公开(公告)号：US12155933B2

公开(公告)日：2024-11-26

申请号：US18160345

申请日：2023-01-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaoyong Xu ,  Jia Hu ,  Lei Lu

IPC: H04N23/69 ,  G01R33/07 ,  H04N23/55 ,  H04N25/772 ,  H04N25/778

Abstract: A zoom method and an apparatus to improve zoom accuracy of a camera module are disclosed. The zoom method includes: controlling, based on a target focal length, the lens to move in different subregions when the lens moves in an operation region, and determining position information of the lens based on a position detection relationship of a subregion in which the lens is currently located. The lens is controlled to move based on a position of the lens detected when the lens moves, so that the lens can more accurately stop at a position corresponding to the target focal length. This helps improve focusing accuracy of the camera module.

公开(公告)号：US11979695B2

公开(公告)日：2024-05-07

申请号：US18069552

申请日：2022-12-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qingyin Fang ,  Jia Hu

IPC: H04N23/68 ,  H04Q9/00

CPC classification number: H04Q9/00 ,  H04N23/6812

Abstract: An SPI-based data transmission system is provided. In the system, a master SPI apparatus enables a first slave SPI apparatus by using a combination of a first and a second chip select signal. In response to the master SPI apparatus driving the first chip select signal to be in an enable state and driving the second chip select signal to be in a disable state, the master SPI apparatus controls a second slave SPI apparatus to send data using a data line. The master SPI apparatus further receives data by using the data line, and the first slave SPI apparatus receives data using the data line. When the first chip select signal is in the enable state and the second chip select signal is in the disable state, the master SPI apparatus and the first slave SPI apparatus can simultaneously receive data transmitted by the second slave SPI apparatus.