CN2651850Y - Keyboard operating infomration memory - Google Patents

Abstract

A keyboard operation information storage is provided, which is composed of a shell, a circuit board, a mainframe interface and a keyboard interface. The circuit board is provided with a SCM, a memory module, a clock module and a circuit board interface connected with the mainframe and the keyboard; wherein, the SCM is internally positioned with a programme unit which comprises a main programme module, a cipher recognizing module, a keyboard data receiving and transferring module, a key code data module and a keyboard key code data bit module; the circuit board interface has two lines which are respectively connected with a data line and a clock line of a keyboard line and another two lines are respectively connected to a power cord and an earth line of the keyboard line. The utility model can preciously store and check all the keyboard operations, which can be used for backup on demand or used for computer users conducting monitor for operators.

Description

The keyboard operation information-storing device

Technical field the utility model relates to computer device, particularly a kind ofly can store and check the storer of keyboard operation information.

In the computing machine that background technology is present, particularly Chang Yong PC, keyboard operation information generally can not be stored.Find to have device in the prior art with keyboard signal storage and conversion, as publication number is device 1375777 Chinese patent discloses, but its effect is with key signals combined sequence commonly used, replace with special keys, purpose is to improve keyboard operation efficient, is not keyboard operation information stores truly.The keyboard operation information stores has following effect at least: one, can be for operating process provide backup, if meet accident shutdown, but this backup guarantee information can not lost; Two, operator's operating process is noted down and studied, help improving operation, raise the efficiency; Three, can supervise keyboard operation person's operation, help strengthening management, enforce discipline and educate.Therefore, design is a kind of can store and check that the storer of keyboard operation information is significant.

The summary of the invention the purpose of this utility model provides a kind of keyboard operation information-storing device, and keyboard operation information can be stored and check to this storer.

The purpose of this utility model is achieved through the following technical solutions: a kind of keyboard operation information-storing device, it is characterized in that forming by shell, wiring board, host interface and keyboard interface, be equipped with on the wiring board single-chip microcomputer, memory module, clock module and with the wiring board interface that main frame is connected with keyboard, program element is housed in the single-chip microcomputer.

Said program element comprises main program module, password identification module, keyboard data reception and modular converter, key data module of transmission, sends a keyboard key code data position module in the such scheme.

In the such scheme in the said wiring board interface, there are two lines to be connected with clock line with the data line of keyboard chord respectively, also have the two other line to receive respectively on the power lead and ground wire of keyboard chord, keyboard chord is by the keyboard interface and the host interface of storer, and the annexation of keyboard and main frame does not change.

The whole cylindrical or rectangular build of said storer in the such scheme, the keyboard interface of storer and host interface can be used cable to prolong or need not prolong and receive wiring board.

Can there be heat-shrinkable T bush the outside of said shell in the such scheme.The effect of this sleeve pipe is to prevent from arbitrarily to pull up after installing.

The using method of this keyboard operation information-storing device is, keyboard connector is pulled up from computer, memory string is associated between main frame and the keyboard, and promptly the keyboard interface of storer is connected on the keyboard connector, and the computer interface of storer is connected on the keyboard socket of main frame and gets final product.The booting computer background storage just can be worked automatically, carries out the storage of operation information, when needs are checked canned data, sends command adapted thereto by keyboard, can see canned data on display.

The utility model has the advantages that: one, can store exactly, check all keyboard operations, but supply and demand will be backed up or computer user that the operator is supervised uses; Do not need additional power source, profile is small and exquisite, takes up room hardly; Three, occupying system resources not, four, do not need install software or driver, easy to use; Five, can not arrived by any software probe.

Description of drawings Fig. 1 is the utility model structure and installation site synoptic diagram.

Fig. 2 is the circuit block diagram of the utility model wiring board.

Fig. 3 is the circuit diagram of the utility model embodiment

Fig. 4, Fig. 5 and Fig. 6 are the program element process flow diagrams of installing in the utility model single-chip microcomputer.Fig. 4 is that keyboard data receives and the modular converter process flow diagram, and Fig. 5 is the process flow diagram that sends a key data module, and Fig. 6 is the process flow diagram that sends a key data bit module.

Embodiment is described further the utility model below in conjunction with drawings and Examples.

Embodiment is a columniform keyboard operation information-storing device, and structure as shown in Figure 1.It is made up of cylindrical or longitudinal casing (4), host interface (3), keyboard interface (6) and wiring board (5), the keyboard interface of storer and host interface can be used cable to prolong or need not prolong and receive on the wiring board, shell (4) is made of plastics, wiring board (5) is installed in the inside of shell (4), host interface (3) and keyboard interface (6) are installed in the two ends of shell (4), host interface (3) is 5 lines or the 6 line plugs identical with the common keyboard plug, and keyboard interface (6) is 6 line sockets that are complementary with the common keyboard plug.The keyboard interface of storer (6) is connected to and is positioned on the terminal keyboard plug (7) of keyboard cable line (8), and host interface (3) is connected on the keyboard socket (2) of main frame (1).The booting computer background storage just can be worked automatically, carries out the storage of operation information, and when needs were checked canned data, the button (10) by keyboard (9) sent command adapted thereto, can see canned data on display.

The wiring board circuit of embodiment is shown in figure (2) and figure (3), this circuit is mainly by single-chip microcomputer, memory module, clock module and wiring board interface are formed, the single-chip microcomputer U1 that present embodiment is used is 89C4051, memory module U2 is 24C256, clock module Z1 frequency of utilization is the crystal oscillator of 11.0592M, annexation between the module as shown in Figure 3, in 6 lines of keyboard, the pin one 4 of data line and clock line and single-chip microcomputer, pin 6 connects, the keyboard power line is connected with the pin one of single-chip microcomputer with resistance R 4 backs by capacitor C 4 respectively with the keyboard ground wire, the keyboard power line also is connected on 8 pin of 20 pin of U1 and U2, and the keyboard ground wire is also connected to 10 pin of U1,1 of U2,2,3, between the C1 and C2 of 4 and 7 pin and clock circuit.Any variation in that the storer front and back are installed, does not take place in the line that keyboard is all and the annexation of main frame.

The data that transmit on the keyboard data line are 11, and first is the start bit, and second to the 9th is real useful key data, and the tenth is stop bit.The 0-10 of key data bit counter represents the first to the 11 of key data, when having key to transmit on the data line of keyboard, follow 11 key data to also have 11 bit clock signals, the once interruption of clock can be read the one digit number certificate from the data line of keyboard, and it is stored, interrupt just can reading complete key data 11 times.For realizing the function of storer, program element of the present utility model comprises main program module, password judge module, keyboard data reception and modular converter, key data module of transmission, sends a keyboard key code data position module.Main program module is identical with existing general module with the password judge module, and no longer auspicious stating mainly illustrates the module that has key to receive and send below.Fig. 4 is that keyboard data receives and flow path switch figure, and it comprises the steps:

1, the content of registers in the preservation single-chip microcomputer;

2, judge whether key data bit counter is zero, if be zero, then the key data pointer adds 1 back recovery content of registers;

If 3 is non-vanishing, then judge key data bit counter whether between 1 to 8, if then the shift key code data stores among the global variable key, then, the key data pointer adds 1 back and recovers content of registers;

4, if not, judge then whether key data bit counter equals 9, if, then carry out parity checking, then, the key data pointer adds 1 back and recovers content of registers;

5, if not, then key data bit counter is zero, then recovers content of registers.

6, finish.

Fig. 5 is the process flow diagram that sends key data, and Fig. 6 is the process flow diagram that sends a keyboard key code data position, and these two flow processs are finished the transmission of 11 bit data jointly.The process flow diagram of Fig. 5 may further comprise the steps:

1, equal 11, data bit is set transmits and to be labeled as zero when the data transmitting counter, the timer that sends a data bit is started working, and at this moment, the transmitter register data are zero;

2, the judgment data position is transmitted and is marked whether to be zero, if, continue to wait for, if not, then transmitter register equals current key, and data bit transmits and is labeled as zero;

3, data bit transmits and is labeled as zero, and transmitter register moves to right one;

4, whether judge transmitting counter greater than 2, if then return step 3 state before; If not, then data bit transmits and is labeled as zero, and the lowest order of transmitter register equals the key check bit;

5, the judgment data position is transmitted and is marked whether to be zero, if, continue to wait for, if not, then data bit transmits and is labeled as zero, and the lowest order of transmitter register equals 1;

6, the judgment data position is transmitted and is marked whether to be zero, if, continue to wait for, if not, current process of transmitting then finished.

Fig. 6 is the process flow diagram that sends a keyboard key code data position, and it may further comprise the steps:

1 save register content, disabled interrupt;

2, whether judgment data transmission pointer is zero, and in this way, then the key clock port is set to zero, and FPDP is set to 1, enters step 6 then;

3, as not, then the key clock port is set to 1; Time-delay;

4, the minimum data position of transmitter register is to the key FPDP; Time-delay;

5, the key clock port is set to zero; The data transmitting counter subtracts 1;

6, the data bit transmission is set and is labeled as 1; Allow to interrupt; Recover content of registers;

7, finish.

Claims (4)

1, a kind of keyboard operation information-storing device, it is characterized in that forming by shell, wiring board, host interface and keyboard interface, be equipped with on the wiring board single-chip microcomputer, memory module, clock module and with the wiring board interface that main frame is connected with keyboard, program element is housed in the single-chip microcomputer.

2, storer according to claim 1, it is characterized in that in the said wiring board interface, there are two lines to be connected with clock line with the data line of keyboard chord respectively, also have the two other line to receive respectively on the power lead and ground wire of keyboard chord, keyboard chord is by the keyboard interface and the host interface of storer, and the annexation of keyboard and main frame does not change.

3, storer according to claim 1 is characterized in that the whole cylindrical or rectangular build of said storer, and the keyboard interface of storer and host interface can be used cable to prolong or need not prolong and receive wiring board.

4, storer according to claim 1 is characterized in that said enclosure can have heat-shrinkable T bush.

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