WO2011006379A1 - 移动终端、移动终端摄像装置及实现摄像的方法 - Google Patents
移动终端、移动终端摄像装置及实现摄像的方法 Download PDFInfo
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- WO2011006379A1 WO2011006379A1 PCT/CN2010/071773 CN2010071773W WO2011006379A1 WO 2011006379 A1 WO2011006379 A1 WO 2011006379A1 CN 2010071773 W CN2010071773 W CN 2010071773W WO 2011006379 A1 WO2011006379 A1 WO 2011006379A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
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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
- H04N23/665—Control of cameras or camera modules involving internal camera communication with the image sensor, e.g. synchronising or multiplexing SSIS control signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/52—Details of telephonic subscriber devices including functional features of a camera
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- Mobile terminal mobile terminal imaging device and method for realizing imaging
- the present invention relates to a mobile terminal, a mobile terminal imaging device, and a method of implementing imaging.
- portable mobile terminals such as mobile phones, digital cameras, etc.
- multimedia functions of portable terminals are increasingly favored by more people.
- the complexity of the system and the power consumption brought about by the powerful functions make people's use of multimedia functions prohibitive.
- some patents use the method of turning off the LCD screen, which affects the user experience after all.
- the general LCD brightness level is about 10mA, too dark to affect the visual effect, the general level adjustment can reduce tens of mA, static or low-speed motion for camera operation It can be accepted that once the camera is quickly moved or faced with a scene with a high moving speed, the fixed frame rate corresponding to the fixed clock frequency appears to be insufficient for the frame rate, resulting in the presence of the scene. Setting a higher frame rate requires the system to clock the camera larger, resulting in increased power consumption of the system and the camera. Summary of the invention
- the technical problem to be solved by the present invention is to provide a mobile terminal, a mobile terminal camera device, and a method for realizing imaging to reduce power consumption and save power.
- the present invention provides a mobile terminal camera device, which includes a dynamic chip, a speed calculation module, and a system clock adjustment module, which are sequentially connected, wherein:
- the motion chip is configured to: collect the acceleration of the camera device, and report the acceleration to the speed calculation module;
- the speed calculation module is configured to: calculate a current speed according to an initial speed of the camera device corresponding to the current application scene mode and an acceleration of the dynamic chip set, and notify the system clock to adjust The entire module performs clock system clock adjustment;
- the system clock adjustment module is set to: Adjust the system clock according to the current speed.
- the system clock adjustment module is configured to: save a preset speed level and a corresponding clock level, different speed levels correspond to different speed level thresholds, different clock levels correspond to different system clock frequencies, and the current After comparing the speed with the speed level threshold, the corresponding speed level and clock level are determined, and the system clock frequency is adjusted according to the corresponding clock level.
- the device also includes a camera frame rate adjustment module coupled to the system clock adjustment module,
- the system clock adjustment module is further configured to: after adjusting the clock frequency, further configured to notify the camera frame rate adjustment module;
- the camera frame rate adjustment module is configured to: adjust a camera frame rate according to the adjusted system clock frequency.
- the present invention further provides a mobile terminal, wherein the mobile terminal includes an imaging device for imaging, the imaging device includes a dynamic chip, a speed calculation module, and a system clock adjustment module, which are sequentially connected, wherein:
- the motion chip is configured to: collect acceleration of the camera device, and report the acceleration to the speed calculation module;
- the speed calculation module is configured to: calculate a current speed according to an initial speed of the camera corresponding to the current application scene mode and an acceleration of the dynamic chip set, and notify the system clock adjustment module to perform clock system clock adjustment;
- the system clock adjustment module is set to: Adjust the system clock according to the current speed.
- the system clock adjustment module is configured to: save a preset speed level and a corresponding clock level, different speed levels correspond to different speed level thresholds, different clock levels correspond to different system clock frequencies, and the current speed is After comparing with the speed level threshold, the corresponding speed level and clock level are determined, and then the system clock frequency is adjusted according to the corresponding clock level.
- the device also includes a camera frame rate adjustment module coupled to the system clock adjustment module,
- the system clock adjustment is further set to: notify the camera frame rate adjustment after adjusting the clock frequency
- the module performs camera frame rate adjustment
- the camera frame rate adjustment module is configured to: adjust a camera frame rate according to the adjusted system clock frequency.
- the system clock adjustment module is further configured to: if the adjusted system clock level is not the lowest level that the system can operate normally, and the new speed is not received in the speed calculation module within the timing interval, then the clock level is degraded Adjustment.
- the present invention further provides a method for implementing imaging by a mobile terminal, where the method includes:
- Acceleration step When shooting, the camera collects its own acceleration
- Speed calculation step the camera device calculates a current speed according to an initial speed of the camera corresponding to the current application scene mode and an acceleration of the collected set;
- System clock adjustment step The camera device adjusts the system clock according to the current speed.
- the camera device stores a preset speed level and a corresponding clock level, and different speed levels correspond to different speed level thresholds, and different clock levels correspond to different system clock frequencies; in the system clock adjustment step, The camera device compares the current speed with the speed level threshold, determines a corresponding speed level and a clock level, and then adjusts the system clock frequency according to the corresponding clock level.
- the method further includes a camera frame rate adjustment step: the camera device adjusts the camera frame rate according to the adjusted system clock frequency.
- the mobile terminal, the mobile terminal camera device and the image capturing method of the invention dynamically adjust the system clock frequency according to the real-time speed of the portable terminal and the captured scene, thereby reducing the application power consumption, so that the system clock does not have to be maintained at full speed.
- the clock is further dynamically adjusted and sent to the camera clock, thereby dynamically adjusting the frame rate of the camera to adapt to the scene with different motion speed, the scene with low motion speed, and the frame rate of the camera output.
- Low, high-speed scene, the camera output frame rate is higher, so that the user has a better effect when viewing the scene in the motion (for example, there is no smear when framing or shooting the scene in motion).
- BRIEF abstract 1 is a block diagram showing the structure of a camera terminal of a mobile terminal according to the present invention.
- FIG. 2 is a schematic diagram of a method for implementing imaging by a mobile terminal according to the present invention
- FIG. 3 is a schematic diagram of a process for implementing video recording by a mobile terminal.
- the main idea of the mobile terminal, the mobile terminal camera device and the image capturing method of the present invention is to use the motion chip to collect the acceleration of the camera device in real time, and dynamically adjust the system clock according to the calculated current speed, so that the system clock does not need to be kept at all times.
- the state of full speed operation in order to achieve the purpose of power saving.
- the camera device of the mobile terminal of the present invention includes a dynamic sensor chip, a speed calculation module, a system clock adjustment module, and a camera frame rate adjustment module, wherein: the motion chip is a device or a chip capable of obtaining acceleration in real time. The acceleration for collecting the camera device is reported to the speed calculation module;
- the purpose of detecting the acceleration by the dynamic chip is to make the speed of the camera as close as possible to the speed of the viewfinder, so that the relative speed of the camera and the viewfinder is as small as possible, or in relative The point of rest is good for shooting.
- the motion chip can be connected to the camera to collect acceleration, or it can detect the speed of the camera itself.
- the camera, the imaging device, and the mobile terminal including the imaging device are relatively immobile, and the acceleration of the imaging device is the acceleration of the camera or the mobile terminal.
- the power consumption of a single chip varies from tens to hundreds of microamps.
- the power consumption of a dynamic chip is negligible compared to that of a camera, video, or video encoding.
- the speed calculation module is configured to calculate a current speed according to an initial speed of the camera device corresponding to the current application scene mode and an acceleration of the dynamic chip set, and notify the system clock adjustment module to perform clock system clock adjustment;
- the initial speed of the camera device mentioned here is the speed corresponding to the applied scene mode of the shooting.
- the initial speed of the camera in the normal mode is zero
- the initial speed of the fast mode is preset, for example, the speed corresponding to the fast mode can be set and
- the clock level is the highest level, allowing the system to work at the highest clock level from the start.
- the system clock adjustment module is configured to adjust the system clock according to the current speed; and is further configured to perform clock level degradation adjustment according to the speed reduction module of the speed calculation module; after adjusting the system clock frequency, if the adjusted system clock level is not the system The lowest level of normal operation, and the speed calculation module does not receive the new speed reported in the time interval.
- the system clock adjustment module is further configured to perform clock level degradation adjustment, and is also used to notify the camera frame rate adjustment module. Perform camera frame rate adjustment.
- the system clock adjustment module stores preset speed levels and corresponding clock levels, different speed levels correspond to different speed level thresholds, different clock levels correspond to different system clock frequencies, and the system clock adjustment module performs system When the clock frequency is adjusted, the current speed is compared with the speed level threshold, the corresponding speed level and the clock level are determined, and the system clock frequency is adjusted according to the corresponding clock level.
- Adjusting the system clock frequency according to the speed of the camera of the mobile terminal can reduce the power consumption of the application and ultimately achieve the purpose of power saving.
- the user can choose to use the clock to dynamically adjust the function according to personal preference, or use the default settings.
- the camera frame rate adjustment module is configured to adjust a camera frame rate according to the adjusted system clock frequency.
- the camera frame rate refers to the frame rate of the camera output data.
- the frame rate of the camera output data is adjusted in real time according to the current speed level to adapt to the scene with different motion speeds, the scene with low motion speed, the frame rate of the camera output is low, and the speed is high.
- Scene the camera output has a higher frame rate, which ensures that the user has a better effect when shooting the scene (for example, there is no shadow, etc. when framing or shooting a scene in motion).
- the invention also provides a mobile terminal, including but not limited to having a camera function Camera or mobile phone, the mobile terminal includes the above-mentioned camera device, and the function of the camera device is the same as described above. It can be understood that the camera device of the present invention can be integrated with the camera or can be implemented separately.
- the mobile terminal includes a digital baseband processor (DBB) required for signal processing in order to implement a complete device function. , analog baseband processor (ABB), RF module, display, etc.
- DBB digital baseband processor
- ABB analog baseband processor
- RF module RF module
- display etc.
- the method for realizing imaging by the mobile terminal of the present invention is implemented based on the above camera device, and the method includes:
- Step 201 an acceleration collecting step, wherein the camera device collects its own acceleration degree during imaging
- Step 202 a speed calculation step, the camera device calculates a current speed according to an initial speed of the camera corresponding to the current application scene mode and an acceleration of the set;
- Step 203 The system clock adjustment step, the camera device adjusts the system clock according to the current speed
- the camera device stores a preset speed level and a corresponding clock level, and different speed levels correspond to different speed level thresholds, and different clock levels correspond to different system clock frequencies, in the system clock adjustment step, The camera device compares the current speed with the speed level threshold, determines a corresponding speed level and a clock level, and then adjusts the system clock frequency according to the corresponding clock level.
- Step 204 The camera frame rate adjustment step, the camera device adjusts the camera frame rate according to the adjusted system clock frequency.
- the present invention divides the system clock frequency into N levels, that is, corresponding to N clock frequency thresholds, and the clock frequency at J_c is the minimum clock frequency that the system can normally operate, L _clk N ⁇ , ie The clock frequency at which the system is running at full speed.
- the present invention divides the camera moving speed into N levels, and the threshold values are 0 to ⁇ - the level is J_v. To J _ VAM .
- the first one can be based on the camera.
- the system calculates the current speed according to the acceleration reported by the motion chip and determines the speed level according to the speed threshold of different levels, and then adjusts the system clock frequency in real time, so that the system clock is not maintained at full speed. To achieve power saving and adjust the frame rate in real time.
- the imaging referred to in the present invention includes photographing, video encoding of a video recorder (for example, videophone or videoshare), and the like, and operations related to capturing images by the camera.
- a video recorder for example, videophone or videoshare
- operations related to capturing images by the camera are described in detail by taking video as an example:
- Step 301 The user opens the motion chip while entering the recording interface; and then sets the initial speed according to the application scene set by the user, that is, sets the speed of the camera relative to the recorded scene, and the system compares the speed level threshold to set the corresponding system.
- the speed grade J _ v which in turn determines the clock level of the system J _ c / adjusts the clock frequency in real time. By default, the speed is at L _v 0 and the system clock is at J _c. grade.
- Step 302 Press the record button to start recording
- Step 303 Once the motion chip detects the moving acceleration, the collected acceleration a is actively reported to the speed calculation module;
- the speed or clock level is already the highest level, ie, the first level, the speed or clock level remains at the first level even if the acceleration is detected again.
- Step 305 The system clock adjustment module determines that the clock and the speed level are adjusted to a non-zero level, and then starts a timer, and the time interval is interval_time, otherwise the timer is not started.
- Step 306 In the timing interval time_interval, the motion chip detects a new acceleration a, then proceeds to step 303, otherwise proceeds to step 307;
- Step 307 If the speed calculation module does not receive the acceleration reported by the motion chip when the timing time expires, and the system clock adjustment module does not receive the new speed, the system clock adjustment module automatically lowers the clock level and the speed level by one level. And proceeds to step 305;
- Automatic degrading prevents the camera from staying in a high clock frequency mode, while further saving power.
- the mobile terminal, the mobile terminal camera device and the image capturing method of the invention dynamically adjust the clock frequency of the system according to the speed of the mobile terminal, thereby reducing the power consumption of the application, so that the system clock does not need to be maintained at the full speed state, thereby achieving the purpose of power saving.
- the system clock is dynamically adjusted, it is further dynamically adjusted to the camera clock, thereby dynamically adjusting the frame rate of the camera to adapt to scenes with different motion speeds, scenes with low motion speed, lower frame rate of camera output, and high speed scene.
- the camera output has a higher frame rate, which ensures that the user has a better effect when viewing the scene in the framing motion (for example, there is no smear when framing or shooting a scene in motion).
- the mobile terminal, the mobile terminal camera device and the image capturing method of the invention dynamically adjust the system clock frequency according to the real-time speed of the portable terminal and the captured scene, thereby reducing the application power consumption, so that the system clock does not have to be maintained at full speed.
- the clock is further dynamically adjusted and sent to the camera clock, thereby dynamically adjusting the frame rate of the camera to adapt to the scene with different motion speed, the scene with low motion speed, and the frame rate of the camera output.
- Low, high-speed scene, the camera output frame rate is higher, so that the user has a better effect when viewing the scene in the motion (for example, there is no smear when framing or shooting the scene in motion).
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Description
移动终端、 移动终端摄像装置及实现摄像的方法
技术领域
本发明涉及移动终端、 移动终端摄像装置及实现摄像的方法。
背景技术
目前便携可移动终端 (比如手机, 数码相机等)成了人们生活中必不可 少的通讯工具, 与此同时, 便携终端的多媒体功能也越来越被更多的人青睐。 但是系统的复杂, 功能的强大所带来的大功耗让人们对多媒体功能的使用望 而却步。 为了降低有关多媒体应用功耗, 有的专利釆用关闭 LCD屏的方式, 这毕竟会影响用户体验, 大多数情况下, 用户都希望能够看到自己所拍照、 录像以及视频编码的景象; 有的则通过调节 LCD 亮度等级来达到省电的目 的, 一般的 LCD亮度等级在 10mA左右, 调太暗则影响视觉效果, 一般的等 级调节虽能够降低几十 mA, 静止或者低速运动进行摄像头操作时还可以接 受, 一旦快速移动摄像头或者面对的是移动速度较高的景象, 则固定的时钟 频率所对应的固定的帧率又显得帧率不够大而导致所取的景象存在托影, 如 果直接设定较高的帧率则要求系统给摄像头的时钟较大从而导致系统以及摄 像头的功耗增大。 发明内容
本发明要解决的技术问题是提供一种移动终端、 移动终端摄像装置及实 现摄像的方法, 以降低功耗节省用电。
为解决以上技术问题, 本发明提供一种移动终端摄像装置, 所述装置包 括依次连接的动感芯片、 速度计算模块及系统时钟调整模块, 其中:
所述动感芯片设置为: 釆集所述摄像装置加速度, 并上报给所述速度计 算模块;
所述速度计算模块设置为: 根据当前应用场景模式对应的摄像装置初始 速度及所述动感芯片釆集的加速度计算当前的速度, 并通知所述系统时钟调
整模块进行时钟系统时钟调整;
系统时钟调整模块设置为: 根据当前的速度对系统时钟进行调整。
所述系统时钟调整模块是设置为: 保存预设的速度等级及对应的时钟等 级, 不同的速度等级对应不同的速度等级阔值, 不同的时钟等级对应不同的 系统时钟频率, 将所述当前的速度与所述速度等级阔值比较后, 确定对应的 速度等级及时钟等级, 再根据对应的时钟等级对系统时钟频率进行调整。
所述装置还包括与所述系统时钟调整模块相连接的摄像头帧率调整模 块,
所述系统时钟调整模块还设置为: 调整时钟频率后, 还用于通知所述摄 像头帧率调整模块;
所述摄像头帧率调整模块设置为: 根据调整后的系统时钟频率调整摄像 头帧率。
为解决上述技术问题, 本发明还提供一种移动终端, 所述移动终端包括 用于摄像的摄像装置, 所述摄像装置包括依次连接的动感芯片、 速度计算模 块及系统时钟调整模块, 其中:
所述动感芯片设置为: 釆集摄像装置的加速度, 并上报给所述速度计算 模块;
所述速度计算模块设置为: 根据当前应用场景模式对应的摄像装置初始 速度及所述动感芯片釆集的加速度计算当前的速度, 并通知所述系统时钟调 整模块进行时钟系统时钟调整;
系统时钟调整模块设置为: 根据当前的速度对系统时钟进行调整。
所述系统时钟调整模块设置为:保存预设的速度等级及对应的时钟等级, 不同的速度等级对应不同的速度等级阔值, 不同的时钟等级对应不同的系统 时钟频率, 将所述当前的速度与所述速度等级阔值比较后, 确定对应的速度 等级及时钟等级, 再根据对应的时钟等级对系统时钟频率进行调整。
所述装置还包括与所述系统时钟调整模块相连接的摄像头帧率调整模 块,
所述系统时钟调整还设置为: 调整时钟频率后通知所述摄像头帧率调整
模块进行摄像头帧率调整;
所述摄像头帧率调整模块设置为: 根据调整后的系统时钟频率调整摄像 头帧率。
所述系统时钟调整模块还设置为: 若调整后的系统时钟等级不是系统能 够正常运行的最低等级, 且定时间隔内未收到所述速度计算模块上 ^艮新的速 度, 则进行时钟等级降级调整。
为解决上述技术问题, 本发明还提供一种移动终端实现摄像的方法, 所 述方法包括:
加速度釆集步骤: 摄像时, 摄像装置釆集其自身的加速度;
速度计算步骤: 所述摄像装置根据当前应用场景模式对应的摄像装置初 始速度及釆集的加速度计算当前的速度;
系统时钟调整步骤:所述摄像装置根据当前的速度对系统时钟进行调整。 所述摄像装置中保存有预设的速度等级及对应的时钟等级, 不同的速度 等级对应不同的速度等级阔值, 不同的时钟等级对应不同的系统时钟频率; 在所述系统时钟调整步骤中, 所述摄像装置将所述当前的速度与所述速 度等级阔值比较后, 确定对应的速度等级及时钟等级, 再根据对应的时钟等 级对系统时钟频率进行调整。
在所述系统时钟调整步骤后, 所述方法还包括摄像头帧率调整步骤: 所 述摄像装置根据调整后的系统时钟频率调整摄像头帧率。
本发明移动终端、 移动终端摄像装置及实现摄像的方法, 根据便携终端 与所取景象的实时速度大小动态调节系统时钟频率大小, 降低应用功耗, 从 而系统时钟不用一直保持在全速运行的状态, 进而达到省电的目的; 系统时 钟动态调整后, 进一步动态调整送给摄像头时钟, 从而动态调整了摄像头的 帧率, 以适应运动速度不同的景象, 运动速度低的景象, 摄像头输出的帧率 较低, 速度高的景象, 摄像头输出的帧率较高, 从而保证用户取景运动中的 景象时有较好的效果(比如, 取景或拍摄运动中的景象时不存在拖影等) 。
附图概述
图 1是本发明移动终端摄像装置的模块结构示意图;
图 2是本发明移动终端实现摄像的方法的示意图;
图 3是移动终端实现录像的流程示意图。
本发明的较佳实施方式
本发明移动终端、 移动终端摄像装置及实现摄像的方法的主要思想是利 用动感芯片实时釆集摄像装置的加速度, 并根据计算的当前速度, 对系统时 钟进行动态调整, 从而系统时钟不用一直保持在全速运行的状态, 进而达到 省电的目的。
如图 1所示, 本发明移动终端的摄像装置包括依次连接动感芯片、 速度 计算模块、 系统时钟调整模块及摄像头帧率调整模块, 其中: 所述动感芯片是能够实时获得加速度的装置或芯片 , 用于釆集摄像装置 的加速度, 并上报给所述速度计算模块;
釆用动感芯片检测加速度的目的是为了使摄像装置的速度尽可能的与取 景景象的速度保持一致或者相差不大, 这样摄像装置与取景景象的相对速度 也就会尽可能的小, 或者处于相对静止的地步, 利于拍摄。
动感芯片可以与摄像头连接以釆集加速度, 也可以自行检测摄像装置的 力口速度。
一般来说,摄像头、摄像装置及具备摄像装置的移动终端是相对不动的, 釆集摄像装置的加速度也即釆集摄像头或移动终端的加速度。
动感芯片在全速运行的情况下, 单芯片功耗在几十到几百微安不等, 一 般而言, 动感芯片的功耗相比拍照、 录像或者视频编码等摄像功能的功耗可 以忽略不记。
所述速度计算模块, 用于根据当前应用场景模式对应的摄像装置初始速 度及所述动感芯片釆集的加速度计算当前的速度, 并通知所述系统时钟调整 模块进行时钟系统时钟调整;
这里所说的摄像装置初始速度是根据拍摄的应用场景模式对应的速度, 例如, 正常模式的摄像装置初始速度为零, 快速模式的初始速度是预先设置 的, 比如可以设置快速模式对应的速度以及时钟等级为最高级, 让系统一开 始就在最高时钟等级工作。
系统时钟调整模块, 用于根据当前的速度对系统时钟进行调整; 还用于 根据所述速度计算模块的降级通知进行时钟等级降级调整; 调整系统时钟频 率后, 若调整后的系统时钟等级不是系统能够正常运行的最低等级, 且定时 间隔内未收到所述速度计算模块上报新的速度, 所述系统时钟调整模块还用 于进行时钟等级降级调整, 还用于通知所述摄像头帧率调整模块进行摄像头 帧率调整。
所述系统时钟调整模块中保存预设的速度等级及对应的时钟等级, 不同 的速度等级对应不同的速度等级阔值, 不同的时钟等级对应不同的系统时钟 频率, 所述系统时钟调整模块进行系统时钟频率调整时, 将所述当前的速度 与所述速度等级阔值比较后, 确定对应的速度等级及时钟等级, 再根据对应 的时钟等级对系统时钟频率进行调整。
根据移动终端的摄像装置速度大小调节系统时钟频率大小, 可以降低应 用功耗, 最终达到省电目的。 当然, 用户可以根据个人喜好选择使用该时钟 动态调整的功能, 或默认设置使用。
所述摄像头帧率调整模块, 用于根据调整后的系统时钟频率调整摄像头 帧率。
摄像头帧率指摄像头输出数据的帧率, 根据当前的速度等级实时调整摄 像头输出数据的帧率, 以适应运动速度不同的景象, 运动速度低的景象, 摄 像头输出的帧率较低, 速度高的景象, 摄像头输出的帧率较高, 从而保证用 户取景运动中的景象时有较好的效果(比如, 取景或拍摄运动中的景象时不 存在托影等) 。
本发明还提供了一种移动终端, 该移动终端包括但不限于具有摄像功能
的相机或手机, 所述移动终端包括以上所述的摄像装置, 其摄像装置的功能 与以上描述相同。 可以理解的是, 本发明所说的摄像装置, 可以与摄像头集 成使用, 也可以分开实现, 另外, 移动终端为了实现完备的设备功能, 还包 括其他信号处理所需的数字基带处理器(DBB )、 模拟基带处理器(ABB ) 、 射频模块、 显示屏等。
如图 2所示, 本发明移动终端实现摄像的方法,基于以上摄像装置实现, 所述方法包括:
步骤 201 : 加速度釆集步骤, 摄像时, 所述摄像装置釆集其自身的加速 度;
步骤 202: 速度计算步骤, 所述摄像装置根据当前应用场景模式对应的 摄像装置初始速度及釆集的加速度计算当前的速度;
步骤 203: 系统时钟调整步骤, 所述摄像装置根据当前的速度对系统时 钟进行调整;
所述摄像装置中保存预设的速度等级及对应的时钟等级, 不同的速度等 级对应不同的速度等级阔值, 不同的时钟等级对应不同的系统时钟频率, 所 述系统时钟调整步骤中, 所述摄像装置将所述当前的速度与所述速度等级阔 值比较后, 确定对应的速度等级及时钟等级, 再根据对应的时钟等级对系统 时钟频率进行调整。
步骤 204: 摄像头帧率调整步骤, 所述摄像装置根据调整后的系统时钟 频率调整摄像头帧率。
为了实现省电的目的, 本发明把系统时钟频率大小分为 N等级, 即对应 N个时钟频率阔值, J_c 时的时钟频率即为系统能够正常运行的最小时钟 频率, L _clkN―、 即为系统全速运行的时钟频率。
为了对应系统时钟频率等级, 本发明把摄像头移动速度也分为 N级, 阔 值分别为 0到^— 等级为 J_v。到 J _VAM。
用户在进行拍照、 录像或者视频编码的时候, 首先可以根据摄像头相对
所取景景象的速度设置对应的应用场景 (比如正常模式、 快速模式等) , 即 对应的是设置摄像头的初始速度 ^, 系统把 与速度等级阔值进行比较, 从 而设定系统对应的速度等级, 进而确定系统的时钟等级, 实时调整时钟频率。 默认情况下, ^ = 0。 录像或编码过程中, 系统会根据动感芯片上报的加速度 计算当前速度 并根据不同等级的速度阔值确定速度所在等级, 并进而实时 调整系统时钟频率大小, 从而不用系统时钟一直保持在全速运行的状态, 以 达到省电并实时调整帧率的目的。
本发明所说的摄像包括拍照、 录像机视频编码 (例如: 可视电话或者 videoshare )等与摄像头摄取影像有关的操作, 以下以录像为例, 对本发明摄 像实现流程进行详细说明:
下面结合图 3以录像为例, 取 N = 5级, 进行说明:
步骤 301 : 用户进入录像界面的同时打开动感芯片; 然后根据用户所设 置的应用场景, 即设置摄像头相对所录制景象的速度设置初始速度 , 系统 把 与速度等级阈值进行比较, 从而设定系统对应的速度等级 J _v , 进而确 定系统的时钟等级 J _c/ 实时调整时钟频率。 默认情况下 =0, 速度等级为 L _v0级, 则系统时钟处于 J _c 。等级。
步骤 302: 按下录制键, 开始录像;
步骤 303 : —旦动感芯片检查到移动加速度, 则会把收集到的加速度 a 主动上报给速度计算模块;
步骤 304:速度计算模块根据加速度 a计算当前当前应用场景模式对应的 移动速度 V, 系统时钟调整模块根据速度阔值确定速度等级 N=5; 根据速度 等级自行调整时钟大小, 最大时钟频率等级为 J _c/ — , ( N=5 ) ; 并同步调整 给摄像头的时钟频率, 从而调整了摄像头的帧率以适应运动中的景象;
如果 i^ i , , ( Ν=5 ) , 则统一认为速度处于第 Ν级(Ν=5 ) 。
如果速度或者时钟等级已经是最高级即第 Ν级, 则即便再次检测到加速 度, 速度或者时钟等级还是保持在第 Ν级。
步骤 305: 系统时钟调整模块判断时钟和速度等级调整到某个非 0等级, 则启动定时器, 定时间隔 time— interval , 否则不启动定时器;
步骤 306: 在定时间隔 time— interval内, 动感芯片检测到新的加速度 a, 则转步骤 303 , 否则转步骤 307;
步骤 307: 如果在定时时间到时, 速度计算模块没有收到动感芯片上报 的加速度, 系统时钟调整模块也没有收到新的速度, 则系统时钟调整模块把 时钟等级以及速度等级自动降一级, 并转步骤 305;
自动降级可以防止摄像装置一直处于较高的时钟频率运行模式下, 同时 还可以进一步达到省电的效果。
系统时钟降级时, 给摄像头的时钟频率也对应的降低, 同时调整摄像头 的帧率。
停止录像, 退出。 般的精神范围下, 本发明不局限于特定的细节和设备
本发明移动终端、 移动终端摄像装置及实现摄像的方法, 根据移动终端 速度大小动态调节系统时钟频率大小, 降低应用功耗, 从而系统时钟不用一 直保持在全速运行的状态, 进而达到省电的目的; 系统时钟动态调整后, 进 一步动态调整送给摄像头时钟, 从而动态调整了摄像头的帧率, 以适应运动 速度不同的景象, 运动速度低的景象, 摄像头输出的帧率较低, 速度高的景 象, 摄像头输出的帧率较高, 从而保证用户取景运动中的景象时有较好的效 果(比如, 取景或拍摄运动中的景象时不存在拖影等) 。
工业实用性
本发明移动终端、 移动终端摄像装置及实现摄像的方法, 根据便携终端 与所取景象的实时速度大小动态调节系统时钟频率大小, 降低应用功耗, 从 而系统时钟不用一直保持在全速运行的状态, 进而达到省电的目的; 系统时 钟动态调整后, 进一步动态调整送给摄像头时钟, 从而动态调整了摄像头的 帧率, 以适应运动速度不同的景象, 运动速度低的景象, 摄像头输出的帧率 较低, 速度高的景象, 摄像头输出的帧率较高, 从而保证用户取景运动中的 景象时有较好的效果(比如, 取景或拍摄运动中的景象时不存在拖影等) 。
Claims
1、 一种移动终端摄像装置,所述装置包括依次连接的动感芯片、速度计 算模块及系统时钟调整模块,
所述动感芯片设置为: 釆集所述摄像装置加速度, 并上报给所述速度计 算模块;
所述速度计算模块设置为: 根据当前应用场景模式对应的摄像装置初始 速度及所述动感芯片釆集的加速度计算当前的速度, 并通知所述系统时钟调 整模块进行时钟系统时钟调整;
系统时钟调整模块设置为: 根据当前的速度对系统时钟进行调整。
2、 如权利要求 1所述的装置, 其中, 所述系统时钟调整模块是设置为: 保存预设的速度等级及对应的时钟等级, 不同的速度等级对应不同的速度等 级阔值, 不同的时钟等级对应不同的系统时钟频率, 将所述当前的速度与所 述速度等级阔值比较后, 确定对应的速度等级及时钟等级, 再根据对应的时 钟等级对系统时钟频率进行调整。
3、 如权利要求 1至 2中任一项所述的装置,其中, 所述装置还包括与所 述系统时钟调整模块相连接的摄像头帧率调整模块 ,
所述系统时钟调整模块还设置为: 调整时钟频率后, 通知所述摄像头帧 率调整模块;
所述摄像头帧率调整模块设置为: 根据调整后的系统时钟频率调整摄像 头帧率。
4、 一种移动终端,所述移动终端包括用于摄像的摄像装置, 所述摄像装 置包括依次连接的动感芯片、 速度计算模块及系统时钟调整模块,
所述动感芯片设置为: 釆集摄像装置的加速度, 并上报给所述速度计算 模块;
所述速度计算模块设置为: 根据当前应用场景模式对应的摄像装置初始 速度及所述动感芯片釆集的加速度计算当前的速度, 并通知所述系统时钟调 整模块进行时钟系统时钟调整;
系统时钟调整模块设置为: 根据当前的速度对系统时钟进行调整。
5、 如权利要求 4所述的移动终端,其中, 所述系统时钟调整模块是设置 为: 保存预设的速度等级及对应的时钟等级, 不同的速度等级对应不同的速 度等级阔值, 不同的时钟等级对应不同的系统时钟频率, 将所述当前的速度 与所述速度等级阔值比较后, 确定对应的速度等级及时钟等级, 再根据对应 的时钟等级对系统时钟频率进行调整。
6、 如权利要求 4所述的移动终端,其中, 所述装置还包括与所述系统时 钟调整模块相连接的摄像头帧率调整模块 ,
所述系统时钟调整模块还设置为: 调整时钟频率后通知所述摄像头帧率 调整模块进行摄像头帧率调整;
所述摄像头帧率调整模块设置为: 根据调整后的系统时钟频率调整摄像 头帧率。
7、 如权利要求 4至 6中任一项所述的移动终端,其中, 所述系统时钟调 整模块还设置为: 若调整后的系统时钟等级不是系统能够正常运行的最低等 级, 且定时间隔内未收到所述速度计算模块上报新的速度, 则进行时钟等级 降级调整。
8、 一种移动终端实现摄像的方法, 所述方法包括:
加速度釆集步骤: 摄像时, 摄像装置釆集其自身的加速度;
速度计算步骤: 所述摄像装置根据当前应用场景模式对应的摄像装置初 始速度及釆集的加速度计算当前的速度;
系统时钟调整步骤:所述摄像装置根据当前的速度对系统时钟进行调整。
9、 如权利要求 8所述的方法, 其中,
所述摄像装置中保存有预设的速度等级及对应的时钟等级, 不同的速度 等级对应不同的速度等级阔值, 不同的时钟等级对应不同的系统时钟频率; 在所述系统时钟调整步骤中, 所述摄像装置将所述当前的速度与所述速 度等级阔值比较后, 确定对应的速度等级及时钟等级, 再根据对应的时钟等 级对系统时钟频率进行调整。
10、 如权利要求 8或 9所述的方法,其中,在所述系统时钟调整步骤后, 所述方法还包括摄像头帧率调整步骤: 所述摄像装置根据调整后的系统时钟 频率调整摄像头帧率。
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