WO2020175861A1

WO2020175861A1 - Apparatus for synchronizing frame change point and location of screen according to rotation speed of rotary display

Info

Publication number: WO2020175861A1
Application number: PCT/KR2020/002555
Authority: WO
Inventors: 채균; 박지훈; 박희범
Original assignee: 주식회사 이노벡스
Priority date: 2019-02-28
Filing date: 2020-02-21
Publication date: 2020-09-03
Also published as: KR102020797B1

Abstract

The present invention relates to an apparatus for synchronizing a frame change point and a location of a screen according to rotation speed of a rotary display so as not to form an inflection point in an image when the image is output using the rotary display by changing an output time of a frame and an output holding time of a frame according to the rotation speed of the rotary display, and by synchronizing the frame and the location of the screen.

Description

2020/175861 1»（：1/10公020/002555 Specification

Name of the invention: A device for synchronizing the position of the screen with the frame change point according to the rotational speed of a rotary display

Technical field

[1] The present invention provides a frame change point according to the rotational speed of a rotating display and

It is about the position synchronization device of the screen.

四

Background

[3] Rotating display device Various characters by the effect of the afterimage of the human eye by rotating the module 1) 1) in which a number of high schools 1) are arranged one-dimensionally, and flashing a number of 1^1) at the same time. ,Graphics or video playback device, rotating

The afterimage effect used in the display device refers to the optical illusion of the eye, which is regarded as one moving image when a series of still images are moving at high speed.

[4] Conventional such rotary display devices are of various shapes.

Some examples of display devices are, such as Korean Patent Publication No. 2006-0030596, 1 high school 1) a blade type in which the module is arranged like the blades of an electric fan and rotates, and 1 Note 1) There is a cylindrical type in which the module is placed on the outer peripheral surface of the cylinder in the vertical direction and rotates.

[5] Figure 1 shows a cylindrical display of the above-described rotary display device. As shown in Fig. 1, the cylindrical display has a main body 10 that does not rotate, a motor 21 coupled to the main body 10, a rotating body 20 rotating by the motor 21, the It is formed on the upper part of the rotating body 20 to control the operation of a plurality of 1st high 1) bars 30 and the 1st high 1) bars 30 that output an image while rotating.

It may include a control unit (not shown).

[6] As shown in Fig. 1, the 1st high 1) the bar 30 is a support 31 extending upwardly on the upper part of the rotating body 20 and the 1st high 1 coupled to the outside of the support 31 ) To (32)

It consists of a single high school 1) 1 high school 1) (32) installed in the bar (30) is stored in advance or

Outputs frames of video transmitted in real time. Multiple first high school 1) bar (30)

Frames of the image are sequentially output according to the rotational speed of the rotating body (20).If the speed of the conventional rotating body (20) is faster or slower than the set speed, the inflection point in the image output from the first high 1) bar (30) There is a problem that a normal image is not output due to the problem.

[7]

Detailed description of the invention

Technical task

[8] This invention was devised to solve the above-mentioned problems, 2020/175861 1»（：1/10公020/002555 The purpose of the frame change point according to the rotational speed of the rotating display according to the invention and the position synchronization device of the screen is the output time of the frame according to the rotational speed of the rotating display and The frame change point according to the rotational speed of the rotational display and the screen's rotational speed to prevent the formation of an inflection point in the image when outputting an image using a rotational display by changing the frame's output hold time. It is to provide a position synchronization device.

[9]

Problem solving means

[1] The rotation type according to the present invention to solve the above problems

The device for synchronizing the position of the screen with the frame change point according to the rotational speed of the display includes a main body, a rotating body that rotates by being coupled to the main body, and a 1) bar that is formed on the rotating body and rotates to output a frame of an image. In a frame change point according to the rotational speed of the included rotational display and the position synchronization device of the screen, a rotational speed measurement unit that measures the rotational speed of the rotational body and the rotational speed of the rotational body measured by the rotational speed measurement unit It is characterized by including a control unit that changes the output time of a frame output from a single bar 1) according to the above.

[11] In addition, the rotational speed measurement unit measures the unit rotation time it takes for the rotation body to rotate one rotation, and the control unit 1) so that the bar outputs a single frame during the unit rotation time. 1) It is characterized by controlling the bar.

[12] In addition, the first high school 1) bar is at least one or more, and the control unit controls the first high school 1) bar so that the first high school 1) bar starts outputting the frame at the same position.

[13] In addition, the rotational speed of the rotating body measured by the rotational speed measuring unit is

If the number of frames that can be expressed in the 1st high1) bar is less than the reference value and is less than the number of frames of the image scheduled to be played back, the control unit is in the 1st high1) bar during the unit time of the frames of the image to be played. The feature is to control the bar above 1) so as not to reproduce frames that cannot be output.

[14] In addition, the rotational speed of the rotating body measured by the rotational speed measuring unit

If the number of frames that are higher than the reference value and can be expressed during the unit time in the first high school 1) bar is greater than the number of frames of the image to be played back, the control unit may output at least two consecutive frames of the image to be played back. Note 1) It is characterized by controlling the bar.

[15] In addition, the reference value of the rotational speed of the rotating body is obtained by the following equation.

Characterized by

2020/175861 1»（：1^1{2020/002555

[17] In addition, the rotary display receives an image to be played back and receives a frame.

An image processing block that is arranged and transmitted in order, and a display block that receives and outputs the frame data arranged from the image processing block to the 1) bar, wherein the control unit is configured from one of the image processing block and the display block. It features control to change the time and position of the frame output from the first high school 1) bar.

Effects of the Invention

[18] According to the rotational speed of the rotary display according to the present invention as described above

According to the frame change point and the position synchronization device on the screen, the control unit adjusts the start position of the frame output from the 1^1) bar and the frame output holding time according to the rotation speed of the rotating body measured by the rotation speed measurement unit. Even if the rotational speed of the rotating body changes, there is an effect of outputting an image that does not have an inflection point.

[19]

Brief description of the drawing

[2] Fig. 1 is a perspective view of a cylindrical rotary display.

[21] Figure 2 is a cylindrical shape controlled by the synchronization device according to the first embodiment of the present invention.

Schematic diagram of the state of viewing the rotating display from the top and the output of the frames.

[22] Figure 3 is a cylindrical shape controlled by the synchronization device according to the first embodiment of the present invention.

A block diagram of a frame when the rotational speed of the rotating body of the rotating display is faster than the reference value.

[23] Figure 4 is a cylindrical shape controlled by the synchronization device according to the first embodiment of the present invention

A block diagram of a frame's force when the rotational speed of the rotating body of the rotating display is slower than the reference value.

[24] Figure 5 is a rotary type controlled by the synchronization device according to the first embodiment of the present invention

Schematic diagram of the frame data processing process of the display.

[25] Figure 6 is a rotary type controlled by the synchronization device according to the second embodiment of the present invention

Schematic diagram of the frame data processing process of the display.

Best mode for carrying out the invention

[26] Rotation of the rotary display according to the present invention with reference to the accompanying drawings

It will be described in detail with respect to preferred embodiments of the frame change point according to the speed and the position synchronization apparatus of the screen.

[27] According to the first embodiment of the present invention, the frame change point according to the rotational speed of the rotational display and the position synchronization device of the screen (hereinafter, the synchronization device) controls the operation of the cylindrical rotational display shown in FIG. For this reason, a frame change point according to a rotational speed of a rotary display and a position synchronization apparatus of a screen according to an embodiment of the present invention will be described below with reference to FIG. 1. 2020/175861 1»（：1^1{2020/002555

[28] The synchronization device according to the first embodiment of the present invention includes a rotation speed measurement unit and a control unit.

Can include

[29] The rotational speed measurement unit measures the rotational speed of the rotational body 20 shown in Fig. 1, a kind of sensor that detects the rotational speed of the motor 21 that rotates the rotational body 20, and measured by the sensor. It may include a communication module that can transmit the rotational speed information of the rotational body (20) to the outside. The rotational speed of the rotational body (20) measured by the rotational speed measurement unit can be provided in the form of a rotational speed per minute (panbe). .

[3 This control unit measures the rotation speed of the rotation body (20) or the motor (21)

Depending on the rotational speed, the output time and output hold time of the frame output from the single high 1) bar (30) are changed.

[31] The operation of the above-described control unit will be described with a specific example. First, as shown in Fig. 1, in the synchronization apparatus according to the first embodiment of the present invention, the frame change point and the position of the screen are synchronized. The rotary display can include a total of four internal I) bars (30), and each one high 1) bar (30) rotates with the rotating body (20) and outputs the frames of the image.

[32] Figure 2 is a view of the cylindrical rotary display device from the top

At the same time, it schematically shows a situation in which a frame is output in a normal situation.

[33] As shown in Edo, the four 1st high school 1) bars are each 11th high 1) bar (30 books,

It is divided into 21st grade 1) bar (30 p, 31st high 1) bar (300 and 41st high 1) bar (301)). As shown in Fig. 11, the 11th high 1) bar (30 is from the top). When looking at the rotary display, the bar 301 on the lower side, the 21st high () bar (30 is on the left human hair 2, the 31st high [) bar (300 is the upper human hair 3, and the fourth inner 1) bar (301)) It is located on the right human hair 4. Each 1st high school 1) Bareul clock

It rotates in the opposite direction, and the position is defined as the starting position of the screen, and the state of the diagram is assumed to be the position at point II.

[34] As shown in Fig. ¾, the 1st to 4th frames are 11 high bars (30 shows), respectively,

The 21st period 1) bar (30 p, 31st high 1) bar (300 and 41st high 1) bar (301)) is sequentially output. At a point prior to point II, the frame data is in accordance with the first embodiment of the present invention. It is input to the rotary display controlled by the synchronization device. After that, at the point II, the first frame is output at the 11th bar (in the 30th, the start position of the screen is the first frame, and the first frame is output before the 15th point). Keep doing.

It rotates 90 degrees counterclockwise from the point II and is located at the start position of the screen at 12 o'clock, the 21st high I) bar (30 p starts to output the second frame, and keeps outputting the second frame until 16 o'clock) In this way,

The 31st high I moved to the position from the 13th point I) bar (300 starts to output the third frame and keeps it until the 17th point, and the 41st high 1) bar (301) that moves from the 14th point to the position outputs the fourth frame. Start and hold until 18 o'clock.

[35] Based on the point II, the fifth frame is taken at the 15th point where the bar rotates 1). As described above, until one LED bar outputs another frame from T1 to T5 as described above (until it returns to the starting position of the screen), the output state of the frame that started output should be maintained, and each of the LED bars P1, the position to start outputting this frame, must be the same.

[36] The rotational speed of the rotating body 20, that is, the time taken from the point T1 to the point T5

If the LED bar is the same, it is necessary to repeatedly output the frames at a certain period, but if the rotational speed varies due to external or other factors, the starting position of the screen may be changed and the inflection point as mentioned in the background technology may occur. For this reason, the control unit prevents the occurrence of an inflection point by adjusting the position at which the frame output starts and the frame output retention time in the LED bar according to the rotation speed measured by the rotation speed measurement unit.

[37] As in the operating embodiment shown in Fig. 2, during one rotation in a single LED bar

When maintaining the output state of the frame, the rotating body 20 can output the same number of frames as the number of LED bars during one rotation. Frame-rate of the video to be played back (1 second) When the number of frames that can be expressed during the period, expressed in fps or Hz) is N Hertz (Hz), to express all frames of the image to be played back without time error, the rotating body (20) can be expressed for 1 second. The number of frames and the frame-rate of the image must match. For example, the frame-rate of the image to be played back is said to be 60 Piz, and the rotating body 20 has four LED bars as in the present embodiment shown in FIG. If included, the rotating body must rotate as much as the number of times the frame-rate of the image is divided by the number of LED bars for 1 second, so it must rotate 15 times per second, and the rotating body 20 must rotate at 900 rpm. If this is expressed as an equation, it is as follows.

[38]

[39] The rotation 111 of the rotating body 20 obtained by the above equation may be the reference rotation speed, and in this embodiment, the reference rotation speed is assumed to be 900 111. When the rotation speed of the rotating body 20 is 900 111 ,The time it takes for the rotating body 20 to rotate once and return the bar to the same position, that is, the time from the point II to the point of 15

It is 1/15 second, and the control unit starts the frame output from the single high school 1) bar located at the start position of the image, and at the same time, the frame starts output from the 1 high school 1) bar, and then the rotating body ( It is possible to control 1 high 1) bars to maintain the output state for 1/15 second, which is the time it takes to rotate 1 of 20).

[4, that is, based on Figure 2, the control unit is based on the measured rotation of the rotating body (20) 111

When the rotational speed is greater or less than the rotational speed, i.e. the rotation body 20 maintains the output of the frame in a single bar according to the time interval from ¾ to 1¾+4 (11 is a natural number greater than 1), which is the time it takes for one rotation. Adjust the time.

[41] For example, due to external factors, the rotation speed of the rotating body 20 2020/175861 1»（：1^1{2020/002555

Suppose you have a 960 111, which is faster than a 900 111.

By measuring the rotation speed of the rotating body 20, the rotation speed information is notified to the control unit, and the control unit calculates the time it takes for the rotating body 20 to rotate once. Since the 960 111 rotates 16 times per second, the time it takes for the rotating body 20 to rotate 1 is 1/16 seconds. Therefore, the control unit outputs from a single high 1 bar according to the rotation speed of the rotating body 20. By setting the holding time of the frame to be 1/16 seconds, the frames output from all 1 ⁾ bars can be output at the same position. In this case, the number of frames that the rotating body (20) can express in 1 second is It can be obtained by multiplying the number of rotations per second of the rotating body 20 by the number of bars formed in the rotating body 20. Since the rotating body 20 rotates 16 times per second, 1 bar is It can express 64 frames around 4 days. However, when the image input to the rotating body (20) is calculated as low and frame, the time it takes for the rotating body (20) to rotate to express 4 frames (hereinafter referred to as blank time) Can express

In this case, the control unit outputs at least two consecutive frames of the video to be played back in order to fill in the blank time.

[42] FIG. 3 schematically shows a state viewed from the top of the cylindrical rotating display device when the rotational speed of the rotating body 20 is faster than the reference value, and also schematically illustrates a situation in which a frame is output, as described above. The process will be described with reference to FIG. 3.

[43] As shown in Fig. 2, the 11th sentence 1) the 30th, the 21st high school 1) the 30th, the 31st period 1) the bar (300 and the 41st period 1) bar 301) are sequentially If the output from the first frame to the fourth frame is the output in the normal state where the rotational speed of the rotating body 20 is 900^111, as described above, if the rotational speed of the rotating body 20 is 960 111, FIG. As stated, the 11th high school 1) bar (30 West and 21st high school 1) bar (the first frame is output in a row of 30, and the 3rd 1) bar (300th and 4th 1) bar 301) By sequentially outputting the second frame and the third frame, you can fill in some of the blank time. If the control unit repeats this operation three more times per second, the blank time is all filled up, including four high school 1) bars, but rotating The number of frames that can be expressed with a speed of 960^111 rotating body (20) and the frame-rate of the image can be matched. The control unit is the same frame output from the continuous 1止1) bar (the same frame as the first frame in Fig. 3). ) Can be specified in advance, or the frame can be specified according to the transmission speed of the video.

[44] As another example, it is assumed that the rotational speed of the rotating body 20 is 840^111, which is slower than the reference rotational speed of 900 111 due to external factors. Likewise, the rotational speed measuring unit measures the rotational speed of the rotating body 20. It measures and informs the rotation speed information to the control unit, and the control unit calculates the time it takes for the rotating body 20 to rotate once. Since 840 111 rotates 14 times per second, the time it takes for the rotating body 20 to rotate 1 is 1/14 seconds. The control unit sets the holding time of the frame output from a single high school 1 ⁾ bar to 1/14 second according to the rotation speed of the rotating body 20, and the frames output from all 1 ⁾ bars are In this case, the number of frames that the rotating body 20 can express in 1 second is 56 by multiplying 14, the number of rotations per second, by 4, the number of LED bars. However, since the image input to the rotating body 20 is 60 Hz, 4 of the 60 frames of the image cannot be expressed. In this case, the control unit uses a method of not outputting some of the frames of the image to be played.

[45] FIG. 4 schematically shows a state viewed from the top of a cylindrical rotating display device when the rotational speed of the rotating body 20 is slower than the reference value, and also schematically illustrates a situation in which a frame is output, as described above. The process will be described with reference to FIG. 4.

As shown in FIG. 2, the first LED bar 30A, the second LED bar 30B, the third LED bar 30C, and the 41st D bar 30D sequentially output from the first frame to the fourth frame. What is to do is if the rotational speed of the rotating body 20 is at a steady state output of 900rpm, when the rotational speed of the rotating body 20 is 840rpm as described above, as shown in FIG. ) Is the first frame, the 21st D bar (30B) skips the second frame and outputs the third frame, and the 31st D bar (30C) and the 4th LED bar (30D) each output the fourth and fifth frames in sequence. That is, by skipping the second frame without outputting it, the number of frames scheduled to be played back can be increased.

If you do not output 4 frames by repeating this process 3 more times per second, you can match the number of frames that can be expressed with the rotating body 20 including 4 LED bars and the frame rate of the image. The control unit may pre-designate a frame to be passed to the next frame without output (corresponding to the second frame in FIG. 4), or may designate the frame according to the transmission rate of the image.

[47] As described above, if the rotation speed of the rotating body 20 is different, the position at which the frame starts to be output from a single LED bar can be changed. The control unit uses a separate sensor to change the frame from the single LED bar. When the position where the output starts is detected and the corresponding position is changed from P1, which is the starting position of the screen, the frame is not output from a specific LED bar, and the next frame is displayed when the next LED bar is located at the starting position of the original screen. It can be output, in which case the output of one or more frames may be missed.

5 is a rotary type controlled by the synchronization device according to the first embodiment of the present invention

It schematically shows the frame data processing process of the display.

[49] As shown in Fig. 5, in the synchronization apparatus according to the first embodiment of the present invention

The controlled rotary display may include an image processing block 100 and a display block 200.

[5] As shown in FIG. 5, the image processing block 100 receives data of an image to be played back and arranges the frames of the image in order. The control unit rotates the body 20 measured by the rotational speed measurement unit. ) Of the three first memory frames in the image processing block 100 according to the rotational speed (corresponding to the sensor event information in Fig. 5). 2020/175861 1» (：1^1{2020/002555 block 110) (MFB 1, MFB2, MFB3) is used to sort the frames of the video. In this case, the meaning of sorting the frames means that the single 1止1 ⁾ bar. The frame starts to output

The image processing block 100 transmits the aligned frame data to the display block 200 using the three first memory frame blocks, and the display block 200 has eight According to the frame data aligned using the second memory frame block 210 (MFB2, MFB8), the 1st to 41st high school 1 ⁾ bars (, ?2, module 3, module 4) are operated.

6 is a rotary type controlled by the synchronization device according to the second embodiment of the present invention

It schematically shows the frame data processing process of the display.

[52] The second embodiment of the present invention shown in FIG. 6 is the same as that shown in FIG.

Unlike the first embodiment, the image processing block 100 does not align the frame data of the image and simply passes it to the display block 200 (without setting the frame output start time and output hold time), and the control unit measures the rotational speed. In accordance with the rotational speed of the rotating body 20 measured by the unit, the display block 200 sets the output start time and the output hold time of the frame to match the sync. That is, the present invention shown in FIG. The synchronization device according to the first embodiment is different from that of the synchronization device according to the second embodiment of the present invention shown in FIG. 6.

[53]

[54] The present invention is not limited to the above-described embodiments, and the scope of application is various

Of course, it is of course possible to implement various modifications without departing from the gist of the present invention claimed in the claims.

[55]

[56] [Explanation of code]

[57] 10 :Main body

[63] 100: image processing block 110: first memory frame block

[64] 200: Display block 210: Second memory frame block

Claims

2020/175861 1»（：1/10公020/002555 Claims

[Claim 1] Main body, rotating body coupled to the main body and rotating, and the above

In the device for synchronizing the position of the screen and the frame change point according to the rotational speed of a rotating display including a bar, which is formed on a rotating body and rotates and outputs an image frame,

A rotational speed measuring unit that measures the rotational speed of the rotating body; and

A control unit for changing the output time of the frame output from the single high school 1) bar according to the rotation speed of the rotation body measured by the rotation speed measurement unit;

A device for synchronizing the position of the screen with the frame change point according to the rotational speed of the rotating display, characterized by including.

[Claim 2] The method of claim 1,

The rotation speed measurement unit measures the unit rotation time it takes for the rotation body to rotate one rotation,

The control unit synchronizes the position of the screen with the frame change point according to the rotational speed of the rotary display, characterized by controlling the first high 1) bar so that the single high 1) bar outputs a single frame during the unit rotation time. Device.

[Claim 3] In paragraph 2,

The first high school 1) above is at least one bar,

The control unit is a device for synchronizing the frame change point according to the rotational speed of the rotary display and the position of the screen, characterized by controlling the 1st 1) bar so that the 1st high 1) bar starts outputting the frame at the same position.

[Claim 4] In paragraph 3,

If the rotational speed of the rotational body measured by the rotational speed measurement unit is lower than the reference value and the number of frames that can be expressed during the unit time in the first high school 1) bar is less than the number of frames of the image to be played back, the control unit The frame change point and screen position according to the rotational speed of a rotary display characterized by controlling the 1st 1) bar so that the frame that cannot be output from the bar is not played during the unit time of the frames of Synchronization device.

[Claim 5] In paragraph 3,

If the rotational speed of the rotational body measured by the rotational speed measurement unit is higher than the reference value and the number of frames that can be expressed during the unit time in the first high school 1) bar is greater than the number of frames of the image to be played back, the control unit Some of the frames at least twice in a row Rotational type characterized by controlling the above 1) bar to output

A device that synchronizes the position of the screen with the frame change point according to the rotational speed of the display.

[Claim 6] According to claim 4,

A frame change point and a position synchronization device of a screen according to the rotational speed of a rotational display, characterized in that the reference value of the rotational speed of the rotational body is obtained by the following equation.

_ Frame rate

Staff rpm ⁼ -::--X 6 ⁽ ¾

^F L五五» number of bars

[Claim 7] In paragraph 5,

A frame change point according to the rotational speed of a rotational display and a position synchronization device on the screen, characterized in that the reference value of the rotational speed of the rotational body is obtained by the following equation.

[Claim 8] In paragraph 3,

The rotary display includes an image processing block that receives an image to be played back and arranges and transmits the frames in sequence, and a display block that receives the frame data aligned from the image processing block and outputs it to the bar,

The control unit determines the time and position of the frame output from the first high 1) bar in one of the image processing block and the display block.

A device that synchronizes the position of the screen with the frame change point according to the rotational speed of a rotating display, characterized by controlling to change.