JP2003345500A - Electronic apparatus with detachable display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide user-friendly operability even when attaching or detaching a display unit, which has display and operation functions, to an electronic apparatus body. <P>SOLUTION: A detachable display unit 15 is used for operating a facsimile machine. When the display unit 15 is attached to a facsimile body 16, part of an operation key 12 is covered by the display unit 15, thereby the functions are invalidated or limited. When the display unit 15 is detached, not only the remote operation by the display unit 15 is enabled, but also the operation is enabled even from the operation key 12 of the facsimile body 16 side. The operation in attaching the display unit 15 can be selected from either one of the following: (1) a key function on the facsimile body 16 is valid; (2) an operating means on the display unit 15 is valid; (3) both operating means are valid. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display unit detachable electronic device such as a communication device or an information processing device having a detachable display unit that can be used for operation as a touch panel or the like.

[0002]

2. Description of the Related Art Conventionally, a technology for detaching an operation panel and remotely controlling a main body by wire or wirelessly has been commercialized for electronic devices such as facsimile machines, telephones, and copiers. For example, Japanese Patent Application Laid-Open No. Hei 5-173735 discloses a prior art relating to a printer in which an operation panel having display and operation functions is detachable and can be fixed to the main body or can be removed from the main body and installed. Have been. In this prior art publication, it is described as an object of the invention that the exchange of data and the like is performed by a wireless method so that the installation range of the operation panel can be further expanded.

[0003]

SUMMARY OF THE INVENTION The above-mentioned JP-A-5-17
In the prior art as disclosed in Japanese Patent No. 3735,
When the operation panel is detached from the main body and used, there is a disadvantage that the operation panel cannot be directly operated.

SUMMARY OF THE INVENTION An object of the present invention is to solve this drawback, and it is an object of the present invention to provide an electronic device having a display unit, such as an operation panel, having display and operation functions. It is an object of the present invention to provide a display unit detachable electronic device capable of having easy-to-use operability even when the electronic device is detached from the main body.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a display unit detachable electronic device having a display unit detachable from a main body of the electronic device, wherein the display unit comprises a display means for displaying information, and an operation input device. Communication unit for performing information communication between the display unit and the main body of the electronic device; and a main unit of the main body of the electronic device. At least a part of the functions and at least a part of the functions of the unit operating means are set differently between a state in which the display unit is removed and a state in which the display unit is mounted. A display unit detachable type electronic apparatus including a switching unit for switching.

According to the present invention, a display unit detachable electronic device includes a display unit detachable from an electronic device main body, and includes communication means and switching means. The display unit has a display unit for displaying information and a unit operation unit for operation input. The main body of the electronic device has main body operation means for inputting operation. Since the communication means performs information communication between the display unit and the main body of the electronic device, even while the display unit is detached from the main body of the electronic device, the operation input to the unit operation means of the display unit can be performed by the main body of the electronic device. To operate the electronic device. The switching means changes at least a part of the function of the main body operation means and at least a part of the function of the unit operation means between when the display unit is detached and when the display unit is mounted, Since each is switched to a preset state, by setting an easy-to-use state,
The function can be switched to an easy-to-use state according to the attachment / detachment of the display unit.

In the present invention, at least a part of the unit operation means is a touch panel which operates in cooperation with the display means.

According to the present invention, since the operation input can be performed by the touch panel in the display unit, the operation and input of the electronic device can be performed by effectively using the display means of the display unit.

Further, in the present invention, at least a part of the main body operation means is provided at a position hidden by the display unit while the display unit is mounted on the main body of the electronic device, and is hidden by the display unit. The position is further provided with display means on the main body side of the electronic device.

According to the present invention, while the display unit is removed from the main body of the electronic device, at least a part of the main body operation means hidden by the display unit when the electronic device is mounted, and
The display means on the main body side can be used. The number of functions that can be operated and input can be increased as the main body operation means, and the display means can be used. Therefore, it is possible to easily operate and input only the main body of the electronic device while the display unit is removed. .

Further, in the present invention, the switching means has a function of the main body operation means effective while the display unit is detached from the main body of the electronic device, and the display unit is mounted on the main body of the electronic device. During the operation, the switch is invalidated.

According to the present invention, while the display unit is mounted on the main body of the electronic apparatus, the main body operation means is switched to invalid, so that the user of the electronic apparatus can operate the unit operation means while watching the display means of the display unit. Operation input can be performed, and operability that is easy for the user to understand can be provided.

Further, in the present invention, the switching means has a function of the main body operation means which is invalid while the display unit is mounted on the main body of the electronic device, and the display unit is detached from the main body of the electronic device. It is characterized in that it is effectively switched during the operation.

According to the present invention, when the display unit is detached from the main body of the electronic device, the function of the main body operation means, which is invalid while the display unit is mounted, is switched to be valid. If the user is in the vicinity of the main body of the electronic device, an operation input can be made to the main body operation means, and the electronic device can be easily used.

Further, in the present invention, the switching means performs the function of the main body operation means while the display unit is detached from the main body of the electronic device, and the display unit is mounted on the main body of the electronic device. During the interval, the function is switched to the function of the unit operation means.

According to the present invention, the function of the main body operating means provided while the display unit is detached from the main body of the electronic device can be operated while the display unit is mounted on the main body of the electronic device. Since the function is switched to the function of the means, the user of the electronic apparatus can easily operate while viewing the display means while wearing the display unit.

In the present invention, the switching means performs the function of the unit operation means while the display unit is mounted on the main body of the electronic device, and the display unit is detached from the main body of the electronic device. During this time, the function is switched to the function of the main body operation means.

According to the present invention, while the display unit is detached from the electronic device, the function of the unit operating means is switched to the function of the main body operating means while the display unit is mounted. The same operation input as operating the unit operation means of the display unit by directly operating the main body operation means can be performed on the electronic device.

Further, in the present invention, the switching means restricts the function of the main body operation means while the display unit is mounted on the main body of the electronic device.

According to the present invention, when the display unit is mounted on the main body of the electronic apparatus, the main body operating means can be used together with the unit operating means. However, while the display unit is mounted on the main body of the electronic device, the function of the main body operation unit is limited, so that the user of the electronic device only has to perform an operation input to the unit operation input unit of the display unit. Even if an operation input is made to the main body operation means by mistake, the functions are limited, so that an erroneous operation can be prevented.

Further, according to the present invention, when the function of the main body operation means is restricted by the switching by the switching means, the information processing apparatus further comprises an informing means for informing that the function is restricted.

According to the present invention, the user of the electronic device can be notified that the function of the main body operation means is restricted by the notification means, and the restricted function is not used. Can be.

Further, in the present invention, while the display unit is mounted on the main body of the electronic apparatus, the switching means performs switching for enabling the function of the main body operation means, or switches the function of the unit operation means. It is characterized by further including a selection means for selecting whether to perform the switching to enable.

According to the present invention, when the user of the electronic device mounts the display unit on the main body of the electronic device by the selection device, the function of the main body operation device is enabled or the function of the unit operation device is enabled. Can be selected, so that it can be selected so as to be easy for the user to use.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Although the present invention can be applied to electronic equipment including all communication devices and information processing devices to which a display unit can be attached and detached, a facsimile device will be specifically described here. .

FIG. 1 shows a schematic electrical configuration of a facsimile apparatus according to an embodiment of the present invention. The facsimile apparatus of the present embodiment includes an image reading device 1, a printing device 2, an image storage device 3, a storage device 4, a cordless control circuit 5, a handset 6, a control device 8 including a key control unit 7, a modem 9, and Including a network controller 10 and a telephone network 11
And the network controller 10. Network control device 10
Monitors the status of the telephone line network 11 and switches the line between the modem 9 side, the handset 6 side, and the cordless control circuit 5 side. The modem 9 modulates the digital image signal into an analog signal suitable for the telephone line 11, and demodulates the analog signal on the telephone line 11 into a digital signal for printing.

The printing apparatus 2 is a unit that prints a received or read image, and a thermal method, an electrophotographic method, an inkjet method, or the like is often used for printing. The image reading apparatus 1 is an apparatus for reading a document for transmission and copying, and uses a reduced reading method using a combination of a lens and a CCD line sensor, a contact sensor method using a rod lens array, and the like.

The image storage device 3 is a unit for storing a read image and a received image. By providing this unit, many complicated functions such as transfer of received images, broadcasting, and running out of print paper are provided. In this case, proxy reception, memory transmission, and the like can be performed.

The facsimile apparatus shown in FIG. 1 further includes an operation key 12, a dial key 13, a display interface unit 14, and a display unit 15. The control device 8
Combined with the program stored in the storage device 4,
The operation of the entire device is determined based on information input from the operation keys 12 and the dial keys 13, information indicating a state from each unit of the device, and information such as a signal from the telephone network 11, and a command is issued to the entire device. Then, a display instruction is issued to the display device interface unit 14. In addition, the information of the image,
Responsible for compression for shortening transmission time and decompression for returning a compressed image signal to original pixel string information.

The display unit 15 is detachable from the facsimile main body 16 including other components, and the display unit interface 14 of the facsimile main body 16 is provided.
Information can be transmitted by wire or wirelessly. Further, since the display unit 15 includes the touch panel and operation keys having functions equivalent to a part of the operation keys 12, the operation on the screen can be performed even when the display unit 15 is detached from the facsimile main body 16.

The operation keys 12 and the dial keys 13
This is a unit for the user of the facsimile apparatus to input information and instructions to the facsimile apparatus. Display unit 1
Reference numeral 5 denotes a unit for the facsimile apparatus to display information to the user and to give guidance on operation and input. Various parameters of the facsimile apparatus can be set by using the display unit 15 and the dial keys 13.

Further, the received image and the image read by the image reading device 1 are displayed on the display unit 15.
The user sees this image and can instruct the subsequent processing method. Thus, the display unit 15 is the most important device because it is possible to prevent unnecessary printing or to improve user friendliness such as instructing transmission according to the content.

The handset 6 is provided with a handset for telephone communication and a handset. The facsimile apparatus of the present embodiment can be connected to one or a plurality of cordless handsets. The cordless control circuit 5 is a device that controls communication with the cordless slave unit, and includes a tuner for searching for a communication path for connection with the slave unit, establishing a connection, talking, transmitting radio waves, receiving, and the like. In. The antenna 106 is
Transmission and reception of radio waves for transmission and reception with the slave unit are performed.

The display unit 15 is connected to the facsimile main body 16.
The antenna 107 provided on the display device interface unit 14 of the facsimile main body 16 during the removal from the
And the antenna 108 of the display unit 15 can be used as communication means to perform wireless information communication. While the display unit 15 is mounted on the facsimile main body 16, the connector 109 provided on the display device interface unit 14 of the facsimile main body 16 and the connector 110 provided on the display unit 15 are joined,
Information communication is performed. While the display unit 15 is being detached from the facsimile body 16, the connectors 109 and 1
A transmission cable can be connected between the terminals 10 to perform wired information communication. Between the display unit 15 and the facsimile main body 16, at least one of such a wired communication means or a wireless communication means as described above may be provided.

In this embodiment, a sensor is provided on the connector 109, and if the connectors 109 and 110 are joined, it is determined that the display unit 15 is mounted on the facsimile main body 16. When a wired communication means is used, the connection between the connectors 109 and 110 via the transmission cable does not directly join the connectors 109 and 110, so that the sensor detects that the display unit 15 has been removed. Can be. Connector 109,
The state of signal connection between 110, for example, some signal lines are connected when the connectors 109 and 110 are directly joined, and are not connected when connected via a transmission cable, and it is determined whether or not the display unit 15 is attached. You can also.

FIG. 2 shows the overall appearance of the facsimile apparatus of this embodiment. In the facsimile apparatus of the present embodiment, some of the functions of the operation keys 12 of the facsimile main body 16 are also provided on a touch panel 17 that uses the functions of the display device of the display unit 15. Display unit 15
Is detachable from the facsimile main body 16. Since the display unit 15 can be carried freely by the user, the user can freely operate the facsimile apparatus 16 anywhere even if the operation at the installation location of the facsimile main body 16 is restricted. Operability is greatly improved. Note that the display unit 15 of the present embodiment is substantially plate-shaped, and can be attached to and detached from the facsimile main body 16, and, while being attached to the facsimile main body 16, stands up as shown in the drawing, The posture can be switched to a posture to be stored in a recess provided on the surface of the facsimile main body 16. Note that the image reading device 1 is realized by a detachable hand scanner, and it is also possible to manually read a document by removing it from the facsimile main body 16.

FIG. 3A shows the display unit 15 of FIG.
The external configuration of the facsimile main body 16 in a state where it is removed is shown in a perspective view, and the external configuration of the display unit 15 is shown in a front view in FIG. As shown in FIG. 3A, the display unit 15
When the facsimile body 16 of the present embodiment is removed,
A part of the operation key 12 hidden behind it appears on the front, and while the display unit 15 is being removed, the facsimile body 1
It is possible to perform an operation such as facsimile transmission with the operation keys 12 on the sixth side. The operation keys 12 include a display unit 12a such as a liquid crystal display (LCD) or electroluminescence (EL), and an operation unit 12b such as a key switch. In the present embodiment, the display unit 12a performs only display.

As shown in FIG. 3B, the display unit 1
5, a touch panel 17 is realized by using a display device 18 such as a liquid crystal display device (LCD) or electroluminescence (EL), and an operation device 19 for operation input is provided. The operation input to the touch panel 17 is performed by the user touching a specific section displayed on the display device 18 with a fingertip or the like. The display screen of the display device 18 is larger than the display screen of the display unit 12a, and can provide a display that is easy for the user to see. Instead of providing the display device 18 with a function as the touch panel 17,
A soft key is provided on the operation device 19 to display a submenu on the screen of the display device 18, or a pointing device is provided to move a cursor on the screen of the display device 18 to perform an operation input. You can also.

FIG. 4 shows a facsimile apparatus having a detachable display unit according to the present embodiment. When the display unit 15 is mounted on the facsimile main body 16, key operations on the operation keys 12 and the dial keys 13 on the facsimile main body 16 are performed. A schematic operation procedure for disabling and enabling when dismounting is shown. In step a1, the user of the facsimile apparatus inputs a key on the facsimile main body 16 side.
In step a2, the key control unit 7 checks the sensor of the connector 109.

At step a2, when the key control unit 7 confirms that the display unit 15 is mounted, at step a3, it is determined whether or not all key operations on the facsimile main body 16 are set to be invalid. Judge. Step a
If it is determined in step 3 that all keys are disabled, it is determined in step a4 that key input is disabled. In step a5, the key control unit 7 performs processing while executing no function for key input. Has been terminated. At this point, the user is informed that the key operation of the main unit is invalid by a display on the display device 18 of the display unit 15 or a sound (a beep sound or a sound such as “Please use the touch panel operation”). Since the function of performing the control to perform the operation is also supported, it is possible to prevent the user from performing an erroneous operation and preventing the user from performing the operation without being able to perform the operation. Even if it is determined in step a3 that all keys are not disabled, if it is determined in step a6 that the input key is a key that is set to be prohibited to restrict functions, the operation in step a5 is performed. .

If it is determined in step a2 that the display unit 15 has been removed, or if it is determined in step a6 that the input key has not been set to the prohibited key, then in step a7, The key control unit 7
It is determined that the operation of the body key is valid. Step a8
Here, the key control unit 7 executes a function corresponding to a key input through the control device 8.

FIG. 5 shows another embodiment of the present invention.
2 shows a schematic operation procedure when the display unit 15 of FIG. 1 is detached from the facsimile main body 16. In step b1, the display unit 15 is removed from the facsimile main body 16. In step b2, the connector 109 of the facsimile main body 16 detects a change in state. Step b
At 3, the control mode in the key control unit 7 is switched in response to the detection result of step b2. In step b4, as a result of step b3, operation functions such as facsimile transmission and copy using the operation keys 12 of the facsimile main body 16 are enabled.

On the other hand, in step b5, the display unit 15
Side connector 110 has detected a change in state. In step b6, the control mode in the display unit 15 is switched in response to the detection result in step b5. Step b
In step 7, as a result of step b6, the operation functions of the display unit 15 are limited to the display and functions in a state where the display unit 15 is detached from the facsimile main body 16.

FIG. 6 shows a still further embodiment of the present invention, in which the display unit 15 of FIG.
1 shows a schematic operation procedure when the camera is mounted on a camera. Step c
In 1, the display unit 15 is mounted on the facsimile main body 16. In step c2, the connector 109 of the facsimile main body 16 has detected a change in state. In step c3, the control mode in the key control unit 7 is switched in response to the detection result in step c2. In step c4, as a result of the switching in step c3, operation functions such as facsimile transmission and copy with the operation keys 12 of the facsimile main body 16 are invalidated.

On the other hand, in step c5, the display unit 15
Side connector 110 has detected a change in state. At step c6, the control mode in the display unit 15 is switched in response to the detection result at step c5. In step c7, as a result of step c6, functions such as facsimile transmission and copying can be executed by operation on the display unit 15.

FIG. 7 shows a schematic operation procedure when a copy operation is performed by the facsimile apparatus of FIG. 1 as still another embodiment of the present invention. At step d1, a document is inserted into the facsimile machine. In step d2,
Recording paper is set in the facsimile machine. Step d
At 3, it is checked whether or not the display unit 15 has been removed from the facsimile main body 16. Step d
In 4, the copy key included in the operation key 12 of the facsimile main body 16 is depressed because the function of the operation key 12 of the facsimile main body 16 is effective while the display unit 15 is removed. In step d5, the copy operation is started in response to the operation in step d4.

When it is determined in step d3 that the display unit 15 is mounted on the facsimile main body 16, the operation keys of the facsimile main body 16 are invalidated. Step d
In 6, the copy key of the operation key 12 arranged on the back side of the display unit 15 is pressed while the display unit 15 is mounted. As shown in FIG. 2, if the display unit 15 is set upright, the operation keys 12 can be operated even when the display unit 15 is mounted on the facsimile main body 16. However, in step d7,
At this time, since the operation of the operation keys 12 of the facsimile main body 16 is invalid, the copy is not executed.

In step d8, the copy key displayed on the touch panel 17 of the display unit 15 is pressed while the display unit 15 is mounted. In step d9, copying is started in response to the operation in step d8.

In the "setting" mode displayed in FIG. 3B, while the display unit 15 is mounted, the key function on the facsimile main body 16 is enabled, the operation means on the display unit 15 is enabled, It is possible to select whether to enable or disable both operation means.

The key operation on the facsimile main body 16 is performed for each key type or for each use type (telephone priority, Internet priority, etc.), such as enabling only the dial key 13 of the facsimile main body 16 used for making a telephone call. The validity / invalidity of the means and the operation means on the display unit 16 can be set.

As described above, in the present invention,
Instead of removing the entire operation panel having the operation and display functions, the display unit 15 having a part of the functions of the operation panel left on the facsimile main body 16 is made detachable. Thus, even when the display unit 15 is detached, the facsimile main body 16 can be directly operated. In addition, by disposing the operation keys 12 of the facsimile main body 16 at a position where it is difficult to press when the display unit 15 is mounted, and further disabling operation input to the operation keys 12, even when the display unit 15 is mounted, Easy-to-use operability can be provided even when detached.

That is, in the present invention, even when the display unit 15 is detached from the facsimile main body 16, the facsimile main body 16 can be operated without difficulty by the keys of the facsimile main body 16. The display unit 16
When the is mounted on the facsimile main body 16, the input operation can be integrated into the operation of the facsimile main body 16 on the touch panel 17 accompanied by the guidance display of the display device 18, and the user can easily understand and use the operability. Will be able to do it.

The concept of the present invention is effective not only for facsimile machines but also for all electronic devices that require operation input, such as audio equipment, video equipment, home appliances, including communication equipment and information processing equipment. .

[0054]

As described above, according to the present invention, a display unit detachable type electronic device includes a display unit detachable from an electronic device main body, and performs information communication between the display unit and the main body of the electronic device. Therefore, even while the display unit is detached from the main body of the electronic device, it is possible to operate the electronic device from the unit operation means of the display unit. At least a part of the function of the main body operation means provided in the main body of the electronic device and at least a part of the function of the unit operation means are performed while the display unit is removed and the display unit is mounted. By differently setting an easy-to-use state in advance, an electronic device that is easy for the user to use can be realized.

Further, according to the present invention, it is possible to operate and input electronic devices by effectively using the display means on the touch panel.

Further, according to the present invention, at least a part of the main body operation means hidden by the display unit at the time of mounting and the display means on the main body side can be used, so that the display unit is removed. In this state, it is possible to make it easy to operate and input only with the main body of the electronic device.

Further, according to the present invention, when the display unit is mounted on the main body of the electronic device, the user of the electronic device only has to perform an operation input to the unit operating means while looking at the display means of the display unit. Easy-to-understand operability can be provided.

Further, according to the present invention, when the display unit is detached from the main body of the electronic device, the user of the electronic device can perform an operation input to the main body operation means,
It can be easy to use.

Further, according to the present invention, when the display unit is attached to the main body of the electronic device, the function of the main body operation means provided while the display unit is detached from the main body of the electronic device is provided. Since the function is switched, the user of the electronic device can easily operate the electronic device while looking at the display means.

Further, according to the present invention, while the display unit is detached from the electronic device, the function of the unit operating means while the display unit is mounted is switched to the function of the main body operating means. Can directly input an operation to the electronic device from the main body operation means.

Further, according to the present invention, while the display unit is mounted on the main body of the electronic device, the function of the main body operation means is restricted, so that the user of the electronic device erroneously inputs an operation input to the main body operation means. The function is limited even if the operation is performed, so that an erroneous operation can be prevented.

Further, according to the present invention, by notifying that the function of the main body operation means is restricted, it is possible to prevent the user of the electronic device from using the restricted function.

According to the present invention, when the display unit is mounted on the main body of the electronic equipment, the function of the main body operation means can be enabled or the function of the unit operation means can be easily used by the user of the electronic equipment. You can choose to enable.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic electrical configuration of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an external configuration of the facsimile apparatus of FIG.

FIG. 3 is a facsimile main body 1 of the facsimile apparatus of FIG.
6A and 6B are a perspective view showing an external configuration of a display unit 6 and a front view showing an external configuration of a display unit 15.

FIG. 4 is a flowchart showing a schematic operation procedure of the facsimile apparatus of FIG. 1;

FIG. 5 is a flowchart showing a schematic operation procedure of the facsimile machine of FIG. 1;

FIG. 6 is a flowchart showing a schematic operation procedure of the facsimile machine of FIG. 1;

FIG. 7 is a flowchart showing a schematic operation procedure of the facsimile apparatus of FIG. 1;

[Explanation of symbols]

1 Image reading device 2 Printing device 3 Image storage device 4 Storage device 7 Key control unit 8 Control device 12 Operation keys 12a Display section 12b Operation unit 13 Dial keys 14 Display device interface 15 Display unit 16 Facsimile body 17 Touch panel 18 Display device 19 Operating device 106, 107, 108 antenna 109,110 Connector

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 1/00 H05K 5/02 A 5K027 H05K 5/02 G06F 1/00 312F F-term (Reference) 2H027 DA27 GA03 GA05 GA20 GA36 4E360 AB04 AB05 AB12 AB16 AB20 EB02 EC05 EC12 ED03 ED27 GA46 GB24 GB48 5B068 AA05 AA22 AA32 BE15 5C062 AA02 AA05 AB20 AB23 AB25 AB46 AD05 BA00 5K011 AA09 HA06 KA12 5K027 BB02 FF00

Claims (10)

[Claims] 1. A display unit detachable electronic device having a display unit detachable from a main body of the electronic device, wherein the display unit has a display means for displaying information and a unit operation means for operation input. A main body of the electronic device having main body operation means for operation input; a communication means for performing information communication between the display unit and the main body of the electronic device; at least a part of functions of the main body operation means and unit operation Switching means for switching at least a part of functions of the means to a preset state so as to be different between when the display unit is detached and when the display unit is mounted. Characteristic display unit detachable electronic equipment. 2. The display unit detachable electronic device according to claim 1, wherein at least a part of said unit operation means is a touch panel which operates in cooperation with said display means. 3. At least a part of the main body operating means is provided in the main body of the electronic device at a position hidden by the display unit while the display unit is mounted, and at a position hidden by the display unit. 3. The detachable electronic device according to claim 1, further comprising a display unit provided on a main body side of the electronic device. 4. The switching means performs a function of the main body operation means which is effective while the display unit is detached from the main body of the electronic device, while the switching unit operates while the display unit is mounted on the main body of the electronic device. 4. The display unit detachable electronic device according to claim 1, wherein the electronic device is switched to invalid. 5. The switching means performs a function of the main body operation means which is ineffective while the display unit is mounted on the main body of the electronic device, while the switching unit operates while the display unit is detached from the main body of the electronic device. The display unit detachable electronic device according to any one of claims 1 to 3, wherein the electronic device is effectively switched. 6. The switching means controls the function of the main body operating means while the display unit is detached from the main body of the electronic device, and controls the function of the main body operating means while the display unit is mounted on the main body of the electronic device. The display unit detachable electronic device according to claim 1, wherein the function is switched to a function of a unit operation unit. 7. The switching means performs the function of the unit operating means while the display unit is mounted on the main body of the electronic device, and controls the function of the unit while the display unit is detached from the main body of the electronic device. 7. The display unit detachable electronic device according to claim 1, wherein the electronic device is switched to a function of a main body operation unit. 8. The electronic apparatus according to claim 1, wherein the switching unit restricts a function of the main body operation unit while the display unit is mounted on the main body of the electronic device. Display unit detachable electronic equipment. 9. The display unit attachment / detachment according to claim 8, further comprising a notifying means for notifying that the function of the main body operating means is limited when the function is restricted by the switching means. Type electronic equipment. 10. While the display unit is mounted on the main body of the electronic device, the switching means performs switching for enabling the function of the main body operating means, or enables the function of the unit operating means. 4. The display unit detachable electronic device according to claim 1, further comprising a selection unit for selecting whether to perform switching.