KR101002501B1 - Method and apparatus of displaying crossing signal with mobile phone for blind person - Google Patents

Abstract

The present invention is to check the crossing signal state and time information with a portable terminal, and a high-frequency unit for receiving the down-crossing signal to the radio output from the crossing and down-converted to output the baseband signal; A control unit for separating and detecting a crossing signal by analyzing a baseband signal applied from the high frequency unit, and controlling and monitoring each functional unit; A crossing signal processing unit for inputting a crossing signal from the control unit and analyzing and outputting a blinking state and remaining time information of a traffic light; A visual display unit for processing and visually displaying a control signal and crossing state information applied from the controller; A voice unit for processing the control signal and the crossing state information applied from the controller to output a voice signal; The mobile terminal comprises a braille unit for processing the control signal and the crossing state information applied from the control unit and outputting it as a braille signal, and the like is configured by the mobile terminal for the visually impaired. Because it accurately checks the braille signal, it has the effect of improving social welfare crossing the railroad crossing safely and using the additional function of the mobile terminal to improve the utilization.

Description

Display device and method for visually impaired crossing signal mobile terminal {METHOD AND APPARATUS OF DISPLAYING CROSSING SIGNAL WITH MOBILE PHONE FOR BLIND PERSON}

1 is a functional configuration diagram of a general mobile communication system,

2 is an explanatory diagram of providing a location information of a mobile communication system for a blind person in the related art;

3 is a view showing a crossing control area installed in the crossing of a blind;

4 is a functional block diagram of a visually impaired crosswalk signal display device of the present invention;

5 is a functional block diagram of a crosswalk signal display device for the visually impaired crosswalk of the present invention;

6 is a diagram illustrating an encrypted crosswalk signal configuration according to one embodiment of the present invention;

7 is a flow chart of a crosswalk of the visually impaired crosswalk signal display method of the present invention;

8 is a flow chart of a visually impaired crosswalk signal display method of the present invention.

           ** Explanation of symbols on the main parts of the drawing **

100: portable terminal 110,250: high frequency unit 120: control unit

130: cross signal processing unit 140: time display unit 150: audio unit

160: Braille part 200: Crossing section 210: Crossing signal generator

220: traffic light unit 230: encryption unit 240: modulation unit

The present invention is to display the crossing signal state using a mobile terminal for mobile communication, in particular, the visually impaired crossing signal portable terminal display device for the visually impaired to easily check the current state and remaining time information of the traffic light at the crossing And to a method.

The mobile terminal (MS) is a wireless terminal that instantly moves and communicates with the other party anytime and anywhere while freely moving in a service area formed by a base station (BS) of a registered mobile communication system. It is a device to carry and communicate while moving.

Such a mobile terminal promptly solves an individual's communication needs, and is used as a means for promptly delivering or securing necessary information to the other party anytime, anywhere, and in particular, in case of a person with a discomfort, such as a visually impaired person.

The mobile communication system can identify the current location of a mobile terminal (MS) in units of cells (CELL), which are service areas generated by a base station (BS), and use a global positioning system (GPS) method using satellites. , You can check the current location more precisely.

As described above, the direction information for moving on the road is guided to the mobile terminal using the location information by the BS or the GPS, but it does not provide danger information that requires waiting time, such as traffic lights on each road. In particular, there is a problem that can not provide the display information, such as whether the crossing signal lights for the visually impaired, the remaining time.

Therefore, there is a need to develop a method for providing a blind person with a lighting signal and remaining time information using the portable terminal.

Hereinafter, according to the prior art, a location information providing portable terminal device for the visually impaired will be described with reference to the accompanying drawings.

1 is a functional configuration diagram of a general mobile communication system, and FIG. 2 is a diagram illustrating a method of providing location information of a mobile communication system for the visually impaired in the prior art.

Referring to FIG. 1, a general mobile communication system includes a mobile terminal (MS) 10 that communicates by wirelessly connecting with the other party anytime and anywhere while moving in the service area 25 of the mobile communication system;

A base station (BS) 20 which wirelessly connects to the portable terminal 10 and transmits and receives a communication signal and forms a mobile communication service area 25;

A mobile switching station (MSC: MOBILE SWITCHING CENTER) that connects to the base station 20 and analyzes the call connection request signal of the mobile terminal 10 to establish a communication path by switching and to monitor and control the operation of the entire mobile communication system. 30).

Hereinafter, the general mobile communication system having the above configuration will be described in detail. When the mobile terminal 10 moves freely through the service area 25 formed by the base station 20, Instantly connect and communicate with other parties anywhere.                         

The base station 20 forms a service area or a cell area for transmitting and receiving a communication signal through a wireless connection with a mobile terminal, and moves to anywhere in the country since the service area covers the whole country. Will communicate.

As described above, the control for allowing the mobile terminal 10 to communicate while moving, since the base station 20 confirms the location information of the mobile terminal 10 and notifies the mobile switching center, the mobile switching station of the mobile terminal 10 If there is a call connection request for calling the mobile terminal 10 by checking the current position, the incoming signal is transmitted through the base station 20, and the position of the mobile terminal 10 from any base station 20. If it does not detect a guide to the communication with the portable terminal 10 is impossible.

As described above, the base station for confirming the location of the mobile terminal, in particular, in the code division multiple access method mobile communication system, since signals output from the plurality of mobile terminals 10 must be received at the same reference level at the base station 20, The base station 20 detects an output level received from each of the mobile terminals 10, and transmits a control signal to each of the mobile terminals 10 that increases when the level is lower than the reference level and decreases when the level is higher than the reference level. send.

In general, when the signal output from the mobile terminal 10 has a constant level (LEVEL), the level received at the base station 20 by a straight line distance between the mobile terminal 10 and the base station 20. There will be a difference.

As described above, when the level of the radio signal output from the mobile terminal 10 is checked and the base station 20 confirms the level of the radio signal received, the base station 20 relatively compares the level of the received signal. ), The linear distance from the mobile terminal 10 to the mobile terminal 10 is measured.

The mobile switching center 30 calculates a linear distance from each of several adjacent base stations 20 by the mobile terminal 10 and performs a corresponding calculation process, so that the mobile terminal 10 confirms an accurate current position of the mobile terminal 10. Since the direction is estimated, check the expected traveling direction.

Hereinafter, a method of providing location information of a mobile communication system for the visually impaired in the prior art will be described with reference to FIG. 2.

The mobile terminal 10 is used by the visually impaired, and receives direction information from the base station 20 up to the moving destination and outputs the voice.

Each of the base stations 20 is controlled and monitored by the mobile switching center 30. The base station 20 detects a current position and a moving direction of the mobile terminal 10 and transmits the same to the mobile switching center 30. The mobile switching center 30 ) Analyzes the moving destination, the current location and the direction of movement of the mobile terminal 10 used by the visually impaired, and outputs the current direction information to the base station 20, and the base station 20 Since it is transmitted to the mobile terminal 10, the visually impaired person confirms the direction information.

In the prior art as described above, and analyzes the current position and the moving direction of the mobile terminal 10 used by the visually impaired, and present only the direction toward the destination, the road in the presented direction has an intersection point, in the intersection point as described above There is a pedestrian crossing 40, and the pedestrian crossing 40 is separately provided with a traffic light indicating stop and walk.                         

The intersection point is a traffic light to control the traffic flow, and in general, the traffic signal itself to analyze the traffic volume to smooth the flow of traffic, the control signal and the flashing cycle of the traffic light is changed from time to time, and in case of failure or emergency Operated by manual control by personnel.

In the case of the crosswalk 40 traffic lights formed at the intersection as described above, since the operation is linked to the traffic lights of the intersection, the signal system is changed from time to time in conjunction with the intersection traffic lights that change depending on the traffic volume.

However, in the mobile switching center 30 of the mobile communication system, it is difficult to check the exact position of the crosswalk 40, and in particular, it is not possible to check the flashing of the traffic light of the crosswalk, so that the visually impaired person crosses the crosswalk or the crossing. There is a problem that does not check the exact position of the crosswalk or crossing, or whether to wait, or at the same time the mobile communication system does not check the corresponding state at the crossing and can not command.

The present invention directly transmits the position of the crosswalk and the signal state of the traffic light to the mobile terminal for the visually impaired adjacent to the traffic light, so that the remaining time until the blind person changes to the current crossing position and the flashing state of the traffic light and the next sequence signal. It is an object of the present invention to provide a display device and method for a visually impaired crosswalk signal portable terminal for easily identifying the visually impaired.

The present invention has been made in order to achieve the above object, the high-frequency unit for receiving a radio signal from the cross-walk crossing and down-converts the baseband signal to output; A control unit for separating and detecting a crossing signal by analyzing a baseband signal applied from the high frequency unit, and controlling and monitoring each functional unit; A crossing signal processing unit for inputting a crossing signal from the control unit and analyzing and outputting a blinking state and remaining time information of a traffic light; A visual display unit for processing and visually displaying a control signal and crossing state information applied from the controller; A voice unit for processing the control signal and the crossing state information applied from the controller to output a voice signal; The mobile terminal comprises a braille unit for processing a control signal and crossing state information applied from the controller and outputting the braille signal.

In addition, the present invention devised in order to achieve the above object, a crossing signal generating section for generating and outputting a crosswalk signal for limiting crosswalk traffic; A signal lamp unit for outputting a visual signal for limiting crossing traffic by a crossing signal inputted from the crossing signal generator; An encryption unit for encrypting the crossing signal inputted from the crossing signal generation unit; A modulator for modulating the signal applied from the encryption unit to be analyzed by the portable terminal; Characterized in that the cross-section consists of a high frequency unit for converting the signal applied from the modulator up-converted so that the portable terminal receives.

In addition, the present invention has been made in order to achieve the above object, the mobile terminal, when receiving a crosswalk signal from the crosswalk, the starting process of separating and detecting the signal area; An instruction step of analyzing the signal area detected in the above process and outputting a crossing indication signal when the signal state is crossing, and outputting a standby indication signal when the analyzed signal state is waiting; It is characterized in that the time signal is separated from the crossing signal of the process, the time zone is analyzed and the remaining time is outputted in the manner set together with the indication signal.

In addition, the present invention devised in order to achieve the above object, the crossing section is a preparation process for determining whether to operate a crosswalk signal to limit the passage of the crosswalk; A signal process of detecting and encrypting a blinking state signal of a traffic light and encrypting a crossing signal by detecting a remaining lighting time of a lit traffic light when operating the crosswalk signal determined in the above process; When the encrypted crosswalk signal of the above process is modulated by a mobile communication method and outputted as a high frequency signal, the process of returning to the preparation process and continuing if it does not continue consists of an output process of proceeding to the end. It is characterized by.

Hereinafter, the present invention will be described with reference to the accompanying drawings an apparatus and a method for displaying a visually impaired crossing signal portable terminal.

3 is a view illustrating a control area of a crossing unit installed at a crosswalk for a visually impaired person, and FIG. 4 is a functional diagram of a portable terminal of a visually impaired crosswalk signal display device according to the present invention. 5 is a functional block diagram of a crosswalk signal display device for visually impaired crosswalk signal display according to the present invention, FIG. 6 is an example of the present invention, which is an encrypted crosswalk signal configuration state diagram, and FIG. FIG. 8 is a flowchart illustrating a crosswalk signal display method for a disabled crosswalk signal display method. FIG.

3 is a state road crossing section installed at the crossing for the visually impaired, the crossing section 200 is installed on both sides of the crosswalk or crosswalk 45, respectively, the crossing section 200 is a crosswalk Only a part is formed by the control area 205.

The control area 205 may be only both portions of the crosswalk 45, and may include the entire area of the crosswalk 45 as necessary.

4 is to display a crosswalk signal for the mobile terminal 100 for the visually impaired, and receives a crosswalk signal that is wirelessly output from the crosswalk 200 of the crosswalk or the crosswalk 45, and receives the crosswalk signal. High frequency unit 110 for converting and outputting the baseband signal,

Detecting the crossing signal by analyzing the baseband signal applied from the high frequency unit 110 and controlling and monitoring each function unit, and detecting the crossing signal from the baseband signal input from the high frequency unit 110. Output to the cross signal processing unit 130; Control unit for outputting the crossing signal of the crossing state information input from the crossing signal processing unit 130 to the time display unit 140, the voice unit 150 and the braille unit 160 to display the time signal, the audio signal and the braille signal, respectively. 120,

Input the crosswalk signal from the control unit 120 and analyze and output the flashing state of the traffic light and the remaining time information, input the crosswalk signal, detect the flashing state of the traffic light and the remaining time of the lit signal, and then cross the crossing state A crossing signal processing unit 130 outputting the crossing signal based on the information to the controller 120;                     

A time display unit 140 for displaying the crossing signal of the control signal and the crossing state information applied from the controller 120 to visually confirm the crossing signal;

A voice unit 150 for processing the control signal and the crossing signal of the crossing state information applied from the controller 120 to output the crossing signal as a voice signal;

The control signal applied from the control unit 120 and the crossing signal of the crossing state information is processed by braille unit 160 for outputting to check the crossing signal as a braille signal.

Hereinafter, according to the present invention having the above configuration, a portable terminal for displaying a visually impaired crossing signal will be described in detail.

The visually impaired crosswalk signal display portable terminal 100, down-converting and demodulating (DEMODULATION) the high-frequency crosswalk signal received by the high frequency unit 110 from the crosswalk 200, and the baseband signal ( BASE BAND SIGNAL) is converted to the control unit 120 and output to the control unit 120, the control unit 120 determines whether the input signal is a crosswalk signal, if the crosswalk signal received from the crosswalk unit 200, the crosswalk signal processing unit Output to 130.

The crossing signal processing unit 130 inputs and analyzes a crossing signal consisting of 16 bits, detects and decodes a signal region consisting of two bits, and thus checks the blinking state of the crossing signal, and outputs a signal for crossing the current crossing. Outputs a signal that determines whether a signal to be outputted to the controller 120, and analyzes the 16-bit crossing signal and detects and decodes the 8-bit time region, thereby checking the remaining lighting time information of the currently lit signal. To the control unit 120.

The control unit 120 is input from the crosswalk signal processing unit 130, and outputs a flashing state of the crosswalk signal light and lighting remaining time information to the time display unit 140 to visually display the crosswalk signal, and the voice unit Output to 150 to display the crossing signal as a voice signal, and output to the braille unit 160 to display the crossing signal as a braille signal.

The control unit 120 drives all or part of the time display unit 140, the audio unit 150, and the braille unit 160 for outputting a crossing signal by selection, and the braille unit 160 protrudes. Display the crossing signal by the signal display, or display the crossing signal by partial heat using a technique disclosed in Korean Patent Laid-Open No. 2001-0063411 (July 9, 2001).

The encrypted crosswalk signal inputted by the crosswalk signal processor 130, analyzed, and processed is composed of 16 bits as shown in FIG. 6, and allocates a1 and a2 areas to the signal area. The blinking state is encrypted and displayed, and the encrypted blinking state as described above is, for example, as follows.

(Signal blinking status table)

a1 a2  Flashing status 0 0 0 One Red traffic light One 0 Blue traffic light One One

As shown in the above table, the signal light blinking state is decoded and analyzed by decoding and analyzing the crossing signal encrypted with 2 bits in the signal area, and the remaining time information of the lit signal light is 8 bits in the time area. Decrypt and analyze the encrypted crosswalk signal, so it is checked. The remaining bits (BIT) are not used.

Hereinafter, with reference to FIG. 5, the crossing unit 200 for displaying a visually impaired crossing signal will be described.

By generating and outputting a crosswalk or crosswalk signal limiting the passage of traffic, the traffic lights provided in the traffic light section 220, that is, a flashing light indicating the crossing signal for passing and the waiting signal for passing restriction, respectively A state control signal; A crossing signal generator 210 for outputting a crossing signal including residual lighting time information of a signal lamp turned on by the blinking state control signal;

A traffic light unit 220 for outputting a visual signal for limiting the crossing of the crossing by the crossing signal inputted from the crossing signal generating unit 210;

Encrypting the crossing signal inputted from the crossing signal generator 210, analyzing the incoming crossing signal and encrypting the signal for controlling the blinking state of the traffic light and recording the signal in the signal area; Since the remaining lighting time information of the lit signal lamp is encrypted and recorded in the time domain, a total of 16 bits of encrypted crossing signal are allocated to the signal region, 2 bits are allocated, 8 bits are allocated to the time region, and the remaining bits are not used. And the encryption unit 230 for outputting,                     

A modulator 240 for modulating the signal applied from the encryption unit 230 so that the mobile terminal 100 analyzes the signal;

The crossing unit 200 includes a high frequency unit 250 which up-converts the signal applied from the modulator 240 to a corresponding high frequency (RF) signal so as to wirelessly receive the portable terminal 100. Configure.

Hereinafter, according to the present invention having the configuration described above, a crosswalk unit 200 for displaying a visually impaired crosswalk signal will be described in detail with reference to the accompanying drawings.

The crosswalk 200 is fixed to both sides of the crosswalk or crosswalk 45, as shown in FIG. 3, respectively, and the control area 205 having a strong intensity of the crosswalk signal transmitted from the high frequency unit 250. ), The control area 205 may be part of both sides of the crossing 45 or the entire area of the crossing 45.

The crosswalk signal generator 210 constituting the crosswalk 200 may allow a pedestrian to cross at a crosswalk or crosswalk 45 or wait by a corresponding control signal applied from a corresponding central control station or a central traffic control station. It outputs a signal for controlling the traffic light unit 220 for visually displaying a signal to be displayed, and at the same time outputs time information for checking the remaining lighting time of the lit signal.

The crosswalk signal output from the crosswalk signal generator 210 as described above is output to the signal light unit 220 and to the encryption unit 230, and the signal light unit 220 is the crosswalk signal generator 210. A visual display of the crossing signal applied from the), and the encryption unit 230 is encrypted and output.                     

The crossing signal encrypted by the encryption unit 230 is made of 16 bits (BIT), as described above and shown in the accompanying Figure 6, the signal light flashing state by assigning 2 bits (BIT) to the signal area Is displayed by encrypting and displays the remaining lighting time information of the lit signal lamp by allocating 8 bits to the time domain.

The crossing signal encrypted by the encryption unit 230 as described above is applied to the modulation unit 240 to operate in the mobile communication system and demodulated in the mobile terminal 100, for example, code division Modulates the signal to a multiple access (CDMA) signal and outputs it to the high frequency unit 250. The high frequency unit 250 converts the input signal into a corresponding high frequency signal received by a mobile communication system and through an antenna ANTENNA. Wireless transmission to the control area 205.

Therefore, the visually impaired crossing signal portable terminal according to the present invention having the above-described configuration selects (OPTION) the signal currently being lit and the remaining lighting time information from the crossing signal 45 from the visual signal, the audio signal, and the braille signal. .

Hereinafter, with reference to FIG. 7, the present invention will be described a method for displaying a crossing signal for a visually impaired person at the crossing 200.

The crosswalk 200 is a preparation process (S100) for determining whether to operate a crosswalk signal to limit the passage of crosswalks or crosswalks 45,

In the case of operating the crosswalk signal in the crosswalk unit 200 as determined in the preparation process (S100), by detecting the flashing state signal of the traffic light and encrypting the remaining crossover time of the lit traffic light by encrypting the crosswalk signal, The encryption unit 230 detects and encrypts the traffic light blinking state signal from the crosswalk signal output from the crosswalk signal generator 210, and records the signal as 2 bits in the signal area of the encrypted crosswalk signal (S110). ; The encryption unit 230 detects the remaining lighting time of the signal turned on from the crosswalk signal output from the crosswalk signal generator 210, encrypts it, and records 8 bits (BIT) in the time domain of the encrypted crosswalk signal. Signal process consisting of (S120),

The encrypted crosswalk signal in the signal process, among the total 16 bits, allocates 2 bits to the signal area, 8 bits to the time domain, and does not use the remaining bits, the crosswalk signal encrypted as described above By way of example, for example, modulation by code division multiple access (CDMA), up-conversion to a radio frequency (RF) signal, wirelessly output via an antenna ANTENNA, and determining whether to continue (S140). If feedback (FEEDBACK) does not continue to the process (S100) is made to the output process proceeds to the end.

Hereinafter, according to the present invention having the above-described configuration, it will be described in detail with reference to the accompanying drawings, a method for displaying a crosswalk signal for the visually impaired crossing section 200.

The crossing 200 is fixed to both sides of the crosswalk or crossing 45, it is determined whether to operate the crossing signal (S100), when operating the crossing signal, the crossing signal generator 210 The generated traffic light blinking state signal is encrypted by 2 bits (BIT) by the encryption unit 230, and is recorded in the signal area as shown in FIG. The information on the remaining time of lighting the lit signal is detected by the encryption unit 230, inputted, encrypted by 8 bits, and recorded in the time domain as shown in FIG. 6 (S120).

The crossing signal encrypted by the encryption unit 230 as described above is applied to the modulator 240, modulated by a mobile communication method, and applied to the high frequency unit 250 to be used in mobile communication. Up-modulated to the wireless output through the antenna (S140), and determines whether to continue (S140) to continue if the feedback (FEEDBACK) to the preparation process (S100) and ends if not continue.

Hereinafter, referring to FIG. 8, the present invention will be described a method for displaying a crosswalk signal for visually impaired users.

The mobile terminal 100 for mobile communication is located on both sides of the railroad crossing 45, is located in the control area 205 formed by the railroad crossing 200, and simultaneously receives the railroad crossing signal from the railroad crossing 200. In this case, by separating and detecting the signal area, determining whether the encrypted crosswalk signal is received from the crosswalk unit 200 by the control unit 120 of the portable terminal 100 (S200); When receiving the encrypted crossing signal in the step (S200), the first step consisting of the step (S210) of separating and detecting the signal area (a1, a2) by the crossing signal processor 130,

In the case of the crossing where the signal state can cross the crosswalk by analyzing the signal regions a1 and a2 detected in the starting process, the crossing indication signal is output, and in the case of the atmosphere where the analyzed signal state cannot cross the crosswalk. Outputting a wait indication signal, and determining whether the display state of the crossing signal is crossing or waiting by analyzing the signal regions a1 and a2 detected by the crossing signal processing unit at the crossing signal processing unit 130 (S220); If it is determined in step S220 that the signal state is crossing, outputting an indication signal of a crossing indication crossing the crossing to the controller 120 (S230); In the process (S220), if the signal state is the standby can not cross the crossing, the instruction process comprising the step (S240) of outputting the indication signal of the wait display to the control unit 120,

Time zones a4 to a11 are separately detected from the crosswalk signal of the process, and the remaining time is analyzed and output in a manner set together with the indication signal. The time zone is converted from the crosswalk signal encrypted by the crosswalk signal processor 130. Separating and detecting the process (S250); Decoding and analyzing the time domains (a4 to a11) detected in the process (S250) to check the remaining lighting time information of the currently lit signal and outputting it to the controller (S260); The control unit 120 is configured to output the input signal and the remaining time information to the corresponding functional unit to output a crosswalk signal in a set manner (S270).

In the set method of displaying the crossing signal, the control unit 120 of the mobile terminal 100 visually displays the crossing signal using the visual display unit 140, and uses the audio unit 150 to generate the crossing signal. In addition, the crossing signal is displayed in Braille by using the braille unit 160, and all or part of the above display method is selected, and the braille unit 160 is partially protruded to display or partially display the signal. Select the method of generating heat to display the signal.

Hereinafter, a method for displaying a visually impaired crosswalk signal of a mobile terminal of the present invention will be described in detail with reference to the accompanying drawings.                     

The control unit 120 of the portable terminal 100 analyzes the signal received through the high frequency unit 110 to determine whether a crosswalk signal transmitted from the crosswalk unit 200 is received and detected (S200). When the encrypted crosswalk signal is received at S200, the received crosswalk signal is output to the crosswalk signal processor 130, and the crosswalk signal processor 130 separately detects the signal areas a1 and a2 (S210). In step S220, it is determined whether the state of the crossing signal is a crossing state or a non-crossing standby state by decrypting the encrypted signal of the separated detected signal region.

The crossing signal processing unit 130 determines (S220), and outputs a signal indicating the crossing to the control unit 120 in the case of the crossing state that can be crossed (S230), and displays the standby in the case of the standby state that can not cross The signal is output to the control unit 120 (S240).

In addition, the cross signal processing unit 130 separates and detects the time domains a4 to a11 from the encrypted crossing signal (S250), decrypts the detected time domain signal (DECODING), and currently turns on the signal. The remaining lighting time of the analysis is analyzed (S260) and applied to the controller 120.

The control unit 120 displays the input remaining lighting time information and the flashing signal state by the OPTION, the visual display unit 140 for displaying the visual, the voice unit 150 for displaying the voice signal, and the braille signal. Output to the braille unit 160 to display a crossing signal.

Therefore, the present invention as described above, the visually impaired person using the mobile terminal 100, while confirming the state of the light signal of the crosswalk 45 is currently lit by braille or voice at the same time checking the remaining light time information of the lit signal As you decide whether you can cross now or wait for the next signal, cross the railroad crossing safely.

As described above, the visually impaired person accurately checks the crossing signal system with a voice signal and a braille signal using a mobile terminal for mobile communication, and thus has an effect of improving social welfare safely crossing the crossing.

In addition, a visually impaired person crosses a railroad crossing safely using an additional function of a mobile terminal, and has a convenient effect in improving the utilization of the mobile terminal.

Claims (19)

A high frequency unit for receiving a radio signal from a railroad crossing and down-converting the signal as a baseband signal; A control unit for separating and detecting a crossing signal by analyzing a baseband signal applied from the high frequency unit, and controlling and monitoring each functional unit; A crossing signal processing unit for inputting a crossing signal from the control unit and analyzing and outputting a blinking state and remaining time information of a traffic light; A time display unit for visually processing the control signal and the crossing state information applied from the controller; A voice unit for processing the control signal and crossing state information applied from the controller and outputting the voice signal; A visually impaired crosswalk signal portable terminal display device comprising a braille unit for processing a control signal and crosswalk state information applied from the controller and outputting the signal as a braille signal. The method of claim 1, wherein the control unit, Detects a crosswalk signal from the baseband signal input from the high frequency unit and outputs the crosswalk signal to the crosswalk signal processor, A display device for visually impaired crosswalk signal handsets, comprising: displaying crosswalk state information input from the crosswalk signal processor, and outputting the crosswalk state information to the time display unit, the audio unit, and the braille unit, respectively, to display the time signal, the audio signal, and the braille signal, respectively. The method of claim 1, wherein the cross signal processing unit, And inputting a crossing signal applied from the control unit, detecting and analyzing a blinking state of a traffic light and a remaining time of a lit signal, and outputting the crossing crossing signal to the controller as crossing state information. According to claim 1, The time display unit displays a control signal input from the control unit and the crossing state information to visually confirm, The voice unit processes the control signal and the crossing state information input from the control unit and outputs it to confirm as a voice signal, And the braille unit is configured to process the control signal and the crossing state information inputted from the control unit and output the processed braille signal to confirm it as a braille signal. The method of claim 1, wherein the mobile terminal, A visually impaired crossing signal portable terminal display device comprising a control unit and a function unit for mobile communication. A crossing signal generator for generating and outputting a crossing signal for limiting crossing traffic; A signal lamp unit for outputting a visual signal for limiting crossing traffic by a crossing signal inputted from the crossing signal generator; An encryption unit for encrypting the crossing signal inputted from the crossing signal generation unit; A modulator for modulating the signal applied from the encryption unit to be analyzed by the mobile terminal; And a high-frequency unit configured to up-convert and output a signal applied from the modulator to receive the portable terminal. The apparatus of claim 6, wherein the cross signal generator comprises: A signal for controlling a blinking state of a traffic allowance and a traffic restriction display signal provided in the traffic light unit; A visually impaired crosswalk signal portable terminal display device, characterized in that it is configured to output a crosswalk signal comprising residual lighting time information of a signal lamp lit by the control signal. The method of claim 6, wherein the encryption unit, Analyzing the crossing signal signal inputted from the crossing signal generator, the signal controlling the blinking state of the traffic light is encrypted and recorded in the signal area, Residual lighting time information of the lit signal light is encrypted and recorded in the time domain to output an encrypted crosswalk signal characterized in that the display device for a visually impaired crosswalk signal. The method of claim 8, wherein the encrypted crosswalk signal, And 2 bits allocated to the signal region, 8 bits allocated to the time region, and 16 bits not used. When the mobile terminal receives the crossing signal from the crossing section, the mobile terminal separates and detects the signal area; An instruction process of analyzing the signal region detected in the above process and outputting a crossing instruction signal when the signal state is crossing, and outputting a standby instruction signal when the analyzed signal state is standby; A visually impaired crosswalk signal display terminal is characterized in that the time signal is separated from the crosswalk signal of the process and the remaining time is analyzed to output the output signal in a manner set with the indication signal. Way. The method of claim 10, wherein the starting process, Determining whether an encrypted crossing signal is received from the crossing unit by the controller of the portable terminal; And receiving the encrypted crosswalk signal, wherein the signal area is separated and detected by the crosswalk signal processor of the portable terminal. The method of claim 10, wherein the instruction process, Analyzing the signal area detected from the crossing signal by the crossing signal processor of the portable terminal to determine whether the display state of the crossing signal is crossing or waiting; Outputting an indication signal of a crossing display to a control unit of the portable terminal when the display state is crossing; And if the display state is standby, outputting an indication signal of the standby display to a control unit of the portable terminal. The method of claim 10, wherein the time course, Separating and detecting a time domain from the crossing signal encrypted by the crossing signal processor of the portable terminal; Decoding and analyzing the detected time domain to confirm remaining lighting time information of the currently lit signal and outputting the same to the controller of the portable terminal; And a control unit of the portable terminal outputs the input indication signal and the remaining time information to a corresponding function unit to display the crossing signal in a set manner. The method of claim 13, wherein the set method of displaying the crossing signal is as follows. The control unit visually displaying the crossing signal using the visual display unit of the portable terminal, displaying the crossing signal using the audio unit of the portable terminal as a voice signal, and using the braille unit of the portable terminal to cross the crossing signal A visually impaired crosswalk signal portable terminal display method, characterized in that it is at least one of the display method. The method of claim 14, wherein the braille portion, A visually impaired crosswalk signal portable terminal displaying method for outputting a crosswalk signal as a braille signal, using partial protrusion or partial heat generation. The railroad crossing preparatory process for judging whether or not to operate a crosswalk signal that restricts passage of the crosswalk; A signal process of detecting and encrypting a blinking state signal of a traffic light and encrypting a crossing signal by detecting a remaining lighting time of a lit traffic light when the crossing signal is operated; When the encrypted crosswalk signal is modulated by a mobile communication method and outputted as a high frequency signal, the signal is returned to the preparation process when the signal is continued and the output signal proceeds to the end when the signal is not continued. Method for displaying a visually impaired crossing signal handheld terminal. The method of claim 16, wherein the signal process, Encrypting and detecting a signal flickering state signal from a crosswalk signal output from the crosswalk signal generator, and recording the signal in a signal area of an encrypted crosswalk signal; The visually impaired crossing signal portable terminal display comprises a process of detecting the remaining lighting time of the signal on which the encryption unit is lit from the crossing signal output from the crossing signal generator, encrypting it, and recording it in the time domain of the encrypted crossing signal. Way. The method of claim 17, wherein the encrypted crosswalk signal, And 2 bits are allocated to the signal region, 8 bits are allocated to the time region, and 16 bits are not used for the remaining bits. The method of claim 16, wherein the output process, And displaying the crossing signal output at the high frequency so as to be received only in the vicinity of the crossing.

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