JPH06247217A - Electronic apparatus with removable panel - Google Patents

Abstract

PURPOSE:To generate sure resetting of an electronic circuit when a removable panel part is to be mounted by furnishing a reset signal producing means in a system microcomputer provided in the body part. CONSTITUTION:A system microcomputer 2 provided in the body part 1 is fed with a sensing signal from a panel mounting/removal sensing part 3 due to a panel mounting and removing mechanism 4, and changeover control of a power switch part 6 is performed and the power is supplied to a mounting/ removal panel part 10, and thereto a reset signal is sent by a reset signal producing means from the system microcomputer 2, and thereby the operation set conditions of a microcomputer 11, remote controlled reception part 12, and display part 13 in the panel part 10 are reset.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel detachable electronic device, and more particularly to a detachable panel suitable for preventing malfunctions by resetting an operating state of an electronic circuit of the detachable panel portion when the detachable panel portion is attached. With electronic devices.

[0002]

2. Description of the Related Art Conventionally, an electronic device with a detachable panel is shown in FIG.
Many of the block diagrams of the main part shown in were provided.
In FIG. 3, reference numeral 1 is a main body of the electronic device, 2 is a system microcomputer built in the main body 1, and the system microcomputer 2 controls the functions of the respective parts of the main body 1.

Reference numeral 3 denotes a panel attachment / detachment detection section. The panel attachment / detachment detection section 3 detects the attachment / detachment state of the attachment / detachment panel section by the panel attachment / detachment mechanism 4 and sends this detection signal to the system microcomputer 2. Reference numeral 5 denotes a power supply unit. Power supplied from the power supply unit 5 is supplied to the removable panel unit through a power line 22 via a power switch unit 6 for controlling power ON / OFF to the removable panel unit.

Reference numeral 10 denotes a detachable panel section, and a built-in microcomputer 11 is attached to the detachable panel section 10.
Generally, the detachable panel section 10 has a remote control (hereinafter simply referred to as remote control) receiving section having operation keys.
It is equipped with 12 and display unit 13.

The remote controller receiving unit 12 receives operation data from a remote controller (not shown) in a separate housing, sends the operation data to the microcomputer 11, and if necessary, the system microcomputer 2 of the main unit 1. The microcomputer 11 receives the display data sent from the system microcomputer 2 and displays it on the display unit 13 composed of, for example, an LCD.

The system microcomputer 2 of the main body 1 and the microcomputer 11 are connected by a communication line 20, and the power supply of the remote controller receiver 12 and the display 13 is from the main body 1 to the power line.
Supplied via 22. Reference numeral 30 denotes a panel power supply voltage detector, and this panel power supply voltage detector 30 detects the power supply voltage supplied from the main body 1.

As an anti-theft measure, the electronic device thus constructed, such as an on-vehicle electronic device, is detached from the electronic device main body 1 by detaching the removable panel part 10 from the electronic device main body 1 when the vehicle is parked for a relatively long time. By taking it home and making the electronic devices inside the vehicle unusable, the electronic devices were prevented from being stolen.

As described above, in a vehicle-mounted electronic device or the like, the detachable panel portion 10 can be easily attached and detached by the panel attaching / detaching mechanism 4 as an antitheft measure. It was detected by the panel attachment / detachment detector 3.

When the panel attachment / detachment detection section 3 detects the detachment of the attachment / detachment panel section 10, the system microcomputer 2 controls the power switch section 6 to turn off the power, and the attachment / detachment panel section 10 is turned off.
Cut off the power supply to.

In this way, by cutting off the power supply to the removable panel section 10 on the main body 1 side, the panel power supply voltage detection section 30 detects the voltage drop of the supplied power supply voltage on the removable panel section 10 side. Then, when the voltage drop becomes a predetermined value,
The panel power supply voltage detection unit 30 sends a reset signal to the microcomputer 11.
The microcomputer 11 is initialized by sending 31 and resets the operating states of the remote control receiver 12 and the display unit 13 that have been operating until now.

The power source voltage of the detachable panel section 10 is gradually lowered by the capacitor C provided inside while the capacitor C is discharged, and finally the remote control receiving section 12 and the display section 13 of the detachable panel section 10 are discharged. It had stopped working.

On the contrary, when the detachable panel section 10 is attached to the main body section 1 by the panel attach / detach mechanism 4, the panel attach / detach detection section 3 detects attachment of the attach / detach panel section 10, and the system microcomputer 2 turns on the power switch section 6. Power ON control, removable panel section 10
Power to the remote control receiver 12 of the detachable panel 10.
The display unit 13 was set to the operating state.

In this way, the attachment / detachment of the attachment / detachment panel section 10 automatically controls ON / OFF switching of the power supply from the main body section 1,
When the power switch unit 6 is turned off, the electronic circuit is reset by the detection of the panel power supply voltage detection unit 30, and the detachable panel unit 10 can be arbitrarily removed from the main body unit 1 to prevent theft of electronic equipment. As a measure, the above detachable panel section
I was able to bring back 10.

[0014]

However, in the above-described conventional electronic device with a detachable panel unit, the detachable panel unit 10 is detached for a short time due to some reason, or the detachable panel unit 10 is impacted or the like. If 10 accidentally leaves,
When the panel attachment / detachment detection unit 3 detects this erroneous detachment state, the system microcomputer 2 sets the power switch unit 6 to the power OFF state and stops the data communication operation with the attachment / detachment panel unit 10.

On the other hand, even if the detachable panel section 10 loses the power supply from the main body section 1, the voltage drop detected by the panel section power supply voltage detection section 30 is detected by the charging action of the capacitor C provided therein. Of course, since the reset signal 31 is not sent from the panel power supply voltage detection unit 30 to the microcomputer 11, naturally, the operation up to now is continued without initializing the microcomputer 11 of the removable panel unit 10, and the system microcomputer of the main body unit 1 is continued. There is a problem that the operation of the electronic device is confused because normal data communication with 2 is impossible.

Further, the microcomputer 11 of the removable panel section 10 is detached from the main body section 1 without the reset signal 31 from the panel power supply voltage detection section 30 being sent out, and the removable panel section 10 is again provided. If the device is installed in the main body unit 1, the setting operation of the main body unit 1 becomes unstable due to the setting state of the detachable panel unit 10 set previously, and the user must cancel the setting contents. There was a flaw.

When the operation of the main body unit 1 is started by the remote control receiving unit 12 of the removable panel unit 10 or the like, for example, the operation of the main body unit 1 is started by receiving the identification code from the removable panel unit 10. In this case, the removable panel section 10
If the operation of the microcomputer 11 of the attachment / detachment panel section 10 is unilaterally deactivated due to the mistaken detachment of the device, the system microcomputer 2 of the main body section 1 waits for the above-mentioned identification code, and the attachment / detachment panel section 10 is installed again. There is also a drawback that the main body 1 does not enter the operating state unless it receives the identification code even if it is redone.

The present invention has been made in view of the above points, and the purpose thereof is to solve the drawbacks of the conventional example, and to remove the system microcomputer 2 of the main body 1 from the removable panel section 10.
By providing a reset signal generating means to the microcomputer 11, there is provided an electronic device with a detachable panel that always resets the electronic circuit of the detachable panel unit 10 even if the detachment is mistaken.

[0019]

An electronic device with a detachable panel according to the present invention includes a detachable panel portion in which a panel of the electronic device is detachable from a main body portion, and the main body portion and the detachable panel portion both include a control microcomputer. Then, in the electronic device with a detachable panel in which the control microcomputer is connected by a communication line, reset signal generating means is provided in the electronic device main body part, and the reset signal is sent to the detachable panel part when the detachable panel part is attached or detached. It is configured as follows.

Further, a panel attachment / detachment detecting portion for detecting attachment / detachment of the attachment / detachment panel portion and a power switch portion for supplying power to an electronic circuit provided on the attachment / detachment panel portion are provided in the electronic equipment main body portion to detect the panel attachment / detachment. The power switch unit may be turned on when the panel mounting of the unit is detected, and the reset signal may be sent to the detachable panel unit to reset the operating state of the electronic circuit of the detachable panel unit.

Further, a storage means may be provided for storing the operating state of the electronic circuit before the detachment panel section is detached when the panel detachment detection section detects the detachment of the detachment panel section.

The main power switch of the electronic equipment
A storage means may be provided to store the operating state of the electronic circuit of the detachable panel section before the power is turned off when the power is turned off.

The electronic circuit of the detachable panel section may be composed of a remote control receiving section having operation keys, a display section for displaying an operating state, and the like.

[0024]

According to the present invention, the detachable panel portion can be arbitrarily attached to and detached from the electronic equipment main body portion by the panel attaching / detaching mechanism, and the detachable state of the detachable panel portion is detected by the panel attach / detach detecting portion. When the panel attachment / detachment detection section detects the detachment of the attachment / detachment panel section, this detection signal is sent to the system microcomputer, and the system microcomputer stores the state before the detachment of the attachment / detachment panel section in the memory provided inside the body section. Control the power switch provided in the power switch to OFF.

This power switch unit is a power supply line that is supplied from the internal power supply unit to the detachable panel unit, and can control ON / OFF switching of the power supply. That is, when the power switch section is turned off, the power supply from the main body section is cut off and the electronic circuit provided in the detachable panel section becomes inoperable.

The electronic circuit of the detachable panel section is composed of, for example, a remote control receiving section and a display section mounted on the panel surface, and a microcomputer for controlling the remote control receiving section and the display section.

As described above, the detachable panel section detached from the main body is turned off, and the detachable detachable panel section can be separated from the main body section and moved to another place.
That is, in particular, in the case of a vehicle-mounted electronic device, only the detachable panel part can be detached from the main body part as described above to prevent the electronic device from being stolen when the vehicle is parked, and can be brought home.

On the other hand, when the detachable panel section detached from the main body section is reattached and the main power source of the main body section is turned on, the panel attachment / detachment detection section detects the attachment / detachment panel section and the system microcomputer turns on the power switch section. ON control.

That is, the detachable panel portion mounted on the main body is supplied with power from the power switch portion, and the electronic circuit of the detachable panel portion is put into operation. At the start of this operation, the operation state of the electronic circuit of the removable panel section can be reset by the reset signal generating means provided in the system microcomputer of the main body section, and the microcomputer of the removable panel section can be initialized.

As described above, when the detachable panel unit is attached, the microcomputer of the detachable panel unit is reset and initialized, so that the operation of the electronic device can be arbitrarily set as the user desires without considering the previous setting contents. can do.

Further, when the panel attachment / detachment detecting section detects the detachment of the detachable panel section, by providing a storage means for storing the operation state before the detachment of the detachable panel section in the memory inside the system microcomputer of the main body section, When the removable panel section is mounted on the main body section again, the stored operational state can be sent from the system microcomputer to the microcomputer of the removable panel section to easily bring the previously set operational state.

Similarly, when the main power switch of the electronic device is turned off, a storage means for storing the operating state of the detachable panel section before the power is turned off in the memory inside the system microcomputer of the main body is provided. , When the main power is turned on, the stored information can be read from the memory and easily set to the original operating state.

As described above, when the detachable panel unit is mounted, the operation state of the detachable panel unit can be reset and the operation can be started.
Alternatively, the operating state before the main power-off operation can be read out from the memory and easily reproduced, and the electronic device having the detachable panel function can be easily handled and reliably and stably set.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an electronic device with a detachable panel according to the present invention will be described with reference to FIGS. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a block diagram of a main part, and FIG. 2 is a flowchart explaining the operation.

In the figure, the main body 1 has the same structure as the conventional example, but a reset line 21 for sending a reset signal from the system microcomputer 2 to the microcomputer 11 of the removable panel unit 10.
Power is supplied to the microcomputer 11 of the electronic circuit of the detachable panel section 10, the remote controller receiving section 12 with operation keys, and the display section 13 directly from the power line 22 as shown in the figure.

In the electronic device with the detachable panel thus constructed, the detachable panel unit 10 can be arbitrarily detached from the main body 1 by the panel detaching mechanism 4.
The panel attachment / detachment detecting section 3 detects the attachment / detachment state of the above, and sends the above detection signal to the system microcomputer 2. The system microcomputer 2 and the microcomputer 11 of the detachable panel section 10 are connected by a communication line 20, and various data communication can be performed.

The above-described panel attaching / detaching mechanism 4 of the electronic device with the attaching / detaching panel can attach / detach the attaching / detaching panel portion 10 by a mechanical structure (not shown), and the attaching / detaching panel portion 10 is firmly attached to the main body portion 1 by a mechanical lock mechanism. Can be installed. The communication line 20, the reset line 21, and the power supply line 22 are generally connected by connector connection.

The system microcomputer 2 built in the main body 1
As is well known, the microcomputer 11 with the built-in detachable panel section 10 is basically composed of a CPU, ROM, RAM, an input port and an output port (not shown), and a program for controlling the CPU is written in the ROM. According to this program, the CPU fetches the external data required from the input port or performs the arithmetic processing while exchanging the data with RAM, and if necessary, the processed data from the output port. Output.

In the electronic device with the detachable panel configured as described above, when the detachable panel section 10 is attached to or detached from the main body section 1, the system microcomputer 2 of the main body section 1 controls the power switch section 6 and the like. The operation of No. 2 will be described with reference to the flowchart of FIG.

The system attachment / detachment detecting unit 3 determines whether the attachment / detachment panel unit 10 is attached to the main body unit 1 or not (step S1).
Generally, when detaching the detachable panel unit 10, the main power switch (not shown) of the main body unit 1 is set to OFF and the detachable panel unit 10 is detached from the main body unit 1.

In this way, when the detachable panel section 10 is detached from the main body section 1, the system microcomputer 2 operates the panel detachable mechanism 4
The detachment operation of the panel 11 is detected by the panel attachment / detachment detector 3, and the microcomputer 11 and the remote controller receiver 12 before detachment of the attachment / detachment panel 10
The system microcomputer 2 receives the setting states such as by the data sent from the microcomputer 11, and stores the pre-leaving information in an internal memory, for example, RAM (step S
2).

After storing the above, the system microcomputer 2 turns on the power switch section 6 for supplying power to the removable panel section 10.
The setting is controlled to FF (step S3), and the operation of the main body 1 is completely stopped by turning off the power (step S4). In this way, the main body 1 stops operating, and the power supply for the removable panel unit 10 also
When turned off, the detachable panel unit 10 is detached from the main body unit 1, and the detachable panel unit 10 can be brought back (step S5).

On the other hand, when the detachable panel section 10 is attached to the main body section 1 (step S1), the main power source of the main body section 1 is turned on.
The system microcomputer 2 determines whether the power is on (step S6). When the main power is off, the system microcomputer 2 stores the operating state of the removable panel unit 10 before power off in the internal memory (step S7). ).

In this way, after the system microcomputer 2 stores the operating state before the power is turned off, the power switch section 6 for supplying power to the detachable panel section 10 is controlled to be off in the same manner as described above, and the operation of the detachable panel section 10 is controlled. At the same time as stopping, the detachable panel unit 10 can be detached from the main body unit 1 in the power-off state and brought back (steps S3 to S5).

When the main power source of the main body unit 1 is turned on (step S6), the system microcomputer 2 sets the power switch unit 6 for controlling the power supply to the detachable panel unit 10.
When the electronic circuit of the detachable panel unit 10 such as the microcomputer 11 of the attachable / detachable panel unit 10 is activated by controlling the switching to ON (step S8), the system microcomputer 2 sends a reset signal to the microcomputer 11 of the detachable panel unit 10, and Reset the circuit operation settings (step S9).

That is, the microcomputer 11 of the removable panel unit 10 is initialized by a reset signal from the system microcomputer 2 (step S10), and the setting state of the removable panel unit 10 which is mounted on the main body unit 1 and is in the power-on operation state is All are automatically reset to the normal state.

As described above, when the detachable panel portion 10 is attached to the main body portion 1 and the electronic device is used, the attached detachable panel portion 10 is initialized, so that the user can cancel the previous setting. Therefore, it is possible to directly and easily perform the desired setting operation, and it is possible to reliably and stably set the operation.

Before the user detaches the detachable panel section 10,
Alternatively, when the detachable panel unit 10 is mounted and set in the setting state before the power is turned off when the power is turned off, the stored information stored in the memory inside the system microcomputer 2 is read and set in the microcomputer 11 of the detachable panel unit 10. It is also possible to easily handle the electronic device continuously in the immediately preceding setting state.

In particular, in the case of an on-vehicle audio device, the vehicle is parked, the detachable panel section 10 is detached, and the detachable panel section 10 is attached to the main body section 1 to restart the vehicle operation, and the immediately preceding music information is continued. When listening, the state before leaving can be easily reproduced and can be conveniently used.

Although the detachable panel section 10 has been described above, the present invention is also applicable to an electronic device or the like which is used as a remote controller by removing a part of the panel of the electronic device, or a system device which is used by combining a plurality of electronic device units. The invention can be applied.

[0051]

As described above, in the electronic device with the detachable panel according to the present invention, the detachable panel portion 10 is attached to the main body portion 1,
When the power is turned on, a reset signal is automatically sent from the system microcomputer 2 of the main unit 1 to the microcomputer 11 of the detachable panel unit 10 to initialize the microcomputer 11, so it is necessary to cancel the previously set setting state. There is no effect, and there is an effect that the user's desired setting can be easily performed.

Further, even if the detachable panel section 10 is momentarily detached for some reason, the power supply to the detachable panel section 10 is automatically turned off and the operation of the main body section 1 is stopped. In the detached state, it is possible to solve the problem that the data communication function with the system microcomputer 2 is confused as in the past, and when the removable panel unit 10 is mounted again, the microcomputer 11 of the removable panel unit 10 is re-installed as described above. Since it is reset, it is possible to prevent the occurrence of problems in data communication.

Further, in the past, when the operation of the electronic device by the identification code is started up, etc., even if the operation cannot be started without the microcomputer 11 of the detachable panel section 10 being reset, in the present invention, when the detachable panel section 10 is attached. , Or power on
Since the reset signal is always sent from the system microcomputer 2 at all times, the operation can be started easily by inputting the identification code from the removable panel section 10.

Further, when the detachable panel section 10 is detached or the power source is
When OFF, the operation setting state of the detachable panel unit 10 immediately before is stored in the memory inside the system microcomputer 2. Therefore, when the user attaches the detachable panel unit 10 again and listens to music continuously, After the microcomputer 11 is initialized by the reset signal, there is an effect that the immediately previous setting state can be easily read from the memory and set.

Moreover, the initialization function for sending a reset signal when the detachable panel section 10 is mounted largely depends on the software of the system microcomputer 2 which is built in, and the function can be improved without increasing the cost. The panel section power supply voltage detection section 30 is unnecessary, and it has excellent features such as easy implementation.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts showing an embodiment of an electronic device with a detachable panel according to the present invention.

FIG. 2 is a flowchart explaining the operation of the present invention.

FIG. 3 is a block diagram of a main part showing a conventional example.

[Explanation of symbols]

 1 Main unit of electronic device 2 System microcomputer 3 Panel attachment / detachment detection unit 4 Panel attachment / detachment mechanism 5 Power supply unit 6 Power switch unit 10 Attachment / detachment panel unit 11 Microcomputer (microcomputer) 12 Remote control (remote control) reception unit 13 Display unit 20 Communication line 21 Reset line 22 Power line

Claims (5)

[Claims] 1. A detachable panel portion which allows a panel of an electronic device to be detachable from a main body portion, both the main body portion and the detachable panel portion incorporate a control microcomputer, and the control microcomputer is connected by a communication line. In an electronic device with a detachable panel, a reset signal generating means is provided in the main body of the electronic device, and the reset signal is sent to the detachable panel part when the detachable panel part is attached or detached. . 2. A panel attachment / detachment detection section is provided with a panel attachment / detachment detection section for detecting attachment / detachment of the attachment / detachment panel section, and a power switch section for supplying power to an electronic circuit provided on the attachment / detachment panel section. The power switch unit is powered on when a panel mounting of the unit is detected, and the reset signal is sent to the detachable panel unit to reset the operating state of the electronic circuit of the detachable panel unit. Electronic device with detachable panel described. 3. The storage means for storing the operation state of the electronic circuit before the detachment panel section is detached when the panel detachment detection section detects the detachment of the detachment panel section. Electronic device with a detachable panel according to 2. 4. The storage device according to claim 1, further comprising storage means for storing an operating state of the electronic circuit of the detachable panel unit before the power is turned off when the main power switch of the electronic device is turned off. Electronic device with detachable panel. 5. The electronic circuit of the detachable panel section includes a remote control receiving section having operation keys, a display section for displaying an operating state, and the like. Electronic device with detachable panel.