Group 1 - The core point of the article is that Beijing Xiaomi Mobile Software Co., Ltd. has obtained a patent for a signal encoding and decoding method, device, encoding equipment, decoding equipment, and storage medium, with the patent announcement number CN114127844B and an application date of October 2021 [1] - Beijing Xiaomi Mobile Software Co., Ltd. was established in 2012 and is located in Beijing, primarily engaged in internet and related services [1] - The company has a registered capital of 148.8 million RMB and has made investments in 4 enterprises, participated in 138 bidding projects, and holds 5000 patent records along with 123 administrative licenses [1]