JPH04232147A - Security device - Google Patents

Abstract

PURPOSE:To lessen the burden of entertainment apparatus interms of a space and make normal operation of the apparatus difficult when it is stolen by a robber. CONSTITUTION:When arm operation or dis-arm operation is performed by a controller 1, a security controller 10 outputs an anti-theft-ON command or anti-theft-OFF command including a specified ID code to a car audio system 11. An ID code registration/deletion part 22b registers the ID code included in the anti-theft-ON command in a programmable ROM 13 when the anti-theft- ON command is input, and when the anti-theft OFF command is input, the code included in the anti-theft-OFF command is collated with the ID code registered in the programmable ROM 13. When it is inconformity therewith, the registration ID code is deleted. A control forbidding part 22c servers to forbid control operation while the ID code is registered in the programmable ROM 13.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security device, and more particularly to a remote-controlled security device for use in vehicles, homes, etc. in which various entertainment devices such as audio equipment, TV equipment, and video equipment are installed.

0002

2. Description of the Related Art There is a remote control car security device for preventing the vehicle itself and various car accessories installed in the vehicle from being stolen. This car security device is equipped with an abnormality sensor such as a shock sensor or motion sensor that detects when an abnormality occurs in the vehicle, and a siren that generates an alarm. When you operate the arm with the device, the car security device itself receives the arm operation command and enters the arm state (warning state), inputs the detection signal from the abnormality sensor to monitor whether there is an abnormality, and if there is an abnormality. It is designed to exterminate bandits by controlling the siren.

On the other hand, as a countermeasure against thieves breaking into the car despite the presence of car security devices, anti-theft devices ( anti-theft system). This anti-theft device connects the car audio device to the car battery (+B power supply) in a separate system from the ACC power supply in advance, and then disconnects the +B power supply after the driver turns off the engine key and the ACC power supply is turned off. A power disconnection sensor circuit monitors the presence or absence of the +B power supply when the thief removes the car audio device from the vehicle and detects that the +B power supply has been disconnected.The car audio device's microcomputer stores a flag in the memory (RAM), for example, indicating that the power has been disconnected. stand up.

[0004] Later, after the thief takes the car audio device home, when he connects it to the +B power source or the ACC power source and turns on the power, the microcomputer first determines whether a flag indicating power off is set in the memory. When the power-off flag is not set, normal program processing is executed and normal operation is achieved; however, when the power-off flag is set, normal program processing is stopped and normal operation does not occur.

[0005] In this way, even if a thief steals a car audio device equipped with an anti-theft device, the device is made useless, thereby discouraging the thief and thereby preventing theft.

However, in the above-mentioned conventional anti-theft device, in order to enable the microcomputer to perform predetermined processing after the +B power supply is turned off, it is necessary to install a battery-powered backup power circuit in the car audio device in advance. This, together with the power disconnection sensor circuit, places a burden on the device in terms of space, and if a thief who takes the car audio device home disconnects the backup power circuit, the flag data in the memory will be erased, making it impossible to prohibit normal operation. There was a problem.

[0007]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a security device that reduces the burden on the space of an entertainment device and makes it difficult for a thief to operate the device properly even if the device is stolen.

[0008]

[Means for Solving the Problems] The above problem is solved in one aspect of the present invention, which includes: a hand-held controller for arm/disarm operation; an abnormality detection means for detecting the occurrence of an abnormality; and an alarm means for issuing an alarm. The security device body is equipped with a security device body that performs abnormality monitoring and alarm control according to the operation of the handheld controller, and the security device body includes a receiving means that receives a transmission signal from the handheld controller, and a warning unit that performs alarm control when the receiving means receives an arm operation command. In a security device that includes a security control means that performs abnormality monitoring and predetermined alarm control when an abnormality occurs and disarms the alarm when a disarm operation command is received, the security device main body is connected to one or more entertainment devices. At the same time, the security control means of the security device body outputs an anti-theft on command including a predetermined ID code to each entertainment device when the arm operation command is received, and outputs a predetermined ID code when the disarm operation command is received. The anti-theft-off command including the code is output to each entertainment device, and each entertainment device stores the ID code included in the anti-theft command in its programmable ROM and, when the anti-theft command is input, the programmable ROM.
When an anti-theft-off command is entered, the ID code included in the anti-theft-off command is checked against the ID code registered in the programmable ROM, and when a match is found, the registered ID code in the programmable ROM is erased.
Code registration/erasing means and ID in programmable ROM
This is achieved by providing a prohibition means for prohibiting the operation of the entertainment device when the code is registered.

In another aspect of the present invention, the security device main body is provided with operation means for setting an ID code, and the security control means outputs an anti-theft-on command and an anti-theft-off command including the set ID code. This is achieved by doing the following.

0010

[Operation] According to one aspect of the present invention, when an arm operation or a disarm operation is performed using a hand-held controller, the security device body enters an alert state or an alert disarm state, and the security control means includes a predetermined ID code. When an anti-theft-on command or an anti-theft-off command is output to the entertainment device, and the entertainment device inputs the anti-theft-on command, it registers the ID code included in the anti-theft-on command in the programmable ROM and prohibits the operation. When a theft-off command is input, the ID code included in the anti-theft-off command is compared with the ID code registered in the programmable ROM, and when they match, the registered ID code in the programmable ROM is erased and the operation inhibition is canceled. As a result, once the ID code is registered in the programmable ROM, the ID code will not disappear even if the backup power supply is cut off, and the normal operation of the entertainment device can be reliably prevented until the same ID code is input thereafter. This eliminates the need for a battery-powered backup power supply circuit in addition to a power-off sensor circuit, saving space in entertainment equipment. Furthermore, it is difficult to erase the ID code of a programmable ROM without a handheld controller for arm/disarm operations and the security device itself, but since the handheld controller is carried by the user, it is impossible for thieves to use the entertainment device. It is possible. Further, arm/disarm operations for the security device body and anti-theft on/off operations for the entertainment device do not have to be performed separately, which saves time and effort.

According to another aspect of the present invention, the security control means outputs an anti-theft-on command and an anti-theft-off command including an ID code set in advance by the operating means. As a result, even if a thief obtains the handheld controller and the main body of the security device, it is difficult to find the ID code registered in the programmable ROM, making it nearly impossible to use the entertainment device.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of main parts showing the configuration of a remote control type car security device according to the present invention.

In the figure, numeral 1 is a hand-held operating device for performing arm/disarm operations, 1a is an arm key, and 1b is a disarm key. The hand controller 1 transmits an operation command (command code) corresponding to the operation on radio waves. 2 is an antenna, 3a to 3n are an ACC switch sensor, a key sensor (provided on the key cylinder), a door sensor,
It is used to determine whether a person (driver or passenger) sensor or the like satisfies the conditions for transition to an arm state (warning state). 4a to 4n detect abnormalities occurring in the vehicle using shock sensors, glass sensors, motion sensors, etc. 5 is a siren, and a car security device main body 6, which will be described later.
Driven by.

Reference numeral 6 denotes the main body of the car security device, which changes to an arm state in response to remote control operation of the hand-held controller 1, monitors abnormalities, controls alarm generation when an abnormality occurs, or returns to a disarm state (warning release state). I do things. A receiving section 7 amplifies and detects the signal received by the antenna 2 and outputs the received signal. Reference numeral 8 represents an operation unit through which the driver performs an ID code setting operation, and reference numeral 9 represents a siren drive unit that drives the siren 5.

10 is a security controller having a microcomputer configuration, 10a is a decryption unit that decodes the operation command from the received signal, 10b is an ID code registration unit that registers the ID code set in the operation unit 8, and 10c is the decrypted code. When the operation command is an arm operation command, if a predetermined condition is met, the arm state is established and abnormality monitoring and alarm generation control are performed when an abnormality occurs.When the operation command is a disarm operation command, the arm state is released and the disarm state is performed. This is the control section. The control unit 10c outputs an anti-theft-on command including a setting ID code to a car entertainment device (to be described later) when in the arm state, and outputs an anti-theft-off command including the setting ID code when in the disarm state.

Reference numeral 11 denotes a tuner deck type car audio device, which is an example of car entertainment equipment. Reference numeral 12 indicates an operation unit for controlling power on/off, channel selection, tape fast forwarding, rewinding, etc., and 13 indicates a programmable ROM (in this case, EEPRO) for registering an ID code.
14 is a radio reception section, 15 is a tape playback section, 16 is a changeover switch, 17 is an amplifier, 18 is a display section, 19 is a main stabilized power supply circuit that creates a predetermined DC voltage from an ACC power supply, 20 2 is a power relay switch provided between the ACC power supply and the main stabilized power supply circuit 19;
1 is a sub-stabilized power supply circuit that creates a backup DC power source from the +B (car battery) power source, 22 is a system controller configured with a microcomputer, and 22a is the operation unit 1
A control section 22b performs predetermined control operations on the power relay switch 20, radio reception section 14, tape playback section 15, changeover switch 16, etc. according to the operation of 2, and 22b follows the anti-theft-on command input from the car security device main body 6. The ID code included in the anti-theft-on command is registered in the programmable ROM 13, and according to the anti-theft-off command, the ID code included in the anti-theft-off command is compared with the ID code registered in the programmable ROM 13, and when they match, the programmable ROM 13 is programmed. The ID code registration/erase section 22c that erases the ID code registered in the ROM 13 is a control prohibition section that prohibits the control section 22a from performing control operations when the ID code is registered in the programmable ROM 13.

A speaker 23 is driven by the amplifier 17 and is installed at a predetermined location in the vehicle. 24 is an ACC switch that turns on and off the ACC.

In this embodiment, both the anti-theft-on command and the anti-theft-off command are the ID codes themselves, and the system controller 22 is a programmable ROM.
13, the ID code entered in the unregistered state is set as an anti-theft on command, and the programmable ROM is
It is assumed that the input of the ID code in the state where the ID code is registered in 13 is distinguished as an anti-theft-off command.

FIG. 2 is a flowchart showing the operation of the system controller 22 of the car audio device 11, and FIG. 3 is a flowchart showing the operation of the security controller 10 of the car security device body 6. The following description will be made with reference to these figures.

It is assumed that the system controller 22, programmable ROM 13, and display unit 18 of the car audio device 11 are supplied with a backup voltage created in advance from the +B power supply, and that the car security device main body 6 is initially in a disarmed state. , and no ID code is registered in the ID code registration section 10b. In addition, the programmable RO of the car audio device 11
It is assumed that the ID code of M13 is also in an unregistered state.

When the driver turns the engine key to turn on the ACC switch 24 and then presses the power key on the operation unit 12 to turn on the power, an operation command is input to the control unit 22a of the system controller 22 ( Step 101
, 102). At this time, the control prohibition unit 22c determines whether the ID code is registered in the programmable ROM 13 (step 103). Since it is not registered here, the control unit 2
The control operation of 2a is not prohibited, and the power supply relay switch 20 is turned on by the control unit 22a to supply DC stabilizing voltage to each part of the set (step 104). Next, if no cassette is inserted into the tape playback section 15, the control section 22a switches the changeover switch 16 to the radio side. As a result, a radio broadcast is played from the speaker 23 (steps 105 and 106).

[0022] When the operating section 12 is operated to perform a tuning operation in this state, the control section 22a performs tuning control on the radio receiving section 14 (steps 107 and 108). When the driver inserts a cassette into the tape playback section 15, the control section 22a puts the tape playback section 15 into the PLAY state and switches the selector switch 16 to the tape side. This will cause speaker 2
Tape performance starts from 3 (steps 109, 110)
.

When a fast-forward operation is performed on the operating section 12, the control section 22a performs fast-forward control on the tape reproducing section 15 to fast-forward the tape (steps 111, 112). Similarly, performing a rewind operation rewinds the tape. When the driver takes out the cassette, the control unit 22a returns to the original radio reception state (steps 113, 106).
.

Thereafter, when the driver presses the power key on the operation section 12 to stop the car audio, the control section 22a
Turn off the power relay switch 20 to turn off the power (
Steps 114, 115). Then, when you turn the engine key and turn off the ACC switch 24, the system controller 22
The programmable ROM 13 continues to be energized.

When the driver leaves the vehicle and wants to activate the car security device, he first sets an ID code of a predetermined number of digits on the operating section 8 of the car security device main body 6, and then the ID code of the security controller 10 is set. Registered in the registration unit 10b (steps 201, 202
).

After the driver removes the engine key, exits the vehicle, closes and locks the door, and then presses the arm key 1a of the hand control device 1 to put the car security device in the arm state, the arm that is carried on the radio wave Operation command is issued. This radio wave is received by the antenna 2 and then received by the receiving section 7 of the car security device main body 6, the received signal is input to the security controller 10, and the arm operation command is decoded by the decoding section 10a. The decoded arm operation command is sent to the control section 10c. When the control unit 10c receives an arm operation command, it determines whether a predetermined arming condition is satisfied based on the outputs of the sensors 3a to 3n (steps 203 and 204).

When predetermined conditions such as the ACC switch 24 is turned off, the key is removed from the key cylinder, the door is closed, and no one is inside the vehicle are met, the arming condition is established and the control unit 10c The arm state is entered (step 205), and if the ID code is registered in the ID code registration section 10b, the ID code is output as an anti-theft on command to the system controller 22 of the car audio device 11 (steps 206, 207). ).

When the system controller 22 inputs the ID code, the system controller 22 stores the ID code in the programmable ROM 13.
Since the code is not registered, the input ID code is treated as an anti-theft-on command. That is, when the ID code registration/erasing unit 22b of the system controller 22 inputs an ID code while the ACC power is off,
13, determine whether the ID code has been registered (step 116~
118), since NO, the input ID code is written to the programmable ROM 13 and registered (step 119).
). This results in an anti-theft-on state.

When the vehicle is in the arm state, the control section 10c of the security controller 10 monitors the presence or absence of any abnormality in the vehicle from the outputs of the sensors 4a to 4n (step 208). If the vehicle experiences a shock or the glass is broken,
When the robber is moved, it is determined that an abnormality has occurred, and the siren driving unit 9 is controlled to generate an alarm to sound the siren 5 to exterminate the robber (step 209).

When the driver returns to the vehicle, if there is no particular abnormality, the driver presses the disarm key 1b of the handheld operating device 1 to perform a disarm operation before opening the door. Then,
A disarm operation command is emitted from the handheld controller 1 on a radio wave, received by the antenna 2, received by the receiver 7 of the car security device main body 6, and then disarmed by the decoder 10a of the car security controller 10. The arm operation command is decoded and input to the control unit 10c.

Control unit 1 into which the disarm operation command is input
0c transitions to a disarmed state (step 210,
211), if the ID code is registered in the ID code registration section 10b, the registered ID code is output to the car audio device 11 as an anti-theft off command (steps 212, 213), and a matching signal is output for a certain short period of time. Wait for input (step 214).

When the system controller 22 of the car audio device 11 inputs the ID code, since the ID code has been registered in the programmable ROM 13, the input ID code is treated as an anti-theft-on command. That is, when the ID code is input while the ACC power is off, the ID code registration/erase unit 22b of the system controller 22 determines whether the ID code has been registered in the programmable ROM 13 (steps 117 and 118), and returns YE.
Therefore, the ID code input this time is then compared with the ID code registered in the programmable ROM 13 to determine whether they match (steps 120 and 121). When a match occurs, the ID code registered in the programmable ROM 13 is cleared and erased, and a match signal is output to the security controller 10 of the car security device main body 6 (
Steps 122, 123). As a result, the anti-theft off state is entered, and if the power key is pressed after turning the ignition key and turning on the ACC switch 23, the set will return to the normal operating state as described above (steps 101 to 1).
04).

If there is a mismatch in step 121, the ID code registration/deletion unit 22b does not clear the ID code and output a matching signal, but outputs an alarm display signal to the display unit 18 and displays an error message. (Step 1224, waits for the input of a new ID code. Then, when a match is found with the newly input ID code, the ID code in the programmable ROM 13 is erased (Steps 117, 118, 120, 121). ), outputs a matching signal and erases the error message display (step 1
23, 125, 126)).

Control unit 1 of security controller 10
0c deletes the ID code registered in the ID code registration section 10b (step 215) and returns to step 201 when a matching signal is input within a certain period of time (short time) after outputting the anti-theft off command. and perform the same processing as described above. If a matching signal is not input within a certain period of time, the control unit 10c waits for a relatively long time before proceeding to step 217, and when a disarm operation command is input after a new ID code is set. , outputs a new anti-theft-off command (ID code) (steps 217 to 219, 213).

If a thief breaks into the car and removes the car audio device 11 from the vehicle while the driver is away from the vehicle, the +B power supply is cut off and the system controller 2
2. The programmable ROM 13 and the display section 18 are turned off from the backup power supply and become inactive. However, since the programmable ROM 13 in which the ID code is registered is non-volatile, the ID code will not be erased. After stealing the car audio device 11, the thieves removed the car battery and ACC.
When the power key of the operating section 12 is pressed to operate the set, an operating command is input to the control section 22a (steps 101 and 102). At this time, the control prohibition section 2
2c determines whether the ID code is registered in the programmable ROM 13 (step 103), and since it has been registered, the control unit 22a is prohibited from performing a control operation. Therefore, the control section 22
In case a, the set remains inactive without performing power-on control. As a result, the thief cannot use the set. In order to operate the set, it is necessary to erase the ID code recorded in the programmable ROM 13.
This is possible only by using the car security device main body 6, and since the driver takes the handheld controller 1 with him when leaving the vehicle, the set can be easily kept in an inactive state.

Even if the thief has already obtained the handheld controller 1 and the car security device body 6 as shown in this embodiment, he can set the same ID code as the one set by the driver and perform the disarm operation. If the ID code set by the thief is different from the ID code registered in the programmable ROM 13, the set cannot be activated unless
Since the next ID code is not output until a certain period of time has elapsed, it is extremely difficult for a thief to turn off the anti-theft state of the set.

Note that the car audio device 11 can be used alone or can be combined with a car security device later.

In the above-described embodiment, even if the anti-theft is turned on, no particular display is displayed, but the display shows that the anti-theft is turned on to appeal to thieves and discourage them from stealing the set. It's okay. In addition, the car audio device is provided with an alarm sound signal generation section, the output side is connected to the input side of the amplifier, the alarm sound signal generation section and the amplifier are powered by a +B power supply, and the ID code of the anti-theft-off command is stored in a programmable ROM. When the ID codes registered in When this occurs, an alarm signal may be output from the car security device main body to the system controller of the car audio device, and an alarm sound may be generated under the alarm control of the system controller.

Furthermore, in the embodiment described above, after outputting the anti-theft off command, the security controller
I tried to erase the code (step 215 in Figure 3).
), the same ID code may be outputted unless the driver performs a change operation without erasing it, or it may be possible to output a fixed ID code individually determined for each car security device body in advance. output, or I
A fixed command code related to anti-theft is prepared separately from the D-code, and the command code + ID code is output as an anti-theft on command or anti-theft off command, and the ID code registration /
The erase part is the command code + related to the anti-theft-on command.
When the ID code is input, the ID code is registered in the programmable ROM, and when the command code + ID code related to the anti-theft-on command is input, the programmable RO
It is also possible to perform verification and deletion with the ID code of M.

Furthermore, when the ID code of the anti-theft-off command does not match the ID code registered in the programmable ROM, the security controller of the car security device itself waits for a certain period of time, but the car audio device The system controller may wait for a certain period of time and not accept new ID code input during this period.

Further, in the above embodiment, only one car entertainment device is connected to the car security device body, but it is possible to connect multiple car entertainment devices such as a car TV device in addition to a car audio device. In this case, it is possible to provide multiple output terminals for the anti-theft-on command and anti-theft-off command of the car security device itself, or connect one output terminal to each device in parallel in the middle of the output line. It would be better if there were multiple input terminals for the coincidence signal, or if there was a time difference between when each device inputs the anti-theft-off command and when it outputs the coincidence signal, it would be possible to know which device outputs the coincidence signal. Therefore, the input line from each device must be shared in the middle.
It is sufficient to use two input terminals.

Furthermore, the present invention is not limited to a car security device, but can of course be applied to a combination of a home security device and one or more home entertainment devices such as a home audio device or a TV device.

[0043]

According to one aspect of the present invention, when an arm operation or a disarm operation is performed using a hand-held controller, the security device main body enters the alarm state or the alarm disarm state, and the security control means changes to a predetermined ID. When an anti-theft-on command or an anti-theft-off command including a code is output to an entertainment device, and the entertainment device inputs the anti-theft-on command, the ID code included in the anti-theft-on command is programmable.
When registering in OM and prohibiting operation, and inputting an anti-theft-off command, the ID code included in the anti-theft-off command is converted to the ID registered in the programmable ROM.
The configuration is configured so that the registered ID code in the programmable ROM is erased and the operation prohibition is canceled when the ID code matches the code, so once the ID code is registered in the programmable ROM, the ID code will disappear even if the backup power is cut off. Since it is possible to reliably prevent the entertainment device from operating normally until the same ID code is entered afterwards, a battery-powered backup power circuit is not required in addition to the power cutoff sensor circuit, which saves space on the entertainment device. . Furthermore, it is difficult to erase the ID code of a programmable ROM without a handheld controller for arm/disarm operations and the security device itself, and since the handheld controller is carried around by the user, it is difficult for thieves to operate the entertainment device normally. It can be made possible. Further, arm/disarm operations for the security device body and anti-theft on/off operations for the entertainment device do not have to be performed separately, which saves time and effort.

According to another aspect of the present invention, the security control means is configured to output an anti-theft-on command and an anti-theft-off command including an ID code set in advance by the operating means. 1. Programmable RO even if the thief obtains the hand control device and the security device itself
It is not easy to find the ID code registered in M, making it difficult to use the entertainment device.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of main parts of a remote-controlled car security device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the system controller of the car audio device in FIG. 1;

FIG. 3 is a flowchart showing the operation of the security controller of the car security device in FIG. 1;

[Explanation of symbols]

1　Hand control device 6　Security device body 7 Receiving section 8 Operation section 10 Security controller 11 Car audio equipment 13 Programmable ROM 22 System controller 22a Control section 22b ID code registration/deletion section 22c Control prohibition part

Claims (2)

[Claims] Claim 1: A hand control device that performs arm/disarm operation, an abnormality detection means that detects the occurrence of an abnormality, an alarm means that issues an alarm, and security that performs abnormality monitoring and alarm control according to the operation of the hand control device. The security device main body includes a receiving means for receiving a transmission signal from a hand-held controller, and a device that enters a warning state when the receiving means receives an arm operation command, monitors an abnormality, and performs predetermined alarm control when an abnormality occurs. In a security device that includes a security control means that disarms the alarm when a disarm operation command is received, the security device main body is connected to one or more entertainment devices, and the security control means of the security device main body is configured to disarm the arm operation command. outputting an anti-theft-on command including a predetermined ID code to each entertainment device when the disarm operation command is received, outputting an anti-theft-off command including a predetermined ID code to each entertainment device when the disarm operation command is received; Each entertainment device has a programmable ROM and, when an anti-theft command is input, the ID code included in the anti-theft command is stored in a programmable ROM.
ID code registration that registers in OM and inputs an anti-theft-off command, checks the ID code included in the anti-theft-off command with the ID code registered in the programmable ROM, and erases the registered ID code in the programmable ROM when they match. A security device comprising: erasing means; and inhibiting means for prohibiting the operation of an entertainment device when an ID code is registered in a programmable ROM. 2. The security device main body is provided with an operation means for setting an ID code, and the security control means outputs an anti-theft-on command and an anti-theft-off command including the set ID code. The security device according to claim 1.