KR102101784B1 - Implemented System for function of pen touch of rear projection type display device using digital pen and film printed pattern - Google Patents

Abstract

The present invention relates to a system for implementing a pen touch function of a rear projection display device using a digital pen and pattern printing film, a rear projection display device such as a monitor or TV screen that does not support a touch function, or a glass screen that scans a projector from the rear. The feature is that a general display device can be used as a touch-type display device through a simple structure, by attaching a film printed with a pattern recognized by a digital pen to implement the pen touch function.

Description

{Implemented System for function of pen touch of rear projection type display device using digital pen and film printed pattern}

The present invention relates to a system for implementing a pen touch function of a rear projection display device using a digital pen and a pattern printing film, and more specifically, a monitor or TV screen that does not support a touch function, a glass screen for scanning a projector from the back, and the like. By attaching a film printed with a pattern recognizable by a digital pen to the rear projection type display device to implement the pen touch function, a digital pen and pattern printing film that can be used as a general type of display device as a touch type display device are constructed through a simple structure. It relates to a system for implementing a pen touch function of a used rear projection display device.

In general, a digital pen recognizes the trajectory wherever a dot pattern is formed and allows writing. As a digital pen is connected to devices such as electronic notes, notebooks, smart phones, smart TVs, and electronic blackboards, the handwritten content is transmitted in real time. As it is displayed on the screen, it can be checked immediately, and the created and edited contents are stored in the internal memory or configured to be shared with other users or devices through mail, SNS, and the cloud.

Recently, electronic blackboards capable of displaying learning contents, lecture materials, documents, etc. on a screen, and writing or drawing on the screen according to a user's selection are widely used. Sheet and smart electronic blackboard 'is disclosed in Patent No. 10-1766447 (hereinafter referred to as' patent document 1').

The patent document 1 is a frame frame consisting of a plurality of unit frames are connected; An image device installed on an inner rear side of the frame and having a flat panel or curved display panel on which an image is output; It is coupled to the inside of the frame frame to be arranged to cover the front of the imaging device, and is changed to a transparent state or an opaque state according to power supply and cut-off, respectively, and consists of a polymer dispersed liquid crystal (PDLC) to transmit light or A variable panel portion including a scattering PDLC layer, an ITO layer formed on the front and rear surfaces of the PDLC layer and coated with indium-tin oxide, and a substrate layer formed on the outer surface of each ITO layer; A PMMA sheet having a plate writing surface coupled to a substrate layer formed in front of the variable panel portion and made of writing; A light guide plate which is attached to the rear surface of the variable panel portion, is made of a transparent material, and has an LED light source having a dimming function, and diffuses light emitted from the LED light source when power is applied to increase the clarity of the written letters; A reflective film that is attached to the rear surface of the light guide plate and that aluminum is deposited to reflect a portion of the light so that the screen of the power-off imaging device is not easily visible; Control means having a power supply for supplying power and adjusting the brightness of the LED light source; And a multi-layer optical sheet having a dot pattern attached to the front surface of the PMMA sheet and capable of tracking an electronic pen handwriting trajectory so that the handwriting is recognized and displayed on the screen.

Patent document 1 made of the above configuration is made of a polymer dispersed liquid crystal (PDLC) PDLC layer that transmits or scatters light, formed on the front and rear surfaces of the PDLC layer, respectively, and ITO coated with indium-tin oxide There is a problem in that the structure of the electronic blackboard such as the variable panel portion including the layer and the substrate layer formed on the outer surface of each ITO layer, the PMMA sheet, the light guide plate, and the reflective film is very complicated, leading to an increase in unit cost.

Patent Document 1: Republic of Korea Patent Registration No. 10-1766447

The present invention has been devised to solve the above-mentioned problems, and an object of the present invention is to recognize a pattern that can be recognized as a digital pen on a rear projection display device such as a monitor or TV screen that does not support a touch function or a glass screen that scans a projector from the rear. By attaching this printed film to implement the pen touch function, the pen touch function of the rear projection display device using a digital pen and pattern printing film that can be used as a touch display device through a simple structure is realized through a simple structure. It is to provide a system.

In order to solve the above problems, a system for implementing a pen touch function of a rear projection type display device using a digital pen and a pattern printing film according to a preferred embodiment of the present invention is arranged by a certain rule to extract coordinate values. A pattern printing film configured to be detachably attached to a front surface of a display device on which an image is displayed, such as a monitor or TV screen, on which a specific pattern consisting of a set of is printed; A digital pen that recognizes a specific pattern printed on the pattern printing film and receives a user command signal; And a controller that provides image data to the display device and analyzes and processes the pattern printed on the pattern printing film provided from the digital pen.

It is characterized in that it is configured to implement a pen touch function by using the digital pen on an image displayed through a pattern printing film attached to the front side of the display device.

In addition, the digital pen fails to extract coordinates from five or more images continuously in the process of extracting x and y coordinates by receiving images in each mode so that it can be used in both the front projection mode or the rear projection mode. And when the specific gravity of black and white in the image conversion process, that is, 1 and 0 appear opposite to the current mode, it is characterized in that it is configured to automatically switch the mode.

In addition, when the digital pen receives an image by pen down and fails to extract coordinates while the pen down continues for more than 1 second, mode switching is automatically performed, and pattern printing is continuously performed twice in each mode. Characterized in that it is configured to automatically switch the mode when the film is touched.

In addition, the pattern printing film, the air layer to form an air film spaced apart from the screen of the display device; A screen protection layer positioned in front of the air layer and including a filter function to block ultraviolet and blue light, and performing a screen protection function of the display device; A pattern layer positioned in front of the screen protection layer and on which a pattern recognizable through the digital pen is printed; And a coating layer positioned in front of the pattern layer to form a coating layer for protecting and anti-reflective treatment of the pattern printed on the pattern layer.

In addition, the air layer is made of a structure that forms a fine air film of less than 0.01mm to 1mm, or the front of the display device in a state in which light-transmitting transparent ink is irregularly coated with small dots of 1200DPI or more on the back of the screen protection layer. Characterized in that it is configured to form a fine air film of less than 0.01mm ~ 1mm when attached to.

As described above, according to the present invention, a pen touch is attached by attaching a film printed with a pattern recognizable as a digital pen to a rear projection display device such as a monitor or TV screen that does not support a touch function or a glass screen that scans a projector from the rear. By configuring to implement the function, there is an advantage that a general display device can be used as a touch type display device through a simple structure.

1 is a block diagram of a system for implementing a pen touch function of a rear projection display device using a digital pen and a pattern printing film according to a preferred embodiment of the present invention.
2 is an explanatory view showing the structure of a pattern printing film of a pen touch function implementation system of a rear projection display device using a digital pen and a pattern printing film according to a preferred embodiment of the present invention.
3 and 4 is an explanatory view showing a state in which the pattern printing film is attached to the rear projection display device of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings. The same reference numerals in each drawing denote the same members.

1 is a block diagram of a system for implementing a pen touch function of a rear projection type display device using a digital pen and pattern printing film according to a preferred embodiment of the present invention, and FIG. 2 is a digital pen and pattern printing according to a preferred embodiment of the present invention It is an explanatory diagram showing the structure of a pattern printing film of a system for implementing a pen touch function of a rear projection display device using a film, and FIGS. 3 and 4 are explanatory diagrams showing a state where a pattern printing film is attached to the rear projection display device of the present invention. .

1 to 4, a pen touch function implementation system of a rear projection type display device using a digital pen and a pattern printing film according to a preferred embodiment of the present invention includes a pattern printing film 100, a digital pen 200, and a controller 300.

The pattern printing film 100 is a specific pattern consisting of a set of points arranged by a certain rule so that coordinate values can be extracted. As a specific pattern printed on the pattern printing film 100, binary data is encoded. Binary data is encoded and displayed in a manner different from the displayed first cell and the first cell, or may be configured to include a second cell and a first cell and a second cell that do not have data, and a unit cell pattern formed by a predetermined number or more. have. In each first cell, x, y, which is binary data information for giving X and Y coordinate values of a unit cell pattern, are (0,0), (0,1), (1,0) or (1, 1) and so on.

In addition, the pattern printing film 100 of the present invention is coded and displayed in each of the first and second cells, as well as binary data, as well as binary data (x = 0 or 1, y = 0) depending on the number of branches. Or 1) or more hexadecimal data (x = 0 or 1 or 2, y = 0 or 1 or 2), hexadecimal data (x = 0 or 1 or 2 or 3) , y = 0 or 1 or 2 or 3).

The configuration for forming the specific pattern P on the pattern printing film 100 to display the absolute position is a known technique in the art to which the present invention pertains, and thus detailed description will be omitted.

On the other hand, in the present invention, the pattern printing film 100 is configured to be detachably attached to the front of the display device 10 on which an image is displayed, such as a monitor or TV screen. Referring to FIGS. 3 and 4, The pattern printing film 100 of the present invention is configured to be fixed to the front of the display device 10 by the fixing member 20, the fixing member 20, as shown in Figure 3, the pattern printing film It is attached to the end of the (100) to take out the pattern printing film (100) from the tube on the left and adhere to the screen, and at the right end, in the form of a clip or tongs that attaches the pattern printing film (100) to the front of the display device (10). As shown in Figure 4, as shown in Figure 4, attaching fixtures such as rails of rails to both ends of the pattern printing film 100, combined with rail fixtures in the same concept as the chords, from both sides. Turn it to the screen print film 100 may be of a jjoldae, clip or clamp type wherein the maximum extent possible attachment.

On the other hand, in the present invention, the pattern printing film 100, as shown in Figure 2, the air layer 110 to form an air film in a state spaced apart from the screen of the display device 10, and the air layer Located at the front of the (110) includes a filter function to block ultraviolet and blue light and performs a screen protection function of the display device 10, the screen protection layer 120, and the front of the screen protection layer 120 Located on the front of the pattern layer 130 and the pattern layer 130 on which a pattern recognizable through the digital pen 200 is printed, protection and anti-reflection processing of the pattern printed on the pattern layer 130 is provided. Characterized in that it consists of a coating layer 140 to form a coating film for, as in the present invention, when attaching the pattern printing film 100 with a pattern formed on the front surface of the display device 10, the display device 10 RGB As the patterns arranged on a regular interval and the patterns printed on the pattern layer 130 overlap, a moire phenomenon appears, and thus, a microscopic tingling phenomenon occurs in the user's eyes, which easily causes eye fatigue. do.

The present invention is characterized in that the air layer 110 is provided in order to minimize the Moire phenomenon and improve sharpness, wherein the air layer 110 is provided with a screen and pattern printing film ( 100) may be made of a structure that forms a fine air film of less than 0.01mm ~ 1mm between, and the display device in a state in which light-transmitting transparent ink is irregularly applied with small dots of 1200DPI or more on the rear surface of the screen protection layer 120 It is also possible to be composed of a fine air film of less than 0.01mm ~ 1mm generated in the process of attaching to the front of (10).

The digital pen 200 recognizes a specific pattern to be printed on the pattern printing film 100 and receives a user command signal, which is an optical system / lens for optically inputting at least one unit cell pattern, of absolute coordinates. A change amount calculation sensor for measuring the amount of change in coordinate values, an absolute coordinate calculation sensor for recognizing an image of an input unit cell pattern to calculate absolute coordinates, a change amount calculation sensor and a microcontroller processing information input from the absolute coordinate calculation sensor, It may be configured as an internal memory for storing schedule information under the control of the micro-controller and a universal (USB) interface for communicating with the controller 300 under the control of the micro-controller.

The digital pen 200 is configured to recognize the absolute position display pattern of the pattern printing film 100 and extract the absolute coordinates of the unit cell pattern, an image of a binary data code included in each cell constituting the unit cell pattern After recognizing, the binary data of the unit cell pattern is calculated using the binary data sign of each cell, and the absolute coordinates including the X and Y coordinates of the unit cell pattern are calculated through the calculated binary data. Calculate, and when the digital pen 200 moves by the user, calculate the relative coordinates using the amount of change in the absolute coordinates, convert the coordinate values of the absolute coordinates and the relative coordinates to the standard digitizer data format, and then convert The digitizer coordinate value, which is the coordinate value, is transmitted to the controller 300.

Here, the digital pen 200 of the present invention is described as being configured to include both a variation amount calculation sensor and an absolute coordinate calculation sensor, but is not limited thereto, and includes only an absolute coordinate calculation sensor or a variation amount calculation sensor and an absolute coordinate. It is possible to have all the calculation sensors.

Other configurations and functions of the digital pen 300 are well-known in the art to which the present invention pertains, and thus detailed description will be omitted.

On the other hand, the digital pen 200 is configured to be used in both the front projection mode or the rear projection mode, and is characterized in that it can be used continuously in the process of extracting x and y coordinates by receiving images in each mode. If the extraction of coordinates from more than one image fails and the specific gravity of black and white, i.e., 1 and 0, appears opposite to the current mode in the image conversion process, it is configured to automatically switch the mode.

In addition, the digital pen 200 may be configured to automatically switch the mode when the pen-down fails to extract the coordinates after the pen-down continues for more than 1 second after receiving the image by the pen-down. It is also possible to configure to automatically switch the mode when the pattern printing film 100 is touched twice in the mode.

On the other hand, when the digital pen 200 reads the pattern printed on the pattern printing film 100 and succeeds, the mode of the digital pen 200 is in front projection mode to the user by a continuous alarm or the like by LED flashing or short vibration to the user. Or it is preferably configured to notify that it has been changed to any one of the rear projection modes.

The digital pen 200 is basically set to be usable in the front projection mode, and touches a specific area of the pattern printing film 100, that is, an area or corner area where a value of 0 is recognized by the digital pen 200. If a preset value is to be recognized, it is configured to switch to the rear projection mode rather than the front projection mode when it is not recognized using these characteristics.

That is, the digital pen 200 of the present invention is configured to recognize the front projection mode and the rear projection mode in various ways during the initial use of the digital pen 200, and automatically switch to a state suitable for each mode. It is not only necessary to have a digital pen that can be used for the projection mode and the rear projection mode, but also to provide user convenience.

The controller 300 analyzes and processes the pattern printed on the pattern printing film 100 provided from the digital pen 200, and provides image data to the display device 10, the pattern printing film 100 Recognizes the absolute position display pattern printed on), calculates coordinate values of one or more of absolute and relative coordinates through the binary data of the unit cell pattern of the absolute position display pattern, and calculates the calculated coordinate values in the standard digitizer data format. Provides conversion means to convert digitizer coordinate values to fit and convert digitizer coordinate values to fit the aspect ratio value, and then provides application means / devices to generate and output the results through the digitizer application. It is possible to provide a function of a digitizer using only the printing film 100 and the digital pen 200.

To this end, the present invention is based on a technique for producing a pattern printing film 100 for generating and printing a specific pattern representing coordinates, and a digital pen 200 technique for extracting coordinates by recognizing this specific pattern, and recognized coordinate values It provides a technique for converting to a form of standard digitizer data and transmitting it to the controller 300.

As described above, the present invention has a pattern that can be recognized by the digital pen 200 on a rear projection display device 10 such as a monitor or TV screen that does not support a touch function or a glass screen that scans a projector from the rear. By attaching the printed pattern printing film 100 to implement the pen touch function, it is possible to use a general display device as a touch type display device through a simple structure.

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms are used herein, they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments are possible. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: display device 20: fixing member
100: pattern printing film 110: air layer
120: screen protection layer 130: pattern layer
140: coating layer 200: digital pen
300: controller

Claims (5)

A pattern printing film configured to be detachably attached to the front surface of a display device displaying an image such as a monitor or TV screen; a specific pattern consisting of a set of dots arranged according to a certain rule is printed to extract coordinate values;
A digital pen that recognizes a specific pattern printed on the pattern printing film and receives a user command signal; And
A controller that provides image data to the display device and analyzes and processes a pattern printed on the pattern printing film provided from the digital pen.
It is configured to implement a pen touch function using the digital pen on the image displayed through the pattern printing film attached to the front of the display device,
The digital pen fails to extract coordinates from five or more images continuously in the process of extracting x and y coordinates by accepting images in each mode so that it can be used in both the front projection mode or the rear projection mode. When the specific gravity of black and white, i.e. 1 and 0, appears opposite to the current mode in the conversion process, the mode is automatically switched.
When the digital pen receives an image by pen-down and fails to extract coordinates while the pen-down continues for more than 1 second, mode switching is automatically performed, and pattern printing film is continuously applied twice in each mode. It is configured to automatically switch modes when touched.
The pattern printing film may include an air layer forming an air film spaced apart from the screen of the display device; A screen protection layer positioned in front of the air layer and including a filter function to block ultraviolet and blue light, and performing a screen protection function of the display device; A pattern layer positioned in front of the screen protection layer and on which a pattern recognizable through the digital pen is printed; It includes; and a coating layer positioned on the front of the pattern layer to form a coating film for the protection and anti-reflection treatment of the pattern printed on the pattern layer;
The air layer is made of a structure that forms a fine air film of less than 0.01mm to 1mm, or is attached to the front of the display device with light-transmitting transparent ink irregularly coated with small dots of 1200DPI or more on the back of the screen protection layer. A system for implementing a pen touch function of a rear projection display device using a digital pen and a pattern printing film, characterized in that a fine air film of less than 0.01mm to 1mm is formed. delete delete delete delete

Images