CN103024272A - Dual-camera control device, method, system and mobile terminal for mobile terminal - Google Patents

Abstract

The present invention is applicable to camera control technology, and provides a dual-camera control device for a mobile terminal, wherein the mobile terminal includes a first camera, a second camera, a power supply unit, and a control chip, wherein the power supply unit supplies power to the first camera and the second camera separately, and the control chip communicates with the first camera and the second camera separately. The dual-camera control device of the mobile terminal independently supplies power to and communicates with the two cameras, thereby avoiding mutual interference in the control between the two cameras. In addition to being able to choose to turn on a single camera, the user can also turn on two cameras at the same time for preview and recording, and can also synthesize the photos of the dual cameras after taking pictures, thereby greatly improving the user's photo-taking experience.

Description

Dual-camera control device, method, system and mobile terminal for mobile terminal

technical field

The invention belongs to camera control technology, and in particular relates to a dual camera control method and system for a mobile terminal and a mobile terminal.

Background technique

At present, many mobile terminals are equipped with a front camera and a rear camera, and the two cameras can only be used independently, that is, the front camera cannot be turned on at the same time when the rear camera is used, and the rear camera cannot be turned on at the same time when the front camera is used , which reduces the user's camera experience, having two cameras can only be used independently.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method for controlling dual cameras of a mobile terminal, aiming at solving the problem that the two cameras can only be used independently and the user experience is not good.

The embodiment of the present invention is realized in this way, a dual-camera control device for a mobile terminal, the mobile terminal includes a first camera, a second camera, a power supply unit, a control chip, and a display, and the power supply unit is respectively the first The camera and the second camera are powered independently, and the control chip communicates with the first camera and the second camera separately.

Another object of the embodiments of the present invention is to provide a method for controlling a dual-camera control device based on the above-mentioned mobile terminal, wherein the mobile terminal includes a first camera and a second camera, and the dual-camera control method for the mobile terminal includes the following steps :

If the command to select dual cameras for shooting is obtained, simultaneously start the first camera and the second camera to find a view and display the view respectively on the display;

adjusting and recording the viewfinder to generate an image, and generating a selection key for selecting to combine the images;

If the command to synthesize the images is received, the images are synthesized and stored.

Another object of the embodiments of the present invention is to provide a dual-camera control system for a mobile terminal. The mobile terminal includes a first camera, a second camera, a control chip, a power supply unit, and a display. A camera and a second camera are powered separately, and the control chip communicates with the first camera and the second camera separately, and the control chip includes:

The preview unit is used to start the first camera and the second camera to find a view at the same time and display the view on the display respectively if the order to select the dual-camera shooting is obtained;

A recording unit, configured to adjust and record the image generated by the framing, and generate a selection key for selecting to combine the images;

The compositing unit is configured to composite the images and store them if the command to composite the images is received.

Another object of the embodiments of the present invention is to provide a mobile terminal, which includes the above-mentioned dual-camera control device for a mobile terminal

The dual-camera control device of the above-mentioned mobile terminal uses independent power supply and communication for the two cameras, which avoids mutual interference between the controls of the two cameras. The user can not only choose to turn on a single camera, but also turn on two cameras at the same time. Simultaneous preview and recording, and after taking a photo, the photos of the dual cameras can also be synthesized, so that the user's photo experience is greatly improved.

Description of drawings

Fig. 1 is a module block diagram of a dual camera control device of a mobile terminal provided by an embodiment of the present invention;

Fig. 2 is a working flowchart of a dual camera control method of a mobile terminal provided by an embodiment of the present invention;

Fig. 3 is a working flowchart of a dual camera control method of a mobile terminal provided by another embodiment of the present invention;

Fig. 4 is a work flow chart of capturing and recording images provided by an embodiment of the present invention;

Fig. 5 is a module block diagram of a dual camera control system of a mobile terminal provided by an embodiment of the present invention;

Fig. 6 is a module block diagram of a preview unit provided by an embodiment of the present invention;

Fig. 7 is a module block diagram of a recording unit provided by an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in FIG. 1 , a dual-camera control device for a mobile terminal, the mobile terminal includes a first camera 100, a second camera 200, a control chip 300, a power supply unit 400 and a display 500, and the power supply unit 400 is respectively The first camera 100 and the second camera 200 are powered separately, and the control chip 300 communicates with the first camera 100 and the second camera 200 separately.

The dual-camera control device of the above-mentioned mobile terminal uses independent power supply and communication for the two cameras, which avoids mutual interference between the controls of the two cameras. The user can not only choose to turn on a single camera, but also turn on two cameras at the same time. Simultaneous preview and recording, and after taking a photo, the photos of the dual cameras can also be synthesized, so that the user's photo experience is greatly improved.

In a preferred embodiment, the model of the control chip 300 is MT6577 (or other mobile phone dual-core or quad-core chips), and the control chip 300 includes two I2C bus interfaces (1 and 2), two serial port interfaces (3 and 4), Two clock interfaces (5 and 6), two synchronization interfaces (7 and 8), and two reset interfaces (9 and 10).

Two I2C bus interfaces (1 and 2) are independently connected to the first camera 100 and the second camera 200 through two sets of independent I2C (Inter-Integrated Circuit, two-wire serial bus) buses. Independently connect to the first camera and the second camera through two sets of independent serial communication buses, two independent sets of MIPI communication buses, or a combination of a set of serial communication buses and a set of MIPI buses;

The power supply unit 400 supplies power separately for the first camera 100 and the second camera 200 respectively, the control chip 300 is connected to the first camera 100 and the second camera 200 respectively, and the two serial ports of the control chip 300 Interfaces (3 and 4) are connected to all of The first camera 100 and the second camera 200 are connected.

The two clock interfaces (5 and 6), the two synchronization interfaces (7 and 8) and the two reset interfaces (9 and 10) of the control chip 300 respectively use independent source clock signals, synchronization signals and reset signals to communicate with the The first camera 100 and the second camera 200 communicate independently.

The power supply unit 400 supplies power to the two cameras separately to prevent power supply interference between the two cameras; use two sets of I2C buses for addressing to prevent the I2C bus addressing conflicts of the two cameras; use two sets of source clocks for different cameras Generate its own clock; when the two cameras use serial communication or MIPI communication, the data line and the synchronization signal line must be divided into two lines to ensure that the two cameras transmit data at the same time; the power supply, I2C addressing, and source clock are divided into two The roads are respectively provided to the two cameras to ensure that the two cameras can work independently and meet the requirements for the simultaneous use of the two cameras.

In addition, a control method based on the dual-camera control of the above-mentioned mobile terminal is also provided. As shown in FIG. The camera 100, the second camera 200, the control chip 300, the power supply unit 400 and the display 500, the power supply unit 400 supplies power for the first camera 100 and the second camera 200 separately, and the control chip 300 is connected with the first camera 200 respectively. The first camera 100 communicates with the second camera 200 independently, and the dual-camera control method of the mobile terminal includes the following steps:

Step S110 , if the command to select dual-camera shooting is acquired, simultaneously start the first camera 100 and the second camera 200 to take pictures and display the pictures on the display 500 respectively. Specifically, the mobile terminal provides an operation interface for receiving a start signal for starting the dual-camera recording mode, and judges whether the selection interface has received an order for dual-camera recording. If so, the mobile terminal will simultaneously start the first camera 100 and the second camera 100. The second camera 200 acquires the scene it faces, and displays the views of the two cameras (the first camera 100 and the second camera 200 ) on the display 500 , that is, provides the user with a preview of the camera recording. And this preview can display the views of the two cameras on the display 500 at the same time in a split-screen display mode. Of course, it can also be based on the operation instructions to realize the alternate display of the views of the two cameras on the display 500. In this embodiment, the display 500 is a touch display. No action (end) if the command of dual camera recording is not received.

Step S120, adjust and record the framing to generate an image, and generate a selection key for selecting to combine the images. Specifically, according to the user's operation instruction, the viewfinder parameters of the two cameras can be adjusted, such as focus adjustment, exposure adjustment, viewfinder size adjustment, and the like. The image generated by shooting the viewfinder is specifically, the viewfinder of the two cameras can be taken at the same time to take a picture or video, which is divided into a first image and a second image, or the viewfinder of the two cameras can be taken separately to take a picture or video, that is, first After completing the recording of the first image, the recording of the second image is performed, or vice versa.

The selection control key for selecting to synthesize the images is specifically used to receive an operation instruction for personalized synthesis of two pictures or videos, specifically, it may be to synthesize the first image into the second image, or to synthesize the second image into the second image. The operation instruction for compositing the image into the first image may also be an operation instruction such as sharpening, removing red eyes, and adding a background to the composited image. In this embodiment, the selection control key or selection interface is a virtual key displayed on the display 500 or an operation interface that receives a sliding operation track on the display 500 .

Step S130, if a command to combine the images is received, combine the images and store them. Specifically, before receiving the command to synthesize the images, an operation instruction of personalized setting is also received, and the mobile terminal performs personalized settings on the image to be synthesized, and the personalized setting operation instruction may specifically be to combine the first image Instructions for compositing into the second image, or compositing the second image into the first image, may also be operation instructions for the composited image such as sharpening, removing red eyes, adding background, etc., and finally receiving the command to composite the images After that, the personalized first image and the second image are synthesized and saved.

The above-mentioned control method based on the dual-camera control of the above-mentioned mobile terminal provides independent power supply and communication for the two cameras, avoiding mutual interference between the controls of the two cameras. The two cameras preview and record at the same time, and after taking pictures, the photos of the dual cameras can be synthesized, so that the user's photo experience is greatly improved.

Please refer to FIG. 3 , in a more detailed embodiment, the dual camera control method of the mobile terminal further includes step S105 before step S110, receiving a command to start the camera and generating a selection key for selecting a shooting mode. Specifically, after the mobile terminal receives an operation instruction from the user to start the camera, it generates a selection key for selecting a shooting mode. The selection key includes a single-camera shooting mode key and a dual-camera shooting mode key. If the dual-camera shooting mode control key receives the operation signal, then start the dual-camera shooting mode and enter step S110; if the single-camera shooting mode control key receives the operation signal, then generate and provide options to start the first camera 100 or the second camera 200 operation interface, or first start the mobile terminal to preset the default camera by default and then generate an operation interface that provides camera switching.

Please refer to FIG. 4 , in a more detailed embodiment, step S120 includes step S121 , step S122 and step S123 . details as follows:

Step S121, acquiring a command to adjust the framing, and adjusting the framing parameters of the framing. Specifically, after the mobile terminal enters the preview mode, that is, the above-mentioned framing, an interface for receiving and adjusting the framing (virtual buttons or judgment on the sliding operation track of the display 500) is generated, and according to the user's operation instructions, the framing of the two cameras can be adjusted. Perform parameter adjustment, for example, focus adjustment, exposure adjustment, viewfinder size adjustment, etc.

Step S122 , acquiring a command to record the adjusted view, and recording the views of the first camera 100 and the second camera 200 separately or simultaneously. Specifically, after receiving the recording operation signal, the mobile terminal will control the viewfinder of the first camera 100 and the viewfinder of the second camera 200 to generate an image. Specifically, the mobile terminal will provide two camera positions on the touch screen or physical buttons. The operation interface for shooting and recording at the same time also provides the operation interface for shooting and recording the view of the first camera 100 and the operation interface for shooting and recording the view of the second camera 200, so that simultaneous shooting and separate shooting can be realized.

Step S123 , generating a selection key for selecting to combine the images and a selection key for selecting to save the images captured by the first camera 100 and the second camera 200 respectively. Before receiving the command for synthesizing the images, an operation instruction for personalized setting is also received, and the mobile terminal performs personalized settings for the image to be synthesized. The personalized setting operation instruction can be specifically to synthesize the first image into the second image Instructions for compositing the second image into the first image, or for compositing the second image into the first image, may also be operational instructions such as sharpening, removing red eyes, and adding a background to the composited image. Finally, after receiving the command for compositing the images, the The personalized first image and the second image are synthesized and saved.

In addition, it also provides selection keys for saving the images captured by the first camera 100 and the second camera 200 respectively when the images are not to be synthesized.

In the above embodiments, the selection key or selection interface is an operation interface generated by the mobile terminal system on the touch display 500 for receiving user operation instructions, and may also be a physical button on the mobile terminal.

The above-mentioned control method based on the dual-camera control of the above-mentioned mobile terminal provides independent power supply and communication for the two cameras, avoiding mutual interference between the controls of the two cameras. The two cameras preview and record at the same time, and after taking pictures, the photos of the dual cameras can be synthesized, so that the user's photo experience is greatly improved.

In addition, with reference to FIG. 1 and FIG. 5 , a dual camera control system for a mobile terminal is also provided, the mobile terminal includes a first camera 100, a second camera 200, a control chip 300, a power supply unit 400 and a display 500, the The power supply unit 400 separately supplies power for the first camera 100 and the second camera 200, the control chip 300 communicates with the first camera 100 and the second camera 200 separately, and the control chip 300 includes a preview unit 410, A recording unit 420 and a synthesis unit 430 .

The preview unit 410 is used to start the first camera 100 and the second camera 200 to view the view and display the view respectively on the display 500 if the order to select the dual-camera recording is acquired; the recording unit 420 is used to adjust and Recording the image generated by the framing, and generating a selection key for selecting to combine the images; the combining unit 430 is configured to combine the images and store them after receiving a command to combine the images.

The dual-camera control system of the above-mentioned mobile terminal uses independent power supply and communication for the two cameras, which avoids mutual interference between the controls of the two cameras. In addition to choosing to turn on a single camera, the user can also use the preview unit 410 and the camera. The recording unit 420 simultaneously enables the simultaneous preview and recording of the two cameras, and after the photo is taken, the photos of the dual cameras can be synthesized by the synthesizing unit 430, so that the user's photo experience is well improved.

Specifically, the preview unit 410 is configured to simultaneously start the first camera 100 and the second camera 200 to take a view and display the view on the display 500 respectively if an order for selecting dual-camera shooting is obtained. In this embodiment, The control chip 300 provides an operation interface for receiving an activation signal for starting the dual-camera recording mode. If the selection interface receives an order for dual-camera recording, the mobile terminal will simultaneously activate the first camera 100 and the second camera 200 to obtain their The corresponding scene is displayed on the display 500 with the views of the two cameras (the first camera 100 and the second camera 200 ), that is, to provide the user with a preview of the camera recordings.

As shown in FIG. 6 , the preview unit 410 starts to include a split-screen display module 412 and an alternate display module 414 .

The split-screen display module 412 is used for simultaneously starting the viewfinder of the first camera 100 and the second camera 200 and displaying the viewfinder on the display 500 in a split screen, that is, the viewfinder of the two cameras is simultaneously displayed in a split-screen manner on the display 500 Display; the alternate display module 414 is used to simultaneously start the framing of the first camera 100 and the second camera 200 and alternately display the framing on the display 500, that is, it can also realize the framing of the two cameras on the display according to the operation instruction 500 is alternately displayed. In this embodiment, the display 500 is a touch display.

The recording unit 420 is configured to adjust and record the framing to generate an image, and generate a selection key for selecting to combine the images. According to the user's operation instruction, the viewfinder parameters of the two cameras can be adjusted, such as focus adjustment, exposure adjustment, viewfinder size adjustment, and the like. The image generated by shooting the viewfinder is specifically, the viewfinder of the two cameras can be taken at the same time to take a picture or video, which is divided into a first image and a second image, or the viewfinder of the two cameras can be taken separately to take a picture or video, that is, first After completing the recording of the first image, the recording of the second image is performed, or vice versa.

The selection control key for selecting to synthesize the images is specifically used to receive an operation instruction for personalized synthesis of two pictures or videos, specifically, it may be to synthesize the first image into the second image, or to synthesize the second image into the second image. The operation instruction for compositing the image into the first image may also be an operation instruction such as sharpening, removing red eyes, and adding a background to the composited image. In this embodiment, the selection control key or selection interface is a virtual key displayed on the display 500 or an operation interface that receives a sliding operation track on the display 500 .

The compositing unit 430 is configured to composite the images and store them if receiving the command to composite the images. In this embodiment, before receiving the command for synthesizing the images, an operation instruction for personalized setting is also received, and the mobile terminal performs personalized settings for the image to be synthesized. The personalized setting operation instruction can be specifically the first An operation command to synthesize an image into a second image, or to synthesize a second image into a first image, may also be an operation command such as sharpening, removing red eyes, and adding a background to the synthesized image. After the command, the synthesis unit 430 synthesizes and saves the personalized first image and the second image.

In a preferred embodiment, the dual-camera control system of the mobile terminal further includes a starting unit 440, and the starting unit 440 is used to receive a command to start the camera and generate a selection key for selecting a shooting mode. Specifically, after the activation unit 440 of the mobile terminal receives the user's operation instruction to start the camera, it generates selection keys for selecting a shooting mode. The selection keys include a single-camera shooting mode key and a dual-camera shooting mode key. If the dual-camera shooting mode control key receives the operation signal, then start the dual-camera shooting mode, and the system enters the preview unit 410 to perform work; The operation interface of the second camera 200, or first start the mobile terminal to preset the default camera by default, and then generate the operation interface for providing camera switching.

In a preferred embodiment, as shown in FIG. 7 , the shooting and recording unit 420 includes a viewfinder adjustment module 422 , a viewfinder recording module 424 and a composition selection module 426 .

The viewfinder adjustment module 422 is configured to obtain an order to adjust the viewfinder, and adjust the viewfinder parameters of the viewfinder. In this embodiment, after the system enters the preview mode, that is, the above-mentioned viewfinder, the viewfinder adjustment module 422 generates a receiving adjustment viewfinder The interface (virtual buttons or judgment of the sliding operation trajectory of the display 500), according to the user's operation instructions, can adjust the parameters of the viewfinder of the two cameras, such as focus adjustment, exposure adjustment, viewfinder size adjustment, etc.

The framing and recording module 424 is configured to obtain an order to record the adjusted framing, and record the framing of the first camera 100 and the second camera 200 separately or simultaneously. In this implementation, after receiving the shooting and recording operation signal, the framing and recording module 424 will control the framing of the first camera 100 and the framing of the second camera 200 to generate an image. Or the physical button provides an operation interface for two cameras to shoot and record at the same time, and also provides an operation interface for taking pictures of the first camera 100 and an operation interface for taking pictures of the second camera 200, so that simultaneous shooting and separate shooting can be realized.

The synthesis selection module 426 is used to generate a selection key for selecting to combine the images and a selection key for selecting to save the images captured by the first camera 100 and the second camera 200 respectively. Before receiving the command to synthesize the images, an operation instruction of personalized setting is also received, and the synthesis selection module 426 performs personalized settings on the images to be synthesized, and the personalized setting operation instruction may specifically be to synthesize the first image Into the second image, or the operation instructions of combining the second image into the first image can also be operation instructions such as sharpening, red-eye removal, and background addition for the synthesized image, and finally after receiving the command to synthesize the image to combine and save the personalized first image and the second image.

In addition, a selection control key is also provided for separately saving the images captured by the first camera 100 and the second camera 200 when the images are not to be combined.

In a preferred embodiment, the control chip includes two I2C bus interfaces (1 and 2), two serial interfaces (3 and 4), two clock interfaces (5 and 6), two synchronous interfaces (7 and 8) and two reset interfaces (9 and 10).

Two I2C bus interfaces (1 and 2) are independently connected to the first camera 100 and the second camera 200 through two sets of independent I2C (Inter-Integrated Circuit, two-wire serial bus) buses. (3 and 4) Independently connect to the first camera 100 and the second camera 200 through two sets of independent serial communication buses, two independent sets of MIPI communication buses, or a combination of a set of serial communication buses and a set of MIPI buses;

The power supply unit 400 supplies power separately for the first camera 100 and the second camera 200 respectively, the control chip 300 is connected to the first camera 100 and the second camera 200 respectively, and the two serial ports of the control chip 300 Interfaces (3 and 4) are connected to all of The first camera 100 and the second camera 200 are connected.

The two clock interfaces (5 and 6), the two synchronization interfaces (7 and 8) and the two reset interfaces (9 and 10) of the control chip 300 respectively use independent source clock signals, synchronization signals and reset signals to communicate with the The first camera 100 and the second camera 200 communicate independently.

The power supply unit 400 supplies power to the two cameras separately to prevent power supply interference between the two cameras; use two sets of I2C buses for addressing to prevent the I2C bus addressing conflicts of the two cameras; use two sets of source clocks for different cameras Generate its own clock; when the two cameras use serial communication or MIPI communication, the data line and the synchronization signal line must be divided into two lines to ensure that the two cameras transmit data at the same time; the power supply, I2C addressing, and source clock are divided into two The roads are respectively provided to the two cameras to ensure that the two cameras can work independently and meet the requirements for the simultaneous use of the two cameras.

In addition, a mobile terminal is also provided, which includes the above-mentioned dual-camera control device for the mobile terminal. The structure and functional principles of the dual-camera control device for the mobile terminal are as described above, and will not be repeated here.

The above-mentioned mobile terminal uses independent power supply and communication for the two cameras, which avoids mutual interference between the control of the two cameras. In addition to choosing to turn on a single camera, the user can also turn on the preview and recording of the two cameras at the same time. , and the photos from the dual cameras can also be synthesized after taking a photo, so that the user's photo experience is greatly improved.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (12)

1. A dual-camera control device for a mobile terminal, the mobile terminal comprising a first camera, a second camera, a power supply unit and a control chip, wherein the power supply unit is respectively the first camera and the second camera Separately powered, the control chip communicates with the first camera and the second camera separately. 2. the dual camera control device of mobile terminal as claimed in claim 1, is characterized in that, described control chip comprises two I2C bus interfaces, two serial port interfaces, two clock interfaces, two synchronous interfaces and two reset interface, where The two I2C bus interfaces are independently connected to the first camera and the second camera, and the two serial ports are connected through two sets of independent serial communication buses, two independent MIPI communication buses, or a set of serial communication buses and The combination of a group of MIPI buses is independently connected to the first camera and the second camera; The two clock interfaces, the two synchronization interfaces and the two reset interfaces use independent source clock signals, synchronization signals and reset signals to communicate independently with the first camera and the second camera respectively. 3. A control method based on the dual-camera control device of the mobile terminal as claimed in claim 1 or 2, wherein the dual-camera control method of the mobile terminal comprises the following steps: If the command to select dual cameras for shooting is obtained, simultaneously start the first camera and the second camera to find a view and display the view respectively on the display; adjusting and recording the viewfinder to generate an image, and generating a selection key for selecting to combine the images; If the command to synthesize the images is received, the images are synthesized and stored. 4. The control method according to claim 3, characterized in that, when acquiring an order for selecting dual-camera shooting, simultaneously start the first camera and the second camera to find a view and display the view-finding on the display respectively. The specific steps are: The acquisition of the command to select the dual-camera shooting will simultaneously start the first camera and the second camera to view the view and display the view in split screens or alternately display the view on the display. 5. The control method according to claim 3 or 4, characterized in that, when acquiring the command to select the dual-camera recording, simultaneously start the first camera and the second camera to find a view and display them on the display respectively. Before the step of framing, it also includes: a step of receiving a command to start the camera and generating a selection key for selecting a shooting mode. 6. The control method according to claim 3, wherein the step of adjusting and recording the viewfinder to generate an image, and generating a selection control key for selecting to combine the images is specifically as follows: Obtain a command for adjusting the framing, and adjust the framing parameters of the framing; Obtaining an order to record the adjusted framing, and recording the framing of the first camera and the second camera separately or simultaneously; A selection control key for selecting to combine the images and a selection control key for selecting to save the images captured by the first camera and the second camera respectively are generated. 7. A dual-camera control system for a mobile terminal, the mobile terminal comprising a first camera, a second camera, a control chip, a power supply unit and a display, wherein the power supply unit is respectively the first camera and the second camera The two cameras are powered separately, and the control chip communicates with the first camera and the second camera separately, and the control chip includes: The preview unit is used to start the first camera and the second camera to find a view at the same time and display the view on the display respectively if the order to select the dual-camera shooting is obtained; A recording unit, configured to adjust and record the image generated by the framing, and generate a selection key for selecting to combine the images; The compositing unit is configured to composite the images and store them if the command to composite the images is received. 8. the dual camera control system of mobile terminal as claimed in claim 7, is characterized in that, described preview unit comprises: A split-screen display module, configured to start simultaneously the first camera and the second camera to find a view and display the view on a split screen of the display; The alternate display module is used for simultaneously starting the first camera and the second camera to take pictures and alternately displaying the pictures on the display. 9. The dual camera control system of mobile terminal as claimed in claim 7 or 8, is characterized in that, described system also comprises starting unit, is used for receiving the order of starting camera and generates the step of the selection control key that is used to select shooting mode . 10. The dual-camera control system of the mobile terminal according to claim 7, wherein the recording unit comprises: A framing adjustment module, configured to obtain a command to adjust the framing, and adjust the framing parameters of the framing; The framing and recording module is used to obtain an order for recording the adjusted framing, and record the framing of the first camera and the second camera separately or simultaneously; The combination selection module is used to generate a selection control key for selecting to combine the images and a selection control key for selecting to save the images captured by the first camera and the second camera respectively. 11. the dual camera control system of mobile terminal as claimed in claim 7 is characterized in that, described control chip comprises two I2C bus interfaces, two serial port interfaces, two clock interfaces, two synchronous interfaces and two reset interface, where The two I2C bus interfaces are independently connected to the first camera and the second camera, and the two serial ports are connected through two sets of independent serial communication buses, two independent MIPI communication buses, or a set of serial communication buses and The combination of a group of MIPI buses is independently connected to the first camera and the second camera; The two clock interfaces, the two synchronization interfaces and the two reset interfaces use independent source clock signals, synchronization signals and reset signals to communicate with the first camera and the second camera respectively. 12. A mobile terminal, characterized by comprising the dual-camera control device according to claim 1 or 2.

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