Portable electronic device

By introducing an automatic switching circuit into the portable electronic device, the device can be connected to a USB circuit or an audio circuit according to the type of connected device, and a 5V power supply is provided, which solves the problem of insufficient number of USB interfaces, realizes the versatility of the audio interface, and improves For ease of use and thinness of the device.
CN102778918AInactive Publication Date: 2012-11-14STATE GRID CORPORATION OF CHINA +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORPORATION OF CHINA
Publication Date
2012-11-14
Estimated Expiration
Not applicable ยท inactive patent
Patent Text Reader

Abstract

The invention relates to a portable electronic device which comprises an audio interface, a universal serial bus (USB) circuit, an audio circuit and an automatic switching circuit; the automatic switching circuit is connected to the audio interface and is connected to the USB circuit or the audio circuit selectively; the automatic switching circuit is used for judging the type of the electronic device which is switched into the audio interface; when an audio device is switched into the audio interface, the automatic switching circuit is connected to the audio circuit, so that the audio interface transmits a voice signal; and when the USB device is switched into the audio interface, the automatic switching circuit is connected to the USB circuit and transmits voltage to the audio interface, so that the audio interface has the data interaction function of the USB interface.
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Description

technical field

[0001] The invention relates to a portable electronic device, in particular to a portable electronic device capable of expanding the number of USB interfaces. Background technique

[0002] Existing portable electronic devices are usually provided with various interfaces such as a USB interface, an earphone interface, and a microphone interface. Considering the miniaturization of portable electronic devices, the number of interfaces is generally set to be less. Taking a notebook computer as an example, it usually only has two USB ports, an earphone port and a microphone port, and one of the USB ports generally needs to be connected to a mouse, leaving only one USB port for connecting to other various electronic devices. Apparently, in the existing design, it is difficult to connect the notebook computer with multiple electronic devices at the same time through the USB interface, which is inconvenient to use. Contents of the invention

[0003] In view of th...

Claims

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