WO2017107703A1 - 一种实现对焦的方法和装置 - Google Patents

一种实现对焦的方法和装置 Download PDF

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Publication number
WO2017107703A1
WO2017107703A1 PCT/CN2016/105751 CN2016105751W WO2017107703A1 WO 2017107703 A1 WO2017107703 A1 WO 2017107703A1 CN 2016105751 W CN2016105751 W CN 2016105751W WO 2017107703 A1 WO2017107703 A1 WO 2017107703A1
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Prior art keywords
lens
focus
driving force
distance
moving direction
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English (en)
French (fr)
Inventor
张亮
姬向东
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Nubia Technology Co Ltd
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Nubia Technology Co Ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing

Definitions

  • This document relates to, but is not limited to, mobile terminal technology, and more particularly to a method and apparatus for achieving focus.
  • the optional methods for achieving focusing generally include:
  • a manual focus command from the user is received, and the driving force applied to the lens is calculated according to the focus distance in the manual focus command, and the calculated driving force is generated to push the lens.
  • the driving force for pushing the lens is the calculated force of the superimposed driving force and gravity, that is, even the calculated driving force.
  • the force that is ultimately used to push the lens will vary depending on the direction of the shot.
  • the position of the adjusted lens will vary with the direction of the shot, which in turn causes problems with inaccurate focus in some shooting directions.
  • Embodiments of the present invention provide a method and apparatus for achieving focus, which can ensure focus accuracy in different shooting directions.
  • An embodiment of the present invention provides an apparatus for implementing focus, including:
  • a receiving module configured to receive a focus command, where the focus command includes a focus distance
  • a calculation module configured to calculate a pre-driving force applied to the lens according to the focus distance in the focus command; calculate the pre-driving force and the obtained gravity component according to the calculated The driving force.
  • the receiving module is configured to receive a manual focus command from a user.
  • the obtaining module is configured to:
  • the device further includes:
  • the obtaining module is set to:
  • the setting module is set to:
  • k is a coefficient corresponding to the focus distance
  • F2 is a driving force that needs to be generated when the lens focuses on the focus distance and is photographed vertically
  • F1 is that the lens focuses on the focus distance and shoots vertically downward.
  • the driving force that needs to be generated, G2 is the gravitational acceleration received when the lens is photographed vertically upward
  • G1 is the gravitational acceleration received when the lens is photographed vertically downward.
  • the computing module is configured to:
  • the pre-driving force applied to the lens is calculated according to the focusing distance in the focus command; and the difference between the pre-driving force and the obtained gravitational component force is calculated to obtain the driving force.
  • the receiving module is configured to receive a manual focus command from a user by:
  • a manual focus command from the user is received by sensing physical buttons or virtual buttons being clicked or double clicked, or by sensing a graphic mapped onto the touch screen.
  • the gravitational acceleration of the lens in the moving direction when shooting upwards, the gravitational acceleration of the lens in the moving direction is a negative value; when shooting down, the gravitational acceleration of the lens in the moving direction is positive.
  • the acquiring module is configured to obtain the gravity acceleration received by the lens in the moving direction by:
  • a gravity sensor is used to obtain the acceleration of gravity that the lens is subjected to in the moving direction.
  • the device further includes:
  • the pushing module is configured to push the lens to the focus position by using the calculated driving force for pushing the lens to focus.
  • the embodiment of the invention further provides a method for achieving focus, comprising:
  • the driving force for pushing the lens to focus is calculated based on the calculated pre-driving force and the obtained gravitational component force.
  • receiving the focus command includes:
  • the gravity component of the acquiring lens in the moving direction includes:
  • calculating the pre-driving force applied to the lens according to the focus distance in the focus command further includes: pre-acquiring a correspondence between the focus distance and the coefficient;
  • the acquiring coefficient includes: searching for a focusing distance in the focus instruction in the correspondence relationship Corresponding coefficient.
  • the correspondence between the pre-acquisition focus distance and the coefficient includes:
  • k is a coefficient corresponding to the focus distance
  • F2 is a driving force that needs to be generated when the lens focuses on the focus distance and is photographed vertically
  • F1 is that the lens focuses on the focus distance and shoots vertically downward.
  • the driving force that needs to be generated, G2 is the gravitational acceleration received when the lens is photographed vertically upward
  • G1 is the gravitational acceleration received when the lens is photographed vertically downward.
  • the calculating the driving force for pushing the lens focus according to the calculated pre-driving force and the obtained gravity component comprises:
  • Calculating a difference between the pre-driving force and the gravitational component force obtains the driving force.
  • the implementation receives manual focus commands from the user, including:
  • a manual focus command from the user is received by sensing physical buttons or virtual buttons being clicked or double clicked, or by sensing a graphic mapped onto the touch screen.
  • the gravitational acceleration of the lens in the moving direction when shooting upwards, the gravitational acceleration of the lens in the moving direction is a negative value; when shooting down, the gravitational acceleration of the lens in the moving direction is positive.
  • acquiring the acceleration of gravity received by the lens in the moving direction includes:
  • a gravity sensor is used to obtain the acceleration of gravity that the lens is subjected to in the moving direction.
  • the method further includes:
  • the calculated driving force for pushing the lens focus is used to push the lens to the focus position.
  • Embodiments of the present invention include a receiving module configured to receive a manual focus command from a user; an acquisition module configured to acquire a gravity component received by the lens in a moving direction; and a calculation module configured to apply the focus distance according to the manual focus command
  • the pre-driving force of the lens; the driving force for pushing the lens to focus is calculated based on the calculated pre-driving force and the obtained gravitational component force.
  • the driving force for pushing the lens focus is calculated according to the calculated pre-driving force and the obtained gravity component, thereby eliminating the influence of gravity on the focusing of different shooting directions, and ensuring different Focusing accuracy in the shooting direction.
  • FIG. 1 is a schematic structural diagram of hardware of a mobile terminal that implements various embodiments of the present invention
  • FIG. 2 is a schematic diagram of a wireless communication system of the mobile terminal shown in FIG. 1;
  • FIG. 3 is a schematic structural diagram of an apparatus for implementing focusing according to an embodiment of the present invention.
  • FIG. 4 is a flow chart of a method for achieving focus according to an embodiment of the present invention.
  • the mobile terminal can be implemented in various forms.
  • the terminal described in the embodiments of the present invention may include, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (Personal Digital Assistant), a PAD (Tablet), a PMP (Portable Multimedia Player), a navigation device Mobile terminals of the like and fixed terminals such as digital TVs, desktop computers, and the like.
  • PDA Personal Digital Assistant
  • PAD Tablett
  • PMP Portable Multimedia Player
  • FIG. 1 is a schematic diagram showing the hardware structure of a mobile terminal embodying various embodiments of the present invention.
  • the mobile terminal 100 may include a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, a controller 180, a power supply unit 190, and the like.
  • Figure 1 illustrates a mobile terminal having various components, but it should be understood that not all illustrated components are required to be implemented. More or fewer components can be implemented instead. The elements of the mobile terminal will be described in detail below.
  • the user input unit 130 may generate key input data according to a command input by the user to control various operations of the mobile terminal.
  • the user input unit 130 allows the user to input various types of information and can These include keyboards, pans, touch pads (eg, touch sensitive components that detect changes in resistance, pressure, capacitance, etc. due to contact), scroll wheels, rockers, and the like.
  • touch pads eg, touch sensitive components that detect changes in resistance, pressure, capacitance, etc. due to contact
  • scroll wheels e.g, scroll wheels, rockers, and the like.
  • rockers e.g, rockers, and the like.
  • the sensing unit 140 detects the current state of the mobile terminal 100 (eg, the open or closed state of the mobile terminal 100), the location of the mobile terminal 100, the presence or absence of contact (ie, touch input) by the user with the mobile terminal 100, and the mobile terminal.
  • the sensing unit 140 can sense whether the slide type phone is turned on or off.
  • the sensing unit 140 can detect whether the power supply unit 190 provides power or whether the interface unit 170 is coupled to an external device.
  • Sensing unit 140 may include proximity sensor 1410 which will be described below in connection with a touch screen.
  • the output unit 150 may include a display unit 151 and the like.
  • the display unit 151 can display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 can display a user interface (UI) or a graphical user interface (GUI) related to a call or other communication (eg, text messaging, multimedia file download, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or image and related functions, and the like.
  • UI user interface
  • GUI graphical user interface
  • the display unit 151 can function as an input device and an output device.
  • the display unit 151 may include at least one of a liquid crystal display (LCD), a thin film transistor LCD (TFT-LCD), an organic light emitting diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like.
  • LCD liquid crystal display
  • TFT-LCD thin film transistor LCD
  • OLED organic light emitting diode
  • a flexible display a three-dimensional (3D) display, and the like.
  • 3D three-dimensional
  • Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as a transparent display, and a typical transparent display may be, for example, a TOLED (Transparent Organic Light Emitting Diode) display or the like.
  • TOLED Transparent Organic Light Emitting Diode
  • the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown) .
  • the touch screen can be set to detect touch input pressure as well as touch input position and touch input area.
  • the memory 160 may store a software program or the like for processing and control operations performed by the controller 180, or may temporarily store data (for example, a phone book, a message, a still image, a video, etc.) that has been output or is to be output. Moreover, the memory 160 can store information about when a touch is applied to the touch screen When outputting various ways of vibration and audio signal data.
  • the memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (eg, SD or DX memory, etc.), a random access memory (RAM), a static random access memory ( SRAM), read only memory (ROM), electrically erasable programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic memory, magnetic disk, optical disk, and the like.
  • the mobile terminal 100 can cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
  • the controller 180 typically controls the overall operation of the mobile terminal. For example, the controller 180 performs the control and processing associated with voice calls, data communications, video calls, and the like. Additionally, the controller 180 can include a multimedia module 1810 that is configured to reproduce (or play back) multimedia data, and the multimedia module 1810 can be constructed within the controller 180 or can be configured to be separate from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
  • the power supply unit 190 receives external power or internal power under the control of the controller 180 and provides appropriate power required to operate the various components and components.
  • the various embodiments described herein can be implemented in a computer readable medium using, for example, computer software, hardware, or any combination thereof.
  • the embodiments described herein may be through the use of application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays ( An FPGA, a processor, a controller, a microcontroller, a microprocessor, at least one of the electronic units designed to perform the functions described herein, in some cases, such an embodiment may be at the controller 180 Implemented in the middle.
  • implementations such as procedures or functions may be implemented with separate software modules that permit the execution of at least one function or operation.
  • the software code can be implemented by a software application (or program) written in any suitable programming language, which can be stored in memory 160 and executed by
  • the mobile terminal has been described in terms of its function.
  • a slide type mobile terminal among various types of mobile terminals such as a folding type, a bar type, a swing type, a slide type mobile terminal, and the like will be described as an example. Therefore, the embodiment of the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
  • the mobile terminal 100 as shown in FIG. 1 may be configured to utilize data transmitted via a frame or a packet. It operates such as wired and wireless communication systems as well as satellite based communication systems.
  • a communication system in which a mobile terminal is operable according to an embodiment of the present invention will now be described with reference to FIG.
  • Such communication systems may use different air interfaces and/or physical layers.
  • air interfaces used by communication systems include, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)). ), Global System for Mobile Communications (GSM), etc.
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • CDMA Code Division Multiple Access
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • GSM Global System for Mobile Communications
  • the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
  • a CDMA wireless communication system can include a plurality of mobile terminals 100, a plurality of base stations (BS) 270, a base station controller (BSC) 275, and a mobile switching center (MSC) 280.
  • the MSC 280 is configured to interface with a public switched telephone network (PSTN) 290.
  • PSTN public switched telephone network
  • the MSC 280 is also configured to interface with a BSC 275 that can be coupled to the base station 270 via a backhaul line.
  • the backhaul line can be constructed in accordance with any of a number of well known interfaces including, for example, E1/T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. It will be appreciated that the system as shown in FIG. 2 may include multiple BSC 2750s.
  • Each BS 270 can serve one or more partitions (or regions), each of which is covered by a multi-directional antenna or an antenna directed to a particular direction radially away from the BS 270. Alternatively, each partition may be covered by two or more antennas that are set to receive diversity. Each BS 270 can be configured to support multiple frequency allocations, and each frequency allocation has a particular frequency spectrum (eg, 1.25 MHz, 5 MHz, etc.).
  • BS 270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology.
  • BTS Base Transceiver Subsystem
  • the term "base station” can be used to generally refer to a single BSC 275 and at least one BS 270.
  • a base station can also be referred to as a "cell station.”
  • each partition of a particular BS 270 may be referred to as a plurality of cellular stations.
  • a broadcast transmitter (BT) 295 transmits a broadcast signal to the mobile terminal 100 operating within the system.
  • a broadcast receiving module 111 as shown in FIG. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295.
  • GPS Global Positioning System
  • the satellite 300 helps locate at least one of the plurality of mobile terminals 100.
  • a plurality of satellites 300 are depicted, but it is understood that useful positioning information can be obtained using any number of satellites.
  • the GPS module 115 as shown in Figure 1 is typically configured to cooperate with the satellite 300 to obtain desired positioning information.
  • Alternative to GPS tracking technology or in addition to GPS tracking technology To use other techniques that can track the location of the mobile terminal.
  • at least one GPS satellite 300 can selectively or additionally process satellite DMB transmissions.
  • BS 270 receives reverse link signals from various mobile terminals 100.
  • Mobile terminal 100 typically participates in calls, messaging, and other types of communications.
  • Each reverse link signal received by a particular base station 270 is processed within a particular BS 270.
  • the obtained data is forwarded to the relevant BSC 275.
  • the BSC provides call resource allocation and coordinated mobility management functions including a soft handoff procedure between the BSs 270.
  • the BSC 275 also routes the received data to the MSC 280, which provides additional routing services for interfacing with the PSTN 290.
  • PSTN 290 interfaces with MSC 280, which forms an interface with BSC 275, and BSC 275 controls BS 270 accordingly to transmit forward link signals to mobile terminal 100.
  • an embodiment of the present invention provides an apparatus for implementing focusing, including:
  • the receiving module 301 is configured to receive a focus command, where the focus command includes a focus distance;
  • the obtaining module 302 is configured to acquire a gravity component of the lens in a moving direction
  • the calculation module 303 is configured to calculate a pre-driving force applied to the lens according to the focusing distance in the focus command; and calculate a driving force for pushing the lens to focus according to the calculated pre-driving force and the obtained gravity component.
  • the receiving module is configured to receive a manual focus command from a user.
  • the obtaining module is configured to:
  • the product between the gravitational acceleration and the coefficient is calculated to obtain the gravitational component of the lens in the direction of movement.
  • the get module is set to:
  • the setting module is set to:
  • k is a coefficient corresponding to a focus distance
  • F2 is a driving force that needs to be generated when the lens focuses on the focus distance and is photographed vertically
  • F1 is a drive that needs to be generated when the lens focuses on the focus distance and shoots vertically downward.
  • Force, G2 is the acceleration of gravity when the lens is shot vertically upwards
  • G1 is the acceleration of gravity when the lens is photographed vertically downward.
  • F2 and F1 can be obtained by pre-measurement by experiments.
  • the calculation module is set to:
  • the pre-driving force applied to the lens is calculated according to the focusing distance in the focus command; the difference between the pre-driving force and the obtained gravity component is calculated to obtain the driving force.
  • the device further includes:
  • the pushing module is configured to push the lens to the focus position by using the calculated driving force for pushing the lens to focus.
  • the receiving module in the device for implementing focusing may be disposed in the user input unit 130 in FIG. 1, and the computing module may be disposed in the controller 180 in FIG. In the sensing unit 140 and the controller 180 in FIG.
  • an embodiment of the present invention further provides a method for implementing focus, including:
  • Step 400 Receive a focus command from a user, and calculate a pre-driving force applied to the lens according to the focus distance in the focus command.
  • a manual focus command from the user is received
  • the user can input a focus command by clicking or double clicking a physical button or a virtual button, or a touch gesture, and the focus command includes a focus distance. For example, by sliding the focus distance bar displayed on the touch screen to a focus distance.
  • the focus command from the user can be received by sensing that the physical button or virtual button is clicked or double clicked, or by sensing a graphic mapped onto the touch screen.
  • Step 401 Acquire a gravity component that the lens receives in the moving direction.
  • the gravitational force component of the lens in the moving direction is:
  • a gravity sensor can be used to obtain the acceleration of gravity received by the lens in the moving direction.
  • the gravity sensor utilizes the characteristics of internal deformation (such as crystal, capacitance, etc.) caused by acceleration, and the gravitational acceleration is obtained by measuring the deformation amount and converting it into a voltage output by the relevant circuit.
  • internal deformation such as crystal, capacitance, etc.
  • the gravity acceleration of the lens obtained by the gravity sensor in the moving direction is a negative value; when the downward shooting, the gravity acceleration obtained by the gravity sensor is positive in the moving direction. .
  • Step 402 Calculate a driving force for pushing the lens to focus according to the calculated pre-driving force and the obtained gravity component.
  • the driving force for pushing the lens focus according to the calculated pre-driving force and the obtained gravity component includes:
  • Calculating the difference between the driving force and the obtained gravitational component force obtains a driving force.
  • the method further includes: pre-acquiring a correspondence between a focus distance and a coefficient;
  • Obtaining the coefficient in step 401 includes: searching for a coefficient corresponding to the focus distance in the focus command in the correspondence relationship.
  • the pre-acquisition relationship between the focus distance and the coefficient includes:
  • k is a coefficient corresponding to a focus distance
  • F2 is a driving force that needs to be generated when the lens focuses on the focus distance and is photographed vertically
  • F1 is that the lens is focused to the focus distance and is vertically oriented.
  • the driving force that needs to be generated when shooting down, G2 is the acceleration of gravity when the lens is shot vertically, and G1 is the acceleration of gravity when the lens is shot vertically downward.
  • F2 and F1 can be obtained by pre-measurement by experiments.
  • the method further includes:
  • the calculated driving force for pushing the lens focus is used to push the lens to the focus position.
  • a driving force such as a voice coil motor can be used to push the lens to the focus position.
  • the driving force for pushing the lens focus is calculated according to the calculated pre-driving force and the obtained gravity component, thereby eliminating the influence of gravity on the focusing of different shooting directions, and ensuring different shooting directions. Focusing accuracy.
  • the above technical solution eliminates the influence of gravity on the focusing of different shooting directions, and ensures the focusing accuracy of different shooting directions.

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Abstract

一种实现对焦的方法和装置，包括：接收模块（301），设置为接收到来自用户的手动对焦指令；获取模块（302），设置为获取镜头在移动方向所受到的重力分力；计算模块（303），根据手动对焦指令中的对焦距离计算施加给镜头的预驱动力；根据计算得到的预驱动力和获得的重力分力计算设置为推动镜头对焦的驱动力。由于消除了在不同拍摄方向下重力对对焦产生的影响，提高了不同拍摄方向的对焦精度。

Description

一种实现对焦的方法和装置 技术领域
本文涉及但不限于移动终端技术，尤指一种实现对焦的方法和装置。
背景技术
目前大多数移动终端在拍照、录影时都具备对焦功能，可选的实现对焦的方法大致包括：
接收到来自用户的手动对焦指令，根据手动对焦指令中的对焦距离计算施加给镜头的驱动力，产生计算得到的驱动力以推动镜头。
由于镜头本身受到重力，采用上述实现对焦的方法时，在拍摄方向不同时，最终推动镜头的驱动力是计算得到的驱动力和重力相叠加后的力，也就是说，即便计算得到的驱动力相同，最终用于推动镜头的力也会因拍摄方向的不同而不同。这样，在相同对焦距离下，调整后的镜头的位置会随着拍摄方向的不同而不同，进而造成了在一些拍摄方向上对焦不准的问题。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种实现对焦的方法和装置，能够保证不同拍摄方向的对焦精度。
本发明实施例提供了一种实现对焦的装置，包括：
接收模块，设置为接收对焦指令，所述对焦指令包括对焦距离；
获取模块，设置为获取镜头在移动方向所受到的重力分力；
计算模块，设置为根据所述对焦指令中的对焦距离计算施加给镜头的预驱动力；根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦 的驱动力。
可选地，所述接收模块，是设置为接收到来自用户的手动对焦指令。
可选的，所述获取模块是设置为：
获取所述镜头在所述移动方向所受到的重力加速度和所述对焦距离对应的系数；
计算所述重力加速度和所述系数之间的乘积得到所述镜头在所述移动方向所受到的重力分力。
可选的，所述装置还包括：
设置模块，设置为预先获取对焦距离和所述系数之间的对应关系；
所述获取模块是设置为：
获取所述镜头在所述移动方向所受到的重力加速度，在所述对应关系中查找所述对焦指令中的对焦距离对应的系数；
计算所述重力加速度和所述系数之间的乘积得到所述镜头在所述移动方向所受到的重力分力。
可选的，所述设置模块是设置为：
对于一个对焦距离，按照公式
Figure PCTCN2016105751-appb-000001
计算该对焦距离对应的系数，保存所述对焦距离和计算得到的系数之间的对应关系；
其中，k为所述对焦距离对应的系数，F2为所述镜头对焦到所述对焦距离且垂直向上拍摄时需要产生的驱动力，F1为所述镜头对焦到所述对焦距离且垂直向下拍摄时需要产生的驱动力，G2为所述镜头垂直向上拍摄时所受到的重力加速度，G1为所述镜头垂直向下拍摄时所受到的重力加速度。
可选的，所述计算模块是设置为：
根据对焦指令中的对焦距离计算施加给镜头的预驱动力；计算所述预驱动力和所述获得的重力分力之间的差值得到所述驱动力。
可选的，所述接收模块，是设置为通过如下方式实现接收来自用户的手动对焦指令：
通过感知物理按键或虚拟按键被点击或双击，或者通过感知映射到触摸屏上的图形接收来自用户的手动对焦指令。
可选的，当向上拍摄时，镜头在移动方向所受到的重力加速度为负值；当向下拍摄时，镜头在移动方向所受到的重力加速度为正值。
可选地，所述获取模块是设置为通过如下方式实现获取所述镜头在所述移动方向所受到的重力加速度：
采用重力传感器获取镜头在移动方向所受到的重力加速度。
可选的，所述装置还包括：
推动模块，设置为利用所述计算得到的推动镜头对焦的驱动力将镜头推动到合焦位置。
本发明实施例还提出了一种实现对焦的方法，包括：
接收到对焦指令，根据对焦指令中的对焦距离计算施加给镜头的预驱动力；
获取镜头在移动方向所受到的重力分力；
根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力。
可选的，接收到对焦指令包括：
接收到来自用户的手动对焦指令。
可选的，所述获取镜头在移动方向所受到的重力分力包括：
获取所述镜头在所述移动方向所受到的重力加速度和所述对焦距离对应的系数；
计算所述重力加速度和所述系数之间的乘积得到所述镜头在所述移动方向所受到的重力分力。
可选的，接收到对焦指令，根据对焦指令中的对焦距离计算施加给镜头的预驱动力之前还包括：预先获取对焦距离和系数之间的对应关系；
所述获取系数包括：在所述对应关系中查找所述对焦指令中的对焦距离 对应的系数。
可选的，所述预先获取对焦距离和系数之间的对应关系包括：
对于一个对焦距离，按照公式
Figure PCTCN2016105751-appb-000002
计算该对焦距离对应的系数，保存所述对焦距离和计算得到的系数之间的对应关系；
其中，k为所述对焦距离对应的系数，F2为所述镜头对焦到所述对焦距离且垂直向上拍摄时需要产生的驱动力，F1为所述镜头对焦到所述对焦距离且垂直向下拍摄时需要产生的驱动力，G2为所述镜头垂直向上拍摄时所受到的重力加速度，G1为所述镜头垂直向下拍摄时所受到的重力加速度。
可选的，所述根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力包括：
计算所述预驱动力和所述重力分力之间的差值得到所述驱动力。
可选的，实现接收来自用户的手动对焦指令，包括：
通过感知物理按键或虚拟按键被点击或双击，或者通过感知映射到触摸屏上的图形接收来自用户的手动对焦指令。
可选的，当向上拍摄时，镜头在移动方向所受到的重力加速度为负值；当向下拍摄时，镜头在移动方向所受到的重力加速度为正值。
可选的，获取所述镜头在所述移动方向所受到的重力加速度，包括：
采用重力传感器获取镜头在移动方向所受到的重力加速度。
可选的，所述方法还包括：
利用所述计算得到的推动镜头对焦的驱动力将镜头推动到合焦位置。
本发明实施例包括接收模块，设置为接收到来自用户的手动对焦指令；获取模块，设置为获取镜头在移动方向所受到的重力分力；计算模块，根据手动对焦指令中的对焦距离计算施加给镜头的预驱动力；根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力。通过本发明实施例的方案，根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力，消除了不同拍摄方向由于重力对对焦产生的影响，保证了不同 拍摄方向的对焦精度。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为实现本发明各个实施例的移动终端的硬件结构示意图；
图2为如图1所示的移动终端的无线通信系统示意图；
图3为本发明实施例实现对焦的装置的结构组成示意图；
图4为本发明实施例实现对焦的方法的流程图。
本发明的实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
现在将参考附图描述实现本发明各个实施例的移动终端。在后续的描述中，使用设置为表示元件的诸如“模块”、“部件”或“单元”的后缀仅为了有利于本发明实施例的说明，其本身并没有特定的意义。因此，"模块"与"部件"可以混合地使用。
移动终端可以以各种形式来实施。例如，本发明实施例中描述的终端可以包括诸如移动电话、智能电话、笔记本电脑、数字广播接收器、PDA(个人数字助理)、PAD(平板电脑)、PMP(便携式多媒体播放器)、导航装置等等的移动终端以及诸如数字TV、台式计算机等等的固定终端。下面，假设终端是移动终端。然而，本领域技术人员将理解的是，除了特别用于移动目的的元件之外，根据本发明的实施方式的构造也能够应用于固定类型的终端。
图1为实现本发明各个实施例的移动终端的硬件结构示意。
移动终端100可以包括用户输入单元130、感测单元140、输出单元150、存储器160、控制器180和电源单元190等等。图1示出了具有各种组件的移动终端，但是应理解的是，并不要求实施所有示出的组件。可以替代地实施更多或更少的组件。将在下面详细描述移动终端的元件。
用户输入单元130可以根据用户输入的命令生成键输入数据以控制移动终端的各种操作。用户输入单元130允许用户输入各种类型的信息，并且可以 包括键盘、锅仔片、触摸板(例如，检测由于被接触而导致的电阻、压力、电容等等的变化的触敏组件)、滚轮、摇杆等等。特别地，当触摸板以层的形式叠加在显示单元151上时，可以形成触摸屏。
感测单元140检测移动终端100的当前状态，(例如，移动终端100的打开或关闭状态)、移动终端100的位置、用户对于移动终端100的接触(即，触摸输入)的有无、移动终端100的取向、移动终端100的加速或减速移动和方向等等，并且生成用于控制移动终端100的操作的命令或信号。例如，当移动终端100实施为滑动型移动电话时，感测单元140可以感测该滑动型电话是打开还是关闭。另外，感测单元140能够检测电源单元190是否提供电力或者接口单元170是否与外部装置耦接。感测单元140可以包括接近传感器1410将在下面结合触摸屏来对此进行描述。
输出单元150可以包括显示单元151等等。
显示单元151可以显示在移动终端100中处理的信息。例如，当移动终端100处于电话通话模式时，显示单元151可以显示与通话或其它通信(例如，文本消息收发、多媒体文件下载等等)相关的用户界面(UI)或图形用户界面(GUI)。当移动终端100处于视频通话模式或者图像捕获模式时，显示单元151可以显示捕获的图像和/或接收的图像、示出视频或图像以及相关功能的UI或GUI等等。
同时，当显示单元151和触摸板以层的形式彼此叠加以形成触摸屏时，显示单元151可以用作输入装置和输出装置。显示单元151可以包括液晶显示器(LCD)、薄膜晶体管LCD(TFT-LCD)、有机发光二极管(OLED)显示器、柔性显示器、三维(3D)显示器等等中的至少一种。这些显示器中的一些可以被构造为透明状以允许用户从外部观看，这可以称为透明显示器，典型的透明显示器可以例如为TOLED(透明有机发光二极管)显示器等等。根据特定想要的实施方式，移动终端100可以包括两个或更多显示单元(或其它显示装置)，例如，移动终端可以包括外部显示单元(未示出)和内部显示单元(未示出)。触摸屏可设置为检测触摸输入压力以及触摸输入位置和触摸输入面积。
存储器160可以存储由控制器180执行的处理和控制操作的软件程序等等，或者可以暂时地存储己经输出或将要输出的数据(例如，电话簿、消息、静态图像、视频等等)。而且，存储器160可以存储关于当触摸施加到触摸屏 时输出的各种方式的振动和音频信号的数据。
存储器160可以包括至少一种类型的存储介质，所述存储介质包括闪存、硬盘、多媒体卡、卡型存储器(例如，SD或DX存储器等等)、随机访问存储器(RAM)、静态随机访问存储器(SRAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、可编程只读存储器(PROM)、磁性存储器、磁盘、光盘等等。而且，移动终端100可以与通过网络连接执行存储器160的存储功能的网络存储装置协作。
控制器180通常控制移动终端的总体操作。例如，控制器180执行与语音通话、数据通信、视频通话等等相关的控制和处理。另外，控制器180可以包括设置为再现(或回放)多媒体数据的多媒体模块1810，多媒体模块1810可以构造在控制器180内，或者可以构造为与控制器180分离。控制器180可以执行模式识别处理，以将在触摸屏上执行的手写输入或者图片绘制输入识别为字符或图像。
电源单元190在控制器180的控制下接收外部电力或内部电力并且提供操作各元件和组件所需的适当的电力。
这里描述的各种实施方式可以以使用例如计算机软件、硬件或其任何组合的计算机可读介质来实施。对于硬件实施，这里描述的实施方式可以通过使用特定用途集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理装置(DSPD)、可编程逻辑装置(PLD)、现场可编程门阵列(FPGA)、处理器、控制器、微控制器、微处理器、被设计为执行这里描述的功能的电子单元中的至少一种来实施，在一些情况下，这样的实施方式可以在控制器180中实施。对于软件实施，诸如过程或功能的实施方式可以与允许执行至少一种功能或操作的单独的软件模块来实施。软件代码可以由以任何适当的编程语言编写的软件应用程序(或程序)来实施，软件代码可以存储在存储器160中并且由控制器180执行。
至此，己经按照其功能描述了移动终端。下面，为了简要起见，将描述诸如折叠型、直板型、摆动型、滑动型移动终端等等的各种类型的移动终端中的滑动型移动终端作为示例。因此，本发明实施例能够应用于任何类型的移动终端，并且不限于滑动型移动终端。
如图1中所示的移动终端100可以被构造为利用经由帧或分组发送数据的 诸如有线和无线通信系统以及基于卫星的通信系统来操作。
现在将参考图2描述其中根据本发明实施例的移动终端能够操作的通信系统。
这样的通信系统可以使用不同的空中接口和/或物理层。例如，由通信系统使用的空中接口包括例如频分多址(FDMA)、时分多址(TDMA)、码分多址(CDMA)和通用移动通信系统(UMTS)(特别地，长期演进(LTE))、全球移动通信系统(GSM)等等。作为非限制性示例，下面的描述涉及CDMA通信系统，但是这样的教导同样适用于其它类型的系统。
参考图2，CDMA无线通信系统可以包括多个移动终端100、多个基站(BS)270、基站控制器(BSC)275和移动交换中心(MSC)280。MSC280被构造为与公共电话交换网络(PSTN)290形成接口。MSC280还被构造为与可以经由回程线路耦接到基站270的BSC275形成接口。回程线路可以根据若干己知的接口中的任一种来构造，所述接口包括例如E1/T1、ATM，IP、PPP、帧中继、HDSL、ADSL或xDSL。将理解的是，如图2中所示的系统可以包括多个BSC2750。
每个BS270可以服务一个或多个分区(或区域)，由多向天线或指向特定方向的天线覆盖的每个分区放射状地远离BS270。或者，每个分区可以由设置为分集接收的两个或更多天线覆盖。每个BS270可以被构造为支持多个频率分配，并且每个频率分配具有特定频谱(例如，1.25MHz,5MHz等等)。
分区与频率分配的交叉可以被称为CDMA信道。BS270也可以被称为基站收发器子系统(BTS)或者其它等效术语。在这样的情况下，术语"基站"可以用于笼统地表示单个BSC275和至少一个BS270。基站也可以被称为"蜂窝站"。或者，特定BS270的各分区可以被称为多个蜂窝站。
如图2中所示，广播发射器(BT)295将广播信号发送给在系统内操作的移动终端100。如图1中所示的广播接收模块111被设置在移动终端100处以接收由BT295发送的广播信号。在图2中，示出了几个全球定位系统(GPS)卫星300。卫星300帮助定位多个移动终端100中的至少一个。
在图2中，描绘了多个卫星300，但是理解的是，可以利用任何数目的卫星获得有用的定位信息。如图1中所示的GPS模块115通常被构造为与卫星300配合以获得想要的定位信息。替代GPS跟踪技术或者在GPS跟踪技术之外，可 以使用可以跟踪移动终端的位置的其它技术。另外，至少一个GPS卫星300可以选择性地或者额外地处理卫星DMB传输。
作为无线通信系统的一个典型操作，BS270接收来自各种移动终端100的反向链路信号。移动终端100通常参与通话、消息收发和其它类型的通信。特定基站270接收的每个反向链路信号被在特定BS270内进行处理。获得的数据被转发给相关的BSC275。BSC提供通话资源分配和包括BS270之间的软切换过程的协调的移动管理功能。BSC275还将接收到的数据路由到MSC280，其提供用于与PSTN290形成接口的额外的路由服务。类似地，PSTN290与MSC280形成接口，MSC与BSC275形成接口，并且BSC275相应地控制BS270以将正向链路信号发送到移动终端100。
基于上述移动终端硬件结构以及通信系统，提出本发明方法各个实施例。
参见图3，本发明实施例提出了一种实现对焦的装置，包括：
接收模块301，设置为接收到对焦指令，所述对焦指令包括对焦距离；
获取模块302，设置为获取镜头在移动方向所受到的重力分力；
计算模块303，设置为根据对焦指令中的对焦距离计算施加给镜头的预驱动力；根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力。
可选的，所述接收模块是设置为接收到来自用户的手动对焦指令。
本发明实施例的装置中，获取模块是设置为：
获取镜头在移动方向所受到的重力加速度和所述对焦距离对应的系数；
计算重力加速度和系数之间的乘积得到镜头在所述移动方向所受到的重力分力。
本发明实施例的装置中，还包括：
设置模块，设置为预先获取对焦距离和系数之间的对应关系；
获取模块是设置为：
获取镜头在移动方向所受到的重力加速度，在所述对应关系中查找对焦指令中的对焦距离对应的系数；计算重力加速度和系数之间的乘积得到镜头在移动方向所受到的重力分力。
本发明实施例的装置中，设置模块是设置为：
对于一个对焦距离，按照公式
Figure PCTCN2016105751-appb-000003
计算该一个对焦距离对应的系数，保存一个对焦距离和计算得到的系数之间的对应关系；
其中，k为一个对焦距离对应的系数，F2为镜头对焦到所述对焦距离且垂直向上拍摄时需要产生的驱动力，F1为镜头对焦到所述对焦距离且垂直向下拍摄时需要产生的驱动力，G2为镜头垂直向上拍摄时所受到的重力加速度，G1为镜头垂直向下拍摄时所受到的重力加速度。
其中，F2和F1可以通过实验预先测量获得。
本发明实施例的装置中，计算模块是设置为：
根据对焦指令中的对焦距离计算施加给镜头的预驱动力；计算所述预驱动力和获得的重力分力之间的差值得到驱动力。
可选的，所述装置还包括：
推动模块，设置为利用所述计算得到的推动镜头对焦的驱动力将镜头推动到合焦位置。
需要说明的是，本发明实施例提供的实现对焦的装置中的接收模块可以设置在图1中的用户输入单元130中，计算模块可以设置在图1中的控制器180中，获取模块可以设置在图1中的感测单元140和控制器180中。
参见图4，本发明实施例还提出了一种实现对焦的方法，包括：
步骤400、接收到来自用户的对焦指令，根据对焦指令中的对焦距离计算施加给镜头的预驱动力。
可选的,接收到的是来自用户的手动对焦指令；
用户可以采用点击或双击物理按键或虚拟按键、或触摸手势的方式来输入对焦指令，对焦指令中包含有对焦距离。例如，通过滑动触摸屏上显示的对焦距离条到一个对焦距离处。
相应地，本步骤中，可以通过感知所述物理按键或虚拟按键被点击或双击，或通过感知映射到触摸屏上的图形接收来自用户的对焦指令。
本步骤中，具体如何根据对焦指令中的对焦距离计算施加给镜头的预驱 动力属于本领域技术人员的公知技术，并不用于限定本发明的保护范围，这里不再赘述。
步骤401、获取镜头在移动方向所受到的重力分力。
本步骤中，获取镜头在移动方向所受到的重力分力包括：
获取镜头在移动方向所受到的重力加速度和所述对焦距离对应的系数；计算重力加速度和系数之间的乘积得到镜头在移动方向所受到的重力分力。
其中，可以采用重力传感器获取镜头在移动方向所受到的重力加速度。
其中，重力传感器是利用了内部由于加速度造成的某个介质(如晶体、电容等)产生形变的特性，通过测量其变形量并用相关电路转换成电压输出，从而得到重力加速度。
本发明实施例中，当向上拍摄时，重力传感器获得的镜头在移动方向所受到的重力加速度为负值；当向下拍摄时，重力传感器获得的镜头在移动方向所受到的重力加速度为正值。
步骤402、根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力。
本步骤中，根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力包括：
计算所述驱动力和获得的重力分力之间的差值得到驱动力。
可选地，步骤401之前还包括：预先获取对焦距离和系数之间的对应关系；
步骤401中获取系数包括：在对应关系中查找对焦指令中的对焦距离对应的系数。
其中，预先获取对焦距离和系数之间的对应关系包括：
对于一个对焦距离，按照公式
Figure PCTCN2016105751-appb-000004
计算该一个对焦距离对应的系数，保存一个对焦距离和计算得到的系数之间的对应关系；
其中，k为一个对焦距离对应的系数，F2为镜头对焦到所述对焦距离且垂直向上拍摄时需要产生的驱动力，F1为镜头对焦到所述对焦距离且垂直向 下拍摄时需要产生的驱动力，G2为镜头垂直向上拍摄时所受到的重力加速度，G1为镜头垂直向下拍摄时所受到的重力加速度。
其中，F2和F1可以通过实验预先测量获得。
可选的，所述方法还包括：
利用所述计算得到的推动镜头对焦的驱动力将镜头推动到合焦位置。
可选的，
可以采用音圈马达等产生驱动力推动镜头到合焦位置。
通过本发明实施例的方案，根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力，消除了不同拍摄方向由于重力对对焦产生的影响，保证了不同拍摄方向的对焦精度。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本发明各个实施例所述的方法。
以上仅为本发明的可选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间 接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。
工业实用性
上述技术方案消除了不同拍摄方向由于重力对对焦产生的影响，保证了不同拍摄方向的对焦精度。

Claims (20)

  1. 一种实现对焦的装置，包括：
    接收模块，设置为接收到对焦指令，所述对焦指令包括对焦距离；
    获取模块，设置为获取镜头在移动方向所受到的重力分力；
    计算模块，设置为根据所述对焦指令中的对焦距离计算施加给镜头的预驱动力；根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力。
  2. 根据权利要求1所述的装置，其中，
    所述接收模块，是设置为接收到来自用户的手动对焦指令。
  3. 根据权利要求1或2所述的装置，其中，
    所述获取模块是设置为，获取所述镜头在所述移动方向所受到的重力加速度和所述对焦距离对应的系数；计算所述重力加速度和所述系数之间的乘积得到所述镜头在所述移动方向所受到的重力分力。
  4. 根据权利要求3所述的装置，还包括：
    设置模块，设置为预先获取对焦距离和所述系数之间的对应关系；
    所述获取模块是设置为，获取所述镜头在所述移动方向所受到的重力加速度，在所述对应关系中查找所述对焦指令中的对焦距离对应的系数；计算所述重力加速度和所述系数之间的乘积得到所述镜头在所述移动方向所受到的重力分力。
  5. 根据权利要求4所述的装置，其中，所述设置模块是设置为：
    对于一个对焦距离，按照公式
    Figure PCTCN2016105751-appb-100001
    计算该对焦距离对应的系数，保存所述对焦距离和计算得到的系数之间的对应关系；
    其中，k为所述对焦距离对应的系数，F2为所述镜头对焦到所述对焦距离且垂直向上拍摄时需要产生的驱动力，F1为所述镜头对焦到所述对焦距离且垂直向下拍摄时需要产生的驱动力，G2为所述镜头垂直向上拍摄时所受到的重力加速度，G1为所述镜头垂直向下拍摄时所受到的重力加速度。
  6. 根据权利要求1或2所述的装置，其中，
    所述计算模块是设置为，根据对焦指令中的对焦距离计算施加给镜头的预驱动力；计算所述预驱动力和所述获得的重力分力之间的差值得到所述驱动力。
  7. 根据权利要求2所述的装置，其中，所述接收模块，是设置为通过如下方式实现接收来自用户的手动对焦指令：
    通过感知物理按键或虚拟按键被点击或双击，或者通过感知映射到触摸屏上的图形接收来自用户的手动对焦指令。
  8. 根据权利要求5所述的装置，其中，
    当向上拍摄时，镜头在移动方向所受到的重力加速度为负值；当向下拍摄时，镜头在移动方向所受到的重力加速度为正值。
  9. 根据权利要求3所述的装置，其中，所述获取模块是设置为通过如下方式实现获取所述镜头在所述移动方向所受到的重力加速度：
    采用重力传感器获取镜头在移动方向所受到的重力加速度。
  10. 根据权利要求1所述的装置，还包括：
    推动模块，设置为利用所述计算得到的推动镜头对焦的驱动力将镜头推动到合焦位置。
  11. 一种实现对焦的方法，包括：
    接收到对焦指令，根据对焦指令中的对焦距离计算施加给镜头的预驱动力；
    获取镜头在移动方向所受到的重力分力；
    根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力。
  12. 根据权利要求11所述的方法，其中，接收到对焦指令包括：
    接收到来自用户的手动对焦指令。
  13. 根据权利要求11或12所述的方法，其中，所述获取镜头在移动方向所受到的重力分力包括：
    获取所述镜头在所述移动方向所受到的重力加速度和所述对焦距离对应的系数；
    计算所述重力加速度和所述系数之间的乘积得到所述镜头在所述移动方向所受到的重力分力。
  14. 根据权利要求13所述的方法，所述方法还包括：
    接收到对焦指令，根据对焦指令中的对焦距离计算施加给镜头的预驱动力之前，预先获取对焦距离和系数之间的对应关系；
    所述获取系数包括：在所述对应关系中查找所述对焦指令中的对焦距离对应的系数。
  15. 根据权利要求14所述的方法，其中，所述预先获取对焦距离和系数之间的对应关系包括：
    对于一个对焦距离，按照公式
    Figure PCTCN2016105751-appb-100002
    计算该对焦距离对应的系数，保存所述对焦距离和计算得到的系数之间的对应关系；
    其中，k为所述对焦距离对应的系数，F2为所述镜头对焦到所述对焦距离且垂直向上拍摄时需要产生的驱动力，F1为所述镜头对焦到所述对焦距离且垂直向下拍摄时需要产生的驱动力，G2为所述镜头垂直向上拍摄时所受到的重力加速度，G1为所述镜头垂直向下拍摄时所受到的重力加速度。
  16. 根据权利要求11或12所述的方法，其中，所述根据计算得到的预驱动力和获得的重力分力计算用于推动镜头对焦的驱动力包括：
    计算所述预驱动力和所述重力分力之间的差值得到所述驱动力。
  17. 根据权利要求12所述的方法，其中，实现接收来自用户的手动对焦指令，包括：
    通过感知物理按键或虚拟按键被点击或双击，或者通过感知映射到触摸屏上的图形接收来自用户的手动对焦指令。
  18. 根据权利要求15所述的方法，其中，
    当向上拍摄时，镜头在移动方向所受到的重力加速度为负值；当向下拍摄时，镜头在移动方向所受到的重力加速度为正值。
  19. 根据权利要求15所述的方法，其中，获取所述镜头在所述移动方向所受到的重力加速度，包括：
    采用重力传感器获取镜头在移动方向所受到的重力加速度。
  20. 根据权利要求11所述的方法，还包括：
    利用所述计算得到的推动镜头对焦的驱动力将镜头推动到合焦位置。
PCT/CN2016/105751 2015-12-21 2016-11-14 一种实现对焦的方法和装置 Ceased WO2017107703A1 (zh)

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