JPH05144161A - Audio player - Google Patents

Abstract

PURPOSE:To make it impossible to take out an inserted CD without destroying a player at the time of security mode by providing an ejection inhibit means capable of inserting the CD, and on the other hand, inhibiting the ejection of the CD. CONSTITUTION:An audio player with is provided with a microcomputer, an operating means, a memory for security, etc., is provided with the ejection inhibiting means capable of inserting the CD, and on the other hand, inhibiting the ejection of the CD. By this security function, when a CD is inserted in a stolen CD player, the CD player does not operate, and also, a CD already loaded in the CD player when it was stolen can not be played. In addition, since the security function has the ejection inhibiting means, the CD already loaded with it was stolen can not be taken out. Destroying the CD player is an only means to take out the CD.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio player, and more particularly, to a vehicle audio player having a security function.

[0002]

2. Description of the Related Art The present car audio player has a security measure as a means for preventing theft, even if someone steals an audio player equipped with a CD player from another vehicle and mounts it on his vehicle to operate it. Measures are taken so that the function works and the audio player does not operate. Specifically, if the security function is activated, a CD or the like can be ejected, but a means for prohibiting the insertion is taken. That is, in the conventional security function, theft is prevented by disabling a stolen CD player or the like.

[0003]

[Problems to be Solved by the Invention] Certainly, the stolen C
If the D player or the like is disabled, a certain antitheft effect can be obtained. However, under the security function, the thief will not suffer any physical loss by stealing. Therefore, in order to further enhance the theft prevention effect, it is necessary to take measures to give the thief some physical damage in addition to the above-mentioned preventive measures. The present invention has been made in view of the above problems, and an object of the present invention is to provide an audio player having a security function, which is provided with a unit capable of causing some damage to a thief in addition to the conventional antitheft unit. ..

[0004]

In order to achieve the above object, an audio player according to the present invention is an audio player provided with a microcomputer, an operating section, a memory for security and the like, and a CD in a security mode. It is characterized in that it is provided with a discharge prohibiting means for prohibiting the discharge of the CD or the like while allowing the insertion of the CD or the like.

[0005]

According to the above construction, in the audio player equipped with the microcomputer, the operation section, the security memory and the like, the CD or the like can be inserted in the security mode, while the ejection of the CD is prohibited. Since the ejecting prohibition means is provided, the security function prevents the CD player from operating even if the CD is inserted into the stolen CD player, and plays the CD contained in the CD player at the time of the theft. I can't let you do it either. In addition, since the security function is provided with the ejection prohibition means, the CD inserted in the CD player or the CD contained at the time of the theft cannot be taken out. If you really want to take it out,
There is no choice but to destroy the CD player.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an audio player according to the present invention will be described below with reference to the drawings. FIG. 1 is a flowchart showing the security function of the audio player according to this embodiment. The security function of the present embodiment mainly operates when the backup power supplied to the CD player or the like is turned off once and then supplied again. Since the security function of this embodiment uses the ID code system, it is premised that the ID code is stored in the memory. Therefore, if the ID code is not stored in the memory, as in the case of purchasing a CD player or the like (automobile) for the first time, the security of the present embodiment does not work.

When the backup power supply is cut off and then supplied again, the microcomputer operates as a backup R.
The flag FP provided in the AM is set to 1 and the security mode is entered (step 1). When the security mode is entered, it is first determined whether or not the ID code is stored in the EEPROM (step 2). If the ID code is stored, the process proceeds to step 3. If not stored, the process jumps to step 9, the security mode is released, and the normal operation shown in steps 11 to 15 is performed. In order to prevent the security mode from being interrupted when the power supply (ACC) is turned off and then turned on again, when the power supply is turned on, it is determined whether or not the security mode is set. If the security mode (FP = 1) in step 10), the process proceeds to step 3, and if the mode is not satisfied and FP = 0, the process proceeds to step 11.

The processing from step 3 to step 8 is a part showing the feature of this embodiment. In step 3, it is determined whether a disc or the like is inserted. If it is inserted, the process proceeds to step 6, and if it is not inserted, the process proceeds to step 4. In step 4, it is judged whether or not the disc is inserted. If it is not inserted, the process proceeds to step 6, and if it is inserted, the process proceeds to step 5. In step 5, loading processing of the disc inserted in step 4 is performed. That is, the processing from step 3 to step 5 indicates that the loading processing is executed if the disc is inserted into the CD player with the disc not inserted therein. Then, in step 6, the state of the operation key is fetched. At that time, if the same code as the ID code confirmed in step 2 is entered, the security mode is released in step 9, but if a code different from the above code is entered or no code is entered, Proceeds to step 8. Step 8 shows the eject operation, but the eject operation as a process is not performed. Substantially no processing is performed, and the process returns to step 3 and the above-mentioned processing steps are repeated again. This means that unless the same code as the ID code stored in the EEPROM is input in step 7, the security mode is not released and the disc already inserted in the CD player or the disc newly inserted in the player is not deleted. This indicates that the disc will not be ejected when the eject button is pressed (by a thief) to eject.

As described above, the security mode is released in step 9, and then the process proceeds to step 11 to perform normal processing. First, the input information of the operation keys is taken in (step 11), and then it is judged whether or not the disc is in the CD player (step 1).
2), otherwise, other processing (step 15)
Move on to step 13, and if yes, go to step 13. Step 1
In 3, it is judged whether or not the eject button has been pressed, and if it has been pressed, the process proceeds to step 14 and the disc is ejected. That is, step 12 to step 14
The process (1) indicates that the disc is ejected when the eject button is pressed while the disc is inserted in the CD player. If the eject button is not pressed in step 14, the disc reproducing process or the like is executed in step 15 and the process returns to step 11. The disk power supply and the ejection process are performed by the backup power supply.

As described above, in contrast to the conventional security function, the security function of this embodiment operates so as to accept the insertion of a CD and not eject it. It is not possible to eject a CD from a CD player. If you want to take out the CD, there is no other way than to destroy the player, so it is possible to make the thief more aware of the meaninglessness of stealing through the physical damage caused by the destruction. ..

In the above embodiment, the CD player is taken as an example of the audio player for explanation, but no CD is used.
The present invention is not limited to a player, but the present invention can be similarly applied to a cassette tape player.

[0012]

As described above in detail, in the audio player according to the present invention, in the audio player provided with the microcomputer, the operation section, the security memory and the like, C is set in the security mode.
Since a discharge prohibiting means for prohibiting the discharge of the CD or the like while allowing the insertion of the D or the like is provided, the CD or the like inserted or inserted in the security mode can be taken out unless the audio player is destroyed. Absent.
Therefore, the thief cannot insert a CD or the like into the stolen audio player to play, and if the CD or the like belongs to the thief himself, unless the audio player is destroyed as described above. The C
Since D cannot be ejected, the thief himself suffers a physical loss. Therefore, the meaninglessness of stealing by a thief can be made more serious than the conventional example through the physical loss.

[Brief description of drawings]

FIG. 1 is a flowchart showing a security function of an audio player according to the present invention.

Claims (1)

[Claims] 1. An audio player equipped with a microcomputer, an operation unit, a security memory, etc., has a discharge prohibiting means for prohibiting the discharge of the CD or the like while allowing the CD or the like to be inserted in the security mode. An audio player characterized by being provided.