Here, the LED module 2 is composed of a plurality of LED elements 1, the LED element 1 can be applied to all kinds of light emitting elements, preferably red (R), green (G) ), Blue (B) light source may be included.

In addition, the rotating body 3 is a rotating body that rotates at a high speed around the center of rotation of the rotating shaft 4, so that the plurality of the LED module 2 is disposed in the circumferential direction is the LED module ( 2) supporting structure.

The body 7 is a non-rotating body fixed to the ground by rotatably supporting the rotating body 3 so that the rotating body 3 is rotatable.

In addition, the motor 5 is installed in the body 7 to rotate the rotating body 3 via the power transmission device 60.

Here, as shown in FIG. 19, the power transmission device 60 may be applied to various types of power transmission devices such as gears and chains. Preferably, the power transmission device 60 may be provided on the rotation shaft 4 of the rotating body 3. Belts such as a driven pulley 63 to be installed, a drive pulley 61 installed on the rotary shaft 71 of the motor 5 and a timing belt connecting the driven pulley 63 and the drive pulley 61 ( 62).

In addition, the outer case 6 covers and protects the LED module 2 to protect the viewer from the LED module 2 and the rotating body 3 rotating at high speed.

In particular, the track sensor 120 of the present invention is installed on the outer case (6) or the body (7), the sensing object of various forms, such as lines, dots, lines, surfaces formed on the rotating body (3) As detecting the track 110 of the rotating target, any type of sensor such as an infrared sensor, a laser sensor, a magnetic sensor, a proximity sensor, a contact switch, and the like may be applied, but preferably, as shown in FIG. 20. And a light emitting sensor 121 for irradiating direct light to the reflective surface 110a of the track 110 and a light receiving sensor 122 for receiving the reflected light reflected from the reflective surface 110a of the track 110. It is preferable.

Here, as shown in FIG. 21, the track 110 is preferably a circular track 110 formed on the upper surface of the rotating body 3 and having the same radius r from the center of rotation.

On the other hand, the control unit 130 receives the track detection signal from the track detection sensor 120 and compares with the normal value, when the deviation from the normal value or there is no track detection signal, by applying a warning signal to the warning device 140 The operator can follow up or apply a stop signal to the motor 5 to automatically stop the operation.

That is, when the rotation axis of the rotating body 3 is twisted, vibration occurs, the track 110 is out of the detection area of the track sensor 120 and an abnormal signal is transmitted through the track sensor 120. When the signal is applied to the controller 130, the controller 130 applies a warning signal to the warning device 140 when the abnormal signal or the non-signal detection signal is out of the normal value or there is no track detection signal. .

Here, the warning device 140 is a display device, a warning device that can be alerted to the worker by warning or alarming the abnormal rotation state of the rotating body 3 by receiving a warning signal from the control unit 130 by wire or wirelessly , Horns, etc. may be applied.

In particular, as shown in Figure 20, the warning device 140, a mobile phone for displaying an SMS text warning signal on a worker computer or a portable screen that displays a warning signal on the screen via a network, such as the Internet using TCP / IP It is possible to be a portable information terminal.

Therefore, not only a short-range worker but also a remote worker can monitor an abnormality through an information terminal such as a computer or a mobile phone connected by wire or wirelessly. It can be.

22 is another example of FIG. 21, and FIG. 23 is another example of FIG. 21.

As shown in FIGS. 22 and 23, the track 110 may display the display portion 110b of FIG. 22 or the roll 110c / arm portion of FIG. 23 so as to measure the rotational speed of the rotor 3. 110d) may be formed.

In addition, the controller 130 detects the display unit 110b or the roster 110c / arm unit 110d and applies a rotational speed signal to the warning device 140 according to the detected number, so that the operator monitors it. It is also possible.

Meanwhile, a slip ring 40 connected to the power supply device 50 and having a rotating part 41 and a fixing part 42 may be installed on the rotating shaft 4 of the rotating body.

Here, the slip ring 40 is configured to supply power to the rotating body from the fixed body using a liquid metal or the like.

The slip ring 40 is sensitive to the detachment of the rotating body 3, and before the slip ring 40 is damaged by using the above-described track sensor 120 and the control unit 130, an accident may be in advance. It can be prevented.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, according to the rotatable display device and the video playback method thereof, it is possible to prevent video interruption, to realize smooth video playback, to brighten the screen brightness, and to play video of high quality. It gives a sense of mystery, it is easy to attract viewers, facilitates viewers to watch, induces viewers' attention, outputs realistic sound and efficient sound, and monitors fine deviation of the rotational axis. When leaving, the operator can stop the device and take follow-up actions, thereby improving the safety and durability of the device, as well as having the effect of safely protecting the viewer from unforeseen large accidents.

Claims (20)

A plurality of LED modules comprising a plurality of LED elements; A rotating body supporting the LED module; A body supporting the rotational body so that the rotational body is rotatable; A motor installed in the body to rotate the rotating body; And While each of the LED modules rotates, the full image data of a specific frame on which a specific LED module is reproduced is individually delayed to correspond to the respective LED modules so that the afterimages displayed on each LED module overlap each other. And a control unit which transmits the entire image data of the frame. The method of claim 1, The control unit, A frame data extractor which extracts frame data from the input video source data; A frame-by-frame whole image data generator for generating frame-by-frame whole image data from the frame data; An entire image data generation unit for each LED module for generating the entire image data for each LED module to be played by each LED module according to the rotation angle of the LED module in the entire image data for each frame; And And all video data allocation unit for each LED module for allocating the entire video data for each LED module to each LED module. The control unit is connected to the distribution device for distributing the entire image data for each LED module to each LED module. The method of claim 2, The entire image data for each LED module, And a part of a frame before the Nth frame or a portion of the frame after the Nth frame, including the entire screen area of the Nth frame. The method of claim 1, The control unit, An individual LED controller installed on the rotating body and individually connected to each of the LED modules; And An entire image data storage unit installed in the rotating body and individually connected to the individual LED controllers so as to transmit the entire image data for each LED module to the individual LED controllers, and temporarily storing the entire image data for each LED module. Rotating display device, characterized in that connected to. The method of claim 1, The control unit, And a separate LED controller mounted on the rotating body and individually connected to each of the LED modules to communicate with each other using a differential signal or optical communication for high-speed data transmission (1.5 Gbps or more). An LED module comprising a plurality of LED elements, a rotating body for supporting the LED module, a body for supporting the rotating body so that the rotating body is rotatable, and a motor installed in the body and rotating the rotating body. In the video playback method of the rotary display device comprising a; While each of the LED modules rotates, the full image data of a specific frame on which a specific LED module is reproduced is individually delayed to correspond to the respective LED modules so that the afterimages displayed on each LED module overlap each other. A video playback method of a rotating display device, characterized in that for transmitting the entire image data of the frame. The method of claim 1, At least one sensor installed at a specific place near the outer case or the outer case and detecting a viewer; And A controller which receives a viewer detection signal from the sensor and outputs a screen control signal to control a screen reproduced by the LED module; Rotating display device, characterized in that further comprises. The method of claim 7, wherein The control unit, when the viewer detection signal is not received, the rotating display device, characterized in that for outputting the screen slow movement signal to move the position of the screen at a low speed. The method of claim 7, wherein The control unit, when the viewer detection signal is applied to the rotating display device, characterized in that for transmitting the screen alignment signal to the motor control unit to control the rotational speed (RPM) of the motor. The method of claim 7, wherein The control unit, when receiving the viewer detection signal, the display device, characterized in that for transmitting the screen alignment signal to the LED control unit to control the movement of the screen. The method of claim 7, wherein The control unit, Including a sensor controller and a screen controller, The sensor control unit, A sensor detection unit for checking the position of the sensor where the viewer detection signal is generated and the strength or type of the signal; And And a viewer location determiner that checks the location of the viewer according to the strength or type of the viewer detection signal generated by the sensor. The screen control unit, A screen alignment unit for aligning the screen so that the viewer can see the center of the screen; And And a screen fixing unit configured to output a screen fixing signal for fixing the screen arranged according to the viewing position of the viewer based on the viewer. The method of claim 7, wherein The control unit, Including a sensor controller and a screen controller, The sensor control unit, A sensor detection unit for checking the position of the sensor where the viewer detection signal is generated and the strength or type of the signal; And And a viewer location determiner that checks the location of the viewer according to the strength or type of the viewer detection signal generated by the sensor. The screen control unit, A screen alignment unit for aligning the screen so that the viewer can see the center of the screen; And And a screen follower for outputting a screen following signal for following the screen so that the screen aligned in the direction of the viewer is moved according to the movement of the viewer. The method of claim 7, wherein And at least one speaker installed at a specific place near the outer case or the outer case and outputting an audio signal. The control unit, It includes a sensor control unit and a speaker control unit, The sensor control unit, A sensor detection unit for checking the position of the sensor where the viewer detection signal is generated and the strength or type of the signal; And And a viewer location determiner that checks the location of the viewer according to the strength or type of the viewer detection signal generated by the sensor. The speaker control unit, A speaker selector configured to select at least one speaker close to the viewer's position; And And a speaker output unit configured to differentially output a sound signal to another speaker to the selected speaker. The method of claim 1, An outer case covering and protecting the LED module; A track sensing sensor installed on the outer case or body and sensing a track (sensing object) formed on the rotating body; And A control unit which receives a track detection signal from the track detection sensor, compares it with a normal value, and applies a warning signal to a warning device or applies a stop signal to the motor when the track detection signal is out of the normal value; Rotating display device, characterized in that further comprises. The method of claim 14, The track sensor includes a light emitting sensor for irradiating direct light on the reflective surface of the track; And A light receiving sensor receiving the reflected light reflected from the reflecting surface of the track; Rotating display device, characterized in that comprises a. The method of claim 14, And the track is formed on the upper surface of the rotating body and is a circular track having the same radius from the center of rotation. The method of claim 14, The track may include a display unit or a roll / arm unit configured to measure the rotational speed of the rotating body, and the controller may detect the display unit or the roll / arm unit and provide a rotation speed signal to the warning device according to the detected number. Rotating display device, characterized in that for applying. The method of claim 14, The rotating body has a rotating portion and a fixed portion, a rotatable display device, characterized in that the slip ring (slip ring) is connected to the power supply is installed. The method of claim 14, The warning device may be any one of a display device, a warning device, a warning device, and combinations thereof, which may receive a warning signal from the controller in a wired or wireless manner to notify an operator of an abnormal rotation state of the rotating body by warning or warning. Rotating display device, characterized in that made by selecting. The method of claim 14, The warning device is a rotatable display, characterized in that a portable information terminal such as a mobile phone displaying an SMS text warning signal on a worker computer or a portable screen displaying a warning signal on the screen via a network such as the Internet using TCP / IP. Device.

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