KR20130063403A - Position detecting system using infrared ray and method for driving thereof - Google Patents

Abstract

PURPOSE: A position detecting system using an infrared ray including data and an operating method thereof are provided to implement various contents in a display device by including data variously adjusting a screen of the display device in an infrared signal transmitted for calculating position coordinates. CONSTITUTION: A transmitting unit transmits screen adjustment data and position information of a user as an infrared signal. A receiving unit(200) includes receiving sensors(200a-200c) receiving the infrared signal. A control unit(300) detects data for screen adjustment and the position information from the signal to adjust a screen of the display device. A pulse signal generating unit periodically generates a pulse at every frame and a signal delay unit converts the pulse signal into sequential pulse signals. A selecting unit switches the sequential pulse signals to select a logic value and a signal transmitting unit generates and transmits an infrared signal including signals of a high or low level.

Description

Position detection system using infrared and its operation method {POSITION DETECTING SYSTEM USING INFRARED RAY AND METHOD FOR DRIVING THEREOF}

The present invention relates to a position detection system using infrared rays and a method of operating the same. More particularly, the present invention relates to an infrared signal sent for position (direction) determination, including data information for operating the system in various ways. The present invention relates to a position detection system using infrared rays and a method of operating the same.

Conventional televisions still use a user interface (UI) using a remote control, but the development of a smart phone (smart phone) such as the development of an integrated computer or television system such as smart television, There is a need for a new type of user interface that can be applied to such integrated systems.

Some new user interfaces that can be applied to such integrated systems have been proposed. For example, a user interface for detecting a command by detecting a voice, a user interface for detecting a command by detecting a gesture, and a motion recognition sensor. A user interface for recognizing a command using a built-in object has been proposed, and a method of downloading a smartphone application and using it as a remote controller has also been proposed.

Among these, a user interface that detects a user's gesture and recognizes a command enables the control of the integrated system using the most familiar and intuitive means of human movement, and has been spotlighted as a new user interface after the remote controller.

Such a user interface should be capable of recognizing the three-dimensional coordinates and changes in the three-dimensional coordinates of the interface means possessed by the user with the user interface in order to detect a gesture, and in a manner for recognizing the three-dimensional coordinates of the interface means. (charge coupled device) A camera using a single camera (SC), a time-of-flight camera (depth camera: DC), stereo vision (stereo vision) triangulation method A method of obtaining depth information (distance information between the measuring unit and the object) (stereo camera (STC)) has been proposed.

However, the CCD camera method is a method of calculating two-dimensional coordinates using only simple image information without depth information, which makes it difficult to accurately detect a gesture. The method of using a depth camera requires the use of an expensive depth camera such as a TOF camera. There is difficulty in commercialization.

In addition, the method using the stereo vision is vulnerable to environmental changes such as the change of external light, and it takes a long time to detect the depth information because it requires a large amount of calculation in the searching and comparing process for detecting the depth information. There is a problem falling.

As described above, due to a problem in the conventional method of recognizing three-dimensional coordinates of the interface means, recently, an interface means for recognizing two-dimensional coordinates using an infrared signal has been developed.

The interface means using the developed infrared signal basically includes a transmitter for outputting an infrared signal, a receiver for receiving the output infrared signal, and a controller for controlling the display apparatus using the infrared signal received from the receiver.

In particular, the transmitter includes a code identification waveform, a synchronous identification waveform, a carrier generator, and a plurality of infrared diodes, and the receiver includes a carrier signal removing unit, an envelope detector, a synchronous identification waveform detector, and a code to extract information from an input infrared signal. It consists of a value detector.

As such, the interface means using the infrared signal must generate a carrier signal to transmit the infrared signal for transmitting information, and transmit the infrared signal together with the carrier signal.

Therefore, since a separate carrier generator must be disposed in the transmitter of the interface means to generate a carrier signal, and a separate carrier signal remover must be disposed in the receiver to remove the carrier signal, the configuration is complicated and the signal processing process is complicated. have.

The present invention includes data information for variously adjusting the screen of the display device in the infrared signal transmitted to calculate the position (direction) coordinates, so that various contents can be implemented in the display device as well as the user's position detection. It is an object of the present invention to provide a position detection system using infrared rays and a method of operating the same.

In addition, the present invention, by using the carrier signal generator and the receiver used for the transmission and reception of the infrared signal, the high / low signal according to the intensity is included in the infrared signal transmitted for the position (direction) detection of the display device Another object of the present invention is to provide a position detection system using an infrared ray and a method of operating the same, which allow various screen adjustments.

A position detection system using infrared rays of the present invention for solving the above problems of the prior art, the display device; A transmitter for transmitting data information for adjusting a screen of the display device and user location information as an infrared signal; A receiver comprising a plurality of receiver sensors for receiving an infrared signal of the transmitter; And a control unit for detecting the position information of the user and data information for screen adjustment from the received infrared signal of the receiver, and adjusting the screen of the display apparatus using the same. A pulse signal generator for generating a pulse signal periodically every frame, a signal delay unit for sequentially converting the pulse signals generated from the pulse signal generator into N delayed sequential pulse signals; A selection unit for switching the delayed sequential pulse signals supplied from the signal delay unit to select a preset logic value to correspond to the data information for adjusting the screen; and a plurality of high corresponding to the logic value at the same time as the switching operation of the selection unit; Or a signal for generating and transmitting an infrared signal including a low level signal It includes a delivery unit.

In addition, the operating method of the position detection system using the infrared ray of the present invention, generating a pulse signal periodically every frame unit, and converting the pulse signal into N delayed sequential pulse signal sequentially (N is a natural number) ; Selecting a sequential pulse signal corresponding to a user's command input and transmitting a high or low level infrared signal corresponding thereto; Receiving the transmitted infrared signal and detecting location information of the user and data information corresponding to a command input from the received infrared signal; And adjusting the screen of the display device by using the detected data information.

The position detection system using infrared rays of the present invention and a method of operating the same are included in the infrared signal transmitted to calculate position (direction) coordinates together with data information for variously adjusting the screen of the display device to detect the position of the user. In addition, there is an effect that can implement a variety of content on the display device.

In addition, the position detection system using the infrared ray of the present invention and its operation method, the strength of the infrared signal transmitted for position (direction) detection for the position (direction) without using the carrier signal generator and the receiver used for the transmission and reception of the infrared signal Including the high / low signal according to the effect can be variously adjusted the screen of the display device.

1 is a perspective view showing a position detection system using infrared rays according to the present invention.
2 is a block diagram of a position detection system using infrared rays according to the present invention.
3 is a view for explaining the operation of the position detection system using infrared rays according to the present invention.
4 is an infrared signal waveform transmitted from a transmitter of a position detection system using infrared rays of the present invention.
5 is a diagram illustrating a circuit structure of a receiver of a position detection system using infrared rays of the present invention.
FIG. 6 is a view for explaining a process of generating an infrared signal including data information in a transmitter of a position detection system using infrared light of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a perspective view showing a position detection system using infrared rays according to the present invention.

As shown in FIG. 1, the position detection system 500 using infrared rays of the present invention includes a display device 120 displaying an image and a transmitter 100 to which a command for controlling the display device 120 is input. And a controller configured to control the display apparatus 120 based on the receiver 200 disposed on the display apparatus 120 to receive the infrared signal transmitted from the transmitter 100, and the received information signal of the receiver 200. 300.

The receiver 200 includes first, second, and third receiver sensors 200a, 200b, and 200c disposed along an edge of the display device 120 to receive an infrared signal transmitted from the transmitter 100. .

The display device 120 may include an electroluminescence device (EL) such as a liquid crystal display (LCD), an organic light emitting diode display device (OLED), and an field emission display device ( A display panel of a flat panel display device such as a field emission display (FED), a plasma display panel (PDP), or the like is implemented. The liquid crystal display includes a transmissive liquid crystal display, a transflective liquid crystal display, a reflective liquid crystal display, and the like. In the transmissive liquid crystal display device and the transflective liquid crystal display device, a backlight unit for irradiating light to the display panel is required. The backlight unit may be implemented as an edge type backlight unit or a direct type backlight unit.

The transmitter 100 and the receiver 200 are spaced apart from each other as an interface means, and receive and transmit an infrared ray (IR ray) type signal by receiving a user's command (button selection in the case of a remote control). To pass.

In particular, as shown in the present invention, the position detecting system 500 using infrared rays receives an infrared signal transmitted according to a user's gesture or a changed position at the receiver 200, and then selects an arbitrary point according to the strength of the received infrared signal. The three-dimensional coordinates and the change in the three-dimensional coordinates of can be calculated.

In the present invention, selection means included in the transmitting unit 100 of the position detection system 500 using infrared rays, for example, a screen change (size, angle, etc.), a mouse function, a selection function of the display device 120 for each button of a remote controller. In addition, data information such as a screen capture function can be set and included in the infrared signal, so that various content functions can be implemented on the buttons of the remote controller as well as the user's position (direction) detection.

In the position detection process of the position detection system 500 using infrared rays of the present invention, the reference distance between the receiver 200 and the transmitter 100 is set, and the intensity of the infrared signal with respect to the reference distance is previously controlled by the controller 300. It is set to).

For example, a seat using the transmitter 100 from the center front of the display device 120 may be set as the reference distance.

Subsequently, when the user points to the left and right or up and down sides of the screen of the display device 120 using the transmitter 100 (which may be a remote controller), the receiver 200 is disposed along an edge of the display device 120. Infrared intensity and directivity received by the first to third receiving sensors 200a, 200b, and 200c have different values.

For example, when the user points the transmitter 100 to the upper left of the display device 120, the infrared intensity received by the first receiving sensor 200a is the largest, and the second and third are disposed at different positions. The reception sensors 200b and 200c exhibit relatively small intensities. That is, as described above, the position and the direction may be calculated whether the user indicates the direction of X1, X2, or X3 based on the infrared intensity and the direction of the preset reference distance according to the direction indicated by the transmitter 100.

In particular, the position detection system using the infrared light of the present invention can calculate the position of the user only by the infrared signal transmitted from the transmitter 100, and also according to the level (signal strength) of the transmitted infrared signal display device 120 Data information about various functions that can control the screen displayed in the also has the advantage that can be sent together.

Transmission and reception of data information that can implement various contents in the infrared signal will be described in detail below.

2 is a block diagram constituting a position detection system using infrared rays according to the present invention, Figure 3 is a view for explaining the operation of the position detection system using infrared rays according to the present invention, Figure 5 is an infrared ray of the present invention Is a diagram illustrating a circuit structure of a receiving unit of a position detection system using the present invention.

2 and 3, the position detection system using the infrared light of the present invention includes a transmitter 100, a receiver 200, and a controller 300, and the transmitter 100 includes a pulse signal generator 10. And a signal delay unit 20, a selector 30, and a signal transmitter 40 for transmitting an infrared signal.

In addition, the receiving unit 200 includes a sensor unit 50 including the first to third receiving sensors 200a, 200b, and 200c of FIG. 1, and a signal amplifier 600, and the control unit 300. ) Includes a calculator 70 for calculating data information from the infrared signal received by the receiver 200 and a converter 80 for converting an analog infrared signal into a digital signal.

The circuit diagram of the receiver 200 is illustrated in FIG. 5, wherein the sensor unit 50 may be formed of a photodiode that receives an infrared signal and changes it into a current signal Iin. 60 may be configured as an OP amplifier that amplifies the current signal Iin changed by the photodiode into a voltage signal.

 The pulse signal generator 10 of the transmitter 100 generates a pulse signal periodically every frame, as shown in A of FIG. 3. The pulse signal may be generated by an on / off operation of a switch.

As described above, when a pulse signal is generated in the pulse signal generator 10, the signal delay unit 20 of the transmitter 100 sequentially generates sequential pulse signals delayed by D1, D2, and D3. In FIG. 3B, the pulse signal is changed into three delayed sequential pulse signals. However, since the pulse signal is not fixed, three or more sequentially delayed sequential pulse signals may be generated in some cases. For example, it can be changed to N delayed sequential pulse signals, and as shown in FIG. 6, 2 ^N -2 data information can be generated from the ^N delayed sequential pulse signals.

The data information thus generated is transmitted as a logic value of a high / low level represented by the strength of the infrared signal.

When the sequential pulse signal sequentially delayed from the signal delay unit 20 is input to the selector 30 as described above, specific sequential pulse signals are sequentially transmitted from the logic unit K by the user's selection. Is passed to. At this time, the switching unit S1 of the signal transmitting unit 40 also operates in response to the user's selection.

The selector 30 may be a remote controller, and the user's selection may be buttons of the remote controller. That is, when the user selects a button of the remote controller, data information on the corresponding button is preset as logic values, and sequential pulse signals corresponding thereto are made by the operation of the selector 30.

For example, the data information value corresponding to various contents for changing the screen displayed on the display device 120 is set as a logic value in a high / low form of an infrared signal, and the data information value corresponding to each content is Match the respective buttons formed on the remote control.

Therefore, according to the user's physical key (key) input, the electrical switches (ES1, ES2, ES3) is on / off operation, according to the on / off operation, the logic unit (K) sends the selected sequential pulse signals The infrared signal is supplied to the gate terminal of the transistor T of the unit 40, and is transmitted from the photodiode P according to the operation of the power supply voltage Vcc and the switching unit S1 according to the on / off operation of the transistor. Determine the level.

That is, the signal transmitter 40 selects the level of the infrared signal set according to the user's button selection. When the signal transmitter 40 transmits a high level infrared signal according to the operation of the switching unit S1, The power supply voltage is supplied to the resistor R1, and when the low level infrared signal is transmitted, the power supply voltage is supplied to the second resistor R2.

For example, 100 mA flows to the first resistor R1 to send a high level infrared signal, and 50 mA flows to the second resistor R2 to send a low level infrared signal. Flow to set the photodiode P to operate.

This is to set the data information values corresponding to various contents to logic values (high / low / high, etc.), respectively, and generate the strength of the infrared signal to be strong and weak so as to correspond to the set logic values.

As described above, while the user selects the buttons of the remote controller, the infrared transmission signal output through the signal transmitter 40 of the transmitter 100 is shown in Fig. 4. Therefore, in the position detection system using the infrared rays of the present invention, A method of generating an infrared signal including data information will be described in detail with reference to FIGS. 4 and 6.

4 is an infrared signal waveform transmitted from a transmitter of a position detection system using infrared rays of the present invention, and FIG. 6 illustrates a process of generating an infrared signal including data information from a transmitter of the position detection system using infrared rays of the present invention. It is a figure for following.

Referring to FIGS. 4 and 6 together with FIG. 3, the first to sixth buttons of the buttons of the remote controller corresponding to the selector 30 of the transmitter are configured to capture a screen being displayed on the display device. Data information on the function, the mouse function, the selection function and the screen changing functions (content functions) are set.

That is, when button 1 is selected, a mouse cursor is created on the display screen, or when button 3 is selected, data information for various functions such as selecting a location designated by the cursor is set, and the data information is detected. In order to change the level of the infrared signal sent out to include.

Therefore, when the button 2 is selected, the electric switches ES1, ES2, and ES3 of the selection unit 30 are switched, so that the switching unit S1 of the signal transmitting unit 40 sequentially selects R1, R2, and R1, respectively. By switching, the photodiode P emits an infrared signal in the form of high (H), low (L), and high (H).

In the present invention, the high level and the low level are not the "1" and "0" levels, which are generally used in logic circuits, but refer to the difference in intensity of the infrared output. That is, when the intensity of the infrared rays transmitted in one frame period is relatively strong, it has a high level, and when it is relatively weak, it has a low level.

As shown in FIG. 6, when an infrared signal corresponding to the first to sixth buttons of the remote controller is transmitted, the receiving unit receives it, and then the control unit calculates the difference in the intensity of the infrared signal and then displays it on the display device. Control to perform a function corresponding to the corresponding data information on the screen.

That is, when the infrared signal is received, the controller can detect logic signals (high / low / high) included in the infrared signal while calculating position (direction) information as described with reference to FIG. 1 through the received infrared signal. have. Therefore, the present invention can transmit and receive data information that can change the screen displayed on the display device from the infrared signal used for the position detection as well as the position detection, it is possible to implement a variety of system operations without additional devices.

The present invention includes data information for variously adjusting the screen of the display device in the infrared signal transmitted to calculate the position (direction) coordinates, so that various contents can be implemented in the display device as well as the user's position detection. It is an object of the present invention to provide a position detection system using infrared rays and a method of operating the same.

In addition, the present invention, by using the carrier signal generator and the receiver used for the transmission and reception of the infrared signal, the high / low signal according to the intensity is included in the infrared signal transmitted for the position (direction) detection of the display device Another object of the present invention is to provide a position detection system using an infrared ray and a method of operating the same, which allow various screen adjustments.

100: transmitter 200: receiver
120: display device 300: control unit
10: pulse signal generator 20: signal delay unit
30: selector 40: signal transmitter
50: sensor unit 60: signal amplifier
70: calculator 80: converter

Claims (8)

Display device;
A transmitter for transmitting data information for adjusting a screen of the display device and user location information as an infrared signal;
A receiver comprising a plurality of receiver sensors for receiving an infrared signal of the transmitter; And
In the position detection system using infrared rays including a control unit for detecting the position information of the user and data information for screen adjustment from the received infrared signal of the receiver, and adjusts the screen of the display device using the same,
The transmitter may include a pulse signal generator for generating a pulse signal periodically every frame;
A signal delay unit for sequentially converting the pulse signals generated from the pulse signal generator into N delayed sequential pulse signals (N is a natural number);
A selection unit for switching the delayed sequential pulse signals supplied from the signal delay unit to select a preset logic value to correspond to the data information for adjusting the screen;
And a signal transmitter configured to generate and transmit an infrared signal including a plurality of high or low level signals corresponding to a logic value simultaneously with the switching operation of the selector.
The method of claim 1, wherein the receiving unit,
A sensor unit including reception sensors for receiving an infrared signal transmitted from the transmitter;
And a signal amplifier for amplifying the received infrared signal supplied from the sensor unit.
3. The apparatus of claim 2,
An arithmetic unit configured to receive the amplified received infrared signal from the receiver and detect position information of the transmitter and data information for screen adjustment;
And a converting unit converting the data information signal detected by the calculating unit into a digital signal to control a screen of the display device.
The remote controller of claim 1, wherein the selector includes a remote controller having respective buttons, wherein the preset logic values correspond to content functions for screen adjustment, respectively, and to each of the buttons of the remote controller. Position detection system using infrared, characterized in that the logic values of the set.
The switching unit of claim 1, wherein the signal transmitting unit selects a high or low level of an infrared signal corresponding to a preset logic value simultaneously with the switching operation of the selecting unit;
And a photodiode for generating an infrared signal having a high or low level according to a switching operation of the switching unit.
Generating a pulse signal periodically every frame, and converting the pulse signal into N delayed sequential pulse signals sequentially;
Selecting a sequential pulse signal corresponding to a user's command input and transmitting a high or low level infrared signal corresponding thereto;
Receiving the transmitted infrared signal and detecting location information of the user and data information corresponding to a command input from the received infrared signal; And
And adjusting the screen of the display device by using the detected data information.
The method of claim 6, wherein the transmitting of the high or low level infrared signal comprises controlling a current corresponding to the selected sequential pulse signal to operate a photodiode generating an infrared signal at a high or low current level. A method of operating a position detection system using infrared rays, characterized by generating another infrared signal.
The method of claim 6, wherein detecting the location information of the user comprises:
Position using infrared rays, characterized in that the detection and comparison of the intensity and direction of the infrared signal received by the receiving sensors arranged on the display device based on the intensity and direction of the infrared signal corresponding to the preset fixed position of the user Method of operation of the detection system.

Images