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Universal serial bus device and method of operation thereof

A technology of universal serial bus and operation method, which is applied in the direction of instrumentation, electrical digital data processing, etc., and can solve problems such as restrictions on the use of downlink data connection ports

Active Publication Date: 2020-08-25
VIA LABS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the number of downlink data connection ports of electronic devices is relatively small, the use of downlink data connection ports of electronic devices is limited

Method used

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  • Universal serial bus device and method of operation thereof
  • Universal serial bus device and method of operation thereof
  • Universal serial bus device and method of operation thereof

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Embodiment Construction

[0011] As used throughout this specification, including the claims, the term "coupled (or connected)" may refer to any means of connection, direct or indirect. For example, if it is described that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected through other devices or The second device is indirectly connected to the second device through some connection means. In addition, wherever possible, components / members / steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Components / components / steps using the same symbols or using the same terms in different embodiments can refer to related descriptions.

[0012] In some application scenarios, the number of universal serial bus (universal serial bus, hereinafter referred to as USB) connectors of the electronic device (hereinafter referre...

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Abstract

The present invention provides a universal serial bus device and an operating method thereof. The Universal Serial Bus device includes multiple downstream data connection ports and a control circuit. When the first external device is connected to the first downlink data connection port and the second downlink data connection port is not connected to any external device, the control circuit maintains the first downlink data connection port as the power connection port according to the first external device. One of the power receiving connection ports, and the second downlink data connection port remains as the other one of the power connection port and the power receiving connection port, regardless of whether the second downlink data connection port is connected to the second external device later, until the first The external device is removed from the first downstream data connection port.

Description

technical field [0001] The present invention relates to an electronic device, and more particularly to a USB device and its operating method. Background technique [0002] In order to reduce the volume of the electronic device, the number of connectors of the electronic device should be as few as possible. For example, some smartphones are equipped with only one Type-C Universal Serial Bus (USB Type-C, also known as USB-C) connector. More and more smartphones only use 1 USB-C connector and remove the traditional 3.5mm audio jack. The USB-C connector on the smart phone can be regarded as a downstream data connection port (Downstream-Facing Port, DFP). When the charger is connected to this USB-C connector, the charger can charge the smartphone. When the earphone is connected to the USB-C connector, the user can listen to the music played by the smart phone through the earphone. In any case, when the earphones are connected to the USB-C connector, the user cannot use the ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/42
CPCG06F13/4282
Inventor 王泽祥高启元
Owner VIA LABS INC