CN2195777Y

CN2195777Y - Orderless keyboard

Info

Publication number: CN2195777Y
Application number: CN 94211905
Authority: CN
Inventors: 李哲
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-12
Filing date: 1994-05-12
Publication date: 1995-04-26
Anticipated expiration: 2004-05-12

Abstract

The utility model relates to an orderless keyboard, comprising a membrane keyboard, a grating device, an LED digital display and a main computer circuit board. The utility model is characterized in that a display composed of 8 sections of digital tubes is arranged under the bottom of the key and one-to-one correspondents to the digital input keys, and a grating anti-theft equipment composed of vertical type louver is arranged between the membrane keyboard and the digital display. Because the key value represented by every key are determined by the number value of the digital tubes displayed by a panel, while the position of each key value of the common keyboard is fixed. Meanwhile, the utility model is also provided with a louver-liked grating device, and then the inspection angle of the display is limited between +5 DEG and-5 DEG, and under the cooperation of the disorder varied keyboard and the grating inspection angle limiting device, the purpose of inputting numbers secretly is realized. The utility model is suitably used for the input of the bank deposit cipher and the unlocking cipher of the electronic trick lock.

Description

Orderless 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 be in 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 to provide a kind of out of order keyboard at above-mentioned defective, and the possibility of giving away secrets when making password by this keyboard input is almost nil.

The purpose of this utility model is achieved in that

Out of order keyboard is to be made of membrane keyboard, mounting for grating, LED nixie display and host computer circuit board, it is characterized in that:

(1). the keyboard of being made up of 12 film keys has four rows, and every row has three buttons, and wherein first, second and third row and the 4th row's intermediary button is a digital input key, has ten in order to form the character input of 0-9;

(2). the LED nixie display of below button, forming by eight sections charactrons, corresponding one by one with film key, thereby also be ten, every left-leaning 10 ° of installations of LED eight hop count sign indicating number tube displays;

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

(4). the thief-proof equipment of between preceding transparent keyboard touch screen and LED nixie display, forming of looking of grating by perpendicular type grid.

Because said structure is arranged, the possibility that makes the utility model give away secrets when password is imported is minimum, thereby improved the confidentiality of key greatly, and the electronic password lock of making in this way, or by the fetch equipment of this out of order keyboard as PIN (Personal Identification Number), its overall security will improve a lot, and really the lockset that can use the double density sign indicating number to open has more security.Usable range of the present utility model is quite extensive, for example: 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 out of order keyboard side-looking structural drawing;

Among the figure: (1) membrane keyboard, (2) LED nixie display, (3) host computer circuit board, (4) mounting for grating.

Referring to Fig. 1, Fig. 2, the out of order keyboard of computer control, the numerical value that its outstanding characteristics are each button representatives all is to be decided by the shown numerical value of LED nixie display (2) that sees through the button keycap, and not as keyboard, each key assignments all has relatively-stationary position.Thereby before and after every group of key input front and back or the input of each key, unordered change at random can be done in whole key assignments position that keyboard is relative under the control of computer, and this function mainly relies on software to realize.

Between LED nixie display (2) and membrane keyboard (1), be provided with the mounting for grating (4) of a similar blind window principle, thereby the viewing angle that has limited display 2 is between level ± 5 °, that is to say, have only just facing to keyboard, and within a people's opereating specification, be unique operator that can see shown key assignments, like this, under the cooperation of the keyboard (1) of unordered variation and grating viewing angle limiting device, reaching the digital purpose of input of maintaining secrecy.

Adopt resistance-type surface film keyboard (1) fitted seal that frame is installed and reach waterproof, protection against the tide, dustproof purpose.

Host computer circuit board 3 is a prior art, be to be main chip by the single-chip microcomputer that contains the A/D interface, be equipped with ROM, RAM I/O chips etc. are formed the whole CMOS circuit, and be provided with auto sleep and clock circuit, thereby guarantee: (1) quiescent dissipation is a μ A level, and No. 5 batteries of four joints normally unblank to use more than 1 year; (2) the time dead band is set, is in the hard closing state, do not accept any order, also do not carry out any order at the dead band internal keyboard.

Out of order keyboard has 12 buttons to be formed, and has four rows, three buttons of every row, and wherein the key in the middle of first, second and third row and the 4th row is a digital input key, totally 10 character inputs in order to composition 0--9.

The LED nixie display of below button, forming by eight sections charactrons, corresponding one by one with film key, thereby also be ten, every left-leaning 10 ° of installations of LED eight hop count sign indicating number tube displays, the 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, at first will be by this key, so that keyboard is in reset mode.

Key on keyboard the 4th row right side is the approval key, behind correct number series input keyboard, need then press this key, and with the end of expression input process, keyboard will produce the demonstration of a carriage return character and closing keyboard automatically.

The thief-proof equipment of between preceding transparent keyboard touch screen and LED nixie display, forming of looking of grating by perpendicular type grid, blind window in its principle such as the daily life, 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 between ° angle, level ± 5 by regulating the distance between grating net and the LED nixie display.

Use is such: at first press reset key, observation display is to luminous and demonstrate one group of out of order numeral, by shown key assignments, continuous button 2--10 position, even more than 10, import correct number, and after end of input, press approval (carriage return) key, this moment, the LED number showed " GOOD " if the password of input is correct, shutdown after two seconds, otherwise, then show " ERROR " and send prompting that 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 to be made of membrane keyboard, mounting for grating, LED nixie display and host computer circuit board, it is characterized in that:

2, out of order keyboard according to claim 1, it is characterized in that: mounting for grating 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 mounting for grating and the LED nixie display, can be with viewing angle control between level ± 5 °.