公开(公告)号：US20190158114A1

公开(公告)日：2019-05-23

申请号：US16205186

申请日：2018-11-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chen Zheng ,  Liang Ma ,  Xiaojian Liu ,  Yuejun Wei ,  Xin Zeng

IPC: H03M13/11 ,  H03M13/00

CPC classification number: H03M13/1102 ,  H03M13/11 ,  H03M13/116 ,  H03M13/616 ,  H03M13/6393 ,  H03M13/6516 ,  H04L1/00

Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z≥K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.

公开(公告)号：US10180915B2

公开(公告)日：2019-01-15

申请号：US15160863

申请日：2016-05-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chen Zheng ,  Long Fu ,  Jianfeng Zhan ,  Lixin Zhang

IPC: H04L29/06 ,  G06F12/14 ,  G06F9/4401 ,  G06F21/00 ,  G06F9/455 ,  G06F21/57 ,  G06F21/62 ,  G06F21/78

Abstract: A method and an apparatus for accessing physical resources, is used to restrict access to physical resources of other light system kernel Light OSs by a first Light OS in a multi-kernel operating system and ensure security of accessing physical resources among the Light OSs. A method, executed by secure firmware, includes: receiving a physical address corresponding to a physical resource to be accessed by the first Light OS; determining whether the physical address corresponding to the physical resource is out of bounds; and if the physical address corresponding to the physical resource is within bounds, sending an access continuity signal to the first Light OS; or if the physical address corresponding to the physical resource is out of bounds, sending an access error signal to the first Light OS.

公开(公告)号：US09798932B2

公开(公告)日：2017-10-24

申请号：US15068017

申请日：2016-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chen Zheng ,  Yang Liu ,  Dong Wang

IPC: G06K9/00 ,  G06T7/20 ,  G06K9/46

CPC classification number: G06K9/00744 ,  G06K9/00771 ,  G06K9/4604 ,  G06T7/20 ,  G06T2207/10016 ,  G06T2207/30232

Abstract: A video extraction method and device. The method includes acquiring original image resolution S0 of a Tth frame in which a target image corresponding to a target object is located, where T is a positive integer, and acquiring a resolution parameter P of the target image in the Tth frame, obtaining extraction resolution S1 according to the original image resolution S0 and the resolution parameter P, and extracting an image of the target object in a (T+1)th frame according to the extraction resolution S1. In this way, when extraction processing is performed on the target object in the (T+1)th frame, extraction processing is performed on the target image corresponding to the target object in the (T+1)th frame with reference to the extraction resolution, which is obtained through analysis, of the (T+1)th frame.