CN2190319Y

CN2190319Y - Disorder keyboard

Info

Publication number: CN2190319Y
Application number: CN 94211904
Authority: CN
Inventors: 李哲
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-12
Filing date: 1994-05-12
Publication date: 1995-02-22
Anticipated expiration: 2004-05-12

Abstract

The disorder keyboard is composed of a glass filter panel, a light shading grid, an LED nixie tube and keys. It is characterized by that under the key a digital display formed from 8-segment digital tubes is set, and is correspondent to digital input key one by one, and between the panel and LED digital tube a grating anti-theft equipment formed from vertical light-shielding grid is set. Because the key value represented by each key is determined by displaying the numerical value of the nixie tube through the panel, the position of each key value is relatively fixed unlike the common keyboard, and a shutter-like grating device is arranged, the observation angle of the display is limited to be +/-5 degrees horizontally. Under the coordination of the disordered keyboard and the grating observation angle limiting device, the purpose of inputting the digital code in a secret way is achieved, and the device is suitable for inputting the bank deposit code and the electronic coded lock unlocking code.

Description

Unregular keyboard

The utility model relates to a kind of computer digit input keyboard, particularly a kind of out of order keyboard that can guarantee safely inputting information.

In the safety precaution field, no matter be machinery or electric lockset, the preservation of key all is extremely important undoubtedly, but present use link at key, no matter is the password input process, be rotating disk password or electronic keyboard input coded lock, all do not have a kind of thief-proof means of looking reliably, thereby often in the password use, just caused giving away secrets of key.

The purpose of this utility model is: provide a kind of out of order keyboard at above-mentioned defective, the possibility that password is given away secrets in input process by this keyboard is almost nil.

The purpose of this utility model is achieved in that out of order keyboard, is by glass optical filtering panel (1), louver (-vre) (2), and LED charactron (3), button (4), extension rod (5), microswitch (6) and printed circuit board (7) constitute, and it is characterized in that:

(1). totally four arranged by the keyboard that 12 buttons (4) are formed, every row has three buttons (4), and wherein first, second and third row and the 4th row's intermediary button is a digital input key, totally 10 characters inputs in order to composition 0--9;

(2). corresponding one by one at the nixie display that the below of button (4) is made up of 8 sections charactrons (3) with button (4), thereby also be 10, the left-leaning 10 ° of installations of the display tube of every LED8 hop count sign indicating number;

(3). the key on the left of the 4th row of keyboard is a reset key, is the approval key on keyboard the 4th row right side;

(4). the thief-proof equipment of between preceding filter glass panel (1) and LED charactron (3), forming of looking of grating by perpendicular type louver (-vre) (2);

(5). the extension rod (5) of button (4) below joins with microswitch (6).

Because the possibility that has said structure to make the utility model give away secrets when password is imported is almost nil, thereby improved the confidentiality of key greatly, and the electronic password lock made from this means, or will improve a lot by the overall security of this out of order keyboard as the input control system of the fetch equipment of the PIN (Personal Identification Number) in the gateway control system.Really can make the lockset of a lock dicode have more security.Usable range of the present utility model is quite extensive, for example, and the input of cash in banks password, the input of electronic type unlocking coded lock password etc.

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the utility model panel arrangement and partial sectional view;

Fig. 2 is side view of the present utility model and partial sectional view;

Among the figure: (1) glass optical filtering panel (2) louver (-vre) (3) LED charactron (4) button (5) extension rod (6) microswitch (7) printed circuit board

Referring to Fig. 1, Fig. 2:

The out of order keyboard of computer control, the key assignments that its outstanding characteristics are each button (4) representatives is to be determined by the numerical value of the LED charactron demonstration that sees through filter glass panel (1), and relatively-stationary position is not all arranged as each key assignments of keyboard, thereby before and after every group of key input, or before and after each key input, unordered change at random can be done in whole key assignments position that keyboard is relative under the control of computer, this function mainly relies on software to realize.

Between LED charactron and panel, be provided with the mounting for grating of a similar blind window principle, be louver (-vre) (2), have only just facing to keyboard, and a people within the button distance is unique operator that can see shown key assignments, like this, under the cooperation of the keyboard of unordered variation and grating viewing angle limiting device, reaching the digital purpose of input of maintaining secrecy.

The printed circuit plate portion is a prior art, be to be main chip by single-chip microcomputer, be equipped with ROM, RAM, I/O chips etc. are formed the whole CMOS circuit, and are provided with auto sleep circuit and clock circuit, thereby guarantee: (1), quiescent dissipation is in μ A level, and four joint No.5 cells normally unblank to use more than 1 year; (2), the time dead band is set, is at the dead band internal keyboard and forces the control state, do not accept any order, also do not carry out any order.

Out of order keyboard has 12 buttons and forms, totally four arrange, 3 of every rows, wherein first, second and third row and the 4th row's middle key are digital input key, totally 10 character inputs in order to composition 0--9, the nixie display of below enter key, forming by 8 sections LED charactrons (3), corresponding one by one with input button (4), also be 10.

Key in keyboard the 4th row left side is a reset key, in input process, when can make keyboard clearance, also will make the shown Serial No. of LED that once new variation takes place, before each data input, and at first will be by this key, so that keyboard is in reset mode.

For the approval key, behind correct number series input keyboard, need then press this key in keyboard the 4th row's right hand side keys, with the end of expression input process, keyboard will produce a carriage return character automatically, and the demonstration of closing keyboard.

The thief-proof equipment of between preceding transparent filter glass panel (1) and LED charactron (3), forming of looking of grating by perpendicular type grid, its principle such as daily blind window, form by the light guide sheet that highly is 12mm, sheet is thick to be 1mm, contain ultra-thin resistance mating plate between the light guide sheet, thereby form one group of aperture plate,, can be controlled at exactly within level ± 5 ° by regulating the distance between grating net and the LED demonstration charactron.During use, at first press reset key, observation display spare, to luminous and demonstrate one group of out of order numeral, by shown key assignments, button 2--10 position (even more than 10) continuously, import correct number, and after end of input, press immediately and approve to be enter key, this moment, LED showed GOOD if password is correct, shutdown after two seconds, otherwise then show ERROR and sounding reminding, shutdown after two seconds is behind key assignments of input, hummer provides 0.1 second 1KHZ prompting sound at random, if input error can be re-entered data by after the reset key, also can be after waiting for peacefully for 10 seconds, after treating that shutdown enters the sleep for electricity saving state automatically, rework by reset key again, when bad password after continuously occurring three times, forced shutdown 20 minutes.

Claims

1, out of order keyboard is by glass optical filtering panel (1), louver (-vre) (2), and LED charactron (3), button (4), extension rod (5), microswitch (6) and printed circuit board (7) constitute, and it is characterized in that:

(1). totally four arranged by the keyboard that 12 buttons (4) are formed, every row has three buttons (4), and wherein first, second and third row and the 4th row's intermediary button is a digital input key, totally 10 characters inputs in order to composition 0-9;

(5). the extension rod (5) of button (4) below joins with microswitch (6).

2, out of order keyboard according to claim 1, it is characterized in that: louver (-vre) (2) is made up of the light guide sheet that highly is 12 millimeters, sheet is thick to be 1 millimeter, contain ultra-thin resistance mating plate between the light guide sheet, thereby form one group of aperture plate, by regulating the distance between grating net and the LED charactron (3), can be within level ± 5 ° with viewing angle control.