CN105353891A - Mechanical dynamic password peep prevention keyboard - Google Patents

Abstract

The invention provides a mechanical dynamic password peep prevention keyboard. The keyboard comprises a PCB, keys located on the PCB, a break code liquid crystal display screen located on each key, and a peep prevention layer located on the break code liquid crystal display screen. The break code liquid crystal display screen located on each key is used for dynamically displaying key values of each key; and the peep prevention layer is used for making the key values of the break code liquid crystal display screen on each key only visible in a certain angle and become invisible when the angle reaches a certain fixed value.

Description

A kind of mechanical type dynamic password peep preventive keyboard

Technical field

The application relates to a kind of keyboard, particularly relates to a kind of mechanical type dynamic password peep preventive keyboard.

Background technology

At present, keyboard has become a kind of most important computer external input equipment, along with the rise day by day of ecommerce, keyboard is not only for completing normal text event detection, also more and more be used as cipher input, be widely used in the every field of society, as: the financial fields such as bank, stock, ecommerce.

Existing cipher inputting keyboard, has two kinds usually: one is mechanical keyboard, as: the keyboard in POS, ATM; Another kind is touch control keyboard common in recent years.But as cipher input, the confidentiality of existing keyboard is poor.Existing keyboard has mechanical keyboard and dynamic keyboard usually, but both there is certain defect: mechanical keyboard, major defect is that the key assignments of each key mapping of keyboard is fixed, such as general used numeric keypad 1, as shown in Figure 1, the whole world that puts in order of its numeral " 0-9 " is unified, such result is, user is when inputting password, some prepared observers can analyze password or the data of user's input to the operation of each key mapping on keyboard by observation user, even if keyboard user has a mind to block when inputting password, some lawless persons can by special processing mode some features by staying during pressing keys, as pointed the sweat of secretion, which got button by special processing mode to be pressed, likely password is guessed right by analyzing and guessing, dynamic keyboard, is generally used in dynamic display keyboard on touch-screen, when using at every turn, by certain algorithm, the keyboard that dynamic generation arrangement mode is different, but the sensitivity of touch screen can reduce along with increasing of access times, and the validity of the input of password is greatly reduced.

Summary of the invention

In view of this, the application provides a kind of mechanical type dynamic password peep preventive keyboard, comprising: printing board PCB, the button be positioned on PCB, the peep-proof layer being positioned at the short in size LCDs on each button and being positioned in short in size LCDs;

The described short in size LCDs be positioned on each button, for dynamically showing the key assignments of each button;

Described peep-proof layer, the key assignments being provided for the short in size LCDs on each button is only visual in certain angle, and it is then not visible that angle reaches certain fixed value.

In the application one specific embodiment, described PCB comprises microcontroller, described microcontroller comprises button display module; Described button display control module, for the content shown in the short in size LCDs that arranges under controlling each button.

In the application one specific embodiment, described keyboard also comprises adjustment rack, under being arranged on peep-proof layer, for adjusting the visible angle of peep-proof layer, to ensure that in the safe range except importer place, other people are invisible.

In the application one specific embodiment, described microcontroller also comprises Angle ambiguity module, Angle ambiguity module is connected with adjustment rack; Described Angle ambiguity module, obtains optimal visibility angle for adjusting adjustment rack to make peep-proof layer 8.

In the application one specific embodiment, the account form that described Angle ambiguity module calculates described optimal visibility angle is:

Wherein $\mathrm{\θ}=arcsin\left(\frac{2\mathrm{\π}}{\∂}x\right);$

for optical wavelength, x is the current planar offset of peep-proof layer.

In the application one specific embodiment, the adjustment angle of described adjustment rack is θ-θ ₀, θ ₀for peep-proof layer current visible angle.

From above technical scheme, the dynamic password of mechanical type disclosed in the application peep preventive keyboard, by the key arrangement of dynamic conditioning machinery keyboard and by arranging peep-proof layer on button, avoid the peep of cipher of user when inputting, drastically increase security, turn avoid shorter defect in the serviceable life of dynamic touch formula dummy keyboard.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is existing keyboard arrangement schematic diagram;

Fig. 2 is the structural representation of the printed circuit board (PCB) of keyboard in the application;

Fig. 3 is the section of structure of button on keyboard in the application.

Embodiment

This application discloses a kind of mechanical type dynamic password peep preventive keyboard, by the setting on change button and the refraction angle changing keyboard glazed thread, to realize avoiding person of peeping stay the identification of biological characteristic on keyboard to during input and peep to obtain password.

Certainly, the arbitrary technical scheme implementing the application must not necessarily need to reach above all advantages simultaneously.

Technical scheme in the application is understood better in order to make those skilled in the art, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain, all should belong to the scope of the application's protection.

The application's specific implementation is further illustrated below in conjunction with illustrations.

Each button of mechanical keyboard increases little short in size LCDs, when each prompting consumer inputs password, ten key all can realize different random alignment by special algorithm, even if get which button like this to press the risk also not having password and reveal.

As shown in Figures 2 and 3, the short in size LCDs 7 arranged under each button, by being connected with the microcontroller 3 on PCB2, comprises button display control module 4 in microcontroller 3, for the content shown in the short in size LCDs that arranges under controlling each button.

Button display control module 4, the key assignments of each short in size display screen under N number of button on supervisory keyboard, the order arranged by the display position of the key assignments to the N number of button of keyboard carries out kinetic energy and then the press key contents of short in size display screen display under controlling N number of button of random variation.

Such as: to the key mapping of button N number of on keyboard, Stochastic choice is carried out to the key assignments of first button, namely Stochastic choice key assignments as this button from N number of key assignments, the key assignments of selection is passed to short in size display screen drive chip, and then controls the displaying contents of short in size display screen under this button; Then, Stochastic choice is carried out to the key assignments of second button, namely Stochastic choice key assignments as this button from N-1 remaining key assignments, passes to short in size display screen drive chip by the key assignments of selection, and then controls the displaying contents of short in size display screen under this button; By that analogy, until N number of button selects 1 only remaining key assignments as the key assignments of this key.Like this, have the mode that N number of key assignments carries out random alignment kind.

By the way, realized the dynamic change of mechanical keyboard button by random alignment mode, and then reduce the possibility of input content leakage.

Preferably, in order to reduce the possibility that password is revealed further, the application increases one deck peep-proof layer 8 further on each button 6 having increased little short in size LCDs 7.After adding peep-proof layer 8, the content in the short in size LCDs 7 on button 6 is only visual in certain angle, and it is then not visible that angle reaches certain fixed value, even if block without hand, people aside also can not see that the numeral on button is how many.

As shown in Figure 2, keyboard comprises printed circuit board (PCB) (PCB) 2, be provided with N number of button 6 thereon, each button 6 is provided with short in size LCDs 7, short in size LCDs 7 is provided with peep-proof layer 8.Peep-proof layer 8 can adopt material light being played to refraction effect, such as: polarized material.

Preferably, in order to reach best peep-proof effect, can divide at peep-proof layer 8 and putting angular adjustment frame 9, adjustment rack 9 for adjusting the visible angle of peep-proof layer 8, to ensure that in the safe range except importer place, other people are invisible.

Adjustment rack 9 is connected with the Angle ambiguity module 5 in microcontroller on PCB2 3, and Angle ambiguity module 5 obtains optimal visibility angle θ by adjusting adjustment rack 9 according to calculating to make peep-proof layer 8.

The account form of Angle ambiguity module 5 is:

$\mathrm{\θ}=arcsin\left(\frac{2\mathrm{\π}}{\∂}x\right)$

Wherein, for optical wavelength, x is the current planar offset of peep-proof layer 8, θ ₀for the current visible angle of peep-proof layer 8.

Therefore, Angle ambiguity module 5 makes the visible angle of peep-proof layer 8 adjust (θ-θ again by adjustment rack 9 ₀).

It will be understood by those skilled in the art that the embodiment of the application can be provided as method, device (equipment) or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.

The application describes with reference to according to the process flow diagram of the method for the embodiment of the present application, device (equipment) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.

These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.

Although described the preferred embodiment of the application, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.

Claims (6)

1. a mechanical type dynamic password peep preventive keyboard, comprising printing board PCB, the button be positioned on PCB, the peep-proof layer that is positioned at the short in size LCDs on each button and is positioned in short in size LCDs;

The described short in size LCDs be positioned on each button, for dynamically showing the key assignments of each button;

Described peep-proof layer, the key assignments being provided for the short in size LCDs on each button is only visual in certain angle, and it is then not visible that angle reaches certain fixed value.

2. keyboard according to claim 1, is characterized in that,

Described PCB comprises microcontroller, described microcontroller comprises button display module;

Described button display control module, for the content shown in the short in size LCDs that arranges under controlling each button.

3. keyboard according to claim 2, is characterized in that,

Described keyboard also comprises adjustment rack, under being arranged on peep-proof layer, for adjusting the visible angle of peep-proof layer, to ensure that in the safe range except importer place, other people are invisible.

4. keyboard according to claim 3, is characterized in that,

Described microcontroller also comprises Angle ambiguity module, and Angle ambiguity module is connected with adjustment rack;

Described Angle ambiguity module, obtains optimal visibility angle for adjusting adjustment rack to make peep-proof layer 8.

5. keyboard according to claim 4, is characterized in that,

The account form that described Angle ambiguity module calculates described optimal visibility angle is:

Wherein $\mathrm{\θ}=arcsin\left(\frac{2\mathrm{\π}}{\∂}x\right);$

for optical wavelength, x is the current planar offset of peep-proof layer.

6. keyboard according to claim 5, is characterized in that,

The adjustment angle of described adjustment rack is θ-θ ₀, θ ₀for peep-proof layer current visible angle.