KR19990042853A - Key input device and method with multi-input function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key input device having a multi-input function, and more particularly, to a device for performing a multi-input function. In particular, the present invention relates to a key set up by a key matrix during user operation. A key input unit 10 for generating a code value; A display unit 30 operated by a predetermined control signal to display a function indicated by a key; Is connected between the key input unit 10 and the display unit 30, and receives a signal for the key code value output from the key input unit 10, different functions are selected according to the time the same key is continuously pressed And a microcomputer 20 for outputting a predetermined control signal indicating the selected function to the display unit 30, and a key input device having a multi-input function, wherein the same key is continuously pressed. It is a key input method having a multi-input function, characterized in that for detecting the time to perform different functions according to the continuous pressing time of the same key.

The present invention has the effect of being able to allocate a large number of functions to one key, thereby making it possible to save space and reduce costs.

Description

Key input device and method with multi-input function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for performing a multi-input function in a key input device having a multi-input function. In particular, the present invention relates to detecting a pressed time of the same key and performing different functions according to the pressed time. It is to.

As is well known, a key input device refers to a device capable of inputting a control command to an electronic device through a key operated by a user. An electronic product having such a key input device is a digital video disc player (DIGITAL VIDEO DISK PLAYER). ), A compact disc player (COMPACT DISK PLAYER), a television (TELEVISION), audio (AUDIO) and the like.

Such an electronic device includes a key input device on one side of a product, or inputs a user's control command to the electronic device through a remote controller.

That is, when the code value for the corresponding key value is output according to the selection of the key composed of KEY MATRIX, it is received by the input device (receiving device in the case of the remote control device) and indicated by the corresponding key value. Function was performed.

However, the above-described key input device has a problem in that as the functions of the electronic device increase, the number of keys indicating the function increases, so that a device capable of realizing multiple input functions with one key has been developed and used.

For example, by operating the key value in the toggle mode (TOGGLE MODE) to realize the multi-input function, or by installing a separate function switch key to use two or more function keys depending on whether the function switch key is selected Proposed.

However, when the key input device having the conventional multi-input function as described above is realized in the multi-input function by using the toggle mode, first, there is a problem that it cannot be used as an input key of two or more functions. In the case of realizing the multi-input function by installing the function switching key, there is a problem that it is inconvenient to operate a separate function switching key.

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above. In particular, by detecting the pressed time of the same key, and performing different functions according to the pressed time, a plurality of functions can be performed with one key. It is to provide a "key input device and method having a multi-input function".

In order to achieve the above object, the present invention " key input device having a multi-input function " includes a key input unit which is composed of a plurality of keys operated by a user and generates a key code value set by a key matrix during user operation; ; A display unit operated by a predetermined control signal to display a function indicated by a key; Connected between the key input unit and the display unit, receives a signal for a key code value output from the key input unit, and allows a different function to be selected according to a time when the same key is continuously pressed, indicating a predetermined function; Characterized in that the technical configuration is configured to include a microcomputer for outputting a control signal of the display unit.

In addition, the display unit is composed of a plurality of light emitting diodes (LIGHT EMITTING DIODE hereinafter referred to as LEDs), and among a plurality of functions of a key, it is characterized by displaying a specific function selected by a user.

For example, if there are four functions assigned to one key, it is composed of four LEDs that indicate whether each function is selected for the key by lighting or flashing, which function is indicated by the current key. To display.

In addition, the key code value output when each key is pressed in the key input unit is characterized in that the same key code value is repeatedly outputted when the same key is continuously pressed.

In addition, the key code value output when the respective keys are pressed is a signal indicating that the same key is continuously pressed to a signal indicating the corresponding key code value when the same key is continuously pressed. In addition, it characterized in that the output.

On the other hand, the present invention "key input method having a multi-input function" is to detect the time when the same key is continuously pressed, and to perform different functions in accordance with the continuous pressing time of the same key. It features.

In addition, when different functions are to be performed according to the continuous pressing time of the same key, the selected function is characterized by displaying through the display means.

Such a "key input device and method having a multi-input function" according to the present invention, when a user presses a key of the key input unit, the microcomputer detects the time that is continuously pressed, and different functions depending on the length and length of the pressing time After assigning to perform, the selected function is displayed through the LED of the display unit, so that a plurality of functions can be performed with one key.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the configuration of the present invention "key input device having multi-input function "

2 is a control flow diagram showing an embodiment of the present invention "key input method having a multi-input function",

3 is a view schematically showing the configuration of a key input unit and a display unit among the "key input apparatuses having a multi-input function" of the present invention;

4A is a diagram schematically showing a configuration of a key code value;

4B is a view schematically showing an example of configuration of a key code value according to the present invention;

4B is a diagram schematically showing another example of the configuration of a key code value according to the present invention;

<Explanation of symbols for main parts of the drawings>

10: key input unit 11: key

20: microcomputer 30: display unit

100: first function operation step 200: second function operation step

300: third function operation step 400: fourth function operation step

Hereinafter, with reference to the accompanying drawings, the configuration, operation and operation effects for an embodiment according to the technical idea of the present invention "key input device and method having a multi-input function" configured as described above in detail as follows.

<Example>

In the present embodiment, as shown in Fig. 3, the key input unit has three keys 11a, 11b, and 11c, so that one key performs four functions.

Therefore, the LED of the display part which shows the selected function of each key consists of four for each key.

In the present embodiment, when the same key is continuously pressed, the same key code value is repeatedly output.

4A is a diagram showing a signal format of a key code value output when a specific key of a remote controller is pressed. The key code value includes a header, a custom code, data, and the like. have.

Therefore, when the same key is continuously pressed, a key code value composed of "header + custom code + data" is repeatedly output as shown in Fig. 4B.

First, as shown in FIG. 1, the signal output terminal of the key input unit 10 is connected to the signal input terminal of the microcomputer 20, and the control signal output terminal of the microcomputer 20 is connected to the control signal input terminal of the display unit 30. This embodiment is constituted.

Here, the key input unit 10 is composed of a key matrix and an electronic circuit for controlling the same, and is composed of a known circuit for outputting a specific key code value for the selected (pressurized) key.

The LED of the display unit 30 is connected to the control signal output terminal of the microcomputer 20 through a known signal distribution device or the like, and is configured to be turned on / off in accordance with the control signal of the microcomputer 20.

Hereinafter, the operation of the present embodiment configured as described above will be described.

First, as shown in Figure 2, when the power is applied to the "key input device having a multi-input function" of the present invention, the microcomputer 20 performs an initialization process, and then a specific key from the key input unit 10 (In this description, it is assumed that " a " key 11a is selected.) If it is determined whether a key code value for a key code value is input or not, the key code value is determined to be input from the key input unit 10. It is determined whether or not the same key code value is repeatedly input for a predetermined time (A time) or more continuously.

At this time, if the same key code value is not repeatedly input for more than A hours, LED1 of the display unit 30 indicating that the first function is selected is turned on.

Then, the user becomes aware that the first function of the "ga" key 11a has been selected from the lighting of the LED1. If the user presses the same "ga" key 11a again within a predetermined time, " The signal for the first function of the key "a" is input to the electronic device through the microcomputer 20 or the microcomputer 20 to perform the selected function.

In addition, after performing the selected function, after clearing the function indicated by the " a " key 11a, the first function of repeating the operation of detecting whether or not there is a key code value newly input is performed. The operation step 100 will be performed.

In the first function operation step 100, after the first function is selected, if the " ga " key 11a is not pressed again for a predetermined time, the newly entered key code is cleared after clearing the selected first function. The operation of detecting whether there is a value is repeatedly performed.

On the other hand, as a result of performing the first function operation step 100, if it is determined that the same key is pressed repeatedly for more than A time, the same key code value is repeatedly input, the second function operation step 200 is performed.

That is, after the LED2 indicating that the second function is being selected is turned on, it is detected whether the pressed time is greater than or equal to B hours, and when less than the B time, it operates as a key for inputting the second function.

Then, the user becomes aware that the second function of the "ga" key 11a has been selected from the lighting of the LED2. If the user presses the same "ga" key 11a again within a predetermined time, " The signal for the second function of the key "11a" is input to the electronic device through the microcomputer 20 or the microcomputer 20 to perform the selected function.

In addition, after performing the selected function, after clearing the second function indicated by the "key" key 11a, the process returns to the first function operation step 100.

In addition, in the second function operation step 200, after the second function is selected, if the "ga" key 11a is not pressed again for a predetermined time, the first function is cleared after clearing the selected second function. The operation step 100 is returned.

On the other hand, as a result of performing the second function operation step 200, when it is determined that the same key is pressed repeatedly for more than B hours, the same key code value is repeatedly input, the third function operation step 200 is performed.

That is, after turning on LED3 indicating that the third function is being selected (in this case, LED2 turns off), it is detected whether or not the pressurized time is more than C hours, and if it is less than the C time, the third function is It acts as a key to enter.

Then, the user becomes aware that the third function of the "key" key 11a has been selected from the lighting of the LED3. If the user presses the same "key" key 11a again within a predetermined time, " The signal for the third function of the key “11a” is input to the electronic device through the microcomputer 20 or the microcomputer 20 to perform the selected function.

In addition, after performing the selected function, after clearing the third function indicated by the "ga" key 11a, the process returns to the first function operation step 100.

At this time, in the third function operation step 300, after the third function is selected, if the "ga" key 11a is not pressed again for a predetermined time, the first function is cleared after clearing the selected third function. The operation step 100 is returned.

On the other hand, as a result of performing the third function operation step 100, if it is determined that the same key is pressed repeatedly for more than C hours, the same key code value is repeatedly input, the fourth function operation step 400 is performed.

That is, it turns on LED4 indicating that the fourth function is being selected (in this case, LED3 turns off), indicating that it is selected as the fourth function, and then operating as a key for inputting the fourth function.

Then, the user becomes aware that the fourth function of the "ga" key 11a has been selected from the lighting of the LED4. If the user presses the same "ga" key 11a again within a predetermined time, " A signal for the fourth function of the key “11a” is input to the electronic device through the microcomputer 20 or the microcomputer 20 to perform the selected function.

In addition, after performing the selected function, after clearing the fourth function indicated by the "key" key 11a, the process returns to the first function operation step 100.

In addition, in the fourth function operation step 400, after the fourth function is selected, if the "ga" key 11a is not pressed again for a predetermined time, the first function is cleared after the selected fourth function is cleared. The operation step 100 is returned.

Here, the length and length of the time length of said A time, B time, and C time are "A time <B time <C time".

In other words, after detecting the duration of pressurization of a specific key pressed by the user using the internal clock of the microcomputer 20 or the timer function of the microcomputer 20, the pressed time is A time. If it is shorter, the first function is performed. If the pressurized time is more than A hour or less than B hour, the second function is performed. If it is more than B hour and less than C hour, the third function is performed. In order to perform the fourth function, more functions can be assigned to one key according to the degree of time division.

On the other hand, when a particular function is selected according to the time the specific key is pressed, this selected function is indicated through the LED, and after the specific function is selected, there is a user input within a predetermined time to perform the corresponding function, Alternatively, if there is no user input within the predetermined time, the operation of clearing the value for the selected function and then returning to the first function operation step 100 is repeated.

Therefore, a large number of functions can be assigned to one key, thereby saving space and reducing costs.

However, in the above embodiment, although one key is configured to perform four functions, it is to be noted that the number can be added or subtracted without departing from the technical idea of the present invention.

In addition, in the above embodiment, after performing a selected function, or after a certain time after the function selection is completed, the operation to return to the initial stage after clearing the selected function, but to the initial stage without clearing the selected function By returning it, it turns out that convenience in use can be attained.

In the present embodiment, the same key code value is outputted when the same key is continuously pressed, but as shown in FIG. 4C, a signal indicating that the same key is continuously being pressed is output. Make sure you can.

As described above, the present invention "key input device and method having a multi-input function", in particular, it is possible to assign a large number of functions to one key, the effect that can save space and cost There is.

Claims (6)

A key input unit comprising a plurality of keys operated by a user, the key input unit generating a key code value set by a key matrix during user operation; A display unit operated by a predetermined control signal to display a function indicated by a key; Connected between the key input unit and the display unit, receives a signal for a key code value output from the key input unit, and allows a different function to be selected according to a time when the same key is continuously pressed, indicating a predetermined function; And a microcomputer for outputting a control signal to the display unit. The key input device of claim 1, wherein the display unit is configured of a plurality of light emitting diodes to display a specific function selected by a user among a plurality of functions of a key. The multi-function function according to claim 1, wherein the key code value output when each key of the key input unit is pressed is repeatedly output the same key code value when the same key is continuously pressed. Key input device having a. The key code value output when the respective keys are pressed in the key input unit. The same key is continuously pressed to a signal indicating a corresponding key code value when the same key is continuously pressed. A key input device having a multi-input function, characterized in that for outputting by adding a signal indicating. Detecting a time when the same key is continuously pressed, and performing different functions according to the continuous pressing time of the same key. The key input method according to claim 5, wherein when the different functions are performed according to the continuous pressing time of the same key, the selected function is displayed through the display means.