Charging cable-based data transmission method and electronic device

Patent metadata

Field	Value
Publication number	US-2023261477-A1
Application number	US-202118014529-A
Country	US
Kind code	A1
Filing date	Jul 15, 2021
Priority date	Jul 15, 2020
Publication date	Aug 17, 2023
Grant date	—

Abstract

This application discloses a charging cable-based data transmission method and an electronic device. A first electronic device is connected to a second electronic device through a third electronic device, and the third electronic device includes a first data signal line and a second data signal line. When the method is applied to the first electronic device, the first electronic device may detect a connection to the second electronic device; send a first message through a first pin, where the first pin is connected to the first data signal line; and receive a second message through a second pin, where the second pin is connected to the second data signal line, and the first message and the second message are used for charging setting of the first electronic device.

First claim

1 - 57 . (canceled)

58 . A first electronic device, comprising:
at least one processor; and a memory coupled to the at least one processor and configured to store programming instructions that, when executed by the at least one processor, cause the first electronic device to: determine that a second electronic device is a dedicated charging port (DCP) device after establishing a physical connection to the second electronic device; send a first pulse signal through a first pin of the first electronic device; in response to sending the first pulse signal, detect an electrical signal of the second electronic device through a second pin of the first electronic device; determine that the second electronic device supports a fast charging mode; send a first message through the first pin; and receive a second message through the second pin, wherein the second message is a response message of the first message, and the first message and the second message are used for charging setting of the first electronic device.

59 . The first electronic device according to claim 58 , wherein the first pin is a pin connected to a negative signal data line between the first electronic device and the second electronic device, and the second pin is a pin connected to a positive signal data line between the first electronic device and the second electronic device.

60 . The first electronic device according to claim 58 , wherein the second pin is a pin connected to a positive signal data line between the first electronic device and the second electronic device, and the electrical signal is a high-level signal.

61 . The first electronic device according to claim 58 , wherein the first message comprises a first identifier used to indicate a receiver of the first message; and
the second message comprises a second identifier used to indicate a receiver of the second message.

62 . The first electronic device according to claim 61 , wherein the receiver of the first message is the second electronic device, and the receiver of the second message is the first electronic device.

63 . The first electronic device according to claim 58 , wherein the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
send a first reset signal through the first pin, wherein the first reset signal is used to indicate a receiver of the first reset signal to perform reset, and a pulse width of the first reset signal is associated with the receiver.

64 . The first electronic device according to claim 63 , wherein the receiver of the first reset signal is the second electronic device when the pulse width of the first reset signal is a first width, and the receiver of the first reset signal is a third electronic device when the pulse width of the first reset signal is a second width, wherein the first electronic device is connected to the second electronic device through the third electronic device.

65 . The first electronic device according to claim 58 , wherein before sending the first message through the first pin, the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
send a first signal through the first pin, wherein a frequency of the first signal is a first frequency, and the first signal is used to indicate that a frequency of the first message is the first frequency.

66 . The first electronic device according to claim 58 , wherein before receiving the second message through the second pin, the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
receive a second signal through the second pin, wherein a frequency of the second signal is a second frequency, and the second signal is used to indicate that a frequency of the second message is the second frequency.

67 . The first electronic device according to claim 58 , wherein before sending the first message through the first pin, the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
send a start signal that is a low-level signal; and after sending the first message through the first pin, the programming instructions, when executed by the at least one processor, further cause the first electronic device to: send an end signal that is a high-level signal.

68 . The first electronic device according to claim 58 , wherein before receiving the second message through the second pin, the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
receive a start signal that is a low-level signal; and after receiving the second message through the second pin, the programming instructions, when executed by the at least one processor, further cause the first electronic device to: receive an end signal that is a high-level signal.

69 . The first electronic device according to claim 58 , wherein the first electronic device performs full-duplex communication with the second electronic device through the first pin and the second pin.

70 . The first electronic device according to claim 58 , wherein the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
send a third message to the third electronic device through the first pin, wherein the third message is used to obtain configuration information of the third electronic device, or the third message is used by the first electronic device to indicate the third electronic device to switch a receiving/sending state of a pin.

71 . The first electronic device according to claim 70 , wherein the third message is used to obtain configuration information of the third electronic device from the third electronic device.

72 . The first electronic device according to claim 70 , wherein the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
receive a third response message from the third electronic device through the second pin, wherein the third response message is used to indicate the configuration information of the third electronic device.

73 . The first electronic device according to claim 70 , wherein the third message comprises a third identifier used to indicate that a receiver of the third message is the third electronic device.

74 . The first electronic device according to claim 70 , wherein the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
send an indication message to the second electronic device when determining that the configuration information of the third electronic device fails to be received, where the indication message is used to indicate the second electronic device to obtain the configuration information of the third electronic device.

75 . The first electronic device according to claim 70 , wherein the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
determine that communication with the third electronic device ends when a fourth message from the second electronic device is received through the second pin.

76 . The first electronic device according to claim 70 , wherein the programming instructions, when executed by the at least one processor, further cause the first electronic device to:
send a reset message to the third electronic device through th

Assignees

• Huawei Tech Co Ltd

Inventors

• Peng Jiang
• Li Zongjian
• Wang Chao
• Zhang Mingwei
• Yang Chengjun

Classifications

• H02J7/40 Primary

  characterised by the exchange of charge or discharge related data · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J7/44

  between battery management systems and power sources · CPC title

• H02J7/47 Primary

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• G06F13/4286

  using a handshaking protocol, e.g. RS232C link · CPC title