WO2017096815A1 - 抗照相机mipi总线高次谐波干扰的方法、装置及移动终端 - Google Patents

抗照相机mipi总线高次谐波干扰的方法、装置及移动终端 Download PDF

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Publication number
WO2017096815A1
WO2017096815A1 PCT/CN2016/088663 CN2016088663W WO2017096815A1 WO 2017096815 A1 WO2017096815 A1 WO 2017096815A1 CN 2016088663 W CN2016088663 W CN 2016088663W WO 2017096815 A1 WO2017096815 A1 WO 2017096815A1
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WIPO (PCT)
Prior art keywords
frequency
mobile terminal
mipi bus
camera
radio frequency
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PCT/CN2016/088663
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English (en)
French (fr)
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刘禠阳
刘东海
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Le Holdings Beijing Co Ltd
Lemobile Information Technology (Beijing) Co Ltd
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Le Holdings Beijing Co Ltd
Lemobile Information Technology (Beijing) Co Ltd
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Priority to US15/244,773 priority Critical patent/US20170171367A1/en
Publication of WO2017096815A1 publication Critical patent/WO2017096815A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus

Definitions

  • the present application relates to the field of mobile application processors, and in particular, to a method, device and mobile terminal for resisting harmonic interference.
  • the increase in camera pixels will result in a larger amount of data, which in turn requires the MIPI (Mobile Industry Processor Interface) bus for transmitting data to operate at a higher frequency, which inevitably occurs during operation.
  • MIPI Mobile Industry Processor Interface
  • Higher harmonics some of which will fall within the RF communication band, and are received by the mobile terminal's own antenna, which ultimately leads to a decrease in the receiving sensitivity of the antenna. In severe cases, it may even affect the normal call of the mobile terminal. .
  • the existing solution is to add a high-frequency filter circuit (usually a common mode choke) to the circuit design, and filter the high-order harmonics through the high-frequency filter circuit.
  • a high-frequency filter circuit usually a common mode choke
  • the inventor of the present application found in the research that the greater the attenuation of the high-frequency filter circuit, the better the filtering effect on the high-order filter, but also the greater the influence on the waveform of the MIPI signal, resulting in the quality of the MIPI signal being unqualified.
  • the smaller the attenuation of the high-frequency filter circuit the smaller the influence on the waveform of the MIPI signal, but the worse the filtering effect on the high-order filter.
  • the present application provides a method, a device and a mobile terminal for resisting high-order harmonic interference of a camera MIPI bus. Under the premise of high-order harmonic interference on the MIPI bus, the quality of the MIPI signal can also be ensured. Affected.
  • a method for combating high-order harmonic interference of a camera MIPI bus in which a correspondence between a radio frequency communication band usable by the mobile terminal and a safety frequency of a camera MIPI bus is prestored in the mobile terminal a relationship, wherein a higher harmonic generated when the camera MIPI bus operates at the safe frequency does not fall within a corresponding range of the radio frequency communication band, the method comprising: detecting a radio frequency communication currently used by the mobile terminal a frequency band; searching for a safe frequency of a camera MIPI bus corresponding to a radio frequency communication band currently used by the mobile terminal according to the correspondence relationship; setting a current operating frequency of the camera MIPI bus to a searched safe frequency of the camera MIPI bus.
  • determining a correspondence between a radio frequency communication band that can be used by the mobile terminal and a security frequency of a camera MIPI bus includes: setting, for the camera MIPI bus, any radio frequency communication band that can be used by the mobile terminal a first operating frequency; determining, according to the first operating frequency, a frequency of a higher harmonic generated by the camera MIPI bus; if the frequency of the higher harmonic does not fall within the range of any one of the radio frequency communication bands, The first operating frequency acts as a safe frequency corresponding to any one of the radio frequency communication bands.
  • one or at least two secure frequencies are determined for the same radio frequency communication band.
  • determining the frequency of the higher harmonic generated by the camera MIPI bus according to the first operating frequency comprises: calculating a quarter frequency of the operating frequency of the camera MIPI bus or 1/12 of a fraction a frequency frequency; and calculating a frequency of the frequency of the frequency division and as a frequency of higher harmonics generated by the camera MIPI bus.
  • the detecting, by the mobile terminal, the radio frequency communication frequency band currently used by the mobile terminal comprises: identifying a network type of the current network; and determining, according to the network type, a radio frequency communication frequency band currently used by the mobile terminal.
  • the network type includes: GSM850, GSM900, WI-FI2.4G, GPS, 3G, 4G.
  • an apparatus for resisting high-order harmonic interference of a camera MIPI bus includes: a detecting unit, configured to detect a radio frequency communication band currently used by the mobile terminal; and an inquiry unit, configured to search for a current relationship with the mobile terminal according to a correspondence between a radio frequency communication band that can be used by the mobile terminal and a safety frequency of the camera MIPI bus a safety frequency of the camera MIPI bus corresponding to the radio frequency communication band, wherein a higher harmonic generated when the camera MIPI bus operates at the safe frequency does not fall within a corresponding range of the radio frequency communication band; It is used to set the current operating frequency of the camera MIPI bus to the searched safe frequency of the camera MIPI bus.
  • the detecting unit includes: an identifying module, configured to identify a network type currently used by the mobile terminal; and a determining module, configured to determine the radio frequency communication frequency band according to the network type.
  • the network type includes: GSM850, GSM900, WI-FI2.4G, GPS, 3G, 4G.
  • a mobile terminal comprising a memory and a processor, wherein the memory is configured to store a correspondence between a radio frequency communication band usable by the mobile terminal and a safety frequency of a camera MIPI bus a relationship, wherein a higher harmonic generated when the camera MIPI bus operates at the safe frequency does not fall within a corresponding range of the radio frequency communication band;
  • the processor is configured to detect a radio frequency communication frequency band currently used by the mobile terminal, and search for a safe frequency of a camera MIPI bus corresponding to a radio frequency communication frequency band currently used by the mobile terminal according to the correspondence relationship stored in the memory, and the camera The current operating frequency of the MIPI bus is adjusted to find the safe frequency of the camera MIPI bus.
  • a method for resisting harmonic interference provided by an embodiment of the present application, wherein a correspondence between a radio frequency communication band that can be used by the mobile terminal and a safety frequency of a camera MIPI bus is prestored in the mobile terminal, where The higher harmonics generated when the camera MIPI bus operates at the safe frequency does not fall within the corresponding range of the radio frequency communication band, the method comprising: detecting a radio frequency communication band currently used by the mobile terminal; The relationship finds a safe frequency of the camera MIPI bus corresponding to the radio frequency communication band currently used by the mobile terminal; the current operating frequency of the camera MIPI bus is set to the searched safe frequency of the camera MIPI bus.
  • an operating frequency of the camera MIPI bus is set to obtain a safe frequency of the network radio frequency communication band. Used on mobile terminals When the operating frequency of the camera MIPI bus is set to the found safe frequency, harmonic interference of the camera frequency is prevented from occurring at the source.
  • FIG. 1 is a schematic structural diagram of a prior art mobile terminal using an MIPI interface
  • FIG. 2 is a flow chart of a method for resisting high-order harmonic interference of a camera MIPI bus according to an embodiment of the present application
  • FIG. 3 is a flowchart of a method for determining a correspondence relationship between a radio frequency communication band that can be used by the mobile terminal and a security frequency of a camera MIPI bus according to an embodiment of the present application;
  • FIG. 4 is a schematic diagram of a connection between a device for resisting high-order harmonic interference of a camera MIPI bus and a camera driving chip according to an embodiment of the present application;
  • FIG. 5 is a structural diagram of an apparatus for resisting harmonic interference according to an embodiment of the present application.
  • FIG. 6 is a block diagram schematically showing a computing device for performing a method of high harmonic interference against a camera MIPI bus in accordance with an embodiment of the present application
  • FIG. 7 schematically illustrates a memory unit of program code for maintaining or carrying a method of implementing higher harmonic interference against an camera MIPI bus in accordance with an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of a prior art mobile terminal using an MIPI interface.
  • a baseband chip 100, a display driving chip 101, and a camera driving core of a mobile terminal are respectively shown.
  • Slice 102 the baseband chip 100 reads the configuration of each chip from the static storage area, and activates the display driving chip 101 and the camera driving chip 102 according to the chip configuration.
  • the baseband chip 100 and the display driver chip 101 communicate via DSI (Display Serial Interface) of the MIPI protocol, and the baseband chip 100 and the camera driver chip 102 communicate via a CSI (Camera Serial Interface).
  • DSI Display Serial Interface
  • CSI Camera Serial Interface
  • DSI defines a high-speed serial interface between the processor and the display module.
  • CSI defines a high-speed serial interface between the processor and the camera module.
  • Communication between the baseband chip 100 and the camera driver chip 102 may interfere with the communication band of the radio frequency network currently used by the mobile terminal.
  • Table 1-1 lists some of the communication bands for the RF network used by mobile terminals.
  • the mobile terminal When the mobile terminal communicates, if the higher harmonic generated by the operating frequency of the camera MIPI bus falls within the above frequency band, it may be received by the antenna, causing poor communication of the mobile terminal.
  • the embodiment of the present application provides a method for resisting high-order harmonic interference of the camera MIPI bus based on the prior art, including steps 201-203.
  • a radio frequency communication band currently used by the mobile terminal is detected.
  • the two-dimensional relationship table of the network type and the communication frequency band is stored in the memory of the mobile terminal, as shown in Table 1-1.
  • the communication frequency band of the mobile terminal can be obtained according to the type of the radio network used by the mobile terminal.
  • the mobile communication terminal uses the GSM900 frequency band for communication, and the reception frequency ranges from 925.2 MHz to 959.8 MHz.
  • step 202 the secure frequency of the camera MIPI bus corresponding to the radio frequency communication band currently used by the mobile terminal is searched according to the correspondence relationship.
  • the correspondence between the radio frequency communication band usable by the mobile terminal and the safety frequency of the camera MIPI bus is pre-stored in the memory in the mobile terminal
  • the relationship in which the higher harmonics generated when the camera MIPI bus operates at a safe frequency does not fall within the corresponding range of the radio frequency communication band.
  • the current safe frequency of a mobile terminal is obtained from the relationship table.
  • step 203 the current operating frequency of the camera MIPI bus is set to the safe frequency of the found camera MIPI bus.
  • determining the secure frequency of the network radio frequency communication band and the camera MIPI bus includes steps 301-304.
  • a first operating frequency is set for the camera MIPI bus for a radio frequency communication band that can be used by the mobile terminal.
  • the radio frequency communication band currently used by the mobile terminal is 925.2 MHz-959.8 MHz
  • the camera MIPI bus for the mobile terminal is 800 MHz.
  • the 800 MHz is a value set by the engineer according to design experience.
  • step 302 the frequency of the higher harmonics generated by the camera MIPI bus is determined based on the first operating frequency.
  • the frequency of the higher harmonics generated by the camera MIPI bus is tested by a higher harmonic test device.
  • the baseband chip and the camera driver chip's CSI interface define 1 clock Lane and 1-4 data Lanes to transmit data.
  • the specific use of the 1/4 division or 1/12 division calculation is determined by the number of lanes of the camera MIPI bus.
  • the RGB (Red, Green, Blue, Red, Green, Blue) signals on the MIPI line are transmitted in parallel.
  • the number of MIPI lines is 2 groups, the same color component (R or G or B) appears once every 3 clock cycles;
  • the number of MIPI lines is 3 groups, the same color component (R or G or B) appears once every 1 clock cycle;
  • the number of MIPI lines is 4 groups, the same color component (R or G or B) every 3 A repetition occurs in the clock cycle, and so on.
  • MIPI line When it is 2 groups, the MIPI interference interval is 1/12 of the MIPI frequency; when the MIPI line is 3 groups, the MIPI interference interval is 1/4 of the MIPI frequency; when the MIPI line is 4 groups, the MIPI interference interval is MIPI. The frequency is divided by 1/12, and so on.
  • step 303 it is determined whether the frequency of the higher harmonics falls within the range of the currently used radio frequency communication band. If the frequency without the higher harmonics does not fall within the current radio frequency communication frequency range, step 304 is performed.
  • step 304 the first operating frequency is taken as the safe frequency corresponding to the currently used radio frequency communication band.
  • the embodiment of the present application provides a device for resisting high-order harmonic interference of the camera MIPI bus, as shown in FIG. 4 and FIG. Shown.
  • the anti-high harmonic interference device 4032 obtains a correspondence relationship between the radio frequency communication frequency band and the safety frequency of the camera MIPI bus, and obtains the safety frequency of the current camera MIPI bus of the mobile terminal according to the correspondence relationship, and passes the camera driving chip.
  • the 4033 sets the operating frequency of the current camera MIPI bus to a safe frequency.
  • Fig. 5 is a structural diagram of an apparatus for resisting harmonic interference according to an embodiment of the present application.
  • the above apparatus includes a detecting unit 501, a query unit 502, and a setting unit 503.
  • the detecting unit 501 detects a radio frequency communication band currently used by the mobile terminal.
  • the query unit 502 is connected to the detecting unit 501, and configured to search for a safe frequency of the camera MIPI bus corresponding to the current radio frequency communication band of the mobile terminal according to the correspondence between the radio frequency communication band that can be used by the mobile terminal and the secure frequency of the camera MIPI bus. Wherein, the higher harmonics generated when the camera MIPI bus operates at the safe frequency does not fall within the corresponding range of the radio frequency communication band.
  • the setting unit 503 sets the current operating frequency of the camera MIPI bus to the safe frequency of the MIPI bus found by the query unit 502.
  • the detecting unit 501 includes: an identifying module, configured to identify a network type currently used by the mobile terminal, and a determining module, configured to determine the radio frequency communication frequency band according to the network type.
  • Network types include: GSM850, GSM900, WI-FI2.4G, GPS, 3G, 4G.
  • the method for resisting harmonic interference in the embodiment of the present application provides a mobile terminal for implementing the foregoing method, including a memory and a processor.
  • a memory storing a correspondence between a radio frequency communication band that can be used by the mobile terminal and a safety frequency of a camera MIPI bus, wherein a high harmonic generated when the camera MIPI bus operates at the safe frequency does not fall within the corresponding range of the radio frequency communication band;
  • the processor detects a radio frequency communication band currently used by the mobile terminal, and searches for a safe frequency of the camera MIPI bus corresponding to the radio frequency communication band currently used by the mobile terminal according to the correspondence relationship stored in the memory, and the current MIPI bus of the camera The operating frequency is adjusted to find the safe frequency of the camera MIPI bus.
  • a method for resisting high-order harmonic interference of a camera MIPI bus provided by an embodiment of the present application, wherein a correspondence between a radio frequency communication band that can be used by the mobile terminal and a safety frequency of a camera MIPI bus is pre-stored in the mobile terminal, The high-order harmonic generated when the camera MIPI bus operates at the safe frequency does not fall within the corresponding radio frequency communication frequency band, and the method includes: detecting a radio frequency communication frequency band currently used by the mobile terminal; And determining, according to the correspondence, a secure frequency of the camera MIPI bus corresponding to the radio frequency communication band currently used by the mobile terminal; setting a current operating frequency of the camera MIPI bus to the searched safe frequency of the camera MIPI bus.
  • the safe frequency of the network radio frequency communication band is determined, and when the mobile terminal is used, the operating frequency of the camera MIPI bus is set to the found safe frequency, and the camera is avoided from the source. Harmonic interference of the frequency occurs.
  • modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment.
  • the modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components.
  • any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined.
  • Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.
  • the various component embodiments of the present application can be implemented in hardware, or in a software module running on one or more processors, or in a combination thereof.
  • a microprocessor or digital signal processor may be used in practice to implement some or all of the functionality of some or all of the components in accordance with embodiments of the present application.
  • the application can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein.
  • Such a program implementing the present application may be stored on a computer readable medium or may be in the form of one or more signals. Such a signal can It is available for download from an Internet website, or on a carrier signal, or in any other form.
  • Figure 6 illustrates a computing device that can implement a resource processing method in accordance with the present application.
  • the computing device traditionally includes a processor 610 and a computer program product or computer readable medium in the form of a storage device 620.
  • Storage device 620 can be an electronic memory such as a flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • Storage device 620 has a storage space 630 that stores program code 631 for performing any of the method steps described above.
  • storage space 630 storing program code may include respective program code 631 for implementing various steps in the above methods, respectively.
  • the program code can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as a hard disk, a compact disk (CD), a memory card, or a floppy disk.
  • a computer program product is typically a portable or fixed storage unit such as that shown in FIG.
  • the storage unit may have storage segments, storage spaces, and the like that are similarly arranged to storage device 620 in the computing device of FIG.
  • the program code can be compressed, for example, in an appropriate form.
  • the storage unit comprises computer readable code 631' for performing the method steps according to the present application, ie code that can be read by a processor such as 610, which when executed by the computing device causes the computing device Perform the various steps in the method described above.

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Abstract

本申请实施例提供的一种抗照相机MIPI总线的高次谐波干扰的方法、装置及移动终端，在移动终端中预存有所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，照相机MIPI总线以安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内，所述方法包括：检测移动终端当前使用的射频通信频段；根据对应关系查找与移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率；将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。

Description

抗照相机MIPI总线高次谐波干扰的方法、装置及移动终端
相关申请的交叉参考
本申请要求于2015年12月11日提交中国专利局、申请号为201510920897.4、发明名称为“抗照相机MIPI总线高次谐波干扰的方法、装置及移动终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及到移动应用处理器领域，具体涉及抗高次谐波干扰的方法、装置及移动终端。
背景技术
移动终端技术的发展使得高分辨率的屏幕和高像素的照相机已经成为了必备。
照相机像素的提高将产生更大的数据量，进而要求用来传输数据的MIPI(Mobile Industry Processor Interface，移动产业处理器接口)总线的工作频率越来越高，其工作时就不可避免的会产生高次谐波，其中一些高次谐波就会落在射频通信频带范围内，从而被移动终端自身的天线接收到，最终导致天线的接收灵敏度降低，严重时甚至会影响到移动终端的正常通话。
现有的解决方法是：在电路设计中加入高频滤波电路(通常是共模扼流圈)，通过高频滤波电路将高次谐波过滤掉。但是，本申请的发明人在研究中发现：高频滤波电路的衰减越大，对高次滤波的过滤效果越好，但同时也对MIPI信号的波形影响越大，导致MIPI信号的质量不合格；高频滤波电路的衰减越小，对MIPI信号的波形影响越小，但同时对高次滤波的过滤效果也就越差。
发明内容
有鉴于此，本申请提供一种抗照相机MIPI总线的高次谐波干扰的方法、装置及移动终端，在抗MIPI总线上的高次谐波干扰的前提下，还可以保证MIPI信号的质量不受影响。
根据本申请的第一方面，提供一种抗照相机MIPI总线高次谐波干扰的方法，在移动终端中预存有所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内，所述方法包括：检测移动终端当前使用的射频通信频段；根据所述对应关系查找与移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率；将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。
可选地，确定所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系包括：针对所述移动终端可使用的任意一个射频通信频段，为所述照相机MIPI总线设置第一工作频率；根据所述第一工作频率确定所述照相机MIPI总线产生的高次谐波的频率；如果所述高次谐波的频率没有落在所述任意一个射频通信频段范围内，将所述第一工作频率作为与所述任意一个射频通信频段对应的安全频率。
可选地，针对同一个射频通信频段，确定一个或至少两个安全频率。
可选地，所述根据所述第一工作频率确定所述照相机MIPI总线产生的高次谐波的频率包括：计算所述照相机MIPI总线的工作频率的1/4分频频率或1/12分频频率；以及计算所述分频频率的倍频频率并作为所述照相机MIPI总线产生的高次谐波的频率。
可选地，所述检测移动终端当前使用的射频通信频段包括：识别当前网络的网络类型；以及根据所述网络类型确定所述移动终端当前使用的射频通信频段。
可选地，所述的网络类型包括：GSM850，GSM900，WI-FI2.4G，GPS，3G，4G。
根据本申请的第二方面，提供抗照相机MIPI总线高次谐波干扰的装置， 包括：检测单元，用于检测移动终端当前使用的射频通信频段；查询单元，用于根据移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，查找与移动终端当前的射频通信频段对应的照相机MIPI总线的安全频率，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内；设置单元，用于将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。
可选地，所述检测单元包括：识别模块，用于识别移动终端当前使用的网络类型；确定模块，用于根据所述网络类型确定所述射频通信频段。
可选地，所述的网络类型包括：GSM850，GSM900，WI-FI2.4G，GPS，3G，4G。
根据本申请的第三方面，提供一种移动终端，包括存储器和处理器，其中，所述存储器，用于存储所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内；
所述处理器，用于检测移动终端当前使用的射频通信频段，根据所述存储器存储的所述对应关系查找与所述移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率，将照相机MIPI总线的当前工作频率调整为查找到的所述照相机MIPI总线的安全频率。
本申请实施例提供的一种抗高次谐波干扰的方法，在移动终端中预存有所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内，所述方法包括：检测移动终端当前使用的射频通信频段；根据所述对应关系查找与移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率；将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。进一步地，针对移动终端可使用的任意网络射频通信频段，设置一个照相机MIPI总线的工作频率，以获得该网络射频通信频段的安全频率。在移动终端使用 时，将照相机MIPI总线的工作频率设置为查找到的安全频率，从源头避免照相机频率的谐波干扰发生。
附图概述
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本申请的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是现有技术的移动终端使用MIPI接口的结构示意图；
图2是本申请实施例的一种抗照相机MIPI总线的高次谐波干扰的方法的流程图；
图3是本申请实施例的所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系的确定方法的流程图；
图4是本申请实施例的抗照相机MIPI总线的高次谐波干扰的装置与照相机驱动芯片的连接示意图；
图5是本申请实施例的抗高次谐波干扰的装置的结构图；
图6示意性地示出了用于执行根据本申请实施例的抗照相机MIPI总线的高次谐波干扰的方法的计算设备的框图；
图7示意性地示出了用于保持或者携带实现根据本申请实施例的抗照相机MIPI总线的高次谐波干扰的方法的程序代码的存储单元。
本申请的较佳实施方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
图1是现有技术的移动终端使用MIPI接口的结构示意图。在图1中，分别示出了移动终端的基带芯片100、显示器驱动芯片101、照相机驱动芯 片102。在移动终端启动时，基带芯片100从静态存储区域中读取各个芯片的配置，根据芯片配置分别启动显示器驱动芯片101、照相机驱动芯片102。
其中，基带芯片100和显示器驱动芯片101通过MIPI协议的DSI(Display Serial Interface，显示串行接口)通信，基带芯片100和照相机驱动芯片102通过CSI(Camera Serial Interface，摄像串行接口)通信。DSI定义了一个位于处理器和显示模组之间的高速串行接口，CSI定义了一个位于处理器和摄像模组之间的高速串行接口。
基带芯片100和照相机驱动芯片102的通信可能会对移动终端当前使用的射频网络的通信频段造成干扰。表格1-1列出了移动终端使用的射频网络的部分通信频段。
表1-1
Figure PCTCN2016088663-appb-000001
移动终端通信时，照相机MIPI总线的工作频率产生的高次谐波如果落入上述频段之内，则可能被天线接收，造成移动终端通信不良。
由此，如图2所述，本申请实施例在现有技术的基础上提供一种抗照相机MIPI总线的高次谐波干扰的方法，包括步骤201-步骤203。
在步骤201中，检测移动终端当前使用的射频通信频段。移动终端的存储器内存储有网络类型和通信频段的二维关系表，如表格1-1所示。在一个优选的实施例中，根据移动终端所使用的射频网络类型，可以获得移动终端的通信频段，例如，移动通信终端使用GSM900频段进行通信，其接收频率的范围为925.2MHz-959.8MHz。
在步骤202中，根据对应关系查找与移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率。在移动终端中的存储器中预存有所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应 关系，其中，照相机MIPI总线以安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内。在本步骤中，根据步骤202中获得移动终端当前使用的射频通信频段，从关系表中获取一个移动终端当前的安全频率。
在步骤203中，将照相机MIPI总线的当前工作频率设置为查找到的照相机MIPI总线的安全频率。
在一个可选的实施例中，如图3所示，确定网络射频通信频段和照相机MIPI总线的安全频率包括步骤301-步骤304。
在步骤301中，针对所述移动终端可使用的一个射频通信频段，为照相机MIPI总线设置第一工作频率。例如移动终端当前使用的射频通信频段为925.2MHz-959.8MHz，为移动终端的照相机MIPI总线为800MHz,800MHz是工程师根据设计经验设置的值。
在步骤302中，根据第一工作频率确定照相机MIPI总线产生的高次谐波的频率。通过高次谐波的测试装置，测试接收到照相机MIPI总线产生的高次谐波的频率。
在一个可选的实施例中，通过计算照相机MIPI总线的工作频率的1/4分频频率或1/12分频频率，然后计算分频频率的倍频频率并作为照相机MIPI总线产生的高次谐波的频率。
基带芯片和照相机驱动芯片的CSI接口定义1个时钟Lane(通道)和1-4个数据Lane(通道)传输数据。具体使用1/4分频或1/12分频计算由照相机MIPI总线的通道数目(lane)确定。MIPI线路上的RGB(Red、Green、Blue，红、绿、蓝)信号并行传输，当MIPI线路数为2组时，相同颜色分量(R或G或B)每3个时钟周期出现一次重复；当MIPI线路数为3组时，相同颜色分量(R或G或B)每1个时钟周期出现一次重复；当MIPI线路数为4组时，相同颜色分量(R或G或B)每3个时钟周期出现一次重复，以此类推。每个时钟周期内可以传输2个颜色分量数据，每个颜色分量数据包含8个字节，所以当颜色分量数据每3个时钟周期重复一次时，MIPI干扰间隔＝MIPI频率*2/(8*3)＝MIPI频率/12；当颜色分量数据每1个时钟周期重复一次时，MIPI干扰间隔＝MIPI频率*2/(8*1)＝MIPI频率/4。所以，MIPI线路 为2组时，MIPI干扰间隔是MIPI频率的1/12分频；MIPI线路为3组时，MIPI干扰间隔是MIPI频率的1/4分频；MIPI线路为4组时，MIPI干扰间隔是MIPI频率的1/12分频，以此类推。
在步骤303中，判断高次谐波的频率是否落在当前使用的射频通信频段范围内。如果没有高次谐波的频率没有落在当前射频通信频段范围内，执行步骤304。
在步骤304中，将第一工作频率作为与当前使用的射频通信频段对应的安全频率。
和图2所示的抗照相机MIPI总线的高次谐波干扰的方法的流程图相对应，本申请实施例提供一种抗照相机MIPI总线的高次谐波干扰的装置，如图4和图5所示。
图4是本申请实施例的抗照相机MIPI总线的高次谐波干扰的装置与照相机驱动芯片的连接示意图。在图4中，抗高次谐波干扰的装置4032获取射频通信频段与照相机MIPI总线的安全频率之间的对应关系，根据对应关系获得移动终端当前的照相机MIPI总线的安全频率，通过照相机驱动芯片4033将当前照相机MIPI总线的工作频率设置为安全频率。
图5是本申请实施例的抗高次谐波干扰的装置的结构图。上述装置包括检测单元501、查询单元502和设置单元503。
检测单元501检测移动终端当前使用的射频通信频段。
查询单元502与检测单元501连接，用于根据移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系查找与移动终端当前的射频通信频段对应的照相机MIPI总线的安全频率，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内。
设置单元503将照相机MIPI总线的当前工作频率设置为查询单元502查找到的MIPI总线的安全频率。
可选地，检测单元501包括：识别模块，用于识别移动终端当前使用的网络类型；确定模块，用于根据所述网络类型确定所述射频通信频段。上述 网络类型包括：GSM850，GSM900，WI-FI2.4G，GPS，3G，4G。
本申请实施例的抗高次谐波干扰的方法，提供一种移动终端用于实现上述方法，包括存储器和处理器，
存储器，存储所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内；
处理器，检测移动终端当前使用的射频通信频段，根据所述存储器存储的所述对应关系查找与所述移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率，将照相机MIPI总线的当前工作频率调整为查找到的所述照相机MIPI总线的安全频率。
本申请实施例提供的一种抗照相机MIPI总线的高次谐波干扰的方法，在移动终端中预存有所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内，所述方法包括：检测移动终端当前使用的射频通信频段；根据所述对应关系查找与移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率；将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。进一步地，针对移动终端可使用的任意网络射频通信频段，确定该网络射频通信频段的安全频率，在移动终端使用时，将照相机MIPI总线的工作频率设置为查找到的安全频率，从源头避免照相机频率的谐波干扰发生。
在此提供的算法和显示不与任何特定计算机、虚拟系统或者其它设备固有相关。各种通用系统也可以与基于在此的示教一起使用。根据上面的描述，构造这类系统所要求的结构是显而易见的。此外，本申请也不针对任何特定编程语言。应当明白，可以利用各种编程语言实现在此描述的本申请的内容，并且上面对特定语言所做的描述是为了披露本申请的最佳实施方式。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本申请的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
类似地，应当理解，为了精简本公开并帮助理解各个发明方面中的一个或多个，在上面对本申请的示例性实施例的描述中，本申请的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开的方法解释成反映如下意图：即所要求保护的本申请要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说，如下面的权利要求书所反映的那样，发明方面在于少于前面公开的单个实施例的所有特征。因此，遵循具体实施方式的权利要求书由此明确地并入该具体实施方式，其中每个权利要求本身都作为本申请的单独实施例。
本领域那些技术人员可以理解，可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件，以及此外可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者单元中的至少一些是相互排斥之外，可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述，本说明书(包括伴随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。
此外，本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本申请的范围之内并且形成不同的实施例。例如，在下面的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。
本申请的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本申请实施例中的一些或者全部部件的一些或者全部功能。本申请还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本申请的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可 以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图6示出了可以实现根据本申请的资源处理方法的计算设备。该计算设备传统上包括处理器610和以存储设备620形式的计算机程序产品或者计算机可读介质。存储设备620可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储设备620具有存储用于执行上述方法中的任何方法步骤的程序代码631的存储空间630。例如，存储程序代码的存储空间630可以包括分别用于实现上面的方法中的各种步骤的各个程序代码631。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘、紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为例如图7所示的便携式或者固定存储单元。该存储单元可以具有与图6的计算设备中的存储设备620类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括用于执行根据本申请的方法步骤的计算机可读代码631＇，即可以由诸如610之类的处理器读取的代码，当这些代码由计算设备运行时，导致该计算设备执行上面所描述的方法中的各个步骤。
应该注意的是上述实施例对本申请进行说明而不是对本申请进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本申请可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。

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  1. 一种抗照相机MIPI总线高次谐波干扰的方法，其特征在于，在移动终端中预存有所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内，所述方法包括：
    检测移动终端当前使用的射频通信频段；
    根据所述对应关系查找与移动终端当前使用的射频通信频段对应的照相机MIPI总线的安全频率；
    将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。
  2. 根据权利要求1所述的方法，其特征在于，确定所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系包括：
    针对所述移动终端可使用的任意一个射频通信频段，为所述照相机MIPI总线设置第一工作频率；
    根据所述第一工作频率确定所述照相机MIPI总线产生的高次谐波的频率；
    如果所述高次谐波的频率没有落在所述任意一个射频通信频段范围内，将所述第一工作频率作为与所述任意一个射频通信频段对应的安全频率。
  3. 根据权利要求2所述的方法，其特征在于，针对同一个射频通信频段，确定一个或至少两个安全频率。
  4. 根据权利要求2所述的方法，其特征在于，所述根据所述第一工作频率确定所述照相机MIPI总线产生的高次谐波的频率包括：
    计算所述照相机MIPI总线的工作频率的1/4分频频率或1/12分频频率；以及
    计算所述分频频率的倍频频率并作为所述照相机MIPI总线产生的高次谐波的频率。
  5. 根据权利要求1所述的方法，其特征在于，所述检测移动终端当前使用的射频通信频段包括：
    识别移动终端当前使用的网络类型；以及
    根据所述网络类型确定所述移动终端当前使用的射频通信频段。
  6. 根据权利要求5所述的方法，其特征在于，所述的网络类型包括：GSM850，GSM900，WI-FI2.4G，GPS，3G，4G。
  7. 一种抗照相机MIPI总线高次谐波干扰的装置，其特征在于，包括：
    检测单元，用于检测移动终端当前使用的射频通信频段；
    查询单元，用于根据所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，查找与移动终端当前的射频通信频段对应的照相机MIPI总线的安全频率，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内；
    设置单元，用于将照相机MIPI总线的当前工作频率设置为查找到的所述照相机MIPI总线的安全频率。
  8. 根据权利要求7所述的装置，其特征在于，所述检测单元包括：
    识别模块，用于识别移动终端当前使用的网络类型；
    确定模块，用于根据所述网络类型确定所述射频通信频段。
  9. 根据权利要求8所述的装置，其特征在于，所述的网络类型包括：GSM850，GSM900，WI-FI2.4G，GPS，3G，4G。
  10. 一种移动终端，其特征在于，包括：存储器和处理器，其中，
    所述存储器，用于存储所述移动终端可使用的射频通信频段与照相机MIPI总线的安全频率之间的对应关系，其中，所述照相机MIPI总线以所述安全频率工作时所产生的高次谐波不会落在对应的所述射频通信频段范围内；
    所述处理器，用于检测移动终端当前使用的射频通信频段，根据所述存储器存储的所述对应关系查找与所述移动终端当前使用的射频通信频段对 应的照相机MIPI总线的安全频率，将照相机MIPI总线的当前工作频率调整为查找到的所述照相机MIPI总线的安全频率。
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