KR20010100417A - The portable wireless cipher transceiver - Google Patents

Abstract

The present invention relates to an ultra-compact wireless transceiver capable of sending or receiving a predetermined code or code by a group of two or more, and can be used during operation or status report without any sound during night reconnaissance and infiltration operations. Because of this, it can be usefully used, and since the frequency allocated for military use can be used, the output can be made large enough to enable communication over a distance of several km or more.

The device can also be used for police demonstrations and arrests, and for firefighters to send and receive danger signals during firefighting operations, using the Industry-Scientific-Medical (ISM) band. Communicating with a small output within mW allows the public to communicate with a designated person in advance with a designated person at a short distance of about 2 to 50 m, thereby protecting the privacy of the individual or giving a friendly feeling in communication. .

Transmitter and receiver of the present invention can allow the user to detect the sign by the flickering or vibration when receiving, can be easily attached to military helmets, military uniforms, belts or weapons, and for the general public A pager, or a pencil, a ballpoint pen, a fountain pen, a pencil case, etc., which can be easily carried, is characterized in that it can have the form of jewelry such as brooch, bracelets, watches, necklaces, and the like.

Description

The smallest portable wireless cipher transceiver {The portable wireless cipher transceiver}

Field of the Invention The present invention relates to a field of secret communication in telecommunications technology. Conventional encryption or code transceivers are mostly military and commercial large telegraphs, and recent digital communication such as on-premises wireless PBXs can be classified as such fields. Since only a ON / OFF switch transmits a simple password or a code and receives a doctor's voice without a sound by vibrating or flickering the lamp upon reception, the present invention has not yet been used. It is clearly distinguished from existing products that exchange.

The present inventor's portable ultra-compact password or code transceiver transmits a predetermined password or code by simply operating the ON / OFF switch manually by one of two or more groups, so that everyone carrying the same transceiver may not know or vibrate. It is intended to be able to recognize the intention of the sender only by blinking and designed to be as large as a fountain pen, necklace, bracelet, etc., or to have a structure that can be easily detached from a weapon or other portable device. .

Designed and manufactured for military, police, and firefighters, reliability is a top priority, and for the general public who needs to use the Industrial-Scientific-Medical (ISM) band, small size, light weight and low price should be developed. In particular, it is a technical problem of the present invention to prevent spurious radiation from occurring.

1 is a block diagram of a general portable ultra-compact wireless transceiver.

2 is a block diagram of an ultra-portable wireless transceiver for military / police / firefighters.

The portable cryptographic transceiver of the present invention can be broadly classified into two types, one of which is for military / police / firefighters that can use the allocated frequency relatively freely, and requires high quality and high reliability. For the general public to use the ISM band with an output of less than 5 mW, the price, appearance, and light weight characteristics are important.

For the general public, the oscillator of the high frequency transmitter is operated with the ON / OFF switch to generate a high frequency pulse, and the receiver receives the high frequency pulse to detect and generate the original pulse signal, and in the case of a military / police / firefighter product. Whenever the ON / OFF switch is operated instead of such a single pulse, the local oscillator is modulated by the unique number (ID) of the corresponding group, so that the receiving side does not malfunction by checking the ID even when another signal is received. You can do it. In either case, the speed of the data is very slow, so that the bandwidth of the intermediate frequency filter can be made very narrow to increase the reception sensitivity.

Military / Police / Firemanship products have a power output of 2 Watts or more and can range in distances of several kilometers or more. For the general public, other radio stations in the vicinity of 30 MHz, 440 MHz, 900 MHz, 2.4 GHz or ISM bands. By using a small output within 5 mW of the specified output, it is possible to have a communication distance of about 20 to 50 m.

In addition, this portable encryption transceiver divides a given ISM band into several channels in units of 30 to 100 kHz, so that users of different groups can communicate with each other in the vicinity, and the AM, FM, ASK, Alternatively, if the carrier is modulated and sent by the FSK method, the receiving side turns on the LED or drives the vibrator with a pulse obtained by demodulating the carrier.

Hereinafter, with reference to the accompanying drawings will be described a portable wireless crypto transceiver and its operation according to a preferred embodiment of the present invention.

1 is a configuration diagram illustrating a method for operating a general portable ultra-compact wireless transceiver according to the present invention. In the state in which the switch is not pressed, the standby mode is in the receiving mode. The high frequency signal is amplified by the amplifier and then transmitted through the antenna.In the receiving mode, the high frequency signal input through the antenna is amplified by the low noise amplifier (LNA), and then detected by the local oscillator and the demodulator and converted into a pulse signal. And drives the LED or vibrator through the control unit.

2 is a block diagram illustrating a method of operating a compact portable wireless transceiver for military / police / firefighters according to the present invention, wherein a serial number of the transceiver is serially transmitted from the central processing unit when the switch is pressed to the transmission mode. The modulator outputs the local oscillator and outputs it.In the receiving mode, the high frequency signal inputted from the antenna and amplified by the low noise amplifier (LNA) is converted into a pulse train signal through the demodulator, and then the unique number of the transceiver (ID) in the central processing unit. If it matches, it makes one pulse to make LED or vibrator operate.

The present invention allows military / police / firefighters to communicate secretly with colleagues during the night operation or in a noisy area without any noise, and in the case of the general public, Groups of people close together do not harm others, and communicate with each other in close proximity by contracted passwords. Not only can you feel friendly, but you can also avoid exposing your privacy.

The present inventors can carry the shape of a mobile phone and a pager, which is a necessity of modern people, and can easily carry a stationery such as a pencil, a ballpoint pen, a fountain pen, a pencil case, a brooch, a bracelet, a watch, a necklace, a belt It can be in the form of jewelry.

When multiple users have transceivers of the same channel, 1: n communication is possible, which makes it suitable for use as children's toys.

Claims (2)

All wireless password transceivers are designed so compact that they can be attached to a person's clothing or body to send and receive simple passwords or codes without sound. All weapons and portable goods, office equipment, home appliances, communications equipment, stationery and toys with the ability to transmit and receive simple passwords or codes without sound.