JP4411000B2 - Electronics - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic apparatus suitable for application to, for example, a mobile phone or a game machine equipped with a rotary operation means having a horizontal rotation detection function and a push switch function.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, an operation switch including press switch means (hereinafter referred to as a switch) is used in a cellular phone or the like in the lower part of the vicinity of the outer periphery of the operation panel and in four directions of up, down, left and right. Pressing the target switch of this operation switch as appropriate to move the cursor on the display screen that responds to the operation of this operation switch up, down, left or right, or to enter commands such as scrolling the data displayed on the screen Can do. Further, on the operation panel surface of this operation switch, for example, there is a print for recognizing the up / down / left / right switch positions so that the target switch can be surely pressed (for example, (See Cited Document 1).
[0003]
In addition to the operation switch for instructing such a direction, in recent years, what is called a jog dial has been developed as an operation means that has both a rotation detection function and a press detection function and can be mounted on an electronic device such as a cellular phone. . FIG. 7 shows an example of a jog dial mounted on an electronic device and its peripheral portion, FIG. 7A is a top view, and FIG. 7B is a cross-sectional view taken along the line WW of FIG. 7A. In the example of FIG. 7, it is shown as a jog dial that rotates in the horizontal direction. Here, this jog dial is referred to as a disc jog dial.
In FIG. 7A, reference numeral 103 denotes a disk jog dial rotating disk that is rotatably arranged in the horizontal direction, and 105 is a switch provided in a device casing below the rotating disk rotation center, 106a, 106b, 106c, 106d (hereinafter, referred to as “rotating disk”). 106a to 106d) indicates the switches provided at the upper, lower, left and right positions near the outer periphery of the rotating disk by broken lines.
[0005]
In FIG. 7B, reference numeral 100 denotes a cross section of the equipment casing in which the disk jog dial is installed, and cross sections of the switches 105, 106a, and 106c on the turntable 103 and the cutting line WW are indicated by hatching. The switch 105 is disposed at the bottom of the rotary shaft storage hole 101, the switches 106a to 106d are respectively disposed at predetermined positions on the bottom of the rotary disk storage hole 102, and the rotary shaft 104 that also serves as the vertical pressing portion of the switch 105 is the rotational shaft. The rotary disk 103 is stored in the rotary disk storage hole 102 while being stored in the storage unit 101.
[0006]
By the user's rotation operation, the rotation shaft 104 of the turntable 103 rotates in the horizontal direction with the switch 105 as a fulcrum. Any one of the switches 105 and 106a to 106d comes into contact with each other and a desired switch is turned on.
[0007]
FIG. 8 shows an example of a rotation detector that detects the rotation of the rotating disk 103 of the disk jog dial. Reference numeral 203 denotes a rotating disk, and a dotted line 204 represents the position of a magnet arranged on the back surface of the rotating disk 203, for example, at a position obtained by dividing one circumference into 12 equal parts. Reference numeral 200 denotes, for example, a casing of an electronic device, and reference numerals 201 and 202 denote magnetic sensors composed of Hall elements.
[0008]
In such a configuration, when the turntable 103 is rotated, the magnets arranged on the backside of the turntable rotate, and the change in the magnetic field is detected by the two sensors 201 and 202 provided in the device casing. By monitoring the detection phase difference and detection order of the sensors 201 and 202, information on the rotation amount and the rotation direction can be obtained, and this information is supplied to the control unit of the electronic device body and displayed on the screen. A predetermined control such as moving the cursor is performed.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-149301
[Problems to be solved by the invention]
However, when there are a plurality of switches below the turntable, such as the disc jog dial having the configuration shown in FIG. 7, the most accurate operation feeling can be obtained by pressing directly above the target switch. There is a fear of misoperation. For example, as shown in FIG. 7A, when the surface of the turntable corresponding to the middle part of the switches 105 and 106a is pushed or the surface of the turntable corresponding to the middle part of the switches 106b and 106c is pushed, an unintended switch reacts. Incorrect operation such that neither switch reacts.
[0011]
In order to perform an accurate operation, it is necessary to perform an operation after confirming a place to be pressed. Therefore, the operation takes time, or a print for displaying the switch position on the surface of the operation unit described in the cited document 1 is performed. When the method is applied, there is a problem in that an operation is likely to cause an erroneous operation when the operation is difficult to visually recognize. Further, since the turntable 13 is rotated, the printed switch position and the right / left / upper / lower positional relationship of the switch installed below the turntable 103 are shifted, and there is a disadvantage that printing does not make sense. There was a problem that occurred.
[0012]
In view of such a point, an object of the present invention is to provide an electronic apparatus that can easily recognize the position of the pressing switch means during operation of the rotating disk of the rotary type operating means and can improve the operability. .
[0013]
[Means for Solving the Problems]
Electronic device of the present invention, a housing, a rotary disc disposed in the housing rotatably in a horizontal direction, a rotation detecting means for detecting the rotation of the turntable, provided in the turntable outer peripheral portion near the lower And a plurality of press switch means provided on the surface of the casing around the turntable, provided as identification portions at positions corresponding to the plurality of press switch means , respectively , by an operator who operates the turntable. And a concave-curved recess that matches the shape of the lower side surface of the finger.
The recess is formed such that its uppermost portion is higher than the rotating disk, and its lowermost portion is formed so as to be substantially the same height as the rotating disk. It is formed so as to be along the outer peripheral portion .
[0014]
According to the present invention, since the depression as the identification portion is provided at a position corresponding to each of the plurality of press switch means on the surface of the casing around the rotating disk, even if the rotating disk rotates. It is possible to easily grasp the position of the pressing switch means installed below the rotating disk by touch.
In addition, the shape of the recess is formed so that the uppermost part is higher than the rotating disk, the lowermost part is formed so as to be substantially the same height with respect to the rotating disk, and the lowermost part is It is formed along the outer periphery of the turntable and has a concave curved surface that matches the shape of the lower side of the finger of the operator who rotates the turntable, further improving operability and moving the finger up and down on the turntable slide the left and right like a finger is stopped at position corresponding concave surface, by pressing the position, it can be operated accurately and promptly. For example, this is particularly effective when a fast operation is required such as a game operation device.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to FIG. 1 to FIG. 4, an example of an embodiment of the electronic apparatus of the present invention will be described for a case where it is applied to a so-called portable mobile phone.
[0016]
This example is an example applied to a so-called foldable mobile phone, and FIG. 1 shows an external perspective view of the foldable mobile phone of this example with the lower and upper housings fully opened.
[0017]
In FIG. 1, reference numeral 1 denotes a lower housing, and 11 denotes an upper housing. The lower housing 1 and the upper housing 11 are connected to each other by a hinge portion 10 so as to be freely opened and closed. The operation button group 2, a so-called disc jog dial rotating disk 23 having both a horizontal rotation detecting function and a pressing switch function, and a microphone 4 are provided on a surface that is in contact with the upper casing 11 in the closed state.
[0018]
Inside the upper housing 11, a display screen (hereinafter referred to as a main screen) 12, such as an LCD (Liquid Crystal Display), which is mainly used in a state in which the folding cellular phone is opened, and a speaker 13 are provided. It has been. Further, an image sensor such as a CCD (Charge Coupled Device) type or a CMOS (Complementary Metal-Oxide Semiconductor) type is stored in the middle part of the hinge unit 10 and is independent of the opening / closing operation of the lower casing 1 and the upper casing 11. A camera 20 that can be rotated by approximately 180 ° is provided. Reference numeral 21 denotes a lens of the camera 20.
[0019]
FIG. 2 shows an external perspective view of the lower case and the upper case of the folding cellular phone of this example in a half-open state. In the figure, a display screen (hereinafter referred to as a sub-screen) 14 made up of, for example, an LCD, which is mainly used when the foldable mobile phone is closed, and a shutter button 15 of the camera 20 are arranged outside the upper housing 11. Has been. Moreover, although not shown in figure, the antenna for transmitting and receiving a radio signal is provided.
[0020]
FIG. 3 is a block diagram showing an example of the circuit configuration of the mobile phone of this example.
[0021]
110 is a control unit that controls the entire system, 107 is a general-purpose RAM (Random Access Memory) that stores various information and provides a work area necessary for the control unit 110 to perform control, and 108 is a control program. It is a stored ROM (Read Only Memory). The control unit 110 includes a CPU (Central Processing Unit) 111 for calculation and control, and is connected to an external interface 112 for connecting to the RAM 107, the ROM 108, and various peripheral devices through a system bus (not shown). When 2 or 23 is operated, the operation output is supplied to the CPU 111 via the external interface 112 and the system bus, and the CPU 111 performs predetermined processing according to the program in the ROM 108.
[0022]
Reference numeral 101 denotes an antenna that transmits and receives a radio signal, and is connected to an antenna duplexer 102 that shares the received signal and the transmission signal with one antenna, and a transmission signal from the control unit 110 passes through the modulator 103 and the antenna duplexer 102. The received signal transmitted from the antenna 101 and received from the antenna 101 is supplied to the control unit 110 via the antenna duplexer 102 and the demodulator 104.
[0023]
When the demodulator 104 receives a telephone call or e-mail from the base station via the antenna 101, the received signal is supplied to the control unit 110. The control unit 110 uses the voice from the speaker 13 to call the e-mail or send an e-mail. The user is notified of the reception, is notified by a blinking display by the LED 105 provided on the back of the operation button group 2, and is also notified by the vibrator 106 by a body vibration. At this time, the control unit 110 displays the telephone number of the other party and the address of the e-mail sender on the screen of the display device 12 or 14 via a display controller (not shown).
[0024]
When the user answers the call, the other party's voice signal is received by the demodulator 104 via the antenna 101, supplied to the speaker 13 via the control unit 110, and the user's own voice signal from the microphone 4 is also received. An audio signal is supplied from the control unit 110 to the antenna 101 via the modulator 103 and transmitted to the base station. Thus, a call with the other party is performed. When the received electronic mail is opened, the content of the mail is displayed on the screen of the display device 12 or 14.
[0025]
The camera 20 captures an image of a subject through a lens 21 with a desired angle of view setting, the captured image is displayed on the display device 12 or 14 via the control unit 110, and the displayed image is displayed on the operation button group 2 or the like. By pressing a provided shutter button, a desired still image or moving image can be stored in an internal non-volatile memory (not shown) or a removable recording medium.
[0026]
Next, the disk jog dial and its peripheral shape mounted on the cellular phone of this example will be described in detail. FIG. 4 shows the disk jog dial of this example and its peripheral part, FIG. 4A shows a top view, and FIG. 4B shows a cross-sectional view taken along line XX of FIG. 4A.
[0027]
In FIG. 4A, reference numeral 23 represents a disk jog dial rotating disk disposed so as to be rotatable in the horizontal direction, and reference numeral 23a represents a recess provided at the rotating disk rotation center on the surface of the rotating disk 23. Reference numerals 26a, 26b, 26c, and 26d (hereinafter referred to as 26a to 26d) indicate the switches provided at the upper, lower, left, and right positions near the outer periphery of the rotating disk by broken lines. In addition, 27a, 27b, 27c, and 27d (hereinafter referred to as 27a to 27d) are vertically, horizontally, and horizontally below the outer peripheral portion of the rotating plate 23, which will be described later, on an equipment casing (lower casing) around the rotating plate 23. It is a protrusion provided as an identification part for recognizing the position of a pressing switch means (hereinafter referred to as a switch) provided at a position, and is disposed on a radial extension line connecting the rotation center of the turntable 23 and each switch. ing.
[0028]
In FIG. 4B, reference numeral 1 denotes an equipment housing (lower housing) in which the disk jog dial is installed. The cross sections of the rotary table 23 and the switches 25, 26a, and 26c on the cutting line XX are represented by oblique lines. Yes. The switches 26a and 26c are a right switch and a left switch, respectively. As shown in FIG. 4A, in this example, the switches are installed in four directions, up, down, left, and right. The switch 25 is disposed at the bottom of the rotary shaft storage hole 21, and the switches 26 a to 26 d are respectively disposed at predetermined positions on the bottom of the rotary disk storage hole 22, and the rotary shaft 24 that also serves as the vertical pressing portion of the switch 25 is the rotational shaft. The rotary disk 23 is stored in the rotary disk storage hole 22 while being stored in the storage unit 21.
[0029]
In this example, the surface of the turntable 23 and the height of the device housing 1 are substantially the same, but the protrusions 27a to 27d make a difference in height from the surface of the turntable 23 and the inner peripheral wall of the storage groove 22 The side walls of the projections 27a to 27d are touched by the operator's fingers.
[0030]
As an example of the rotation detecting means for detecting the rotation of the rotating disk 23 of the disk jog dial of this example, a rotation detector as shown in FIG. 8 is given as an example. That is, in FIG. 8, reference numeral 203 denotes a rotating disk, and a dotted line 204 represents the position of a magnet disposed on the back surface of the rotating disk 203 at, for example, a position that is divided into 12 equal parts. Reference numeral 200 denotes, for example, a casing of an electronic device, and reference numerals 201 and 202 denote magnetic sensors composed of Hall elements.
[0031]
When the turntable 23 is rotated, the magnets arranged on the backside of the turntable rotate, and the change in the magnetic field is detected by the two sensors 201 and 202 provided in the device casing. At this time, the sensors 201 and 202 By monitoring the detection phase difference and the detection order, information on the rotation amount and the rotation direction can be obtained, and this information is supplied to the control unit of the electronic device main body, and the cursor displayed on the screen is moved. The predetermined control is performed. The rotation detecting means applied to this example is not limited to this example, and various other configurations can be employed using other known techniques.
[0032]
When the user rotates the disk jog dial, the rotating shaft 24 of the rotating disk 23 rotates in the horizontal direction with the switch 25 as a fulcrum, and when the desired position of the rotating disk 23 is pushed, One of the switches 25, 26a to 26d in the vicinity of the outer peripheral portion of the rotating disk comes into contact with the desired switch.
[0033]
With this configuration, according to the present example, the surface of the turntable 23 is placed on the device housing 1 around the turntable 23 on the radius extension connecting the rotation center of the turntable 23 and the switches 26a to 26d. Since the protrusions 27a to 27d are provided as identification portions having different heights from each other, when the operator rotates the fingertip, the protrusions 27a to 27d do not visually recognize the dial even if the turntable 23 rotates. It is possible to press the up / down / left / right switches 26a to 26d provided below the rotary disk 23 with the sense of touch.
[0034]
In addition, since the recess 23a is provided near the center of the surface of the turntable, the center of the turntable 23 can be recognized and pressed by tactile sense without visually recognizing the dial, and the dial is rotated by pressing without recognizing the center. It is possible to operate accurately and quickly without causing erroneous operations such as inadvertent operation or pressing of an unintended switch.
[0035]
Next, an example of another embodiment of the present invention will be described with reference to FIG. FIG. 5 describes in detail the disc jog dial and its peripheral shape mounted on the mobile phone of this example. In this example, the device casing is higher than the surface of the turntable, and a concave curved dent is provided on the device case around the turntable on the radius extension connecting the turntable rotation center and each switch. There are other configurations similar to those in the example of FIG. FIG. 5 shows the disk jog dial of this example and its peripheral part, FIG. 5A shows a top view, and FIG. 5B shows a cross-sectional view taken along line YY of FIG. 5A. In FIG. 5, parts corresponding to those in FIG.
[0036]
In FIG. 5A, reference numeral 33 denotes a disk jog dial rotating disk disposed so as to be rotatable in the horizontal direction, and 33a is a protrusion provided at the rotating disk rotation center on the surface of the rotating disk 33. 37a, 37b, 37c, and 37d (hereinafter referred to as 37a to 37d) are placed on the equipment housing (lower housing) around the turntable 33 at the upper, lower, left, and right positions below the periphery of the turntable 33, which will be described later. It is a depression provided as an identification part for recognizing the position of the provided pressing switch means (hereinafter referred to as a switch), and is arranged on a radius extension line connecting the rotation center of the rotating disk 33 and each switch. . Further, the shape of these depressions is a concave curved surface so as to match the shape of the side lower surface (side surface of the finger belly) of the operated finger.
[0037]
In FIG. 5B, reference numeral 1 denotes an equipment housing (lower housing) in which the disk jog dial is installed. The cross sections of the rotary table 33 and the switches 25, 26a, and 26c on the cutting line YY are shown by hatching. Yes. The switches 26a and 26c are a right switch and a left switch, respectively. As shown in FIG. 5A, in this example, the switches are installed in four directions, up, down, left, and right. The switch 25 is disposed at the bottom of the rotary shaft storage hole 31, and the switches 26 a to 26 d are respectively disposed at predetermined positions on the bottom of the rotary disk storage hole 32, and the rotary shaft 24 also serving as the vertical pressing portion of the switch 25 is the rotational shaft. The rotary disk 33 is stored in the rotary disk storage hole 32 while being stored in the storage unit 31.
[0038]
With this configuration, according to the present example, the surface of the rotating disk 33 is placed on the device housing 1 around the rotating disk 33 on the radius extension connecting the rotation center of the rotating disk 33 and the switches 26a to 26d. Since the depressions 37a to 37d are provided as identification parts having different heights from each other, when the operator performs a rotation operation, the fingertips of the depressions 37a to 37d do not visually recognize the dial even if the turntable 33 rotates. The up / down / left / right switches 26a to 26d provided below the turntable 33 can be pressed with the sense of touch.
[0039]
In addition, since the shape of the depressions 37a to 37d is a concave curved surface, the operability is further improved, and the finger is slid up and down, left and right on the rotating disk 33 to stop the finger at a position where it hits the concave curved surface and press the position. Therefore, it can be operated accurately and promptly. For example, this is particularly effective when a fast operation is required such as a game operation device.
[0040]
In addition, since the protrusion is provided in the vicinity of the center of the turntable, the center of the turntable 33 can be recognized and pressed by touch even without visually checking the dial, and the operation can be performed accurately and quickly. In addition, this example can obtain the same effects as the example of FIG.
[0041]
Next, another example of the embodiment of the present invention will be described with reference to FIG. FIG. 6 explains in detail the disc jog dial and its peripheral shape mounted on the mobile phone of this example. In this example, the turntable and the switch on the rotation axis are independent, and a protrusion having a concave curved depression on the device housing around the turntable on the radius extension connecting the turntable rotation center and each switch ( (Uneven portion) is provided, and the rest of the configuration is the same as in the example of FIG. FIG. 6 shows the disk jog dial of this example and its peripheral part, FIG. 6A shows a top view, and FIG. 6B shows a cross-sectional view taken along the line ZZ of FIG. 6A. In FIG. 6, parts corresponding to those in FIG.
[0042]
In FIG. 6A, reference numeral 43 represents a doughnut-shaped rotating disk of a disk jog dial disposed so as to be rotatable in the horizontal direction, and 44 is a vertical pressing portion provided at the rotating disk rotation center independently of the rotating disk 43. Reference numeral 40 forms a boundary between the rotary disk 43 and the vertical pressing portion 44 and constitutes a storage hole for the rotary disk 43 and a storage hole for the vertical presser, which will be described later.
[0043]
47a, 47b, 47c, and 47d (hereinafter referred to as 47a to 47d) are arranged on the equipment casing (lower casing) around the turntable 43 at the upper, lower, left and right positions below the outer periphery of the turntable 43 described later. It is a protrusion provided as an identification part for recognizing the position of the provided switch, and is disposed on a radius extension line connecting the rotation center of the rotary disk 43 and each switch. Further, these protrusions 47a to 47d have depressions 48a, 48b, 48c and 48d (hereinafter referred to as 48a to 48d), and are concave curved surfaces so as to match the shape of the side lower surface of the finger to be operated.
[0044]
In FIG. 6B, reference numeral 1 denotes an equipment housing (lower housing) in which the disk jog dial is installed. The cross sections of the rotary plate 43 and the switches 25, 26a, and 26c on the cutting line ZZ are shown by hatching. Yes. The switches 26a and 26c are a right switch and a left switch, respectively. As shown in FIG. 6A, in this example, the switches are installed in four directions, up, down, left, and right. The switch 25 is disposed at the bottom of the rotary shaft storage hole 41, the switches 26a to 26d are respectively disposed at predetermined positions on the bottom of the rotary disk storage hole 42, and the vertical pressing portion 44 of the switch 25 is connected to the vertical pressing portion storage portion 41. The rotary disk 43 is stored in the rotary disk storage hole 42 while being stored.
[0045]
In this example, the surface of the turntable 43 and the height of the equipment casing 1 are substantially the same, but the equipment housing around the turntable 43 on the radius extension connecting the rotation center 43 and the switches 26a to 26d. Protrusions 47a to 47d are provided on 1 to make a difference in height from the surface of the turntable 43, and depressions 48a to 48d are provided in portions of the protrusions 47a to 47d where the operator's fingers come into contact. The configuration is similar to the example.
[0046]
With this configuration, according to this example, the surface of the rotating disk 43 is placed on the device housing 1 around the rotating disk 43 on the radius extension connecting the rotation center of the rotating disk 43 and the switches 26a to 26d. Since the projections 47a to 47d having the depressions 48a to 48d as the identification portions having different heights are provided, the dial can be visually recognized even when the turntable 43 is rotated when the operator rotates. In addition, the depressions 48a to 48d can be used to push the up / down / left / right switches 26a to 26d provided below the rotary disk 43 by touching the fingertips.
[0047]
In addition, since the shape of the recesses 48a to 48d is a concave curved surface, the operability is further improved, and the finger is slid up and down and left and right on the rotating disk 43 to stop the finger at a position where it hits the concave curved surface and press the position. Therefore, it can be operated accurately and promptly. For example, this is particularly effective when a fast operation is required such as a game operation device. In addition, this example can obtain the same effects as the example of FIG.
[0048]
In this example, since the turntable 43 has a donut shape and the vertical pressing portion 44 at the center of rotation does not rotate independently, a switch can be provided near the inner periphery of the turntable 43.
[0049]
In addition, the identification part provided in the position corresponding to the press switch on the surface of the housing around the turntable of the present invention is only required to be identified by the tactile sense of the fingertip. Something like that.
[0050]
Further, the present invention can be applied to operation units of various devices such as a game machine, a PDA (personal digital assistant) and a personal computer in addition to the above-described mobile phone.
[0051]
The present invention is not limited to the above-described embodiments, and various other configurations can be taken without departing from the gist of the present invention.
[0052]
【The invention's effect】
According to the present invention, since the depression as the identification portion is provided at a position corresponding to each of the plurality of press switch means on the surface of the casing around the rotating disk, even if the rotating disk rotates. The position of the press switch means installed below the turntable can be easily grasped by touch, and the operability can be improved.
In addition, the shape of the recess is formed so that the uppermost part is higher than the rotating disk, the lowermost part is formed so as to be substantially the same height with respect to the rotating disk, and the lowermost part is It is formed along the outer periphery of the turntable and has a concave curved surface that matches the shape of the lower side of the finger of the operator who rotates the turntable, further improving operability and moving the finger up and down on the turntable slide the left and right like a finger is stopped at position corresponding concave surface, by pressing the position, it can be operated accurately and promptly. For example, this is particularly effective when a fast operation is required such as a game operation device.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a foldable mobile phone according to an embodiment of the present invention in a fully opened state.
2 is an external perspective view of the folding mobile phone of FIG. 1 in a slightly opened state.
FIG. 3 is a block diagram showing an example of a circuit configuration of the mobile phone according to the embodiment of the present invention.
FIGS. 4A and 4B are a top view and a cross-sectional view showing a peripheral shape of a disk jog dial according to an embodiment of the present invention. FIGS.
FIGS. 5A and 5B are a top view and a cross-sectional view showing a peripheral shape of a disk jog dial according to another embodiment of the present invention. FIGS.
FIGS. 6A and 6B are a top view and a sectional view showing a peripheral shape of a disc jog dial according to another embodiment of the present invention. FIGS.
7A and 7B are a top view and a cross-sectional view showing a peripheral shape of a conventional disc jog dial.
FIG. 8 is a diagram showing an example of a rotation detector.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... A device housing (lower housing), 23, 33, 43, 203 ... A turntable, 23a ... A depression, 33a ... A projection, 25, 26a, 26b, 26c, 26d... Switch (press switch means), 27a, 27b, 27c, 27d, 37a, 37b, 37c, 37d, 47a, 47b, 47c, 47d, 48a, 48b, 48c, 48d,. 201, 202... Magnetic sensor (rotation detection means)

Claims (3)

A housing,
A turntable disposed in the housing so as to be rotatable in a horizontal direction;
Rotation detection means for detecting rotation of the rotating disk;
A plurality of press switch means provided near the outer periphery of the rotating disk;
Aligned with the shape of the lower side surface of the finger of the operator who rotates the rotating disk, provided as an identification portion at a position corresponding to each of the plurality of press switch means on the surface of the casing around the rotating disk A concave curved surface shaped recess ,
The recess is formed such that its uppermost portion is higher than the rotating disc, and its lowermost portion is formed so as to be substantially the same height as the rotating disc. It is formed along the outer periphery of the rotating disk
An electronic device characterized by that . The electronic device according to claim 1,
The depressions are provided at the top, bottom, left, and right positions around the turntable on the device housing.
An electronic device characterized by that . The electronic device according to claim 1,
A protrusion or a depression is provided at the rotation center of the surface of the rotating disk.
An electronic device characterized by that .

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