CN117729425A - Camera distribution method and electronic equipment - Google Patents

Abstract

The embodiment of the application provides a camera distribution method and electronic equipment, relates to the technical field of electronics, and is used for solving the problem that a close-range watching reminding function cannot be timely recovered after other functional modules are out of use of a camera. The method is applied to electronic equipment, wherein the electronic equipment comprises a camera, and a first functional module and a second functional module which support the use of the camera to realize corresponding functions; the first function corresponding to the first function module is in an on state, and the current camera is distributed to the second function module. The method comprises the following steps: acquiring a first operation aiming at a second functional module; in response to a first operation, releasing the camera from the second functional module and assigning the camera to the first functional module.

Description

A camera distribution method and electronic device

Technical field

Embodiments of the present application relate to the field of electronic technology, and in particular, to a camera distribution method and electronic equipment.

Background technique

When a user uses an electronic device, if the distance between the eyes and the display screen of the electronic device is too close, the user's vision may be easily damaged. Therefore, in order to protect the user's vision when the user uses the electronic device, the electronic device can monitor the distance between the user's eyes and the display screen of the electronic device when the user uses the electronic device, and detect that the distance between the user's eyes and the display screen is too close. Reminder when needed.

In the related technology, in order to realize the close viewing reminder function, a camera can be used to obtain the image in front of the display screen. The camera of an electronic device can usually only be used by one functional module at a time. On the premise that the close viewing reminder function is turned on, if there are other functional modules that need to use the camera, and the camera use priority of other functional modules is higher than that of the close viewing reminder module, the close viewing reminder function will be forced to interrupt. How to restore the close viewing reminder function has become an urgent technical issue that needs to be solved.

Contents of the invention

Embodiments of the present application provide a camera allocation method and electronic equipment to solve the problem that the close viewing reminder function cannot be restored in time after other functional modules quit using the camera.

In order to achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

In a first aspect, a camera allocation method is provided. The method is applied to an electronic device. The electronic device includes a camera, and a first functional module and a second functional module that support using the camera to implement corresponding functions; the first functional module corresponds to The first function is turned on, and the current camera is assigned to the second function module. The method includes:

In the case where the camera is assigned to the second functional module, if the second functional module needs to quit using the camera, the user can initiate the first operation for the second functional module. In response to the first operation, the electronic device releases the camera from the second functional module. Since the first function corresponding to the first functional module is in the on state, after releasing the camera, the electronic device will also allocate the camera to the first functional module. Therefore, the first functional module can use the camera to implement the first function. In this way, the first function module can promptly call the camera to implement the first function after the camera is released. At the same time, the first functional module does not need to continuously try to open the camera, which can avoid waste of CPU resources.

In a possible implementation of the first aspect, the electronic device further includes a camera function module. In response to the first operation, releasing the camera from the second function module and assigning the camera to the first function module may include: :

In response to the first operation, the camera function module releases the camera from the second function module and triggers sending a notification message that the camera is released to the first function module. After receiving the notification message, the first functional module can sense that the camera is released. After that, the first function module can call the camera. The first functional module sends a first camera calling instruction to the camera functional module based on the notification message. In response to the first camera calling instruction, the camera function module assigns the camera to the first function module. In this way, after other functional modules release the camera, the camera functional module can trigger sending a notification message to the first functional module to inform the first functional module that the camera is released, so that the first functional module can call the camera in time to start the second functional module. One function.

In a possible implementation of the first aspect, the use priority of the first functional module for the camera is lower than the use priority of the second functional module for the camera. In this way, when the first functional module is using the camera, if the second functional module requests to call the camera, the electronic device will allocate the right to use the camera to the second functional module. That is, the second functional module is allowed to seize the priority of using the camera from the first functional module. If the second functional module is using the camera, and the first functional module requests to call the camera, the electronic device will not allow the first functional module to seize the second functional module's right to use the camera.

In another possible implementation of the first aspect, before obtaining the first operation for the second functional module, the above method further includes: obtaining the second operation for the second functional module. In response to the second operation, the electronic device assigns the camera to the second functional module.

In another possible implementation of the first aspect, before obtaining the second operation for the second functional module, the above method further includes: obtaining the third operation for the first functional module. Since the third operation on the first functional module occurs before the first operation on the second functional module, it means that the camera is currently not assigned to other functional modules. Therefore, in response to the third operation, the electronic device activates the first function, and the camera can be assigned to the first functional module. That is to say, in this embodiment, before the second operation for the second functional module is acquired, the camera has been assigned to the first functional module. The above allocation of the camera to the second functional module in response to the second operation may specifically include: in response to the second operation, the electronic device needs to first release the camera from the first functional module. Only then can the camera be assigned to the second functional module.

In this solution, if the first function is turned on first, the camera will be assigned to the first function module. If the function corresponding to the second function module is turned on later, the second function module will seize the right to use the camera, causing the first function to be temporarily interrupted. At this time, the camera needs to be released from the first functional module and then assigned to the second functional module. Then, when the second functional module releases the camera, it notifies the first functional module that the camera is released, so that the first functional module can re-call the camera in time and restore the first function.

In another possible implementation of the first aspect, if the first function module calls the camera at the front and the second function module calls the camera at the back, then in response to the second operation, before assigning the camera to the second function module , the above method may further include: determining the priority of using the camera between the first functional module and the second functional module. In this embodiment, the electronic device may assign the camera to the second functional module in response to the second operation after determining that the second functional module has a higher priority for using the camera than the first functional module.

In another possible implementation of the first aspect, the electronic device further includes a camera function module. After obtaining the third operation for the first functional module, the above method may further include: the first functional module initiates a first registration request to register the camera release callback function. In response to the first registration request, the electronic device may add a registration record of the camera release callback function of the first functional module. In this way, when the camera release callback function is called, a notification message can be sent to the first functional module based on the registration record. Later, after the camera is released, the camera function module can trigger a call to the camera release callback function, and based on the registration record, after calling the camera release callback function, a notification message that the camera is released can be sent to the first function module.

In this solution, when the first function module starts the first function, the camera release callback function can be registered. In response to the registration request initiated by the first functional module to register the camera release callback function, the electronic device may add a registration record of the camera release callback function by the first functional module in the electronic device. Afterwards, if the right to use the camera of the first functional module is preempted by other functional modules (such as the second functional module), when the other functional module releases the camera, the electronic device can call the camera release callback function to send the camera to the first functional module. Released notification message. Therefore, the first functional module can sense that the camera is released in time, and re-call the camera in time to realize the first function.

In another possible implementation of the first aspect, the electronic device further includes a camera function module. The first function is started in the front, and the second function module calls the camera in the back. Since the camera is in an idle state when the first functional module is started, the electronic device can directly assign the camera to the first functional module, that is, the first functional module can obtain the right to use the camera. But later, if the second functional module calls the camera, the right to use the camera will be assigned to the second functional module, that is, the right to use the camera will be preempted by the second functional module. In this embodiment, the first functional module can register the camera release callback function when the right to use the camera is preempted. Specifically, after the camera is released from the first functional module in response to the second operation, the above method further includes: the first functional module initiating a second registration request to register the camera release callback function. In response to the second registration request, add a registration record of the camera release callback function of the first functional module. Similarly, after the camera is released, the camera function module can trigger the call of the camera release callback function, and based on the registration record, after calling the camera release callback function, a notification message that the camera is released can be sent to the first function module.

In this way, the first functional module registers the camera release callback function when the right to use the camera is preempted by other functional modules. It can also be implemented that when the second functional module quits using the camera, the camera function module triggers the call of the camera release callback function and sends the callback function to the third functional module. A functional module sends a notification message. Likewise, the first function module can sense that the camera is released in time, and promptly re-call the camera to restore the first function.

In another possible implementation of the first aspect, the electronic device further includes a camera function module. The first functional module may also request to call the camera after the camera is assigned to the second functional module. That is, after allocating the camera to the second functional module in response to the second operation, the above method further includes: obtaining a fourth operation for the first functional module. In response to the fourth operation, the electronic device activates the first function. Since the camera is currently occupied, the electronic device cannot assign the camera to the first functional module. Therefore, after starting the first function, the first function module can first register the camera release callback function, so that when other function modules release the camera, they can promptly sense the news that the camera has been released. That is, in response to the fourth operation, the first functional module will also initiate a third registration request for the camera release callback function. In response to the third registration request, the electronic device adds a registration record of the camera release callback function of the first functional module. Similarly, after the camera is released, the camera function module can trigger the call of the camera release callback function, and based on the registration record, after calling the camera release callback function, a notification message that the camera is released can be sent to the first function module. In this way, the first functional module can promptly sense the news that the camera is released after the camera is released by other functional modules, and call the camera in time to realize the first function.

In another possible implementation of the first aspect, in the case where the camera is assigned to the second functional module, after the electronic device obtains the fourth operation for the first functional module, in response to the fourth operation, the electronic device The first function is started, and the priority of using the camera between the first functional module and the second functional module is determined. When it is determined that the first functional module has a lower priority for using the camera than the second functional module, the electronic device will not immediately allocate the camera to the first functional module in response to the fourth operation, but the first functional module will register first. Camera release callback function. Later, after the second functional module releases the camera, the electronic device can call the camera release callback function and send a notification message to the first functional module. Therefore, the first functional module can promptly call the camera after receiving the notification message, and then the electronic device can assign the camera to the first functional module.

In another possible implementation of the first aspect, the first functional module includes a close viewing reminder module. In this embodiment, after the camera is assigned to the first functional module (ie, the close viewing reminder module), the above method further includes: the close viewing reminder module acquires the image collected by the camera. Moreover, the close viewing reminder module analyzes the image and reminds the user of the viewing distance based on the results obtained from analyzing the image.

In a second aspect, a camera allocation method is provided. The method is applied to an electronic device. The electronic device includes a camera, a camera functional module, a first functional module and a second functional module that support using the camera to implement corresponding functions; The first function corresponding to a functional module is in an enabled state, and the current camera is assigned to the second functional module.

The method includes:

The second function module sends a camera release instruction to the camera function module; in response to the camera release instruction sent by the second function module, the camera function module releases the camera and assigns the camera to the first function module. In this way, the first function module can promptly call the camera to implement the first function after the camera is released. At the same time, the first functional module does not need to continuously try to open the camera, which can avoid waste of CPU resources.

In another possible implementation of the second aspect, the above allocation of the camera to the first functional module may specifically include: the camera functional module sending a notification message that the camera is released to the first functional module. Based on the notification message, the first functional module sends a second camera calling instruction to the camera functional module. In response to the second camera calling instruction, the camera function module assigns the camera to the first function module. In this solution, after the second functional module releases the camera, the camera functional module actively notifies the first functional module that the camera is released. This can prevent the first functional module from not being able to detect the news that the camera is released in time, and can also prevent the first functional module from continuously trying to open the camera, which can avoid waste of CPU resources.

In a possible implementation of the second aspect, before the second functional module sends a camera release instruction to the camera function module, the above method further includes: the second functional module sends a third camera calling instruction to the camera function module; in response to The second camera calls the instruction, and the camera function module allocates the camera to the second function module. When the second functional module needs to use the camera, it can send a third camera calling instruction to the camera functional module. After that, the camera functional module can assign the camera to the second functional module.

In another possible implementation of the second aspect, the first functional module's priority for using the camera is lower than the second functional module's priority for using the camera. In this way, when the first functional module is using the camera, if the second functional module requests to call the camera, the electronic device will allocate the right to use the camera to the second functional module. That is, the second functional module is allowed to seize the priority of using the camera from the first functional module. If the second functional module is using the camera, and the first functional module requests to call the camera, the electronic device will not allow the first functional module to seize the second functional module's right to use the camera.

In another possible implementation of the second aspect, before the second function module sends the third camera calling instruction to the camera function module, the above method further includes: in response to the opening operation of the first function, the first function module Start the first function. Furthermore, the first function module sends a fourth camera calling instruction to the camera function module. After receiving the fourth camera calling instruction, the camera function module allocates the camera to the first function module in response to the fourth camera calling instruction.

In this embodiment, after the camera is assigned to the first functional module, if the second functional module initiates a third camera calling instruction, then in response to the third camera calling instruction, the camera function module needs to transfer the camera from the first The functional module is released, and then the camera can be assigned to the second functional module.

In this solution, if the first function is turned on first, the camera will be assigned to the first function module. If the function corresponding to the second function module is turned on later, the second function module will seize the right to use the camera, causing the first function to be temporarily interrupted. At this time, the camera needs to be released from the first functional module and then assigned to the second functional module. Then, when the second function module quits using the camera, the camera function module notifies the first function module that the camera is released, so that the first function module can re-call the camera in time and restore the first function.

In another possible implementation of the second aspect, the electronic device further includes a HIDL camera interface service module. After the first function module starts the first function, the above method also includes: the first function module sends a fourth registration request to register the camera release callback function to the HIDL camera interface service module. In response to the fourth registration request, the registered camera release callback function adds the registration record of the camera release callback function by the first functional module. In this implementation, the above-mentioned camera function module sends a notification message that the camera is released to the first functional module, which may specifically include: the camera function module triggers the sending of a first notification message that the camera is released to the HIDL camera interface service module. In response to the first notification message, the HIDL camera interface service module calls the camera release callback function and sends a second notification message that the camera is released to the first functional module.

In this solution, the first functional module registers the camera release callback function in the HIDL camera interface service module when it is started. Afterwards, when the first function is turned on, if other functional modules quit using the camera, the camera function module notifies the HIDL camera interface service module, causing the HIDL camera interface service module to call the camera release callback function to notify the first functional module of the camera. News of being released. Therefore, the first functional module can sense that the camera is released in time, and re-call the camera in time to realize the first function.

In another possible implementation of the second aspect, after the camera function module releases the camera from the first function module in response to the third camera calling instruction, the above method further includes: the first function module provides services to the HIDL camera interface The module sends the fifth registration request to register the camera release callback function. In response to the fifth registration request, the registered camera release callback function adds the registration record of the camera release callback function of the first functional module. In this implementation, the above-mentioned camera function module sends a notification message that the camera is released to the first functional module, which may specifically include: the camera function module triggers the sending of a first notification message that the camera is released to the HIDL camera interface service module. In response to the first notification message, the HIDL camera interface service module calls the camera release callback function based on the registration record, and sends a second notification message that the camera is released to the first functional module.

In this solution, when the camera is preempted by other functional modules, that is, after the camera is released from the first functional module, the first functional module registers the camera release callback function. In this way, when the second functional module exits the use of the camera, the camera functional module can also trigger the HIDL camera interface service module to call the camera release callback function, and send a notification message that the camera is released to the first functional module based on the registration record. Likewise, the first functional module can sense the release of the camera in time and re-call the camera in time to realize the first function.

In another possible implementation of the second aspect, the first functional module may be started after the camera is assigned to the second functional module. In this embodiment, after the camera function module assigns the camera to the second function module in response to the third camera calling instruction, the above method further includes: in response to the opening operation of the first function, the first function module starts the first function module. Function. The first functional module sends a sixth registration request to the HIDL camera interface service module. The HIDL camera interface service module first adds the registration record of the camera release callback function of the first functional module. Later, when the second functional module sends a camera release instruction to the camera function module, the camera function module triggers the HIDL camera interface service module to call the camera release callback function, and sends a notification message that the camera is released to the first functional module based on the registration record.

In this solution, if the camera is in an occupied state when the first functional module is started, the first functional module can first register the camera release callback function. When the function module occupying the camera exits from using the camera, the camera function module triggers the HIDL camera interface service module to call the camera release callback function, and notifies the first function module that the camera is released based on the registration record. In this way, the first function module can call the camera in time after the camera is released to realize the first function.

In a third aspect, an electronic device is provided, including: a processor, a camera and a memory; the memory and the camera are respectively coupled to the processor. This camera is used to capture images. The memory is used to store computer-executed instructions. When the electronic device is running, the processor executes the computer-executed instructions stored in the memory, so that the electronic device performs the camera allocation method in any one of the above-mentioned first aspects.

In a fourth aspect, a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the computer-readable storage medium is run on a computer, the computer can execute the camera allocation method of any one of the above-mentioned first aspects. .

A fifth aspect provides a computer program product containing instructions that, when run on an electronic device, enables the electronic device to execute the camera allocation method of any one of the above first aspects.

A sixth aspect provides a device (for example, the device may be a chip system). The device includes a processor and is used to support an electronic device to implement the functions involved in the above-mentioned first aspect. In a possible design, the device further includes a memory, which is used to store necessary program instructions and data of the electronic device. When the device is a chip system, it may be composed of a chip or may include a chip and other discrete components.

Among them, the technical effects brought by any one of the design methods in the second to sixth aspects can be found in the technical effects brought by different design methods in the first aspect, and will not be described again here.

Description of the drawings

Figure 1A is a schematic diagram of a user using a smart screen provided by an embodiment of the present application;

Figure 1B is a schematic diagram of a display interface of a smart screen provided by an embodiment of the present application;

Figure 1C is a schematic diagram of a display interface of a smart screen provided by an embodiment of the present application;

Figure 1D is a schematic diagram of a display interface of a smart screen provided by an embodiment of the present application;

Figure 1E is a schematic diagram of a display interface of a smart screen provided by an embodiment of the present application;

Figure 2A is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present application;

Figure 2B is a schematic diagram of the software architecture of an electronic device provided by an embodiment of the present application;

Figure 3 is a schematic flow chart of the close viewing reminder module calling the camera provided by the embodiment of the present application;

Figure 4A is a schematic flowchart of a camera allocation method provided by an embodiment of the present application;

Figure 4B is a schematic flowchart of a camera allocation method provided by an embodiment of the present application;

Figure 4C is a schematic flowchart of a camera allocation method provided by an embodiment of the present application;

Figure 5 is a schematic flow chart of a camera allocation method provided by an embodiment of the present application;

Figure 6 is a schematic flowchart of a camera allocation method provided by an embodiment of the present application;

Figure 7 is a schematic flow chart of a camera allocation method provided by an embodiment of the present application;

Figure 8 is a schematic diagram of the software architecture of the smart screen provided by the embodiment of the present application;

Figure 9 is a schematic flowchart of a camera allocation method provided by an embodiment of the present application;

Figure 10 is a schematic flow chart of a camera allocation method provided by an embodiment of the present application;

Figure 11 is a schematic structural diagram of a chip system provided by an embodiment of the present application.

Detailed ways

When a user uses an electronic device, if the distance between the eyes and the display screen of the electronic device is too close, the user's vision may be easily damaged. Therefore, in order to protect the user's vision as much as possible when the user uses the electronic device, the electronic device can monitor the distance between the user's eyes and the display screen of the electronic device when using the electronic device, and detect that the distance between the user's eyes and the display screen has exceeded Reminder in the near future.

In the scene shown in Figure 1A, when the user 10 is using the smart screen 1, the smart screen 1 can monitor the distance between the user's eyes (or face) and the display screen. In some embodiments, when the smart screen 1 detects that the distance between the user's 10 eyes and the display screen of the smart screen 1 is too close, it can remind the user 10 . For example, the smart screen 1 can display prompt information 11 as shown in Figure 1B on the display screen to remind the user of the viewing distance.

Some teenagers or children may not have enough self-control and may easily have their eyes too close to the display screen when using electronic devices. At present, some electronic devices have youth mode or child mode, which are specially designed for teenagers or children to use electronic devices. In youth mode or child mode, a close viewing reminder function is provided. Parents can turn on the close viewing mode reminder function in youth mode or child mode.

In some embodiments, as shown in FIG. 1C , the smart screen 1 can display application icons of multiple applications installed on the smart screen in the display interface 12 of all applications. These include: icons corresponding to applications such as media center, settings, clock, app store, child mode, and family camera. In the interface 12, the user can select the icon 12a corresponding to the child mode to enter the child mode function setting interface, such as the child mode function setting interface 13 provided by the smart screen 1 as shown in Figure 1D.

The function setting interface 13 includes a child mode switch 14, and the switch 14 is used to turn on or off the child mode. The function setting interface 13 also includes a switch 15 for a close viewing reminder function. Switch 15 is used to turn on or off the close viewing reminder function. After the close viewing reminder function of smart screen 1 is turned on, smart screen 1 can monitor the distance between the eyes of the user viewing smart screen 1 and the display screen of smart screen 1 in child mode. Moreover, when it is detected that the distance between the user's eyes and the display screen of the smart screen 1 is too close, a prompt message is issued, such as prompt message 11 shown in Figure 1B.

The function setting interface 13 shown in Figure 1D also includes a switch 16 for lying down reminders, a switch 17 for only close viewing and lying down reminders for children, a single use duration setting option 18, and so on. Among them, switch 16 is used to turn on or off the reminder function that monitors whether the user is in a lying position to watch the smart screen 1, switch 17 is used to turn on or off the switch of whether to only remind children about distance and lying posture, and setting option 18 is used to set the unit. The maximum time a child is allowed to use the smart screen 1 at a time. It should be understood that in other embodiments, the function setting interface 13 may also include other setting options or switches.

In some embodiments, after the user sets different functions provided by the child mode application, the child mode application will save the user's settings for each function. For example, the user can set each function to the following modes in the interface shown in Figure 1D: the close viewing reminder function is turned on, the lying posture reminder function is turned on, and the close viewing reminder function and the lying posture reminding function are turned off for children only, And the duration of single use is limited to 30 minutes. After that, every time the user turns on the child mode (turns on the switch 14 shown in Figure 1D), a reminder will be given according to the mode set by the above function.

In related technology, in order to realize the function of close viewing reminder, the camera of the smart screen 1 can be used to obtain the image in front of the display screen, and based on the image analysis, whether it is necessary to remind the user of the viewing distance. After the user turns on the close viewing reminder function by operating the switch 15 shown in Figure 1D, the smart screen 1 can enter the interface 19 shown in Figure 1D. At the same time, the smart screen 1 can raise a hidden camera (the camera 20 shown in Figure 1D), and then collect the image in front of the display screen through the camera.

However, the camera of the smart screen 1 can usually only be used by one functional module at the same time. On the premise that the close viewing reminder function is turned on, if there are other functional modules that need to use the camera, and the camera use priority of other functional modules is higher than that of the close viewing reminder module, at this time, the close viewing reminder function will be forced Interrupt. It should be noted that in other embodiments, the above-mentioned close viewing reminder function may also be named by other names such as distance reminder function, vision protection function, etc.

Taking the other functional module as a home camera as an example, compared with the close viewing reminder module, the home camera has a higher priority for the use of the camera than the close viewing reminder module. Therefore, when the close viewing reminder function is turned on, if the user turns on the home camera, the camera will be occupied by the home camera. Moreover, when the home camera is using the camera, the close viewing reminder module cannot use the camera, so the close viewing reminder will be interrupted. In other words, the smart screen cannot continue to monitor and remind the user of the distance between the eyes and the display. In some embodiments, when the camera is preempted by other functional modules, the smart screen can display prompt information on the display screen.

After turning on the close viewing reminder function of the child mode, the user can select the "return" option in the interface 13 to return to the entire application interface 12 as shown in Figure 1C. In some embodiments, after turning on the child mode, some applications may not be supported for use by children in the child mode. Therefore, after the user selects the "return" option in the interface 13, the user can also return to all application interfaces that are only displayed to children, where some of the application icons displayed in the interface 12 are no longer displayed to children. In the embodiment of this application, the function of allowing the use of a family camera in child mode is taken as an example for description. That is, when the user selects the "return" option in the interface 13 and returns to the interface of all applications, the icon 12b of the home camera is still displayed in the interface.

Furthermore, after turning on the child mode, the user can also select the home camera icon 12b as shown in Figure 1C in the interface of all applications to enter the home camera interface 21 as shown in Figure 1E. After opening the home camera and entering interface 21, the home camera will seize the right to use the camera of the smart screen, causing the close viewing reminder module to be unable to use the camera for close viewing reminders. In this scenario, the smart screen 1 can display the prompt information 22 of the interface as shown in Figure 1E on the display screen to remind the user that the current close viewing reminder function is temporarily unavailable.

The user can exit the home camera by selecting the "Exit" option 23 in the interface 21 shown in Figure 1E. After the user exits the home camera, the camera will be released. At this point, the camera becomes idle again. Since the close viewing reminder function is still on, the smart screen should resume the close viewing reminder function after the home camera quits using the camera. However, the close viewing reminder module usually cannot detect the release of the camera in time. In other words, after the home camera quits using the camera, the close viewing reminder module cannot call the camera in time, that is, the smart screen cannot restore the close viewing reminder function in time.

The interface of the home camera shown in FIG. 1E also includes the function options "shooting" option 24, "video recording" option 25, and "gallery" option 26 provided by the home camera. Among them, the "shooting" option 24 is used for the user to capture images using the home camera; the "video recording" option 25 is used for the user to record videos using the home camera; and the "gallery" option 26 is used for the user to view images and videos captured using the home camera, etc. The user can use the "shooting" option 24 or the "video" option 25 to capture images or record videos using a home camera, and the specific operation process of the user using the "gallery" option 26 to view images can be referred to the description in the related art. In the embodiments of the present application No further details will be given. It should be understood that in other embodiments, the functional interface of the home camera may also include other functional options.

Based on this, embodiments of the present application provide a camera allocation method. On the premise that the first function corresponding to the first functional module is in an open state and the current camera is allocated to the second functional module, when a target for the second functional module is detected. After the first operation of the functional module, the smart screen releases the camera from the second functional module in response to the first operation. Then, since the first function is turned on, the smart screen assigns the camera to the first functional module, so that the first functional module uses the camera to implement the first function. In this way, as long as the first function is turned on, the smart screen can allocate the camera to the first functional module after other functional modules quit using the camera (that is, release the camera). Thus, the first functional module can call the camera in time to realize the first function.

For example, the first functional module may be the above-mentioned close viewing reminder module or other functional modules that need to sense whether the camera is available in real time. The second functional module may be the above-mentioned home camera functional module, video call functional module or other functional modules that need to be used. The camera implements the corresponding function module. In some embodiments, the second functional module has a higher priority for using the camera than the first functional module. After being started, the first functional module can reside in the background of the electronic device.

In some embodiments, the above method may be applied to an electronic device including a camera. For example, the electronic device may be a mobile phone, a tablet computer, a personal computer (PC), a smart screen, a desktop, a laptop, a handheld computer, a notebook computer, or an ultra-mobile personal computer (UMPC). ), netbooks, smart watches and other wearable devices, artificial intelligence (AI) speakers and vehicle-mounted equipment, or various teaching aids (such as learning machines, early childhood education machines), smart toys, portable robots, personal digital assistants ( Personal digital assistant (PDA), augmented reality (AR)\virtual reality (VR) equipment, media player and other equipment, it can also be a device with mobile office function, a device with smart home function, a device with Equipment with audio-visual entertainment functions, equipment supporting smart travel, etc. The embodiments of the present application do not place any special restrictions on the specific form of the device.

FIG. 2A is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application. The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 130, a power module 140, a communication interface 150, a wireless communication module 160, an audio module 170, a display screen 180, a camera 190, a button 191, and the like.

By way of example, the electronic device 100 may be the above-mentioned smart screen 1 . It can be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100 . In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown in the figures, or some components may be combined, some components may be separated, or some components may be arranged differently. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), an image signal processor ( image signal processor (ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU), etc. . Among them, different processing units can be independent devices or integrated in one or more processors. For example, the processor 110 is configured to execute the camera allocation method in the embodiment of the present application.

The controller may be the nerve center and command center of the electronic device 100 . The controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in processor 110 is cache memory. This memory may hold instructions or data that have been recently used or recycled by processor 110 . If the processor 110 needs to use the instructions or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 110 is reduced, thus improving the efficiency of the system.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 100 . The external memory card communicates with the processor 110 through the external memory interface 120 to implement the data storage function. Such as saving music, videos, etc. files in external memory card.

Internal memory 130 may be used to store computer executable program code, which includes instructions. The processor 110 executes instructions stored in the internal memory 130 to execute various functional applications and data processing of the electronic device 100 . The internal memory 130 may include a program storage area and a data storage area. Among them, the stored program area can store the operating system and at least one application program required for a function (such as a sound playback function, an image playback function, etc.).

In addition, the internal memory 130 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

The power module 140 can be used to receive power input and provide power to the processor 110, the internal memory 130, the wireless communication module 160, the display screen 180, the camera 190, etc. In some embodiments, the power module 140 may also be disposed in the processor 110 .

The communication interface 150 can be used to communicate with external devices such as control equipment, set-top boxes, routers, and USB flash drives. The communication interface 150 can be a network port or a universal serial bus (universal serial bus, USB) interface or any other possible interface.

The USB interface is an interface that complies with the USB standard specifications. It can be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc.

The wireless communication module 160 can provide applications on the electronic device 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (bluetooth, BT), and global navigation satellite system. (global navigation satellite system, GNSS), frequency modulation (FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves through the antenna, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 . The wireless communication module 160 can also receive the signal to be sent from the processor 110, frequency modulate it, amplify it, and convert it into electromagnetic waves through the antenna for radiation.

The electronic device 100 can implement audio functions through the audio module 170, an application processor, and the like. Such as music playback, recording, etc.

The audio module 170 is used to convert digital audio signals into analog audio signal outputs, and is also used to convert analog audio inputs into digital audio signals. Audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be provided in the processor 110 , or some functional modules of the audio module 170 may be provided in the processor 110 . Audio module 170 may include speaker 170A and microphone 170B.

Speaker 170A, also called "speaker", is used to convert audio electrical signals into sound signals. The electronic device 100 can listen to music through the speaker 170A, or conduct video conferencing, etc.

Microphone 170B, also called a "microphone", is used to convert sound signals into electrical signals. When making a video call, video conference, or using a voice assistant, the user can speak by approaching the microphone 170B with the human mouth and input the sound signal to the microphone 170B. The electronic device 100 may be provided with at least one microphone 170B. In other embodiments, the electronic device 100 may be provided with two microphones 170B, which in addition to collecting sound signals, may also implement a noise reduction function. In other embodiments, the electronic device 100 can also be provided with three, four or more microphones 170B to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions, etc.

The display screen 180 is used to display images, videos, etc. The electronic device 100 implements display functions through a GPU, a display screen 180, an application processor, and the like. The GPU is an image processing microprocessor and is connected to the display screen 180 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering. Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

Camera 190 is used to capture still images or video. In some embodiments, the electronic device 100 may include 1 or N cameras 190, where N is a positive integer greater than 1. In some embodiments, the camera 190 may be a lifting camera. Usually, the pop-up camera is hidden inside the electronic device 100 and is not visible to the user. When the user uses the electronic device 100 to conduct a video call or video conference with other users, the lifting camera can pop up from the top of the electronic device 100 so that the lifting camera can collect the user's image and transmit the user's image through the wireless communication module 160 and the antenna. Sent to other users' devices. In other embodiments, the camera 190 may also be embedded inside the display screen of the electronic device 100 .

The buttons 191 include a power button, a volume button, a setting button, etc. The key 191 may be a mechanical key. It can also be a touch button. The electronic device 100 may receive key inputs and generate key signal inputs related to user settings and function control of the electronic device 100 .

The camera allocation methods in the following embodiments can be implemented in the electronic device 100 having the above hardware structure.

FIG. 2B is a software structure block diagram of the electronic device 100 according to the embodiment of the present application.

The layered architecture divides the software into several layers, and each layer has clear roles and division of labor. The layers communicate through software interfaces. In some embodiments, the Android system is divided into five layers, from top to bottom: application layer, application framework layer, Android runtime (Android runtime, ART) and native C/C++ library, hardware abstraction layer (HardwareAbstract) Layer, HAL) and kernel layer.

The application layer can include a series of application packages.

As shown in FIG. 2B , the application package may include applications such as media center, settings, clock, application mall, two-way mode, home camera, first functional module, and second functional module.

The application framework layer provides an application programming interface (API) and programming framework for applications in the application layer. The application framework layer includes some predefined functions.

As shown in Figure 2B, the application framework layer can include a window manager, content provider, view system, resource manager, notification manager, activity manager, input manager, etc.

The window manager provides window management service (Window Manager Service, WMS). WMS can be used for window management, window animation management, surface management, and as a transfer station for the input system.

Content providers are used to store and retrieve data and make this data accessible to applications. This data can include videos, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

The view system includes visual controls, such as controls that display text, controls that display pictures, etc. A view system can be used to build applications. The display interface can be composed of one or more views. For example, a display interface including a text message notification icon may include a view for displaying text and a view for displaying pictures.

The resource manager provides various resources to applications, such as localized strings, icons, pictures, layout files, video files, etc.

The notification manager allows applications to display notification information in the status bar, which can be used to convey notification-type messages and can automatically disappear after a short stay without user interaction. For example, the notification manager is used to notify download completion, message reminders, etc. The notification manager can also be notifications that appear in the status bar at the top of the system in the form of charts or scroll bar text, such as notifications for applications running in the background, or notifications that appear on the screen in the form of conversation windows. For example, text information is prompted in the status bar, a beep sounds, the electronic device vibrates, the indicator light flashes, etc.

The Activity Manager can provide Activity Management Service (AMS), which can be used for the startup, switching, and scheduling of system components (such as activities, services, content providers, and broadcast receivers) as well as the management and scheduling of application processes. .

The input manager can provide input management service (Input Manager Service, IMS), and IMS can be used to manage system input, such as touch screen input, key input, sensor input, etc. IMS takes out events from the input device node and distributes the events to appropriate windows through interaction with WMS.

The Android runtime includes core libraries and Android runtime. The Android runtime is responsible for converting source code into machine code. The Android runtime mainly includes the use of ahead of time (AOT) compilation technology and just in time (JIT) compilation technology.

The core library is mainly used to provide basic Java class library functions, such as basic data structures, mathematics, IO, tools, databases, networks and other libraries. The core library provides APIs for users to develop Android applications.

Native C/C++ libraries can include multiple function modules. For example: surface manager, media framework, libc, OpenGL ES, SQLite, Webkit, etc.

Among them, the surface manager is used to manage the display subsystem and provides the integration of 2D and 3D layers for multiple applications. The media framework supports a variety of commonly used audio and video formats for playback and recording, as well as static image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc. OpenGL ES provides the drawing and manipulation of 2D graphics and 3D graphics in applications. SQLite provides a lightweight relational database for electronic device 100 applications.

The hardware abstraction layer runs in user space, encapsulates the kernel layer driver, and provides a calling interface to the upper layer. The hardware abstraction layer can include a display module, an audio module, a camera module (camera HAL), and a Bluetooth module.

The kernel layer is the layer between hardware and software. The kernel layer contains at least display driver, camera driver, audio driver, and sensor driver.

In the embodiment of this application, when applications such as child mode and home cameras need to use the camera, the camera module of the HAL layer (camera HAL) can be called through the camera service module (camera server) of the framework layer, and then the camera HAL calls the camera hardware ( camera hardware) to achieve. Further, the camera HAL calls the camera driver at the kernel layer to drive the camera to provide corresponding functional services for the application.

The camera allocation method proposed in the embodiment of the present application can be specifically applied to the fact that after the first functional module that needs to be implemented using a camera is started, the camera is preempted by a second functional module with a higher priority for use by other cameras, resulting in the first function being lost. Scenarios where the functions implemented by the module using the camera are forced to be interrupted. In this scenario, if the second function module quits using the camera, it means that the camera is released and returns to the idle state. In the camera allocation method provided by the embodiment of the present application, when it is detected that the second functional module quits using the camera, a first notification message can be sent to the first functional module to notify the first functional module that the camera is released. In this way, the first functional module can promptly sense that the camera is released, and then re-call the camera to promptly restore the functions implemented by the first functional module using the camera.

Taking the first functional module as a close viewing reminder module and the close viewing reminder module calling the camera to implement the close viewing reminder function as an example, the specific process of the close viewing reminder module calling the camera will be introduced. The close viewing reminder module can be a functional module in the child mode application. Alternatively, the close viewing reminder module can also be a standalone application. As shown in Figure 3, it is the specific implementation process of calling the camera by the close viewing reminder module in some embodiments of the present application.

In response to the opening operation of the close viewing reminder function, the close viewing reminder module sends a camera calling instruction to the camera function module.

Among them, the camera function module may include a camera server module in the framework layer and a camera HAL module in the HAL layer.

The camera service module responds to the camera calling instruction and starts the camera. Moreover, in response to the camera calling instruction, the camera function module will also assign the camera to the close viewing reminder module.

It should be noted that after the camera is assigned to the close viewing reminder module, the close viewing reminder module can control the camera and transmit images with the camera.

The camera collects images. The camera sends images to the camera function module. Afterwards, the camera function module sends the image collected by the camera to the close viewing reminder module.

The Close View Alert module analyzes the image. The close viewing reminder module determines whether it is necessary to remind the user to pay attention to the viewing distance based on the analysis results.

Providing users with close viewing reminders mainly monitors the distance between the user's eyes and the display screen, and reminds the user to pay attention to the viewing distance when the distance between the user's eyes and the display screen is too close. Therefore, in some embodiments, it may be specifically detected whether the distance between the user's eyes and the display screen is less than a preset distance, and whether it is necessary to remind the user of the viewing distance. Furthermore, if it is detected that the distance between the user's eyes and the display screen is less than the preset distance, the smart screen can remind the user to watch at a close distance. Among them, analyzing the image to determine the distance between the user's eyes and the display screen can be implemented specifically through image analysis and other algorithms, related neural network models, etc. The specific implementation process can be referred to the introduction in related technologies. In the embodiments of this application No further details will be given.

The camera of the smart screen is usually set near the display screen of the smart screen. The camera 20 shown in Figure 1D is set above the display screen of the smart screen and is a hidden lifting camera. Then, if the distance between the user's eyes and the display screen is closer, the user's eyes will account for a larger proportion of the images collected by the camera. On the contrary, if the distance between the user's eyes and the display screen is farther, the user's eyes will account for a smaller proportion of the image captured by the camera. Therefore, in other embodiments, the close viewing reminder module can also detect whether the proportion of the user's eyes in the image collected by the camera is greater than the preset proportion to determine whether it is necessary to remind the user of the viewing distance. Furthermore, if it is determined that the proportion of the user's eyes in the image collected by the camera is greater than the preset proportion, the smart screen can remind the user of close viewing.

It should be understood that the preset distance and the preset proportion in the above embodiments can be set to any appropriate value according to the actual situation, and are not limited in the embodiments of the present application. In other embodiments, the smart screen can also analyze the images collected by the camera in other ways, and determine whether it is necessary to remind the user of the viewing distance based on the analysis results.

If it is determined that a reminder is needed based on the analysis results, the close viewing reminder module will issue a prompt message. If it is determined based on the analysis results that no reminder is needed, you can continue to receive new images for analysis and determine whether a reminder is needed.

The technical terms that may be involved in the embodiments of this application are briefly described below.

Hardware abstraction layer interface definition language (HAL interface definition language, HIDL) is the interface between the Android framework and Android HAL. HIDL is intended for inter-process communication.

The camera allocation method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. Please refer to FIG. 4A , which is a schematic flow chart of a camera allocation method provided by an embodiment of the present application. In this embodiment, the electronic device is a smart screen, the first functional module is a close viewing reminder module, and the second functional module is a home camera functional module. It should be understood that in other embodiments, the first functional module and the second functional module may also be other functional modules. The method includes S201-S210, where:

S201. The smart screen starts.

S202. The smart screen obtains the startup operation of the close viewing reminder module.

In some embodiments, S202 may be that the user performs a startup operation for the close viewing reminder module. In some embodiments, the close viewing reminder module may be a feature of Kids Mode. For example, the user can turn on the switch 15 in the interface shown in FIG. 1D to activate the close viewing reminder function.

S203. In response to the startup operation of the close viewing reminder module, the smart screen activates the close viewing reminder function.

S204. The smart screen assigns the camera to the close viewing reminder module.

S205. The smart screen obtains the startup operation for the home camera function module.

In some embodiments, the home camera function module may invoke the camera after startup. Therefore, the smart screen can start the home camera function module after obtaining the startup operation for the home camera function module. Afterwards, in order to realize the function of the home camera, the home camera function module will send the camera calling instruction of the camera.

S206. In response to the startup operation of the home camera function module, release the camera from the close viewing reminder module.

S207. The smart screen assigns the camera to the home camera function module.

After the smart screen assigns the camera to the home camera function module, the related functions of the home camera can be used.

S208. The smart screen receives the exit operation for the home camera function module.

It should be noted that the above-mentioned startup operation for the close viewing reminder module and the startup operation and exit operation for the home camera function module can also be named by other names. For example, the exit operation for the home camera function module may be named the first operation, the start operation for the home camera function module may be named the second operation, and the start operation for the close viewing reminder module may be named the third operation. Operation, etc.

S209. In response to the exit operation of the home camera function module, the smart screen releases the camera from the home camera function module.

Since the close viewing reminder function is still on, after the camera is released from the home camera function module, the smart screen can reassign the camera to the close viewing reminder module, such as the S210.

S210. The smart screen assigns the camera to the close viewing reminder module.

It is understandable that after S210, the close viewing reminder module can obtain the image collected by the camera, and analyze whether it is necessary to remind the user of the viewing distance based on the image. Specifically, the close viewing reminder module sends a reminder message to the user when analyzing the image to determine that the user's viewing distance is too close.

In some embodiments, the above-mentioned S210 may be that the smart screen first sends a notification message that the camera is released to the close viewing reminder module, and then the close viewing reminder module initiates a camera calling instruction to the camera based on the notification message. Since the current camera has been released and is in an idle state, in response to the camera calling instruction sent by the close viewing reminder module, the smart screen can assign the camera to the close viewing reminder module. It should be noted that in order to distinguish the camera calling instructions sent by different functional modules at different times, "first" and "second" can be used to distinguish different camera calling instructions. For example, the camera calling instruction sent by the close viewing reminder module based on the notification message may be named the first camera calling instruction.

Further, in some embodiments, the smart screen sends a notification message to the close viewing reminder module after the camera is released, which can be implemented by calling the camera release callback function. It is understandable that before the smart screen calls the camera release callback function to send a notification message to the close viewing reminder module, the close viewing reminder module needs to register the camera release callback function first. The camera release callback function is used to be called after the camera is released, and after calling the camera release callback function, it can trigger sending a notification message to the function module registered with the camera release callback function.

The close viewing reminder module has registered the camera release callback function. When the camera is occupied, it waits for the smart screen to call the camera release callback function to obtain the notification message that the camera is released. Moreover, the close viewing reminder module can call the camera after receiving the notification message that the camera is released. In some embodiments, the close viewing reminder module can register the camera release callback function while activating the close viewing reminder function. In this way, if the close viewing reminder module uses the camera and the right to use the camera is preempted by other functional modules, it can also obtain the released camera information sent by the smart screen by calling the camera release callback function after other functional modules release the camera. information.

That is, in some embodiments, after the above S202, the above method further includes: the close viewing reminder module initiates a registration request for the camera release callback function. In response to the registration request, the smart screen can add the close viewing reminder module to register the registration record of the camera release callback function. After that, as long as it detects that the camera is released (such as S209 above), the smart screen can call the camera release callback function and send a notification that the camera is released to the registered camera release callback function (close viewing reminder module) based on the registration record. information.

In other embodiments, the close viewing reminder module can also register the above-mentioned camera release callback function after the right to use the camera is preempted by other functional modules. That is, in some embodiments, after the above S206, the above method further includes: the close viewing reminder module initiates a registration request for the camera release callback function. Similarly, in response to the registration request, the smart screen can add a registration record of the close viewing reminder module to the camera release callback function. In this way, after the above S209, the smart screen can also call the camera release callback function, and send a notification message that the camera is released to the registered camera release callback function (close viewing reminder module) based on the registration record.

In the technical solution provided by the embodiment of this application, the close viewing reminder module registers the camera release callback function when the camera usage right is preempted by other functional modules. The close viewing reminder module can also register the camera release callback function when the camera is used by other functional modules. After the function module (such as the home camera function module) is released, the notification message sent by the smart screen by calling the camera release callback function is promptly perceived. In this way, it is convenient for the close viewing reminder module to re-request to call the camera in time, so that the smart screen can reassign the camera to the close viewing reminder module.

In the technical solution provided by the embodiment of this application, when the close viewing reminder function is turned on, if the camera is assigned to a home camera or other functional module, after the home camera or other functional module releases the camera, the smart screen will Reassign the camera to the close view reminder module. In this way, the close viewing reminder module can promptly regain the right to use the camera after the camera is released, so as to realize the close viewing reminder function. At the same time, when the camera is occupied by other functional modules, the close viewing reminder module does not need to continuously try to open the camera, which can avoid waste of CPU resources.

In the above embodiment, the close viewing reminder module is activated first and the home camera function module is activated later. In other embodiments, the close viewing reminder module may be started after the home camera function module is started. In other words, before the close viewing reminder module is activated, the smart screen has assigned the camera to the home camera function module. When the close viewing reminder module is activated, the camera is occupied. At this time, the close viewing reminder module can first start the close viewing reminder function module in the background, but because the camera is occupied, the close viewing reminder function cannot remind normally. At the same time, the close viewing reminder module can request to register the camera release callback function, so that after the camera is released, the smart screen can send a notification message that the camera is released to the close viewing reminder module by calling the camera release callback function.

Please refer to FIG. 4B , which is a schematic flow chart of a camera allocation method provided by an embodiment of the present application. The method includes S301-S309. in:

S301. The smart screen starts.

S302. The smart screen obtains the startup operation for the home camera function module.

S303. In response to the startup operation of the home camera function module, the smart screen assigns the camera to the home camera function module.

S304. The smart screen obtains the startup operation of the close viewing reminder function module.

S305. In response to the startup operation of the close viewing reminder module, the smart screen activates the close viewing reminder function.

It can be seen from the description of the above embodiment that the current camera is occupied by the home camera function module, and the close viewing reminder module cannot obtain the right to use the camera, so the close viewing reminder function cannot be used normally. Therefore, the close viewing reminder module can first register the camera release callback function, that is, the close viewing reminder module initiates a registration request for the camera release callback function. In some embodiments, after S304, if it is detected that the current camera is occupied, the close viewing reminder module may initiate a registration request for the camera release callback function.

S306. The smart screen adds the registration record of the camera release callback function by the close viewing reminder module.

It should be noted that the above-mentioned S307 may specifically include: the smart screen receives a registration request for the camera release callback function initiated by the close viewing reminder module; in response to the registration request, the smart screen adds a close viewing reminder module to register the camera release callback function. Registration records.

S307. The smart screen obtains the exit operation for the home camera function module.

S308. In response to the exit operation of the home camera function module, the smart screen releases the camera from the home camera function module.

S309. The smart screen calls the camera release callback function and assigns the camera to the close viewing reminder module based on the registration record.

Afterwards, the close viewing reminder module can implement the close viewing reminder function based on the camera.

For the specific implementation of S301-S309, reference can be made to the description in the embodiment of S201-S210, which will not be described again here.

In the technical solution provided by the embodiment of this application, if the user activates the close viewing reminder function module after the camera is assigned to a home camera or other functional module, the close viewing reminder module cannot directly obtain the right to use the camera. At this time, while starting the close viewing reminder function module, the close viewing reminder module registers the camera release callback function. In this way, the close viewing reminder module can promptly sense that the camera is released after the camera is released, call the camera in time, and obtain the right to use the camera, so as to realize the close viewing reminder function. At the same time, when the camera is occupied by other functional modules, the close viewing reminder module does not need to continuously try to open the camera, which can avoid waste of CPU resources.

Further, the following description will be based on the interaction between functional modules within the electronic device. Please refer to FIG. 4C , which is a schematic flow chart of a camera allocation method according to an embodiment of the present application. In this embodiment, the electronic device is a smart screen, the first functional module is a close viewing reminder module, and the second functional module is a home camera functional module. It should be understood that in other embodiments, the first functional module and the second functional module may also be other functional modules. The method includes S401-S413, among which:

S401. In response to the opening operation of the close viewing reminder function, the close viewing reminder module sends a camera calling instruction to the camera function module.

In some embodiments, the close viewing reminder function may be a functional module in the child mode application. For example, the user's operation to turn on the close viewing reminder function may be that the user turns on the switch 15 as shown in Figure 1D. In other embodiments, the close viewing reminder function may also be an independent application or a small program.

When the close viewing reminder module is a functional module in a certain application, the application may be a child mode application. Based on the above description, it can be seen that if the user sets the close viewing reminder function to open in advance in the child mode, then as long as the user turns on the child mode, the close viewing reminder module will be automatically turned on. Therefore, in some embodiments, if the close viewing reminder function of the child mode is turned on by default, the above S401 may also include: in response to the opening operation of the child mode, when the close viewing reminder function is turned on, the near viewing reminder function is turned on. The distance viewing reminder module sends a camera calling instruction to the camera function module.

As can be seen from the description of the above embodiments, in some embodiments, the camera function module includes a camera server module and a camera HAL module of the HAL layer. In this embodiment, the close viewing reminder module in S401 may specifically send a camera calling instruction to the camera server module.

It should be noted that the opening operation of the close viewing reminder function in the above S401 can also be understood as the opening operation and starting operation of the close viewing reminder module.

S402. The camera function module responds to the camera calling instruction and starts the camera.

As can be seen from the description of the above embodiments, in some embodiments, the camera function module includes a camera server module in the framework layer and a camera HAL module in the HAL layer. In this embodiment, the above-mentioned S402 may specifically include: in response to the camera calling instruction, the camera server module starts the camera through the camera HAL module.

In some embodiments, after receiving the camera calling instruction sent by the close viewing reminder module, the camera function module may first determine whether the current camera is in an idle state. If it is determined that the camera is in an idle state, it means that the camera can be called. At this time, the camera function module can start the camera in response to the camera calling instruction.

In other embodiments, before receiving the camera calling instruction sent by the close viewing reminder module, the camera may also be being used by other functional modules (such as the third functional module), that is, the camera may be in use by the close viewing reminder module. When calling the command, the camera is occupied. At this time, the camera function module can first notify the third function module that is using the camera to release the camera, and then start the camera in response to the camera calling instruction of the close viewing reminder module.

Among them, if the camera function module detects that the camera is occupied by the third functional module when receiving the camera calling instruction sent by the close viewing reminder module, the camera function module can first compare the third functional module with the close viewing reminder module Priority for camera use. If it is determined that the close viewing reminder module has a higher priority for using the camera than the third functional module, the camera function module may notify the third functional module to release the camera. Afterwards, the camera function module starts the camera in response to the camera calling instruction sent by the close viewing reminder module.

In other embodiments, if the close viewing reminder module has a lower priority for using the camera than the third functional module for using the camera, then for the short distance received when the camera is assigned to the third functional module There should be no response to the camera call command of the viewing reminder module. That is to say, when a third functional module with a higher priority for camera use is using the camera, the close viewing reminder function cannot be started normally.

In the technical solution provided by the embodiment of the present application, when the close viewing reminder module requests the use of the camera, the camera function module is currently in an idle state, or there is currently no other functional module with a higher priority for using the camera to use the camera. In this case, the camera function module can start the camera in response to the camera calling instruction sent by the close viewing reminder module. In this way, it can be ensured that the camera is only used by one functional module at the same time to avoid the problem of camera resource preemption.

S403. The camera function module assigns the camera to the close viewing reminder module.

The camera function module allocates the camera to the close viewing reminder module, which can also be called the camera function module and allocates the resources of the camera to the close viewing reminder module. The camera resources may include camera hardware resources and/or software resources.

S404. The close viewing reminder module controls the camera and transmits image data with the camera.

After the camera function module assigns the camera to the close viewing reminder module, the close viewing reminder module obtains the control and use rights of the camera. At this time, the close viewing reminder module can collect images through the camera and analyze whether the user's viewing distance in the image needs to be reminded.

Based on the above description of Figure 3, it can be seen that the close viewing reminder module collects images through the camera, and specifically needs to transmit images between the camera and the close viewing reminder module through the camera function module. In some embodiments, the above-mentioned S404 may specifically include: the close viewing reminder module controls the camera to collect images, and the camera sends the image to the camera function module. Afterwards, since the current control rights and usage rights of the camera belong to the close viewing reminder module, the camera function module sends the image collected by the camera to the close viewing reminder module.

It can be seen from the above description that, on the premise that the close viewing reminder function is turned on, the close viewing reminder module can control the camera to collect images through the camera function module. In some embodiments, after the close viewing reminder module obtains the camera assigned by the camera function module, it sends a first control instruction to the camera through the camera function module. The first control instruction can be used to control the camera to perform image processing every preset time. collection. In other embodiments, the close viewing reminder module may also send a second control instruction to the camera through the camera service module at preset intervals. The second control instruction is used to instruct the camera to perform image collection once. Among them, the preset time can be set to 5 minutes (min), 1 minute, 30 seconds (s), etc. according to the actual situation.

Further, after the camera completes one image collection, the collected images can be sent to the close-range viewing module through the camera function module. Moreover, after the close viewing reminder module obtains the image, it can analyze the image to determine whether it is necessary to remind the user of the viewing distance. As can be seen from the above description, the close viewing reminder module analyzes the image to determine the distance between the user's eyes and the display screen of the smart screen in the image. When the distance between the user's eyes and the display screen is close, viewing the smart screen may easily damage the user's vision. Therefore, when analyzing the image to determine that the distance between the user's eyes and the display screen is close, the close viewing reminder module can remind the user to pay attention to the viewing distance.

S405. In response to the opening operation of the home camera, the home camera function module sends a camera calling instruction to the camera function module.

In some embodiments, the home camera functionality may be a standalone application. For example, the user's operation to open the close viewing reminder function may be that the user selects the icon 12b corresponding to the home camera in the interface 12 shown in FIG. 1C to open the home camera application and enter the home as shown in FIG. 1E Camera interface 21. In other embodiments, the home camera function can also be a functional module in an application, or it can also be a small program, etc.

It can be understood that the above S405 can also be expressed as the camera function module receiving the camera calling instruction sent by the home camera function module. The camera calling instruction is sent by the home camera function module in response to the opening operation of the home camera.

S406. The camera function module responds to the camera calling instruction and allocates the camera to the home camera function module.

Since a camera is usually only allowed to be used by one functional module at a time, some electronic devices set different usage priorities for different applications or different functional modules to use the camera. When multiple applications or functional modules request the use of the camera at the same time, the camera function module can decide to allocate the camera to the requesting application or functional module in combination with the order in which the priority of use of the camera is preset for each application or functional module. The highest application or functional module.

In some embodiments, after S405, the camera function module receives the camera calling instruction sent by the home camera function module. The camera function module can first compare the camera usage priorities of the close viewing reminder module and the home camera function module. Further, the above-mentioned S406 may specifically include: when it is determined that the home camera has a higher priority for the use of the camera than the close viewing reminder module, allocating the camera to the home camera function module in response to the camera calling instruction. Since the home camera has a higher priority for using the camera than the close viewing reminder module, when receiving the camera calling instruction from the home camera function module, the camera function module allows the home camera to turn on the camera.

Since the smart screen has assigned the camera to the close viewing reminder module before S406, the camera function module needs to first assign the camera to the home camera function module in response to the camera calling instruction of the home camera function module. Release from close viewing reminder module. In some embodiments, the camera function module releases the camera from the close viewing reminder module. Specifically, the camera function module sends a third control instruction to the close viewing reminder module. The third control instruction is used to control the close viewing reminder. The module releases the camera. Afterwards, the close viewing reminder module responds to the third control instruction and can send a camera release instruction to release the camera. In other embodiments, the camera function module releases the camera from the close viewing reminder module, which can also be implemented in other ways, which will not be described in detail in the embodiments of this application.

In some embodiments, in order to distinguish the camera calling instructions sent by the close viewing reminder module from the home camera function module, they can be named with "first", "second", etc. For example, the camera calling instruction sent by the home camera function module in S406 may be named the third camera calling instruction, the camera calling instruction in S401 may be named the fourth camera calling instruction, and so on.

S407. The home camera function module controls the camera and transmits image data with the camera.

It can be understood that after the camera function module assigns the camera to the home camera function module, the home camera function module obtains the control and use rights of the camera. At this time, the home camera function module can control the camera to perform shooting, video recording and other operations.

In some embodiments, the above-mentioned S407 may specifically include the home camera function module acquiring the picture captured by the camera in real time and displaying the picture on the display screen of the smart screen. For example, after the user starts the home camera, the smart screen will enter the interface 21 shown in Figure 1E. In this interface 21, the picture displayed on the display screen of the smart screen 1 is the picture captured by the current camera in real time, including A portrait.

In other embodiments, the above S407 may also include the home camera function module controlling the camera to capture images, record videos, etc. For example, after the user starts the home camera, the smart screen will enter the interface 21 shown in Figure 1E. In this interface 21, the user can capture images by selecting the function option "shoot" option 24 provided by the home camera, that is, Take photos; alternatively, the user can also record videos by selecting the function option "video recording" option 25 provided by the home camera.

Further, after the user uses the home camera to capture images or record videos through the camera through the options provided by the home camera, the images and videos captured by the camera can be stored in a preset designated path. Afterwards, the user can view the captured images and recorded videos through the “Gallery” option in the interface as shown in Figure 1E.

It should be understood that in other embodiments, the home camera function module transmits image data with the camera and can also be used for other functions.

S408. In response to the exit operation of the home camera, the home camera function module sends a camera release instruction to the camera function module.

For example, the user's exit operation for the home camera may be the user selecting the "Exit" option in the interface 21 as shown in Figure 1E. Usually the user chooses to exit the home camera, which means that the home camera will exit the use of the camera. At this time, the home camera function module releases the camera. Therefore, in S408, the smart screen detects the user's exit operation on the home camera, and the home camera function module sends a camera release instruction to the camera function module to instruct the home camera function module to release the camera.

It should be noted that the above-mentioned opening and exit operations of the close viewing reminder module function and the home camera can be operated by the user. Alternatively, the above-mentioned opening operation and exit operation can also be automatically triggered by the smart screen based on other instructions (such as timing instructions, calling instructions of other functional modules, etc.).

S409. In response to the camera release instruction, the camera function module releases the camera from the home camera function module.

S410. The camera function module sends the first notification message to the close viewing reminder module.

In the embodiment of this application, since the user has turned on the close viewing reminder function before turning on the home camera, after the home camera exits from using the camera, the close viewing reminder module should be restored and uses the camera to continue to remind the user of the viewing distance. . Therefore, in order to enable the close viewing reminder module to sense the news that the camera has been released as soon as possible, in the embodiment of the present application, after detecting the user's exit operation on the home camera, the camera function module actively sends a message to the close viewing reminder module Send the first notification message. The first notification message is used to inform the close viewing reminder module that the current camera has been released and returned to the idle state, so that the close viewing reminder module can re-call the camera to implement the close viewing reminder function.

It can be understood that S410 can also be represented as the close viewing reminder module receiving the first notification message from the camera function module.

In some embodiments, after executing S409 to release the camera, the camera function module may query whether the close viewing reminder function is turned on. After that, if it is found that the close viewing reminder function is turned on, the camera function module then executes S410, that is, sending the first notification message to the close viewing reminder module.

Among them, in some embodiments, the camera function module can directly interact with the close viewing reminder module to obtain whether the close viewing reminder function is turned on. Exemplarily, after executing S409 to release the camera, the camera function module sends a query request to the close viewing reminder module, then receives the response result returned by the close viewing reminder module, and determines whether the close viewing reminder function is turned on based on the response result. state.

In other embodiments, the close viewing reminder function is turned off, and the close viewing reminder module may not be able to receive the query request or respond to the query request. Therefore, in this embodiment, the camera function module can also send a query request to the close viewing reminder module after executing S409 to release the camera, and determine whether a response returned from the close viewing reminder module is received within the preset time period. message to determine whether the close viewing reminder feature is turned on. Further, if a response message returned by the close viewing reminder module is received within the preset time period, it means that the close viewing reminder function is on. If no response message returned by the close viewing reminder module is received within the preset time period, it means that the close viewing reminder module is in a closed state.

In addition to interacting with the close viewing reminder module to obtain the status of the close viewing reminder function, the smart screen can also set a logo to indicate whether the close viewing reminder function is turned on. For example, after the smart screen activates the close viewing reminder function, the smart screen can set this flag to 1 to indicate that the close viewing reminder function is on; after turning off the close viewing reminder function, the smart screen can set This flag is set to 0 to indicate that the close viewing reminder function is turned off. Further, after the camera function module performs S409 to release the camera, it can be determined whether the close viewing reminder function is turned on by querying the value of this identifier.

In the technical solution provided by the embodiment of the present application, after the camera function module releases the camera, if it detects that the close viewing reminder function is turned on, the camera function module sends a first notification message to the close viewing reminder module. In order to notify the close viewing reminder module that the camera has been released, the close viewing reminder module can re-call the camera as soon as possible to restore the close viewing reminder function.

It is understandable that the above-mentioned close viewing reminder module can also be replaced by other modules that use cameras to implement corresponding functions. That is, after the camera function module executes S409 home camera function module to release the camera, it queries whether there is a function that needs to be implemented using the camera in the enabled state. Then the camera function module responds to the camera release command and also sends the camera to the function module corresponding to the function. The first notification message is released.

In some embodiments, the camera function module in S410 above sends a first notification message to the close viewing reminder module. Specifically, after the camera is released, the camera function module may trigger sending the first notification message to the close viewing reminder module. Further, the above trigger sends a first notification message to the close viewing reminder module, which can be implemented by calling the camera release callback function after the camera is released. The registration process of the camera release callback function and the specific implementation process of the camera function module calling the camera release callback function after the camera is released can be referred to the detailed description of the following embodiments and will not be described again here.

S411. The close viewing reminder module sends a camera calling instruction to the camera function module based on the first notification message.

Since the first notification message indicates that the current camera has been released, after receiving the first notification message, the close viewing reminder module can re-call the camera to implement the close viewing reminder function. In the embodiment of the present application, after receiving the first notification message from the camera function module, the close viewing reminder module sends the camera calling instruction to the camera function module again. In some embodiments, in order to distinguish it from other camera calling instructions, the camera calling instruction sent by the close viewing reminder module in S411 may be named the second camera calling instruction.

S412. The camera function module responds to the camera calling instruction and allocates the camera to the close viewing reminder module.

It can be seen from the description of the above embodiment that in S409, the camera function module releases the camera in response to the camera release instruction of the home camera function module. Therefore, before the camera function module allocates the camera to the close viewing reminder module in S412, it needs to be reset first. Activate the camera before assigning it to the Close View Alert module.

S413. The close viewing reminder module controls the camera and transmits image data with the camera.

At this point, the close viewing reminder module has regained control and use of the camera. Afterwards, the close viewing reminder module can obtain the image collected by the camera through the camera function module, and analyze the image to determine whether it is necessary to remind the user of the viewing distance.

In the camera allocation method provided by the embodiment of the present application, on the premise that the close viewing reminder module uses the camera for close viewing reminder, if the camera is preempted for use by a functional module such as a home camera, the camera will be used after the functional module such as the home camera exits. When, the camera function module will send the first notification message to the close viewing reminder module. In this way, the close viewing reminder module can promptly sense that the camera is released. Afterwards, the close viewing reminder module can re-call the camera in time to continue to monitor and remind the user's viewing distance. Avoid the problem of being unable to restore the close viewing reminder in time when using the home camera function module and then exiting with the close viewing reminder turned on. At the same time, it can also avoid the problem of wasting CPU resources caused by the close viewing reminder module constantly polling and trying to open the camera while the home camera is in use, and improve the performance of the smart screen.

It can be known from the description of the above embodiments that the above S410 can be implemented by calling the camera release callback function. The camera release callback function is registered and generated by the close viewing reminder module. In some embodiments, the close view reminder module may register a camera release callback function immediately after startup. Please refer to Figure 5. After the smart screen detects the user's opening operation of the close viewing reminder function, the above method may also include S501:

S501. The close viewing reminder module registers the camera release callback function.

Among them, the camera release callback function can be used to call the camera release callback function after the camera is released, and is used to trigger sending the first notification message that the camera is released to the functional module registered with the camera release callback function.

In some embodiments, after the close viewing reminder module registers the camera release callback function, the smart screen can add a registration record of the close viewing reminder module for the camera release callback function. Later, after the camera is released by other functional modules, the camera service module can trigger the call of the camera release callback function, and based on the registration record, send a notification message to the functional module that has registered the camera release callback function. That is to say, in the embodiment of this application, after the close viewing reminder module registers the camera release callback function, if the camera is released by other functional modules, the camera function module will trigger the call of the camera release callback function. According to the registration record, it can be determined that the close viewing reminder module has registered the camera release callback function. Therefore, calling the camera release callback function will send a notification message that the camera is released to the close viewing reminder module.

Further, in some embodiments, the above-mentioned close viewing reminder module registers a camera release callback function. Specifically, the close viewing reminder module registers a camera release callback function at the HAL layer.

Further, as shown in Figure 6, the above S501 may specifically include S501a and S501b:

S501a. The close viewing reminder module sends a registration request for the camera release callback function to the HIDL camera interface service module.

The HIDL camera interface service module is the camera interface service module (HIDL service camera proxy, hereinafter referred to as the HIDL camera interface service module) in the hardware abstraction layer interface definition language service. It is understandable that the above S501a can also be understood as the HIDL camera interface service module receiving the registration request for the camera release callback function sent by the close viewing reminder module.

S501b. In response to the registration request, the HIDL camera interface service module adds a registration record of the camera release callback function of the close viewing reminder module.

In the embodiment where the close viewing reminder module registers the camera release callback function, after the camera function module is released from the camera of other functional modules, the camera release callback function can be called to realize that the camera function module sends the third callback function to the close viewing reminder module. A notification message.

It should be noted that the above S501 may be executed after S401 and S402, or may be executed before S401 and S402, or S401 and S402 may be executed simultaneously with S501. In the embodiment of the present application, the order in which S401, S402 and S501 are executed is not explicitly limited.

Based on the above-mentioned S501 in the embodiment of this application, it can be seen that after the close viewing reminder module is started, the camera release callback function is registered. Therefore, after S409 releases the camera from the home camera function module, the camera function module can send the first notification message to the close viewing reminder module based on the registration record by calling the camera release callback function. Please continue to refer to Figure 5. The above S410 may specifically include S410a:

S410a. The camera function module triggers a call to the camera release callback function, and sends a first notification message to the close viewing reminder module based on the registration record.

In the embodiment where the close viewing reminder module registers the camera release callback function in the HIDL camera interface service module, please continue to refer to Figure 6. The above S410a may specifically include S601 and S602:

S601. The camera function module sends a second notification message to the HIDL camera interface service module.

The second notification message is used to notify the HIDL camera interface service module that the camera is released. Therefore, after receiving the second notification message, the HIDL camera interface service module can call the camera release callback function to send the first notification message to the close viewing reminder module based on the registration record.

In some embodiments, the above-mentioned S410a may be that the camera HAL module in the camera function module sends a second notification message to the HIDL camera interface service module.

S602. The HIDL camera interface service module responds to the second notification message, calls the camera release callback function, and sends the first notification message to the close viewing reminder module based on the registration record.

It can be seen from the description of the above embodiment that the second notification message is used to notify the HIDL camera interface service module that the camera is released. Therefore, after receiving the second notification message, the HIDL camera interface service module can call the camera release callback function to trigger the The close viewing reminder module sends the first notification message.

In some embodiments, for the camera function module, before the camera is released, it may not be clear whether any function module has registered the camera release callback function, or which functional modules have registered the camera release callback function. Therefore, before the camera function module sends the second notification message to the HIDL camera interface service module, the camera function module can first query in the registration record which functional modules have registered the camera release callback function. Afterwards, after the camera is released, the camera function module can send the first notification message to this part of the function module that has registered the camera release callback function. In the embodiment of this application, the close viewing reminder module registers the camera release callback function after startup. Therefore, in this embodiment, the camera function module can send a second notification message to the HIDL camera interface service module to enable the HIDL camera The interface service module sends the first notification message to the close viewing reminder module.

Specifically, in some embodiments, after releasing the camera from the home camera function module, the camera function module can query the HIDL camera interface service module which functional modules have registered the camera release callback function.

In the embodiment of this application, after the close viewing reminder module is started, the camera release callback function is registered. The camera function module can call the camera release callback function after the camera is released. After the camera release callback function is called, the first notification message can be triggered to be sent to the close viewing reminder module, so that the close viewing reminder module can promptly perceive the news that the camera has been released, so that the close viewing reminder module can promptly re-call the camera. to restore the close viewing reminder function.

Based on the description of the above embodiment, it can be seen that if the camera is in an idle state when the close viewing reminder function is activated, the camera will be assigned to the close viewing reminder module, that is, S403 and S404 shown in Figure 4C. After that, when the home camera is started, it will seize the control and use rights of the camera, causing the close viewing reminder module to be temporarily interrupted. Therefore, in some embodiments, the close viewing reminder module can register the camera release callback function when the camera is preempted. This can also ensure that when the home camera function module exits the use of the camera, it can call the camera release callback function to notify the close range user. Watch the message that reminds the module camera to be released. This ensures that the close viewing reminder module can promptly re-call the camera and restore the close viewing reminder function.

As can be seen from the description of the above embodiments, the process in which the close viewing reminder module seizes the control rights and usage rights of the camera by the home camera function module may specifically include releasing the camera from the close viewing reminder module, and then assigning the camera to the home camera function module. Home camera function module. As shown in Figure 7, S406 may specifically include S406a-S406c:

S406a. The camera function module responds to the camera calling instruction and sends the third control instruction to the close viewing reminder module.

S406b. In response to the third control instruction, the close viewing reminder module releases the camera.

At the same time, after the close viewing function module releases the camera, the close viewing reminder module can register the camera release callback function, as shown in S701 in Figure 7:

S701. The close viewing reminder module registers the camera release callback function.

It should be noted that the above S701 may be executed before S406b, or may be executed after S406b, or S701 and S406b may be executed at the same time. In the embodiment of the present application, the execution order of S701 and S406b is not limited.

S406c. The camera function module assigns the camera to the home camera function module.

It can be understood that in the embodiment shown in Figure 7, the camera function module can send a first notification message to the close viewing reminder module by triggering the call of the camera release callback function when the home camera exits the use of the camera.

In the technical solution provided by the embodiment of the present application, when the close viewing reminder module is started, if the camera is in an idle state, the control and use rights of the camera can be obtained immediately. After that, the camera is assigned to other functional modules such as home cameras, and the camera of the close viewing reminder module is preempted, and the close viewing reminder function will be temporarily interrupted. At this time, when the close viewing reminder module releases the camera, it can register the camera release callback function, so that the camera function module can call the camera release callback function to notify the close viewing reminder module of the camera after other functional modules quit using the camera. News of being released. This can also ensure that the close viewing reminder module can promptly re-call the camera and restore the close viewing reminder function in a timely manner.

In addition, in the embodiment in which the camera function module sends the first notification message to the close viewing reminder module by triggering the camera release callback function, if the camera has been assigned to other functional modules (such as the third Function module, etc.), and the priority of the close viewing reminder module for the use of the camera is lower than the priority of the third functional module for the use of the camera. In response to the opening operation of the close viewing reminder function, the close viewing reminder function can be started first, but because the camera is occupied by other functional modules, the close viewing reminder function cannot be implemented normally at this time.

In order to when the third function module exits the use of the camera, the close viewing reminder module can promptly call the camera to implement the close viewing reminder function. Although the camera cannot be used, the close viewing reminder module can first register the camera release callback function. In this way, when the third function module quits using the camera, the camera function module can also trigger and call the camera release callback function in time, and send the first notification message to the close viewing reminder module based on the registration record. After receiving the first notification message, the close viewing reminder module can promptly call the camera to implement the close viewing reminder function.

In some embodiments, the third functional module may be a video call or other related functional module. It is understandable that the third functional module can also be replaced by the above-mentioned home camera functional module.

In some embodiments, as shown in Figure 8, a schematic diagram of the software architecture of a smart screen provided by an embodiment of the present application is shown, which shows the functional modules related to the camera allocation method proposed by the embodiment of the present application, as well as each functional module. data flow between.

In the embodiment shown in Figure 8, the above-mentioned camera function module can be specifically divided into: a camera service module located at the application framework layer, and a camera hardware abstraction module located at the hardware abstraction layer.

Combined with the functional modules shown in Figure 8, the complete process of the camera allocation method provided by the embodiment of the present application is described below. Please refer to Figure 9. In this embodiment, the close viewing reminder module is a function of the child mode application (APK), and the family camera function is a family camera application.

First, the user turns on the child mode of the smart screen. Afterwards, the child mode determines whether the close viewing reminder function is turned on. After detecting that the child mode has turned on the close viewing reminder function, the child mode registers the camera release callback function in the HIDL servicecamera proxy. Moreover, the child mode starts the camera (camera HAL) through the camera server module. Afterwards, the child mode obtains image data through the camera HAL, analyzes the image data to monitor the user's viewing distance, and alerts the user when it detects that the viewing distance is too close.

Then, the user opens the home camera of the smart screen. After the home camera is started, it will seize the control and use rights of the camera. At this time, the close viewing reminder function of children's mode will be temporarily interrupted.

Afterwards, the user turns off the home camera. During the process of closing the family camera, the family camera will release the camera through camera server control. After the camera is released, camera Half calls the camera release callback function from the HIDL service cameraproxy, triggering the first notification message to be sent to the child mode to notify the child mode that the camera has been released.

After receiving the first notification message, the child mode can re-read and call the camera through the camera server module, and obtain the images collected by the camera for analysis. Afterwards, the user's viewing distance can be continued to be monitored and reminded based on the results of image analysis.

Figure 10 is a schematic flowchart of a camera allocation method provided by an embodiment of the present application. In this embodiment, the user first turns on the child mode, and the child mode will obtain whether the close viewing reminder function is turned on in the saved record. If the close viewing reminder module is not turned on, the user can manually turn on the close viewing reminder function in the function setting interface of the child mode. After detecting that the close viewing reminder function is turned on, the close viewing reminder module can register the camera release callback function in the HIDLservice camera proxy.

After that, it can be determined that the camera release is available. If the camera is available when the child mode is turned on (or the close viewing reminder function is turned on), the camera can be directly assigned to the close viewing reminder module. Afterwards, the close viewing reminder module can obtain the image collected by the camera and analyze the image to determine the user's viewing distance. Also, the user is alerted when the image analysis determines that the user's viewing distance is too close.

If the camera is not available when child mode is turned on (or the close viewing reminder function is turned on), then you need to wait for the notification message that the camera is released by calling the camera release callback function sent by the HIDL service camera proxy. After determining that the notification message that the camera is released is received, the close viewing reminder module can call the camera, and the smart screen can also assign the camera to the close viewing reminder module. Afterwards, the close viewing reminder module can obtain the images collected by the camera for analysis, and monitor and remind the user's viewing distance based on the results of image analysis.

Among them, after the camera HAL detects that the camera is released, it will send a notification message to the HIDL service cameraproxy. After receiving the notification message, the HIDL service camera proxy will call the camera release callback function and send a notification message that the camera is released to the close viewing reminder module registered with the camera release callback function.

Furthermore, in the process of the close viewing reminder module acquiring images collected by the camera and monitoring and reminding the user of the user's close viewing distance based on the results of image analysis, the right to use the camera may be preempted by other functional modules. Because when the close viewing reminder function is turned on, the close viewing reminder module registers the camera release callback function. Therefore, after detecting that the camera is preempted, the close viewing reminder module can detect whether a notification message sent by the HIDLservice camera proxy that the camera is released is received. And after receiving the notification message that the camera is released, the camera is called again to obtain the images collected by the camera and restore the close viewing reminder function.

Other embodiments of the present application provide a computer device, which may be the above-mentioned electronic device (such as smart screen 1). The computer device may include memory and one or more processors. The memory is coupled to the processor. The memory is also used to store computer program code, which includes computer instructions. When the processor executes computer instructions, the computer device can perform each function or step performed by the smart screen 1 in the above method embodiment. When the computer device is an electronic device, its structure may refer to the structure of the electronic device 100 shown in FIG. 2A .

An embodiment of the present application also provides a chip system. As shown in FIG. 11 , the chip system 1100 includes at least one processor 1101 and at least one interface circuit 1102 . The processor 1101 and the interface circuit 1102 may be interconnected by wires. For example, interface circuitry 1102 may be used to receive signals from other devices, such as the memory of a computer device. As another example, interface circuit 1102 may be used to send signals to other devices (eg, processor 1101). For example, the interface circuit 1102 can read instructions stored in the memory and send the instructions to the processor 1101. When the instructions are executed by the processor 1101, the computer device can be caused to perform various steps in the above embodiments. Of course, the chip system may also include other discrete devices, which are not specifically limited in the embodiments of this application.

Embodiments of the present application also provide a computer-readable storage medium. The computer-readable storage medium includes computer instructions. When the computer instructions are run on the above-mentioned electronic device (such as smart screen 1), the electronic device executes the above-mentioned method embodiment. Each function or step performed by the smart screen 1.

Embodiments of the present application also provide a computer program product. When the computer program product is run on a computer, it causes the computer to perform each function or step performed by the smart screen 1 in the above method embodiment. The computer may be an electronic device, such as a smart screen 1.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In practical applications, the above functions can be allocated according to needs. Different functional modules are completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined or can be integrated into another device, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separate. A component shown as a unit may be one physical unit or multiple physical units, that is, it may be located in one place, or it may be distributed to multiple different places. Some or all of the units can 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 application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

Integrated units may be stored in a readable storage medium if they are implemented in the form of software functional units and sold or used as independent products. Based on this understanding, the technical solutions of the embodiments of the present application are essentially or contribute to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium , including several instructions to cause a device (which can be a microcontroller, a chip, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes.

The above contents are only specific implementation modes of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be covered by the protection scope of the present application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (10)

1. A camera allocation method, characterized in that the method is applied to electronic equipment, the electronic equipment includes a camera, and a first functional module and a second functional module that support the use of the camera to implement corresponding functions; The first function corresponding to the first functional module is in an enabled state, and the camera is currently assigned to the second functional module; the method includes: Obtain the first operation for the second functional module; In response to the first operation, the camera is released from the second functional module and assigned to the first functional module. 2. The method of claim 1, wherein the electronic device further includes a camera function module, and in response to the first operation, the camera is released from the second function module and the The camera is assigned to the first functional module, including: The camera function module responds to the first operation, releases the camera from the second function module, and triggers a notification message that the camera is released to be sent to the first function module; The first functional module sends a first camera calling instruction to the camera functional module based on the notification message; In response to the first camera calling instruction, the camera function module assigns the camera to the first function module. 3. The method according to claim 1 or 2, characterized in that, before obtaining the first operation for the second functional module, the method further includes: Obtain the second operation for the second functional module; In response to the second operation, the camera is assigned to the second functional module. 4. The method according to claim 3, characterized in that, before obtaining the second operation for the second functional module, the method further includes: Obtain the third operation for the first functional module; In response to the third operation, starting the first function and assigning the camera to the first functional module; Wherein, in response to the second operation, assigning the camera to the second functional module includes: In response to the second operation, the camera is released from the first functional module and assigned to the second functional module. 5. The method according to claim 4, wherein the electronic device further includes a camera function module, and after obtaining the third operation for the first function module, the method further includes: The first functional module initiates a first registration request to register the camera release callback function; In response to the first registration request, add the registration record of the camera release callback function by the first functional module; the registration record is used by the camera function module when removing the camera from the second functional module After the release, the camera release callback function is triggered to be called, and a notification message that the camera is released is sent to the first functional module based on the registration record. 6. The method of claim 4, wherein the electronic device further includes a camera function module, and after the camera is released from the first function module in response to the second operation, The method also includes: The first functional module initiates a second registration request to register the camera release callback function; In response to the second registration request, add the registration record of the camera release callback function by the first functional module; the registration record is used by the camera function module when removing the camera from the second functional module After the release, the camera release callback function is triggered to be called, and a notification message that the camera is released is sent to the first functional module based on the registration record. 7. The method of claim 3, wherein the electronic device further includes a camera function module, and after the camera is assigned to the second function module in response to the second operation, The method also includes: Obtain the fourth operation for the first functional module; In response to the fourth operation, starting the first function; The first functional module initiates a third registration request to register the camera release callback function; In response to the third registration request, add the registration record of the camera release callback function by the first functional module; the registration record is used by the camera function module when removing the camera from the second functional module After the release, the camera release callback function is triggered to be called, and a notification message that the camera is released is sent to the first functional module based on the registration record. 8. The method according to any one of claims 1 to 7, characterized in that the first functional module includes a close viewing reminder module; after the camera is assigned to the first functional module , the method also includes: The close viewing reminder module obtains the image collected by the camera; The close viewing reminder module analyzes the image, and reminds the user of the viewing distance based on the results obtained from analyzing the image. 9. An electronic device, characterized in that the electronic device includes: a processor, a memory and a camera; the memory and the camera are respectively coupled to the processor; The camera is used to collect images; computer program code is stored in the memory, and the computer program code includes computer instructions. When the computer instructions are executed by the processor, the electronic device performs the steps of claim 1 The method described in any one of -8. 10. A computer-readable storage medium, characterized by comprising computer instructions that, when the computer instructions are run on an electronic device, cause the electronic device to perform the method according to any one of claims 1-8 .