JPH09137650A - Wireless lock system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve security by a system wherein a transfer speed is changed for each transmission data and the data are transmitted as a modulated wave in the equipment wherein the data such as a code-number are transmitted by a light beam or a radio wave and unlocking is conducted on receipt of the data. SOLUTION: A code-number is transmitted from the key side and received on the lock side, and when it coincides with the number registered beforehand, a signal is outputted to a driving part of a lock so as to conduct unlocking or locking. On the occasion of transmitting this code-number, a transfer speed is changed for each one character of data sequentially according to a table and the data are transmitted in the form of a light or a radio wave modulated. In the case when the number 087 is transmitted by operating a key operating part, the transfer speed of 0 is changed to 1200bps, that of 8 to 9600bps and that of 1 to 4800bps. It is also advisable to use the light and the radio wave mixedly for each one character, in addition to the change of the transfer speed. In this case, modulating parts and demodulating parts for the light and the radio wave are provided in a transmission part and a reception part respectively. Thereby decoding and copying are made impossible. According to this constitution, safety for security can be improved.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD This invention relates to improvements in wireless lock systems.

[0002]

2. Description of the Related Art In recent years, wireless lock systems have been widely used. This system transmits data by light or radio waves from the key side, and on the door side, if the transmitted data is received and if it matches the signal value registered in advance, a signal is output to the lock drive unit to unlock the door. It is to be locked or locked.

However, in the conventional seed lock system, there is a problem that learning by hand training is easy and copying can be performed easily, as in a remote control device for home electric appliances, for example. This is largely because the data transmitted from the key side has the same transfer rate. It goes without saying that in a lock system, easy decryption or copying is a big security problem.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention
The present invention aims to provide a wireless lock system with high security, which is impossible or extremely difficult to decrypt or copy.

[0005]

That is, the present invention provides:
Data is transmitted from the key side by light rays or radio waves, and on the door lock side, if the transmitted data is received and it matches the signal value registered in advance, a signal is output to the lock drive unit to unlock or lock the door. In addition, when the data is transmitted from the key side, the secret code is transmitted at the same time, and the transfer speed of each character of the data is changed corresponding to the secret code. Related to lock system.

Further, in particular, in the above invention, the secret code is composed of a plurality of numbers having a predetermined transfer rate, and the transfer rate for each character of the data is changed in the order of arrangement of the numbers according to the number of the secret code. The present invention relates to a wireless lock system.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a mechanism on a key side which is a transmitting side showing an embodiment of the present invention, FIG. 2 is a block diagram showing a mechanism on a door lock side which is also a receiving side, and FIG. 3 is a personal identification number and data transfer. The figure which shows an example of change of speed, FIG.
FIG. 5 is a waveform diagram showing the changed data transfer rate, and FIG. 5 is a diagram comparing the data transfer time at which the transfer rate is changed by the present invention and the data transfer time at the same transfer rate.

As can be seen from the block diagram of the key side of FIG. 1 and the block diagram of the door lock side of FIG. 2, according to the present invention, data is transmitted from the key side by light rays or radio waves, and the transmitted data is received by the door lock side. If the signal value matches the signal value registered in advance, a signal is output to the lock driving unit to unlock or lock the door. That is, on the key side of FIG.
In addition, a storage device (EEPROM) in which data is input as a transmission data format, a microcomputer and a power source (here, 3V lithium battery), and necessary booster / alarm / reset unit are arranged, and the button of the key operation unit is pressed. Thus, the predetermined secret code (number) and data are transmitted as modulated light or radio waves from the transmitter.

On the side of the door lock of FIG. 2, a storage device (EEPROM), a microcomputer, a power supply (here, a commercial power supply here) in which a predetermined secret code (number) and data are input as a reception data format by an input device in the same manner as described above. ) And a door lock power unit for opening and closing the lock, light and radio waves transmitted from the key side are demodulated and digitally converted by the reception unit, and the reception format of the storage device is stored via the microcomputer. If they match, the door lock power unit is operated to unlock or lock.

The data transmission medium may be either light or radio waves. In particular, light and radio waves are mixed for each data or for each character of data such as light-radio wave-radio wave-light. May be. In this case, the transmitter on the key side and the receiver on the door lock side need a modulator and demodulator for light and radio waves, respectively, but it is extremely effective in preventing decoding and preventing copying. high.

The present invention is characterized in that, in the above-described wireless lock system, the transfer rate of each character of data is changed in accordance with the secret code transmitted from the key side. is there. A specific description will be given with reference to the diagram of FIG. That is, as an example, the secret code is composed of a plurality of numbers “087” and the transfer data is “12345”.
6 ”. As for the above-mentioned personal identification number, the transfer rate is predetermined for each number as shown in the lower table of FIG. 3, and the transfer rate for each character of the transfer data "123456" is sequentially changed in the order of arrangement of the personal identification number. It has become.

As is clear from the table on the upper side of FIG. 3, the transfer rate for each character of the transfer data "123456" is sequentially changed from the table on the lower side of FIG. Transfer data "1" 1200 bps Transfer data "2" 9600 bps Transfer data "3" 4800 bps Transfer data "4" 1200 bps Transfer data "5" 9600 bps Transfer data "6" 4800 bps The above example is for explanation This is a simplified example. The point is that the data transfer rate may be changed according to a predetermined standard depending on the secret code (number).

The data whose transfer rate is changed as shown in FIG. 3 is transmitted / received with a data length as shown in FIG.
That is, as shown in the upper part of FIG. 4, when the transmission data is the number “1”, in the case of the asynchronous system, the data number “1” divided into 8 bits is digitized every b1 seconds after waiting a1 seconds. The signal “0-0-1-1-0-0-0-1” is transferred. The transfer rate of this data number "1" is 120
Since it is 0 bps, b1 is 1/1200 second, and a
1 is half of b1 and is 1/2400 seconds.

Similarly, when the transmission data number "2" on the lower side of FIG. 4 is set, the transfer rate is changed to 9600 bps, so the data number "2" divided into 8 bits.
The digitized signal of "0-0-1-1-0-0-1
“-0” means a2 seconds (b2 × 1/2 = 1/19200 seconds)
Waiting, it is transferred every b2 seconds (1/9600 seconds). Similarly, when the transfer data is "3", a3 seconds is 1/9
600 seconds, b3 seconds 1/4800 seconds, when transfer data is "4", a4 seconds is 1/2400 seconds, b4 seconds is 1/1200.
Second, a5 second when the transfer data is "5" is 1/19200
Seconds, b5 seconds are 1/9600 seconds, when transfer data is "6", a6 seconds are 1/9600 seconds and b6 seconds are 1/4800 seconds.

On the side of the door lock, which is the receiving side, similarly, the data is sampled (sampled) based on the transfer rate changed by the secret code to obtain the received data. As described above, the microcomputer outputs a signal to the power unit for unlocking and locking if the code matches the data format code on the receiving side.

FIG. 5A shows the data transfer time when the data numbers "1""2""3""4""5""6" are transferred according to the present invention. Indicates that each data digit is transferred at the same transfer rate. As can be understood from this comparison, since the transfer rate for each character of each data is changed, it is impossible or extremely difficult to decrypt the key data.

[0017]

As described in detail above, according to the present invention, the secret code is transmitted at the same time when the data is transmitted from the key side, and the transfer speed of each character of the data corresponding to the secret code is increased. Since it is designed to be changed, it is possible to provide a wireless lock system which is highly safe in terms of security because it is impossible or extremely difficult to copy by decryption or manual training as in the past.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a mechanism on a key side which is a transmitting side showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a mechanism on the door lock side which is also the receiving side.

FIG. 3 is a diagram showing an example of changing a personal identification number and a data transfer rate.

FIG. 4 is a waveform chart showing a transfer rate of changed data.

FIG. 5 is a diagram comparing the transfer time of data whose transfer speed is changed by the present invention and the data transfer time of the same transfer speed.

Front page continuation (72) Inventor Keigo Yoshida 1-22-2 Sakae, Naka-ku, Nagoya Lions Hotel Nagoya No. 225 Katie Sea Co., Ltd. (72) Inventor Tatsuro Uchida 1-78 Fukuike, Tenpaku-ku, Nagoya

Claims (2)

[Claims] 1. A data is transmitted from a key side by a light beam or a radio wave, and the door lock side receives the transmission data and outputs a signal to a lock driving unit if the signal value matches a pre-registered signal value. When the data is transmitted from the key side, the secret code is transmitted at the same time, and the transfer speed of each character of the data is changed according to the secret code. A wireless lock system featuring. 2. The secret code according to claim 1, wherein the secret code is composed of a plurality of numbers whose transfer rates are predetermined, and the transfer rate of each character of the data is changed in the order of arrangement of the numbers according to the number of the secret code. Wireless lock system.