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Interface expanding method and device for tablet personal computer

A technology for tablet computer and interface expansion, which is applied in the fields of electrical digital data processing, instrumentation, error detection/correction, etc., which can solve problems such as user inconvenience and increase user expenditure

Active Publication Date: 2013-01-16
高新兴物联科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this not only increases the user's expenditure, but also causes the user to carry the expansion device when the tablet computer needs to be taken out, which causes great inconvenience to the user.

Method used

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  • Interface expanding method and device for tablet personal computer
  • Interface expanding method and device for tablet personal computer

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0053] The embodiment of tablet computer interface extension method provided by the present invention, such as figure 1 As shown, the method includes:

[0054] Step 101. Detect whether the VBUS pin has voltage input. When there is no voltage input, enter step 102; when there is voltage input, enter step 104;

[0055] Step 102, detecting the impedance between the ID pin and the GND pin of the interface;

[0056] Step 103, according to the detected impedance value, determine the type of cable inserted into the interface, and then perform step 106;

[0057] Step 104, detecting whether the DP pin and the DM pin are short-circuited or disconnected;

[0058] Step 105, according to the detection result, determine the type of the cable inserted into the interface;

[0059] Step 106 , according to the determined type of the cable plugged into the interface, control related components in the tablet computer to perform corresponding operations.

[0060] Preferably, the step 103 may b...

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PUM

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Abstract

The invention provides an interface expanding method and device for a tablet personal computer. The device is embedded in a tablet personal computer, and comprises an interface, a voltage detecting unit, an impedance detecting unit, a charging detecting unit, and a central processing unit, wherein the interface is used for inserting a cable; the voltage detecting unit is used for detecting whether voltage is input in a power supply pin (VBUS), if not, informing the impedance detecting unit, if yes, informing the charging detecting unit; the impedance detecting unit is used for detecting the impedance between a signal identification pin (ID) and a grounded pin (GND) of the interface after the notice sent from the voltage detecting unit is detected; the charging detecting unit is used for detecting whether a digital positive pin (DP) and a digital minus (DM) pin are in a short circuit or open circuit; the central processing unit is used for determining the type of the cable inserted in the interface according to the impedance value detected by the impedance detecting unit or the result detected by the charging detecting unit, and controlling the associated parts in the tablet personal computer to perform corresponding operations. With the adoption of the method and the device provided by the invention, the cables in various types can be connected on micro USB (universal serial bus) interfaces or mini USB interfaces without using an external expanding apparatus.

Description

technical field [0001] The invention relates to tablet computer technology, in particular to a tablet computer interface expansion method and device. Background technique [0002] At present, the shape of the tablet computer (Tablet) is becoming more and more concise, especially the interface design is becoming more and more concise. Gradually, the data communication interface, charging interface, audio and video interface, and even the vehicle equipment interface are all integrated into one physical interface, which is usually a Micro Universal Serial Bus (USB) or Mini USB interface. However, at present, it is necessary to connect an external expansion device to the Micro USB or Mini USB interface, such as an expansion slot or a docking station, in order to connect different types of cables to the Micro USB interface, including adapter charging cables, USB charging cables, A Type-USB cables, Type-B USB cables, audio cables, video cables, car equipment cables, etc. However...

Claims

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Application Information

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IPC IPC(8): G06F1/16G06F13/40
CPCG06F13/382G06F1/16G06F13/385G06F13/426G06F13/4086G06F1/266G06F1/3262G06F11/3027G06F11/3051
Inventor 姚小朋
Owner 高新兴物联科技股份有限公司
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