KR19990015622A - Burglar alarm device embedded in car audio and its control method - Google Patents

Abstract

The present invention relates to a burglar alarm device and a method for controlling the same embedded in a car audio, comprising: a data input determination step of determining whether a predetermined key input is made after power is applied to the car audio, and a result determined in the data input determination step is determined. An error judging step of judging whether the keyed data is an error compared to the secret key input data if it is determined that there is a key input, and transmitting a frequency for transmitting a specific frequency if it is determined that the error is a result as judged in this error judging step. And a frequency sensing judging step of judging whether or not a specific frequency transmitted in this frequency transmitting step is detected, and if it is determined that a specific frequency is detected as a result of the judging in this frequency judging step, outputting a predetermined message and generating an alarm sound. Display / alarm tone output step for sending a message, and a predetermined message in this display / alarm tone output step. If the user selects a wrong function such as the user's secret key, the system operator inputs data according to the current situation. At the same time, a receiver is provided where many vehicles, such as a toll gate or a gas station, are used to easily detect the movement path of the stolen vehicle and prevent theft.

Description

Burglar alarm device embedded in car audio and its control method

The present invention relates to a burglar alarm device and a method of controlling the same embedded in a car audio, and particularly, when a wrong secret key is input by another person and is inputted by another person, the car is regarded as theft and transmitted from a car audio. Theft alarm device built in the car audio allows you to inform that the vehicle is stolen and installed at a toll gate or gas station, etc., through which the vehicle must pass through, by establishing a predetermined circuit. And a control method thereof.

In general, car audio is provided with an anti-theft device. Among these devices, a detachable key panel of a car audio or a car audio or voice recognition car audio operated when a secret key is input is developed to prevent theft.

Then look at the car audio of such a configuration as follows.

First, the detachable key panel of the car audio forms a key operation part detachably mounted on the front part of the car audio so that the user can select a function, and is separately stored when not in use from the user to prevent theft of the car audio. .

In addition, the car audio that is activated when the secret key is input allows the secret key to be arbitrarily set in the first production line. When using the car audio, the system must be operated by inputting the secret key.

In addition, the voice recognition car audio is to add a voice recognition function and a predetermined control function performed therein so that the user's voice can be recognized. Therefore, the on / off control of the car audio can be controlled using the user's voice, thereby preventing theft.

However, the car audio used to prevent theft is to control the specific function from the user, and when theft is eliminated the root cause of theft as the function of the car audio is stopped, but it prevents only part of theft It is a problem that it is necessary to prevent theft of the vehicle as well as the car audio by expanding such a function further.

The present invention has been made to solve the above problems, and if a wrong function of the user's private key is wrongly selected, it is considered as theft, and at the same time, it transmits a predetermined frequency from the car audio. It is an object of the present invention to provide a burglar alarm device and a control method using car audio that can easily detect the movement path of a stolen vehicle and prevent theft by installing a receiver in a place where many vehicles are used.

In order to achieve the above object, the present invention provides an error determination process for determining whether a user secret key input into a car audio is correct, and a frequency transmission process for outputting a specific frequency if it is determined that the error is a result of the error determination process. And a frequency sensing judging process for determining whether the specific frequency is detected by receiving a frequency transmitted in the frequency transmission process at a predetermined place, that is, a place where the use frequency of a vehicle such as a toll gate or a gas station is high, and detecting the frequency. As a result of the determination in the determination process, if a specific frequency is detected, it is characterized by consisting of an alarm output process for generating a display and an alarm sound for a predetermined alarm.

1A is a block diagram showing a transmission apparatus mounted in a car audio according to the present invention,

Figure 1b is a block diagram showing a receiving apparatus according to the present invention,

2A is a flowchart of a transmission side of the present invention;

2B is a receiving side flowchart of the present invention.

<Explanation of symbols for main parts of drawing>

1: car audio 2: key input

3: control unit 4: memory unit

5: transmitting unit 6: audio unit

7: Frequency generating element (X-tal) 10: Receiver

11: frequency amplifier 12: control unit

13: memory 14: display

15: alarm generating device 16: key input unit

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

First, an anti-theft transmission apparatus mounted in a car audio of the present invention is shown in FIG. 1A, and its configuration includes a key input unit 2 for controlling a function of the car audio 1 from a user, and the key input unit 2. A control unit 3 for receiving a control signal of the controller 3 and performing a general function therefrom, a memory unit 4 connected to an input / output port of the control unit 3 for reading and writing data, and the control unit 3 And a transmitter 5 for transmitting a specific frequency under control of the control signal and an audio unit 6 for providing a unique function of the car audio 1 under the overall control of the controller 3.

In addition, the control unit 3 is provided with a frequency generating element (7: X-tal) for providing a constant pulse in order to synchronize the production of a specific frequency and the digital signal, the transmitter 5 for radio wave transmission and reception An antenna 8 is connected, and a speaker 9 is connected to the sound output terminal of the audio unit 6.

On the other hand, the receiving apparatus for receiving the frequency transmitted by the above configuration is shown in Figure 1b and the configuration is as follows.

First, a receiver 10 for receiving a frequency of a specific band transmitted from the transmitter 5, a frequency amplifier 11 for amplifying the frequency to a predetermined level by the receiver 10, and this frequency amplifier ( A control unit 12 for overall control of the system by receiving the amplification signal of 11), a memory 13 connected to the input / output port of the control unit 12 and involved in the flow of data, and the output of the control unit 12 A display 14 and an alarm generating device 15 connected to a port so that an operator of the system can know that the vehicle is a stolen vehicle, and a key for mode selection and predetermined control selection in connection with an input terminal of the control unit 12. It consists of an input unit 16.

And the receiving unit 10 is provided with an antenna 17 for receiving a predetermined frequency band.

Then, look at the operation of the transceiver as follows.

First, when the user uses the car audio 1, the user inputs his or her private key through the key input unit 2 when the car audio 1 is used for the first time. The data is transmitted to the control unit 3 via the key input unit 2. In this case, the pulse generator 7 supplies pulses of a predetermined frequency to the controller 3 to have accurate timing during data transmission.

From this, the control section 3 applies the write signal to the memory section 4 to store the corresponding data selected by the user. When the secret key of the user is completely stored in the memory unit 4, the user performs the mode selection of the audio unit 6 through the key input unit 2.

If the user wants to use the car audio 1 again later, the car audio 1 can be used after the initial input of the secret key. If an error occurs in the input of the secret key, If the control unit 3 determines that the data received from the key input unit 2 does not match with the data corresponding to the secret key already stored in the memory unit 4, it becomes impossible to use the car audio. This is considered theft. Therefore, the controller 3 stops the function of the audio unit 6 and outputs a predetermined control signal to the transmitter 5. The transmitter 5 then transmits a frequency of a specific band, which is emitted to the outside through the antenna 8.

Therefore, the frequency emitted through the antenna 8 is tuned to the receiver 10 via the antenna 17. In this case, the tuned specific frequency is amplified to a predetermined value through the frequency amplifier 11 and then applied to the controller 12. Then, the control unit 12 performs a function as a specific frequency is received, which is to receive the message data stored in the memory 13 by outputting a read signal to the memory 13.

In this case, the received message data transmits an alarm message to a system operator via the display 14 to cope with a situation and to generate a predetermined alarm sound through the alarm generator 15.

In addition, the system operator may record the number of the vehicle and the current time at the same time as the alarm message is received. This is because the predetermined data input from the key input unit 16 is transmitted to the control unit 12. 12 applies a write signal to the memory 13, and controls to store the vehicle number and current time data therefrom.

On the other hand, it will be described based on the flowchart shown in Figure 2a as follows.

First, the process proceeds to the data input determination step S2 of determining whether there is predetermined data input to the car audio through the initial state S1 for initial setting of the system. If it is determined that predetermined data is input as a result of the data input determination step S2, the process proceeds to an error determination step S3 for determining whether the input data is an error.

Then, if it is determined that the result determined in the error judging step S3 is an error, that is, it does not coincide with the secret key already stored in the memory and the currently input data, the process proceeds to the frequency transmission step S4 and the specific frequency is reached. Will be sent periodically.

On the other hand, if it is determined that the result determined in the error determination step (S3) is not an error, it proceeds to the car audio function performing step (S5) to perform a car audio function according to the data after the input secret key.

In addition, the reception process following the transmission process will be described based on the flowchart shown in FIG. 2B.

First, the process proceeds to the frequency sensing judging step S7 for determining whether a specific frequency transmitted in the frequency transmitting step S4 is sensed through an initial state S6 that constitutes a power-up and initialization state of the system.

Then, if it is determined that the specific frequency is detected, the result determined in the frequency sensing determination step S7 proceeds to the display / alarm sound output step S8 for outputting a predetermined message and sending an alarm sound. . In this display / alarm sound output step (S8), the system operator becomes aware of the situation and can take appropriate data.

As such, when an error occurs in a secret key input for operating a car audio, the present invention regards this as theft of the vehicle by another person and sends a specific frequency therefrom, and through the toll gate or gas station that the vehicle uses a lot. By receiving the transmission frequency, it is possible to easily identify the movement route of the stolen vehicle by the transceiver of specific frequency when the vehicle is stolen, which can reduce the manpower involved in crime prevention work and prevent crime from this. It has a ripple effect.

Claims (2)

In the car audio (1) provided with a key input unit (2), A controller 3 having a batch processing function of a system by storing or comparing predetermined data input through the key input unit 2 and connected to an input / output port of the controller 3 reads input data. The memory unit 4 for writing WRITE, the stored data of the memory unit 4, and the input data through the key input unit 2 transmit a specific frequency according to mutual comparison by the control unit 3. A transmitting unit 5, a receiving unit 10 capable of receiving the transmission frequency of the transmitting unit 5 at a long distance, a frequency amplifying unit 11 for amplifying and outputting the receiving frequency of the receiving unit 10, and the frequency amplifying unit A control unit 12 for collectively controlling the alarm function from the output signal of (11), a memory 13 connected to the input / output port of the control unit 12 for inputting and outputting predetermined message data for the alarm function, and the control unit Through the output port of 12 A display 14 for outputting the data, an alarm generating device 15 for generating a predetermined alarm sound simultaneously with the output message of the display 14, and an input terminal of the control unit 12 to be fixed by a system operator. Anti-theft alarm device built in car audio, characterized in that consisting of a key input unit 16 for inputting data. Data input judgment process for determining whether there is a certain key input after power is applied to the car audio, and if the predetermined key input is determined as a result of the data input judgment process, the keyed data is compared with the secret key input data. An error judging process for determining whether an error is detected, a frequency transmission process for transmitting a specific frequency if it is determined that the error is a result of the error judging process, and determining whether a specific frequency transmitted in this frequency transmission process is detected. In the frequency sensing judgment process, the display / alarm sound output process of outputting a predetermined message and sending an alarm sound when it is determined that a specific frequency is detected as a result of the frequency sensing judgment process, Data that a system operator inputs data according to the current situation when a predetermined message is output The control method of the burglar alarm embedded in the car audio, characterized in that the storage process.