CN1371038A

CN1371038A - Cipher input device

Info

Publication number: CN1371038A
Application number: CN 01104438
Authority: CN
Inventors: 秦建忠; 傅仲逑
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-27
Filing date: 2001-02-27
Publication date: 2002-09-25

Abstract

The cipher input device includes driver circuit, CPU unit, touching input screen and display screen and features its cipher touch inputting keyboard with keys with variable positions and sizes. The cipher data input in keyboard in new arrangement are passed through drive circuit to standard keyboard input port and/or standard serial port and transmitted according to corresponding communication protocol. The present invention expands the cipher input range and has ever higher security function.

Description

Cipher input

The invention belongs to computing machine additional input equipment, relate to a kind of cipher input.

At present, all kinds of microcomputers of popularization and application at home, the computer network services of electronic commerce times particularly, too busy to get away use has the cipher input of the information code of function of keeping secret, and the most frequently used cipher inputting keyboard is 0-9 10 numeric keys and function keys such as acknowledgement key, clear key, because the arrangement position of each key is fixed, when the user inputs password, when particularly password need repeat to import, the figure place of this password and by key total according to being easy to be stolen, cause unnecessary loss.

It is the non-character cipher input device of CN127011A that the Chinese invention patent communique discloses publication number, and this design has improved confidentiality, but directly perceived inadequately.

The object of the present invention is to provide a kind of compatibility strong, easy to use, have stronger confidentiality, an input speed cipher input faster.

The present invention is as the substitute of ordinary password input keyboard, input unit, whole device comprises driving circuit, CPU (central processing unit), touch input screen and display screen, it is characterized in that utilizing the display screen of touch input screen and display key icon to overlap to form tactile keyboard, comprise some function keys such as 0-9 10 numeric keys and acknowledgement key, clear key, backspace key and initiating key, the size of these key icon and arrangement position are unfixing, the user uses the password of this device input to be difficult for being stolen, and has the effective sound equipment prompting of button simultaneously and selects to use for the user.Directly utilize the keyboard interface and/or the serial line interface of standard to link to each other with microcomputer, two kinds of connected modes all do not change the one-piece construction and the original function of microcomputer, use communications protocol software work separately.

Advantage of the present invention is to use conveniently, compatible strong, reliable operation, has stronger confidentiality during the input password.Two kinds of connected modes with microcomputer have guaranteed the usable range of cipher input, on need inputing the smart machine of password, all can use, the present invention utilizes its key icon to show and touch input position is overlapping and the position is fixing, prevents that password is stolen when input; Utilize its portable characteristics, smart machine can external cipher input, so usable range is extensive.

Fig. 1 is the block diagram of cipher input of the present invention.

Fig. 2 is the block scheme of CPU (central processing unit) formant of the present invention.

Fig. 3 is the workflow diagram of CPU (central processing unit) of the present invention.

Below in conjunction with accompanying drawing, cipher input of the present invention is described further and illustrates.

With reference to Fig. 1, cipher input of the present invention mainly is made of driving circuit 1, CPU (central processing unit) 2, touch input screen 3 and display screen 4, wherein driving circuit 1 links to each other with the QWERTY keyboard input port or the standard serial mouth of terminal 5, is received by terminal like clockwork with the data-signal that guarantees the password input.CPU (central processing unit) 2 cooperates with touch input screen 3 and display screen 4, in start, reset or password end of input time prompting " online ", information such as " welcome are used ", when preparing to receive the password input, terminal then points out information such as " can input password " by initiating key, on touch screen, show ten digital key icon of 0-9 at random after touching " beginning " key, show acknowledgement key in the fixed position, backspace key, some function key icons such as clear key and initiating key, wait for that the user inputs password, and whenever press behind the key or finish once on the touch screen of complete password input back key icon display position randomly changing once, selection according to the user, can produce or not produce the sound equipment indication when touch key-press is effective, digital keys is pressed in input during password will preserve this numeral when effective, press backspace key and will remove last effective key number of this input before this when effective, press clear key and will remove all effective key number of this input before this when effective, press acknowledgement key and will finish this password input when effective.CPU (central processing unit) 2 will be sent to terminal 5 with the data of being preserved with the communications protocol form of stipulating respectively or continuously according to the connected mode with terminal 5.

With reference to Fig. 2, Fig. 3, CPU (central processing unit) is made up of CPU 6, address bus 7, control bus 8, data bus 9, memory cell 10, I/O interface 11 and keyboard data line 12.In the present embodiment, CPU adopts MC68EZ328PU16V, and memory cell adopts one or more AT49FXXX flash memory, also can select ROM (read-only memory) storage I/O driver for use, and the I/O interface is mainly used in and connects display screen and touch input screen.CPU 6 is by address bus 7, control bus 8 and data bus 9, and the fetch program is by the displaying contents of I/O interface 11 control display screen from storer 10; The position signalling of touch input screen receives data by I/O interface 11 request CPU 6, and serial keyboard data and keyboard clock signal are sent by keyboard data line 12 in the back, output to terminal device by driving circuit.Concrete workflow is: information such as screen display " online ", " welcoming to use ", and when terminal allows the password input, information that screen prompt " can be inputed password by initiating key " etc.Show ten digital key icon of 0-9 and some function key icons such as acknowledgement key, backspace key, clear key and initiating key at random on the screen behind touch " beginning " key, wait for user's button, arrange touch-screen correspondence position key assignments consistent simultaneously, and wait button with icon; Touch arbitrary key position and all send serial keyboard data and keyboard clock signal to terminal, display key icon at random again waits button next time then.When institute's button is the carriage return acknowledgement key, finish this password input, show welcome message again, wait for that terminal allows the input password.

Claims

1. a cipher input comprises driving circuit, CPU (central processing unit), touch input screen and display screen, it is characterized in that having the touch screen type cipher inputting keyboard.

2. cipher input as claimed in claim 1 is characterized in that described touch screen type cipher inputting keyboard is presented on the display screen.

3. cipher input as claimed in claim 1 is characterized in that described cipher inputting keyboard has key icon not stationary arrangement, big or small random variation, the effective input information data function consistent with key icon at random.