KR20030062065A - Method and System for Locating a Lost Article - Google Patents

Abstract

The present invention relates to a method and a system for finding a lost object by receiving a specific signal from a transmitter attached to the lost object and a receiver attached to the lost object to operate an alarm sound or an alarm.

In the system for a user having a transmitter and a receiver to find a lost object, a transmitter for the user to select the lost object, a wireless base station for receiving a signal from the transmitter or generating and transmitting a signal having a frequency of a specific band, a wireless base station and a wired Connected to the mobile communication exchange station, which handles the connection request of the wireless communication terminal, and is wired to the mobile communication exchange station, and receives signals from the mobile communication service provider server and the wireless base station that provide services for finding lost items. It provides a lost and found detection system comprising a receiver attached to the lost and activated alarm lights.

According to the present invention, a user can easily find a lost item by using a mobile phone or a landline phone.

Description

Lost and Found Method and System {Method and System for Locating a Lost Article}

The present invention relates to a lost object detection method and system. More specifically, a user accesses a mobile operator server using a transmitter to select a lost object, and a receiver attached to the lost object receives a specific signal transmitted from the mobile operator server through a wireless base station, and generates an alarm sound or alarm. The present invention relates to a method and a system for finding lost items by operating the system.

Modern people often suffer from constant stress and tension in a complex social environment, and forgetfulness often forgets the little things around life. Appearing. For example, cases of forgetfulness, such as finding a wireless phone or cell phone in a refrigerator or having a TV remote control, and searching the entire house, are increasing.

Moreover, with the recent development of electrical and electronic engineering technology, electronic products are becoming smaller and smaller. That is, expensive electronic products, which have been difficult to carry by people because they occupy a large volume or weight, can be easily carried. However, as the amount of goods that an individual can carry increases, more and more items are lost or forgotten where they are placed.

Meanwhile, various products have been developed to prevent the loss of portable products as the risk of loss of portable products increases due to the increase in forgetfulness or the miniaturization of various products. Such an anti-lost product includes a transmitter and a receiver. A user carries a receiver and includes a transmitter in a portable device, and the receiver transmits an alarm frequency signal transmitted from the transmitter when the distance between the transmitter and the receiver is greater than or equal to a predetermined distance. In addition, it has a system that enables the user to recognize it.

The conventional anti-lost device includes a frequency signal oscillation device in a transmitter, and the receiver receives a frequency transmitted from the transmitter, and measures a reception sensitivity to determine a separation state between the transmitter and the receiver according to the measurement amount. Therefore, when the separation distance between the receiver and the transmitter is greater than or equal to a predetermined distance, that is, when the reception sensitivity of the receiver is less than or equal to a preset reference value, an alarm sound or an alarm is activated in the alarm device built in the receiver.

However, since the conventional anti-lost device uses low frequency such as medium frequency or short wave, if there is an obstacle that obstructs the movement of radio waves between the transmitter and the receiver, the strength of the signal received by the receiver falls below the reference value and immediately generates an alarm sound or There was a problem that frequently occurs a malfunction that the alarm light operates.

In addition, the conventional anti-lost device manufactures a transmitter and a receiver separately, and the user has to purchase both the transmitter and the receiver, and because the transmitter must always carry the transmitter, there is a problem that the user has to carry more articles.

In addition, since the transmitter and the receiver always correspond 1: 1, there is a great difficulty in applying to various personal portables. That is, different transmitters, such as wallets, cassette players, bags, and the like, must be attached to different transmitters, and the user also has to carry a receiver corresponding to each transmitter.

Moreover, since the alarm sounds from each receiver that the user carries are almost the same, it is difficult for the user to identify which receiver is at risk of losing because the user has to sift through which receiver the alarm sounds. Even if the alarm sounds sent out from each receiver are different, the user has to memorize items of the portable items corresponding to the different alarm sounds to immediately find out which portable equipment is at risk of loss or theft.

In order to solve the above problems, the present invention, a user is connected to a mobile operator server using a transmitter to select a lost object, and a receiver having a specific signal transmitted from the mobile operator server through a wireless base station is attached to the lost object. The purpose of the present invention is to present a lost object detection method and system by receiving and operating an alarm sound or alarm.

1 is a schematic block diagram of a lost property detection system according to the present invention;

Figure 2 is a perspective view showing the appearance of the receiver according to an embodiment of the present invention,

3 is a block diagram schematically showing an internal configuration of a receiver according to an embodiment of the present invention;

4 is a perspective view showing the appearance of a receiver according to another embodiment of the present invention;

5 is a block diagram schematically showing an internal configuration of a receiver according to another embodiment of the present invention;

6 is an exemplary view showing a screen of a "lost lost article" service using a wireless communication terminal,

7 is a flowchart showing a lost property detection process according to an embodiment of the present invention;

8 is a flowchart showing a lost property detection process according to another embodiment of the present invention;

9 is a flow chart showing a lost property detection process according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: wireless communication terminal 102: wired communication terminal

104: wireless base station 108: mobile operator server

112 receiver 202 display unit

300, 500: control unit 302, 502: RF receiving module unit

304: frequency filter unit 305: switching unit

306, 504: demodulation unit 308: key input unit

310: display unit 312, 508: power supply unit

313, 510: mode setting unit 314, 512: sound unit

316, 514: lamp unit 402: portable display unit

506: unique number storage unit

To this end, the present invention is a system for detecting a lost object by a user having a transmitter and a receiver using a communication network, a transmitter for the user to select the lost object, receiving a signal from the transmitter or generating a signal having a frequency of a specific band A wireless base station connected to a wireless base station, a mobile communication exchange station connected to a wireless base station to process a connection request of a wireless communication terminal, a mobile communication server connected to a mobile communication exchange station, and providing a service for finding lost items and a signal transmitted from a wireless base station It provides a lost object detection system comprising a receiver attached to the lost and received alarm sound or alarm is activated.

According to another object of the present invention, in a method for detecting a lost object by a user having a transmitter and a receiver using a communication network, connecting to a mobile carrier server using the transmitter, finding a lost portable device provided by the mobile operator server Selecting a lost item using a service, the mobile service provider server transmitting a signal indicating the lost item selected by the user to the wireless base station, and the wireless base station transmitting a signal having a specific frequency in response to the signal received from the mobile service provider server. Transmitting, the receiver receiving a signal transmitted from the wireless base station, determining whether the signal is a signal for operating itself in an alarm mode, and the receiver operating in an alarm mode according to the received signal. Provides lost and found detection methods .

According to still another object of the present invention, in a method for detecting a lost object by a user having a wired communication terminal and a receiver using a communication network, accessing a public switched telephone network by inputting a specific number using a wired communication terminal, Inputting a unique number of the receiver attached to the lost item using a lost baggage search service provided by a telephone exchange network, wherein the public switched telephone network transmits a signal indicating the unique number to a wireless base station via a mobile communication switching center; Receiving a wireless base station transmits a signal, the receiver receives a signal transmitted from the wireless base station to determine whether it matches the unique number stored in the receiver and the receiver operates in an alarm mode according to the received signal Lost and Found room which comprises the steps of It provides.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a schematic block diagram of a system for finding lost items in accordance with the present invention.

1, the wireless communication terminal 100 and the wired communication terminal 102 is a device that functions as a transmitter according to the present invention, for example, the wireless communication terminal 100 is a mobile phone or personal digital assistant (PDA) The wired communication terminal 102 includes a landline telephone or a wired / wireless combined telephone mainly used in homes. The wireless communication terminal 100 and the wired communication terminal 102 function to send a signal of a specific frequency to the receiver 112 mounted on the lost object. An internal configuration of the wireless communication terminal 100 will be described in detail with reference to FIG. 2.

The wireless base station 104 refers to a base station having a wireless transceiver for receiving and transmitting a signal transmitted by the wireless communication terminal 100 and the wired communication terminal 102. According to an embodiment of the present invention, the signal transmitted from the wireless base station 104 uses a frequency of 1.7 GHz to 1.8 GHz band used in a general mobile communication system. Therefore, the wired communication terminal 102 using a frequency belonging to the 900 MHz frequency band should convert the frequency to a frequency of 1.7 GHz to 1.8 GHz band. This frequency conversion task is handled by the wireless base station 104.

The mobile communication switching center 106 has a control function that enables the wireless base stations 104 to operate efficiently and an interworking function with the switch of the public switched telephone network 110.

The mobile operator server 108 serves to provide a service for finding lost items of a network user. That is, the user of the communication network may use the "lost lost goods" additional service provided by the mobile communication service provider server 108 using the wireless communication terminal 100 or the wired communication terminal 102. This will be described in more detail with reference to FIG. 4.

The receiver 112 is mounted on various portable devices of a user, and receives a specific frequency transmitted from the wireless base station 104 to operate an alarm device provided in the receiver 112 to output an alarm sound or to flash an alarm light. do.

2 is a perspective view showing the appearance of the receiver 112 according to an embodiment of the present invention.

2, the appearance of the receiver 112 includes a speaker 200, a display unit 202, a search key 206, an alarm mode setting key 207, a power key 208, and a light emitting diode (LED) ( 210).

The display unit 202 shows a list of portable items to which the receiver 112 is attached. That is, the display unit 202 displays a list of portable items that people generally carry, such as a wallet, a mobile phone, a bag, a key ring, and the like, which are preset at the manufacturing stage of the receiver 112. In general, since the receiver 112 is attached or connected to a small volume or size of a portable device, the smaller the volume or the size, the better. Therefore, in the exemplary diagram of FIG. 2, for convenience of explanation, the list of four portable items is displayed on the display unit 202, but the size of the receiver 112 can be made as small as possible by displaying only one list of portable items. It would be desirable to do so.

The user selects a desired portable device and sets the receiver 112 by searching a list of the portable devices displayed on the display unit 202 using the search key 206 of the receiver 112. Here, setting the receiver 112 means adjusting the receiver 112 so that the receiver 112 can receive only a frequency corresponding to the list of the respective portable items displayed on the display unit 202. 3 will be described in more detail.

The alarm mode setting key 207 functions to set whether the receiver 112 emits an alarm sound or flashes an alarm light in the alarm mode. Here, the alarm mode refers to a mode in which an alarm sound or an alarm mounted on the receiver 112 is operated by using the wireless communication terminal 100 or the wired communication terminal 102 when the user loses a portable item. On the contrary, the normal mode means a state in which the alarm sound or the alarm mounted on the receiver 112 does not operate.

The power key 208 is a key that functions to turn on / off the operation of the receiver 112. When the user keeps the portable item in a safe place, the power key 208 turns off the power of the receiver 112 using the power key 208. You can. The reason why the power key 208 is mounted is that it may be advantageous to turn off the power to extend the life of the battery 112 of the receiver 112 when there is no possibility of losing the portable or forgetting the location.

The speaker 200 and the LED 210 operate when the receiver 112 receives a signal transmitted from the wireless communication terminal 100 and the wired communication terminal 102 to generate an alarm sound according to the setting of the alarm mode setting key 207. Or LED 210 blinks periodically.

Meanwhile, the receiver 112 illustrated in FIG. 2 is an adhesive type that attaches the adhesive tape 212 to the bottom of the receiver 112 so that the receiver 112 can be easily attached and connected to a portable product. Magnets attaching the back and grooves 214 are formed on one side of both side portions of the receiver 112, so that the connecting ring 216 such as a string or a metal can be manufactured into a ring or the like for connecting the grooves 214.

3 is a block diagram schematically illustrating an internal configuration of a receiver 112 according to an embodiment of the present invention.

Referring to FIG. 2 and FIG. 3 together, the controller 200 controls the overall operation of the receiver 112 such as controlling the receiver 112 to correspond to a signal received by the receiver 112.

The RF (Radio Frequency) receiving module unit 302 functions to receive a high frequency signal through the antenna ANT. In general, the RF receiving module unit 302 is configured as a band pass filter (BPF) capable of selectively receiving only a signal having a frequency belonging to a specific frequency band.

The frequency filter unit 304 is composed of a plurality of band pass filters, and functions to selectively pass only a signal having a frequency belonging to a frequency band of each band pass filter. Here, the number of band pass filters should be equal to or greater than the number of portable devices provided by a mobile communication service provider that provides a service for finding a lost portable device.

The switching unit 305 functions to transmit only a signal passing through a specific band pass filter corresponding to data input from the key input unit 308 to be described later to the demodulator 306 to be described later. Therefore, the receiver 112 responds only when the signal received through the RF receiving module unit 302 is a signal having a frequency band of a specific band pass filter set through the key input unit 308. For example, when the user checks the display unit 202 and sets the receiver 112 for a mobile phone, the corresponding data is transmitted to the control unit 300 through the key input unit 308. The control unit 300 interprets the data transmitted from the key input unit 308 and uses a switching unit 305 to use a band pass filter corresponding to a mobile phone among the band pass filters of the frequency filter 304, for example, BPF. Connect only [2] with yourself. Therefore, the received signal is transferred to the controller 300 only when the frequency of the signal received by the RF receiving module unit 302 is included in 1.7020 to 1.7029 GHz, which is the frequency band of the BPF [2], so that the receiver 112 operates. do.

However, when the signal received by the RF receiving module unit 302 is not included in 1.7020 to 1.7029 GHz, the received signal is not transmitted to the controller 300 and the receiver 112 does not operate.

In the exemplary embodiment of the present invention, the frequency band used to find a lost portable device has been described using 1.7010 to 1.7099 GHz as an example. However, the frequency band may be changed depending on a mobile communication provider that provides a search service for a lost portable device through a communication terminal. Could be.

The demodulator 306 functions to separate the original signal before being modulated from the modulated signal passed through the frequency filter unit 304 and transmit the original signal to the controller 300.

The key input unit 308 transmits the data input by the user using the setting key 204 and the search key 206 to the control unit 300.

The display unit 310 displays a list of portable items stored in the receiver 112 in advance through the display unit 202 illustrated in FIG. 2.

The power supply unit 312 functions to supply power to the receiver 112, and in the embodiment of the present invention, the battery used in the power supply unit 312 also has a large volume and size due to the structural characteristics of the receiver 112 having a small volume and size. It is preferable to use a small compact mercury battery or the like.

The mode setting unit 313 transmits data input by the user through the alarm mode setting key 207 to the control unit 300 so that the control unit 300 transmits an alarm sound when the receiver 112 operates in the alarm mode. This function is to set whether to turn on or flash the alarm.

The sound unit 314 and the lamp unit 316 operate when the receiver 112 receives a signal having a frequency belonging to a set frequency band to transmit an alarm sound through the speaker 200 or to display an LED ( Flashes 210).

4 is a perspective view showing the appearance of the receiver 112 according to another embodiment of the present invention.

Referring to FIG. 4, the receiver 112 includes a speaker 400, a portable display unit 402, a power supply unit 404, an LED 406, and an alarm mode setting key 408.

The speaker 400, the power supply unit 404, the LED 406, and the alarm mode setting key 408 have the same function as described in FIG. 2.

The portable display unit 402 displays the name of the portable device to which the receiver 112 is to be attached. The portable display unit 402 displays the name of the portable device at the manufacturing stage of the receiver 112. Therefore, the user preferably attaches the receiver 112 shown in FIG. 4 to a purse which is a portable article displayed on the portable display unit 402. As shown in FIG. 4, if a portable device to be used for each receiver 112 is designated at the manufacturing stage of the receiver 112, the receiver 112 may be manufactured for each portable device that people frequently carry.

Here, when comparing the receiver 112 shown in FIG. 2 and the receiver 112 shown in FIG. 4, the receiver 112 shown in FIG. 2 operates one receiver 112 irrespective of the item of a portable item. There is an advantage that can be used, but the configuration of the receiver 112 is somewhat complicated and there is a disadvantage that the manufacturing cost increases. On the other hand, the receiver 112 shown in FIG. 4 has a hassle to manufacture a receiver having a unique number that is different for each item of a portable item, but the configuration of the receiver 112 is simplified and the manufacturing cost is lowered. .

Meanwhile, the receiver 112 shown in FIG. 4 may also be manufactured in an adhesive type, a magnet type, and a ring type to facilitate attachment and connection to a portable product, similar to the receiver 112 shown in FIG. 2. The principle of operation of the receiver 112 shown in FIG. 4 is described in more detail in FIG. 5.

5 is a block diagram schematically showing an internal configuration of a receiver 112 according to another embodiment of the present invention.

Referring to FIG. 5, the control unit 500, the RF receiving module unit 502, the power supply unit 508, the mode setting unit 510, the sound unit 512, and the lamp unit 514 have the same functions as described with reference to FIG. 3. do.

The demodulator 504 receives the modulated signal received by the RF receiving module 502 and demodulates the modulated signal to separate the original signal. Here, the original signal includes a unique number, but the demodulator 504 transmits the unique number to the unique number storage unit 506, and transmits the remaining signals except the unique number to the controller 500.

Here, the unique number is a code stored in the unique number storage unit 506, and one unique number is set for each receiver 112 in the manufacturing stage of the receiver 112 shown in FIG. . Typically, a unique number is created from a series of numbers or letters.

Here, one unique number is assigned to each item of the portable goods, and the assigned unique number is stored in the unique number storage unit 506 of the receiver 112. Thus, the receivers 112 used in the same portable product, for example, the receivers 112 used in an item called a bag, all have the same unique number. In addition, the receivers 112 used for other portable products have different unique numbers. That is, the receiver 112 used for the bag and the receiver 112 used for the mobile phone are different in their unique numbers.

As described above, the unique number storage unit 506 stores the unique number assigned to each item of the portable goods, and compares the unique number transmitted from the demodulator 504 with the stored unique number and transmits the comparison result to the controller 500. do. Therefore, the control unit 500 determines the comparison result transmitted from the unique number storage unit 506 to switch the receiver 112 to the alarm mode if the unique numbers match, otherwise does not switch to the alarm mode.

6 is an exemplary view showing a screen of a "lost lost article finder" service using the wireless communication terminal 100 according to an embodiment of the present invention.

When the user accesses the mobile communication provider server 110 using the wireless communication terminal 100 and selects, for example, a "lost lost goods finder" service provided by the mobile communication provider, the screen of the wireless communication terminal 100 is shown in FIG. A list of items is displayed. A user selects a lost item by operating a key button of the wireless communication terminal 100.

In the embodiment of the present invention, the signal transmitted from the wireless communication terminal 100 to the receiver 112 may be generated in two kinds.

First, as described with reference to FIGS. 2 and 3, a signal may be generated by allocating a specific frequency to each portable device on the “lost lost device” screen. Referring to FIG. 1 and FIG. 4 together, a signal corresponding to a wallet is generated to have a frequency belonging to 1.7010 to 1.7019 GHz, which is a frequency band of BPF [1], and a signal corresponding to a mobile phone is a frequency band of BPF [2]. It is generated to have a frequency belonging to 1.7020 ~ 1.7029 GHz.

That is, when the user selects the wallet using the wireless communication terminal 100, the mobile operator server 108 may have a frequency of 1.7010 to 1.7019 GHz corresponding to the wallet of the specific wireless base station 104 to which the wireless communication terminal 100 belongs. It is required to transmit a signal having a frequency belonging to the band. The wireless base station 104 transmits a signal having a frequency belonging to a frequency band of 1.7010 to 1.7019 GHz, and only the receiver 112 whose display unit 202 is set as a wallet receives the signal to operate in an alarm mode. .

In the above, the use frequency according to the present invention has been described as an example of 1.7010 to 1.7099 GHz. However, if this frequency band overlaps with a communication frequency band in use, there is a risk of confusion in communication. It can be moved appropriately to achieve this, and the frequency bandwidth of each band (Band) can also be adjusted.

Second, as described above with reference to FIGS. 4 and 5, a signal may be generated by assigning a unique number to each of the portable items of the “Locating lost portable goods” service screen. Referring to FIGS. 1 and 5, when the user selects a wallet using the wireless communication terminal 100, the mobile service provider server 108 may identify a unique number assigned to an item called a wallet. It transmits to the wireless base station 104 to which it belongs. The wireless base station 104 receives the unique number from the mobile communication service provider server 108 and sends the unique number to the signal transmitted. Therefore, all receivers 112 attached to different portable devices receive a signal and compare the unique numbers so that the receiver 112 operates in the alarm mode only when it matches the unique number stored therein.

On the other hand, when the user uses the "lost lost goods" service provided by the mobile operator using the wired communication terminal 102, first, the user uses the wired communication terminal 102 to the mobile service provider server 108 Connect. Thereafter, the lost mobile device may be selected according to an announcement provided by the mobile service provider server 108. For example, the announcement is a "logging baggage retrieval service." "Press 1 if your wallet is lost, 2 for your phone or 3 for your bag." Or the like. If the user wants to find a lost wallet, the user hears the announcement and presses the number 1 key of the wired communication terminal 102.

7 is a flowchart illustrating a process of finding lost items according to an embodiment of the present invention.

The user connects to a mobile communication service provider server 108 that provides a lost portable device search service using a transmitter such as a wireless communication terminal 100 or a wired communication terminal 102 (S700). Here, the connection to the mobile communication service provider server 108 using the wireless communication terminal 100 may be performed using a shortcut provided by the wireless communication terminal 100 itself, and the mobile communication service provider via the wired communication terminal 102. The connection to the server 108 can be performed by pressing a specific phone number that can connect to the mobile operator server 108.

The user selects a lost baggage search service through the transmitter (S702). Then, the user selects a portable item he or she wants to find (S704). In this case, when the user uses the wireless communication terminal 100, the lost item is selected by using the screen and key buttons of the wireless communication terminal 100, and when the user uses the wired communication terminal 102, the user uses the mobile communication service provider server ( Listen to the announcement provided by 108) by pressing the key button corresponding to the lost and found.

The mobile telecommunication operator server 108 requests the wireless base station 104 to which the transmitter belongs to transmit a signal having a frequency belonging to a frequency band allocated to the portable device selected by the user (S706). The wireless base station 104 receiving the request of the mobile communication service provider server 108 transmits a signal having a frequency belonging to a frequency band allocated to the portable device selected by the user (S708). The receiver 112 receives a signal transmitted from the wireless base station 104 (S710), and the received signal sets a specific band pass set by a user among a plurality of band pass filters constituting its frequency filter unit 304. It is determined whether the filter passes (S712). If the received signal does not pass the specific band pass filter set by the user, the receiver 112 maintains the normal mode as it is (S714). Otherwise, if the received signal passes the specific band pass filter set by the user, the receiver 112 changes from the normal mode to the alarm mode and operates (S716).

8 is a flowchart illustrating a process of finding lost and found items according to another embodiment of the present invention.

Referring to FIG. 8, detailed descriptions of steps S800 to S804 are the same as those of FIG. 7.

The mobile telecommunication operator server 108 transmits the unique number assigned to the portable device selected by the user in step S804 to the specific wireless base station 104 to which the transmitter belongs (S806). The wireless base station 104 transmits a signal including a unique number received from the mobile communication service provider server 108 (S808). The receiver 112 receives the signal transmitted by the wireless base station 104 (S810), and determines whether the unique number included in the received signal matches the unique number stored in the unique number storage unit 506. (S812). If the unique numbers do not match, the receiver 112 continues the normal mode (S814), and if the unique numbers match, the receiver 112 switches to the alarm mode from the normal mode and operates (S816).

In the above, the user using the mobile service provider server 108 has described a lost item, but it is also possible to find the lost item using the wired communication terminal 102 relatively simply without passing through the mobile service provider server 108. Do. That is, the user may connect to the public switched telephone network 110 using the wired communication terminal 102 and directly enter the unique number embedded in the receiver 112 to find the lost object.

Electronic telephones that currently press a button provided in a landline telephone generate two signals having a specific frequency when each number or special character assigned to the button is pressed, for example, * or ＃.

Table 1 below shows two frequencies allocated to each button of the wired communication terminal 102.

Frequency 1209 Hz 1336 Hz 1477 Hz 697 Hz One 2 3 770 Hz 4 5 6 852 Hz 7 8 9 941 Hz * 0 ＃

Referring to Table 1, for example, pressing button 1 of the wired communication terminal 102 presses the frequencies 697 Hz and 1209 Hz, pressing the button 5 the frequencies 770 Hz and 1336 Hz, and pressing the button 9 the two signals having frequencies 852 Hz and 1477 Hz. A signal with a superimposed waveform is generated. Therefore, when the user presses a specific phone number of the counterpart to which the user wants to talk, a signal of a waveform in which two signals having frequencies assigned to each number are superimposed is generated and transmitted to the electronic exchange of the public switched telephone network 110, and received by the electronic exchange. The decoded signal is decoded and the signal is transmitted to the phone of the counterpart corresponding to the decoded telephone number. Similarly, the unique number embedded in the receiver 112 can be distinguished from each receiver 112 using the unique number if a different unique number is assigned to each receiver.

Therefore, in the embodiment of the present invention, the user directly inputs a unique number embedded in the receiver 112 attached to the lost item using the wired communication terminal 102 to find the lost item.

In an embodiment of the present invention, the user presses a lost mobile device search service phone number provided by a wired network operator, for example, 188 or 199, using a wired communication terminal 102 to access a lost mobile device search service, and then reads the announcement. Listen to your back and press a unique number to find your belongings. That is, if the unique number of the receiver 112 attached to the lost item is 56789, the user presses 188 or 199 using the wired communication terminal 102 and then continuously presses 5, 6, 7, 8, and 9 times. Lost and Found

On the other hand, the internal configuration of the receiver 112 in the above embodiment not via the mobile operator server 108 is generally similar to that described in FIG. 5, but the RF receiving module unit 502 is configured differently. That is, the RF receiving module unit 502 of the receiver 112 described with reference to FIG. 5 is configured to receive a signal having a frequency belonging to a frequency band of 1.7 to 1.8 GHz. However, the RF receiving module unit 502 of the receiver 112 described below is configured to receive a signal having a frequency belonging to a frequency band of approximately 900 MHz used in the home wired communication terminal 102.

Of course, the lost portable device search service phone number may be assigned a different number by the wire network operator. In addition, if the unique number can be transmitted in a manner that can be distinguished from the existing telephone number, other methods besides the above-described method may be possible.

9 is a flow chart showing a lost property detection process according to another embodiment of the present invention.

The user accesses the public switched telephone network 110 by pressing a specific telephone number, for example, 188 or 199, which provides the lost portable goods search service using the wired communication terminal 102 (S900). The user inputs the unique number of the receiver 112 attached to the lost and found through the wired communication terminal 102 (S902). The unique number input by the user is transmitted from the public switched telephone network 110 to the wireless base station 104 via the mobile communication switching center 106 (S904). The wireless base station 104 transmits a signal including the received unique number (S906). The receiver 112 receives the signal transmitted by the wireless base station 104 (S908), and determines whether the unique number included in the received signal matches the unique number stored in the unique number storage unit 506. (S910). If the unique numbers do not match, the receiver 112 maintains the normal mode (S912), and if the unique numbers match, the receiver 112 switches to the alarm mode from the normal mode and operates (S914).

On the other hand, the above embodiments have been described by the method using the public switched telephone network 110, the signal from the wired / wireless combined telephone of the wired communication terminal 102 directly to the receiver 112 without passing through the public switched telephone network (110) It is also possible to detect lost items by sending a message. In more detail, as described in the above embodiment, when a user directly inputs a unique number of a receiver attached to a lost object by using a wired / wireless combined telephone, a signal belonging to a 900 MHz frequency band including information of the unique number is generated. It is transmitted from the antenna of the magnetic part of a wired / wireless combined telephone and propagates. Here, the magnetic part refers to a wireless terminal that makes a call in a combined wired / wireless telephone, and correspondingly, a mosquito mosquitoes a part of a telephone line connected to receive a signal transmitted from the magnetic part and transmit it to the public switched telephone network 110. It is called wealth. At this time, if the receiver 112 is within a distance sufficient to receive a signal transmitted from the magnetic part, for example, several meters to several tens of meters, the receiver 112 receives the signal transmitted from the magnetic part, and then compares the unique number. To determine whether to operate in alarm mode. Therefore, the unique number is also preferably set to be distinguished from the general telephone number as described above. That is, you can enter a unique number after pressing a number such as * 199 or # 199 using * or # which is not used in general telephone numbers. For example, if the unique number of the receiver attached to the remote control is 123, the unique number of the receiver attached to the wallet is 124, and the unique number of the receiver attached to the mobile phone is 125, the user presses * 199 or # 199 and enters 123. Can be detected.

This method can be used simply and usefully because people usually lose their belongings at home.

As described above, in the conventional anti-lost device, since the frequency of the signal transmitted from the transmitter generally uses a medium frequency or short wave band, the receiver often cannot properly receive the radio wave transmitted by the transmitter. Since the frequency of the high frequency band used by the communication terminal is used, malfunctions as in the prior art are hardly generated.

In addition, the frequency band of the signal transmitted from the transmitter is set slightly differently for each portable device, and the receiver itself can adjust the reception frequency band for each portable device, so that there is an advantage that one type of receiver can be used for various portable devices.

In addition, the transmitter transmits the unique number assigned to each item on the signal transmitted by the transmitter, and stores the unique number assigned to each item on the receiver so that only the receiver attached to the selected item can activate the alarm sound or alarm. do.

Claims (21)

A system for detecting a lost object by a user having a transmitter and a receiver using a communication network, A transmitter for the user to select the lost item; A wireless base station receiving a signal from the transmitter or generating and transmitting a signal having a frequency of a specific band; A mobile communication switching center connected to the wireless base station to process a connection request of the wireless communication terminal; A mobile telecommunication service provider server connected to the mobile telecommunication switching center and providing a service for searching for the lost item; And Receiving a signal transmitted from the wireless base station, the receiver is attached to the lost object that the alarm sound or alarm is activated Lost and Found detection system comprising a. The method of claim 1, The transmitter is a lost and found detection system, characterized in that the wireless communication terminal including a mobile phone or a personal digital assistant (PDA) and a wired communication terminal including a landline telephone or a wired / wireless combined telephone. The method of claim 2, Loss and property detection system, characterized in that the connection to the mobile communication operator server using the wired communication terminal is made through a public switched telephone network (PSTN). The method of claim 1, The receiver is A control unit controlling overall operation of the receiver through data transmission and reception at the receiver; An RF receiving module unit for receiving the signal transmitted from the transmitter through an antenna (ANT); A frequency filter unit comprising a plurality of band pass filters (BPF) and passing only the signal having a frequency belonging to a frequency band of each band pass filter; A switching unit configured to control the signal passing through a specific band pass filter set by the user among the band pass filters to be transmitted to the controller; A key input unit connected to the control unit and configured to set the frequency filter unit according to the portable device to which the user attaches the receiver; A display unit for displaying a list of the portable goods stored in the receiver in advance; And A sound unit and a lamp unit for allowing the receiver to emit an alarm sound or to flash an alarm lamp in the alarm mode. Lost and Found detection system comprising a. The method of claim 4, wherein The receiver is A demodulator for demodulating the signal passing through the frequency filter unit and transferring original signal information to the controller; A power supply unit supplying power to the receiver; And A mode setting unit for setting whether the receiver emits an alarm sound or flashes an alarm lamp in an alarm mode; Lost and found detection system further comprises. The method of claim 1, The receiver is A control unit controlling overall operation of the receiver through data transmission and reception at the receiver; An RF receiving module unit for receiving the signal transmitted from the transmitter through an antenna; A demodulator for demodulating the signal received by the RF receiving module unit, extracting a unique number and signal information, and transferring the signal information to the controller; A unique number storage unit which receives the unique number from the demodulation unit and determines whether the unique number matches the previously stored unique number; And A sound unit and a lamp unit for allowing the receiver to emit an alarm sound or to flash an alarm light in the alarm mode. Lost and Found detection system comprising a. The method of claim 6, The receiver is And a power supply unit for supplying power to the receiver, and a mode setting unit for setting whether the receiver emits an alarm sound or flashes an alarm light in an alarm mode. The method according to claim 4 or 6, And the alarm mode is a state in which the receiver operates the sound unit or the lamp unit. The method of claim 4, wherein And the number of band pass filters is equal to or greater than the number of portable items provided by the service provider in the service. The method of claim 4, wherein The receiver can be attached to all of the portable goods by adjusting the frequency filter through the key input unit. The method of claim 6, The unique number is a loss code detection system, characterized in that a code (Code) consisting of a series of numbers or letters are assigned to each of the portable devices provided by the service provider. The method of claim 11, The signal transmitted from the transmitter includes the unique number assigned to the portable device selected by the user. The method of claim 12, The receiver is an adhesive type attached to a material having a property of bonding to one side of the receiver, a magnet type attached to a material having a magnetic force on the one side and a ring type to connect a string or metal to one or both sides of the receiver Lost and Found detection system, characterized in that the production. A method for detecting a lost object by a user having a transmitter and a receiver using a communication network, (a) accessing a mobile service provider server using the transmitter; (b) selecting a lost item using a lost portable item search service provided by the mobile service provider server; (c) transmitting, by the mobile operator server, a signal indicating the lost item selected by the user to a wireless base station; (d) the wireless base station transmitting a signal having a specific frequency in response to the signal received from the mobile operator server; (e) receiving, by the receiver, the signal transmitted from the wireless base station to determine whether the signal is a signal for operating itself in an alarm mode; And (f) the receiver operating in an alarm mode according to the received signal Lost and found detection method comprising a. The process of claim 14, wherein in step (c) The lost object detection method is characterized in that it contains information about the frequency band assigned to the lost or found, including information about the unique number assigned to the receiver attached to the lost and found. The process of claim 14, wherein in step (e) The method for determining whether the receiver is to switch to the alarm mode is determined whether the signal received by the receiver has a frequency belonging to the frequency band of the receiver set by the user or included in the signal received by the receiver Loss and thing detection method characterized in that the comparison with the unique number stored in the unique number stored in the receiver. A method for detecting a lost object by a user having a wired communication terminal and a receiver using a communication network, (a) inputting a specific number using the wired communication terminal to access a public switched telephone network; (b) inputting a unique number of the receiver attached to the lost item using a lost baggage retrieval service provided by the public switched telephone network; (c) the public switched telephone network transmitting a signal including the unique number to a wireless base station via a mobile communication switching center; (d) the wireless base station receiving the signal transmitting the signal; (e) receiving, by the receiver, the signal transmitted from the wireless base station and determining whether or not it matches a unique number stored therein; And (f) the receiver operating in an alarm mode according to the received signal Lost and found detection method comprising a. 18. The process according to claim 17, wherein in step (d) The lost signal detected by the wireless base station includes information on the unique number assigned to the receiver attached to the lost and found. The method of claim 17, The RF receiving module unit of the receiver comprises a module capable of receiving a signal having a frequency belonging to the 900 MHz frequency band. In a method for detecting a lost object by a user having a wired / wireless combined telephone and a receiver, (a) inputting a unique number of the receiver attached to the lost item by using the wired / wireless combined telephone; (b) transmitting a signal from a magnetic part of the wire / wireless combined telephone; (c) the receiver receiving the signal to determine whether the signal is a signal for operating itself in an alarm mode; And (d) the receiver operating in an alarm mode according to the received signal Lost and found detection method comprising a. The process of claim 20, wherein in step (c) The method of determining whether the receiver is to switch to the alarm mode is characterized in that the lost number detection method characterized in that the comparison with the unique number stored in the receiver and the unique number included in the signal received by the receiver.