CN2513162Y

CN2513162Y - Computer key board

Info

Publication number: CN2513162Y
Application number: CN 01269700
Authority: CN
Inventors: 陈束学
Original assignee: YIKAI ELECTRIC APPLIANCE PRODUCT CO Ltd DONGGUAN
Current assignee: YIKAI ELECTRIC APPLIANCE PRODUCT CO Ltd DONGGUAN
Priority date: 2001-12-14
Filing date: 2001-12-14
Publication date: 2002-09-25
Anticipated expiration: 2011-12-14

Abstract

The utility model relates to a computer key board, containing a key board casing, a key group, a signal wire and a key board control device; wherein the key board control device is controlled by an integrate circuit which is connected to the key group and a computer mainframe respectively; the key group is positioned on a key board casing; the key group consists of a plurality of letter keys, a plurality of function keys, a plurality of number keys, four cursor moving keys and three power keys; the key group also contains of a function switch key which is positioned on the key board cashing; and the function switch key is opposite to a switch which is usually open situation and is connected to the one joint on the integrate circuit. When use the computer key board, only press the function switch key and the function keys can enter another procedure and realize multimedia function in accordance with the distribution situation of a scan matrix which is set in the computer. Thus the utility model is not only simple to be operated, but also easy to be manufactured and low in cost.

Description

Computer keyboard

(1) technical field

The utility model relates to a kind of computer keyboard, and it is a kind of computer keyboard that is applicable to the multimedia operations system.

(2) background technology

Along with making rapid progress of computer system, multimedia circulation is more and more universal, the use of multimedia operations system is more extensive, and the media manipulation system be unable to do without computer keyboard, and existing keyboard (as shown in Figure 1) has been difficult to satisfy the demand of multimedia operations system.As described below:

(1) (what is called repeats to transmit and is meant when certain button and is pinned when not putting though existing window software can be adjusted the repetition transfer rate of keyboard, keyboard repeats to transmit this key codes of pushbuttons and gives main frame), but this adjustment must could be set through multi-pass operations and finish, very inconvenience;

(2) though, have some application software can tackle whole signals of keyboard at present in computer-internal, to prevent other people random keypad, can avoid simultaneously because of operator's mistake by, and the input error data have the function of locking keyboard.But this software need pass through installation procedure, has both taken the storage space of computing machine, and has cost an arm and a leg;

(3) present, commercially available keyboard has or not to distinguish by sound and is divided into two big classes, promptly sound keyboard and noiseless keyboard, and when operating sound keyboard, the user can hear sound key entry state, but its shortcoming is in the office place or the dead of night's use can produce noise; And use noiseless keyboard, be difficult to learn whether button plays input action.

Hence one can see that, and conventional keyboard can't satisfy the requirement of multimedia operations effectively.Though, also a plurality of buttons of realizing above-mentioned functions all can be arranged on the QWERTY keyboard at present, form a MultiMedia Keyboard, expensive about ten dollars of its prices than QWERTY keyboard.

(3) summary of the invention

The purpose of this utility model is to provide a kind of computer keyboard that is applicable to the multimedia operations system.

For achieving the above object, the utility model is taked following technical measures:

Computer keyboard of the present utility model comprises: keyboard case, key groups, signal wire and the keyboard controller of being controlled by integrated circuit; Integrated circuit connects key groups and main frame respectively; Key groups is located on the keyboard case, and key groups comprises text button, function key, numerical key, cursor movement key, three power keys;

Key groups also comprises a function switch key, and it is located on the keyboard case, and the function switch key is corresponding to a switch that is connected integrated circuit one contact.

Wherein: another contact of described integrated circuit can connect the light emitting diode of a Presentation Function switching state.

Wherein: can be provided with the function corresponding symbol on described function switch key and the function key.

Wherein: another contact place of described integrated circuit connects a hummer.

Wherein: described hummer can be the auto-excitation type hummer.

Compared with prior art, the utlity model has following effect:

Because the utility model has been set up a function switch key on QWERTY keyboard, the pressing function switch key, the switch in the may command circuit makes it be closure state, promptly enter another stratum of program inner setting, the distribution situation of complying with the scan matrix of its setting just can realize multimedia function.Simple in structure and the cost of this keyboard is low.During operation,, easy to operate as long as in the pressing function switch key, push a function key or just can realize the switching of circuit can increasing new function by pressing function switch key and another function key.

In addition, also corresponding function symbol, literal can be set on function switch key and function key, operate to make things convenient for the user.A contact place at integrated circuit can connect a hummer, carries out sound or noiseless switching by the function switch key, and its switching mode is simple.

(4) description of drawings:

Fig. 1: the vertical view of existing standard keyboard;

Fig. 2; The perspective exploded view of the utility model computer keyboard embodiment;

Fig. 3: the vertical view of the utility model computer keyboard embodiment;

Fig. 4: the circuit diagram of the utility model computer keyboard embodiment;

Fig. 5: the process flow diagram of the utility model computer keyboard embodiment.

Table 1: the scan matrix in expression the utility model.

(5) embodiment:

Reaching embodiment in conjunction with the accompanying drawings is described in detail as follows architectural feature of the present utility model:

At first, see also Fig. 2 and Fig. 3, computer keyboard of the present utility model mainly is made up of keyboard case 1, key groups 2, signal wire 3 and keyboard controller 4.Wherein, key groups 2 is located on the keyboard case 1, and key groups 2 can be divided into text button 21, function key 22, numerical key 23, cursor movement key 24, three power keys 25 and function switch keys 26 by the region.The button that function switch key 26 is set up on the basis of existing keyboard for the utility model, switch key 26 can be located at better position according to operator's use habit, generally is located at the below of " Enter " key in the upper right corner of keyboard or the text button 21.

Wherein, be provided with integrated circuit 41 in the keyboard controller 4, it is the integrated circuit of EM-78448 that integrated circuit 41 in the present embodiment adopts model, corresponding contact on the integrated circuit 41 connects each button in each key groups 2 respectively, and connect main frames through connector 43, by integrated circuit 41 key set code is inputed in the main frame.

Shown in Fig. 4 and table 1, a plurality of I/O (I/O) contact that is provided with on the integrated circuit 41 can form a scan matrix; Wherein, the I/O contact of " sky " is (as contact: can connect a switch 411, hummer 412 and light emitting diode 413 (conversion pilot lamp) 7,8,9,2,10,40) respectively; The positive voltage VCC end of the other end connecting key disk controller of hummer 412 and light emitting diode 413.Function switch key 26 is corresponding to switch 411, switch 411 can be in normally open, pressing function switch key 26 can make switch 411 be closure state, to transform to another setting program of computer-internal, the row or column line corresponding (as shown in table 1) of the scan matrix of setting with keyboard can reach the multimedia function of setting according to the distribution of scan matrix.In the table 1, I/O contact S0～S17, the R0～R7 of integrated circuit 41 forms 18 lines and 8 alignments corresponding in the scan matrix respectively, and its line and alignment intersect to form one 8 * 18 scan matrix; Function switch key 26 is the matrix element that the chart acceptance of the bid has color spot with the corresponding relation of scan matrix chart, as S0 * R0, S2 * R6 etc., S2 * R6 wherein is illustrated in the stratum function that a key plays " F1 ", and in another stratum, play " BACK " (multimedia function), utilize function switch key 26 to realize two kinds of function conversion.

As shown in Figure 5, it is the process flow diagram of the utility model computer keyboard embodiment, when beginning to operate, at first, does carry out step 51: main frame have order? if "No", does then carry out step 52: judging have button to be pressed in the scan matrix? if "Yes", then carry out step 53: judge whether to be the function switch key? if "Yes", carry out step 54: the keypress function conversion, if conversion pilot lamp (light emitting diode 413) state transformation is state transformation, then carry out step 55: carry out the definition of second layer keyboard, then carry out step 56 again: transmit scan code and give computing machine.In step 51, if main frame has order, then carry out step 57: fill order is also responded and is given computing machine.In step 54, if not conversion of state then carry out step 58: then carry out the definition of ground floor keyboard, i.e. standard code.

The utility model also can be provided with a function and switch symbol (that be provided with among the embodiment of the present utility model is Turbo) on function switch key 26, also can image symbol or literal be set correspondence on required function key 22.As mentioned below:

(1) speed change: on " F1-F7 " of function key 22 key, print arrow "  ", and can be by the speed of how much representing transfer rate of arrow, and, send word rate with the special disposal keyboard simultaneously in steering order of the corresponding design of keyboard.In the time of pressing function switch key 26, when also pushing button in " F1-F7 ", just can switch the transfer rate of key set code, simple to operate to satisfy operator's demand, and convenient;

(2) locking keyboard: can on " F11 " of function key 22 key, print a tapered end shape symbol.During use, as long as simultaneously pressing function switch key 26 and F11 key, keyboard will judge out whether need to transmit this key set code controlling of integrated circuit 41, to pin or to open keyboard, without installation procedure, and does not account for the storage space of computing machine, operates easy again;

(3) sound emulation: can print a speaker symbols on " F10 " key in function key 22, place, place with expression sound emulation key, in integrated circuit 41 I/O contact place connect a hummer 412 (can be auto-excitation type, outside swash formula or independent-excited, wherein the circuit of auto-excitation type is simpler), the positive voltage VCC end of the other end connecting key disk controller 4 of hummer 412.During use, while pressing function switch key 26 and " F10 " key, then internal processes can be judged unlatching or close.As be the unlatching shape, then hummer 412 can send the sound that frequency is 2 KHz, just whenever can send a corresponding sound by a key.

(4) stratum switches: be provided with a steering order in integrated circuit 41, with the subroutine of special disposal keyboard scan matrix stratum, when function switch key 26 and F12 key were pressed simultaneously, its scan matrix can switch between first rank and second rank.

(5) anti-error by function: as owing to be provided with the power button of dormancy of three tool computing machines or shutdown function in the Microsft Windows operating system, to be respectively " POWER DOWN ", " SLEEP " reaches " WAKE UP " button.In conventional keyboard, this triple bond all is placed on the cursor key top, and the user does not note making computing machine to be in shutdown or dormant state slightly.And use three keys to need pressing function switch key 26 simultaneously in the utility model desire, just can send this key set code, thus effectively prevent mistake by situation take place.

In addition, because the utility model structurally only increases by a function switch key, during the manufacturing, mould commonly used also need not done too big change, and is simple in structure and cost is low; During operation, can be in the pressing function switch key, pressing function key or switch to another stratum by pressing function switch key and another function key is realized a what's new, satisfies the demand of multimedia operations system, and is convenient and practical.

Table 1

Claims

1, a kind of computer keyboard comprises: keyboard case, key groups, signal wire and the keyboard controller of being controlled by integrated circuit; Integrated circuit connects key groups and main frame respectively; Key groups is located on the keyboard case, and key groups comprises text button, function key, numerical key, cursor movement key, three power keys;

It is characterized in that key groups also comprises a function switch key, it is located on the keyboard case, and the function switch key is corresponding to a switch that is connected integrated circuit one contact.

2, computer keyboard according to claim 1 is characterized in that: another contact of described integrated circuit connects the light emitting diode of a presentation function switching state.

3, computer keyboard according to claim 1 and 2 is characterized in that: described function switch key and function key are provided with the function corresponding symbol.

4, computer keyboard according to claim 3 is characterized in that: another contact place of described integrated circuit connects a hummer.

5, computer keyboard according to claim 4 is characterized in that: described hummer is the auto-excitation type hummer.