Realtek Semiconductor Inc.

Qingxi He

Weimin Zeng

Chi-Wang Chai

Wujun Chen

Li Liu

Jing Wang

Lingzhi Liu

Wei Li

Rong Zhang

Wei Pu

An encoder includes a frame level processing circuit, a coding tree unit (CTU) level processing circuit and an encoding circuit. The frame level processing circuit is arranged to calculate a bit number of a current frame according a target bitrate and a frame rate, and the frame level processing circuit is further arranged to calculate a quantization parameter of the current frame according to the bit number of the current frame and at least one parameter. The CTU level processing circuit is arranged to use an adaptive quantization mode to adjust the quantization parameter to generate an adjusted quantization parameter. The encoding circuit is arranged to encode the current frame to generate output data according to the adjusted quantization parameter.

Encoder using coding tree unit level adaptive quantization mode to adjust frame level quantization parameter and associated signal processing method

A transmitter for handling multiple formats of a video sequence, comprises a preprocessing module, for receiving a first format of a video sequence, to generate metadata of a second format of the video sequence according to the first format of the video sequence and the second format of the video sequence; and an encoder, couple to the preprocessing module, for transmitting the first format of the video sequence and the metadata in a bit stream to a receiver.

Device and method of handling multiple formats of a video sequence

Growing community of inventors

Suzhou, China

Qingxi He