CN107483803B - Mobile terminal and method for detecting rotation state of camera - Google Patents
Mobile terminal and method for detecting rotation state of camera Download PDFInfo
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- CN107483803B CN107483803B CN201710905370.3A CN201710905370A CN107483803B CN 107483803 B CN107483803 B CN 107483803B CN 201710905370 A CN201710905370 A CN 201710905370A CN 107483803 B CN107483803 B CN 107483803B
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- 230000005484 gravity Effects 0.000 claims abstract description 89
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- 238000001514 detection method Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/58—Means for changing the camera field of view without moving the camera body, e.g. nutating or panning of optics or image sensors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/62—Control of parameters via user interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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Abstract
The invention is applicable to the technical field of mobile terminals, and provides a mobile terminal and a method for detecting the rotation state of a camera. The mobile terminal comprises a body and a rotatable camera part connected to the body, the body comprises a processor, the rotatable camera part comprises a first gravity sensor, the body comprises a second gravity sensor, and the processor is electrically connected with the first gravity sensor and the second gravity sensor respectively. The method comprises the following steps: acquiring a first vector through the first gravity sensor, and acquiring a second vector through the second gravity sensor; and calculating an included angle value of the first vector and the second vector through the processor, and determining the current rotation state of the camera according to the included angle value. The invention improves the anti-interference capability and stability of the rotation state of the detection camera and improves the accuracy of the detection result so as to avoid misoperation of the mobile terminal.
Description
Technical Field
The invention belongs to the technical field of mobile terminals, and particularly relates to a mobile terminal and a method for detecting a rotation state of a camera.
Background
The mobile terminal with the rotary camera fixes the rotary camera on the mobile terminal through a rotating shaft so as to realize the rotation of the rotary camera within a certain angle range. The mobile terminal with the rotary camera can realize the function of photographing front and back of the mobile terminal only by one camera, and meanwhile, the front camera is provided with high pixels which are the same as those of the rear camera, so that the photographing experience of the front camera is improved. When the mobile terminal with the rotary camera uses the camera, the rotation state of the camera needs to be judged. The prior art generally detects the rotation state of the camera by matching a Hall device with a magnet. However, when a magnetic substance is close to the mobile terminal, a wrong detection result of the rotation state of the camera is likely to be obtained through the hall device and the magnet, which results in misoperation of the mobile terminal.
Disclosure of Invention
In view of this, embodiments of the present invention provide a mobile terminal and a method for detecting a rotation state of a camera, so as to solve the problems of poor anti-interference capability and low detection accuracy when the existing mobile terminal detects the rotation state of the camera.
In one aspect, an embodiment of the present invention provides a mobile terminal, where the mobile terminal includes a body and a rotatable camera component connected to the body, the body includes a processor, the rotatable camera component includes a first gravity sensor, the body includes a second gravity sensor, and the processor is electrically connected to the first gravity sensor and the second gravity sensor respectively;
the first gravity sensor is used for acquiring a first vector, the second gravity sensor is used for acquiring a second vector, and the processor is used for calculating an included angle value between the first vector and the second vector and determining the current rotation state of the camera according to the included angle value;
and the processor is also used for setting a camera interface according to the current rotation state of the camera after determining the current rotation state of the camera according to the included angle value.
In a second aspect, an embodiment of the present invention provides a method for detecting a rotation state of a camera, where the method is applied to the mobile terminal provided in the first aspect, and the method includes:
acquiring a first vector through the first gravity sensor, and acquiring a second vector through the second gravity sensor;
calculating an included angle value between the first vector and the second vector through the processor, and determining the current rotation state of the camera according to the included angle value;
after determining the current rotation state of the camera according to the included angle value, the method further includes: and setting a camera interface according to the current rotation state of the camera.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: according to the embodiment of the invention, the first gravity sensor is added in the rotatable camera component of the mobile terminal, the first vector is obtained through the first gravity sensor, the second vector is obtained through the second gravity sensor, the included angle value between the camera and the specified direction is determined by calculating the included angle value between the first vector and the second vector, and the current rotation state of the camera is determined according to the included angle value, so that the anti-interference capability and the stability of the rotation state of the camera detected by the mobile terminal are improved, the accuracy of the detection result is improved, and the misoperation of the mobile terminal is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 3 is a flowchart of an implementation of a method for detecting a rotation state of a camera according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 shows a block diagram of a mobile terminal according to an embodiment of the present invention. For convenience of explanation, only the portions related to the present embodiment are shown. Referring to fig. 1, the mobile terminal includes a body 11, and a rotatable camera part 12 connected to the body. The body 11 includes a processor 111, the rotatable camera component 12 includes a first gravity sensor 121, the body 11 includes a second gravity sensor 112, and the processor 111 is electrically connected to the first gravity sensor 121 and the second gravity sensor 111, respectively.
The first gravity sensor 121 is configured to obtain a first vector, the second gravity sensor 112 is configured to obtain a second vector, and the processor 111 is configured to calculate an included angle value between the first vector and the second vector, and determine a current rotation state of the camera according to the included angle value.
The processor 111 is further configured to set a camera interface according to the current rotation state of the camera after determining the current rotation state of the camera according to the included angle value.
In the present embodiment, the first gravity sensor 121 is in the rotatable camera part 12. If the mobile terminal is equipped with a gravity sensor, the second gravity sensor 112 may be a gravity sensor of the mobile terminal. If the mobile terminal does not have a gravity sensor, a second gravity sensor 112 may be added to the body 11. For example, the second gravity sensor 112 is in a main board of the mobile terminal.
Preferably, the rotatable camera component 12 further includes a magnet 122, the body 11 further includes a magnetic sensor 113, the magnet 122 is magnetically connected to the magnetic sensor 113, and the magnetic sensor 113 is electrically connected to the processor 111.
The magnetic sensor 113 may be a switch type hall sensor, a linear type hall sensor, or other sensors, which are not limited herein.
Fig. 2 shows a schematic structural diagram of a mobile terminal provided in an embodiment of the present invention. For convenience of illustration, in fig. 2, the connection relationship between the respective components is not drawn. Wherein the magneto sensor 113 may be above the screen.
According to the embodiment of the invention, the first gravity sensor is added in the rotatable camera component of the mobile terminal, the first vector is obtained through the first gravity sensor, the second vector is obtained through the second gravity sensor, the included angle value between the camera and the specified direction is determined by calculating the included angle value between the first vector and the second vector, and the current rotation state of the camera is determined according to the included angle value, so that the anti-interference capability and the stability of the rotation state of the camera detected by the mobile terminal are improved, the accuracy of the detection result is improved, and the misoperation of the mobile terminal is avoided.
Fig. 3 shows a flowchart of an implementation of a method for detecting a rotation state of a camera according to an embodiment of the present invention, where an execution subject of the method may be the mobile terminal in fig. 1 or fig. 2. Referring to fig. 3:
in step S301, a first vector is obtained by the first gravity sensor, and a second vector is obtained by the second gravity sensor.
Further, the step S301 of acquiring a first vector by the first gravity sensor and acquiring a second vector by the second gravity sensor includes:
acquiring an x-axis first gravitational acceleration component gx1, a y-axis first gravitational acceleration component gy1 and a z-axis first gravitational acceleration component gz1 through the first gravity sensor to obtain the first vector (gx1, gy1, gz 1);
acquiring an x-axis second gravitational acceleration component gx2, a y-axis second gravitational acceleration component gy2 and a z-axis second gravitational acceleration component gz2 through the second gravity sensor to obtain the second vector (gx2, gy2, gz 2).
As an embodiment of the present invention, a y-axis of the second gravity sensor is parallel to a long side of the screen of the mobile terminal, and a positive direction of the y-axis is directed from a top end to a bottom end of the long side of the screen of the mobile terminal, wherein the top end of the long side of the screen of the mobile terminal refers to the top end of the long side of the screen of the mobile terminal when the mobile terminal is upright, and the bottom end of the long side of the screen of the mobile terminal refers to the bottom end of the long side of the screen of the mobile; the z axis is vertical to the screen of the mobile terminal, and the forward direction of the z axis is directed to the screen of the mobile terminal by the rear shell of the mobile terminal; the x axis is parallel to the short edge of the screen of the mobile terminal, and the positive direction of the x axis is directed from the left end of the screen to the right end of the screen when the mobile terminal is upright.
The included angle value of the first vector and the second vector is equal to the included angle value of the camera and the appointed direction. The designated direction is the z-axis negative direction. When the included angle value between the camera and the designated direction is 0 degree, the camera in the embodiment is equivalent to a rear camera in a mobile terminal without a rotary camera; when the angle between the camera and the designated direction is 180 degrees, the camera in this embodiment is equivalent to a front camera in a mobile terminal without a rotating camera.
The x-axis of the first gravity sensor is always parallel to the x-axis of the second gravity sensor, and the positive direction of the x-axis of the first gravity sensor is always the same as that of the x-axis of the second gravity sensor. When the included angle value between the camera and the designated direction is 0 degree, the y axis of the first gravity sensor is parallel to the y axis of the second gravity sensor, the positive direction of the y axis of the first gravity sensor is the same as the positive direction of the y axis of the second gravity sensor, the z axis of the first gravity sensor is parallel to the z axis of the second gravity sensor, and the positive direction of the z axis of the first gravity sensor is the same as the positive direction of the z axis of the second gravity sensor.
In step S302, an included angle value between the first vector and the second vector is calculated by the processor, and a current rotation state of the camera is determined according to the included angle value.
In the embodiment of the invention, the rotation state of the camera comprises a front-mounted state and a rear-mounted state.
For example, when the angle value belongs to (270 °, 360 °) ∪ [0 °, 90 ° ], the current rotation state of the camera is determined to be the rear state, and when the angle value belongs to (90 °, 270 ° ], the current rotation state of the camera is determined to be the front state.
Further, the step S302 of calculating, by the processor, an included angle between the first vector and the second vector specifically includes:
calculating, by the processor, an included angle value of the first vector and the second vector, the
The x-axis of the first gravity sensor is always parallel to the x-axis of the second gravity sensor, and the x-axis forward direction of the first gravity sensor is always the same as the x-axis forward direction of the second gravity sensor, so gx1 and gx2 are always the same.
For example, when gx2＝0，gy2＝g，gz2＝0，gx1＝0，
At this time, the process of the present invention,
namely, the included angle between the camera and the designated direction is 60 degrees.
In step S303, a camera interface is set according to the current rotation state of the camera.
Optionally, after determining, by the processor, a current rotation state of the camera according to the included angle value in step S302, the method further includes: and setting a camera interface according to the current rotation state of the camera. For example, if the current rotation state of the camera is the forward state, the flash function is shielded. In addition, the image acquired by the camera is turned over according to the current rotation state of the camera, so that the image is kept in an upright state.
Further, after determining, by the processor, a current rotation state of the camera according to the included angle value in step S302, the method further includes:
and storing the rotation state through the processor so as to determine the next rotation state according to the rotation state and the included angle value obtained by the next calculation.
Further, the determining the next rotation state according to the rotation state and the included angle value obtained by the next calculation includes:
when the rotation state is a post state, if the included angle value obtained by the next calculation is within a first preset interval, judging that the next rotation state is the post state; if the included angle value obtained by the next calculation is not in the first preset interval, judging that the next rotation state is a preposed state;
when the rotation state is a preposed state, if the included angle value obtained by the next calculation is in a second preset interval, determining that the next rotation state is the preposed state; and if the included angle value obtained by the next calculation is not in the second preset interval, judging that the next rotation state is a post state.
For example, the first preset interval is (270 °, 360 °) ∪ [0 °, 90 ° ], and the second preset interval is (90 °, 270 ° ].
As another example, the first predetermined interval is (270 °, 360 °) ∪ [0 °, 120 ° ], and the second predetermined interval is (60 °, 270 ° ].
As another example, the first preset interval is (225 °, 360 °) ∪ [0 °, 120 ° ], and the second preset interval is (60 °, 315 ° ].
Preferably, an intersection of the first preset interval and the second preset interval is a non-empty set.
For example, the first preset interval is (270 °, 360 °) ∪ [0 °, 120 ° ], and the second preset interval is (60 °, 270 ° ].
Preferably, in step S301, the obtaining a first vector by the first gravity sensor, and the obtaining a second vector by the second gravity sensor specifically include:
when the fact that the magnetic sensor outputs a preset value to the processor is detected, the processor triggers the first gravity sensor to obtain a first vector, and the second gravity sensor obtains a second vector.
As an embodiment of the present invention, when the magnetic sensor outputs a preset value, an interrupt is triggered, so that a Central Processing Unit (CPU) of the mobile terminal further determines whether a current rotation state of the camera is equivalent to a rotation state determined last time, through the first gravity sensor and the second gravity sensor. In the embodiment of the invention, only when the magnetic sensor outputs the preset value, the CPU of the mobile terminal further judges whether the current rotation state of the camera is equal to the rotation state determined last time or not through the first gravity sensor and the second gravity sensor, thereby reducing the load of the CPU.
In the embodiment of the invention, the first gravity sensor, the second gravity sensor, the magnetic sensor and the magnet are combined to detect the rotation state of the camera, so that the detection accuracy is improved.
It should be understood that, in the embodiment of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.
According to the embodiment of the invention, the first gravity sensor is added in the rotatable camera component of the mobile terminal, the first vector is obtained through the first gravity sensor, the second vector is obtained through the second gravity sensor, the included angle value between the camera and the specified direction is determined by calculating the included angle value between the first vector and the second vector, and the current rotation state of the camera is determined according to the included angle value, so that the anti-interference capability and the stability of the rotation state of the camera detected by the mobile terminal are improved, the accuracy of the detection result is improved, and the misoperation of the mobile terminal is avoided.
Those of ordinary skill in the art will appreciate that the various illustrative algorithmic steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of each component of the mobile terminal described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A mobile terminal comprises a body and a rotatable camera part connected with the body, wherein the body comprises a processor, the rotatable camera part comprises a first gravity sensor, the body comprises a second gravity sensor, and the processor is electrically connected with the first gravity sensor and the second gravity sensor respectively;
the first gravity sensor is used for acquiring a first vector, the second gravity sensor is used for acquiring a second vector, and the processor is used for calculating an included angle value between the first vector and the second vector and determining the current rotation state of the camera according to the included angle value;
the processor is further used for setting a camera interface according to the current rotation state of the camera after determining the current rotation state of the camera according to the included angle value;
the rotatable camera part further comprises a magnet, the body further comprises a magnetic sensor, the magnetic sensor is magnetically connected with the magnet and electrically connected with the processor, and the magnetic sensor is used for triggering interruption when a preset value is output, so that the processor of the mobile terminal judges whether the current rotation state of the camera changes compared with the last determined rotation state or not through the first gravity sensor and the second gravity sensor.
2. A method for detecting a rotation state of a camera, applied to the mobile terminal according to claim 1, the method comprising:
acquiring a first vector through the first gravity sensor, and acquiring a second vector through the second gravity sensor;
calculating an included angle value between the first vector and the second vector through the processor, and determining the current rotation state of the camera according to the included angle value;
after determining the current rotation state of the camera according to the included angle value, the method further includes: and setting a camera interface according to the current rotation state of the camera.
3. The method of claim 2, wherein the acquiring a first vector by the first gravity sensor and a second vector by the second gravity sensor comprises:
acquiring a first gravity acceleration component g of an x axis through the first gravity sensorx1Y-axis first gravitational acceleration component gy1And a z-axis first gravitational acceleration component gz1Obtaining the first vector ═ (g)x1，gy1，gz1)；
Acquiring a second gravity acceleration component g of the x axis through the second gravity sensorx2Y-axis second gravitational acceleration component gy2And z-axis second gravitational acceleration component gz2Obtaining the second vector ═ gx2，gy2，gz2)；
The calculating, by the processor, an included angle value between the first vector and the second vector specifically includes:
calculating, by the processor, an included angle value of the first vector and the second vector, the
4. The method of claim 2, wherein after determining, by the processor, a current rotational state of the camera from the angle value, the method further comprises:
and storing the rotation state through the processor so as to determine the next rotation state according to the rotation state and the included angle value obtained by the next calculation.
5. The method of claim 4, wherein determining the next rotation state based on the rotation state and the angle value obtained from the next calculation comprises:
when the rotation state is a post state, if the included angle value obtained by the next calculation is within a first preset interval, judging that the next rotation state is the post state; if the included angle value obtained by the next calculation is not in the first preset interval, judging that the next rotation state is a preposed state;
when the rotation state is a preposed state, if the included angle value obtained by the next calculation is in a second preset interval, determining that the next rotation state is the preposed state; and if the included angle value obtained by the next calculation is not in the second preset interval, judging that the next rotation state is a post state.
6. The method of claim 5, wherein an intersection of the first predetermined interval and the second predetermined interval is a non-empty set.
7. The method of claim 2, wherein the obtaining a first vector by the first gravity sensor and a second vector by the second gravity sensor are specifically:
when the fact that the magnetic sensor outputs a preset value to the processor is detected, the processor triggers the first gravity sensor to obtain a first vector, and the second gravity sensor obtains a second vector.
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| CN201710905370.3A CN107483803B (en) | 2014-12-23 | 2014-12-23 | Mobile terminal and method for detecting rotation state of camera |
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| CN201410817325.9A CN104469165B (en) | 2014-12-23 | 2014-12-23 | Mobile terminal and the method for detecting camera rotation status |
| CN201710905370.3A CN107483803B (en) | 2014-12-23 | 2014-12-23 | Mobile terminal and method for detecting rotation state of camera |
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| CN104699391B (en) * | 2015-04-07 | 2018-10-12 | 联想(北京)有限公司 | The control method of electronic equipment and its camera |
| CN105357365A (en) * | 2015-09-28 | 2016-02-24 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN109214242A (en) * | 2017-07-03 | 2019-01-15 | 中兴通讯股份有限公司 | Sensing data acquisition methods, device, system and computer readable storage medium |
| CN107920206A (en) * | 2017-12-08 | 2018-04-17 | 上海与德科技有限公司 | A kind of image pickup method, filming apparatus and terminal |
| CN108670181A (en) * | 2018-07-02 | 2018-10-19 | 苏州兆乘四海通科技有限公司 | A kind of oral cavity microscope equipment |
| CN111953866B (en) * | 2019-05-15 | 2021-11-26 | 华硕电脑股份有限公司 | Electronic device |
| US11477385B2 (en) | 2019-05-15 | 2022-10-18 | Asustek Computer Inc. | Electronic device with rotatable camera for protecting privacy |
| US11375125B2 (en) | 2019-05-15 | 2022-06-28 | Asustek Computer Inc. | Electronic device |
| US11240357B2 (en) | 2019-05-15 | 2022-02-01 | Asustek Computer Inc. | Electronic device |
| US11546451B2 (en) | 2019-05-15 | 2023-01-03 | Asustek Computer Inc. | Electronic device |
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| CN103500007A (en) * | 2013-09-27 | 2014-01-08 | 深圳市金立通信设备有限公司 | Method for determining rotation angle of rotating member of terminal and terminal |
| CN104023105A (en) * | 2014-06-13 | 2014-09-03 | 广东欧珀移动通信有限公司 | Detection device and detection method of angled rotation of camera of mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104469165A (en) | 2015-03-25 |
| CN104469165B (en) | 2017-11-07 |
| CN107483803A (en) | 2017-12-15 |
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