JPH09214821A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment for constructing a system for sufficiently keeping storage capacity for image information picked up by an image pickup part. SOLUTION: Concerning the electronic equipment for receiving the supply of power from external equipment and inputting the image information to this external equipment, this electronic equipment is provided with an image pickup part 60 and an output part 50 with which a connector is provided for outputting the image information from the image pickup part 60 and its one part is card- shaped, and the output part 50 is equipped with a storage part for storing the image information from the image pickup part 60 as mentioned above or an interface 21 for connecting the storage part for storing the image information from the image pickup part 60. Thus, the system for storing sufficient image information can be provided even without providing a large memory at the external equipment itself.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device, and more particularly to an electronic device having a card shape connectable to an external device.

[0002]

2. Description of the Related Art In recent years, computers have been steadily miniaturized, and palm-sized computers have appeared. However, since such a small computer has a limitation in the size of the recording medium as compared with the desktop computer,
It has a card slot into which a PC card (PCMCIA / JEIDA) can be directly inserted instead of a floppy disk drive or the like. Usually, a memory card, a FAX card, or the like can be inserted into this card slot, which is compatible with various applications. More recently, Japanese Unexamined Patent Publication No. 7-112147 discloses a card type image pickup device in which a camera head is provided at the tip of a card to capture an image. FIG. 8 shows the configuration.

As shown in FIG. 8, this card type image pickup device includes a signal processing section 100, a card connector 101 provided at one end of the signal processing section 100, and a support section provided at the other end of the signal processing section 100. 102 and a camera head 103 rotatably supported by the support portion 102.

This card type image pickup device includes a power source, a CPU,
The storage unit and the like have a configuration that depends on the computer to which they are connected, thus achieving downsizing and cost reduction.

[0005]

However, the above-mentioned small-sized computers, such as sub-notebook personal computers and palm-top personal computers, generally have a limit in the capacity of the storage unit to be mounted, and therefore, the card-type image pickup device should be connected. However, there was a problem that the number of recorded sheets was small. Also,
Since the program for operating the card-type image pickup device is also recorded in the personal computer, it is necessary to install the program again when the card-type image pickup device is operated on a computer other than a specific personal computer. Further, when there are few slots for inserting cards, it is necessary to insert and remove each card in order to operate a plurality of cards.

Under the circumstances, the object of the present invention is to:
In a system including an electronic device for receiving power supply from an external device and inputting image information to the external device, constructing a system that can sufficiently secure the storage capacity of the image information captured by the imaging unit It is in the place of providing possible electronic equipment.

Another object of the present invention is to provide an electronic device capable of constructing a system capable of utilizing a large number of electronic devices in a system including an electronic device having a card shape connectable to an external device. is there.

Still another object of the present invention is a system using an electronic device having a card shape connectable to an external device, which can be connected to any external device to enable its operation. An object of the present invention is to provide a video camera and a recording / reproducing device which expand the use of video equipment such as a video camera and a recording / reproducing device, reduce the complexity of the handling, and are advantageous in terms of the amount of transmitted information.

[0009]

Means for Solving the Problems Under such a purpose,
In the invention according to claim 1 or 2 of the present application, in an electronic device for receiving power supply from an external device and inputting image information to the external device, the imaging unit and the imaging unit A connector for outputting the image information of the image information, a part of which is provided with an output unit in the shape of a card, and the image capturing unit can store the image information from the image capturing unit or the image information from the image capturing unit. By providing an interface for connecting a storage unit capable of storing data, it is possible to obtain a system capable of recording sufficient image information even if the external device itself does not have a large capacity memory. became.

Further, according to the invention of claim 13 of the present application, in an electronic device which is supplied with power from an external device and a part of which is card-shaped, it has a card-shaped connecting portion. By providing an interface for connecting other electronic devices, even if many electronic devices cannot be connected to the external device itself, a system that can connect multiple electronic devices to the external device can be constructed without complicated work. it can.

Further, in the invention according to claim 17 or 18 of the present application, power is supplied from an external device,
And, in the electronic device whose part is a card shape,
An interface is provided for storing information from the external device and connecting a storage unit that stores a program for controlling the electronic device or a storage unit that stores a program for controlling the electronic device. As a result, a storage unit is provided that can be recognized as a storage device for the external device without causing the external device to separately recognize the control information about the electronic device, and has a large storage capacity centered on the external device. System can be easily constructed.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 shows the first embodiment of the present invention.
This will be described with reference to FIGS.

FIG. 2 shows a system including an image pickup apparatus and a computer according to an embodiment of the present invention. In FIG.
Reference numeral 1 is an image pickup unit including an optical system and a signal processing unit, 2 is a computer, 3 is a CPU system of the computer, 4 is an interface (I / F) for connecting the image pickup unit 1 to the computer 2, and 5 is a display of the computer 2. A system, 6 is a memory system of the computer 2, 7 is a rewritable operation program storage unit for controlling the computer 2, 8 is a power management system of the computer 2, 9 is a battery of the computer 2, 10 is power supply to the computer 2. It is an external power supply.

In FIG. 2, numbers 11 to 22 surrounded by broken lines are block diagrams showing details of the image pickup unit 1.

Reference numeral 11 denotes a lens unit including a zoom and focus lens, and an aperture, and 12 denotes a lens controller for driving the lens, which is a known automatic focusing device, automatic exposure device, or automatic image stabilization device. Including. Reference numeral 13 is a CCD as an image pickup device, 14 is an A / D converter, 15 is a timing generator (TG), 16 is a digital signal processing device (DSP), 17 is a FIFO memory, and 18 is a control unit, which is connected to the image pickup unit. Includes memory control. Reference numeral 19 is an external connection interface (camera I / F), 20 is a DC / DC converter for converting the power supply voltage supplied from the computer 2 into a voltage suitable for driving the CCD, 2
1 is a memory connection card interface, (card I
/ F) and 22 are zoom switches, the output of which is connected to the control unit 18, and lens control according to the switch 22 is possible.

Reference numeral 30 is an external storage memory card composed of a flash memory or the like.

This image pickup system comprises an image pickup unit 1 and a computer 2, and the image pickup unit 1 and the computer 2 are detachable. Specifically, the interface 4 has a PC card slot, while a part of the image pickup unit 1 has the same shape as the PC card, and the lens unit 11 part protrudes from the computer 2 in the coupled state. It is possible to take an image in the state. The image pickup unit 1 and the computer 2 can be separated by pressing an eject button (not shown) on the computer 2 side.

Next, a concrete structure of the image pickup unit 1 is shown in FIG.
Shown in The same components as those described in the above block diagram are designated by the same numbers.

The image pickup unit 1 is a card body (output section) 5
0 and an imaging head (imaging unit) 60. First, the card body will be described.

The terminal 51 of the PC card connector 56 is soldered to the terminal 51, and the A / D converter 14, the timing generator (TG) 15 and the digital signal processing device (D) are connected.
SP) 16, FIFO memory 17, control unit 18, DC / DC converter 20, card (I / F)
In the main board on which 21 and the flexible connector 57 are mounted, the DC / DC converter 20 has shield cases arranged from the front and back of the board in order to suppress noise generation.

Reference numeral 52 denotes a card frame to which the card connector 56 is connected and which holds the main board. The card frame 52 has a substantially frame structure and is provided on the opposite side to the side where the card I / F 21 and the connector 56 are arranged. A frame wall 52b on which a rotation support portion 52a is erected is integrally provided, and ribs 52e are provided on both sides of the frame wall 52b with respect to a frame portion 52c of the card frame. Also, the rotation support part 5
A communication portion 52 through which a flexible substrate 66, which will be described later, is inserted in 2a.
d is formed.

Reference numerals 53 and 54 sandwich the main board 51 and the card frame 52 from above and below to form the card frame 52.
On the other hand, a metal cover that is attached by adhesion or mechanical coupling also serves as a shield for noise and the like. The outer shape of the card portion is determined by the covers 53 and 54 and a part of the card frame 52 so that the card portion can be inserted into the card slot of the computer 2.

Reference numeral 55 denotes a card case fixed to the card frame 52 with screws or the like, and a relatively high component such as the DC / DC converter 20 is provided at a location corresponding to the card case 55 of the main board 51. Card (I /
F) 21 and the flexible connector 57 are arranged. Further, an opening 55a into which the memory card 30 is inserted is provided on the side surface of the card case 55. Memory card 3
0 is inserted from the opening 55 and connected to the card (I / F) 21. A shutter member (not shown) is provided in the opening 55a. When the memory card 30 is not inserted, the shutter member is closed and opened at the same time as the insertion. This prevents dust and the like from entering the device.

Next, the image pickup head 60 will be described.

A zoom lens 62 and a focus lens 63 are provided so as to be movable in the optical axis direction.
A diaphragm unit 64 is arranged between the zoom lens 62 and the focus lens 63.
The optical image pickup unit is provided with the CCD 13 on which the light flux that has passed through the focus lens 63 and the diaphragm unit 64 forms an image, and includes a zoom lens drive motor, a focus lens drive motor, an IG meter, and a lens controller 12. The zoom lens 62, the focus lens 63,
The lens unit 11 including the diaphragm unit 64 is driven according to the lens controller 12.

The optical image pickup unit 61 is attached to the reference numeral 65, which is elastically biased by a clamp portion (not shown) connected to the rotation support portion 52a of the card frame 52 and is rotatable with respect to the rotation support portion 52a. In the rotary plate configured as described above, a groove portion 65a is provided on the card frame 52 side for engaging a convex portion (not shown) provided on the rotary plate 65 side of the card frame 52, and the convex portion has a groove portion depending on the rotation. , And the imaging head 60 rotates as a result. In this embodiment, the optical axis passes from the horizontal state to the upper side and is rotated by 180 ° so as to be in the horizontal state.

Reference numeral 66 denotes a flexible board which sends the output of the CCD 13 to the main board 51 on the main body side, and also sends drive commands for the lens and diaphragm from the main body side to the imaging head side. The flexible board 66 rotates the card frame 52 protruding toward the imaging head 60 side. It passes through the communication part 52d of the support part 52a, and its tip is the main substrate 5
1 is connected to the flexible connector 57.

Reference numeral 67 denotes an imaging case, which is an exterior of the imaging head 60, has an opening 67a provided at a position corresponding to the optical axis, and has a zoom switch 22 and a focus switch 23 on a surface perpendicular to the rotation axis. It is provided.
The state of this switch is transmitted to the main body side via the flexible board 66.

When changing the two angles to be imaged, the zoom switch 22 is operated to set the desired both angles.

If the distance from the lower surface of the card body to the center of rotation is R so that the center of rotation of the image pickup head 60 does not project below the card body when the image pickup head 60 rotates, the opening 67a of the image pickup head 60 is formed. The shape on the opposite side is dimensioned so that the distance from the center of rotation does not exceed R.

FIG. 3 is a schematic sectional view showing the state where the image pickup unit 1 is inserted in the computer 2. In the computer 2, a slot portion 40 surrounded by a broken line is a slot for inserting a PC card, for example, a TYPE II PC.
Two cards or one TYPE III PC card can be inserted. In the imaging unit 1,
20 is a DCDC converter, 21 is a card connector, 3
Reference numeral 0 is a memory card, 51 is a main substrate, 52 is a side wall of a card frame, 53 and 54 are covers, 55 is a card case, 56 is a PC card connector, 61 is an optical image pickup unit, and 67 is an image pickup case. The outer shape of the card formed by the covers 53 and 54 corresponds to the shape of TYPE II, and the memory card 30 is inserted into the card connector 21 along the longitudinal direction of the main board 51 and parallel to the slot portion 40. I'm in the club.

In the above structure, the image pickup unit 1 having the memory card 30 storing the program for driving the image pickup apparatus (camera utility program) is inserted into the card slot of the computer 2, and the computer 2 starts the camera utility program. Then, the image pickup unit 1 is supplied with power. The subject image is formed on the CCD 13 through the lens unit 11. The timing pulse sent by the TG15 causes C
Imaging data is obtained by the CD 13 and the A / D converter 14 and converted into digital data. The control unit 18 controls the interval between the timing pulses transmitted by the TG 15. Digital data is DSP
After being digitally processed by 16, the data is primarily stored in the FIFO memory 17, the data is sent out to the computer 2 in the order stored through the camera interface 19. On the computer side, the transmitted image is displayed on the display system 5.

In addition, focusing control and exposure control are performed by the control unit 18 based on the imaged signal.

When recording an image, for example, by pressing a mouse button or a space key, the still image information at the moment of pressing the button or the moving image information memory card 30 for a predetermined time from the moment of pressing the button is recorded. The camera utility program can select whether the recording location is the memory card 30 or the memory system 6 of the computer 2.

The computer 2 has a memory card 3
0 is recognized as a drive, so memory card 30
It is also possible to store information other than the information regarding the card type image pickup device.

As described above, in this embodiment, since the memory card can be connected to the card type image pickup device, the camera utility program is stored in the memory card and the card type image pickup device can be operated by any personal computer. You can record images without worrying about the storage capacity of the main body.

Further, since the memory card can be inserted in parallel to the card portion of the device, the device can be made thin.

In this embodiment, the optical image pickup unit has been described as zooming, autofocusing, and automatic exposure. However, in order to reduce power consumption, it is possible to adopt a structure such as single focus, manual focus, or manual aperture. . At this time, the lens controller is not required, and the signal line required for controlling the lens and the like is not required, so that the flexible cable 66 can be downsized and the cost can be reduced.

(Second Embodiment) A second embodiment of the present invention will be described with reference to FIGS. 4 and 5. In the second embodiment, the slot of the computer 2 is TYPEI.
It is also possible to support the case where there is only one for I. 4 and 5
In the above, the same elements as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 4 shows the entire system including the image pickup apparatus and the computer of this embodiment.
25 is a block diagram showing the imaging unit 1.

The control unit 26 controls the memory connected to the image pickup unit 1 and the card interface (I / F) # 1 (24) and the card interface (I / F) # 2 (25). The function of a bus selector that switches between is also included. It also has a buffer for temporarily storing information from the card.

Further, 31 is an external storage memory card composed of a flash memory or the like, and 32 is a FAX card.

FIG. 5 is a schematic sectional view showing the state where the image pickup unit 1 is inserted in the computer 2. In the computer 2, a slot portion 41 surrounded by a broken line is a slot for inserting a PC card and is a TYPE II PC card. 1
It is possible to insert one. In the imaging unit 1, 2
4 is a card I / F (connector) to which the memory card 31 can be connected vertically to the main substrate 51, and 25 is an FA
A card I / F (connector) to which the X card 32 can be connected vertically to the main substrate 51, and a card case 55 are provided with openings 55b and 55c corresponding to the memory card 31 and the FAX card 32 on the upper surface. There is. Also, 5
The outer shape of the card formed by the covers 3 and 54 is TYP.
It corresponds to the shape of EII.

According to the above configuration, even when the computer has only one slot for TYPE II, the camera utility program is stored in the memory card so that the card type image pickup device can be operated by any personal computer, and the main body can be operated. Images can be recorded without worrying about the storage capacity of. Further, since the control unit 26 has a function of a bus selector, the stored image can be temporarily stored in the memory system 6 of the personal computer main body and the information can be communicated via the FAX card. Further, it is of course possible that not only the image information but also the information of the computer itself can be communicated with the FAX card. Further, since the memory card 31 and the like are connected vertically to the card portion, the image pickup unit can be configured without increasing the size of the image pickup unit in the longitudinal direction.

Even when two TYPEII PC cards or one TYPEIII PC card can be inserted, the memory card does not interfere with the slot, so that the card-type image pickup according to the present invention is inserted in the slot. Another advantage is that other IC cards can be inserted.

Further, in the above description, a memory card or FA
Although the X card is described as connectable, it is also possible to connect, for example, a LAN card or an IrDA card other than the memory card or the FAX card. This second embodiment has the same effect as adding a slot.

Further, although the memory card has been described as being connected vertically to the substrate, it is possible to connect the memory card at a portion protruding from the computer in the width direction of the card portion and parallel to the card portion.

In the above embodiment, the image pickup unit has a FAX.
Although it has been described that a card or the like is connected, it is also possible to conversely connect the imaging unit to the FAX card.

(Third Embodiment) FIGS. 6 and 7 show a third embodiment. In the third embodiment, the computer 2 has two TYPE II PC cards, or
This is applicable to the case where one TYPEIII PC card can be inserted, and the image pickup apparatus according to the third embodiment has a card section of TYPEIII. 6 and 7
In the above, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 6 is a schematic sectional view showing the state where the image pickup unit 1 is inserted into the computer 2. In the computer 2, the slot portion 42 surrounded by a broken line is a slot for inserting a PC card and is a TYPE II PC card. 2 or 1 TYPE III PC card can be inserted. In the imaging unit 1, 20 is D
CDC converters, 33 and 34 are memory cards, 71 is a main board, 72 is a side wall of a card frame, and 73 and 74
Is the cover. The outer shapes of the cards 73 and 74 formed by the covers correspond to the shape of TYPE III, and the memory cards 31 and 32 are inserted into the card connector 75 in the width direction of the main board 51 and in parallel.

FIG. 7 is a cross-sectional view in the width direction of the card type image pickup device in the vicinity of the memory card 33. An opening 73a for inserting the memory card 33 is provided on the side surface of the cover 73. An opening for inserting the card 34 is also provided adjacently. The opening 7
3a is provided with a shutter member (not shown), which is closed when the memory card 33 is not inserted,
It is opened upon insertion. This prevents dust and the like from entering the device.

With such a configuration, it is possible to connect a plurality of memory cards, and the number of stored images also increases. It is also possible to store the camera utility program in one and record the image in the other. Further, the height of the DCDC converter 20 can be lowered by also using the shield member as the cover 73, and the portion protruding from the personal computer installed inside the card portion can be the image pickup portion only. As a result, the size of the card in the longitudinal direction can be suppressed.

(Fourth Embodiment) As a fourth embodiment,
A flash memory for storage is mounted on a substrate in advance. With such a configuration, a large-capacity image file as shown in the first to third embodiments is not possible, but a file of several to several tens of images is possible. For example, assuming that the flash memory is equivalent to 8 Mbit, the captured image is 320 pixels × 240 pixels, RGB
When each color is 8 bits and the compression rate by the jpeg method is 1/8, about 30 sheets can be stored. Similarly, when a moving image is used, the frame rate is 7.5 frames per second, which is about 4 seconds. This changes depending on the capacity of the mounted flash memory, the size of the captured image, or the compression rate, and in the case of a moving image, the speed of the compression rate.

Since it is not necessary to provide a card connector, the size can be reduced.

(Other Embodiments) In the image pickup unit, the camera head and the card body are mechanically rotatably connected to each other, but the camera head and the card body can be connected by a cable. In this case, it is possible to shoot a wider area by rotating the camera head by 180 ° as compared with the present embodiment.

[0056]

As described above, according to the invention described in claim 1 or 2 of the present application, an electronic device for receiving power supply from an external device and inputting image information to the external device. In, an image pickup unit and a connector for outputting image information from the image pickup unit, a part of which is provided with a card-shaped output unit, and the output unit can store the image information from the image pickup unit By providing an interface for connecting a storage unit or a storage unit capable of storing image information from the image pickup unit, sufficient image information can be recorded even if the external device itself does not have a large capacity memory. It is now possible to obtain a system that can.

According to the invention described in claim 13 of the present application, in an electronic device which is supplied with power from an external device and a part of which is card-shaped, another one having a card-shaped connecting portion is provided. By providing an interface for connecting electronic devices, a system capable of connecting a plurality of electronic devices to an external device can be constructed without complicated work even when many electronic devices cannot be connected to the external device itself.

According to the seventeenth or eighteenth aspect of the present invention, in an electronic device which is supplied with power from an external device and a part of which has a card shape, information from the external device is transmitted. With regard to the electronic device, a storage unit that can store the program that controls the electronic device or an interface for connecting the storage unit that stores the program that controls the electronic device is provided. Since it has a storage unit that can be recognized as a storage device for the external device without causing the external device to separately recognize the control information of 1., a system with a large storage capacity centering on the external device can be easily constructed. .

[Brief description of drawings]

FIG. 1 is a perspective view showing a structure of an image pickup unit as one embodiment of the present invention.

FIG. 2 is a block diagram showing a system including an imaging device and a computer as an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state where the image pickup unit of FIG. 1 is inserted into a computer.

FIG. 4 is a block diagram showing a system including an image pickup apparatus and a computer according to a second embodiment of the present invention.

5 is a cross-sectional view showing a state in which the image pickup unit shown in FIG. 4 is inserted into a computer.

FIG. 6 is a cross-sectional view showing a state in which an image pickup unit is inserted in a computer in a system including an image pickup apparatus and a computer according to still another embodiment of the present invention.

7 is another cross-sectional view of the system shown in FIG.

FIG. 8 is a perspective view showing the configuration of a known card-type imaging device.

[Explanation of symbols]

1 Imaging Unit 2 Computer 3 CPU 4 Interface (I / F) 8 Power Management System 10 External Power Supply Device 13 CCD (Imaging Device) 18, 26 Control Unit 19 Camera Interface 21, 24, 25 Card Interface (Connector) 30, 31, 33, 34 external storage memory card 32 fax card 40, 41, 42 slot 50 card body 52 card frame 55 card case 60 imaging unit

Claims (19)

[Claims] 1. A power supply is supplied from an external device, and
An electronic device for inputting image information and the external device, comprising: an image pickup section; and a connector for outputting image information from the image pickup section, a part of which has a card-shaped output section, An electronic device characterized in that a storage unit capable of storing image information from the image pickup unit is provided in the output unit. 2. Power is supplied from an external device, and
An electronic device for inputting image information and the external device, comprising: an image pickup section; and a connector for outputting image information from the image pickup section, a part of which has a card-shaped output section, An electronic device comprising an output unit provided with an interface for connecting a storage unit capable of storing image information from the imaging unit. 3. The external device is a computer,
2. The electronic device according to claim 1, wherein a part of the output unit has a common shape with a memory card that can be inserted into a slot of the computer, and the electronic device can be attached to the computer through the slot. machine. 4. The external device is a computer,
3. The electronic device according to claim 2, wherein a part of the output unit has a common shape with a memory card that can be inserted into a slot of the computer, and the electronic device can be attached to the computer through the slot. machine. 5. The storage section is arranged substantially parallel to a part of the output section, and is arranged to be insertable into the slot together with a part of the output section.
Electronics. 6. The interface holds the storage unit in a state in which the storage unit is arranged substantially perpendicular to a part of the output unit, and the storage unit is provided with the slot when the electronic device is mounted on the computer. The electronic device according to claim 4, wherein the electronic device is arranged in the vicinity. 7. The electronic device according to claim 2, 4 or 6, wherein the interface can connect a plurality of cards. 8. The electronic device according to claim 2, 4, 6, or 7, wherein a communication card can be connected to the interface. 9. The storage unit is a flash memory,
The device is mounted on the output unit.
Or 3 electronic devices. 10. The storage unit stores a program for controlling the electronic device.
To 9 electronic devices. 11. The electronic device according to claim 1, wherein the storage unit can store information from the external device. 12. The electronic device according to claim 1, wherein the output unit has a housing having a card shape, and the storage unit is installed in the housing. 13. An electronic device, which is supplied with power from an external device and has a card-shaped part, and which is provided with an interface for connecting to another electronic device having a card-shaped connecting portion. An electronic device characterized by. 14. The interface is capable of mounting a plurality of card-shaped connecting portions.
Electronics. 15. The external device is a computer, the electronic device having the same shape as a part of the memory card that can be inserted into a slot of the computer, and the electronic device having the computer through the slot. 15. It can be attached to
Electronics. 16. The interface holds a card-shaped connection portion of the other electronic device in a state of being arranged substantially vertically to the part of the electronic device, and the electronic device is attached to the computer. 16. The electronic device according to claim 15, wherein a card-shaped connecting portion of the other electronic device is arranged near the slot. 17. An electronic device which is supplied with power from an external device and has a part of a card shape and which can store information from the external device and which controls the electronic device. An electronic device comprising a storage unit in which a RAM is stored. 18. An electronic device which is supplied with power from an external device and has a part of a card shape and which can store information from the external device and controls the electronic device. An electronic device provided with an interface for connecting a storage unit in which a RAM is stored. 19. The external device is a computer, a part of the electronic device has a shape common to a memory card that can be inserted into a slot of the computer, and the electronic device is connected to the computer via the slot. 20. The electronic device according to claim 18, which is wearable.