KR101987837B1 - Method for providing eyesight shielding service based on multi-media device - Google Patents

Abstract

There is provided a method of providing a vision protection service based on a multimedia terminal, comprising the steps of: photographing a face to identify a shooting object, storing at least one identifier included in the shooting object separately, and comparing the identified at least one identifier with a predetermined parameter Comparing the calculated distances with pre-stored distances for each step; if the calculated distance is a distance of the first stage, reducing the illuminance of the multimedia terminal, And gradually increasing the illuminance at a distance equal to or greater than the second step, and when the calculated distance is less than the second step, the screen of the multimedia terminal is stopped until the calculated distance reaches the distance of the first step .

Description

[0001] METHOD FOR PROVIDING EYESIGHT SHIELDING SERVICE BASED ON MULTI-MEDIA DEVICE [0002]

The present invention relates to a method of providing a multimedia terminal-based vision protection service, and provides a method for providing reliable information when recommending an affiliate shop by analyzing objective data corresponding to sales of the affiliate shop.

In modern society, many people are in serious media addiction enough to get the word "media hunger". Especially, the media addiction started from the early childhood period when the sight to have a lifetime to begin to form is increasing, and the wearing rate of the glasses by young children is increasing more and more. This is a result of overexposure of various electronic devices such as smart phones, computers and TVs.

At this time, a method for protecting eyesight is performed by maintaining the distance using face information. In this regard, Korean Patent No. 10-1550493 (issued on Sep. 04, 2015) and Korean Patent No. 10-1580918 (issued on December 30, 2015), which are prior art, The face-to-face information for the specific person is set as the reference face information, and the request for setting the eyesight protection mode is received together with the identification information for the specific person. When the eyesight protection mode is set for the specific person, A configuration having a vision protection function for grasping the face information of the face in the captured image, comparing the face information with the reference face information of the specific person, and adjusting the brightness of the screen to be dark when the face information is larger than the reference face information of the specific person / RTI >

However, when the brightness of the screen is adjusted to be dark, the difference from the surrounding illuminance becomes rather large, which may cause deterioration rather than visual protection. In other words, the visual acuity becomes lower when the illuminance is low because the pupil size increases in the dark illuminance, and the larger the pupil size, the smaller the control power. In addition, since a viewer with control authority can increase the brightness of a screen, a meaningless function for maintaining a distance between a viewer and a screen consumes computing resources, resulting in waste.

According to an embodiment of the present invention, when the distance between the screen and the user is a first distance, the screen brightness and sound are reduced, and when the distance is longer than the first distance, the sound is returned. When the second distance is shorter than the first distance, A warning notification is output in a manner other than brightness, and when a warning of a predetermined number of times or more is output, a notification is given to the guardian so as to hand over the control authority, thereby providing an intuitive interface Thereby providing a configuration that enables quick adaptation and protection of the eyesight, thereby providing a multimedia terminal-based vision protection service providing method. It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided a method for identifying a shooting object, the method comprising: identifying a shooting object by photographing a face; sorting and storing at least one identifier included in the shooting object; Comparing the calculated distances with previously stored distances, comparing the distance between the multimedia terminal and the shooting object, comparing the calculated distances with previously stored distances, Increasing the illuminance gradually at a distance equal to or greater than the first step and the second step, and when the calculated distance is less than the second step, To reach a distance of < / RTI >

According to any one of the above-mentioned means, when the distance between the screen and the user reaches the first distance, the screen brightness and sound are reduced, and when the distance is maintained over the first distance, When the second distance is reached, a warning notification is output in a manner other than sound and brightness, and when a warning of a predetermined number of times or more is output, a control authority is handed over by informing the guardian so that the user can maintain a proper distance By providing a configuration through an intuitive interface, it is possible to provide a configuration that allows for quick adaptation and vision protection, and proper resting and viewing at a reasonable distance can reduce the impact on distance vision and tear stability.

FIG. 1 is a block diagram illustrating a multimedia terminal-based vision protection service providing system according to an exemplary embodiment of the present invention. Referring to FIG.
FIG. 2 is a block diagram illustrating a multimedia terminal shown in FIG. 1. Referring to FIG.
3 is a view for explaining an embodiment in which vision protection service is implemented according to an embodiment of the present invention.
4 is a view for explaining an embodiment in which the vision protection service is implemented by a method of adjusting a screen according to distance according to an embodiment of the present invention.
5 is a diagram illustrating a process in which data is transmitted and received between the respective components included in the multimedia-terminal-based vision protection service providing system of FIG. 1 according to an exemplary embodiment of the present invention.
6 is a flowchart illustrating a method of providing a multimedia terminal-based vision protection service according to an exemplary embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

The terms "about "," substantially ", etc. used to the extent that they are used throughout the specification are used in their numerical value or in close proximity to their numerical values when the manufacturing and material tolerances inherent in the stated meanings are presented, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure. The word " step (or step) "or" step "does not mean" step for. &Quot;

In this specification, the term " part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware.

In this specification, some of the operations or functions described as being performed by a terminal, a device, or a device may be performed instead in a server connected to the terminal, device, or device. Likewise, some of the operations or functions described as being performed by the server may also be performed in a terminal, device or device connected to the server.

In this specification, some of the operations or functions described in the mapping or matching with the terminal are used for mapping or matching the unique number of the terminal or the identification information of the individual, which is the identification data of the terminal . ≪ / RTI >

In this specification, at least one meaning may be interpreted as singular or plural, and when using at least one term, it may be deleted in duplicate below, Can be interpreted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram illustrating a multimedia terminal-based vision protection service providing system according to an exemplary embodiment of the present invention. Referring to FIG. Referring to FIG. 1, the multimedia terminal-based vision protection service providing system 1 may include a multimedia terminal 100, a vision protection service providing server 300, and a guardian terminal 400. However, the multimedia terminal-based multimedia terminal-based vision protection service providing system 1 of FIG. 1 is only one embodiment of the present invention, and thus the present invention is not limited to FIG.

At this time, the respective components of FIG. 1 are generally connected through a network 200. For example, as shown in FIG. 1, the multimedia terminal 100 may be connected to the vision protection service providing server 300 through the network 200. In addition, the multimedia terminal 100 may be connected to the parent terminal 400 through the network 200. The eyesight protection service providing server 300 may be connected to the multimedia terminal 100 and the guardian terminal 400 through the network 200. [ The guardian terminal 400 may be connected to the multimedia terminal 100 and the vision protection service providing server 300 through the network 200. [

Here, the network 200 refers to a connection structure capable of exchanging information between nodes such as a plurality of terminals and servers. An example of such a network 200 is RF, 3rd Generation Partnership Project (3GPP) Network, an LTE (Long Term Evolution) network, a 5rd Generation Partnership Project (5 GPP) network, a World Interoperability for Microwave Access (WIMAX) network, the Internet, a LAN (Local Area Network) But are not limited to, a Wide Area Network (WAN), a Personal Area Network (PAN), a Bluetooth network, an NFC network, a satellite broadcast network, an analog broadcast network, and a DMB (Digital Multimedia Broadcasting) network.

The multimedia terminal 100 may be a terminal of a user who uses a vision protection service. At this time, the multimedia terminal 100 may be a terminal capable of measuring a distance between a screen and a viewer (a shooting object) such as a camera or an illuminance sensor. Also, the multimedia terminal 100 may be a terminal for outputting multimedia contents. The multimedia terminal 100 may be a terminal that downloads and executes a vision protection service web page, an application page, a program, or an application through the vision protection service providing server 300. The multimedia terminal 100 may be a terminal receiving an image or a moving image of each object and receiving an identifier for identifying the object, in order to identify the object. The multimedia terminal 100 controls illumination or sound when the shooting object is located at a predetermined distance from the first stage and when the shooting object is located at a distance of the second stage (shorter distance than the first stage) It may be a terminal that informs the user that it is approaching by a method other than illuminance or sound, or outputs a warning content. After the warning content is outputted a predetermined number of times, the multimedia terminal 100 hands over control authority to control the multimedia terminal 100 from the guardian terminal 400 through the vision protection service providing server 300 May be a terminal. In addition, the multimedia terminal 100 may block or filter the blue light when the preset shooting object is detected for a predetermined time or more, and compare the predetermined roughness difference with the measured roughness difference so that the roughness difference approaches the reference value And may be a terminal for adjusting the illuminance of the screen. The multimedia terminal 100 may be a terminal for outputting the sight protecting eye movement contents and allowing the shooting object to follow it when the preset shooting object is detected for a preset time or more. In addition, the multimedia terminal 100 may be a terminal that pauses a content that has been output when the shooting object does not maintain a predetermined distance, and transmits a message that a character included in the output content is to maintain distance .

Here, the multimedia terminal 100 may be implemented as a computer capable of connecting to a remote server or terminal through the network 200. [ Here, the computer may include, for example, an IPTV, a set-top box, a notebook equipped with a web browser (Web browser), a desktop, a laptop, and the like. At this time, the multimedia terminal 100 may be implemented as a terminal capable of connecting to a remote server or a terminal through the network 200. The multimedia terminal 100 is a wireless communication device with guaranteed portability and mobility, for example, a navigation system, a PCS (Personal Communication System), a GSM (Global System for Mobile communications), a PDC (Personal Digital Cellular) Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication) -2000, Code Division Multiple Access (CDMA) -2000, W-Code Division Multiple Access (W-CDMA), Wibro (Wireless Broadband Internet) A handheld based wireless communication device such as a smartphone, a smartpad, a tablet PC, and the like.

The vision protection service providing server 300 may be a server that provides a vision protection service web page, an app page, a program, or an application. In addition, the sight protection service providing server 300 may be a server that receives an image or a moving picture to distinguish a shot object to receive the sight protection service from the multimedia terminal 100. [ In order to increase the recognition rate of the image, it may be a server that stores and learns shooting objects at various angles or roughness as a reference image to the multimedia terminal 100. When the warning service providing server 300 detects that a predetermined number of warning messages have been outputted from the multimedia terminal 100, the vision protection service providing server 300 transmits the alert message to the multimedia terminal 100 as a guardian terminal 400 interlocked with the multimedia terminal 100. [ Lt; RTI ID = 0.0 > a < / RTI > In addition, the sight protection service providing server 300 transmits the content output from the multimedia terminal 100 to the multimedia terminal 100 for use in outputting the alert content of the multimedia terminal 100 Server. The sight protection service providing server 300 may be a server for identifying the age group of the photographed object, a favorite character, etc., and mapping and storing the photographed image as a labeled table.

At this time, the vision protection service providing server 300 may be implemented as a computer capable of connecting to a remote server or terminal through the network 200. Here, the computer may include, for example, a notebook, a desktop, a laptop, and the like on which a WEB browser is installed.

The guardian terminal 400 may be a terminal that is stored in association with the multimedia terminal 100 in the vision protection service providing server 300. The guardian terminal 400 may be a terminal that receives the control authority of the multimedia terminal 100 through the vision protection service providing server 300 when the warning has exceeded the preset number of times in the multimedia terminal 100 . Then, the caregiver terminal 400 may be a terminal for allowing a screen shot by the guardian terminal 400 to be output from the multimedia terminal 100 through a control channel.

Here, the guardian terminal 400 may be implemented as a computer capable of connecting to a remote server or terminal through the network 200. [ Here, the computer may include, for example, a notebook, a desktop, a laptop, and the like on which a WEB browser is installed. At this time, the guardian terminal 400 can be implemented as a terminal that can access a remote server or terminal through the network 200. [ The guardian terminal 400 is a wireless communication device with guaranteed portability and mobility, such as navigation, PCS (Personal Communication System), GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication) -2000, Code Division Multiple Access (CDMA) -2000, W-Code Division Multiple Access (W-CDMA), Wibro (Wireless Broadband Internet) A handheld based wireless communication device such as a smartphone, a smartpad, a tablet PC, and the like.

FIG. 2 is a block diagram for explaining a multimedia terminal shown in FIG. 1, FIG. 3 is a view for explaining an embodiment in which a vision protection service is implemented according to an embodiment of the present invention, FIG. FIG. 5 is a diagram illustrating an embodiment in which the vision protection service is implemented by a method of adjusting a screen according to distance according to an embodiment of FIG.

2, a multimedia terminal 100 according to an exemplary embodiment of the present invention includes a storage unit 110, a calculation unit 120, a comparison unit 130, a reduction unit 140, a stop unit 150, An alarm unit 160, a visual deterioration preventing unit 170, a blocking unit 180, and an illumination unit 190.

The visual acuity protection service providing server 300 according to the embodiment of the present invention or another server (not shown) operating in conjunction with the visual acuity protection service providing server 300 may transmit multimedia data to the multimedia terminal 100, The multimedia terminal 100 and the guardian terminal 400 may transmit multimedia-terminal-based vision protection service applications, programs, app pages, web pages, etc., Can be installed or opened. In addition, a service program may be executed in the multimedia terminal 100 and the parent terminal 400 using a script executed in a web browser. Here, a web browser is a program that enables a WWW (World Wide Web) service, and is a program for receiving and displaying hypertext described in hypertext mark-up language (HTML), for example, Netscape (Netscape) An Explorer, chrome, and the like. Further, the application refers to an application on the terminal, for example, an app (app) running on a mobile terminal (smart phone).

At this time, the connection of the network 200 is performed by connecting the multimedia terminal 100, the vision protection service providing server 300, and the protector terminal 400 to the communication terminal through the communication object for communication with the terminal connected to the network 200 . The eyesight protection service providing server 300 can exchange data with each other through a communication object.

The storage unit 110 may photograph a face to identify a shooting object, and may store and store at least one identifier included in the shooting object. For example, let's assume that people who use vision protection services are children (one child) and one nation (child two). At this time, if the face size of Korean and Korean is not stored as the reference value, it is impossible to know how much the size and the size of the face have reached. In addition, if Korean and Korean do not distinguish each other's face, it may happen that Korea is not able to use the sight protection service program when the Korean government uses it. Accordingly, by dividing each person (shooting object) and storing a reference value corresponding to the face size of the divided person in advance, the distance can be grasped by using the detected or photographed face image and the like, .

At this time, the shooting object can be identified based on the image analysis and the similarity from the previously stored and set image or moving image, and at least one identifier is included in the face, and an identification for identifying the distance between the camera and the face of the multimedia terminal 100 Object. Also, the at least one identifier can be identified and distinguished based on the image similarity with the previously stored identifier image template.

The calculating unit 120 may compute the distance between the multimedia terminal 100 and the photographing object by comparing the at least one identifier and the predetermined parameter. At this time, the at least one identifier may be the size of the user's pupil, the size of the face, the size of the nose, the size of the eyes, and the like. For example, assuming that the face size of the user A is 10 cm, the distance is 25 cm, and the face size is 5 cm, the face size on the photographing frame and the distance between the user and the terminal are calculated can do. However, in order to calculate the distance between the terminal and the user, it is obvious that not only the face size but also various methods can be used.

The comparing unit 130 may compare the calculated distance with the stored step-by-step distance. For example, suppose an ideal distance between a face and a terminal is set to 40 cm, and if it is less than 15 cm, it can cause nearsightedness. At this time, the distance between the face and the terminal may be proportional to the resolution (size) of the screen. In other words, the larger the screen, the more ideal the farther the distance is, and the smaller the screen, the smaller the screen is. In this case, when used at a distance of less than 15 cm for 30 minutes, the myocardial increase and the distance correctional visual acuity decrease, 15 cm can be set as the distance of the second step, and when used at 40 cm distance for 30 minutes, The distance of the first step may be set to 40 cm based on an experiment that there is no change in the corrected visual acuity. However, the present invention is not limited to this and may be set differently depending on the size of the screen, illuminance, brightness, and the like.

The reduction unit 140 may reduce the illuminance of the multimedia terminal 100 when the calculated distance is the distance of the first stage, but gradually decrease the illuminance at the distances of the first stage and the second stage or more. Referring to the above example, it is possible to reduce the illuminance of the multimedia terminal 100 when the distance between the user (photographing object) and the terminal is the distance of the first step, that is, 40 cm. In this case, when the distance is less than 40 cm or more and 15 cm or more, the shorter the distance, the smaller the illuminance can be. For example, if the screen brightness was 100% of 100% at 40 cm, it could be reduced to 50% at 30 cm and 20% at 15 cm. At this time, the illuminance and distance may be proportional, but may not be linear.

At this time, the reduction unit 140 reduces the illuminance of the multimedia terminal 100 when the calculated distance is the distance of the first stage, but gradually decreases the illuminance at the distances of the first stage and the second stage or more If the calculated distance is also the distance of the first step, if the sound outputted from the multimedia terminal 100 exists, the sound is decreased, but the sound is gradually reduced at the distances of the first step and the second step or more Can be added. In other words, the reduction unit 140 can reduce both the illumination and the sound, so that the user can not see or listen to the sound unless it is maintained over a certain distance. Conversely, when the reduction unit 140 is maintained at a predetermined distance or more, it is possible to restore the illumination and sound to the normal state.

When the calculated distance is the distance of the first step, the reduction unit 140 reduces the illuminance of the multimedia terminal 100, but gradually decreases the illuminance at the distance from the first step and beyond the second step The magnification of the content output from the multimedia terminal 100 can be increased while reducing the illuminance of the multimedia terminal 100 when the calculated distance is the distance of the first stage. That is, when the content is enlarged to such an extent that it can not be viewed, if the predetermined distance is not maintained, the viewer can not view the proper content. Accordingly, it is possible to view the contents properly when they are far away, but can automatically move away by viewing the enlarged contents (distorted contents) when they are close to each other.

The stop unit 150 may stop the screen of the multimedia terminal 100 until the calculated distance reaches the distance of the first step when the calculated distance is less than the second step. For example, an effective way to move a child away from the multimedia terminal 100 over a certain distance may be to play the content being played back. Of course, the present invention is not limited to this, but it may surprise the sound suddenly to retreat, or conversely, reduce the sound to make it inaudible if it does not retreat for a certain distance, (Deformation), or a method of imparting distortion, but the present invention is not limited thereto.

The alarm unit 160 stops the screen of the multimedia terminal 100 until the calculated distance reaches the distance of the first step when the distance calculated in the stopping unit 150 is less than the second step And then output the warning notification content on the stopped screen. When the alert notification content is output a predetermined number of times or more, the alarm unit 160 transmits the warning notification content to the multimedia terminal 100 through the guardian terminal 400 interfaced with the multimedia terminal 100 from the vision protection service providing server 300. [ Can be handed over. At this time, the guardian terminal 400 can start controlling the multimedia terminal 100 through the control channel to which the control authority is set.

At this time, the warning notification content may be a warning that the screen will not be output if the distance is not maintained over the distance of the first step, and the subject of the warning may be a character preferred by the shooting object (viewer). At this time, the preferred character may be stored in the sight protection service providing server 300, stored in the multimedia terminal 100, or may be streamed from the multimedia terminal 100 in the case of the former. If my favorite content does not come out, my parents will come out to the screen and say, "XX, I told my dad to go back and see!", "If my favorite Pororo does not come out, my father suddenly appears, Children can act as a reason to dislike their parents, so they can keep their favorite characters out and stay at a certain distance. However, it is not limited to this, and it does not exclude that the parents come out and give instructions.

When photographing a face in the multimedia terminal 100, the camera included in the multimedia terminal 100 is driven, and a background mode and a hidden mode are set so that the screen of the camera being driven is not output from the multimedia terminal 100 Can be driven. Accordingly, the viewer (shooting object) can be prevented from recognizing that the camera is running.

In addition, the distance of the first step and the distance of the second step are proportional to the resolution and size of the multimedia terminal 100, and the distance of the second step may be shorter than the distance of the first step.

When the distance calculated by the stopper 150 is less than the second step, the visual depression preventing unit 170 displays the screen of the multimedia terminal 100 until the calculated distance reaches the distance of the first step When the time detected by the multimedia terminal 100 is longer than a preset time, the eye movement contents can be outputted. In addition, the visual deterioration preventing unit 170 compares the outputted eye movement contents with the eye movement of the photographing object photographed by the multimedia terminal 100, and compares the eye movement frame with the reference eye movement frame included in the eye movement contents If the similarity of the object frame exceeds the predetermined similarity value, the eye movement content may be terminated. At this time, the eye movement contents can be controlled to be outputted at a predetermined cycle.

For example, Group 1 (15 cm viewing distance) using a smartphone for 15 minutes at a distance of 15 cm showed statistically significant decrease in distance corrected visual acuity (p = 0.030) and myopia = 0.001), and the increase in myopia was assumed to be no longer statistically significant after 5 minutes after the use of the smartphone (p≥0.464, paired-samples t test). On the other hand, the change in visual acuity before and after using the smartphone was not statistically significant (p = 0.163), and the change in refractive power was statistically significant (P = 0.077, paired-samples t test).

In such a situation, it is recommended to keep the use distance of 40 cm in order not to affect the refraction abnormality and the distance correction visual acuity when using a smartphone. If you use the smartphone near the recommended use distance of 40 cm, And distance calibration, it is recommended to have at least 30 minutes of rest and 5 minutes of rest after using the smartphone in order not to affect the visual acuity. Therefore, if you do not keep 40cm, . However, the present invention is not limited thereto, but it is obvious that the period may be increased or decreased.

The blocking unit 180 stops the screen of the multimedia terminal 100 until the calculated distance reaches the distance of the first step when the distance calculated by the stopping unit 150 is less than the second step When the photographed object photographed by the multimedia terminal 100 is photographed beyond a predetermined time, the blue light of the predetermined wavelength of the light output from the multimedia terminal 100 may be blocked. In other words, since it is possible to eliminate harmful elements to the eye by merely blocking the blue light, a program for blocking blue light can be driven.

The illuminance unit 190 stops the screen of the multimedia terminal 100 until the calculated distance reaches the distance of the first step when the distance calculated by the stop unit 150 is less than the distance of the second step The illuminance collected through the camera of the multimedia terminal 100 and the predetermined reference illuminance can be compared with each other. In addition, the illuminance unit 190 may reduce the illuminance of the screen of the multimedia terminal 100 to satisfy the reference illuminance difference when the difference between the illuminance values collected from the reference illuminance is larger than the predetermined reference illuminance difference.

That is, at low illumination, viewing can have a greater impact on visual acuity and control ability. The visual acuity can be influenced by various factors, such as the area of the retina being stimulated, the intensity of light, the spectrum of light, the time of exposure to light, the motion of the object, and the distribution of illumination. Therefore, when the illuminance is low, the control force becomes small because the size of the pupil increases in the dark illuminance, and the larger the pupil size, the smaller the control power becomes.

In other words, when a worker using a smartphone is used for a long period of time, the state of the ciliary body tends to be maintained, and the distant refractive error state exhibits refractive errors such as an increase in nearsightedness or a decrease in the originality. For example, based on a study (p = 0.006) that there was a change of -0.17 ± 0.60 D when viewing a smartphone for 1 hour at low illumination and measuring distance power, Adjust the brightness so that there is no difference between the brightness of the smartphone and the brightness of the smartphone.

In addition, in order to prevent the consumption of computing resources or the delay in content reproduction, which may occur in the process of recognizing an image with the camera when the distance is measured, the multimedia terminal 100 may measure the distance An ultrasonic sensor may also be used. For example, an ultrasonic sensor can be used to judge the presence of a person and automatically turn on / off the monitor by turning on / off the monitor. Also, if a person is within a certain distance, Thereby protecting the eyes of the children and the like.

In this case, the ultrasonic sensor may use laser light. The laser sensor is a very useful method for measuring the distance by the light flight time or the triangulation. However, since there arises a problem that the laser light should be projected onto the human body, An ultrasonic sensor can be used safely. However, it does not exclude laser sensors.

At this time, the generation and detection of ultrasonic waves are largely divided into electromagnetic induction phenomenon, magnetostriction phenomenon, and piezoelectric phenomenon, and it is common to use one of them. Here, the ultrasonic sensors have the same structure and can generate and detect ultrasonic waves, and they are collectively referred to as ultrasonic sensors. Ultrasonic sensors often use the existence of ultrasonic waves and relative sizes of ultrasonic pulse waves rather than absolute values of ultrasonic waves. The echo phenomenon of the echo can be used. In other words, the operation principle is to detect the presence or absence of an object by measuring and analyzing a time difference between sound waves having an emitter portion for generating a sound wave.

The ultrasonic sensor according to an exemplary embodiment of the present invention may include a transducer, an analyzer, and an output circuit. The ultrasonic sensor may measure the distance of the ultrasonic sensor to control the electricity. In other words, when the person is within 40cm, the monitor will beep. This is because the nearer the distance is, the worse the health of each species, such as the deterioration of visual acuity due to electromagnetic waves, may be affected. In addition, when the power is 20 cm or less, the power of the monitor can be automatically turned off. In the case of children, the computer may be used too close to the computer, or the computer may not be turned off after the computer is used after the computer has been used, so that the computer is automatically turned off to save power.

Hereinafter, a multimedia terminal-based vision protection service having the above-described configuration will be described with reference to FIGS. 3 and 4. FIG.

Referring to FIG. 3, (a) (1) (1) The multimedia terminal 100 is registered in the sight protection service providing server 300, and characters, images and the like for identifying the user are tagged and stored. (2) Then, when the vision protection service providing server 300 transmits a program, an application, a web page, etc. for sight protection to the multimedia terminal 100, (3) the multimedia terminal 100 installs a program, do.

(4) The multimedia terminal 100 distinguishes a child (a shooting object, a viewer), (5) calculates a distance between the shooting object and the multimedia terminal 100, (6) adjusts illumination or sound according to a preset algorithm, (Distance of the second step) which is not close enough to be calculated.

Then, when the predetermined warning is output, the multimedia terminal 100 hands over the control right so that the control authority is held in the guardian terminal 400. (9) The guardian terminal 400 receives a warning Of their children, and can monitor what they are currently doing. At this time, the guardian terminal (9), (10) may turn off the multimedia terminal 100 so that the multimedia terminal 100 can not be driven, output the warning content, or talk directly while watching the shooting screen of the children.

(b) For example, if the distance between the shooting object (viewer) and the multimedia terminal 100 is less than the distance of the first step or the distance of the first or second step, If it is less than the second step, the warning content is outputted. If the first step is maintained, the loop is returned to the original content again.

Referring to FIG. 4, the multimedia terminal 100 is controlled in stages. However, the present invention is not limited thereto. First, the multimedia terminal 100 lowers the illuminance and sound when it is between 25 cm and 20 cm, outputs a warning if it is between 20 cm and 15 cm, may turn off the screen when it is 15 cm-10 cm, have.

The method for providing the multimedia-terminal-based vision protection service of FIGS. 2 to 4 will not be described in detail with reference to FIG. 1, It is possible to deduce that the following description will be omitted.

5 is a diagram illustrating a process in which data is transmitted and received between the respective components included in the multimedia-terminal-based vision protection service providing system of FIG. 1 according to an exemplary embodiment of the present invention. Hereinafter, an example of a process in which data is transmitted and received between the respective components will be described with reference to FIG. 5. However, the present invention is not limited to such an embodiment, It is apparent to those skilled in the art that the process of transmitting and receiving data can be changed.

5, the vision protection service providing server 300 receives an image and a delimiter to register a user from the multimedia terminal 100 and classify the child (S5100), and registers the guardian terminal 400 to be associated therewith (S5200).

Then, the vision protection service providing server 300 transmits the application or the like to the multimedia terminal 100 (S5300), the multimedia terminal 100 registers the terminal and the object (S5400), sets the reference value and the distance (S5500).

If the child (photographing object) is identified (S5600), the distance between the terminal and the child is calculated by the face size or the like (S5700). If it is less than the first distance (S5700), the illumination and sound are controlled (S5810) (S5850). If the warning exceeds the predetermined number N (S5870), the caregiver terminal 400 is informed via the vision protection service providing server 300 (S5900) , And controls the multimedia terminal 100 in the guardian terminal 400 (S5910, S5930).

The order between the above-described steps S5100 to S5930 is merely an example, but is not limited thereto. That is, the order between the above-described steps S5100 to S5930 may be mutually varied, and some of the steps may be executed or deleted at the same time.

The method of providing the multimedia-terminal-based vision protection service of FIG. 5 is not described in detail with reference to FIGS. 1 to 4, It is possible to deduce that the following description will be omitted.

6 is a flowchart illustrating a method of providing a multimedia terminal-based vision protection service according to an exemplary embodiment of the present invention. Referring to FIG. 6, the multimedia terminal identifies a shooting object by photographing a face, separates at least one identifier included in the shooting object, and stores the identifier (S6100).

In step S6300, the multimedia terminal compares the calculated distances with previously stored distances, and compares the distances with at least one identifier and predetermined parameters, and calculates a distance between the multimedia terminal and the shooting object in step S6200.

If the calculated distance is the distance of the first stage, the multimedia terminal decreases the illuminance of the multimedia terminal, but gradually reduces the illuminance at the distances of the first stage and the second stage and beyond (S6400).

Finally, if the calculated distance is less than the second step, the multimedia terminal stops the screen of the multimedia terminal until the calculated distance reaches the distance of the first step (S6500).

The method of providing the multimedia-terminal-based vision protection service of FIG. 6 has not been described. The method of providing the multimedia-terminal-based vision protection service can be easily or simply It is possible to deduce that the following description will be omitted.

The method of providing a multimedia terminal-based vision protection service according to the embodiment described with reference to FIG. 6 may also be implemented in the form of a recording medium including instructions executable by a computer, such as an application executed by a computer or a program module have. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer readable medium may include both computer storage media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.

The method of providing a multimedia terminal-based vision protection service according to an embodiment of the present invention may be implemented by an application installed in a terminal (which may include a program included in a platform or an operating system basically installed in the terminal) And may be executed by an application (that is, a program) directly installed on a master terminal by a user through an application providing server such as an application store server, an application, or a web server associated with the service. In this regard, the method of providing a multimedia terminal-based vision protection service according to an embodiment of the present invention is basically installed in a terminal or implemented as an application (i.e., a program) directly installed by a user, Lt; / RTI >

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Claims (10)

A method of providing a vision protection service executed in a multimedia terminal,
Identifying a photographed object by photographing a face, and distinguishing and storing at least one identifier included in the photographed object;
Comparing the identified at least one identifier with a predetermined parameter, and calculating a distance between the multimedia terminal and the photographing object;
Comparing the calculated distance with a stored stepwise distance;
Decreasing the illuminance of the multimedia terminal when the calculated distance is the distance of the first stage, gradually increasing the illuminance at distances of the first stage and the second stage or more; And
And stopping the screen of the multimedia terminal until the calculated distance reaches the distance of the first step when the calculated distance is less than the second step,
The distance of the first step and the distance of the second step are proportional to the resolution and size of the multimedia terminal,
Wherein the distance of the second step is shorter than the distance of the first step.
The method according to claim 1,
Wherein the step of decreasing the illuminance of the multimedia terminal when the calculated distance is the distance of the first stage is reduced in the distance of the first stage and the second stage or more,
And if the calculated distance is also the distance of the first step, if the sound outputted from the multimedia terminal exists, the sound is decreased, and the sound is gradually reduced ;
Wherein the multimedia terminal-based vision protection service comprises:
The method according to claim 1,
After the step of stopping the screen of the multimedia terminal until the calculated distance reaches the distance of the first step when the calculated distance is less than the second step,
Outputting an alert notification content on the stopped screen;
Further comprising:
When the warning notification content is output a predetermined number of times or more, the control right of the multimedia terminal is handed over from the sight protection service providing server to the parent terminal connected to the multimedia terminal,
Wherein the guardian terminal starts controlling the multimedia terminal through the control channel to which the control authority is set.
The method according to claim 1,
Wherein the step of decreasing the illuminance of the multimedia terminal when the calculated distance is the distance of the first stage is reduced in the distance of the first stage and the second stage or more,
Increasing the magnification of the content output from the multimedia terminal while reducing the illuminance of the multimedia terminal if the calculated distance is the distance of the first stage;
Wherein the multimedia terminal-based vision protection service comprises:
The method according to claim 1,
Wherein the multimedia terminal is driven in a background mode and a hidden mode so as to drive a camera included in the multimedia terminal when the face is photographed by the multimedia terminal but the screen of the camera being driven is not output from the multimedia terminal, A method of providing a terminal based vision protection service.
The method according to claim 1,
The method comprising the steps of: photographing the face to identify a shooting object; sorting and storing at least one identifier included in the shooting object;
Wherein the shooting object is identified based on image analysis and similarity from previously stored and set images or moving images,
Wherein the at least one identifier is an identification object included in the face for identifying a distance between the camera of the multimedia terminal and the face,
Wherein the at least one identifier is identified and identified based on image similarity with a previously stored identifier image template.
delete The method according to claim 1,
After the step of stopping the screen of the multimedia terminal until the calculated distance reaches the distance of the first step when the calculated distance is less than the second step,
Outputting an eye movement content when the time detected by the multimedia terminal exceeds a predetermined time, from the image object identified as a face in the multimedia terminal;
Comparing the outputted eye movement contents with eye movement of a shooting object photographed by the multimedia terminal;
Ending the eye movement content if the similarity degree between the reference eye movement frame included in the eye movement content and the captured image shooting frame exceeds the preset similarity value as a result of the comparison;
Further comprising:
Wherein the eye movement content is controlled to be output at a predetermined cycle.
The method according to claim 1,
After the step of stopping the screen of the multimedia terminal until the calculated distance reaches the distance of the first step when the calculated distance is less than the second step,
Blocking a blue light of a predetermined wavelength from light output from the multimedia terminal when a photographed object photographed by the multimedia terminal is photographed for a predetermined period of time;
Further comprising the step of providing a multimedia terminal-based vision protection service.
The method according to claim 1,
After the step of stopping the screen of the multimedia terminal until the calculated distance reaches the distance of the first step when the calculated distance is less than the second step,
Comparing the illuminance collected through the camera of the multimedia terminal with a predetermined reference illuminance;
Reducing the illuminance of the screen of the multimedia terminal to satisfy the reference illuminance difference when the difference between the illuminance values is larger than the predetermined reference illuminance difference than the reference illuminance value;
Further comprising the step of providing a multimedia terminal-based vision protection service.

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