公开(公告)号：US20230007282A1

公开(公告)日：2023-01-05

申请号：US17897808

申请日：2022-08-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cui HU ,  Jingwei CHEN ,  Liang CHEN ,  Juanpeng HE ,  Shuo LIAN ,  Shuangquan WANG

IPC: H04N19/30 ,  H04N19/436 ,  H04N19/172 ,  H04N19/136

Abstract: Embodiments of this application provide an image transmission method and apparatus. The method includes: converting a first high-resolution image into a first low-resolution image, where first resolution of the first high-resolution image is higher than second resolution of the first low-resolution image; encoding the first low-resolution image to obtain a first bitstream; obtaining a second high-resolution image, where third resolution of the second high-resolution image is higher than the second resolution, and the second high-resolution image includes high-frequency information of the first high-resolution image and excludes low-frequency information of the first high-resolution image; obtaining an image residual between the first high-resolution image and the second high-resolution image, where the image residual is used to reflect the low-frequency information of the first high-resolution image; encoding the image residual to obtain a second bitstream; and sending the first bitstream and the second bitstream.

公开(公告)号：US20190012472A1

公开(公告)日：2019-01-10

申请号：US16111228

申请日：2018-08-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cui HU ,  ZhuFeng TAN ,  Shaojie SUN

IPC: G06F21/60 ,  H04L9/06 ,  H04L9/08 ,  G06Q20/32

Abstract: A system includes at least two buses including a first bus and a second bus, an encryption and decryption system corresponding to each bus, at least one signal processing module corresponding to each bus, and a bus converter coupled between the first bus and the second bus. According to the system provided in embodiments of the present invention, because data transmitted on a bus is encrypted data, even though an attacker obtains bus data by means of a probe attack, it is quite difficult to break a key, and an anti-attack capability of the system can be improved.