JP2005192095A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus in which a robbery prevention effect can be easily and surely improved. <P>SOLUTION: The electronic apparatus comprises: an operation panel which is removably provided on the main body of the apparatus and communicable with the main body of the apparatus and operates the main body of the apparatus in accordance with an operation signal transmitted to the main body of the apparatus; a storage means 65 in which the inherent operation panel ID 99 of the operation panel corresponding to the main body of the apparatus is stored; and a control means 66 for controlling the main body of the apparatus on the basis of the operation signal from the operation panel. The control means 66 is stored and built into the operation panel and comprises a collation and discrimination section for collating and discriminating the operation panel ID which is contained in the operation signal and the operation panel ID 99 stored in the storage means, and a signal processing section which starts the processing of the operating signal when the collation and discrimination section discriminates that the operation panel ID contained in the operation signal is matched with the operation panel ID stored in the storage section 65, and prohibiting the processing of the operation signal when it is discriminated that the operation panel IDs are not matched. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic device including an operation panel.

Conventionally, as an anti-theft measure for electronic devices, the operation panel is removed from the device main body, and the anti-theft panel and the device main body are mounted so as to cover the portion where the operation panel was mounted. Is locked with a dedicated key to make the electronic device inoperable (see Patent Document 1).
On the other hand, some electronic devices can be operated by remote operation means such as a remote controller in addition to the operation panel of the device main body, thereby improving convenience.
For example, in various multimedia electronic devices used for music / video appreciation and for presentations such as conferences, the device itself is installed at a predetermined location to output sound and images, etc., and a remote controller Therefore, it is possible to easily operate output reproduction, stop, volume adjustment, image contrast adjustment, and the like at hand.

JP-A-8-260794 (paragraph [0005], FIG. 11)

However, in Patent Document 1, an anti-theft panel and a dedicated key are required, and replacement work between the operation panel and the anti-theft panel and locking / unlocking of the dedicated key are complicated. Since the dedicated key is not used while the electronic device is in use, it may be lost.
In addition, even if the operation panel is removed from the device main body as described above and the operation is restricted, the stolen device main body may be used by an optional remote controller, which prevents theft from being effectively prevented. It was.
Furthermore, in recent years, as electronic devices have become smaller and lighter, the problem of theft has become more serious, and new antitheft measures need to be taken.

  In view of the above problems, an object of the present invention is to provide an electronic device that can easily and reliably improve the antitheft effect.

An electronic device according to the present invention is detachably provided in a device main body, can communicate with the device main body, and operates the device main body according to an operation signal transmitted to the device main body. And a control means for controlling the device main body based on an operation signal from the operation panel, the control means comprising: A collation determining unit that collates and determines the operation panel ID contained in the operation signal and stored in the operation signal and the operation panel ID stored in the storage unit, and is included in the operation signal by the collation determining unit. When it is determined that the operation panel ID matches the operation panel ID stored in the storage means, the processing of the operation signal is started. Characterized in that it comprises a signal processing unit for prohibiting processing of No..
Here, the operation panel is not limited to the one bundled with the apparatus body, and an operation panel sold separately can also be used. And operation | movement of the apparatus main body by an operation panel is restrict | limited by determination of operation panel ID provided for every operation panel.

According to this invention, the operation of the device main body by the operation panel other than the operation panel ID stored in the device main body is restricted. Thereby, since an operation panel such as an option can be obtained and the device body stolen cannot be operated, the antitheft effect can be surely improved.
In addition, due to such restrictions on the use of the operation panel, the use of the electronic device may not be performed because it is operated on its own by another operation panel with an operation panel ID that is not stored or is operated incorrectly. It can avoid being obstructed.
In addition, when the electronic device is not in use, the operation panel can be removed from the device main body and stored separately from the device main body. It can contribute to improvement.

  Here, since the prevention of theft is achieved by introducing the operation panel ID collation determination as described above, the operation panel mounting portion of the device main body is not provided so that the operation panel cannot be physically mounted as in the past. It is no longer necessary to cover the anti-theft panel and mechanically lock the anti-theft panel with a dedicated key. Therefore, there is no trouble such as replacement of the panel and locking / unlocking of the dedicated key, and there is no fear of losing the antitheft panel or the dedicated key, and the antitheft effect can be easily improved. .

Furthermore, since the operation panel is configured to be detachable, the operation panel can be used as a remote operation means. As a remote operation method, an infrared method, a laser method, or the like can be adopted. In conventional antitheft measures, the operation panel was removed when the electronic device was not used, and the removed operation panel was only stored separately from the main body of the device. However, in the present invention, the removed operation panel is used for the electronic device. Also used inside.
In addition, by concentrating the operation buttons on the operation panel side and not providing the main operation buttons on the device body side or operation buttons that overlap the operation panel, the anti-theft effect by removing the operation panel is more effective. In addition, since the operation method for each function of the electronic device is unified, the design can be simplified and the cost can be reduced, and the operability can be improved by preventing the confusion of the operation.

Further, as the operation panel, a panel in which various operation buttons serving as operation means corresponding to each function of the device main body are arranged, a liquid crystal touch panel, or the like can be adopted. Furthermore, it is convenient to display information such as the state of the device body on the operation panel.
Note that the operation panel ID format and the like can be arbitrarily selected, and when the operation panel ID is encrypted during communication between the operation panel and the device body, illegal interception of the operation panel ID can be dealt with. There are various methods for this encryption. For example, a set of public key data and private key data is generated, and the device main body and the operation panel are connected via public key encryption and private key decryption. A public key cryptosystem that encrypts communication can be adopted.
Then, it is possible to provide a mode in which the operation of the device main body is not restricted by the operation panel ID, and it is possible to restrict the operation for each function of the device main body.

In the electronic device of the present invention, the storage means stores a password for managing the operation authority,
If the control determining unit determines that the operation panel ID included in the operation signal does not match the stored operation panel ID, the control means prompts the operator to input a password, and an input A password determination unit that verifies the password stored and the password stored in the storage unit, and the signal processing unit matches the password input by the password determination unit with the password stored in the storage unit When it is determined, it is preferable to start processing the operation signal.

  According to the present invention, even if the operation panel ID is not stored in the storage means, that is, unregistered, the operation of the operation panel ID by the operation panel is permitted by the input / verification of the password. This makes it possible to use another operation panel while preventing theft by password verification (authentication), such as when the operation panel is damaged or lost, or when remote operation is performed using multiple operation panels. High convenience.

  Here, when an unregistered operation panel ID is received and the password is input / verified, if this operation panel ID is stored in the storage means and registered, the operator will be informed about the operation panel ID thereafter. You are not prompted for a password. That is, when the operation panel is used for the first time, the operation panel ID is registered in the storage means by only inputting the password once, so that the new operation panel can be easily used.

  In the electronic device according to the present invention, the control means may be configured to remotely operate the device body when the operation panel is removed from the device body, or in a state where the operation panel is removed. It is preferable to include a mode setting unit that sets an anti-theft mode in which an alarm signal is issued when it is detected that the power has been shut off.

Here, the electronic device has an anti-theft mode and a remote operation mode when the operation panel is removed.
In the remote operation mode, the operation panel is removed from the device main body in advance, no operation signal is received, and the no-operation time is measured while the operation panel is not attached to the device main body. It is preferable that at least one of sound, light, and vibration is called when time passes. At this time, if necessary, for example, a signal is transmitted from the device main body to the operation panel using a radio transmission method using radio waves, light, ultrasonic waves, etc., and a signal such as sound, light, vibration, etc. is called out. Can do.
In addition, when there are a plurality of operation signals, which operation signal is to be measured is arbitrary. The measurement of the no-operation time may be reset by attaching the operation panel to the device main body.
About the predetermined time regarding a non-operation time, it can set arbitrarily. In addition, when measuring a no-operation time, when a clock is incorporated in the device main body or the operation panel, the function of this clock can be used.

According to the present invention, when the remote operation mode is set, the operation panel is detached from the apparatus body and used, and when there is no operation for a predetermined time, as an alarm for notifying the loss of the operation panel, sound, light, vibration, etc. Can be called from the operation panel. As a result, the operation panel taken out can be easily found by tracing the light, sound, vibration and other sources.
In addition, when there is a means for measuring no operation time or means for executing the remote operation mode on the operation panel side, the device main body and the operation panel communicate with each other due to the positional relationship and distance between the device main body and the operation panel. Even if it is impossible, the alarm can be reliably generated from the operation panel. Therefore, it is possible to effectively prevent the loss of the operation panel that is easily lost during taking out.

On the other hand, in the anti-theft mode, just set to the mode, and when the power source of the device is shut off by the power cable plug being disconnected or disconnected from the external power source, the theft occurrence is notified Since an alarm signal is issued, it is possible to easily prevent theft.
Note that, depending on the type and use state of the electronic device, it may be difficult to visually determine that the energization has been stopped, so that the anti-theft effect can be achieved even during use of the electronic device.
Further, when power is required for the means for detecting the interruption of the power supply or the means for issuing an alarm signal, power can be supplied to these means from the primary battery or the secondary battery.

Here, it is considered that it is not always appropriate to set both the remote operation mode and the anti-theft mode at the same time depending on the usage mode of the electronic device.
In other words, if both modes are set at the same time, if the operation panel and the main unit are stored separately to prevent theft, the above alarm will be output without any operation of the removed operation panel. In other words, the location of the operation panel stored separately from the device is also indicated, which is not appropriate.
Also, if both modes are set at the same time, an alarm will be output if the power cable is unplugged when cleaning up the electronic device, which is also considered inappropriate.

Therefore, it is preferable that the mode setting unit selects and sets one of the anti-theft mode and the remote operation mode and cancels the setting of the other mode.
When the mode is selected and the setting is switched as described above, the remote operation mode and the remote operation mode are not set at the same time. Therefore, even when the simultaneous setting of both modes is not appropriate for the use of the electronic device, there is an inconvenience. Without a reasonable design.
In addition, with respect to these remote operation modes and remote operation modes, each mode can be set or canceled at once by operating means such as a changeover switch without setting / releasing each mode independently, thus simplifying the operation. it can.

In the electronic device according to the aspect of the invention, it is preferable that the control unit includes a state determination unit that determines whether the operation panel is attached to or removed from the device main body.
Here, as a method of determining the state of the operation panel by the state determination unit, it can be realized through detection of electrical conduction between the operation panel and the apparatus main body, communication using radio waves, light, ultrasonic waves, or mechanical means. The communication means in this case can be widely adopted regardless of wired or wireless. For example, various interfaces such as those using electromagnetic induction, infrared communication based on IrDA, proprietary standards, etc., Bluetooth, wireless LAN, USB, and SCSI can be adopted.

According to the present invention, since the state determination unit determines the attachment / detachment state of the operation panel, the determination result can be used for processing control of each function of the electronic device, and the processing is automatically distributed according to the attachment / detachment state of the operation panel. Can be branched.
As a result, when the operation panel is removed from the device body, the operator is prompted to select the setting or cancellation of the above-described remote operation mode and anti-theft mode, or the operation panel is mounted on the device body. It is also possible to invalidate the remote operation mode and the anti-theft mode, and the convenience can be sufficiently improved.
In addition, in a state where the operation panel is mounted, it is possible to stop the power supply to the remote operation signal receiving unit, thereby saving power.
Furthermore, if mounting / removal of the operation panel is indicated by lighting the lamp of the apparatus main body, even when the electronic apparatus is used in a dark place, the attachment / detachment state of the operation panel is easily recognized, which is excellent in convenience.

  In the electronic device of the present invention, the device main body is provided on a panel mounting portion on which the operation panel is mounted, and on the panel mounting portion and an outer peripheral portion of the device main body, and receives a plurality of operation signals from the operation panel. A signal receiving unit, and the state determining unit determines that the operation panel is mounted when the operation signal is received only by the signal receiving unit of the panel mounting unit, and receives the signal of the panel mounting unit. It is preferable to determine that the operation panel has been removed when the operation signal is received by the control unit and the other signal receiving unit.

According to the present invention, when the operation panel is removed from the panel mounting portion and the device main body is remotely operated, the operation signal reaches an arbitrary signal receiving portion, whereas the operation panel is moved to the panel mounting portion. When it is mounted, the operation signal from the operation panel is blocked by the panel mounting section, and does not reach the signal receiving section in a portion other than the panel mounting section.
As a result, it is determined that the operation panel is mounted only when an operation signal is received by the signal receiving unit of the panel mounting unit. Therefore, the signal method for detecting the mounting state of the operation panel is changed to the remote control. Therefore, the design can be simplified and the manufacturing cost can be reduced.

In the electronic device of the present invention, the device main body includes a signal transmission unit that transmits a signal to the operation panel, and the control unit transmits a search signal from the signal transmission unit to the operation panel. A signal transmission unit, and the operation panel receives a search signal from the search signal transmission unit, and when the signal reception unit receives the search signal, at least one of sound, light, and vibration signals It is preferable to include a signal calling unit for calling.
Here, a push button, a liquid crystal touch panel, or the like can be employed as the operation means for executing the search signal transmission unit.
As a search signal wireless transmission method, for example, a method using radio waves, light, ultrasonic waves, or the like can be employed.

According to the present invention, when a search signal is transmitted from the device main body, sound, light, vibration, or the like is generated from the operation panel as an alarm notifying the location of the operation panel. Thus, the location of the operation panel can be confirmed by following the alarm source. By searching for the operation panel in this way, it is possible to effectively prevent the operation panel from being lost.
When the device body is stolen, the location of the operation panel is known by transmitting a search signal, and the operation panel may be stolen together with the device body. Therefore, when the anti-theft mode is set, the search signal is intentionally Is preferably disabled.

In the electronic device of the present invention, the device main body is provided with a signal transmission operation unit for transmitting a search signal from the search signal transmission unit, and the signal transmission operation unit is provided on the device main body to which the operation panel is attached. It is preferable to be provided in the panel mounting part.
According to the present invention, when the operation panel is in the mounted state, the signal transmission operation unit is concealed by the operation panel and is not exposed to the outside, so that the signal transmission operation unit can be prevented from malfunctioning.

  Here, when the operation panel is in the mounted state, it is not necessary to search for the operation panel. Rather, it is considered that execution of the search signal transmission unit is not preferable. Therefore, the position of the signal transmission operation unit in the device body can be rationally designed, and when the operation panel is not mounted, the signal transmission operation unit provided in the mounting portion of the device body is operated. Because it is good, it is excellent in operability.

The electronic apparatus according to the present invention is preferably a projector that modulates a light beam emitted from a light source according to image information to form an optical image, and performs enlarged projection.
According to the present invention, it is possible to provide a projector that exhibits the operations and effects described above and can easily and reliably improve the anti-theft effect.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a projector 1 as an electronic apparatus according to this embodiment. The projector 1 includes a device main body 2 that enlarges and projects a moving image on a screen from a projection lens 3, and an operation panel 7 that is detachably provided on the device main body 2 and also serves as a remote control unit of the device main body 2. ing.

  The apparatus main body 2 includes a projection lens 3, an exterior case 5, an optical system 4 (FIG. 2), and an electrical system 6 (FIG. 3).

The optical system 4 modulates the light beam emitted from the light source device according to image information to form an optical image, and forms a projected image on the screen via the projection lens 3. FIG. 2 schematically shows the optical system 4. The optical system 4 is functionally broadly classified into an integrator illumination optical system 41, a color separation optical system 42, a relay optical system 43, and an optical device 44 in which a light modulation device and a color synthesis optical device are integrated. .
The integrator illumination optical system 41 is an optical system for making the luminous flux emitted from the light source uniform in the illumination optical axis orthogonal plane. As shown in FIG. 8, the integrator illumination optical system 41 includes a light source device 411, a first lens array 412, a second lens array 413, a polarization conversion element 414, and a superimposing lens 415.

  The light source device 411 includes a light source lamp 416 as a radiation light source, a reflector 417, and an explosion-proof glass 418 that covers a light exit surface of the reflector 417. The radial light flux emitted from the light source lamp 416 is reflected by the reflector 417 to be a parallel light flux, and is emitted to the outside. In the present embodiment, a high-pressure mercury lamp is used as the light source lamp 416, and a parabolic mirror is used as the reflector 417. The light source lamp 416 is not limited to a high-pressure mercury lamp, and may be a metal halide lamp, a halogen lamp, or the like. Moreover, although the parabolic mirror is employ | adopted as the reflector 417, you may employ | adopt the structure which has arrange | positioned the collimating concave lens to the output surface of the reflector which consists of not only this but an ellipsoidal mirror.

The first lens array 412 has a configuration in which small lenses having a substantially rectangular outline when viewed from the illumination optical axis direction are arranged in a matrix. Each small lens splits the light beam emitted from the light source lamp 416 into partial light beams and emits them in the direction of the illumination optical axis.
The second lens array 413 has a configuration similar to that of the first lens array 412, and includes a configuration in which small lenses are arranged in a matrix. The second lens array 413 has a function of forming an image of each small lens of the first lens array 412 on liquid crystal panels 441R, 441G, and 441B described later of the optical device 44 together with the superimposing lens 415.

The polarization conversion element 414 converts the light from the second lens array 413 into a single type of polarized light, thereby improving the light use efficiency in the optical device 44.
Specifically, each partial light beam converted into one type of polarized light by the polarization conversion element 414 is finally superimposed on liquid crystal panels 441R, 441G, 441B (to be described later) of the optical device 44 by the superimposing lens 415. In a projector using liquid crystal panels 441R, 441G, and 441B of a type that modulates polarized light, only one type of polarized light can be used. Therefore, half of the light flux from the light source lamp 416 that emits randomly polarized light is not used. For this reason, by using the polarization conversion element 414, the light beam emitted from the light source lamp 416 is converted into one kind of polarized light, and the light use efficiency in the optical device 44 is enhanced. Such a polarization conversion element 414 is introduced in, for example, Japanese Patent Application Laid-Open No. 8-304739.

The color separation optical system 42 includes two dichroic mirrors 421 and 422 and a reflection mirror 423. The plurality of partial light beams emitted from the integrator illumination optical system 41 are separated into three color lights of red (R), green (G), and blue (B) by two dichroic mirrors 421.
The relay optical system 43 includes an incident side lens 431, a relay lens 433, a UV cut filter 434, and reflection mirrors 432 and 435. The relay optical system 43 has a function of guiding blue light, which is color light separated by the color separation optical system 42, to a liquid crystal panel 441B described later of the optical device 44.

  At this time, in the dichroic mirror 421 of the color separation optical system 42, among the light beams emitted from the integrator illumination optical system 41, the green light component and the blue light component are transmitted, and the red light component is reflected. The red light reflected by the dichroic mirror 421 is reflected by the reflection mirror 423, passes through the field lens 424, and reaches the red liquid crystal panel 441R. The field lens 424 converts each partial light beam emitted from the second lens array 413 into a light beam parallel to the central axis (principal ray). The same applies to the field lens 424 provided on the light incident side of the other liquid crystal panels 441G and 441B.

Of the blue light and green light transmitted through the dichroic mirror 421, the green light is reflected by the dichroic mirror 422, passes through the field lens 424, and reaches the liquid crystal panel 441G for green light. On the other hand, the blue light passes through the dichroic mirror 422, passes through the relay optical system 43, passes through the field lens 424, and reaches the liquid crystal panel 441B for blue light.
The reason why the relay optical system 43 is used for blue light is that the optical path length of the blue light is longer than the optical path lengths of the other color lights, thereby preventing a reduction in light use efficiency due to light divergence or the like. Because. That is, this is to transmit the partial light beam incident on the incident side lens 431 to the field lens 424 as it is. The relay optical system 43 is configured to pass blue light of the three color lights, but is not limited thereto, and may be configured to pass red light, for example.

  The optical device 44 modulates an incident light beam according to image information to form a color image. The optical device 44 includes three incident-side polarizing plates 442 to which the respective color lights separated by the color separation optical system 42 are incident, and three viewing angle correction plates 443 disposed at the subsequent stage of the incident-side polarizing plates 442, In addition, liquid crystal panels 441R, 441G, and 441B as light modulation devices and an exit-side polarizing plate 444 disposed in the subsequent stage of each viewing angle correction plate 443, and a cross dichroic prism 445 as a color synthesizing optical device are provided.

  The liquid crystal panels 441R, 441G, and 441B use, for example, polysilicon TFTs as switching elements, and the liquid crystal is hermetically sealed in a pair of transparent substrates arranged opposite to each other. The liquid crystal panels 441R, 441G, and 441B modulate and emit the luminous flux incident through the incident side polarizing plate 442 and the viewing angle correction plate 443 according to image information. The liquid crystal panels 441R, 441G, and 441B are stored and held by a holding frame (not shown).

The incident side polarizing plate 442 transmits only polarized light in a certain direction out of each color light separated by the color separation optical system 42 and absorbs other light beams. A polarizing film is attached to a substrate such as sapphire glass. It has been done.
The exit side polarizing plate 444 is configured in substantially the same manner as the incident side polarizing plate 442, and transmits only polarized light in a predetermined direction among the light beams emitted from the liquid crystal panels 441R, 441G, and 441B, and absorbs other light beams. The polarization axis of the polarized light to be transmitted is set so as to be orthogonal to the polarization axis of the polarized light to be transmitted by the incident side polarizing plate 442.

The viewing angle correction plate 443 is obtained by forming an optical conversion film having a function of correcting the viewing angle of the optical image formed by the liquid crystal panels 441R, 441G, 441B on the substrate. The viewing angle correction plate 443 compensates for the birefringence that occurs in the liquid crystal panels 441R, 441G, and 441B. The viewing angle correction plate 443 enlarges the viewing angle of the projected image and improves the contrast of the projected image.
The cross dichroic prism 445 forms a color image by synthesizing optical images emitted from the emission-side polarizing plate 444 and modulated for each color light. In the cross dichroic prism 445, a dielectric multilayer film that reflects red light and a dielectric multilayer film that reflects blue light are provided in an X shape along the interfaces of four right-angle prisms. Three color lights are synthesized by the multilayer film.
The liquid crystal panels 441R, 441G, and 441B described above, the exit-side polarizing plate 444, and the cross dichroic prism 445 are integrally unitized.

  The exterior case 5 is a housing formed in a rectangular parallelepiped shape. A plurality of connectors 52 to which a power cable and an external input cable are connected are provided in a recess 51 formed on the back side of the exterior case 5 opposite to the front side of the exterior case 5 on which the projection lens 3 is provided. A panel mounting portion 53 on which the operation panel 7 is mounted is formed on the upper surface portion. Further, on the front side and the back side of the outer case 5, one second signal transmission window 54 that transmits a remote operation signal by infrared rays of the operation panel 7 is provided one by one.

  The panel mounting portion 53 is formed as a concave portion in which the surface of the outer case 5 is recessed. A first signal transmission window 531 that transmits an operation signal from the operation panel 7 is provided on the inner surface of the concave portion on the back side of the panel mounting portion 53. Further, a connector 532 for supplying power from the device main body 2 to the operation panel 7 is provided at the bottom portion of the panel mounting portion 53, and a recess 533 is formed. A push-in type search button 534 as a signal transmission operation unit is provided so as to fit inside the recess 533. The search button 534 is electrically connected to a circuit board inside the device main body 2.

FIG. 3 is a block diagram showing the configuration of the electrical system 6. The electrical system 6 includes a power supply unit 61, a light source driving unit 62, an infrared unit 64, a storage device 65 as a storage unit, a control board 66 as a control unit, and a security device 63. Yes.
Here, the power supply unit 61 is formed to include a transformer or the like that converts the alternating current of the external power source into a low-voltage direct current, and the power from the external power source S is supplied to the electrical system 6 through the power cable connected to the connector 52. Supply in.
In addition, the power supply unit 61 automatically stops the supply of power into the electrical system 6 when the input operation by pressing the operation button 72 or the operation panel 7 is not attached to the device body 2 for a predetermined time. To do. Thereby, the power consumption accompanying the voltage conversion loss etc. in the electric system 6 is suppressed, and power saving can be achieved. The unit for stopping the power supply differs depending on the anti-theft mode M1 / remote operation mode M2 (FIG. 4). Further, when the return button (not shown) provided on the device body 2 is pressed, the power saving state is restored.
The light source driving unit 62 includes a transformer that converts the voltage into a predetermined voltage, a power storage capacitor, a resistor, and the like, and supplies power to the light source device 411 with a stable voltage.

  In the infrared unit 64, communication between the operation panel 7 and the device main body 2 is performed. The infrared unit 64 includes a first signal transmission / reception unit 641 for detecting the mounting state when the operation panel 7 is mounted, and a second signal transmission / reception unit 642 for transmitting / receiving a remote operation signal. . The first signal transmission / reception unit 641 and the second signal transmission / reception unit 642 are provided at positions corresponding to the first signal transmission window 531 and the second signal transmission window 54 provided in the exterior case 5, respectively. Through the window 531 and the second signal transmission window 54, infrared communication of a predetermined method is performed between the device main body 2 and the operation panel 7.

  The first signal transmitting / receiving unit 641 and the second signal transmitting / receiving unit 642 have an infrared light emitting diode as a light emitting element and a photodiode as a light receiving element, and the infrared light receiving half-value angle is set to 45 °, for example. ing. One of the first signal transmission / reception unit 641 and the two second signal transmission / reception units 642 that can communicate with the operation panel 7 according to the half-value angle of light reception and the positional relationship between the operation panel 7 and the device body 2. The above transmission / reception unit is determined.

Here, when radio waves instead of infrared rays are used as communication means, radio waves diffuse, whereas infrared rays used here have a narrow directivity, so that the operation panel 7 is attached to the panel attachment portion 53. The side wall of the panel mounting portion 53 becomes an obstacle and communication between the operation panel 7 and the second signal transmission / reception unit 642 is not possible, and communication is performed only between the operation panel 7 and the first signal transmission / reception unit 641. Is done. Therefore, when the operation panel 7 can communicate with the first signal transmission / reception unit 641 and cannot communicate with the second signal transmission / reception unit 642, the operation panel 7 is mounted on the panel mounting unit 53. When the signal is received by the first signal transmitting / receiving unit 641 and the second signal transmitting / receiving unit 642 or only received by the second signal receiving unit 642, the operation panel 7 is removed from the panel mounting unit 53. It can be determined that the user is in the remote operation state. Such a mounting state of the operation panel 7 is repeatedly detected by the panel state determination unit 672 (FIG. 4) under a predetermined driving frequency.
For detecting the mounting state of the operation panel 7, wireless communication other than infrared communication, USB connection, or the like can be adopted as a communication means between the first signal transmission / reception unit 641 and the operation panel 7. If the same communication method is used for the 641 and the second signal transmission / reception unit 642 for remote operation signal transmission / reception, the wiring can be easily manufactured in parallel, and the manufacturing cost can be reduced.

The storage device 65 stores, as data in the database 651, an operation panel ID 99 of the operation panel 7 attached to the apparatus main body 2 when the projector 1 is shipped and a management password 100 at the manufacturing stage.
The operation panel ID 99 is a unique identification ID assigned to each operation panel 7. The management password 100 is used to manage the operation authority of the operation panel 7 and is secretly managed among those who have the authority to use the projector 1. These operation panel ID 99 and management password 100 are an arbitrary combination of alphanumeric characters and symbols, and a predetermined number of digits is determined for each operation panel ID 99 and management password 100.

FIG. 4 is a block diagram showing the configuration of the control board 66, and the control board 66 is an internal circuit that controls the operation panel 7 and the device main body 2 through communication with the operation panel 7. The control board 66 is mounted with an electric signal conversion unit 661 and an infrared signal conversion unit 662 related to input / output of the infrared unit 64, and an arithmetic device 690 that performs an operation when the device main body 2 operates.
In the memory portion of the arithmetic device 690, a database management unit 663, a collation determination unit 664, a password input reception unit 665, a password determination unit 666, and a signal processing regarding the operation panel ID 99 and the management password 100 stored in the storage device 65 are stored. Unit 667, each function execution unit 668 that executes processing according to each function of device main body 2, and mode setting unit 669 are read as software programs that can be executed on arithmetic device 690 and executed as appropriate. Is done.
In addition, the control board 66 has a timer 671, a panel state determination unit 672 as a state determination unit, a search signal transmission unit 673 that is a circuit board side portion of the search button 534, and the operation panel 7 regarding the loss of the operation panel 7. A main body state detection unit 680 that detects information of the device main body 2 to be transmitted is mounted.
Note that the mounting manner of the control board 66 and the configuration of the software program executed on the arithmetic device 690 can be designed arbitrarily. For example, the timer 671 may be a software timer that uses the number of clocks of the arithmetic device 690.

The device body 2 is operated by the operation panel 7 through the operation by the control board 66 as described above.
Here, the projector 1 has two modes of an anti-theft mode M1 and a remote operation mode M2 when the operation panel 7 is removed. The mode setting unit 669 stores a value indicating the mode being set, which is one of the anti-theft mode M1 and the remote operation mode M2, and thereby holds the mode setting state of the device main body 2. The anti-theft mode M1 is a mode in which the anti-theft function of the device main body 2 is activated, and the remote operation mode M2 is a mode in which the operation panel 7 is detached from the device main body 2 and is remotely operated. In this mode, when the operation panel 7 is not operated for a period of time, a loss of the operation panel 7 is notified by an alarm occurrence.

As shown in FIG. 1, the operation panel 7 is formed in a substantially rectangular flat card shape. On the front side of the operation panel 7, a liquid crystal display unit 71 that displays information related to the device main body 2 with liquid crystal and various operation buttons 72 are provided. These operation buttons 72 correspond to main functions such as reproduction, stop, sound volume adjustment, color contrast adjustment of the projection image, mode switching, and the like by the device main body 2. Operation buttons corresponding to the button 72 are not provided. That is, the operation means that is the main function of the device main body 2 is occupied by the operation panel 7. Therefore, when there are a plurality of operation methods for the same function, the design is useless and the operation is confused. On the other hand, in this embodiment, the operation methods for realizing the respective functions of the device main body 2 are Because it is centralized in one operation method such as pressing, rotating, sliding, etc. of the predetermined operation button 72, it can contribute to the improvement of operability by preventing confusion on the operation of the user, and simplifying the design Cost can also be reduced.
As one of the operation buttons 72, a mode switching button 721 for switching between the anti-theft mode M1 and the remote operation mode M2 which are modes of the device main body 2 is provided. By pressing the mode switching button 721, the mode M1 / M2 can be easily switched.
In addition, a signal transmission window 73 for an infrared signal transmitted / received to / from the device main body 2 is provided on one end surface of the operation panel 7.
And although illustration is abbreviate | omitted on the back side of the operation panel 7, the battery accommodating part in which the electrode and the secondary battery were incorporated is formed.

Such an operation panel 7 is housed in the panel mounting portion 53 with the surface on which the liquid crystal display portion 71 and the operation buttons 72 are provided being the front side, and is mounted on the device main body 2.
At this time, the position of the signal transmission window 73 and the first signal transmission window 531 of the panel mounting portion 53 overlap, and the device body 2 and the operation panel 7 can communicate with each other via the infrared units 64 and 81 (FIG. 5). It becomes. Further, while the operation panel 7 is mounted on the device main body 2, the connector 532 of the panel mounting portion 53 contacts the electrode on the back of the operation panel 7, and the power required for the operation panel 7 is obtained from the built-in secondary battery. Instead, it is supplied from the external power source S via the connector 532.
When the operation panel 7 is accommodated in the panel mounting portion 53, the search button 534 is concealed on the back side of the operation panel 7. By arranging the search button 534 at such a position, the operation panel 7 is attached to the apparatus main body 2, that is, the search button 534 is erroneously executed even though the location of the operation panel 7 is clear. Can be prevented.

Further, the operation panel 7 is detached from the panel mounting portion 53 and can be used as a remote operation means of the device main body 2. In this case, the electric power required for the operation of the operation panel 7 is supplied from the built-in secondary battery.
Here, when the projector 1 is stored, the operation panel 7 is stored separately from the device body 2. In this state, it is clear from the appearance that the operation panel 7 has been removed from the panel mounting portion 53. Without the operation panel 7, reproduction of the device main body 2 and image quality adjustment cannot be performed. Can not be used, so that the anti-theft effect can be achieved.

  FIG. 5 is a block diagram showing an internal configuration of the operation panel 7. Inside the operation panel 7, a signal receiving unit that communicates with the device main body 2 and an infrared unit 81 as a signal transmitting unit are provided, and an infrared signal conversion unit 82 related to input / output of the infrared unit 81 is provided on the internal circuit board. In addition, an electrical signal conversion unit 83 and an ID storage unit 84 in which a unique operation panel ID 99 is stored at the manufacturing stage are mounted. In addition, the operation panel 7 includes a vibration unit 85 and a speaker 86, and the vibration unit 85 and the speaker 86 together with the liquid crystal display unit 71 correspond to a signal calling unit.

Operations of the device main body 2 and the operation panel 7 will be described with reference to FIGS.
When the operation button 72 is pressed, an operation signal OP including an operation panel ID 99 stored in the ID storage unit 84 and a function ID for each function corresponding to the pressed operation button 72 is transmitted from the operation panel 7 to the device. It is transmitted to the main body 2 (FIG. 5). Here, the operation signal OP is converted from an electric signal on the circuit board in the operation panel 7 to an infrared signal by the electric signal conversion unit 83 (FIG. 5), and the apparatus main body 2 on the receiving side via the infrared units 81 and 64. The infrared signal converter 662 converts the signal again into an electrical signal (FIG. 4).
Contrary to the above, when a signal is transmitted from the device body 2 to the operation panel 7, the electric signal in the control board 66 is converted into an infrared signal by the electric signal conversion unit 661 (FIG. 4), and the infrared unit. 64 and 81, the infrared signal conversion unit 82 of the operation panel 7 on the reception side converts the signal again into an electric signal (FIG. 5).

Then, the operation signal OP transmitted from the operation panel 7 and received by the device main body 2 is input from the infrared signal conversion unit 662 to the verification determination unit 664 of the device main body 2 via the timer 671 (FIG. 4).
FIG. 6 shows a processing procedure of the collation determination unit 664.
The collation determination unit 664 acquires the operation panel ID 99 from the input operation signal OP (S1), and inquires of the database 651 about the operation panel ID 99 via the database management unit 663 (S2). When the operation panel ID 99 is stored in the database 651 (registered), the operation related to the operation panel ID is permitted by outputting the input operation signal OP to the signal processing unit 667. In this way, the processing of the operation signal OP is started by the signal processing unit 667 (S5), and processing corresponding to the operation signal OP is executed by each function execution unit 668.
The same operation panel ID 99 is stored at the manufacturing stage in the database 651 of the device main body 2 and the ID storage unit 84 of the operation panel 7 mounted on the device main body 2 at the time of product shipment. When the device main body 2 is operated by the above, the above processing flow is performed. When the operation panel ID stored in the ID storage unit 84 of the operation panel 7 is stored in the database 651 regardless of whether the operation panel 7 to be used is attached to the device main body 2 at the time of product shipment. The processing procedure (S1, S2, S5) is the same as above.

On the other hand, when the operation panel 7 included in the package is lost or damaged, and the operation panel 7 (sold separately) is obtained and used, or the operation panel 7 is purchased and the new operation panel 7 is used. If so, the following processing procedure is performed.
That is, in this case, it is determined that the operation panel ID 99 is not stored (unregistered) in the database 651 as a result of the operation panel ID inquiry (S2) by the collation determination unit 664. The processing is suspended, and control is transferred from the collation determining unit 664 to the password input receiving unit 665 (FIG. 4), and the process proceeds to the management password 100 input procedure (S3).

  Here, the password input reception unit 665 transmits a signal RQ for requesting the input of the management password 100 to the operation panel 7 (FIG. 4). In response to this signal RQ, the characters “Please enter the management password” are displayed on the liquid crystal display 71 of the operation panel 7. In response to this display, when the operation button 72 is pressed and the management password 100 is input, the input password PW is signaled and transmitted from the operation panel 7 to the device main body 2 and input to the password determination unit 666.

The password determination unit 666 inquires of the database 651 about the input password PW (S4). If the input password PW is stored in the database 651 (successful authentication), the signal processing unit displays the operation signal OP that has been suspended. By outputting to 667, an operation related to the operation panel ID 99 is permitted. Thereby, the processing of the operation signal OP is started by the signal processing unit 667 (S5), and processing corresponding to the operation signal OP is executed by each function execution unit 668.
When the authentication of the input password PW is successful, an inquiry signal RG is transmitted to the operation panel 7, and the characters “Do you want to newly register your operation panel? Yes / No” are displayed on the liquid crystal display unit 71. Is displayed. Here, when “Yes” is answered by the operation button 72, the operation panel ID 99 of the operation panel 7 is registered in the database 651 by the database management unit 663. Thereafter, as long as the operation panel ID 99 is registered in the database 651, the management password 100 input / authentication procedure is not performed, so that there is no complication.
By inputting the management password 100 as described above, a new operation panel 7 that is not stored at the manufacturing stage can be used, and convenience can be improved.

On the other hand, the management password 100 is secretly managed among those who have authority to use the projector 1, and even if a user who does not know the management password 100 enters a random password, the management password 100 is not authenticated.
That is, when the operation panel ID 99 is not registered and the input password PW is not authenticated, the signal processing unit 667 prohibits the processing of the operation signal OP (S6).
As described above, the input of the management password 100 prohibits the operation of the device main body 2 by an unauthorized operator having no use authority.

The operation limitation of the operation panel 7 by the collation determination unit 664 as described above is repeatedly performed every time the operation signal OP is transmitted from the operation panel 7 and is input to the collation determination unit 664. That is, each time the operation panel 7 is operated to play back, stop, adjust the volume of the sound, adjust the color contrast of the projection image, etc., by the device main body 2, the operation panel ID is determined by the collation determining unit 664. Processing of operations by is permitted or prohibited. Accordingly, it is possible to prevent the projection of the projector 1 from being disturbed by mischief or the like, such as an operator who does not have the use authority operating the device body 2 without permission using the unregistered operation panel 7.
In addition, information regarding the state of the device main body 2 detected by the main body state detection unit 680 while the projector 1 is in use is transmitted to the operation panel 7. The liquid crystal display unit 71 displays, for example, various information such as the current mode setting status, the type of external input, the name of the moving image being projected, and the projection time. However, it is convenient because the state of the device main body 2 can be easily confirmed.

Such a projector 1 is stolen when the operation panel 7 and the device main body 2 are separated and stored separately when not in use, and the operation panel 7 is clearly removed. It is preferable in terms of management.
Further, while the projector 1 is not used, the apparatus main body 2 is connected to the external power source S with a power cable, and the anti-theft mode M1 is set by operating the mode switching button 721 on the operation panel 7. preferable.
Here, referring back to FIG. 3, the security device 63 is a device for preventing the device main body 2 from being stolen with respect to energization of the device main body 2 from the external power source S, and is set in the anti-theft mode M1. Only works. The security device 63 includes a power cutoff sensor 632, a speaker 633 that emits an alarm signal, and a secondary battery 634 such as a lithium battery that supplies power necessary for the operation of the power cutoff sensor 632 and the speaker 633. Yes.
The power shutoff sensor 632 is configured to include a current-carrying portion from the external power source S to the device main body 2, an amplifier circuit, and a voltage comparison circuit (comparator). ) When it is below, it is detected that the external power source S is energized, and when this predetermined value is exceeded, it is detected that the energization is cut off.

  When the anti-theft mode M1 is set, when the power cable connecting the device body 2 to the external power source S is disconnected from the power outlet or the power cable is disconnected, the power cutoff sensor 632 Then, a power cutoff between the external power source S and the device main body 2 is detected, and an alarm sounds from the speaker 633. As a result, simply connecting the device main body 2 to the external power source S by a power cable or the like, the power cable plays a key role, and an alarm is output when the power cable is disconnected or disconnected from the external power source S. Therefore, the device body 2 can be reliably prevented from being stolen.

  Furthermore, even if the device main body 2 is stolen, as described above, unless the management password 100 is known, the operation main body 2 that is sold separately cannot be obtained and the device main body 2 cannot be operated. The effect can be further improved and enhanced.

By the way, since the operation panel 7 is detachable from the apparatus main body 2, it is easily lost during taking out. When the operation panel 7 is lost, the location of the operation panel 7 can be confirmed by the search button 534 as necessary.
Specifically, when the operation panel 7 is not accommodated in the panel mounting unit 53 and is empty, the operator presses the search button 534 to the operation panel 7 via the search signal transmission unit 673 and the infrared unit 64. A search signal SC is transmitted. When the operation panel 7 receives the search signal SC, the operation panel 7 is excited by the vibration means 85, and an electronic sound is output from the speaker 86. Please put on "and the backlight on the LCD will flash.
In this way, the operation panel 7 can be easily found by following the light, vibration, and electronic sound generation sources generated from the operation panel 7 as an alarm, so that the loss of the operation panel 7 can be effectively prevented.
When the anti-theft mode M1 is set, the search signal SC is not transmitted to the operation panel 7 even if the search button 534 is pressed. Therefore, it is possible to prevent the operation panel 7 stored in a location different from the device main body 2 from being discovered by operating the search button 534 and being stolen together with the device main body 2.
Further, only the operation panel 7 having the operation panel ID 99 set in advance on the device main body 2 side may respond to the search signal SC.

Here, when the operation panel 7 is detached from the device main body 2 and the device main body 2 is remotely operated, the remote operation mode M2 can be set to effectively cope with the loss of the operation panel 7.
When the mode switch button 721 is pressed so as to switch between the anti-theft mode M1 and the remote operation mode M2, the operation signal OP is transmitted from the operation panel 7, and the password input receiving unit 665 prompts the operator to input the management password 100. Prompted. When a password is input on the operation panel 7 in response to this, the input password PW is verified with the management password 100 stored in the database 651 by the password determination unit 666, and when this password verification (authentication) is successful. When the antitheft mode M1 / remote operation mode M2 is switched to each other and authentication fails, the mode M1 / M2 is not switched.
As described above, since switching to the anti-theft mode M1 / remote operation mode M2 requires the input / authentication of the management password 100, unauthorized mode switching by an outsider without operation authority can be prevented. As a result, it is possible to prevent the anti-theft mode M1 from being released by an outsider, thereby contributing to an improvement in the anti-theft effect.

When the remote operation mode M2 is set by the mode switching operation described above, the operation panel 7 is lost when the operation panel 7 is removed from the device body 2 and a predetermined time elapses without the operation button 72 being operated. To be judged. This predetermined time can be arbitrarily set. The timer 671 is used to measure the time during which the operation panel 7 is not operated, that is, the no-operation time. The timer 671 measures a time interval when a signal is received from the operation panel 7.
Then, when the non-operation time of the operation panel 7 has elapsed for a predetermined time, the search for the operation panel 7 is performed in substantially the same manner as when the search button 534 is pressed. Thus, since the location of the operation panel 7 is notified by the alarm output from the operation panel 7, the operation panel 7 in a lost state can be easily found.
Note that the mounting state of the operation panel 7 is detected by the panel state determination unit 672 via the first signal transmission / reception unit 641 and the second signal transmission / reception unit 642 as described above. When it is stored in 53, measurement by the timer 671 is not performed.

When the panel state determination unit 672 determines that the operation panel 7 has been removed from the device main body 2, the device main body 2 will beep according to the currently set mode, and “currently stolen. The prevention mode (or remote operation mode) is set ”message is displayed on the liquid crystal display 71. In response to this message, the display of the message is erased by pressing the operation button 72 and responding “OK”.
That is, it is possible to select either the anti-theft mode M1 or the remote operation mode M2 depending on the situation by determining whether the operation panel 7 is attached to the device body 2 or removed from the device body 2. And is very convenient.

In the anti-theft mode M1 / remote operation mode M2 as described above, any one mode can always be selectively set by the mode switching button 721, and the trouble of setting each mode M1 / M2 individually is reduced. It does not take.
When the anti-theft mode M1 and the remote operation mode M2 are set at the same time, when the operation panel 7 and the device main body 2 are stored separately to prevent theft, the operation panel 7 that has been removed is removed. The above alarm is output by no operation, and the location of the operation panel 7 stored separately from the device body 2 may be revealed. However, when the antitheft mode M1 is set, the remote operation is performed. The mode M2 is not set, and a reasonable design without inconvenience can be achieved.
On the other hand, when the remote operation mode M2 is set, the anti-theft mode M1 is not set. Therefore, when the projector 1 is used up and the power cable is unplugged and cleared, an alarm is unexpectedly generated. There is no output and excellent operability.

The present invention is not limited to the above-described embodiment, and includes modifications as described below.
The configurations of the operation panel and the device main body of the present invention are not limited to those exemplified in the above embodiment.
For example, a plurality of operation panels may correspond to one device body, and a plurality of operation panel IDs may be stored in the storage unit. In this way, the device main body can be operated simultaneously by a plurality of operation panels.

Further, the operation panel ID may be stored (registered), deleted, or changed in the storage unit arbitrarily under the condition of password input / verification (authentication). If the operation panel ID is deleted from the storage means, it will be in an unregistered state, and if this operation panel ID is stored again in the storage means, it will be in a registered state.
Here, if the operation panel ID can be additionally registered, the operation panel ID can be registered later and the operation panel can be used even if the operation panel ID is not stored in the device main body in the manufacturing stage in advance. In addition, if the operation panel ID can be deleted, when the operation panel is lost or stolen, the operation panel ID is not allowed to be operated by the operation panel by deleting the operation panel ID of the operation panel. Unauthorized use or theft of the main unit can be suppressed.

In the above-described embodiment, the operation panel ID 99 is included in the operation signal OP, and the operation panel ID 99 is verified each time an operation signal is transmitted from the operation panel 7 to the device main body 2. It is also conceivable to simplify the transmission process by performing only when the power of the device body is turned on or when communication between the device body and the operation panel is started.
Furthermore, the operation to be restricted by the control means is limited, and the operation panel ID collation determination may not be performed for some operations by the operation panel. Alternatively, it is also conceivable to set a mode for accepting operations from all operation panels without performing the operation panel ID collation determination.

The operation panel is provided with operation means such as operation buttons and switches in accordance with the functions of the electronic device. It is also possible to invalidate operation means for functions that are removed from the device body and are not used during remote operation.
Here, on the device main body side, operation buttons functionally overlapping with the operation buttons provided on the operation panel side may be provided, but such operation buttons are not provided on the device main body side. However, the anti-theft effect by removing the operation panel can be enhanced.
An arithmetic device can also be mounted on the operation panel. In this case, it is conceivable to measure the transmission interval of the operation signal with this arithmetic unit and determine the loss of the operation panel using this transmission interval as the no-operation time. It is also conceivable that processing equivalent to the processing of the state determination unit is performed on the operation panel side.

Furthermore, various modes can be adopted as signals such as sound, light, vibration, etc. that are issued by the operation panel. For example, the location of the operation panel may be indicated by flash radiation.
Here, such a signal may be called from the apparatus main body. If you indicate that the operation panel has been lost due to the display on the device main body or the occurrence of light, sound, vibration from the device main body, etc., even if communication between the operation panel and the device main body becomes impossible, Can recognize lost.

  In order to determine whether the operation panel is mounted or removed, it is not necessary to use infrared rays as in the above-described embodiment. For example, in the embodiment, the mounting state of the operation panel can be determined by detecting the conductive state between the electrode on the operation panel 7 side and the connector 532 on the device body 2 side. Alternatively, the operation panel mounting state may be determined by wired communication such as USB connection, or the operation panel mounting state may be mechanically determined via a spring or the like provided between the operation panel and the device body. Also good.

Further, an interface such as an operation button for inputting a password can be provided on both the apparatus main body side and the operation panel side. It is also possible to mount an arithmetic device on the operation panel and perform a process equivalent to the process of the password input reception unit on the operation panel side.
Furthermore, the password can be input as appropriate. For example, the password may be prompted when the power of the device main body is turned on. In this way, since the password input is always required when using the electronic device, theft can be suppressed even if the device main body and the operation panel are stored in the same place.
In addition, a plurality of passwords can be introduced, and the passwords can be properly used for each user or operation, so that the operation authority can be managed more finely and appropriately.

The electronic device may be provided with an arbitrary mode in addition to the remote operation mode and the anti-theft mode. Each of these modes can be set / cancelled individually by the mode setting unit, or can be set mutually exclusive.
Here, an interface such as an operation button for setting, canceling, or selecting each mode can be provided on both the apparatus main body side and the operation panel side.

  The present invention can be used for various electronic devices having operation interfaces such as an operation panel and a remote controller.

1 is a perspective view illustrating a projector according to an embodiment of the invention. The schematic diagram showing the optical system in the said embodiment. The block diagram showing the structure of the electric system in the said embodiment. The block diagram showing the structure of the control board in the said embodiment. The block diagram showing the internal structure of the operation panel in the said embodiment. The flowchart explaining the operation restriction | limiting of the operation panel in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Projector, 2 ... Apparatus main body, 7 ... Operation panel, 53 ... Panel mounting part, 65 ... Memory | storage device (storage means), 66 ... Control board (control means), 71 ... Liquid crystal display part (signal calling part), 81 ... Infrared unit (signal receiving unit), 85 ... Vibrating means (signal calling unit), 86 ... Speaker (signal calling unit), 100 ... Management password (password), 534 ... Search button (signal transmission operation unit) 632 ... Power cutoff sensor, 633 ... Speaker, 641 ... First signal transmission / reception unit (signal reception unit and signal transmission unit), 642 ... Second signal transmission / reception unit (signal reception unit and signal transmission unit), 664 ... Verification determination unit , 665... Password input acceptance unit, 666... Password determination unit, 667... Processing restriction unit, 669... Mode setting unit, 671... Timer, 672 ... panel state determination unit (state determination unit), 673 Search signal transmission unit, 99 ... operation panel ID, M1 ... antitheft mode, M2 ... remote control mode, OP ... operation signal, SC ... search signal.

Claims (8)

An operation panel that is detachably provided on the device body, is communicable with the device body, and operates the device body in response to an operation signal transmitted to the device body;
Storage means for storing a unique operation panel ID of the operation panel corresponding to the device body;
Control means for controlling the device main body based on an operation signal from the operation panel;
The control means is stored in the operation panel, and a collation determining unit for collating the operation panel ID included in the operation signal and the operation panel ID stored in the storage means,
When it is determined that the operation panel ID included in the operation signal matches the operation panel ID stored in the storage means, the processing of the operation signal is started and it is determined that there is a mismatch. And a signal processing unit that prohibits processing of the operation signal. The electronic device according to claim 1,
The storage means stores a password for managing operation authority,
If the control determining unit determines that the operation panel ID included in the operation signal does not match the stored operation panel ID, the control means prompts the operator to input a password, and an input And a password determination unit for verifying the password stored and the password stored in the storage means,
The electronic device according to claim 1, wherein the signal processing unit starts processing the operation signal when it is determined that the password input by the password determination unit matches the password stored in the storage unit. The electronic device according to claim 1 or 2,
When the operation panel is detached from the device main body, the control means may be a remote operation mode for remotely operating the device main body, or that the power of the device main body is cut off while the operation panel is removed. An electronic device comprising a mode setting unit that sets an anti-theft mode that issues an alarm signal when detected. In the electronic device in any one of Claims 1-3,
The electronic device according to claim 1, wherein the control unit includes a state determination unit that determines whether the operation panel is attached to or removed from the device main body. The electronic device according to claim 4,
The device main body includes a panel mounting portion for mounting the operation panel, and a plurality of signal receiving portions that are provided on the panel mounting portion and the outer peripheral portion of the device main body and receive an operation signal from the operation panel,
The state determining unit determines that the operation panel is mounted when the operation signal is received only by the signal receiving unit of the panel mounting unit, and the signal receiving unit of the panel mounting unit and other signal receiving units When receiving the operation signal, the electronic apparatus determines that the operation panel is removed. The electronic device according to any one of claims 1 to 5,
The device body includes a signal transmission unit that transmits a signal to the operation panel.
The control means includes a search signal transmission unit that transmits a search signal from the signal transmission unit to the operation panel,
The operation panel includes a signal receiving unit that receives a search signal from the search signal transmitting unit, and a signal generation unit that issues at least one of sound, light, and vibration when the signal receiving unit receives the search signal. An electronic device comprising a call unit. The electronic device according to claim 6,
The device body is provided with a signal transmission operation unit for transmitting a search signal from the search signal transmission unit,
The signal transmission operation unit is provided in a panel mounting unit of the device main body to which the operation panel is mounted. In the electronic device in any one of Claims 1-7,
An electronic apparatus characterized by being a projector that modulates a light beam emitted from a light source in accordance with image information to form an optical image and projects it in an enlarged manner.

Images