KR20030081561A - An equipment to prohibit from taking a photograph by cameras - Google Patents

Abstract

PURPOSE: A device for preventing image photographing is provided to install an indoor generating device for emitting specific light in a security place, and not to store or transmit an image when a camera receives an image signal, thereby prohibiting storage and transmission of the image signal. CONSTITUTION: An optical signal generator generates an optical pulse. A camera built-in cellular phone has a function of prohibiting transmission and storage of image information when a camera recognizes the optical pulse by receiving an optical signal. A light emitting element(117) continuously emits light by a high voltage generating circuit(116). A motor(112) is driven by a motor driving circuit(111). A disk(114) has a slot(115) as rotating on an axis, being connected to the motor(112).

Description

An equipment to prohibit from taking a photograph by cameras}

With the spread of video cameras, IMT2000s, and general photo cameras, industrial and military facilities that need to be secured, and materials that are not intended to be released, are becoming more serious, and sneak cameras that capture personal privacy have become social problems. It is an object of the present invention to provide a system that prevents the imaging and transmission of the image in the limited area.

In order to prevent the leakage of video information, indoor signal generators that generate radio waves are installed in places where security is required, and a wireless reception module that receives them is embedded in the portable mobile communication device to prohibit video transmission according to the signal of the indoor signal generator. There is a way. However, this method has a problem in that the wireless receiving module must be separately embedded in the mobile phone.

According to the present invention, there is a camera in order to capture an image without using a radio wave, so that information is transmitted through a camera without using a separate wireless receiving module.

1 is an overall configuration diagram of an image capture prevention device

2 is a block diagram of an optical signal generator 1

3 is a block diagram of an optical signal generator 2

4 is a waveform of light output from an optical signal generator

5 is a block diagram of a mobile phone or video camera incorporating a camera;

The overall configuration diagram of the present invention is shown in FIG.

When the optical pulse signal is emitted from the optical signal generator 100 installed indoors, the optical pulse signal is input through the mobile phone 200 and the camera 300 embedded in the video camera. It prevents image information leakage by prohibiting image transmission and storage. It should be noted that when the light pulse is fired, the human eye flashes, so the human eye should be able to detect a high speed but the width of the pulse should be short. In this way, since the human eye recognizes the average power, it is impossible to recognize the optical pulse and at the same time prevent the leakage of the image information.

Figures 2 and 3 show block diagrams of the optical signal generator. Figure 2 shows the electronic switching method and Figure 3 shows the rotating disk with slots.

First, the operation of Figure 2 will be described.

When a pulse is emitted from a digital circuit or a processor (CPU) 101, the pulse drives the high voltage supplied from the high voltage generating circuit 103 to the high voltage switching circuit 102 so that a high voltage pulse is applied to the light emitting element 104 to emit light. The device 104 emits light having a very short width for a short time (Ton) as shown in Fig. 4 and does not emit light for a long time (Toff). In this case, the light emitting device should use a light emitting device having a fast ON / OFF time.

In Figure 3, the light emitting device emits light for a short time by rotating a disk with slots while still emitting light. The operation is as follows.

The high voltage output from the high voltage generating circuit 116 is continuously supplied to the light emitting device 117 so that the light emitting device 117 continuously emits light and the motor continues to rotate by the motor driving circuit 111. The connected disk 114 also continues to rotate. At this time, the light is emitted by the slot 115 in the disc 114 to generate an optical pulse as shown in FIG. The slot period corresponds to Ton in Figure 4, and the slot-free period corresponds to Toff.

Meanwhile, Figure 5 shows a block diagram of a mobile phone or video camera with a built-in camera. The operation is as follows.

The video signal input through the camera 300 compares with the reference voltages distributed by the resistors Rl and R2 and outputs a high pulse in the comparator when the input video signal exceeds the reference voltage. If this digital signal is determined by the processor (CPU) 202 and periodically coincides with the signal generated by the optical signal generator, it is determined to be in the information leakage prohibition area and the switch (or multiplexer: 203) is controlled to control the video signal. To prevent transmission to the cellular phone transmitter or recorder (videotape or memory) 204.

The light generated by the optical signal generator may be white light or red light, and light of different colors may be selected. The use of special colors (Red, Green, Blue) prevents mobile phones from being affected outdoors. For example, when using red light, blue or cyan colors are used to prevent the influence of mobile phones outdoors. What is necessary is just to use glass (for example, glass with cellophane paper). In addition, in the case of using colored light, especially red light, when transmitting through a mobile phone or a video camera, the red light appears at the time of reception.

With the spread of video cameras, IMT2000 and general photo cameras, it is effective to prevent leakage of industrial and military facilities that need to be secured, and materials that do not want to be disclosed and to expose personal privacy.

Claims (5)

As shown in Fig. 1, when the optical signal generator 100 and the optical signal are received by the camera 300 and the optical pulse is recognized, the camera-integrated mobile phone 200 and the video having the function of prohibiting the transmission and storage of image information are shown. System that prevents leakage of video information by configuring camera As shown in Fig. 2, a high voltage generation circuit 103 for generating a high voltage, a digital circuit or processor 101 for generating a pulse signal, a high voltage switching circuit 102 for switching the high voltage by the pulse signal, and the high voltage Optical signal generator consisting of a light emitting element 104 for emitting an optical pulse in accordance with the pulse voltage output from the switching circuit As shown in Fig. 3, the light emitting device 117 continuously emits light by the high voltage generating circuit 116 generating the high voltage, the motor 112 driven by the motor driving circuit 111, and the axis connected to the motor. Optical signal generator consisting of a disk 114 having a slot 115 and rotates to emit an optical pulse As shown in Fig. 5, the video signal from the camera 300 is compared with the reference voltage, and the comparator 201 outputs a high value when the reference voltage is greater than the reference voltage and a low value when the reference voltage is less than the reference voltage. A mobile phone or video camera which controls the transmission or recording of a video signal by a processor (202) for determining whether an optical pulse exists and a switch (or multiplexer 203) turned on / off by the processor. In order to minimize the effect of the mobile phone in the outdoor paragraph 1 to prevent the light from leaking to the outside using a light source of a certain colored light (for example, red light) and colored glass to prevent the glass from passing through the specific colored light (E.g. blue or cyan)