Mobile phone and vehicle machine interconnection image screen projection method and system

Abstract

The invention discloses an image projection method and system for interconnection between a mobile phone and a vehicle-mounted infotainment system, and the method enables the content of data transmission to be smaller and the transmission rate to be faster under the condition that the data size of unnecessary transition images is reduced through compressing the definition and quality of the transition images between a first target image and a second target image. The delay between the mobile phone and the vehicle-mounted terminal is reduced, so that the interconnection synchronism of the mobile phone and the vehicle-mounted terminal is improved, and the operation of remote screen projection is smoother; and an adaptive compression algorithm is utilized, upper and lower threshold values of a network data transmission speed are set, and an optimal compression mode is automatically selected, so that the data transmission of handcart interconnection has an intelligent adjustment function, and better image quality and use experience are kept in the optimal compression mode under the condition of keeping smooth screen projection of interconnection between a vehicle machine and a mobile phone.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone vehicle computer interconnection, and in particular to a method and system for projecting images interconnected between a mobile phone and a vehicle computer. Background Art

[0002] With the rapid development of the economy, the in-vehicle infotainment system (referred to as car computer) in cars has gradually developed towards intelligence and informationization, and can interact with smartphones. Smartphones can remotely control cars through wireless networks and view internal information of the car. Generally, most mobile phones can control the car computer screen through software projection, thereby realizing the function of controlling the car.

[0003] In the existing mobile phone and car computer interconnection technology, since the chip used in the mobile phone is more advanced than that used in the car computer, there will be a mismatch problem in the decoding ability of the image screen when the mobile phone receives the image transmitted by the car computer, resulting in control delays and jams. When the car computer receives the control command from the mobile phone, the car computer has made the corresponding command operation, but the picture on the mobile phone is not updated in real time; the smoothness of the interconnection between the car computer and the mobile phone needs to be improved, so there is a need for a method that can improve the smoothness of image projection control between the mobile phone and the car computer. Summary of the invention

[0004] In view of the disadvantage in the above technology that image transmission is delayed and stuck when remotely projecting the screen to control the vehicle computer due to the mismatch in chip performance between the mobile phone and the vehicle computer, the present invention provides a method for interconnecting a mobile phone and a vehicle computer to project an image.

[0005] To achieve the above object, the present invention provides a method for interconnecting a mobile phone and a vehicle computer and projecting an image, comprising the following steps: S1, after the mobile phone and the vehicle computer are connected, the mobile phone obtains the first target image of the vehicle computer; S2, generating a touch command by touching the content in the first target image with the mobile phone, and transmitting the touch command to the vehicle computer; S3, the vehicle computer receives the touch command and compresses the transition image from the first target image to the second target image to reduce the burden of data transmission; S4, the vehicle computer screen jumps from the first target image to the second target image, and the second target image is projected onto the mobile phone.

[0006] As an improved solution of the present invention, the mobile phone establishes wireless communication with the vehicle computer through a wireless network or Bluetooth communication method to perform data transmission of the first target image, the second target image and the touch command.

[0007] As an improved solution of the present invention, in S3, the clarity, quality and size of the transition image are compressed by a compression algorithm.

[0008] As an improved solution of the present invention, the compression algorithm is an adaptive compression algorithm, which controls the compression degree of the transition image according to the network transmission rate.

[0009] The present invention also provides a mobile phone and vehicle computer interconnection image projection system, comprising Image control module, used to control the image transmission between the vehicle computer and the mobile phone and the vehicle computer system, and send control signals; An image compression module receives a control signal, compresses the transition image transmitted by the image transmission module, and generates a transmission signal; The image transmission module is used to receive transmission signals and transmit image images and touch commands between the vehicle computer and the mobile phone.

[0010] As an improved solution of the present invention, the image transmission module is mainly connected to the mobile phone and the vehicle computer through a wireless network or Bluetooth wireless communication method to transmit the first target image, the second target image and the touch command.

[0011] As an improved solution of the present invention, the image compression module mainly compresses the clarity, quality and size of the transition image between the first target image and the second target image through an image compression algorithm.

[0012] As an improved solution of the present invention, the image compression algorithm is mainly an adaptive compression algorithm, which controls the compression degree of the transition image according to the network transmission rate.

[0013] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention provides a method and system for interconnecting a mobile phone and a vehicle computer and projecting an image. The present invention compresses the clarity and quality of the transition image between the first target image and the second target image, thereby reducing the data size of unnecessary transition images, making the content of data transmission smaller, the transmission rate faster, and reducing the delay between the mobile phone and the vehicle computer, thereby improving the synchronization of the interconnection between the mobile phone and the vehicle computer, making the remote projection operation smoother; and using an adaptive compression algorithm, setting upper and lower thresholds of the network data transmission speed, and automatically selecting the best compression method, so that the data transmission of the mobile phone and the vehicle computer has the function of intelligent adjustment, while maintaining smooth interconnection and projection between the vehicle computer and the mobile phone, maintaining better image quality and user experience with the best compression method. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a diagram of the method steps of the present invention; Figure 2 It is the module connection diagram of the present invention. DETAILED DESCRIPTION

[0015] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0016] In the following description, the example details are given to provide a deeper understanding of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. It should be understood that the specific embodiments are only used to explain the present invention and are not used to limit the present invention.

[0017] It should be understood that when the terms "include" and / or "comprises" are used in this specification, they indicate the existence of the stated features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0018] See also Figure 1-Figure 2 A method for interconnecting a mobile phone and a vehicle computer and projecting an image thereon comprises the following steps: S1, after the mobile phone is connected to the vehicle computer, the mobile phone obtains the first target image of the vehicle computer.

[0019] S2, generating a touch command by touching the content in the first target image with the mobile phone, and transmitting the touch command to the vehicle computer.

[0020] Among them, the mobile phone mainly establishes wireless communication with the vehicle computer through wireless network, Bluetooth and other communication methods to transmit data of the first target image, the second target image and the touch command.

[0021] S3, the vehicle computer receives the touch command and compresses the transition image from the first target image to the second target image to reduce the burden of data transmission.

[0022] Among them, the clarity and quality of the transition image are compressed by a compression algorithm. The compression algorithm is an adaptive compression algorithm, which controls the compression degree of the transition image according to the network transmission rate, thereby significantly improving the smoothness of the screen projection control.

[0023] S4, the vehicle computer screen jumps from the first target image to the second target image, and the second target image is projected onto the mobile phone.

[0024] Among them, the transition image refers to the intermediate frame animation generated by the jump from the first target image to the second target image. Since the transition image will not change the touch result, and the participation of the transition image will lead to a decrease in the smoothness and real-time performance of the interconnection between the mobile phone and the vehicle computer, the quality, clarity and other parameters of the transition image can be compressed without affecting the interconnection between the mobile phone and the vehicle computer. By reducing the amount of transition image data transmission, the data transmission efficiency is improved, and the burden of wireless network or Bluetooth data transmission is further reduced, thereby improving the smoothness and real-time performance of the interconnection between the mobile phone and the vehicle computer.

[0025] Since the interaction between pictures is essentially the switching between different static pictures, only the first target image and the second target image need to be displayed clearly, and the intermediate frame between the first target image and the second target image can be discarded to increase the transmission speed.

[0026] In this embodiment, the method for image compression can mainly use an adaptive compression algorithm to adaptively adjust the compression degree of the intermediate frame images according to the speed of the network transmission rate. When the network transmission rate is fast, the clarity of the intermediate frame images is appropriately adjusted to maintain smooth screen projection control. On the contrary, when the network transmission rate is slow, the quality and clarity of the intermediate frame images are sacrificed to improve the smoothness and real-time interconnection between the vehicle computer and the mobile phone. The compression method is automatically selected through the dynamic compression algorithm; specifically, the upper and lower thresholds of the network transmission rate can be set to adjust the compression degree of the transition image without affecting the vehicle computer screen projection control.

[0027] The specific compression method is that when the first target image jumps to the second target image, the transition image is first preprocessed to reduce the resolution of the image or reduce the color quality in the image to reduce the amount of data, and then transform coding is performed to convert the image from the spatial domain to the frequency domain, and then the transformed image is quantized to reduce the data accuracy of the image, thereby reducing the amount of data of the transition image; wherein, for reducing the color quality of the image, since the image is composed of many pixels, and each pixel contains RGB values, that is, the pixel is obtained by changing and superimposing the three color channels of R (red), G (green), and B (blue), and the brightness value of each color is 0-255, and 1 color channel corresponds to 1 byte in size, that is, one pixel occupies 3 bytes. Assuming that the pixel size of the transition image displayed on the vehicle computer is 500*500, contains a total of 250,000 pixels, a total of 750,000 bytes equal to 750kb of data. By performing color redundancy detection on pixels, we can find the same or similar color positions in multiple areas of the image and define them into different color clusters. By limiting clusters of different similar colors, for example, the transition image is divided into 16 color clusters, that is, the pixel colors in the transition image are limited to 16 colors (similar to the grayscale adjustment method, converting the color image to a grayscale image), reducing the color vividness. Since the colors are limited to 16 colors before, the amount of data will also be greatly reduced. The compressed image size is 750kb / 3=250kb, which will also reduce the data size and data accuracy of the transition image without affecting its normal display, thereby achieving the purpose of compression.

[0028] The present invention also provides a mobile phone and vehicle computer interconnected image projection system, comprising: The image control module is used to control the image transmission between the vehicle computer and the mobile phone and the vehicle computer system, and send control signals.

[0029] The image compression module receives the control signal, compresses the transition image transmitted by the image transmission module, and generates a transmission signal.

[0030] The image transmission module mainly connects the mobile phone and the vehicle computer through a wireless network or Bluetooth wireless communication method to transmit the first target image, the second target image and the touch command.

[0031] The image transmission module is used to receive transmission signals and transmit image images and touch commands between the vehicle computer and the mobile phone; wherein, the image compression module mainly compresses the clarity, quality and size of the transition image between the first target image and the second target image through an image compression algorithm; the image compression algorithm is mainly an adaptive compression algorithm, which controls the compression degree of the transition image according to the network transmission rate.

[0032] The advantages of the present invention are: 1) The present invention reduces the amount of data transmission between the mobile phone and the vehicle computer by compressing the transition image between the first target image and the second target image, so that the first target image and the second target image have a faster transmission speed.

[0033] 2) Through the adaptive compression algorithm, the best compression method is automatically selected to maintain better image quality and user experience while keeping the connection and screen projection between the car and the mobile phone smooth.

[0034] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A method for interconnecting a mobile phone and a vehicle computer to project an image, characterized in that: The following steps are involved: S1, after the mobile phone and the vehicle computer are connected, the mobile phone obtains the first target image of the vehicle computer; S2, generating a touch command by touching the content in the first target image with the mobile phone, and transmitting the touch command to the vehicle computer; S3, the vehicle computer receives the touch command and adjusts the parameters of the transition image from the first target image to the second target image to reduce the burden of data transmission; S4, the vehicle computer screen jumps from the first target image to the second target image, and the second target image is projected onto the mobile phone.

2. The method for projecting images between a mobile phone and a vehicle according to claim 1, characterized in that: The mobile phone establishes wireless communication with the vehicle computer through a wireless network and a Bluetooth communication method to transmit data of the first target image, the second target image and the touch command.

3. The method for projecting images between a mobile phone and a vehicle according to claim 1, characterized in that: In S3, the clarity and quality of the transition image are adjusted and compressed by a compression algorithm to reduce the data size of the transition image.

4. The method for projecting images between a mobile phone and a vehicle according to claim 3, characterized in that: The compression algorithm is an adaptive compression algorithm, which controls the compression degree of the transition image according to the network transmission rate.

5. A mobile phone and vehicle computer interconnection image projection system for implementing a mobile phone and vehicle computer interconnection image projection method as described in claims 1-4, characterized in that: include: Image control module, used to control the image transmission between the vehicle computer and the mobile phone and the vehicle computer system, and send control signals; An image compression module receives a control signal, compresses the transition image transmitted by the image transmission module, and generates a transmission signal; The image transmission module is used to receive transmission signals and transmit image images and touch commands between the vehicle computer and the mobile phone.

6. The mobile phone and vehicle computer interconnected image projection system according to claim 5, characterized in that: The image transmission module is mainly connected to the mobile phone and the vehicle computer through a wireless network or Bluetooth wireless communication method to transmit the first target image, the second target image and the touch command.

7. The mobile phone and vehicle computer interconnected image projection system according to claim 5, characterized in that: The image compression module compresses the clarity, quality and size of the transition image between the first target image and the second target image mainly through an image compression algorithm.

8. The mobile phone and vehicle computer interconnected image projection system according to claim 7, characterized in that: The image compression algorithm is mainly an adaptive compression algorithm, which controls the compression degree of the transition image according to the network transmission rate.

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