JPH075745Y2 - Operation control circuit of remote control device - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of the Invention The present invention relates to an operation control circuit of a remote control device,
In particular, it relates to an operation control circuit of a remote control device that provides security of use by using a secret code.

2. Description of the Related Art A remote control device refers to a unit that controls audio equipment, video equipment, etc., general power ON / OFF, automatic gate opening / closing, etc., at a position separated from the controlled equipment. Therefore, it is usually configured wirelessly using radio waves or infrared rays.

Problems to be Solved by the Invention Normally, the keypad of this remote control device is composed of a hand-held type and is equipped with a power key, a 0-9 numeric keypad, various other function keys, etc. Since the controlled device is operated only by operation,
There was a problem that security could not be maintained during use.
That is, it may not be possible to prevent children from operating the device for play, causing damage to the device and power consumption, and in particular, not being able to prevent viewing of an unacceptable program while the parents are absent. Could not be forbidden.

On the other hand, in the case of remote control video equipment, the controlled state is displayed only on the display panel of the video equipment and the OSD (on-screen display) on the screen. There is a troublesome problem that it is a nuisance because you have to operate while looking at the keypad that you are holding at the same time, and in the case of audio equipment there is no separate operation status display means so the user once started operation After that, after listening to the volume and sound quality, it was necessary to operate the function keys of the remote control device to adjust to a desired state, so that there was a problem that complete listening was difficult from the initial stage of operation.

The purpose of the present invention is to provide an operation control circuit of a remote control device in which security is provided so that a controlled device is not operated by an unacceptable user's operation in consideration of the above conventional problems. .

Another object of the present invention is to provide an operation control circuit of a remote control device that allows a user to know the operation state without using the operation state display means of the controlled device.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides an operation control circuit of a remote device equipped with a key operation unit and a microcomputer which outputs an operation signal in response to the operation. A receiving means for receiving the signal, a display means connected to the receiving means for decoding the operation signal of the microcomputer and displaying it on a display unit, and a receiving means connected to the receiving means for receiving from the key operation unit through the microcomputer. A secret code comparing means for setting a secret code, and comparing the input code transmitted through the key operation unit and the microcomputer with the set secret code, and connecting the secret code comparing means to the input code and the secret code comparing means. When the secret codes are judged to match each other by the secret code comparing means, the operation signal of the microcomputer is transmitted to the external signal receiving section. It is characterized by comprising a gate means.

Embodiment One preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, the operation control circuit of the remote control device of the present invention includes a microcomputer 3 for controlling the operation of the entire device, and this microcomputer 3
A key operation unit 2 for applying a reference clock to the microcomputer 3, a power key, a numeric keypad, and other function keys for encoding a user's key pressing operation and applying the same to the microcomputer 3; A register 4 for storing an operation signal output from the microcomputer 3 in response to a pressing operation,
A decoder 5 for decoding the motion signal and a display unit 6 for displaying the decoded motion signal in characters that can be recognized by the user are provided. Here, it is preferable that the key operation unit 2 is provided with a secret code setting key and a secret code reader in addition to an ordinary key.

On the other hand, a read register 7 and a setting register 9 are respectively connected to the register 4 for setting and reading a secret code, and the output side of the read register 7 and the setting register 9 match the signals output from both the registers 7 and 9. A comparator 8 for determining whether or not to perform is provided, and the comparator 8
When the output of is "1", the operation signal from the microcomputer 3 is output to the transmitting diode T-LED.

In this embodiment, three AND gates AN ₁ and A are provided so that the output from the register 4 is shifted and stored and compared in both the registers 7 and 9 when the secret code is set and read.
Although N ₂ and AN ₃ are used, each AND gate receives the output of the comparator 8 as an input, and the first AND gate AN ₁ receives an input of “1” from the input terminal B only when the secret code setting key is operated. First
The 2AND gate AN ₂ outputs the output of the microcomputer 3 to the 3rd AND gate AN ₃
Are input from the input terminal A only when the secret code reading key is operated.

The operation of the operation control circuit of the remote control device of the present invention having the above configuration will be described.

First, considering the secret code setting process, the user presses the secret code setting key of the key operation unit 2, and in response to this, each of the registers 4, 7, 9 is cleared to the initial state and the input terminal B is cleared. "1" is input, as clear state of the two registers 7 and 9 applied to the input of the comparator 8 is "1" the aND gates aN ₁ outputs a, aN _2, aN ₃ are the same become. Therefore, since "1" is input to the input terminal B and the comparator 8 to the _first AND gate AN ₁ , "1" is output to the register 9 to enable it.

Next, when the user presses the numeric keypad of the key operation unit 2 and inputs an arbitrary secret code, an output signal based on this is applied from the microcomputer 3 to the register 4 and stored in the enable setting register 9 and the decoder 5 And is displayed on the display unit 6.

Next, the operation of the process of reading the secret code for operating the controlled device with the secret code set will be described. If the user presses the secret code reading key of the key operation unit 2, the 3A
"1" is input to the input terminal A of the ND gate AN ₃ , and the third AND
Its output becomes "1" from the comparator 8 to the other input terminal of the gate AN ₃ is output is "0", the read register 7 is an enable state since again the inverted "1".

At this time, if the numeric keypad of the key operation unit 2 is pressed to input the secret code, an output signal based on the secret code is stored in the register 4 via the microcomputer 3 and displayed on the display unit 6 via the decoder 5. The output signal stored in the register 4 is applied to and stored in the read register 7 in the enabled state. At this time, the setting register 9 is stored in the input terminal B.
Since it is "0", it is in a disabled state, so the set secret number is stored as it is. The contents of the read register 7 and the setting register 9 are compared by the comparator 8, and if they match, the result is output to "1" to the _second AND gate AN2. As a result, the signal output from the microcomputer 3 is the second AND gate AN ₂
Then, the transmitting diode T-LED is driven through to generate an appropriate infrared signal based on this, and thereby sends a control signal to the controlled device.

Here, if the contents of both registers 7 and 9 are different, that is, if a number different from the set secret number is input, the comparator 8 outputs "0", so the second AND gate AN ₂ also outputs "0". As a result, the transmission diode T-LED is not driven, which makes it impossible to operate the controlled device.

On the other hand, after the secret code is read, it can be used as a general remote control device without inputting again for reading the secret code. However, the user operates the secret code reader of the key operation unit 2 by " Turns on and turns on the 3rd AND gate
At the input terminal A of AN ₃ , "1" is input. At this time, since the signals stored in both registers 7 and 9 are the same, "1" is also output from the comparator 8, so that the second AND gate AN ₂ is It will continue to output "1", which allows continuous use without additional secret number input.

The remote control device of the present invention can be configured by various methods other than the above-described method, but may be configured by a latch circuit instead of the conversion of the secret code reading key described above. It may be configured such that the secret number is re-input or a different secret number is required when the function key is operated or the specific channel is selected. For example, in the case of video equipment, users who do not know the secret number can only use the tuner function, pay the usage fee such as CCTV or videotex, or use the function requiring security only for a specific person. It can also be configured as follows.

As described above, according to the present invention, a user who does not know the secret number cannot use the controlled device or can use the controlled device only for a limited security. There is an advantage that maintenance and unfavorable use can be prevented.

Further, there is an advantage that remote control can be performed while observing only the keypad without observing the operation state display means of the main body of the device.

[Brief description of drawings]

The drawing is a circuit diagram of an embodiment of the present invention. 1 ... Oscillation part, 2 ... Key operation part, 3 ... Microcomputer, 4
...... Register, 5 ...... Decoder, 6 ...... Display, 7 ......
Reading register, 8 ... Comparator, 9 ... Setting register.

Claims (2)

[Scope of utility model registration request] 1. An operation control circuit of a remote control device comprising a key operation part and a microcomputer for outputting an operation signal in response to the operation, a receiving means for receiving the operation signal, and a receiving means connected to the receiving means. Display means for decoding the operation signal of the microcomputer and displaying the decoded signal on the display part, and a secret code which is connected to the receiving means and is received from the key operation part through the microcomputer, and is set through the key operation part and the microcomputer. A secret code comparing unit that compares the transmitted input code with the set secret code, and the secret code comparing unit is connected, and the input code and the secret code are determined to match each other by the secret code comparing unit. In this case, the remote control is characterized by comprising gate means for transmitting the operation signal of the microcomputer to an external signal receiving section. Operation control circuit of the apparatus. 2. A setting register for storing the secret code set by the secret code comparing means, a deciphering register for storing the input secret code, and a comparison of whether or not the secret codes of the both registers match. The operation control circuit of the remote control device according to claim 1, wherein the operation control circuit comprises a comparator.