KR100762926B1 - Device for injustice outflow protection of infomation using mobile terminal - Google Patents

Abstract

As mobile terminals (portable devices with functions such as video and video communication, voice communication, call signal, Internet, TV broadcasting, entertainment games, and cameras) are spreading, information is exchanged at any time and place for voice, video and data. As a result, the convenience of life has a positive side and a negative side that is abused or abused in society, which is causing confusion in society. Due to unfiltered signals and phone calls in public places, the places requiring quietness suffer from noise pollution, and video and data are transmitted wirelessly. The situation was serious enough. In particular, when video communication becomes popular, more side effects, that is, the method of misusing information, will be diversified and advanced. In order to prevent such side effects, the present invention includes an indoor signal generator for instructing an operation conversion mode, a wireless receiver for detecting this signal, a portable terminal having the built-in signal, and an entrance and exit signal generator for solving a leakage propagation problem. It has developed a device to prevent illegal leakage of information through a mobile terminal that automatically converts or blocks only an operation mode that requires a restriction among the mobile terminal communication functions where necessary. Indoor signal generator installed indoors, general vibration conversion, reception vibration conversion, call blocking, video blocking (video of camera, TV and entertainment game), data transmission prohibition, ringing and signal of normal operation mode, wireless receiver The built-in handheld terminal will detect this signal and automatically switch to the selected mode or shut off, contributing to the technical prevention of all the side effects described above. Especially, the method to minimize the reception error of the entrance and exit signal generators installed to solve the leakage propagation problem is applied, and the method that minimizes the power consumption is proposed. It informs the owner in advance that the possession of the terminal and the part of the communication function is limited, and also prohibits the blocking of Internet access and data transmission by the portable terminal. In addition, mobile signal generators have been developed to enhance the security of the identity of high-level people or celebrities who can take unauthorized photographs after unauthorized access, and easily install and carry them in any place, thereby fundamentally blocking the possibility of going against the information society. Will contribute to.

Cell phone, access block, entrance and exit signal generator, indoor signal generator, wireless receiver

Description

Device for injustice outflow protection of infomation using mobile terminal

1 is a block diagram of an apparatus of the present invention.

2 is a block diagram of an entrance signal, exit signal and mode signal generated in the present invention.

3 is a block diagram of a signal generator of the present invention.

4 is an output relationship diagram of time of entering / exiting signal, leaving signal, and mode signal of the present invention.

5 is a detailed signal pattern configuration diagram when only the mode signal of the present invention is present.

6 is a block diagram of a portable terminal incorporating a wireless receiver of the present invention.

7 is a signal search flowchart of the controller in the mobile terminal according to the present invention.

8 is a block diagram of another mobile terminal having a separate controller according to the present invention.

9 is a block diagram of a conceptual entrance signal transmission area when a plurality of transmission antennas are installed in one entrance signal generator in the present invention.

FIG. 10 is a time chart illustrating an example of a temporal configuration of generated occupancy signals when a plurality of occupancy signal generators are applied to the present invention.

11 is a block diagram of a signal generator having a plurality of entrance signal generators according to the present invention.

12 is a configuration example of a signal pattern in the case of having a plurality of entrance signal generators according to the present invention.

13 is a flowchart of a signal search and operation mode of a mobile terminal according to the present invention.

14 is a picture substitute picture of the actual indoor signal generator according to the present invention.

Figure 15 is a picture of the actual product drawing substitute for a wireless receiver equipped with a mobile phone according to the invention.

* Description of the symbols for the main parts of the drawings *

10: indoor signal generator 11: key input unit

12 controller 13 display device

14,21,31: Digital modulator 15,22,32: RF converter

16, 23, 33: RF amplifier 17, 24, 34: attenuator

18, 25, 35: switch unit 19, 26, 36: antenna

20: signal generator 30: signal generator

40: wireless receiver 41: wireless receiver

42: power supply 43: controller

50: portable terminal 51: portable terminal controller

52: portable terminal circuit

The present invention relates to a device for preventing illegal leakage of information through a portable terminal, which enables selectively restricting various functions of the portable terminal at a specific area or at an arbitrary designated location.

Side effects of mobile devices can cause social confusion, and if not prevented, they will violate the face of information and communication power at once. To overcome this, devices to prevent illegal leakage of information through mobile devices Development is essential.

First of all, the illegal leakage prevention of information through the mobile terminal must be careful when limiting the freedom of communication because everyone should be legally guaranteed. Therefore, the problem of leakage propagation should be solved by the entrance and exit signal generators so that only handheld terminals where restrictions are necessary are applied so that no one can cause damage in good faith. The function selection button should be placed on the indoor signal generator.

Secondly, a method of reducing the battery consumption of a portable terminal by operating the wireless receiver only for a very short time is provided, and if only the wireless receiver is incorporated, it should be applied to any device.

Third, data transmission is prohibited, while text messages and data (computer files, etc.) should be prohibited from being sent and received, and Internet access by mobile terminals should be blocked.

Fourth, video blocking should prevent illegal leakage of information or indiscriminate listening or enjoying of TV broadcasts and entertainment games.

Fifth, portable signal generators should be developed to enhance the security of the identity of high-level people and celebrities, which should not be easily accessed by the general public.

Secondly, the holder should know in advance that the ringing mode allows the user to ring the device immediately, regardless of the call, and that some of the functions are limited.

Seventh, it is operated by simply plugging in the switch for easy installation, and is installed regardless of the concealment or exposure such as the ceiling, wall, and drawer of the place to be installed, and the product price should be made cheaply to minimize the burden on the user and the manufacturer of the mobile terminal. do.

By fully satisfying the above seven requirements, the selective limitation of the mobile terminal can be enabled, thereby preventing the abuse of the mobile terminal.

Up to now, the product has been developed or under development, the product is a circuit breaker that transmits jammer to the frequency used by the mobile phone and cuts off the communication, and a product that switches or blocks some functions by S / W as the frequency used by the mobile phone. It cannot be used illegally, and the S / W method is not disclosed, so it is not known exactly, but the expected problem is that the mobile phone of the outdoor can be affected by the leakage propagation. It is doubtful whether the mobile phone operates in the designated mode when the phone comes in a call state, and the user's burden is concerned because the price is expensive because a function similar to a repeater is required.

The present invention is to solve the problems of the prior art as described above, the device of the present invention, the room, the entrance and exit signal generator first to transmit a signal in a time division method (TDM) of the damage caused by leakage propagation This technology not only extends the operation area while preventing the interference and avoids interference, but also enters and leaves and transmits the mode signal in a certain pattern so as to find an effective pattern that is turned off and intermittently turned on for most of the time. Minimizing battery consumption, automatically converting the signal to vibration, making calls, preventing data transmission, and preventing illegal testing, storing and transmitting information with cameras to prevent illegal leakage of information and TV broadcasting. To prevent side effects that interfere with classes and office work By blocking the Internet access through the internet, blocking the indiscriminate internet access, prohibiting the transmission of data, and ringing to check the possession of the mobile terminal, the customer can select and use only the necessary functions and make the production cost cheaper. In addition to making satisfaction a priority, the objective is to ensure that all functions intended to be implemented in the present invention are executed completely.

An apparatus for achieving the above object includes an indoor signal generator for transmitting a mode signal in an intermittent place, an entrance signal generator for transmitting an entrance signal from an inside of an entrance, and an exit signal generator for generating an exit signal from an outside of an entrance; It is characterized in that it comprises a portable terminal 50 with a built-in wireless receiver for receiving and detecting this signal to automatically convert the operation mode.

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

As shown in FIG. 1, the basic configuration of the present invention includes a portable terminal 50 in which the indoor signal generator 10, the entrance signal generator 20, the exit signal generator 30, and the wireless receiver 40 are embedded. It is becoming.

The indoor signal generator 10 for indoor installation transmits a mode signal for controlling the operation of the portable terminal. The mode signal converts the operation of the portable terminal to general vibration conversion, reception vibration conversion, call blocking, data transmission prohibition, video blocking, and bell. It is a control signal for changing the ringing, normal operation, and composite signal (eg, image blocking and data transmission prohibited) mode in which the above modes are combined.

The transmission signal of the entrance signal generator 20 is a signal informing the entrance, and the transmission signal of the exit signal generator 30 is the signal informing the exit. The radio receiver 40 detects each mode signal and transmits the signal to the controller of the portable terminal.

Even if the mode signal is received, the controller operates normally if it does not receive the entrance signal.It operates according to each signal only when the entrance and mode signals are received, and after receiving the exit signal, the controller operates normally even if the mode signal is received. Ensure that portable terminals outside the installation site are not affected by the indoor signal generator. However, if the entrance, exit and mode signals are present at the same time, they may cause mutual interference, and thus the entrance, exit and mode signals are transmitted by TDM (time division method) to avoid mutual interference.

When the wireless receiver is always on, the battery consumption of the mobile terminal is increased, so most of the time is turned off and the battery is turned on for a short time only during the inspection, thus reducing the battery consumption. T time (for example, 40ms), each of which consists of a synchronization signal (start signal), guard signal (Low), code signal (entry, exit, mode) and stop signal (Low). Send out to have a pattern. This is shown schematically in FIG. 2.

3 shows the configuration of the signal generator.

Here, a key input from the key input unit 11 requires a unique input key for each operation mode, and the controller 12 receives a signal from the key input unit 11 to a mode currently received by the display device 13. In order to avoid entering and leaving the room and interfering with the mode signal (refer to FIG. 4), it is divided and sent as a time division method. This is shown in FIG.

The mode signal output from the controller 12 is digitally modulated by the digital modulator 14 and then converted into a high frequency by the RF converter 15 and amplified by the RF amplifier 16. In addition, the attenuator 17 is provided so that the output can be adjusted according to the area of the installation place, and the attenuation range is adjusted through the switch unit 18 so that the RF output transmitted to the antenna 19 is adjusted. As above, the entrance and exit signals output from the controller 12 are also digital modulators 21 and 31, RF converters 22 and 32, RF amplifiers 23 and 33, attenuators 24 and 34, It is output via RF through the switch unit 25 and 35 and the antennas 26 and 36, and the amount of output is also adjusted.

The input and exit signals are regulated by the RF in case the entrances are of different sizes. In addition, even if there is no entrance or exit, there is a door check key on the key input unit 11 so as not to interfere with the operation. You can make a decision.

If the entrance and exit signals are not needed, only the mode signal is transmitted repeatedly. This is shown in FIG.

However, even if there is an entrance check and no such signal, the mode signal code is output differently so that if there is no entrance check, the mode conversion is performed immediately upon receiving the mode signal, and if there is an entrance check, after the entrance signal is received. Mode conversion is performed only when a mode signal is received. The synchronization and code signals have a constant pattern as shown in FIG. 2 so that the radio receiver is turned off for a predetermined time and then turned on intermittently to be searched.

As an example of this, first, the sync signal and the code signal are defined as 5 bit codes, and a certain bit pattern is repeated. The rules for obtaining this are as follows.

It is 110 if it is reversed from 0 to 1 or 1 to 0, and if it is 0 that is not inverted, it is 01 and if it is 1 that is not inverted, it is 10.

Assuming the initial bit of the 5bit code is 0, the number of consecutive 1s in the bit pattern is limited to 2, and if the last bit pattern ends with 0, 0 is added to get 1 and make 16 bits.

In the case of the exit signal, which is a 5-bit code, for example, 10100 is initially inverted from 0 to 1 and becomes 110, the second degree is inverted from 1 to 0, 110, the third degree is inverted from 0 to 1, and the fourth degree is inverted from 1 to 0. 110 is the fifth non-inverted 0, so the last bit is 0, so 1 is added to 1101101101101, and 0 is added to become 1101101101101000.

An example of the bit pattern thus obtained is shown in Table 1 below.

Second, the rules for obtaining another embodiment of another bit pattern are as follows.

The mode signal is classified according to the synchronization signal repeating 1 and 0 and the position where 11 is inserted once while repeating 1 and 0. And the entrance and exit signals are repeated 11 and 00 once, which is also divided into the entrance and exit signals depending on the location.

In the case of a mode signal without access check, the mode signal with access check is inverted. In this case, the number of the synchronization signal, the entrance signal, and the exit signal 1 is half of all bits (16 bits), and in the mode signal when there is an entrance check, the number of 1s is 9 bits out of 16 bits, and 0 otherwise. There are nine of the 16 bits.

The bit patterns thus obtained are shown in Table 2 below.

Through this, if the synchronization signal and the code signal are composed of the bit pattern having a certain pattern, the radio receiver can search the bit pattern in a short time.

The configuration and operation of the portable terminal incorporating the wireless receiver shown in FIG. 6 are as follows.

The portable terminal of the present invention includes a radio receiver 41 for receiving radio waves from an in / out room and an indoor signal generator, a power supply unit 42 for supplying operation power to the radio receiver, and each signal received by the radio receiver. A portable terminal controller 51 for processing an input signal from the generator, and a portable terminal circuit 52 for receiving the control signal of each signal generator processed from the portable terminal controller to limit the operation of the portable terminal.

When a mobile terminal having such a configuration first receives a sync signal and a code signal received from an antenna and is input to the controller 51 and input to the controller 51, the mobile terminal first searches for a bit pattern, and then, if there is a bit pattern, searches for a mode signal. Is converted to.

Here, the power of the wireless receiver 41 is turned on / off through the power supply 42. When the sync and code signal with a certain pattern is sent from the indoor signal, the entrance signal and the exit signal generator, the radio receiver turns off for a certain time Toff (eg 0.5 ~ 1 second) and turns on for a short time Ton (eg 20-40ms). If the pattern is searched, if there is no pattern, it is turned off for a certain time Toff. If there is a pattern, it goes to sleep1 process, which is turned off for a certain time Toff. Search for entrance, exit, and mode), go to sleep2, which is turned OFF for a certain time Toff, and then turn on for a short time Ton and repeat the process of searching for a synchronization signal. The flow of this process is shown in FIG.

In this way, the radio receiver is turned off for a long Toff and short for a ton to reduce battery consumption.

The power consumption in this case is calculated as follows.

For example, suppose the wireless receiver consumes a constant current (Icc) at a constant voltage (Vcc) and calculates power consumption when it is always on.

P = Vcc × Icc, on.

And if you calculate the power consumption when it is OFF for a certain time Toff and ON for a short time Ton

P = Vcc × Icc, on × Toff + Vcc × Icc, on × Ton / Toff + Ton.

Where Icc, off is the current flowing during OFF and Icc, on is the current flowing during ON.

P = Vcc × Icc, on × (Ton / Toff + Ton).

So Toff''Ton

P = Vcc x Icc, on x (Ton / Toff).

Therefore, the shorter the Ton time than the Toff time, the more the power consumption decreases.

When the handset controller performs the function of the handset and turns on / off the power of the wireless receiver and searches for a certain pattern, synchronization, and code signal, the handset controller is overloaded. Therefore, a separate small controller (for example, an 8-pin microcontroller) Mode detection is performed while the radio receiver is turned on and off, and the detected mode is transmitted to the mobile phone controller. This is shown in FIG. 8.

As described above, the controller 43 cuts the power of the wireless receiver through the power supply 42 for a predetermined time Toff and supplies power for a short time Ton to reduce battery consumption. If the wireless receiver detects and outputs the signal received from the antenna during the ton of power supply, the controller 43 which receives the signal determines whether the operation mode is performed by searching the sync and code signals after checking the bit pattern. The controller 51 transmits the data to the controller 51 so that the cellular phone controller changes to the corresponding mode.

On the other hand, if the user of the portable terminal quickly passes through the doorway, an error may occur that does not receive the entrance signal. In order to prevent this, when the output of the entrance signal is increased, the portable terminal outside the installation place can recognize the entrance signal, thereby reducing the output and transmitting radio waves through a plurality of antennas. This is shown in FIG.

However, even in this case, the signal of the antenna may be attenuated by mutual interference. Therefore, the input signal configuration (see FIG. 2) is separately transmitted by time division method (TDM) (see FIG. 10). For example, each of the entrance signals 1, 2, and 3 is transmitted as a signal of the same code.

Here, the controller 12 of the signal generator is divided into the entrance signals 1, 2, and 3 so as to be output as shown in FIG.

On the other hand, a method of alternately transmitting the entrance signals 1, 2, and 3 to the entrance signal section is shown in FIG. 12, which is a case where the entrance signals 1, 2, 3 are alternately transmitted for each T period. In this case, first the entrance signal 1, the exit signal, the mode signal, and then the entrance signal 2, the exit signal, the mode signal, and then the entrance signal 3, exit signal, the mode signal and then go back to the beginning It is transmitted through the entrance signal 1, exit signal, and mode signal.

On the other hand, although the exit signal may be used in the same way, since the exit signal generator is located in the outer passage of the installation site, the output can be increased in consideration of the installation location characteristic, but there is no big problem, but the same method as the entrance signal generator may be adopted.

The operation of the mobile terminal according to the operation mode will be described below with reference to FIG. 13.

The portable terminal controller turns off the radio receiver for a certain time Toff and turns it on for a short time Ton to search for a valid pattern. If not, it goes to the Sleep1 process which turns off for a certain time Toff.

In this case, the user can hear the other party's call sound by blocking the simultaneous mic output which converts the bell to vibration. The caller's voice is not transmitted, and the operation of the key indicates “yes”, “no”, “listening”, etc., and only listens to the other party's voice.

Next, check if the call blocking mode is correct, and if the power off the mobile terminal is shut down all the functions of the mobile terminal, such as call and data transmission, and the operation to check whether the data transmission prohibition mode, if it is correct text message using the mobile terminal And prohibit the transmission and reception of data and at the same time block the Internet connection, but enable the call.

Next, it checks whether it is in the video blocking mode, and if it is corrected, it prohibits the recording, storing and sending of the video using the camera, but enables the call. Ringing for 5 seconds, check if it is complex mode (blocking video and data transmission), and if it is correct, capture, save, send data and send data using text message in public places where security is required. Blocking access prevents data transmission, as well as indiscriminate TV watching and entertainment games, but allows calls.

Finally, check whether it is in the normal operation mode, and if it is correct, all the functions of the portable terminal are normally operated. This mode is used where temporary operation is temporarily necessary at the installation site (eg during breaks during a test or during a break during a concert).

After all the above steps, the process goes to Sleep2, where the radio receiver is turned OFF for a certain period of time. After a certain period of time, the receiver is turned on for a short ton again and goes to the synchronous signal inspection process and repeats the above procedure, so that the wireless receiver is turned off for a long time and turned on intermittently, thus significantly reducing the battery consumption of the mobile terminal. .

It is used to protect the privacy of the individual by developing and moving the portable signal generator described above so that an individual can carry it. At this time, the portable signal generator is operated by a battery.

14 is a picture substitute picture of the actual indoor signal generator according to the present invention Figure 15 is a picture substitute picture of the actual product of the wireless receiver equipped with a mobile phone according to the present invention.

This is a product picture that did not fail to perform the function as a result of the device of the present invention and conducted a practical test for more than one year in the field. Prevention of illegal leakage of information through a mobile terminal provided with a function to prevent the information from being illegally leaked to a mobile phone. It shows a real embodiment of the indoor signal generator of the device and the ultra-small module embedded in the existing mobile phone.

As described above, the apparatus of the present invention installs an indoor signal generator at a predetermined area or area, has an entrance and exit signal generator at an entrance and exit, detects this signal with a radio receiver, and automatically executes a mobile phone controller according to the detected signal. Mode change, which allows to select general vibration conversion, reception vibration conversion, call blocking, video blocking, data transmission prohibition and normal operation mode as needed in places where function restriction is needed, thereby limiting at least some functions In addition, it brings about the unique effect of preventing the illegal information leakage in advance.

In addition, the device of the present invention prevents errors in signal reception so that there is no disruption in function performance and minimizes battery consumption.

In addition, the present invention puts a ringing mode to easily determine whether the mobile phone possession and informs the holder of some of the limited functions, block text messages and Internet access using a mobile terminal, and also prohibits data transmission, and the general public or It can be expected to prevent the misuse of the mobile terminal, such as illegally photographed celebrities can not be abused.

The effect of the present invention is shown schematically in Table 3 below.                     

Claims (9)

An indoor signal generator 10 for transmitting a mode signal (normal operation, general vibration conversion, reception vibration conversion, call blocking, data transmission prohibited, image blocking, ringing, image blocking and data transmission prohibited signal) in the enforcement place; An entrance signal generator 20 installed inside the doorway to detect entrance of the portable terminal and sending an entrance signal to the indoor signal generator, and an exit signal of the indoor signal generator installed outside the entrance to detect exit of the portable terminal. And a portable terminal 50 having a built-in exiting signal generator 30 and a wireless receiver 40 which wirelessly receives a mode signal from the indoor signal generator and automatically converts it into an operation mode of the portable terminal. The user-selected signal is transmitted to the wireless receiver in the mobile terminal in a TDM manner so that some functions of the mobile terminal are controlled by the operation of the wireless receiver. Device for preventing illegal leakage of information through a mobile terminal. According to claim 1, The indoor signal generator 10 is a combination of a plurality of operation modes (normal operation, normal vibration conversion, reception vibration conversion, call blocking, data transmission prohibited, image blocking, ringing, image blocking and data transmission prohibited Key input unit 11 for inputting various mode keys so that each function of the operation mode selected according to the installation location characteristics is normally displayed, a controller 12 for controlling entrance and exit signals and mode signals, and a display for displaying the current mode. Device 13, digital modulator 14 for digitally modulating the mode signal output from the controller, RF converter 15 for converting this signal into high frequency, RF amplifier 16 for amplifying high frequency signal, installation Device for preventing illegal leakage of information through a portable terminal, characterized in that the structure of the switch unit 18 and the attenuator 17 to adjust the output according to the area in the place. According to claim 1, The indoor signal generator 10, the entrance signal generator 20 and the exit signal generator 30 is based on the TDM communication, but the entry and exit and mode signals to the time slot (Ton) so that the perfect communication To avoid mutual interference, and the radio receiver 40 is turned off for a certain time Toff and turned on for a short time Ton to search for a signal to reduce the battery consumption. Device for preventing the illegal leakage of information through a portable terminal characterized in that the signal transmission. According to claim 3, The indoor signal generator 10, the room signal generator 20 and the exit signal generator 30 is based on the TDM communication, each signal interval (Ton) is a synchronization signal, guard signal, entrance signal , Leaving signal, mode signal and stop signal, characterized in that the illegal leakage of information through a mobile terminal device. The method of claim 2, wherein the indoor signal generator 10 is a mode signal that does not check the entrance (normal operation, normal vibration conversion, reception vibration conversion, call blocking, data transmission prohibited, image blocking, ringing, image blocking and data transmission) And a prohibition signal), eliminating entrance and exit signal sections and repeatedly transmitting a signal composed of a synchronization signal, a guard signal, a mode signal, and a stop signal every Ton time. According to claim 1, wherein the input signal generator 20 is a digital modulator 21 for digitally modulating the input signal output from the controller 12, the RF converter 22 for converting to a high frequency, amplifying a high frequency signal Device for preventing the illegal leakage of information through the portable terminal, characterized in that the structure of the RF amplifier (23), the switch unit 25 and the attenuator 24 to adjust the output according to the installation place entrance size. According to claim 6, The signal generator 20 is a portable terminal 50, when the holder quickly enters the installation place, the signal transmitted from one of the signal generators to prevent the missing of the signal input to a plurality of transmission antennas To expand the radio wave reach range, or to generate a plurality of entrance signals, to send the entrance signal 1 to the entrance signal section, to send the entrance signal 2 to the next entrance signal section, and to send the entrance signal 3 to the next entrance signal section. Transmit other radio signals by sequentially sending different signals for each signal zone, avoiding mutual interference, or by dividing one zone signal zone Ton and sequentially transmitting signals 1, 2, 3, etc. Device for preventing the illegal leakage of information through a mobile terminal, characterized in that the transmission in a way to avoid mutual interference. The method of claim 1, wherein the leaving signal generator 30 is a digital modulator 31 for digitally modulating the leaving signal output from the controller 12, the RF converter 32 for converting to a high frequency, amplifying a high frequency signal Device for preventing illegal leakage of information through a mobile terminal, characterized in that the structure of the RF amplifier 33, the switch unit 35 and the attenuator 34 to adjust the output in accordance with the installation place entrance size. The portable signal generator is developed to be used while moving with the portable terminal 50 in which the wireless receiver 40 is built by receiving power from a portable battery for protecting personal information outside the installation place. Modes such as normal vibration conversion, incoming vibration conversion, call blocking, data transmission prohibition, video blocking, ringing, image blocking and data transmission prohibition) A key input unit 11 for inputting a key, a controller 12 for outputting entrance and exit signals and a mode signal, a display device 13 for displaying a current mode, and a digital modulator for digitally modulating the mode signal output from the controller (14), the RF converter 15 for converting the signal into high frequency, the RF amplifier 16 for amplifying the high frequency signal, the switch unit 18 and the attenuator 17 for adjusting the radio wave propagation range. The signal of the mode selected by the user among the operation modes of the portable signal generator (normal operation, general vibration, reception vibration, call blocking, data transmission prohibited, image blocking, ringing, image blocking and data transmission prohibited) A device for preventing illegal outflow of information through a portable terminal, characterized in that a part of a function of the portable terminal is controlled by the operation of the wireless receiver and transmitted to the wireless receiver in the portable terminal in a manner.

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