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Method and device for identifying charger type

A charger and type of technology, applied in circuit devices, battery circuit devices, measuring devices, etc., can solve problems such as damage to non-standard chargers and computers, and achieve the effect of improving user experience and ensuring charging safety.

Inactive Publication Date: 2009-04-01
GLOBAL INNOVATION AGGREGATORS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a big risk in this method. Once the user misuses, it may cause damage to non-standard chargers or even computers.
[0006] To sum up, in the prior art, there is no method that can give full play to the current supply capacity of various types of chargers while ensuring charging safety.

Method used

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  • Method and device for identifying charger type
  • Method and device for identifying charger type
  • Method and device for identifying charger type

Examples

Experimental program
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Embodiment Construction

[0025] The three types of chargers mentioned in the background technology all have a Mini_USB-B interface, but the specific Pin (pin) structure inside the interface of each charger is different:

[0026] The standard charger short-circuits Pin2 and Pin3 inside the Mini_USB-B interface;

[0027] The non-standard charger does not short-circuit Pin2 and Pin3 inside the Mini_USB-B interface;

[0028] When using a data cable with a Mini_USB-B interface to connect to the computer, the computer acts as a charger, and there is a pull-down resistor in series on Pin2 inside the computer.

[0029] The embodiment of the present invention utilizes the inherent features of the above three types of chargers to realize the identification of the above three types of chargers. The method for identifying the type of chargers in the embodiment of the present invention will first be described below:

[0030] Between the power output terminal of the electric device and the second pin of the Mini_U...

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Abstract

The embodiment of the invention discloses a method for identifying the type of a charger and a device thereof. A divider resistance is connected in series between the output terminal of power supply of electric equipment and a second pin of a universal serial bus Mini_USB-A type interface. The method for identifying the type of the charger includes: the second pin and a third pin of the Mini_USB-A type interface are set in a high-impedance state when detecting that the charger is accessed; a measuring point is set between the Mini_USB-B type interface of the charger and the divider resistance, and the voltage at the measuring point is measured; the type of the charger is identified according to the measured result. The electric equipment can choose different currents according to the type of the charger, thus fully playing a roll of current supplying of various chargers while ensuring the safety of charging, and promoting the feelings of customers.

Description

technical field [0001] The present invention relates to the field of terminal technology, in particular to a method and device for identifying a charger type. Background technique [0002] USB (Universal Serial Bus, Universal Serial Bus) is an interface technology applied in the computer field, and has been widely used in various electronic products such as mobile phones, portable players, and computer peripherals. Since the USB standard can provide a voltage of 5V, many electric devices powered by batteries can be charged by USB, and most of the charging interfaces are in the form of Mini_USB. Mini_USB is a miniaturized Universal Serial Bus interface, including Type A and Type B. The interface on the device is Mini_USB-A type, which can be connected to the standard USB interface on the computer through a data cable with Mini_USB-B interface for charging; it can also be connected to a special charger with Mini_USB-B interface. [0003] At present, special chargers are divi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R19/00G06F13/38
CPCG06F13/4072H02J7/00
Inventor 侯靖波
Owner GLOBAL INNOVATION AGGREGATORS LLC
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