公开(公告)号：US20220067475A1

公开(公告)日：2022-03-03

申请号：US17416303

申请日：2019-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Enhua Deng ,  Dan Guo ,  Weiwen Pang ,  Zhixiong Li

IPC: G06K19/077 ,  H05K5/02 ,  G06K19/07

Abstract: A memory card includes a packaging board and a plurality of contacts disposed on one side surface of the packaging board, where the contacts include a power supply contact, a grounding contact, and a detection contact. The detection contact is disposed adjacent to one of the power supply contact or the grounding contact and is suspended or electrically connected to the other of the power supply contact or the grounding contact.

公开(公告)号：US11640512B2

公开(公告)日：2023-05-02

申请号：US17276072

申请日：2019-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhongzheng Li ,  Jian Zhou ,  Zhixiong Li ,  Jingyang Wang

IPC: G06K19/06 ,  G06K19/077

Abstract: A multimedia card includes a substrate, and a main control chip, a memory chip, and an interface contacts that are disposed on the substrate. The main control chip and the memory chip are covered with a packaging layer. The interface contacts includes a power contact, configured to receive a first voltage that is input from the outside; and a transformer circuit is further disposed on the substrate, is coupled to the interface contacts, the main control chip, and the memory chip, and is configured to convert the input first voltage into a second voltage, to provide two types of power supplies with the first voltage and the second voltage for the main control chip and the memory chip. In the foregoing manner, an area of the multimedia card is reduced, and a quantity of working modes of the multimedia card increases.

公开(公告)号：US20220076090A1

公开(公告)日：2022-03-10

申请号：US17417705

申请日：2019-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lingcong Xie ,  Dan Guo ,  Enhua Deng ,  Zhixiong Li

IPC: G06K19/07 ,  G06F13/10 ,  G06F13/38 ,  G06K19/077 ,  G06K7/00

Abstract: A memory card identification method and a mobile device are provided. The memory card identification method includes: sending an initialization command of a first-type memory card communications protocol to a to-be-identified memory card; detecting whether there is a response in a command pin of the memory card; and identifying the memory card as a first-type memory card or a second-type memory card based on a response status of the command pin.

公开(公告)号：US11893436B2

公开(公告)日：2024-02-06

申请号：US17417705

申请日：2019-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lingcong Xie ,  Dan Guo ,  Enhua Deng ,  Zhixiong Li

IPC: G06K19/07 ,  G06F13/10 ,  G06F13/38 ,  G06K7/00 ,  G06K19/077

CPC classification number: G06K19/0722 ,  G06F13/102 ,  G06F13/385 ,  G06K7/0052 ,  G06K19/07732 ,  G06K19/07743

Abstract: A memory card identification method and a mobile device are provided. The memory card identification method includes: sending an initialization command of a first-type memory card communications protocol to a to-be-identified memory card; detecting whether there is a response in a command pin of the memory card; and identifying the memory card as a first-type memory card or a second-type memory card based on a response status of the command pin.