KR0182935B1 - Key locking device of electronic appliances - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

It is a technology to lock the key input by ignoring the key input signal when the locking key of the remote control is pressed in the electronic device using the key.

2. The technical problem to be solved by the invention

Lock key input using remote controller to solve key operation prevention by ignoring key input when pressing key of electronic device.

3. Summary of Solution to Invention

Locking key signals to prevent key operation are remotely input by the remote controller to set the key input prevention mode, and key operation is prevented by controlling to ignore the key signal when there is a key input.

4. Important uses of the invention

Applies to all electronic devices using keys.

Description

Key input locking device of electronic device and control method

1 is a block diagram of an electronic device for locking a key input according to the present invention.

2 is a control flowchart for key input locking according to the present invention.

* Explanation of symbols for main parts of the drawings

10: remote control transmitter 12: remote control receiver

14: signal conversion unit 16: CPU

18: memory 20: key input unit

The present invention relates to an apparatus and method for locking a key input of an electronic device, and more particularly, to an apparatus and method for locking a key input by ignoring a key input signal when pressing a locking key of a remote controller in an electronic device using a key. .

In general, electronic devices such as audio systems and image processing devices used in homes operate remotely by inputting keys using a remote controller. A technique for operating a corresponding function by remotely inputting a key using such a remote controller is disclosed in Korean Patent Laid-Open Publication No. 94-10843 (94.5.26).

Recently, the flooding of adult-only programs and adult video tapes on TVs often causes teenagers to watch these programs by operating keys on the operation panel or remote control of TVs, VCRs, and so on. In addition, children are curious, and the keys of electronic devices such as televisions and VCRs are manipulated with pranks, causing electronic devices to malfunction.

It is therefore an object of the present invention to provide a key input locking apparatus and method for solving the above problems.

Another object of the present invention is to provide a key input locking apparatus and method for locking a key input using a remote controller and ignoring key input when a key of an electronic device is pressed.

The key input locking device of the present invention for achieving the above object is a remote control transmitter for generating a locking key signal for preventing key operation and transmitting as an infrared signal, and receiving the infrared signal received from the remote control transmitter for a remote control code sequence And a controller for controlling a key operation by receiving a remote controller code string signal corresponding to a locking key signal from the remote controller receiver.

The key input locking method of the present invention for achieving the above object comprises the steps of remotely input the locking key by the remote control, receiving the remotely input locking key signal and searching for the presence or absence of the key input prevention mode setting; Canceling the key input prevention mode when the key input protection mode is set in the key input protection setting mode search process, and key input when the key input protection mode is not set in the key input protection setting mode search process. And a process of setting the prevention mode and controlling to ignore the key signal when there is a key input after setting to the key input prevention mode.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a key input locking device of an electronic device according to the present invention, wherein the remote controller 10 generates a function key for performing each function and a locking key signal for preventing key input to generate a PPS (Pulse). Position Modulation) converts the code and modulates it into an infrared signal. The remote controller 12 receives an infrared signal received from the remote controller 10 and converts the signal into a current. The signal converting unit 14 amplifies the waveform output after the current output from the remote control receiving unit 12, decodes the waveform-formed signal and outputs a remote control code string signal. The key input unit 20 generates a function key for performing each function and a locking key signal for preventing a key input. The CPU 16 controls to ignore the key signal input according to a predetermined program in response to the locking key signal input from the signal converting unit 14 and the key input unit 20. The memory 18 stores a key input locking program.

2 is a control flowchart for key input locking according to the present invention, a process of checking whether a locking key signal is input when a key signal is input, and a process of checking whether a key input prevention mode is set when the locking key signal is input And setting a key input protection mode when the key input protection mode is set, setting a key input protection mode when the key input protection mode is not set, and setting the key input protection mode. After that, the process of ignoring the key input when the key signal is input and performing the corresponding function key operation when the key signal is input after the key input prevention mode is released.

One preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 2 above.

First, when the user presses the locking key of the remote control transmitter 10, the locking key signal generated from the remote controller 10 is converted into a code by PPS (Pulse Position Modulation) and then modulated and transmitted as an infrared signal. At this time, the remote control receiver 12 receives the infrared signal transmitted from the remote control transmitter 10, converts it into a current, and outputs it to the signal converter 14. The signal converter 14 amplifies the current output from the remote controller receiver 12 and then waveform-shapes the signal. The decoder 14 decodes the waveform-shaped signal and outputs a remote controller code string signal to the CPU 16. At this time, the CPU 16 checks whether the key signal is input from the signal conversion unit 14 in step 21 and proceeds to step 22 if the key signal is not input. In step 22, the CPU 16 checks whether the input key signal is a locking key signal, and proceeds to step 27 when it is not a locking key signal. In step 27, the CPU 16 checks whether the key input prevention mode is set. If it is set in the key input prevention mode, the CPU 16 proceeds to step 28, ignoring the key input, and ends the program. However, if the key input prevention mode is not set in step 27, the process proceeds to step 29 to perform an operation on the corresponding function key. Here, the locking key of the remote control transmitter 10 or the key input unit 20 is set to the locking mode when pressed once, and pressed again to release the locking mode.

If the input key signal is the locking key signal in step 22, the method proceeds to step 23 and checks whether the current key input prevention mode is set. Proceed to step 26. However, if the key input prevention mode is not set in step 23, the method proceeds to step 24 to set the key input prevention mode. Thereafter, in step 26, it is checked whether the key signal is input from the signal conversion unit 14 or the key input unit 20. If no key signal is input, the process returns to step 21 and repeats the above-described operation. However, if the key signal is input in step 26, the process proceeds to step 27 and checks whether it is set to the key input prevention mode. In step 28, the CPU 16 disregards the key signal input from the signal conversion unit 14 or the key input unit 20 and terminates the program. If the key input prevention mode is not set in step 27, the process proceeds to step 29 to perform a function key operation and terminate the program.

In the present invention, the locking key is mounted only on the remote control so that the device does not operate even if the remote control is removed.

You can also lock the electronic devices installed in public places so that no one can manipulate them.

As described above, in the present invention, when the locking key is set in the key input unit of the remote controller of the electronic device and the locking key is set to the locking mode, the key operation is prevented even when the key is operated. It can be prevented from operating, there is an advantage that can prevent other people to operate electronic devices installed in public places.

Claims (2)

1. A key input locking device for an electronic device, comprising: a remote control transmitter for generating a locking key signal for preventing key operation and transmitting it as an infrared signal, a remote controller receiver for receiving and converting an infrared signal received from the remote controller transmitter into current; A signal converting unit for amplifying a current output from the lomocon receiver and then performing waveform shaping, decoding the waveform-formed signal and outputting a remote control code string signal, and a remote control code corresponding to a locking key signal from the signal converting unit Apparatus comprising a control unit for receiving a thermal signal to control to prevent key operation. A key input locking method of an electronic device, comprising: remotely inputting a locking key by a remote controller; receiving a remotely input locking key signal to search for a key input prevention mode setting; and preventing the key input. Canceling the key input protection mode when the key input protection mode is set in the setting mode search process, and setting the key input protection mode when the key input protection mode is not set in the key input protection setting mode search process. And controlling to ignore a key signal when there is a key input after setting to the key input prevention mode.