CN212392932U - Camera module, camera anti-shake system and mobile terminal - Google Patents
Camera module, camera anti-shake system and mobile terminal Download PDFInfo
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- CN212392932U CN212392932U CN202021984744.9U CN202021984744U CN212392932U CN 212392932 U CN212392932 U CN 212392932U CN 202021984744 U CN202021984744 U CN 202021984744U CN 212392932 U CN212392932 U CN 212392932U
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Abstract
The utility model discloses a camera module, a camera anti-shake system and a mobile terminal, which comprises a camera module body, a stator, a rotor, a translation anti-shake circuit board and a bottom board circuit board; the camera module body is placed on the translation anti-shake circuit board; the rotor is fixedly sleeved outside the camera module body, and at least two adjacent frames of the rotor are respectively and fixedly provided with a first rotating driving part; the lower end of the stator is fixedly arranged on the translational anti-shake circuit board, and the stator is sleeved outside the rotor; a second rotary driving piece is arranged on the inner side of the stator; two or four first translation driving parts are arranged in the middle of the bottom board circuit board; the translation anti-shake circuit board is positioned right above the bottom board circuit board, and the translation anti-shake circuit board is connected with the bottom board circuit board through a connecting column; and a second translation driving part is arranged on the translation anti-shake circuit board. The utility model discloses have the anti-shake function of shooing.
Description
Technical Field
The utility model belongs to the technical field of the camera module, concretely relates to camera module, camera anti-shake system and mobile terminal.
Background
The traditional camera module without the anti-shake function can cause the problem of unclear image quality due to shaking of a hand-held user when taking a picture. At present, the anti-shake camera module which can be seen usually achieves the purpose of anti-shake through a movable lens, the anti-shake camera module easily causes dark corners, the edge image quality loss and the like, the anti-shake effect is limited, and the anti-shake deviation correction range is not as good as the anti-shake effect of the camera module. In the existing module anti-shake scheme, because the structure is more complicated, the size is bigger, the cost is higher, the soft board line is too long, the signal attenuation is bigger, the pulling force of the soft board to the camera module itself can not be eliminated, and the applicability is more limited.
Therefore, it is necessary to develop a new camera module, a camera anti-shake system and a mobile terminal.
Disclosure of Invention
The utility model aims at providing a camera module, camera anti-shake system and mobile terminal can play better anti-shake effect.
In a first aspect, the camera module of the present invention comprises a camera module body, a stator, a rotor, a translational anti-shake circuit board and a bottom board circuit board;
the camera module body is placed on the translation anti-shake circuit board;
the rotor is a square frame, the outer surface of the connecting part of any two adjacent frames of the square frame is a first cambered surface, and the four first cambered surfaces are all positioned on the same spherical surface; the rotor is fixedly sleeved outside the camera module body, and at least two adjacent frames of the rotor are respectively and fixedly provided with a first rotating driving part;
the lower end of the stator is fixedly arranged on the translation anti-shake circuit board, and the stator is sleeved outside the rotor; second cambered surfaces are arranged on the inner side surface of the stator at positions corresponding to the first cambered surfaces, and the four second cambered surfaces are positioned on the same spherical surface;
a ball groove is formed in the first cambered surface of the rotor or the second cambered surface of the stator, balls are arranged in the ball groove, and the balls are clamped between the stator and the rotor;
a second rotary driving piece is arranged at the position, corresponding to the first rotary driving piece, of the inner side of the stator, and a gap is formed between the second rotary driving piece and the corresponding first rotary driving piece;
the first rotary driving piece is a rotary anti-shake magnet or a rotary anti-shake coil, when the first rotary driving piece is the rotary anti-shake magnet, the second rotary driving piece is the rotary anti-shake coil, and when the first rotary driving piece is the rotary anti-shake coil, the second rotary driving piece is the rotary anti-shake magnet; after the rotating anti-shake coils are electrified, the rotating anti-shake coils and the corresponding rotating anti-shake magnets interact to generate ampere force to drive the rotor to rotate relative to the stator;
two or four first translation driving pieces are arranged in the middle of the bottom board circuit board, when the number of the first translation driving pieces is two, the two first translation driving pieces are vertically arranged, and when the number of the first translation driving pieces is four, the four first translation driving pieces are distributed in a rectangular shape;
the translation anti-shake circuit board is positioned right above the bottom board circuit board, and the translation anti-shake circuit board is connected with the bottom board circuit board through a connecting column; second translation driving parts corresponding to the first translation driving parts in number and arrangement mode are arranged on the translation anti-shake circuit board, and gaps are formed between the second translation driving parts and the corresponding first translation driving parts;
the first translation driving part is a translation anti-shake magnet or a translation anti-shake coil, when the first translation driving part is the translation anti-shake magnet, the second translation driving part is the translation anti-shake coil, and when the first translation driving part is the translation anti-shake coil, the second translation driving part is the translation anti-shake magnet; after the translation anti-shake coils are electrified, the translation anti-shake coils interact with corresponding translation anti-shake magnets to generate ampere force to drive the translation anti-shake circuit board to generate corresponding displacement change in the X direction/Y direction;
the bottom plate circuit board respectively with the module circuit board of camera module body, each rotate anti-shake coil and each translation anti-shake coil electric connection, the bottom plate circuit board is module circuit board, each rotates the power supply of anti-shake coil and each translation anti-shake coil.
Further, the bottom plate circuit board is provided with a connector.
Further, still include the safety cover, the safety cover is established outside the stator, and the lower extreme of safety cover is fixed on the bottom plate circuit board.
Furthermore, two adjacent frames or four frames of the rotor are respectively provided with a first rotating driving part.
Furthermore, two first rotating driving parts are arranged on two adjacent frames or four frames of the rotor.
Furthermore, the translation anti-shake circuit board is connected with the bottom board circuit board through four connecting columns, and the four connecting columns are distributed in a rectangular shape.
Furthermore, the connecting column is a metal column.
In a second aspect, the camera shake prevention system of the present invention comprises a control module, a gyroscope and a camera module according to the present invention;
the gyroscope is used for detecting the angular velocity information of the camera and sending the angular velocity information to the control module, and the gyroscope is electrically connected with the control module;
the control module calculates a target coil and compensation quantity based on the detected angular speed information, and sends a control instruction to the camera module based on the target coil and the compensation quantity, and the camera module is electrically connected with the control module;
the camera module controls to input current corresponding to the compensation quantity to the target coil based on the control instruction, after the target coil is electrified, if the target coil is a rotating anti-shake coil, the electrified rotating anti-shake coil and the corresponding rotating anti-shake magnet interact to generate ampere force to drive the rotor to rotate relative to the stator, and if the target coil is a translation anti-shake coil, the electrified translation anti-shake coil and the corresponding translation anti-shake magnet interact to generate ampere force to drive the translation anti-shake circuit board to generate corresponding displacement change in the X direction/Y direction.
Third aspect, a mobile terminal, include if the utility model discloses a camera module.
The utility model has the advantages of it is following:
(1) the compensation direction and the compensation amount are calculated through the detected angular speed information of the camera, so that the rotor is driven to rotate relative to the stator, and the rotor rotates and simultaneously drives the camera module body to rotate, so that the nondestructive anti-shake function is realized;
(2) calculating a compensation direction and a compensation amount according to the detected angular velocity information of the camera, so as to drive the translation anti-shake circuit board to move by a corresponding displacement amount, and driving the camera module body to move while the translation anti-shake circuit board moves, so as to realize a nondestructive anti-shake function;
(3) by adopting a module anti-shake mode, 100% of modules are integrally anti-shake in the anti-shake process, the problems of dark corners at edges, image quality loss and the like are ignored, and lossless anti-shake is realized;
(4) the camera module body moves integrally, so that the problems of dark corners, edge image quality loss and the like cannot be caused;
(5) the anti-shake integral structure of the module is effectively optimized, the integral size is reduced, the complexity of the module is reduced, and batch production is facilitated;
to sum up, the utility model discloses can realize full degree of freedom anti-shake (X promptly, Y, RX, RY direction), can shoot more clear picture.
Drawings
Fig. 1 is a schematic structural diagram of the camera module according to this embodiment (with the protective cover removed);
fig. 2 is a second schematic structural view of the camera module according to the present embodiment (with the protective cover and the stator removed);
fig. 3 is an analysis diagram of the camera module according to the embodiment;
fig. 4 is a cross-sectional view of the camera module according to the embodiment;
fig. 5 is a schematic block diagram of the camera anti-shake system according to the present embodiment;
FIG. 6 is a schematic view in the X-direction and Y-direction in the present embodiment;
FIG. 7 is a diagram showing four distributions of the translational anti-shake magnets and the translational anti-shake coils according to the embodiment;
FIG. 8 is a diagram showing the arrangement of two translational anti-shake magnets and two translational anti-shake coils in this embodiment;
in the figure: 1. the safety cover, 2, camera module body, 3, rotate the anti-shake magnetite, 4, the ball, 5, rotate the anti-shake coil, 6, the stator, 7, the welding terminal, 8, the spliced pole, 9, the bottom plate circuit board, 10, the translation anti-shake magnetite, 11, the connector, 12, first conductor wire, 13, the translation anti-shake circuit board, 14, the rotor, 15, the second conductor wire, 16, first cambered surface, 17, the second cambered surface, 18, the gyroscope, 19, control module, 20, the translation anti-shake coil.
Detailed Description
The following detailed description of the present embodiments is made with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 4, in the present embodiment, a camera module includes a camera module body 2, a stator 6, a rotor 14, a translation anti-shake circuit board 13, and a bottom board circuit board 9.
As shown in fig. 1 to 4, in this embodiment, the camera module body 2 is placed on the translational anti-shake circuit board 13, and the translational anti-shake circuit board 13 can move with the camera module body 2 while moving in the X direction or the Y direction. When the rotor 14 rotates, the rotor 14 can rotate together with the camera module body 2 relative to the stator 6.
As shown in fig. 3 and 4, in this embodiment, the rotor 14 is a square frame, the outer surface of the connecting portion of any two adjacent frames of the square frame is a first arc surface 16, and the four first arc surfaces 16 are all located on the same spherical surface; the rotor 14 is fixedly sleeved outside the camera module body 2, and two first rotation driving parts are fixedly arranged on four frames of the rotor 14 respectively. The lower end of the stator 6 is fixedly arranged on the translation anti-shake circuit board 13, and the stator 6 is sleeved outside the rotor 14; the inner side surface of the stator 6 is provided with second cambered surfaces 17 at positions corresponding to the first cambered surfaces 16, and the four second cambered surfaces 17 are positioned on the same spherical surface. A ball groove is formed in the first arc surface 16 of the rotor 14, and a ball 4 is disposed in the ball groove, and the ball 4 is interposed between the stator 6 and the rotor 14. Each inner side of the stator 6 is provided with a second rotary driving member at a position corresponding to the first rotary driving member, and a gap is formed between the second rotary driving member and the corresponding first rotary driving member.
In this embodiment, the first rotation driving part is a rotation anti-shake magnet 3, the second rotation driving part is a rotation anti-shake coil 5, and after the rotation anti-shake coil is powered on, the rotation anti-shake coil interacts with the corresponding rotation anti-shake magnet 3 to generate an ampere force which can drive the rotor 14 to rotate relative to the stator 6; that is, RX, RY direction adjustment can be achieved, where RX refers to rotation along the X axis and RY refers to rotation along the Y axis.
As shown in fig. 3 and 7, in the present embodiment, four first translation driving members are disposed in the middle of the bottom board circuit board 9, and the four first translation driving members are distributed in a rectangular shape. Translation anti-shake circuit board 13 is located bottom plate circuit board 9 directly over, and is connected through spliced pole 8 between translation anti-shake circuit board 13 and the bottom plate circuit board 9. The translation anti-shake circuit board 13 is provided with four second translation driving members corresponding to the first translation driving members in number and arrangement. The four second translation driving members and the four first translation driving members are arranged in a one-to-one correspondence manner. The two first translation driving parts located in the X direction are matched with the corresponding second translation driving parts to control the translation anti-shake circuit board 13 to move in the X direction. The two first translation driving parts positioned in the Y direction are matched with the corresponding second translation driving parts to control the translation anti-shake circuit board 13 to move in the Y direction. And a gap is formed between the second translation driving piece and the corresponding first translation driving piece.
In this embodiment, the first translational driving element is a translational anti-shake magnet 10, the second translational driving element is a translational anti-shake coil 20, and after the translational anti-shake coil 20 is powered on, the translational anti-shake coil interacts with the corresponding translational anti-shake magnet 10 to generate an ampere force, so that the translational anti-shake circuit board 13 is driven to generate a corresponding displacement change in the X direction/Y direction (see fig. 6). That is, when the detected camera shakes towards the positive direction X, a compensation amount towards the negative direction X is given, so that the anti-shake function is achieved. When the detected camera shakes towards the positive direction of Y, a compensation amount towards the negative direction of Y is given, so that the anti-shake function is achieved. When the translation anti-shake circuit board 13 moves, the camera module body 2, the stator 6 and the rotor 14 are driven to move together.
In this embodiment, the bottom plate circuit board 9 is respectively with the module circuit board of camera module body 2, each rotates anti-shake coil 5 and each translation anti-shake coil 20 electric connection, the bottom plate circuit board 9 is the module circuit board, each rotates the power supply of anti-shake coil and each translation anti-shake coil.
As shown in fig. 3, in the present embodiment, the stator 6 is provided with a solder terminal 7, and the rotation anti-shake coil and the translation anti-shake circuit board 13 are electrically connected through the solder terminal 7. The translation anti-shake circuit board 13 is powered by the bottom board circuit board 9. The translation anti-shake circuit board 13 can also be connected with the translation circuit board 13 first, and then the translation circuit board 13 is connected with the bottom board circuit board 9.
As shown in fig. 3, in this embodiment, the stator protection device further includes a protection cover 1, the protection cover 1 covers the stator 6, and a lower end of the protection cover 1 is fixed (bonded by glue) on the bottom board circuit board 9.
As shown in fig. 4, in this embodiment, the connecting column 8 is a metal column, which can support the translational anti-shake circuit board 13, the camera module body 2, the stator 6, the rotor 14, and the like, and the metal column has a certain elastic deformation capability in the X direction/the Y direction.
In this embodiment, as shown in fig. 1 to 4, a connector 11 is further disposed on the bottom board circuit board 9, and if the camera module is used in a mobile phone, the bottom board circuit board 9 is connected to a main board of the mobile phone through the connector 11, and the whole camera module is powered through the main board of the mobile phone.
As shown in fig. 3, a module circuit board of the camera module body 2 (i.e., a circuit board for controlling the operation of the motor and the photosensitive chip inside the camera module, which is a prior art and is not described herein again) is electrically connected to the bottom board circuit board 9 through a first conductive wire 12, so as to supply power to the module circuit board of the camera module body 2.
As shown in fig. 1, the translation anti-shake circuit board 13 is connected to the bottom board circuit board 9 through a second conductive wire 15, and the translation anti-shake circuit board 13 is powered through the bottom board circuit board 9.
As shown in fig. 2, the stator 6 is provided with the welding terminals 7 having the same number as that of the rotation anti-shake coils 5, the rotation anti-shake coils 5 are connected to the translation anti-shake circuit board 13 through the welding terminals 7, and the bottom board circuit board 9 supplies power to the rotation anti-shake coils 5 through the translation anti-shake circuit board 13.
In this embodiment, gold wire or other conductive metal wire that is easy to bend is used as the first conductive wire 12 and the second conductive wire 15.
In this embodiment, the rotor 14 and the camera module body 2 are bonded together by glue. The stator 6 and the rotation anti-shake coil 5 are bonded together through glue. The rotation anti-shake magnet 3 and the rotor 14 are bonded together through glue. The stator 6 and the translation anti-shake circuit board 13 are bonded together through glue.
As shown in fig. 5, in this embodiment, a camera anti-shake system includes a control module 19, a gyroscope 18, and a camera module as described in this embodiment.
The gyroscope 18 is used for detecting the angular velocity information of the camera and sending the information to the control module 19, and the gyroscope 18 is electrically connected with the control module 19.
The control module 19 calculates a target coil and a compensation amount based on the detected angular velocity information, and sends a control instruction to the camera module based on the target coil and the compensation amount, and the camera module is electrically connected with the control module 19.
The camera module controls to input current corresponding to the compensation quantity to the target coil based on the control instruction, after the target coil is electrified, if the target coil is a rotation anti-shake coil, the electrified rotation anti-shake coil and the corresponding rotation anti-shake magnet interact to generate an ampere force to drive the rotor 14 to rotate relative to the stator 6, and if the target coil is a translation anti-shake coil 20, the electrified translation anti-shake coil 20 and the corresponding translation anti-shake magnet interact to generate an ampere force to drive the translation anti-shake circuit board 13 to generate corresponding displacement change in the X direction/Y direction.
In this embodiment, if the camera module is installed on a mobile phone, the control module 19 is a main board of the mobile phone. At present, a gyroscope is generally configured on a mobile phone, and the gyroscope on the mobile phone is adopted.
In this embodiment, a mobile terminal includes the camera module described in this embodiment.
Example two
In this embodiment, a first rotation driving member is disposed on each of two adjacent frames of the rotor 14.
The rest is the same as the first embodiment.
EXAMPLE III
In this embodiment, a ball groove is formed on the second arc surface 17 of the stator 6.
The rest is the same as the first embodiment.
Example four
As shown in fig. 8, in this embodiment, two first translation driving members are disposed in the middle of the bottom board circuit board 9, and the two first translation driving members are disposed perpendicularly to each other.
The rest is the same as the first embodiment.
EXAMPLE five
In this embodiment, first rotation driving piece is for rotating anti-shake coil 5, second rotation driving piece is for rotating anti-shake magnetite 3, and rotates anti-shake coil 5's power supply mode and need carry out adaptability ground adjustment according to concrete structure.
In this embodiment, the first translational driving element is a translational anti-shake coil 20, the second translational driving element is a translational anti-shake magnet 10, and the power supply mode of the translational anti-shake coil 20 needs to be adaptively adjusted according to a specific structure.
Claims (9)
1. The utility model provides a camera module, includes camera module body (2), its characterized in that: the motor also comprises a stator (6), a rotor (14), a translation anti-shake circuit board (13) and a bottom board circuit board (9);
the camera module body (2) is placed on the translation anti-shake circuit board (13);
the rotor (14) is a square frame, the outer surface of the connecting part of any two adjacent frames of the square frame is a first cambered surface (16), and the four first cambered surfaces (16) are all positioned on the same spherical surface; the rotor (14) is fixedly sleeved outside the camera module body (2), and at least two adjacent frames of the rotor (14) are respectively and fixedly provided with a first rotating driving part;
the lower end of the stator (6) is fixedly arranged on the translation anti-shake circuit board (13), and the stator (6) is sleeved outside the rotor (14); second cambered surfaces (17) are arranged on the inner side surfaces of the stators (6) at positions corresponding to the first cambered surfaces (16), and the four second cambered surfaces (17) are positioned on the same spherical surface;
a ball groove is formed in the first cambered surface (16) of the rotor (14) or the second cambered surface (17) of the stator (6), a ball (4) is arranged in the ball groove, and the ball (4) is clamped between the stator (6) and the rotor (14);
a second rotary driving piece is arranged on the inner side of the stator (6) at a position corresponding to the first rotary driving piece, and a gap is formed between the second rotary driving piece and the corresponding first rotary driving piece;
the first rotary driving part is a rotary anti-shake magnet (3) or a rotary anti-shake coil (5), when the first rotary driving part is the rotary anti-shake magnet (3), the second rotary driving part is the rotary anti-shake coil (5), and when the first rotary driving part is the rotary anti-shake coil (5), the second rotary driving part is the rotary anti-shake magnet (3); after the rotating anti-shake coils (5) are electrified, the rotating anti-shake coils and the corresponding rotating anti-shake magnets (3) interact to generate ampere force to drive the rotor (14) to rotate relative to the stator (6);
two or four first translation driving pieces are arranged in the middle of the bottom board circuit board (9), when the number of the first translation driving pieces is two, the two first translation driving pieces are vertically arranged, and when the number of the first translation driving pieces is four, the four first translation driving pieces are distributed in a rectangular shape;
the translation anti-shake circuit board (13) is positioned right above the bottom board circuit board (9), and the translation anti-shake circuit board (13) is connected with the bottom board circuit board (9) through a connecting column (8); second translation driving parts corresponding to the first translation driving parts in number and arrangement mode are arranged on the translation anti-shake circuit board (13), and gaps are formed between the second translation driving parts and the corresponding first translation driving parts;
the first translation driving part is a translation anti-shake magnet (10) or a translation anti-shake coil (20), when the first translation driving part is the translation anti-shake magnet (10), the second translation driving part is the translation anti-shake coil (20), and when the first translation driving part is the translation anti-shake coil (20), the second translation driving part is the translation anti-shake magnet (10); after the translation anti-shake coils (20) are electrified, the translation anti-shake coils interact with corresponding translation anti-shake magnets (10) to generate ampere force to drive the translation anti-shake circuit board (13) to generate corresponding displacement change in the X direction/Y direction;
the camera module is characterized in that the bottom plate circuit board (9) is electrically connected with the module circuit board of the camera module body (2), the rotation anti-shaking coils (5) and the translation anti-shaking coils (20) respectively, and the bottom plate circuit board (9) supplies power to the module circuit board, the rotation anti-shaking coils (5) and the translation anti-shaking coils (20).
2. The camera module of claim 1, wherein: the bottom board circuit board (9) is provided with a connector (11).
3. The camera module according to claim 1 or 2, wherein: still include safety cover (1), safety cover (1) cover is established outside stator (6), and the lower extreme of safety cover (1) is fixed on bottom plate circuit board (9).
4. The camera module of claim 3, wherein: a first rotary driving part is arranged on two adjacent frames or four adjacent frames of the rotor (14).
5. The camera module of claim 1, 2 or 4, wherein: two first rotation driving parts are arranged on two adjacent frames or four frames of the rotor (14).
6. The camera module of claim 5, wherein: the translation anti-shaking circuit board (13) is connected with the bottom board circuit board (9) through four connecting columns (8), and the four connecting columns (8) are distributed in a rectangular shape.
7. The camera module of claim 6, wherein: the connecting column (8) is a metal column.
8. The utility model provides a camera anti-shake system which characterized in that: comprising a control module (19), a gyroscope (18) and a camera module according to any one of claims 1 to 7;
the gyroscope (18) is used for detecting the angular speed information of the camera and sending the information to the control module (19), and the gyroscope (18) is electrically connected with the control module (19);
the control module (19) calculates a target coil and a compensation amount based on the detected angular velocity information, and sends a control instruction to the camera module based on the target coil and the compensation amount, and the camera module is electrically connected with the control module (19);
the camera module controls current corresponding to the compensation quantity to be input into the target coil based on the control instruction, after the target coil is electrified, if the target coil is a rotating anti-shake coil, the electrified rotating anti-shake coil and a corresponding rotating anti-shake magnet interact to generate an ampere force to drive the rotor (14) to rotate relative to the stator (6), and if the target coil is a translation anti-shake coil (20), the electrified translation anti-shake coil (20) and a corresponding translation anti-shake magnet interact to generate an ampere force to drive the translation anti-shake circuit board (13) to generate corresponding displacement change in the X direction/Y direction.
9. A mobile terminal, characterized by: comprising a camera module according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021984744.9U CN212392932U (en) | 2020-09-11 | 2020-09-11 | Camera module, camera anti-shake system and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021984744.9U CN212392932U (en) | 2020-09-11 | 2020-09-11 | Camera module, camera anti-shake system and mobile terminal |
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| CN212392932U true CN212392932U (en) | 2021-01-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935386A (en) * | 2020-09-11 | 2020-11-13 | 重庆市天实精工科技有限公司 | Camera module, camera anti-shake system and method and mobile terminal |
| CN113489905A (en) * | 2021-07-08 | 2021-10-08 | 维沃移动通信有限公司 | Camera module, electronic equipment and control method of electronic equipment |
-
2020
- 2020-09-11 CN CN202021984744.9U patent/CN212392932U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111935386A (en) * | 2020-09-11 | 2020-11-13 | 重庆市天实精工科技有限公司 | Camera module, camera anti-shake system and method and mobile terminal |
| CN113489905A (en) * | 2021-07-08 | 2021-10-08 | 维沃移动通信有限公司 | Camera module, electronic equipment and control method of electronic equipment |
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