CN116744423A

CN116744423A - Method and device for adjusting antenna power

Info

Publication number: CN116744423A
Application number: CN202211266526.5A
Authority: CN
Inventors: 吕建明; 余烽
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-09-12
Anticipated expiration: 2042-10-17
Also published as: CN116744423B

Abstract

The application provides a method and a device for adjusting antenna power, which are characterized in that an ISP (Internet service provider) drives to monitor whether the interface state of bottom layer transmission image data is abnormal, if so, the information of the interface state abnormality is transmitted to an antenna power adjustment service of an application program layer, so that the antenna power adjustment service of an upper layer can sense the phenomenon that a camera is interfered, the transmitting power of an antenna is further adjusted, and finally, the antenna power is reduced only under the condition that the camera is interfered, but not the antenna transmitting power is reduced when the camera is started. Therefore, the interference to the camera is reduced as much as possible on the premise of not affecting the normal supporting communication function of the antenna.

Description

Method and device for adjusting antenna power

Technical Field

The present application relates to the field of antenna technologies, and in particular, to a method and an apparatus for adjusting antenna power.

Background

Cameras are an important component of electronic devices through which images or videos are taken. However, when the camera works, the camera may be interfered by the antenna transmitting power in the electronic device, so that the phenomenon of stripes or screen patterns and the like appear on the preview interface of the camera application.

Disclosure of Invention

In view of the above, the present application provides a method and a method for adjusting antenna power to solve at least part of the above problems, and the disclosed technical solution is as follows:

in a first aspect, the present application provides a method for adjusting antenna power, applied to an electronic device, where the electronic device includes a camera and an antenna, the electronic device includes an operating system, and the operating system includes an ISP driving, a monitoring service, and an antenna power adjustment service, the method includes: responding to the starting of the camera, and collecting image data by the camera; the camera drives and transmits image data to the ISP based on the first interface; after the ISP driver detects the state abnormality of the first interface based on the image data, the ISP driver transmits the state abnormality information of the first interface to the monitoring service; the monitoring service transmits first interface state abnormality information to the antenna power adjustment service; the antenna power adjustment service responds to the receiving of the first interface state abnormal information, and obtains power adjustment matching information matched with the started camera, wherein the power adjustment matching information comprises antenna information and power reduction amplitude; the antenna power adjustment service triggers an antenna reduction in power matching the antenna information, the reduction in power including reducing transmit power based on a power reduction magnitude. In this way, it is achieved that the antenna power is reduced only in case the camera is disturbed, instead of reducing the antenna transmit power when the camera is started. Therefore, the interference to the camera is reduced as much as possible on the premise of not affecting the normal supporting communication function of the antenna.

In one possible implementation manner of the first aspect, the ISP driver detects the first interface state abnormality based on the image data, including: ISP drive analyzes received image data, wherein the image data comprises original image data and a first check code; ISP driving to obtain a second check code based on the original image data; if the second check code is different from the first check code, ISP driving determines that the interface state of the image data is abnormal. It can be seen that the ISP driver can determine whether the interface state transmitting the image data is abnormal directly by analyzing the received image data.

In another possible implementation manner of the first aspect, the first interface is an MIPI-based interface; the camera drives transmission image data to the ISP based on the first interface, comprising: the camera obtains a first cyclic redundancy check code according to the original image data based on an MIPI interface protocol; and combining the first cyclic redundancy check code and the original image data to obtain the image data, and transmitting the image data through the MIPI interface.

In a further possible implementation manner of the first aspect, the electronic device includes a front-facing camera; the antenna power adjustment service, in response to receiving the first interface state anomaly information, obtains power adjustment matching information matched with the started camera, including: the antenna power adjustment service determines that the started camera is a front-end camera, responds to the receiving of the first interface state abnormal information, and obtains first power adjustment matching information matched with the front-end camera from prestored power adjustment matching information based on the identification information of the front-end camera, wherein the first power adjustment matching information comprises the identification information of the radio frequency antenna and a first preset value. Therefore, when the current camera is a front camera, the scheme determines that the antenna needing to reduce power is a radio frequency antenna according to the acquired power adjustment matching information, and further triggers the power reduction power value of the radio frequency antenna.

In a further possible implementation manner of the first aspect, the operating system of the electronic device further comprises a telephone service, and the electronic device further comprises a modem; the antenna power adjustment service triggers the antenna matched with the antenna information to reduce power, comprising: the antenna power adjustment service generates a radio frequency antenna power reduction instruction based on the identification information of the radio frequency antenna and a first preset value; the antenna power adjustment service transmits a radio frequency antenna power reduction instruction to the telephone service; the modem executes the radio frequency antenna power reduction instruction to control the transmitting power of the radio frequency antenna to reduce by a first preset value.

In another possible implementation manner of the first aspect, the electronic device includes a rear camera; the antenna power adjustment service, in response to receiving the first interface state anomaly information, obtains power adjustment matching information matched with the started camera, including: the antenna power adjustment service determines that the started camera is a rear camera, responds to the receiving of the first interface state abnormal information, and obtains second power adjustment matching information matched with the rear camera from pre-stored power adjustment matching information based on the identification information of the rear camera, wherein the second power adjustment matching information comprises the identification information of the wireless communication antenna and a second preset value.

In a further possible implementation manner of the first aspect, the operating system of the electronic device further includes a wireless communication manager and a wireless communication module; the antenna power adjustment service triggers the antenna matched with the antenna information to reduce power, comprising: the antenna power adjustment service generates a wireless communication antenna power reduction instruction based on the identification information of the wireless communication antenna and a second preset value; the antenna power adjustment service transmits a wireless communication antenna power reduction instruction to the wireless communication manager; the wireless communication module executes a wireless communication antenna power reduction instruction to control the transmission power of the wireless communication antenna to be reduced by a second preset value.

In a further possible implementation manner of the first aspect, the operating system includes an application layer and a hardware abstraction layer; the hardware abstraction layer comprises a monitoring service, a camera android interface definition language AIDL service and a camera AIDL interface; the application program layer comprises an antenna power adjustment service; the monitoring service transmitting first interface state anomaly information to the antenna power adjustment service comprises: the monitoring service transmits first interface state abnormality information to the camera AIDL service; the camera AIDL service communicates first interface state anomaly information to the antenna power adjustment service via the camera AIDL interface. From the above, the monitoring service transmits the abnormal state information of the first interface to the antenna power adjustment service through the AIDL service and the camera AIDL interface, so that the antenna power adjustment service can sense the abnormal state of the first interface, and the antenna power is reduced only when the camera is monitored to be interfered.

In yet another possible implementation manner of the first aspect, the operating system includes a kernel layer, where the kernel layer includes an ISP driver, a camera device driver, and a camera device file node; an ISP driven process for communicating first interface state anomaly information to a monitoring service, comprising: ISP driver transmits first interface state abnormal information to camera equipment driver; the camera equipment driver writes first interface state abnormal information into a camera equipment file node; the camera equipment file node sends first interface state abnormality information to the monitoring service.

In a second aspect, the present application also provides an electronic device, including: one or more processors, memory, and a touch screen; the memory is used for storing program codes; the processor is configured to execute program code to cause the electronic device to implement a method of adjusting antenna power as any one of the possible implementations of the first aspect.

In a third aspect, the application also provides a computer readable storage medium having instructions stored thereon which, when run on an electronic device, cause the electronic device to perform a method of adjusting antenna power as in any of the possible aspects of the first aspect.

In a fourth aspect, the application also provides a computer program product having stored thereon an execution, which when run on an electronic device causes the electronic device to implement a method of adjusting antenna power as in any of the possible aspects of the first aspect.

It should be appreciated that the description of technical features, aspects, benefits or similar language in the present application does not imply that all of the features and advantages may be realized with any single embodiment. Conversely, it should be understood that the description of features or advantages is intended to include, in at least one embodiment, the particular features, aspects, or advantages. Therefore, the description of technical features, technical solutions or advantageous effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and advantageous effects described in the present embodiment may also be combined in any appropriate manner. Those of skill in the art will appreciate that an embodiment may be implemented without one or more particular features, aspects, or benefits of a particular embodiment. In other embodiments, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a screen display phenomenon of a preview interface according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic diagram of a software architecture of an electronic device according to an embodiment of the present application;

fig. 4 is a schematic diagram of a software architecture of another electronic device according to an embodiment of the present application;

fig. 5 is a flowchart of a method for adjusting antenna power according to an embodiment of the present application.

Detailed Description

The terms first, second, third and the like in the description and in the claims and in the drawings are used for distinguishing between different objects and not for limiting the specified order.

In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The distance between an antenna (such as a radio frequency antenna, a wireless communication antenna and the like) in the electronic equipment and the camera is relatively short, and in the process of using the camera, electromagnetic waves generated when the antenna emits power can interfere signals of the camera, so that a screen display phenomenon appears on a preview interface of camera application, and the screen display phenomenon refers to the phenomenon that images displayed on the preview interface of camera application appear in stripes, snowflakes and the like. Taking a preview interface of a camera application in a mobile phone as an illustration of a screen-splash phenomenon, fig. 1 (1) is a schematic diagram of a normal display shooting picture of the camera preview interface, fig. 1 (2) is a schematic diagram of a stripe-shaped image deletion of the preview interface, and fig. 1 (3) is a schematic diagram of a snowflake-shaped image deletion of the preview interface.

In fig. 1, only the camera application is taken as an example to illustrate the screen display phenomenon that the camera is disturbed, and the screen display phenomenon of the preview interface may also occur when other application programs call the scene shot by the camera to be disturbed. For example, in a scenario where a user performs a video call with another person, the electronic device needs to be connected to a wireless network (such as a mobile communication network, or a wireless communication network such as a WiFi network), that is, the antenna needs to transmit and receive a power signal, and meanwhile, the camera is also in a working state, so that a screen display phenomenon is likely to occur on a video call interface.

In order to prevent the antenna transmitting power from interfering the signal of the camera, the electronic equipment detects the starting of the camera, and then the transmitting power of the antenna is reduced. However, the degree to which the cameras of different electronic devices are interfered by the antennas may be different, for different electronic devices with the same antenna transmitting power, for example, device a and device B, the transmitting power of the two devices is the same, but the camera of device a is not interfered or is interfered to a lesser degree, so that normal use is not affected, the camera of device B is interfered to a heavier degree, and the screen display phenomenon occurs on the preview interface. Therefore, if the transmitting power is reduced uniformly for all the electronic devices, the communication performance of the electronic devices with lighter interference is affected, resulting in poor communication experience of the user, for example, problems such as jamming of the video call. Therefore, how to reduce the influence of reducing the antenna power on the communication capability of the electronic device while ensuring the normal operation of the camera becomes a problem to be solved.

In order to solve the technical problems, embodiments of the present application provide a method and an apparatus for adjusting antenna power, where when a camera is detected to be started and when the camera is detected to be interfered by an antenna, the antenna power is reduced; if the camera is not detected to be interfered by the antenna after being started, the antenna power is not reduced. In the embodiment of the application, during the working period of the camera, the state of a mobile industry processor interface (Mobile Industry Processor Interface, MIPI) at the bottom layer, namely the Camera MIPI state, is monitored in real time, if the camera MIPI state is abnormal, the camera is indicated to be interfered by an antenna, and the power of the antenna is triggered to be reduced at the moment, so that the interference to the camera is reduced as much as possible on the premise of not affecting the normal supporting communication function of the antenna.

In some embodiments, the electronic device to which the method for adjusting antenna power provided by the embodiments of the present application is applied may be a mobile phone, a tablet computer, a desktop, a laptop, a wearable electronic device, a smart watch, and other devices, which have a realistic screen, a camera, and an antenna at the same time.

Fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

As shown in fig. 2, the electronic device may include a processor 110, a camera 120, a display 130, a memory 140, a mobile communication module 150, a wireless communication module 160, an audio module 170, the audio module 170 including a speaker 171, a receiver 172, and a microphone 173.

It is to be understood that the configuration illustrated in this embodiment does not constitute a specific limitation on the electronic apparatus. In other embodiments, the electronic device may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, for example, processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a digital signal processor (digital signal processor, DSP), a baseband processor, etc., where the different processing units may be separate devices or integrated in one or more processors, for example, the modem processor and the baseband processor may be integrated in one processor. Wherein the ISP is used to process the data fed back by the camera 120.

The processor may include one or more interfaces. The interfaces may include mobile industry processor interfaces (mobile industry processor interface, MIPI), integrated circuit (inter-integrated circuit, I2C) interfaces, integrated circuit built-in audio (inter-integrated circuit sound, I2S) interfaces, pulse code modulation (pulse code modulation, PCM) interfaces, universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interfaces, and the like.

The MIPI interface may be used to connect the processor 110 to peripheral devices such as the display 130, the camera 120, and the like. The MIPI interfaces include camera serial interfaces (camera serial interface, CSI), display serial interfaces (display serial interface, DSI), and the like. In some embodiments, the processor 110 and the camera 120 communicate through a CSI interface to implement a photographing function of the electronic device. The processor 110 and the display screen 130 communicate through a DSI interface to implement the display function of the electronic device.

It should be understood that the connection relationship between the modules illustrated in this embodiment is only illustrative, and does not limit the structure of the electronic device. In other embodiments of the present application, the electronic device may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.

The camera 120 is used to capture still images or video. In some embodiments, the electronic device may include 1 or N cameras 120, N being a positive integer greater than 1.

The display screen 130 is used to display images, videos, and the like. In some embodiments, the electronic device may include 1 or N display screens 130, N being a positive integer greater than 1.

Memory 140 may be used to store computer executable program code that includes instructions. The processor 110 executes various functional applications of the electronic device and data processing by executing instructions stored in the memory 140. For example, in the present embodiment, the processor 110 may adjust the antenna power by executing instructions stored in the memory 140.

The wireless communication function of the electronic device may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

In some embodiments, antenna 1 is coupled to mobile communication module 150 and antenna 2 is coupled to wireless communication module 160 so that the electronic device can communicate with the network and other devices through wireless communication techniques.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G, etc. applied on an electronic device.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc. for application on an electronic device. The wireless communication module may be one or more devices that integrate at least one communication processing module.

The electronic device may implement audio functions through an audio module 170, a speaker 171, a receiver 172, a microphone 173, an application processor, and the like. Such as music playing, recording, etc.

In addition, on the above components, an operating system is run, e.gAn operating system. An operating application may be installed on the operating system.

The operating system of the electronic device may employ a layered architecture, an event driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture. In the embodiment of the application, an Android system with a layered architecture is taken as an example, and the software structure of the electronic equipment is illustrated. In some embodiments, the operating system of the electronic device is typically run in an application processor.

Fig. 3 is a software structural block diagram of an electronic device according to an embodiment of the present application.

The layered architecture divides the software into several layers, each with distinct roles and branches. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, from top to bottom, an application layer, an application framework layer, an Zhuoyun row (Android run) and system libraries, and a kernel layer, respectively.

The application layer may include a series of application packages, for example, the application packages may include applications for cameras, gallery, calendar, conversation, map, navigation, WLAN, bluetooth, music, video, short messages, etc. In the embodiment of the present application, the application package may further include a Sar Service (i.e., sar Service, i.e., the antenna power adjustment Service described in the claims) and a configuration file.

In some embodiments, the camera transmits image data to an upper layer through the MIPI interface, and the Sar service is configured to receive a status of listening to the MIPI interface, and after detecting that the MIPI status is abnormal, start a procedure for reducing the transmit power of the antenna. Herein, sar is an abbreviation of specific absorption rate, and chinese paraphrased as electromagnetic wave absorption ratio or specific absorption rate.

The configuration file is used to store a matching factor for reducing the antenna power (i.e., the power adjustment matching information described in the claims), for example, the matching factor may be that a front camera is currently used to start a process for reducing the transmission power of the radio frequency antenna, and a rear camera is currently used to start a process for reducing the transmission power of the WiFi antenna. In addition, the matching factor may further include a power reduction value, which may be obtained through experiments.

For example, in an exemplary embodiment, the matching factor includes identification information of the camera, identification information of the antenna to be power adjusted, and a power reduction value. The identification information of the Camera may be the name of the Camera, for example, the name of the front Camera is Camera1, and the names of the rear cameras are Camera2 to Camera4. The identification information of the antenna to be power-adjusted may be the name of the antenna, for example, the antenna name is a radio frequency antenna, a WiFi antenna, etc.

In the mobile phone structure, the distance between the radio frequency antenna and the front camera is usually short, and the distance between the WiFi antenna and the rear camera is short, so that the probability of being interfered by the radio frequency antenna during the working period of the front camera is high, and the probability of being interfered by the WiFi antenna during the working period of the rear camera is high. Based on the above, when the front camera is interfered, the power of the radio frequency antenna can be reduced, and when the rear camera is interfered, the matching factor of the power of the WiFi antenna can be reduced.

Of course, in other embodiments of the present application, according to the actual position of the antenna in the electronic device and the mapping information between the cameras with interference of the antenna, the present application does not limit the configuration information in the configuration file.

An application Framework layer (Framework) provides an application programming interface (application programming interface, API) and programming Framework for the application of the application layer. The application framework layer includes a number of predefined functions. For example, embodiments of the present application relate to telephony services, wireless interface layers, wiFi services, and WiFi managers for an application framework layer.

Among other things, telephony services (i.e., telephony services) provide support for Telephony Application Programming Interfaces (TAPIs).

The radio interface layer (radio Iinterface layer, RIL) is a management layer to which the AP is connected to a Modem processor (Modem).

The WiFi service (WiFi service) is a core service responsible for WiFi functions in an Android application framework layer, and mainly manages and controls the WiFi functions in an Android platform by means of wpa_suppuration (WPAS for short).

The WiFi Manager (WiFi Manager) is a system tool class software running in the Android platform, mainly used to manage WiFi.

The hardware abstraction layer (hardware abstraction layer, HAL) is an important bridge connecting the Framework and Linux kernel device drivers. The HAL layer can shield the difference of different hardware devices and provide a uniform device access interface for Android. Different hardware manufacturers follow the HAL standard to realize hardware control logic, and developers do not need to care about the difference of hardware devices, and only need to access the hardware according to the standard interface provided by the HAL.

In some embodiments, taking a high-pass (Qcom) chip platform as an example, the HAL layer of embodiments of the present application may include a camera AIDL interface (hncamera aidlinterface), a camera AIDL service (hncamera aidlservice), a HAL monitoring service (CamCfgServer), and a CHI. Wherein, AIDL is Android interface definition language.

The CHI is a part of a high-pass platform Camx-CHI architecture, wherein the Camx-CHI architecture extracts some highly uniform functional interfaces and places the highly uniform functional interfaces into CamX, and customizable parts are placed in the CHI for different manufacturers to modify, so that unique characteristic functions of the Camx-CHI architecture are realized. In this embodiment, the CHI mainly completes the platform adaptation, and is the initiator of the HAL monitoring service and the camera AIDL service.

The HAL monitoring service (CamCfgServer) is used for receiving the MIPI state exception reported by the bottom layer in the embodiment of the application, and feeding back to the camera AIDL service in a callback mode. Further, the camera AIDL service feeds MIPI status exception information back to the Sar service of the application layer via the camera AIDL interface.

In some embodiments of the present application, the MIPI status may be determined by a CRC check code of image data transmitted over the MIPI interface. The MIPI protocol has a data check mechanism and cyclic redundancy check (cyclic redundancy check, CRC) anomalies indicate anomalies in the image data transmission process.

Android run time includes a core library and virtual machines. Android run time is responsible for scheduling and management of the Android system. The system library may include a plurality of functional modules.

The kernel layer is a layer between hardware and software. In the embodiment of the application, the kernel layer at least comprises an ISP driving module and a camera equipment driving module of the high-pass platform and also comprises a camera equipment file.

The ISP driving module is used for driving the ISP. The camera device driving module is used for driving the camera device.

Under Linux, all peripherals are regarded as a special file, called a "device file", which can be read and written as if it were accessing a normal file. In the embodiment of the application, the camera equipment file is a file driven by a V4L2 (Video for Linux Two) video communication protocol. V4L2 provides a set of socket specifications for video equipment programs under Linux. For example, in the embodiment of the present application, the camera device file driven by V4L2 is dev/vedio251.

Besides the software framework, the electronic equipment further comprises hardware, the hardware comprises a camera, and image signals collected by the camera are transmitted to an ISP Driver of a high-pass platform of the kernel layer through an MIPI interface.

And the ISP Driver checks the received image data, determines that the MIPI state is abnormal if the check fails, and transmits the information of the MIPI state abnormality to the Sar service formed by the application program layer by layer. The flow of reducing the antenna power is further triggered by the Sar service.

In one scenario, antenna 1 connected to mobile communication module 150 is currently being used, the sar service issues a power down command to the telephony service of the application framework layer, and the command is issued over the radio interface layer to a modem in the baseband processor, which executes the command to reduce the power of antenna 1.

In another scenario, antenna 2 connected to wireless communication module 160 is currently being used, the sar service issues a WiFi power reduction instruction to the WiFi service of the application framework layer, the WiFi service issues the instruction to the WiFi manager, the WiFi manager transmits the instruction to the WiFi module in the baseband processor, and the WiFi module executes the instruction to reduce the power of antenna 2.

Fig. 4 is a software architecture block diagram of another electronic device according to an embodiment of the present application, which is applied to an electronic device having both a high-pass platform and a concurrency platform. The difference between the software structure shown in fig. 4 and fig. 3 is that the hardware abstraction layer in the software architecture shown in fig. 4 includes both the CamHAL of the high-pass platform and the CamHAL of the concurrency platform.

As shown in fig. 4, the CamHAL of the high-pass platform and the CamHAL of the concurrency platform share the following modules: camera AIDL interface, camera AIDL service and HAL monitoring service. The Pipeline in the concurrency platform CamHAL has the function similar to the CHI in the high-pass platform CamHAL, mainly completes the adaptation of the concurrency platform and is an initiator of the HAL monitoring service and the camera AIDL service. Other parts are the same as the software architecture shown in fig. 3, and will not be described here again.

In the following, a process of adjusting antenna power is described by taking an electronic device as a mobile phone, and the process is also applicable to other electronic devices, which will not be described in detail.

Fig. 5 is a flowchart of a method for adjusting antenna power according to an embodiment of the present application, where the method for adjusting antenna power according to the present embodiment may include three stages, i.e., (1) powering on a mobile phone, (2) starting up a camera, and (3) turning off the camera. The mobile phone starting process is an optional process, and the mobile phone starting process is only required to be executed once when the mobile phone is started, and the mobile phone is started again after the mobile phone is powered off.

As shown in fig. 5, the method may include the steps of:

s101, starting the mobile phone, starting a camera HAL process, and acquiring camera capability.

During the starting-up process of the mobile phone, an intelligent operating system in the mobile phone is started, and the process starts a camera HAL process, so that camera capability, such as static capability supported by a camera, such as resolution, frame rate, aperture, focal length and the like, is obtained from CHI of the HAL layer.

S102, the CHI initializes the camera AIDL service (i.e., hnCameraAidlService).

For example, the CHI invokes an AIDL service initialization interface to complete AIDL service initiation.

S103, the Sar Service acquires the AIDL Service of the camera.

The Sar Service acquires information of the camera AIDL Service, such as a communication interface, so that the Sar Service is ensured to communicate with the camera AIDL Service, and thus the Sar Service receives the MIPI status anomaly information transmitted by the camera AIDL Service.

S104, the camera AIDL service registers callback with the HAL monitoring service.

After a caller invokes a function, the execution result or state needs to be transferred to the caller again during or after the execution of the function, and a series of subsequent operations, namely a callback mechanism, are performed.

In this embodiment, after the camera AIDL service registers callback to the HAL monitoring service, when the HAL monitoring service monitors that the underlying MIPI status is abnormal, the monitoring result of the MIPI status abnormality is fed back to the camera AIDL service in a callback manner.

S105, the Sar Service registers callback of the camera AIDL Service.

After the Sar Service registers the callback of the camera AIDL Service, after the camera AIDL Service obtains the MIPI state abnormality result fed back by the HAL monitoring Service, the callback mode can be used for feeding back the MIPI state abnormality result to the Sar Service.

The processes shown in S101 to S105 are the mobile phone startup process.

S106, starting the camera.

For example, a user launching a camera application in a cell phone will launch a video camera. For another example, the user may invoke the camera by starting other applications in the mobile phone, such as invoking the camera after starting a video call function of the video call application.

S107, the CHI initializes the HAL monitoring service.

In the process of starting the camera, the CHI calls an initialization function of the HAL monitoring service to complete the initialization process of the HAL monitoring service.

The process of initializing the HAL monitoring service is mainly to create the HAL monitoring service, and the processes shown in the following S108 to S112 are the initialization process of the HAL monitoring service.

S108, the HAL monitoring service starts a file node of the camera equipment.

In the Linux system, all peripherals are regarded as a special file, called a "device file", which can be read and written as if it were accessing a normal file. In the embodiment of the application, the camera equipment file is a file driven by a V4L2 (Video for Linux Two) video communication protocol. V4L2 provides a set of socket specifications for video equipment programs under Linux.

In the embodiment of the application, the file node of the camera equipment can be called as a V4L2 node.

S109, the camera equipment file node subscribes to a camera equipment driver (CamCfgDevDriver).

Message subscription and publishing are methods for inter-component communication, and in this embodiment, a file node of camera equipment subscribes to an MIPI status exception message in CamCfgdevDriver. The message subscriber is the camera device file node, i.e., the component that receives the data. The message publisher is the CamCfgdevDriver, the component that provides the data.

S110, the camera equipment driver completes message subscription of the camera equipment file node and returns a successful subscription result to the camera equipment file node.

S111, the camera equipment file node returns a starting result to the HAL monitoring service.

And S112, after the HAL monitoring service receives the starting result returned by the HAL monitoring service, starting a message monitoring thread, and returning the starting result of the HAL monitoring service to the CHI.

The process shown in S107 to S112 described above is a process of starting the HAL monitoring service, which is performed only once during the operation of the camera.

S113, the ISP driver receives the image data transmitted by the camera equipment through the MIPI interface, checks the image data, and determines that the MIPI state is abnormal if the check fails.

For example, in an embodiment of the present application, the ISP driver receives image data transmitted by the camera device through the MIPI interface.

Based on MIPI protocol, CRC check code is generated in the image data transmission process and is sent to the receiving end along with the image data. The receiving end receives the image data, analyzes the image data to obtain a CRC check code (called a first CRC check code), and generates a new CRC check code (called a second CRC check code) according to the image data. If the second CRC check code is the same as the first CRC check code, the image data received by the receiving end is accurate. If the second CRC check code is different from the first CRC check code, it indicates that the image data received by the receiving end is erroneous, for example, the data of some bit or bits in the image data changes, for example, from 0 to 1 or from 1 to 0, caused by interference of the antenna signal during transmission via the MIPI interface. Therefore, after the CRC check code fails to check, the MIPI state is abnormal, and further the condition that the camera is interfered by an antenna in the working process is indicated.

The act of determining whether the CRC check code is consistent is performed by the ISP Driver, and therefore, it is necessary to transfer the information of the CRC check code abnormality layer by layer to the Sar service of the application layer.

S114, the ISP driver sends MIPI state exception events to the camera device driver.

The ISP driver triggers an interrupt after the received image data fails to verify, and the ISP driver responds to the interrupt to send an MIPI state exception event to the camera device driver.

S115, the camera device driver transfers MIPI status exception information to the camera device file node.

After receiving the MIPI state anomaly message, the camera device driver sends MIPI state anomaly information to the subscriber based on the recorded subscriber subscribing to the message.

S116, the camera equipment file node transmits MIPI state abnormality information to the HAL monitoring service.

S117, the HAL monitoring service delivers MIPI status exception information to the camera AIDL service.

In the initialization process of the camera AIDL service, the camera AIDL service registers callback to the HAL monitoring service, so that after the HAL monitoring service receives MIPI state abnormality information, the MIPI state abnormality information is fed back to the camera AIDL service in a callback mode.

S118, the camera AIDL Service transmits MIPI state anomaly information to Sar Service.

In the process of starting up and initializing the mobile phone, the Sar Service registers a callback of the camera AIDL Service, so that the camera AIDL Service feeds back the MIPI state abnormality information to the Sar Service in a callback mode after receiving the MIPI state abnormality information.

S119, after the Sar Service receives the MIPI state anomaly information, a matching factor matched with the currently used camera is obtained. If the front camera is currently used, executing S120; if the rear camera is currently used, S123 is executed.

And after receiving the MIPI state abnormality information, the Sar Service acquires a matching factor from the configuration file of the application program layer, and matches the currently used camera with the matching factor.

For example, a front-end camera is currently used, and a matching factor containing identification information of the front-end camera is a matching factor for successful matching, where the matching factor includes reducing the transmission power of the radio frequency antenna.

For another example, a rear camera is currently used, and a matching factor containing identification information of the rear camera is a matching factor successfully matched, and the matching factor includes reducing the transmission power of the WiFi antenna.

In addition, the matching factor may further include an antenna power reduction value, and the power reduction value of a signal that does not affect the communication performance of the mobile phone and interferes with the camera may be obtained through a test, for example, at least one power reduction value may be obtained for each model.

S120, the Sar Service generates an instruction for reducing the power of the radio frequency antenna based on a matching factor matched with the front-end camera, and sends the instruction to the telephone Service of the application framework layer.

For example, in an exemplary embodiment, sar Service determines that the antenna to be powered down is a radio frequency antenna based on the identification information of the radio frequency antenna in the matching factor, and generates a radio frequency antenna power command based on the power reduction value in the matching factor and communicates the command to the telephony Service.

S121, the telephone service issues an instruction for reducing the power of the radio frequency antenna to the modem through a Radio Interface Layer (RIL).

S122, the modem executes the instruction for reducing the power of the radio frequency antenna, and reduces the power of the radio frequency antenna.

In one possible implementation, a reduction value of the antenna power may be written in the configuration file, which may be, for example, 4dB, 5dB, 6dB, etc. For example, the antenna power reduction value corresponding to each model may be determined by a test.

In another possible implementation, a fixed step-down amplitude step may be set, e.g., the step-down amplitude step is 2dB, and the antenna transmit power is reduced by 2dB after the MIPI anomaly is detected. Then continuing to monitor whether the MIPI state is abnormal, if so, continuing to reduce by 2dB until the MIPI state is recovered to be normal.

S123, the Sar Service generates a command for reducing the power of the WiFi antenna based on a matching factor matched with the rear camera, and issues the command to the WiFi manager.

The process of generating the instruction for reducing the power of the WiFi antenna is the same as the process of generating the instruction for reducing the power of the radio frequency antenna, and will not be described here again.

S124, the WiFi manager issues a WiFi antenna power reducing instruction to the WiFi module.

S125, the WiFi module executes the instruction for reducing the antenna power, and reduces the transmitting power of the WiFi antenna.

The process of reducing the transmission power of the WiFi antenna is the same as the process of reducing the transmission power of the radio frequency antenna, and will not be described here again.

The processes shown in S113 to S125 described above may be repeatedly performed during the operation of the camera.

S126, the user closes the camera.

S127, in response to the operation of closing the camera, the CHI logs out the HAL monitoring service.

After the user closes the camera, the user needs to log out the HAL monitoring service, so as to release system resources (such as memory space, thread resources and the like) occupied by the HAL monitoring service, and improve the running performance of the electronic equipment.

S128, the HAL monitoring service stops the message monitoring thread.

S129, the HAL monitoring service closes the file node of the camera equipment.

And S130, the HAL monitoring service returns a cancellation result to the CHI.

According to the method for adjusting the antenna power, whether the camera is interfered by the antenna is monitored through the MIPI interface state of the ISP drive monitoring bottom layer transmission image data, and if the MIPI interface state is abnormal, the camera is indicated to be interfered by the antenna; if the MIPI state is normal, the camera is indicated to work normally. Further, ISP drivers are required to pass MIPI state anomaly information up layer-by-layer to the Sar Service of the application layer. Therefore, the Sar Service can sense the phenomenon that the camera is interfered by the antenna, and further reduce the transmitting power of the antenna in time, so that the interference to the camera is reduced as much as possible on the premise that the normal supporting communication function of the antenna is not affected. As can be seen from the above description, the scheme starts the process of reducing the antenna power only after the camera is monitored to be interfered, in other words, reduces the antenna power only in the abnormal scene of the monitored camera, so as to avoid the phenomenon that the camera is not interfered or the electronic equipment with lighter interference reduces the antenna power, and the user communication experience of the electronic equipment is degraded, thereby ensuring the communication performance of the electronic equipment.

The above description uses a processor chip as a high-pass processor chip as an example, and the above process is also applicable to electronic devices in which the processor chip is other chips, such as a co-processor chip, which is not described in detail herein.

In addition, the method for adjusting the antenna power provided by the embodiment of the application monitors whether the interface state of the bottom layer transmission image data is abnormal or not by the ISP drive, if the interface state is abnormal, the information of the interface state abnormality is transmitted to the antenna power adjustment service of the application program layer, so that the antenna power adjustment service of the upper layer can sense the phenomenon that the camera is interfered, the transmitting power of the antenna is further adjusted, and finally, the antenna power is reduced only under the condition that the camera is interfered, but not the antenna transmitting power is reduced when the camera is started. In this embodiment, the Android system is taken as an example for explanation, however, the above process may be applied to other operating systems, and when the scheme is applied to other operating systems, a person skilled in the art only needs to adaptively modify the Android system according to the difference between the other operating systems and the Android system, so that creative labor is not required.

From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.

In the several embodiments provided in this embodiment, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present embodiment may be integrated in one processing unit, each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present embodiment may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the method described in the respective embodiments. And the aforementioned storage medium includes: flash memory, removable hard disk, read-only memory, random access memory, magnetic or optical disk, and the like.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of adjusting antenna power, characterized by being applied to an electronic device, the electronic device comprising a camera and an antenna, the electronic device comprising an operating system, the operating system comprising an image signal processor ISP drive, a monitoring service and an antenna power adjustment service, the method comprising:

responding to the starting of a camera, and acquiring image data by the camera;

the camera drives and transmits the image data to the ISP based on a first interface;

the ISP driver transmits first interface state abnormality information to the monitoring service after detecting the state abnormality of the first interface based on the image data;

the monitoring service transmits the first interface state abnormality information to the antenna power adjustment service;

the antenna power adjustment service responds to the receiving of the first interface state abnormality information and obtains power adjustment matching information matched with the started camera, wherein the power adjustment matching information comprises antenna information and power reduction amplitude;

the antenna power adjustment service triggers an antenna power reduction that matches the antenna information, the power reduction including reducing transmit power based on the power reduction magnitude.

2. The method of claim 1, wherein the ISP driver detecting the first interface state anomaly based on the image data comprises:

the ISP driver analyzes the received image data, wherein the image data comprises original image data and a first check code;

the ISP driver obtains a second check code based on the original image data;

if the second check code is different from the first check code, the ISP driver determines that the interface state of the image data is abnormal.

3. The method of claim 1 or 2, wherein the first interface is a mobile industry processor MIPI-based interface;

the camera is based on a first interface, and the camera drives and transmits the image data to the ISP, and the camera comprises:

the camera obtains a first cyclic redundancy check code according to original image data based on an MIPI interface protocol;

and combining the first cyclic redundancy check code and the original image data to obtain the image data, and transmitting the image data through the MIPI interface.

4. A method according to claim 2 or 3, wherein the electronic device comprises a front-facing camera;

the antenna power adjustment service, in response to receiving the first interface state anomaly information, obtains power adjustment matching information matched with the started camera, including:

The antenna power adjustment service determines that the started camera is the front-end camera, responds to receiving the first interface state abnormal information, and obtains first power adjustment matching information matched with the front-end camera from the pre-stored power adjustment matching information based on the identification information of the front-end camera, wherein the first power adjustment matching information comprises the identification information of the radio frequency antenna and a first preset value.

5. The method of claim 4, wherein the operating system of the electronic device further comprises a telephone service, the electronic device further comprising a modem;

the antenna power adjustment service triggers the antenna matched with the antenna information to reduce power, and the antenna power adjustment service comprises the following steps:

the antenna power adjustment service generates a radio frequency antenna power reduction instruction based on the identification information of the radio frequency antenna and the first preset value;

the antenna power adjustment service communicates the radio frequency antenna power reduction instruction to the telephony service;

and the modem executes the radio frequency antenna power reduction instruction to control the transmitting power of the radio frequency antenna to reduce the first preset value.

6. A method according to claim 2 or 3, wherein the electronic device comprises a rear camera;

the antenna power adjustment service determines that the started camera is the rear camera, responds to receiving the first interface state abnormal information, and obtains second power adjustment matching information matched with the rear camera from the pre-stored power adjustment matching information based on the identification information of the rear camera, wherein the second power adjustment matching information comprises the identification information of the wireless communication antenna and a second preset value.

7. The method of claim 6, wherein the operating system of the electronic device further comprises a wireless communication manager and a wireless communication module;

the antenna power adjustment service generates a wireless communication antenna power reduction instruction based on the identification information of the wireless communication antenna and the second preset value;

The antenna power adjustment service communicating the wireless communication antenna power reduction instruction to the wireless communication manager;

and the wireless communication module executes the wireless communication antenna power reduction instruction and controls the transmitting power of the wireless communication antenna to be reduced by the second preset value.

8. The method of any of claims 1-7, wherein the operating system includes an application layer and a hardware abstraction layer; the hardware abstraction layer comprises the monitoring service, a camera android interface definition language AIDL service and a camera AIDL interface; the application layer includes the antenna power adjustment service;

the monitoring service transmitting the first interface state anomaly information to the antenna power adjustment service, including:

the monitoring service transmits the first interface state abnormality information to the camera AIDL service;

the camera AIDL service communicates the first interface state anomaly information to the antenna power adjustment service via the camera AIDL interface.

9. The method of any of claims 1-8, wherein the operating system comprises a kernel layer, the kernel layer comprising the ISP driver, camera device driver, and camera device file node;

The ISP drives a process of delivering first interface state anomaly information to the monitoring service, comprising:

the ISP driver transmits the first interface state abnormality information to the camera equipment driver;

the camera equipment drives to write the first interface state abnormal information into the camera equipment file node;

and the camera equipment file node sends the first interface state abnormal information to the monitoring service.

10. An electronic device, the electronic device comprising: one or more processors, memory, and a touch screen; the memory is used for storing program codes; the processor is configured to execute the program code to cause the electronic device to implement the method of adjusting antenna power as claimed in any one of claims 1 to 9.

11. A computer readable storage medium having instructions stored thereon which, when executed on an electronic device, cause the electronic device to perform the method of adjusting antenna power of any of claims 1 to 9.