WO2007147307A1

WO2007147307A1 - A directivity wireless input device and a security input system with the device

Info

Publication number: WO2007147307A1
Application number: PCT/CN2007/000302
Authority: WO
Inventors: Chiajung Chang; Junyu Wen; Jiaming Zhuang
Original assignee: Chiajung Chang; Junyu Wen; Jiaming Zhuang
Priority date: 2006-06-13
Filing date: 2007-01-26
Publication date: 2007-12-27
Also published as: CN1862602A

Abstract

A directivity wireless input device and a security input system with the device include: modulating the lightening mode of the directivity wireless input device with a lightening cross section which is farther less than the projection distance and a lightening unit transmits a light beam which can be distinguished by detection device when it sends the light. While several users hold different input devices with different lightening modes, the system can distinguish identity of each user and accept his instruction according to the pre-authorization qualification.

Description

Directional wireless input device and safety input system using the same

Technical field:

The present invention relates to an input device, and more particularly to a directional wireless input device and a security input system to which the device is applied.

Background technique:

A general automated access control system typically includes an input device for entering password or authentication data and a control device that receives identity authentication data and analyzes whether the party is authorized. More common input devices include a push keyboard as shown in Figure 1, or a remote control switch as shown in Figure 2.

The automatic access control system shown in Fig. 1 is provided with a keyboard 10 at the entrance of the building. The entrant presses a predetermined button on the numeric keypad 10 to transmit a signal to the control device 12, and the control device 12 determines whether the input signal is correct. Then, the command driving device 14 opens the door; when there are many people entering and exiting, the pressing button ^ is often seen; 10 ft frequently uses the number on the button to mark the writing wear, on the contrary, the unused button number is intact, resulting in an unrelated third party The approximate composition of the password can be easily guessed, thus losing complete confidentiality. In particular, when each household uses the same number to enter and exit, this password will become more widely known, for example, when renters rent out.

In contrast, the remote safety lock of the car is generally shown in FIG. 2, and the wireless remote controller 20 is used as an output device to transmit a signal according to the built-in reservation frequency. When the user presses the button 200 on the surface of the remote controller 20, The control device in the remote controller 20, that is, the driving transmitter, emits radio waves according to a preset frequency, and transmits the signals to the receiver 22 installed in the car 2 to perform operations such as locking, unlocking or starting; however, due to such signals The launch mode is not directional, and any third party can receive the signal by side or nearby to copy the remote control. Therefore, the input device also has security concerns that cannot be compensated for. In addition, remote control Once the device is lost, the picker can also take control of the master. The remote control and the receiver cannot distinguish between the operator and the real owner.

When there are a large number of people who need to be authorized, for example, an office building with thousands of office workers, at present, for example, an access card is used, and the card is built with an induction coil, and the card is swiped when the person passes through the sensor, so that the signal is sent by the sensor. The induction coil of the access card is enabled to activate the built-in chip, so that the built-in chip of the access control card reversely emits a predetermined weak electromagnetic wave signal for the sensor to recognize the identity of the card to confirm whether it is authorized to enter. However, if the cardholder loses his or her card, the picked up person will not be discovered by the system and will still be able to enter the system.

In other words, the above-mentioned prior art is only able to prevent the gentleman from invading the professional; on the contrary, the intentional person can easily invade without even being too high professional. How to effectively identify the identity of the input device, to avoid the input device being used, is a subject worthy of further study.

Summary of the invention:

Accordingly, one of the technical problems to be solved by the present invention is to provide a directional wireless input device in which an output signal is not understood by a bystander.

Another technical problem to be solved by the present invention is to provide a directional wireless input device in which an output signal cannot be stolen.

Still another technical problem to be solved by the present invention is to provide an identifiable directional wireless input device.

Another technical problem to be solved by the present invention is to provide a secure input system that can distinguish the identity of each user. - A further technical problem to be solved by the present invention is to provide a secure input system that can recognize a truly authorized person.

According to the present invention, a directional wireless input device is provided for directional input of a narrow-band directional optical signal to a sensor, the input device comprising: a casing; a real-time lighting unit for outputting the narrow-band directional optical signal, causing the emitted beam to have a diverging cross-sectional dimension that is much smaller than a projection distance thereof, and a set of a specific encoding frequency signal provided in the casing Driving the real-time lighting unit to emit the timing control unit of the narrow-band directional optical signal according to the specific frequency signal.

The pointing wireless input device provided in accordance with the present invention also has the following additional technical features - the input device further includes an encoded memory unit for storing the particular encoded frequency signal.

The control unit includes a code adjustment component for selecting to adjust the encoding of the particular coded frequency signal.

The set of specific code frequency signals includes a plurality of coded frequency signals different from each other, and the input device further includes a plurality of press keys disposed on the surface of the casing and respectively corresponding to the coded frequency signals different from each other.

The light emitting unit is a light emitting diode.

A safety input system according to the present invention includes: a detection module and a plurality of directional wireless input devices for directing input of a narrow-band directional optical signal to the detection module, each input device comprising: a casing a real-time lighting unit disposed in the casing for outputting the narrow-band directional optical signal; and a set in the casing to provide a specific encoding frequency signal to drive the real-time lighting unit And a timing control unit that issues the narrow-band directional optical signal according to the specific frequency signal; and the specific coded frequency signals of the respective input devices are different from each other.

The safety input system provided in accordance with the present invention also has the following subsidiary technical features: In a preferred embodiment of the invention, the detection module includes a plurality of sensors. In another preferred embodiment of the invention, the detection module includes an active surface for illumination by the input device and an image capture device facing the active surface.

The light beams emitted by the light emitting units of each of the input devices respectively have a center wavelength different from each other. According to the pointing line input device and the safety input system provided by the present invention, since the light beam emitted by the light emitting unit has directivity, and the frequency of the specific coded frequency signal is much higher than the human visual perception range, even if the third party stands by, it is fundamental The output signal cannot be obtained by the naked eye or the basic testing equipment, and cannot be easily stolen; and there is no substantial contact between the input device and the sensor, there is no obvious sign on the sensor, and the safety is greatly improved. Secondly, the input codes of each authorized person can be adjusted to be different from each other. From the system side, it is easy to distinguish who is coming, and the data such as in and out can be completely recorded. Once again, the system can further divide the sensor into multiple detection zones and send each accessor an access code with different click order. Even if the input device is lost, no one can learn the access code and cannot enter the identity. Solve all the technical problems of safety identification mentioned above.

BRIEF DESCRIPTION OF THE DRAWINGS - Figure 1 is a block diagram showing the structure of a conventional access control security system;

2 is a schematic diagram showing the relationship between an existing vehicle and a remote controller;

Figure 3 is a block diagram showing an embodiment of the first device of the input device of the present invention;

4 is a perspective view of a first preferred embodiment of the safety input system of the present invention; FIG. 5 is a timing diagram of driving signals of each input device in the safety input system of the preferred embodiment shown in FIG. 4, illustrating differences in driving signals of different input devices; Figure 6 is a schematic structural view of a second preferred embodiment of the input device of the present invention;

Figure 7 is a schematic diagram showing the wavelength of the illuminating beam of the light-emitting unit of each input device in the safety input system of the preferred embodiment shown in Figure 6;

Figure 8 is a block diagram showing the structure of a third preferred embodiment of the input device of the present invention;

- Figure 9 is a perspective view of a second preferred embodiment of a safety input system to which the input device of Figure 8 is applied;

Figure 10 is a perspective view of a third preferred embodiment of the safety input system of the present invention. [Main component symbol description]

2...car 3, 3", 3"'... input device 4, 4", 4,,,... detection module 10... keyboard

12...control device 14...drive unit

20...remote control 22...receiver

200, 300, 300", 300,,,... by 30...shell

32, 32', 32^··Light-emitting diodes 34, 34', 34"... control unit

36, 36' ...memory unit 40...sensor

40,,,...camera 42' "...partition

302, 302, ... switch 340' ... microprocessor

342' ... toggle switch

BEST MODE FOR CARRYING OUT THE INVENTION The foregoing and other technical contents, features and advantages of the present invention will become more apparent from the detailed description of the preferred embodiments illustrated in the accompanying drawings.

Referring to Figures 3 and 4, as a first preferred embodiment of the directional wireless input device 3 of the present invention, for example, a light-emitting diode 32 is used as a light-emitting element, when a user presses a button 300 on the surface of the housing 30 of the input device 3, A switch 302 in the circuit is turned on, and the LED 32 is driven by a timing control unit 34 to emit a series of bright and dark optical signals according to a specific coded frequency signal stored by the memory unit 36. Since the divergence angle of the light beam emitted by the LED is narrow, the emitted beam divergence cross-sectional dimension is much smaller than its projection distance, so it is called a directional optical signal; plus it can follow the driving signal in real time to produce rapid light and dark changes. The rate of change is much higher than the perceived frequency of the human eye, so that even if the illuminating beam of the illuminating unit hides completely different light and dark codes, and can be clearly detected by the sensor, it can still completely obscure the bystander of the naked eye. . Correspondingly, the detection module 4 of the preferred embodiment is provided with a plurality of sensors 40. When the illumination beam of the input device 3 is directed to a sensor such as the indicator 8, the sensor will output a detection signal to the control device 12 until After the password sequence is completely input, the control device 12 instructs the drive device 14 to perform a corresponding operation such as opening the door according to the prior art. Therefore, the authority As long as different codes are programmed in the memory unit of each input device, the input devices with the same appearance can be output as shown in Fig. 5, which can be clearly distinguished by the naked eye, but the sensor can clearly recognize the optical signal. Of course, in order to clearly distinguish the origin of the optical signal of the output, the code sequence can specifically output an enhanced signal at the beginning of the signal. Since there is no substantial contact between the input device 3 and the sensor 40, there is no problem of damaging the surface of the detection module 4 at all.

Of course, as is easily understood by those skilled in the art, the encoding of each input device itself does not have to be unchanged through programming. As shown in the second preferred embodiment of the present invention, the control unit 34' is deviated. The processor 340' may further include a toggle switch 342' as a code adjustment component, and reserve a plurality of group codes in advance in the memory unit 36'. As long as the user and the system manager reach a tacit agreement, the toggle switch can be adjusted by itself. 342' to the different encoding positions, even for the same input device, you can switch the encoding frequency day by day and output different optical signals. Even if the input device is lost, you can't guess the correct encoding today. Further, although the specific toggle switches are listed here, for the operation of the computer, if it is changed to the programmatic selection code, the difficulty of guessing by outsiders can be increased.

In addition, for the system administrator, when the number of people to be controlled is small, and for the sake of simplifying management, according to the current technology, multiple input devices can also be included, and each input device adopts a main light-emitting frequency as shown in FIG. A light-emitting unit having a difference in center wavelength from each other is distinguished by a difference in center wavelength of the emitted light beam. Since the wavelength range of the beam emitted by the LED is quite limited from the center wavelength, the half-intensity wave bandwidth is only about 50 nm, so it can be called a narrow-band source.

If you want to further improve the security, you can also consider the scheme shown in Figures 8 and 9: Directly design the switch 302 of the input device to be a plurality of buttons 300 of the prior art 0 to 9, for example, not only the input device; The T has a plurality of buttons, and the test module 4" also has a plurality of sensors, and the user can arrange and combine the buttons themselves, for example, the "1" button in the button 300" is pressed every month, eleven, and twenty-one. The illumination unit 32 is driven by the control unit 34 to correspond to "1" The coded frequency of the key illuminates, and each sensor is illuminated to input a specific password; 2. On the 12th and 22nd, the "2" key is pressed to input the password; and so on, so that each button 300 of the input device 3""Being pressed in turn, even if someone else detects this input device 3", it is impossible to obtain any clue from the writing condition of the button 300".

In addition, as can be easily understood by the prior art, the above detection module is not necessarily provided at a position to be illuminated by the input device, and can also be shown on the wall only as shown in the third preferred embodiment of the present invention. a partition 42' is used as a target, and for example, a camera 40"' that faces the compartment 42"' is used as a sensor; in other words, although the wall surface is virtually empty except for the blank effect surface, The positioned image capturing device cooperates with the active surface to form a detecting module 4''', thereby obtaining an input signal generated by the operator pressing the button 300' of the input device 3', and determining the identity of the operator accordingly Of course, the detecting module can also adopt, for example, a combination of a display screen and an image capturing device, and allows a plurality of people to hold a dedicated input device 3' to perform even voting, etc., so that it is true that other people have no knowledge. Effectively record the opinions of each person. ' ' According to the above, the input device can be used to wirelessly and directionalally input data to a system to correctly detect the operator's body. Not only can the process not be stolen, can not be recognized by the naked eye, and there is no sign of any hardware to ensure that each person's identity is not easily counterfeited; and the complex connection between the input device and the detection module ensures that even the input device is lost. The picker is also unable to crack, and solves the technical problems of various aspects to be solved by the present invention in one fell swoop.

The above-described preferred embodiments are merely illustrative of the invention and are not intended to limit the invention. A person skilled in the art can make various modifications and changes without departing from the spirit and scope of the invention, and all equivalent technical solutions are within the scope of the invention.

Claims

Claim

A directional wireless input device for directional input of a narrowband directional optical signal to a sensor, the input device comprising:

a casing;

a real-time light-emitting unit disposed in the casing for outputting the narrow-band directional optical signal such that a diverging cross-sectional dimension of the emitted light beam is much smaller than a projection distance thereof; and a set in the casing, providing a set a specific encoding frequency signal that drives the real-time lighting unit to emit a timing control unit of the narrow-band directional optical signal according to the specific frequency signal.

The directional wireless input device according to claim 1, further comprising: an encoding memory unit for storing said specific encoded frequency signal. ■

The directional wireless input device according to claim 2, wherein: ???said control unit comprises a coded element for selecting and adjusting the code of said specific code frequency signal.

The directional wireless input device according to claim 2, wherein the set of specific coded frequency signals comprises a plurality of coded frequency signals different from each other, and the input device further comprises a plurality of surfaces disposed on the casing And corresponding to the pressing keys of the different encoding frequency signals that are different from each other.

The directional wireless input device according to claim 1, wherein the light emitting unit is a light emitting diode.

6. A safety input system, including:

a detection module; and

a plurality of directional wireless input devices for directional input of a narrowband directional optical signal to the detection module, respectively comprising - a casing;

a real-time lighting unit for outputting the narrow-band directional optical signal in the casing; and

a timing control unit disposed in the casing to provide a set of specific code frequency signals for driving the real-time lighting unit to emit the narrow-band directional optical signal according to the specific frequency signal;

And the specific code frequency signals of the respective input devices are different from each other.

7. A safety input system according to claim 6 wherein: said detection module comprises a plurality of sensors.

8. The security input system of claim 6 wherein: said detection module includes an active surface for illumination by said input device and an image capture device for said active surface.

The safety transmission system according to claim 6, wherein the light beams emitted from the light-emitting units of each of the input devices respectively have a center wavelength different from each other.