Code rate control method, code rate control device and wireless communication device

Abstract

Embodiments of the invention provide a code rate control method, a code rate control device, and a wireless communication device. The code rate control method is used for wireless communication, and includes: acquiring a first code rate control target and a second code rate control target; determining an encoding parameter according to the first code rate control target and the second code rate control target; encoding video source data by using the encoding parameter, wherein the first code rate control target is a code rate control target in a first preset time period, the second rate control target is a code rate control target in a second preset time period, and the first preset time period is not shorter than the second preset time period. The method can realize long-term and short-term control of coding, and improve reliability of subjective experience and wireless picture transmission.

Description

technical field [0001] Embodiments of the present invention relate to wireless image transmission technology, and in particular, to a code rate control method, a code rate control device, and a wireless communication device. Background technique [0002] The digital wireless image transmission system is applied to remote control aircraft, video surveillance, power line inspection and other equipment. A digital wireless image transmission system usually includes two parts: a transmitter and a receiver. The transmitter usually includes a video source module, a source encoding module, a channel encoding module, and a radio frequency module; the receiver includes a radio frequency module, a channel decoding module, and a source decoding module. modules and display modules. [0003] The function of the source coding module at the transmitting end is to compress the uncompressed code stream provided by the video source module into a code stream that can be carried by the wireless...

AI Technical Summary

Problems solved by technology

[0004] Although the above code rate control method is convenient to implement, it is insufficient to respond to environmental changes, and the reliability of the wireless image transmission system is not high

For example, if you use the method of selecting a fixed gear, the selected bit rate may be too low, which wastes the wireless channel capacity, and the user cannot experience better image transmission quality, or the selected bit rate may be too high, and the flight to After a certain distance exceeds the limit of the wireless channel capacity, the image transmission freezes and the image transmission is lost

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