KR200288771Y1 - Keyboard with expandable function keys - Google Patents

Abstract

The present invention relates to a form of a keyboard having an extensible function key, wherein there are a number of extended function keys on the keyboard, such that the default codes of the function keys function in harmony with the execution of applications in the Windows system. The function keys are connected to an additional input / output cable for the microprocessor in circuitry within the keyboard to form a scan matrix and match the keyboard scan matrix, whereby the operator directly controls the current functions of the device (multimedia) around the keyboard. Control panel operation is displayed on the monitor screen, one IRQ connector pin of the microprocessor is jointly connected to the cathode of three LED diodes, and the anode of each LED diode is a scanning matrix The keyboard by being connected to one line of Makin it possible to apply XT is compatible with microprocessors; That is, the function keys can be defined in a scanning matrix that has not been defined so far, allowing the operator to directly control the current functions of the peripherals on the keyboard, and set the function keys in the "in use" mode as required by the operator. Can be.

Description

KEYBOARD WITH EXPANDABLE FUNCTION KEYS}

The present invention relates to a type of keyboard with expandable function keys, wherein the IRQ pin of the microprocessor is connected to three LED diodes, while each LED diode anode is connected to one line of the scanning matrix, The keyboard is compatible with an XT microprocessor; That is, the function key can be defined in a scanning matrix that has not yet been defined, whereby the operator can directly control the current functions of the peripherals of the keyboard; The function keys can be set to an "in-use" mode as required by the operator.

In the prior art, the prior art of the "keyboard with expandable function keys" uses a number of extended function keys such as multimedia control keys (Volume Up, Volume Dn, Mute, WWW, Record, Rewind, Close, ...). Included in the keyboard, the function keys are designed to serve the purpose of the extended function keys, to form a new scan matrix, to function with the new keyboard scan matrix, so that the operator can directly control the current functions of the keyboard peripherals. It is connected to an additional input / output cable for the microprocessor in the circuit structure, and at the same time the operation is displayed on the monitor screen, and the extended function keys are made to function with the macro program, in order to complete the intended control, but this is AT, PS Designed to function with the / 2 microprocessor, it is not compatible with the XT microprocessor.

In order to provide a thorough understanding, the technical approach and implementation for achieving the above objects and the arrangement of the present invention have been described in detail in the drawings according to embodiments.

An important object of the present invention is to further improve upon the prior art of the "keyboard with expandable function keys", which makes the keyboard compatible with the XT microprocessor, and the function keys are " It can be set to "in use" mode.

1 is a perspective view of a keyboard according to the prior art,

2 is a wiring diagram of a keyboard scanning matrix according to the prior art;

3 is a wiring diagram of a keyboard scanning matrix according to the present invention;

4 is a conversion chart of a keyboard scan matrix and a default code according to the present invention;

5 is a chart of the function keys programmed in the present invention,

6 is a chart describing the function of a diode.

* Explanation of symbols for the main parts of the drawings

1 keyboard 11 microprocessor

111: input / output cable 2: function keys

21: CD Player 22: Play

23: ?? 24: ??

25: Volume D0: LED Diode

D1: LED Diode D2: LED Diode

1 to 6, the present invention relates to a form of a keyboard having expandable function keys, and includes a keyboard 1, a plurality of expandable function keys 2, and three diodes D 0 -D 2. It is included.

On the right side of the keyboard 1 there are a number of extensions including "CD Player" (21), "Play" (22), "←" (23), "→" (24), "Volume" (25), etc. There are possible function keys 2. To form a new scan matrix, in harmony with the current keyboard scan matrix (8x16) and to achieve the purpose of extended function keys (the plurality of expandable function keys are designed to suit the needs of the user). The function keys 2 are connected to an additional input / output cable 111 for the microprocessor 11 in an internal circuit structure in the keyboard 1, so that the default code of the expandable function keys is a window system. Will function in concert with the execution of the application, the operator can control the functions of the multimedia peripheral device (such as the CD Player cited as the main example according to the present embodiment) directly on the keyboard (1), which monitors Will be shown on the screen. The conversion chart of the scanning matrix and the function keys is shown in FIG. Here, H1-H20 are designed extension keys, and the chart of the keyboard for H1-H20 is shown in FIG.

When the operator presses the "CD Player" function key 21 on the keyboard, an application in the window system will inject and hook the default code of the "CD Player" key on the keyboard pressed by the operator, It will determine whether the default code is a function key or not.

If the default code is determined and the function key 21 of " CD Player " is known to be a function key actually pressed by the operator, an application of the window system is placed on the Windows AP in the path where the " CD Player " is located. It is replaced by the Win Exec formula provided by the file parameter in the application CD PLAYER.EXE (bundled with Windows 95), and thus the "CD Player" is activated, and the control panel is displayed on the monitor screen. Displayed immediately.

Then, if the operator presses the "Play" function key 22 for "CD Player", the application of the window system converts the "Play" function key into a keyboard stroke of "Ctrl + P", this signal. Is sent back to the window system, and when this signal is received by the CD player, the "Play" operation will be executed.

3 to 6, in the present invention, one IRQ connector pin of the microprocessor 11 may be connected to the cathodes of three LED diodes D0, D1 and D2, while the respective LED diodes D0, D1 are connected. The anodes of, and D2 are respectively connected to the lines of the scanning matrix. Thus, the keyboard is compatible with the XT microprocessor in its application; And the operator can define function keys in a scanning matrix not yet defined, and the operator can directly control the functions of the peripheral device from the keyboard; The function keys can be set to an "in-use" mode as required by the user.

Although the foregoing description covers only preferred embodiments of the present invention, it is not intended to limit or limit the appended claims, and anyone of ordinary skill in the art will readily appreciate from the present description and the accompanying drawings. It is asserted that all equivalent structural / appearance variations / modifications are encompassed within the spirit of the claims.

The present invention improves the problems in the prior art as described above, and can provide a keyboard having an expandable function key having the feature of compatibility with the XT microprocessor and designing a function key suitable for the needs of the user.

Claims (3)

A keyboard having an expandable function key and compatible with an XT type host computer, wherein the keyboard is A housing having a plurality of character key switches, a plurality of function key switches and a plurality of extended function key switches; A microprocessor disposed in the housing and coupled to the plurality of character key switches, the plurality of function key switches and the plurality of extended function key switches by a scanning matrix of columns and row lines; And Each comprising a plurality of light emitting diodes coupled to the microprocessor, The microprocessor detects the operation of the plurality of character key switches and the plurality of function key switches and transmits a code signal for transmission to a host computer from a predefined portion of the conversion matrix corresponding to the first portion of the scanning matrix. Build it up, The microprocessor may also receive code signals representing a control function for a peripheral device of a host computer from an undefined portion of the transformation matrix corresponding to each of the second portions of the matrix representing the plurality of extended function key switches. Build, Each of the plurality of light emitting diodes has an anode connected to one of the scan lines of the matrix, respectively, and has a cathode connected to one IRQ terminal of the microprocessor to maintain compatibility with an XT host computer. And a expandable function key for displaying the status of selected ones of the expanded function key switches. The method of claim 1, A keyboard having an expandable function key, characterized in that there are a plurality of function keys that can be designed to meet the needs of the user on the keyboard. The method of claim 1, And said peripheral device is a multimedia or other controllable device.