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Method and system for transmitting encoded and decoded data among processors, and visual telephone

A processor, codec technology, applied in two-way working systems, digital video signal modification, TV, etc., can solve the problems of low codec data efficiency, easy data frame loss and overflow, mosaic phenomenon, etc., to achieve safe and reliable transmission , It is not easy to drop frames and overflow, and the effect of processing logic is simple

Active Publication Date: 2010-11-24
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for transmitting codec data between processors, which aims to solve the problem that the transmission method of video data codec data provided by the prior art is not efficient, and the data is prone to frame loss and overflow, which will cause Problems causing mosaic phenomenon and image distortion

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  • Method and system for transmitting encoded and decoded data among processors, and visual telephone
  • Method and system for transmitting encoded and decoded data among processors, and visual telephone

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of 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.

[0028] In the embodiment of the present invention, for the uplink video call data, the video call data of the air interface is first sent to the protocol stack for soft decoding through the communication protocol stack, and then sent to the coprocessor by the decoding thread of the application processor, and the coprocessor hard After decoding, the received video call data is displayed on the LCD; for the uplink video call data, the video call data captured by the camera is firstly hard-coded by the coprocessor, and then sent to the protocol stack software through the encoding thread of the applicat...

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Abstract

The invention is applied in the technical field of mobile communication, and provides a method and a system for transmitting encoded and decoded data among processors, and a visual telephone. The method comprises the following steps that: when a decoded data writing engine detects that a data frame subjected to software decoding by a protocol stack is a first data frame, the decoding setting of a coprocessor is configured and a decoding thread of an application processor is started; the decoding thread of the application processor transmits the data frame subjected to the software decoding by the protocol stack to the coprocessor; the coprocessor performs hardware decoding on the data frame, and displays decoded video call data on a display screen; the coprocessor performs hardware encoding on the video call data shot by a camera; the coprocessor transmits the encoded data to the application processor; and an encoding thread of the application processor transmits the encoded data to the protocol stack for software encoding and transmits the encoded data to an air interface through a communication protocol stack. Through the method, the transmission of the encoded and decoded data can be more securely and reliably realized in the video call process.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a method and system for transmitting encoded and decoded data between processors and a videophone. Background technique [0002] With the development of communication technology, we have entered the era of 3G and 4G. In mobile communication, a very important service is videophone. In videophone calls, the smoothness and clarity of video is directly related to user experience , The smooth and clear video is guaranteed by the reliable transmission of video stream data. The transmission of codec data of video data is a very important part, which is related to the stability of the system and the direct experience of users. [0003] However, the existing codec data transmission of video data puts the processing flow and the control flow together without separate processing, which makes the processing logic more complicated and affects the efficiency of data tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/14H04N19/42H04N19/44H04N19/61
Inventor 郝国栋
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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