Circuit capable of fast recognizing types of chargers and recognizing method for circuit

An identification method and charger technology, which is applied in the direction of instruments, measuring electricity, measuring electrical variables, etc., can solve the problems of complicated types of chargers, and achieve the effects of fast identification, safety assurance, and accurate identification

Active Publication Date: 2015-07-08
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are various types of chargers, different manufacturers and different types of chargers, but they are generally divided into standard chargers and other chargers, and other chargers include USB PC and non-standard chargers, how to simply and quickly identify the charger type, and ensure the accuracy has become an urgent problem to be solved by those skilled in the art

Method used

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  • Circuit capable of fast recognizing types of chargers and recognizing method for circuit
  • Circuit capable of fast recognizing types of chargers and recognizing method for circuit

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Embodiment Construction

[0026] The following will describe in detail with reference to the accompanying drawings in conjunction with the embodiments, so as to further explain the technical features and advantages of the present invention.

[0027] Circuit principle block diagram of the present invention is as figure 1 As shown, a circuit for quickly identifying the charger type includes a USB socket and a CPU processor connected to the USB socket. The USB socket includes four ports, including a VCHG port, a signal D+ port, and a signal D- port and a grounding port, the circuit also includes an analog switch connected to the CPU, and the other end of the analog switch is connected to the power module.

[0028] Further, the VCHG port of the USB socket is connected to the positive output terminal of the power supply of the CPU processor, the signal D+ port of the USB socket is connected to the positive pulse output port of the CPU processor, and the signal D- port of the USB socket is connected to the n...

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Abstract

The invention discloses a circuit capable of fast recognizing types of chargers and a recognizing method for the circuit. The recognizing circuit comprises a USB (universal serial bus) socket and a CPU (central processing unit) connected with the USB socket, the USB socket comprises four ports respectively including a VCHG port, a signal D+ port, a signal D- port and a grounding port, the circuit further comprises an analog switch connected with the CPU, and the other end of the analog switch is connected with a power module. The VCHG port of the USB socket is connected with a power anode output end of the CPU, the signal D+ port of the USB socket is connected with a positive pulse output port of the CPU, and the signal D- port of the USB socket is connected with a negative pulse output port of the CPU. According to the recognizing method of the recognizing circuit, the types of the chargers can be recognized fast, accurately and reliably by means of testing pulse signals of the signal D+ port and the signal D- port, and accordingly recognizing efficiency is improved.

Description

technical field [0001] The invention relates to a charger for mobile terminal electronic products, in particular to a circuit for quickly identifying the charger type and an identifying method thereof. Background technique [0002] A charger generally refers to a device that converts alternating current to low-voltage direct current. Chargers are widely used in various fields, especially in the field of life, they are widely used in common electrical appliances such as mobile phones and cameras. The charger is a static converter device that uses power electronic semiconductor devices to convert alternating current with constant voltage and frequency into direct current. The charger has a wide range of application prospects in the occasions where the battery is used as a working power source or a backup power source. [0003] However, there are many types of existing chargers, different manufacturers and different types of chargers, but they are generally divided into stand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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