KR20160065275A - Automatic selection of a communication signal loss prevention system and method using a Bluetooth signal - Google Patents

Abstract

The present invention relates to a communication signal automatic selection anti-lost system and a method thereof using a Bluetooth signal in which a cellular phone is linked as a master terminal with a slave terminal included in an accessory to generate a communication reception signal and serves as a master terminal with respect to the slave terminal. More particularly, the communication signal automatic selection anti-lost system includes an accessory which serves as a master terminal (MD) or a slave terminal (SD) in real time according to a time division system and is carried while attached to a user′s body. According to the communication signal automatic selection anti-lost system, a communication from a cellular phone and a signal from the accessory are checked in real time based on a signal which is transmitted and received on a Bluetooth channel, such that a communication reception signal and a loss signal are delivered to a user. When a signal including a slave-specific code is not received from the slave terminal (SD) for a predetermined period, it is determined that the slave terminal is away from the user, and a signal is delivered to a vibration motor of the accessory to drive the vibration motor, such that the user can look for belongings.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a communication signal loss prevention system,

The present invention relates to a mobile communication terminal which generates a communication reception signal by operating a mobile phone as a master terminal and a sleep terminal, and an automatic communication signal selection device using a bluetooth signal, which is an ornamental terminal performing a role as a master terminal, More particularly, the present invention relates to a system and method for preventing loss, and more particularly, to a time-division system that operates in real time as a master terminal (MD) or a slide terminal (SD) The present invention relates to a communication signal automatic selection loss prevention system using a Bluetooth signal that transmits a communication reception signal and a lost signal to a user by generating a signal by checking a communication signal of a mobile phone and a signal of an accessory in real time.

As the era develops, you have to carry a variety of things such as handbags, briefcases, cell phones, wallets, books, etc., so you can not find your belongings and sometimes you get hung up on the subway or taxi. I often lose something that I see personally, especially when I am accompanied by a child. Children with curiosity run around freely.

In the event of such an accident, the problem of finding belongings is not only cumbersome and cumbersome, but also causes economic losses and economic disruptions.

For example, when a wallet is lost, various ID cards or cards stored in the wallet need to be reissued, and the card is illegally used by others, resulting in economic loss. In the case of a mobile phone, The loss of hand-held items has a huge negative impact on the users, since many of the data are lost, which hinders economic activities.

In recent years, with the development of portable terminals, a variety of optional functions have been added to satisfy users' needs by developing a large number of software such as an MP3 player, a navigation system using GPS (Global Positioning System), and a Bluetooth function .

Among them, the Bluetooth function that enables short range wireless communication has contributed greatly to expand the communication range of the mobile communication system to a more detailed area. Due to such characteristics, portable terminals with Bluetooth chips are now widely used.

Accordingly, a variety of methods and devices for easily finding belongings as well as preventing the loss of personal belongings by using a Bluetooth signal are being developed. As a prior art developed so far in Korea, only communication with a mobile phone using a Bluetooth signal is performed A system is constructed or a master terminal which can receive a user to simply receive a notice of loss of a portable device is carried and a portable terminal is provided with a sleep terminal for transmitting a radio wave every predetermined period, Only the loss prevention system in which the alarm sound is outputted from the master terminal when the terminal is not received is implemented. Hereinafter, the patent document will be described.

More particularly, the present invention relates to a method and system for preventing loss by using an RF tag, and more particularly, A method of preventing a loss, which transmits a radio wave from an antenna and is received by a reader, comprising: inputting personal information data to an RF tag in a tag writer; Operating the integrated circuit chip of the RF tag with radio waves radiated from the antenna; A personal information data signal containing the personal information data is transmitted by the RF tag; A step of receiving the personal information data signal by the reader and outputting the personal information data to the converter, and adding the place and the contact information of the reader to the personal information data. The method and system to prevent loss can be used to record RF tags at facilities such as convenience stores so that they can record contact information so that they can identify their position when kidnapped or abducted, There is no worry about exposure. In addition, if the IPV6 environment is configured and the ubiquitous sensor network is constructed, the RF tag can be automatically recognized even if there is no dedicated recognition device, and notification can be made to the management server. [0001] The present invention relates to a method and system for preventing loss using a portable terminal and a headset, and more particularly, to a method and system for preventing loss by using a portable terminal and a headset, By detecting the departure rate of the headset, it is possible to prevent the loss of the headset and the portable terminal by alarming when the portable terminal and the headset are separated from each other by a predetermined distance. More particularly, the present invention relates to a portable terminal preventing and searching apparatus having a bi-directional communication function, and more particularly, If a response to the sub terminal or a communication signal is not received for a predetermined time by short-range wireless communication, it is judged that the portable article equipped with the sub terminal is spaced apart from the user (step S2) (S1, S1a), a radio link channel is formed and the link channel formed from the sub terminal is periodically checked to determine the state of the separation (the loss of the radio link is prevented (S3)), The sub terminal is instructed to operate the sub terminal in the next operation mode to prevent the loss of the mixed mode efficiently (S4)) A main terminal accommodated in a wallet of a user having a function for easily finding a function and an object attached with the sub terminal or being worn on the waist, a wireless communication with a signal including a main terminal and a local unique code Informs the main terminal of the presence of the sub terminal in response to the signal of the main terminal, and informs the main terminal that it is not separated (prevents the sub-ledger from being lost (S2)) or sets its own timer at a predetermined period, When the signal is received, it is cleared to know that it is not separated from the main. On the other hand, when the signal is not received for a predetermined period, , Periodically checks the radio link formed by the main terminal, and if the link is disconnected, (S3), or when an operation mode instructed by the main occurs, the current operation mode is converted into the commanded operation mode, and the operation mode is operated to prevent the power consumption of the battery, which is a problem of the portable device, It is possible to prevent an erroneous operation due to interference to prevent an efficient loss prevention (prevention of loss of a mixed mode (S4)) and to allow a user having a function for allowing the main terminal or the sub terminal to easily find an attached article A plurality of sub-terminals mounted or attached to a portable article carried by a user; . A slave of RFID tag function having unique identification information in an internal tag memory and an RFID reader function, A slave can be recognized as a handheld type master capable of changing at least one of a cognitive distance and a cognitive width. By warning the user of an alarm or an object when a predetermined distance between the user and the cognitive object is disturbed, It helps you find things you want, such as your home, quickly, when you want. Patent Application No. 10-2011-0002142 (Jan. 10, 2011) relates to a system and method for preventing loss using Bluetooth devices that connect the portable terminal and the Bluetooth device using the Bluetooth communication system. The Bluetooth device includes a Bluetooth device When only the Bluetooth device to be used transmits its own address or name, a preliminary agreement code is added to the portable terminal, and the portable terminal checks whether the agreement code exists when connecting the Bluetooth devices, And automatically switches to the loss prevention mode. When the selected Bluetooth device is separated from the selected Bluetooth device by a predetermined distance, the portable terminal and the corresponding Bluetooth device generate an alarm to prevent the loss. Patent Application No. 10-2011-0002148 (Jan. 10, 2011) relates to a system and method for preventing loss using a Bluetooth device that connects the portable terminal and a Bluetooth communication system. Even if a loss prevention device is connected to the portable terminal And a Bluetooth headset device using the same Bluetooth profile as the loss prevention device. The patent application No. 10-2011-0127795 (Dec. 1, 2011) determines whether or not an item is lost by detecting a wireless communication state change between a wireless communication module mounted on the product and an application mounted on the smartphone, A system and a method for preventing loss of articles that can be notified, including a smart phone equipped with an article and a loss prevention application, and a wireless communication module mounted on the article and communicating wirelessly with the smart phone, And periodically performs wireless communication with the wireless communication module to determine whether or not the article is lost through the wireless communication state change detection. When it is determined that the article is lost, the lost information of the article can be informed to the user. The patent application No. 10-2013-0020334 (Feb. 26, 2013) discloses a method of using mobile memory only within a predetermined interval between a smart phone and a removable memory by using RSSI signal strength between a mobile memory and a smart phone, And to limit the use of removable memory when the set interval is exceeded.

However, the loss prevention system and method so far are merely a function that performs only the function of preventing the loss of the portable device, but can not perform other functions, and it is difficult to simultaneously perform the function of notifying the user of the loss of the mobile phone terminal or the communication signal .

Therefore, the present invention is always applied to the body ornaments between the mobile phone and the mobile phone as a master terminal, the trinket serves as a slider terminal, accessories hanging on the belongings between the personal effects as a slideshow terminal as a master terminal ornaments So that it is possible to confirm in real time whether or not the received signal of the mobile phone and the article to which the accessory is attached are lost.

A mobile phone owned by an individual is made a master terminal (MD), a plurality of accessories are made up of a slide terminal (SD), time-division signals received from a master terminal (MD) The master unique code is read in real time to determine whether the terminal is a registered terminal. When a signal including a master inherent code is received, the signal is separated stepwise and transmitted to the LED display unit, The signal transmitted and received from the sleeves constituted by the accessory is time-divided. The signal is then read in real time to determine whether the terminal is a registered one. If no signal containing the slive specific code is received from the sleep terminal (SD) for a period of time And then transmits a signal to the vibration motor so that the user can find the portable article, thereby configuring a communication signal automatic selection loss prevention system using a Bluetooth signal having a multi-terminal (MULT) And transmits the signal including the master unique code to the mobile terminal at predetermined intervals using the Bluetooth signal generated in the mobile phone as a master terminal (MD). The mobile terminal reads and transmits the unique code inputted from the received signal, And selects and instructs the operation; A multi terminal (MLTD) that simultaneously performs a master terminal (MD) and a sleep terminal (SD) role by time-dividing a received signal and detecting and processing in real time is constituted of ornaments including rings, necklaces and bracelets, And an alarm signal is output when a signal including a unique code is not received for a predetermined time period; (MLTD) continuously transmits a signal including a predetermined slab unique code to a multi terminal (MLTD), and the multi terminal (MLTD) recognizes it and communicates with the Bluetooth signal so as to check whether the portable article is lost, A method of preventing automatic loss of communication signal using a Bluetooth signal is implemented so as to simultaneously perform the loss prevention function.

In the present invention, the ornaments adhered to the body are always held between the mobile phone and the mobile phone as a master terminal, and the trinket functions as a slider terminal, while the trinket belongs to an accessory hanging on the belongings. So that the communication signal of the mobile phone and whether or not the article with the accessory attached thereto are lost can be confirmed in real time, thereby displaying the communication signal and providing convenience of preventing loss of the article.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an illustration of an overall configuration state of a system embodying the present invention;
2 is a specific example status diagram of the overall configuration of a system embodying the present invention;
3 is a block diagram of a specific configuration for implementing the present invention;
Fig. 4 is a diagram showing examples of the operation sequence and the operation status of the present invention; Fig.
5 is a flow chart showing the operation mode of the loss prevention function of the present invention.
6 is a diagram illustrating an example of the configuration of an ornament of a multi terminal (MLTD) which is a main part of the present invention.
7 is a diagram illustrating an example of the configuration of an LED display part which is a main part of the present invention.

The construction of the present invention will be described in detail with reference to the accompanying drawings.

In implementing a system for preventing reception of a communication signal of a cellular phone owned by an individual and the destruction of an article possessed by an individual and an implementation method thereof,

A mobile phone owned by an individual is made a master terminal (MD), a plurality of accessories are made up of a slide terminal (SD), time-division signals received from a master terminal (MD) The master unique code is read in real time to determine whether the terminal is a registered terminal. When a signal including a master inherent code is received, the signal is separated stepwise and transmitted to the LED display unit, The signal transmitted and received from the slide terminal constituted by the accessory is time-divided, and then it is determined whether the terminal is a registered terminal by reading the slive unique code in real time, and the signal including the slive unique code is wirelessly received. If a signal including a slab specific code is not received from the slideshow terminal SD for a predetermined time, And then transmits a signal to the vibration motor so that the user can find the portable article, thereby configuring a communication signal automatic selection loss prevention system using a Bluetooth signal having a multi-terminal (MULT) And transmits the signal including the master unique code to the mobile terminal at predetermined intervals using the Bluetooth signal generated in the mobile phone as a master terminal (MD). The mobile terminal reads and transmits the unique code inputted from the received signal, And selects and instructs the operation; A multi terminal (MLTD) that simultaneously performs a master terminal (MD) and a sleep terminal (SD) role by time-dividing a received signal in real time and processing it is composed of rings, necklaces, bracelets and other accessories, And an alarm signal is output when a signal including a unique code is not received for a predetermined time period; (MLTD) continuously transmits a signal including a predetermined slab unique code to a multi terminal (MLTD), and the multi terminal (MLTD) recognizes it and communicates with the Bluetooth signal so as to check whether the portable article is lost, A method of preventing automatic loss of communication signal using a Bluetooth signal is implemented so as to simultaneously perform the loss prevention function.

That is, the cellular phone 50, which the individual possesses, is connected to the master terminal MD; A sleep terminal (SD) each composed of a plurality of accessories (60); The signal received from the master terminal (MD) 50, which is the mobile phone 50, is time-divided, and then it is determined whether the terminal is a registered terminal by reading the master specific code in real time. When a signal including the master unique code is received And transmits the signal to the LED display unit 15 and selectively transmits the signal to the vibration motor 14 and drives the signal to transmit the signal received from the sleep terminal SD composed of the accessory 60 to time division , A signal containing a slab unique code is received from the slid terminal (SD) for a predetermined time, The vibration motor 14 transmits a signal to the vibration motor 14 so that the user can find the portable article, By configuring the communication signal automatically selected loss prevention system using a Bluetooth signal to the drive,

The mobile terminal 50 is used as a master terminal (MD) to wirelessly transmit and receive a signal including a master unique code at predetermined intervals using a Bluetooth signal generated in the mobile phone 50, Determines whether the terminal is a registered terminal, and instructs the operation thereof; A controller 11 for detecting a time-divisionally received signal in real time and processing the received signal in real time, a transceiver 13 for receiving an external signal or transmitting a signal to the outside, A vibration motor 14 that vibrates in response to a signal generated by the control unit 11 and an LED display unit 15 that is separated and displayed in at least three colors in accordance with a signal generated by the control unit 11. [ A battery 16 for applying power to the control unit 11, the vibration motor 14, the LED display unit 15, and the transceiver unit 13; A charging pin 17 for charging the battery 16 and a button 20 for selecting a signal to be processed by the control unit 11 and selecting an emergency signal transmission, A multi terminal (MLTD) that simultaneously performs a role of a live terminal (SD) is composed of a ring, a necklace, and an accessory (10) including a bracelet, and transmits and receives a signal including a master unique code at a predetermined cycle, Determines whether the terminal is a registered terminal by reading the entered unique code, and outputs an alarm signal if a signal including a unique code is not received for a predetermined time;

A control unit 61 for receiving and processing a received signal in real time, a transmission / reception unit 63 for receiving an external signal or transmitting a signal to the outside, a battery 61 for supplying power to the control unit 61 and the transmission / A plurality of accessories 60 constituting a built-in slider terminal (SD), which is built in or attached to a portable article carried by the user, MLTD), and the multi-terminal (MLTD) recognizes the loss of the hand-held item.

Here, the sleep terminal SD constituting the accessory 60 determines whether the terminal is a registered terminal by reading the master inherent code from a signal transmitted from the master terminal MD and receiving the master inherent code, When a signal including the master code is not received from the master terminal (MD) for a predetermined period of time by transmitting the signal including the slab unique code to the master terminal (MD) in response to the signal, It is possible to output an alarm sound so that the user can easily find the portable article.

Hereinafter, an embodiment of the present invention will be described.

The present invention comprises a trinket 10 such as a necklace or a bracelet ring with a built-in multi-terminal (MLTD), so that it is always held by a user, and a master unique code generated in the mobile phone 50, which is a master terminal The Bluetooth signal is time-divided in the timer 12 and received in real time. At the same time, the slope inherent code generated in the slider terminal (SD) built in the accessory 60 is time-divided by the timer 12 and received in real time .

The control unit 11 receives the Bluetooth signal including the master unique code generated in the mobile phone 50 which is the master terminal MD and analyzes the reception of the received SMS to receive the SNS, Green, and Blue) LEDs, and the LED display unit 15 displays different signals for different types of signals.

Then, it is determined whether the terminal is a registered terminal by reading the slab inherent code from the received Bluetooth signal transmitted from the sleep terminals SD1 to SDn every predetermined period, and from the sleep terminals SD1 to SDn for a predetermined time (MLTD) which is composed of trinkets (10) for judging that the portable article on which the slive terminals (SD1 to SDn) are mounted is separated from the user when the Bluetooth signal including the slive unique code is not received .

In addition, in order to prevent malfunction or malfunction of the power system while communicating with a near-bluetooth signal, the operation mode is determined according to the situation. By preventing malfunction due to interference with other terminals at the same place, efficient blending prevention operation is controlled, I can express my poetry.

The sleep terminal SD configured in the accessory 60 mounted on or attached to the portable article carried by the user is provided with a plurality of sleep terminals SD1 to SDn so as to judge that the portable article is separated from the user And repeatedly transmits the Bluetooth signal to the multi terminal (MLTD) composed of the ornaments (10).

The multi terminal (MLTD) and the sleep terminals (SD1 to SDn) constitute a controller (11) (61) for storing a program and various data for functioning for operation and registration.

The plurality of sleep terminals SD1 to SDn may have the same structure as a program such as a multi terminal (MLTD), but may be simply configured as needed.

And outputs the bluetooth signal including the slab inherent code output from the slide control unit 61 to the slot transmission unit 63 so that short-distance transmission of 1 to 2 m is performed in the normal operation mode.

The sleep control unit 61 of the plurality of sleep terminals SD1 to SDn generates a search Bluetooth signal by itself to send a real time or continuous signal to the multi terminal MLTD worn by the user.

The multi terminal (MLTD) built in the ornament 10 of the present invention performs a master function and a slew function in real time, and is constructed such that the user always carries the body.

Also, the plurality of slide terminals SD1 to SDn may be formed of various kinds of accessories 60 so that they can be carried on a mobile phone, a key ring, or other portable article, and carried along with the portable article.

A plurality of slide terminals SD1 to SDn constituted by a multi terminal (MLTD) composed of the ornaments 10 of the present invention and various kinds of accessories 60 can transmit all keys to a mobile terminal .

  ◆ Terminal registration ◆

 A plurality of slide terminals SD1 to SDn constituted by a plurality of accessories 60 and a plurality of terminals MLTD constituted by a plurality of accessories 10, A plurality of the slide terminals SD1 to SDn constituted by various kinds of accessories 60 can be registered in the MLTD.

After setting the button 20 of the multi terminal (MLTD) composed of the accessory 10 to the operation registration mode, the Bluetooth specific code and the PANID of the cellular phone held by the user are stored When the power is turned on, the execution program checks whether the set PANID conflicts with the same PANID, and if not, establishes the wireless link with the corresponding PANID.

When the power is turned on after inputting the corresponding PANID and its own ID in the SD terminals, the execution program of the sleep function connects to the corresponding PAN ID to establish a link, and then the terminal (MLTD) and the SD terminal ) Communicate with each other and store the variables and data necessary for operation in their respective memories.

After completing the registration procedure in the multi terminal (MLTD) and the sleep terminal (SD), the multi terminal (MLTD) and the sleep terminal (SD) operate normally with the function set by the program stored in their memory.

 ◆ The initial behavior of the program ◆

When the power is turned on, the multi terminal (MLTD) receives the signal from the cellular phone and Bluetooth specific code possessed by the user, secures the wireless link with the set PANID, establishes the wireless link and connects the sleep terminals (SD1 to SDn) waiting.

 Upon receipt of power, the sleep terminals SD1 to SDn confirm whether the established multi-terminal has established a wireless link with the set PANID, and when the establishment of the wireless link is confirmed, they connect to the multi terminal (MLTD) And periodically sends a signal to the multi terminal (MLTD).

The multi terminal MLTD continuously checks its radio state every period, determines the most favorable operation mode in the current state, and then instructs the sleep terminals SD to operate in a determined mode. For example, if there is no interference with a terminal owned by another person in the same place, the mode is a mode of reducing power consumption. If there is interference, it is confirmed that another radio channel free from interference is detected and the channel number is transmitted to the sleep terminal And then establishes and establishes a radio link to the new channel.

Slide terminals are disconnected from a currently used link and newly connected to a newly formed link so as to perform a loss prevention operation with the main terminal, thereby preventing a malfunction due to interference from another terminal.

If the multi-terminal determines that the wireless state is stabilized, the multi-terminal instructs the sleep terminals to move the current operation to the low-power mode operation, and the instructed sleep terminals to the low power consumption mode Switch the operation mode to reduce power consumption.

That is, if necessary, the main controller decides the operation mode of the sleep terminals and manages the operation so that the loss prevention operation can be carried out with a necessary command.

 ◆ Communication signal display and prevention of lost goods ◆

The portable device loss prevention operation is the operation of the normal operation mode of the multi terminal (MLTD) and the sleep terminals (SD1 to SDn).

When the user sets the normal operation mode by operating the button 20 of the multi terminal MLTD, the control unit 11 receives the Bluetooth signal from the user's cellular phone via the transmission / reception unit 13 Divides it into RGB, and outputs the current operation state and displays it. The LED display unit 15 displays the current operation state by displaying the current operation state.

At the same time, the control unit 61 of the slider terminal SD, which is made up of the accessory 60, also receives the slive inherent code generated through the transmission / reception unit 63, .

The control unit 11 of the multi terminal MLTD establishes a wireless link with the PANID set to match the loss prevention function according to the execution of the master function program. At this time, the sleep terminals SD1 to SDn transmit a wireless link When the wireless link is established by the multi terminal (MLTD), it is confirmed that it has been established and is connected thereto. At this time, the control unit 11 of the multi-terminal MLTD automatically recognizes the connected sleep terminals SD1 to SDn and confirms the information thereof by the program, 61).

Then, the control unit 11 of the multi terminal MLTD confirms the wireless state established by the user at every predetermined period and instructs the connected SD terminals to perform an operation corresponding to the current state.

This state requires a loss prevention operation (S1) led by a multi terminal (MLTD) to reduce power consumption, a loss prevention operation (S2) of a slip driving method, a loss prevention operation (S3) And instructs the sleep terminals SD1 to SDn to determine the next operation. The SLAVE terminals receiving the commands perform corresponding operations at the request of the MLTD to reduce malfunction caused by the power loss of the portable equipment when the terminals are mixed with the terminals having several persons.

The control unit 11 of the multi terminal MLTD determines that the portable device is in a dangerous state of loss and activates the vibration motor 14 or the operation of the vibrating motor 14 R LED is blinking.

On the other hand, the safety mode can be set by operating the button 20 of the multi terminal (MLTD).

Safe mode is used in places where the user does not have to go to the bathroom for a while or risk losing their belongings like office.

Even if the multi terminal MLTD and the sleep terminals SD1 to SDn are separated from each other by a predetermined distance, a lost signal is not outputted and the real life can be stably performed.

The control method of the loss prevention device of the present invention, and the control method of the loss prevention and search device using the flowchart will be described as follows.

◆ Multi-terminal-driven loss prevention operation ◆

In setting the alarm mode, the multi terminal (MLTD) sequentially transmits call signals to the individual sleep terminals (SD1 to SDn) at predetermined intervals.

The sleep terminals SD1 to SDn wait for entry into a sleep state after setting to generate an interruption in a timer counter and an interruption in a radio reception;

The sleep terminals SD1 to SDn receive an interrupt and wirelessly receive the Bluetooth signal transmitted from the multi terminal MLTD;

The sleep terminals SD1 to SDn analyzing the received messages and receiving them if they match their own codes;

Responding to messages received from the multi-terminal (MLTD) if the sleep terminals (SD1-SDn) match their unique codes;

The multi terminal MLTD determines that the sleep terminals SD1 to SDn are in a dangerous state to be lost if a response signal is not received from the sleep terminals SD1 to SDn and outputs an alarm operation;

The sleep terminals SD1 to SDn may be interrupted by a timer counter every predetermined period, and may determine whether a radio reception completion flag is checked or not.

When the user inputs the button 20 configured in the multi terminal MLTD and the alarm mode is set, the control unit 11 of the multi terminal MLTD receives the one of the sleep terminals SD1 to SDn (SDs) to the sleeping terminal (SDs) after transmitting the calling signal including the unique code of the selected sleeping terminal to the sleeping terminal (SDs).

At this time, the sleep terminals SD1 to SDn wait for the sleep state to enter the sleep state after the timer count is set so as to generate the interrupt after a predetermined time so that the interrupt is generated in the radio reception. An interrupt is generated in the sleep terminals SD1 to SDn and the control unit 61 of the sleep terminal transmits the received call signal (message) The MLTD transmits a response signal to the MLTD when the comparison result shows that the MS does not communicate with the MLTD because the selected SDLs are spaced apart from the MLTD, It is judged that the sleep terminals SDs are separated from each other because the response of the live terminals SDs can not be received and the vibration motor 14 is operated or the R LED of the LED display section 15 is turned on to output an alarm operation, A user who wears the accessory 10 with the built-in MLTD will know the lost status.

When the user sets the normal operation mode by operating the button 20 of the multi terminal MLTD, the control unit 11 controls the EL LED display unit 15 So that the user can confirm the selection state of the mode.

When the alarm mode is set, the control unit 11 of the multi-terminal MLTD sequentially selects the sleep terminal every predetermined period, transmits a paging signal including the unique code of about 1 ~ 2m, and 5 ~ 8m depending on the mode And the signal is amplified at a small amplification ratio so as to be output to the transmission and reception unit 13, and the transmission and reception unit 13 transmits the output signal through the antenna at a short distance and then waits for a response from the selected sleeping terminal.

When the user holds the portable article or the portable article is located within 1 to 2m of the transmission distance of the Bluetooth signal, the call signal transmitted from the transmission / reception section 13 of the multi terminal MLTD is normally transmitted to the selected sleep terminal SDs Upon receipt, the selective sleep terminal SDs reads out a unique code and a command included in the Bluetooth signal received at the transmission / reception unit 63 of the sleep terminal SD after waking up from the sleep state due to a wireless reception interrupt occurring in the selected sleep terminal SDs Compares the codes with their own codes, and if they match, transmits a response to the codes to the multi terminal (MLTD).

If the portable device is deviated from the Bluetooth signal transmission / reception distance, since the normal communication can not be performed, the multi terminal does not receive the response of the selected switch terminal, and the multi terminal judges that the selected switch terminal is distant, Or the R LED of the LED display unit 15 is turned on to output an alarm operation.

10: Accessory 11: Control 12: Timer
13: Transmitting / receiving unit 14: Vibration motor 15: LED display unit
16: Battery 17: Charging pin 20: Button
50: mobile phone 60: accessory 61:
63: Transmitting / receiving unit 66: Battery

Claims (2)

A signal received from a master terminal (MD), which is a mobile phone, is time-divided, and then a master unique code is read in real time to determine whether the terminal is a registered terminal. When a signal including a master unique code is received, And transmits the signal to the LED display unit and selectively transmits the signal to the vibrating motor to drive the signal. The signal received from the slideshow terminal constituted by the accessory is time-divided, If a signal including the slab unique code is not received from the SD terminal for a predetermined period of time, it is determined that the signal is separated from the user. A tandem to drive a vibration motor by transmitting a signal to a vibration motor A multi-terminal (MULT) communication signals automatically select loss prevention system using a Bluetooth signal. A mobile phone owned by an individual is used as a master terminal (MD) to wirelessly transmit and receive a signal including a master unique code at predetermined intervals using a Bluetooth signal generated in the mobile phone, and a unique code inputted from the received signal is read Determines whether the terminal is a registered terminal, and instructs the operation thereof; A multi terminal (MLTD) that simultaneously performs a master terminal (MD) and a sleep terminal (SD) role by time-dividing a received signal and detecting and processing in real time is constituted of ornaments including rings, necklaces and bracelets, And an alarm signal is output when a signal including a unique code is not received for a predetermined time period; (MLTD) continuously transmits a signal including a predetermined slab unique code to a multi terminal (MLTD), and the multi terminal (MLTD) recognizes it and communicates with the Bluetooth signal so as to check whether the portable article is lost, And the loss prevention function is simultaneously performed on the communication signal.

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