JP2002029320A - On-vehicle acoustic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with expensive hardware. SOLUTION: In this on-vehicle acoustic apparatus 10 having the theft preventive function for invalidating an operation command, the acoustic apparatus is provided with a memory card 17 detachably installed in a card slot 23B of the on-vehicle acoustic apparatus and rewritably storing certification data, a memory card control part 18 for reading out the certification data stored in the memory card, a flash ROM 22 for storing the certification data and a CPU 24 for releasing the theft preventive function when judged as the same by judging whether or not the certification data on the memory card is the same as the certification data stored in the flash ROM according to starting of the on-vehicle acoustic apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle audio device having an anti-theft function.

[0002]

2. Description of the Related Art Conventionally, according to an in-vehicle acoustic device having such a theft prevention function, a manufacturer sets a personal identification code corresponding to a product number on a one-to-one basis and is unique to the device. When a password unique to the device is input and these passwords match, operation becomes possible.

[0003] In addition, the user sets an arbitrary personal identification code in advance and inputs the personal identification code when the user gets on the vehicle. When the personal identification codes match, the user can operate the personal identification code.

However, according to such an on-vehicle acoustic device, when a manufacturer sets a device-specific password corresponding to a product number on a one-to-one basis, the manufacturer must manage the password. And put a heavy burden on the manufacturer.

[0005] Further, even when the user sets a personal identification code, if the user forgets the personal identification code, the user cannot use the device and the user is not very convenient.

[0006] Therefore, as an on-vehicle audio device having an anti-theft function that does not use a personal identification code, there is a DC having an operation panel detachably attached to the on-vehicle device main body.
P (Detouchable Control Pan)
e) Some have functions.

[0007] According to the on-vehicle audio equipment having the DCP function, when the user leaves the vehicle, the user removes the operation panel attached to the on-vehicle equipment body and carries only this operation panel. Even if the in-vehicle device body is stolen, the in-vehicle device body cannot be operated without the operation panel, so that the thief is less motivated to steal.

However, according to such a vehicle-mounted acoustic device having the DCP function, when the operation panel is detached from the vehicle-mounted device body and only this operation panel is lost, only the operation panel is newly replaced. If you can buy only the operation panel like this,
Since the possibility of theft of the operation panel increases, complicated procedures such as presentation of an ID card and confirmation of customer registration are required.

Therefore, since such complicated procedures are troublesome, in-vehicle audio equipment having an anti-theft function using a voice print or a fingerprint which can authenticate an individual is widely known recently.

According to the on-vehicle acoustic device having the anti-theft function, a detection device for detecting a voiceprint, a fingerprint, and the like,
An identification device for identifying an individual based on a voiceprint, a fingerprint, or the like detected by the detection device is provided. With the detection device and the identification device, an individual can be identified with high probability.

[0011]

However, according to such a conventional on-vehicle acoustic device, although an individual can be identified with a high probability, expensive hardware such as a detecting device and an identifying device is required. In addition, for example, when the tone of the user's voice is poor or the finger is injured, there is a problem that the individual cannot be authenticated accurately.

The present invention has been made in view of the above problems, and has as its object to provide a low-cost, on-vehicle acoustic device having an anti-theft function capable of easily and securely authenticating an individual. Is to provide.

[0013]

According to one aspect of the present invention, there is provided an on-vehicle audio device having an anti-theft function for invalidating an operation command. A recording medium which is detachably attached to and stores the authentication data in a rewritable manner, authentication data reading means for reading the authentication data stored in the recording medium, storage means for temporarily storing the authentication data, Authentication data determining means for determining whether or not the authentication data of the recording medium read by the authentication data reading means is the same as the authentication data stored in the storage means in response to activation of the vehicle-mounted audio device. And a control unit for canceling the anti-theft function when the authentication data is determined to be the same by the authentication data determination unit.

Therefore, according to the vehicle-mounted acoustic device of the present invention, it is determined that the authentication data stored in the recording medium and the authentication data temporarily stored in the storage unit are the same in response to the activation of the vehicle-mounted audio device. In such a case, the anti-theft function is canceled, so that the user can simply attach the recording medium, and provide a low-cost, anti-theft function that can easily and reliably authenticate an individual. be able to. Further, since the recording medium is small, it is excellent in portability.

In the vehicle-mounted acoustic device according to the present invention, when the control means has no authentication data temporarily stored in the storage means, the control means stores the authentication data of the recording medium read by the authentication data reading means in the storage means. Temporary storage in the means.

Therefore, according to the on-vehicle acoustic device of the present invention, when the authentication data is not temporarily stored in the storage means, the authentication data of the recording medium read by the authentication data reading means is temporarily stored in the storage means. Thus, the authentication data can be stored in the storage means by a simple procedure.

In the vehicle-mounted audio device according to the present invention, the authentication data includes a file name, a file size indicating the file capacity, and an update date and time.

Therefore, according to the on-vehicle audio device of the present invention, by using the file name, the file size and the update date and time as the authentication key, it is possible to prevent the authentication key from being copied by a third party.

In the vehicle-mounted acoustic device according to the present invention, the authentication data is constituted by a file name and voice data of a real voice of a user.

Therefore, according to the on-vehicle acoustic device of the present invention, by using the voice data of the file name and the real voice as the authentication key, it is possible to reliably prevent the authentication key from being copied by a third party.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an on-vehicle acoustic device according to an embodiment of the present invention. Figure 1
FIG. 1 is a block diagram showing a schematic configuration inside a vehicle-mounted acoustic device shown in the present embodiment.

An on-vehicle acoustic device 10 shown in FIG. 1 includes a receiving antenna 11 for receiving an incoming radio signal, and a tuner section 12 for tuning the received radio signal.
And an amplifier unit 13 for amplifying the tuned radio signal as an audio signal, a speaker unit 14 for outputting the amplified audio signal as audio, and a music C for reproducing a music CD.
A D reproduction unit 15, a D / A converter 16 that converts the reproduced digital audio signal into an analog signal to be supplied to the amplifier unit 13 as an audio signal, and a memory card 1 described later.
7, a memory card control unit 18 for controlling the memory of the memory card 17, a voice decompression circuit 19 for decompressing voice compressed data from the memory card 17, a ROM 20 for storing various programs, and various data. It has a RAM 21 for temporarily storing, a non-volatile flash ROM 22 for storing authentication data to be described later, an operation panel 23 having operation buttons and the like, and a CPU 24 for controlling the entire on-vehicle audio device 10.

The operation panel 23 has a C for inserting a music CD.
D insertion slot 23A, a card slot 23B into which the memory card 17 is removably inserted, and a display unit 23C for displaying various information such as a display of a reception frequency and a reproduction time.
And operation buttons 23D for inputting various commands.

The flash ROM 22 stores authentication data such as personal information and device-specific information, which will be described later, and may store a program instead of the ROM 20 depending on the system.

The memory card 17 uses a personal computer to store data in which the amount of information has been reduced to several tenths to tenths. Note that this memory card 1
7 can record not only music created by various artists, but also voice memos for meetings and the like, and vehicle driving record information.

The memory card 17 is a stamp-size memory card such as a compact flash (registered trademark), a smart media, a multimedia card, or the like.

The recording medium described in the claims is a memory card 17, and the authentication data reading means is a memory card control unit 18,
The storage means corresponds to the flash ROM 22, and the authentication data determination means and the control means correspond to the CPU 24.

Next, the on-vehicle acoustic device 1 shown in the present embodiment.
The operation of 0 will be described. FIG. 2 shows a CPU 24 involved in the anti-theft processing of the on-vehicle audio device 10 according to the present embodiment.
5 is a flowchart showing the processing operation of the first embodiment.

The memory card 17 used in the anti-theft processing shown in FIG. 2 records an audio file or a music file generated by a user using a personal computer.
Use file size and update date and time information as user authentication data.

When the power supply of the vehicle-mounted audio device 10 is turned on (step S11), the CPU 24 determines whether or not the memory card 17 is inserted in the card slot 23B (step S12).

The memory card 17 is inserted into the card slot 23B.
If is attached, it is determined whether or not the authentication data is recorded in the flash ROM 22 (step S13).

If the authentication data is not recorded in the flash ROM 22, the authentication data recorded in the memory card 17 is read from the memory card control unit 18, and the read authentication data is recorded in the flash ROM 22 (step S14). By releasing the prevention function, the operation permission process of the operation panel 23 is executed (step S1).
5), this processing operation ends.

In step S13, the flash RO
If authentication data is recorded in M22, flash R
It is determined whether or not the file name of the authentication data identical to the file name of the authentication data recorded in the OM 22 exists in the memory card 17 (step S16).

If the same file name exists in the memory card 17, the file size and the update date and time related to the authentication data in the flash ROM 22 are compared with the file size and the update date and time related to the authentication data in the memory card 17. (Step S1)
7) Based on the comparison result, it is determined whether the file size and the update date are the same (step S18).

If the file size and the update date and time are the same, the process proceeds to step S15.

If the file size and the update date and time are not the same, the ongoing anti-theft function is continued, and a message "cannot be operated" is displayed on the display section 23C of the operation panel 23 (step S19). ), The operation invalidation processing of the operation panel 23 is continued (step S2).
0), this processing operation ends.

In step S16, the flash RO
If the file name of the authentication data recorded in M22 and the file name of the authentication data recorded in the memory card 17 are not the same, step S1 is performed to continue the anti-theft function.
Move to 9.

According to the present embodiment, the memory card 17
Is inserted into the card slot 23B to determine whether or not the file name of the authentication data recorded on the memory card 17 and the file name of the authentication data recorded on the flash ROM 22 are the same. In this case, the file size and the update date and time related to the authentication data recorded on the memory card 17 are stored in the flash ROM 22.
The anti-theft function is released only when the file size and update date related to the authentication data recorded in are the same, and when any of these file names, file size, or update date and time do not match, the anti-theft function To continue.

In other words, according to the present embodiment, the user only needs to insert the memory card 17 and is provided with a low-cost, anti-theft function capable of easily and securely authenticating an individual. Can be. further,
Since the memory card 17 is small, it is excellent in portability.

In the above embodiment, the file name, the file size, and the update date and time of the audio file are recorded on the memory card 17 as the authentication data. However, the present invention is not limited to such an audio file. Needless to say, the same effect can be obtained with a text file.

Also, as an example of the authentication data, an audio file such as a music file has been described as an authentication key, but an audio file based on the real voice of the user is recorded as an authentication key to prevent theft. As a function, further effects can be obtained.

Next, the operation of the on-vehicle acoustic device 10 according to another embodiment when such authentication data is used will be described. FIG. 3 is a flowchart showing a processing operation of the CPU 24 related to the antitheft processing of the on-vehicle audio device 10 according to another embodiment. The difference from the on-vehicle audio device 10 shown in FIG.
7 and the data content of the authentication data recorded in the flash ROM 22.

The memory card 17 used in the anti-theft processing shown in FIG. 3 utters its own name as voice data for identifying an individual to further clarify the identifiability of the authentication data. By using this, the personal name (sound data) and the file name are converted from analog signals to digital signals to make sound compression data,
This audio compression data is recorded as authentication data.

The CPU 24 shown in FIG. 3 turns on the power of the on-vehicle audio device 10 (step S31), and determines whether or not the memory card 17 is inserted in the card slot 23B (step S32).

The memory card 17 is inserted into the card slot 23B.
If is installed, it is determined whether or not the authentication data is recorded in the flash ROM 22 (step S33). If it is not recorded in the flash ROM 22, the authentication data, file name and audio data recorded in the memory card 17 are stored in the flash ROM 2.
2 (step S34), an operation permission process is executed to release the anti-theft function of the operation panel 23 (step S35), and this processing operation ends.

In step S33, the flash RO
If authentication data is recorded in M22, flash R
It is determined whether or not the file name of the authentication data identical to the file name of the authentication data recorded in the OM 22 exists in the memory card 17 (step S36).

If the same file name exists in the memory card 17, a comparison process is performed to compare the voice data related to the authentication data in the flash ROM 22 with the voice data related to the authentication data in the memory card 17. (Step S37) Based on the comparison result, it is determined whether or not these audio data are the same (Step S37).
38). If these voice data are the same, step S
Move to 35.

If these voice data are not the same, the anti-theft function of the operation panel 23 is continued so that
A message "Operation not possible" is displayed on the display section 23C of the operation panel 23 (step S39), the operation invalidation processing of the operation panel 23 is continued (step S40), and this processing operation is ended.

In step S36, the flash RO
If the file name of the authentication data recorded in M22 and the file name of the authentication data recorded in the memory card 17 are not the same, step S3 is performed in order to continue the anti-theft function.
Move to 9.

According to the anti-theft processing shown in FIG. 3, the same effect as that of the anti-theft processing shown in FIG. 2 can be obtained. Of course, real voice data is used as the authentication data. Even for the same words, since the utterance speed and inflections vary from person to person, and also depending on the noise conditions of the recording environment, it is very difficult to duplicate the same voice data, and it is very effective as authentication data. .

In these embodiments, the authentication data is recorded on the memory card 17 through a personal computer. However, if this authentication data is backed up on a hard disk or a floppy (registered trademark) disk, it is assumed that the authentication data is temporarily backed up. Even if the memory card 17 is lost or damaged, the authentication data of the same content can be copied to a new memory card by a simple operation.

In the above embodiment, the ROM
20 and a flash ROM 22, and a flash RO
The authentication data is recorded in M22,
There is also a system having a flash ROM 22 for recording the program content of the ROM 20 instead of providing 0.
In such a system, this flash ROM
The authentication data may be stored in one area of the memory 22. In this case, the present embodiment can be realized only by changing software (program) without changing hardware.

[0053]

According to the vehicle-mounted acoustic device of the present invention configured as described above, the authentication data stored in the recording medium and the authentication data temporarily stored in the storage means are activated in response to the activation of the vehicle-mounted audio device. Since the anti-theft function is released only when it is determined that the data is the same, the user can simply attach the recording medium, and authenticate the individual easily and reliably at low cost. Can be provided. Further, since the recording medium is small, it is excellent in portability.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration inside a vehicle-mounted acoustic device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing operation of a CPU relating to a theft prevention process of the vehicle-mounted audio device according to the present embodiment.

FIG. 3 is a flowchart showing a processing operation of a CPU relating to anti-theft processing of an in-vehicle audio device according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 In-vehicle audio equipment 17 Memory card (recording medium) 18 Memory card control part (authentication data reading means) 22 Flash ROM (storage means) 24 CPU (authentication data judgment means, control means)

Claims (4)

[Claims] 1. An on-vehicle audio device having an anti-theft function for invalidating an operation command, comprising: a recording medium detachably mounted on the on-vehicle audio device and storing authentication data in a rewritable manner; An authentication data readout unit that reads out the authentication data stored in the recording medium; a storage unit that temporarily stores the authentication data; and an authentication data readout unit that reads out the authentication data in response to activation of the vehicle-mounted acoustic device. Authentication data determining means for determining whether or not the authentication data of the recorded recording medium is the same as the authentication data stored in the storage means; and when the authentication data determining means determines that the authentication data is the same, And a control means for canceling the anti-theft function. 2. The control unit, when there is no authentication data temporarily stored in the storage unit,
2. The on-vehicle acoustic device according to claim 1, wherein the authentication data of the recording medium read by the authentication data reading means is temporarily stored in the storage means. 3. The on-vehicle audio device according to claim 1, wherein the authentication data includes a file name, a file size indicating the file capacity, and an update date and time. 4. The on-vehicle acoustic device according to claim 1, wherein the authentication data is composed of a file name and voice data of a real voice of a user.