Method and circuit for earphone identification and connection
A headphone and circuit technology, which is applied in the direction of headphone mechanical/electronic switches, connections, circuits, etc., can solve the problems of poor recognition accuracy, high cost, and complicated design of recognition circuits, and achieve high recognition accuracy and cost-saving effects
Active Publication Date: 2020-12-25
ZTE CORP
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- Description
- Claims
- Application Information
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Problems solved by technology
At present, in electronic equipment, a microprocessor is generally used to identify the type of earphone. This identification circuit design is complicated, the cost is high, and the identification accuracy is poor.
Method used
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Embodiment Construction
[0047]In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0048] figure 1 It is a schematic diagram of a European standard earphone plug according to an embodiment of the present invention, figure 2 It is the schematic diagram of the American standard earphone plug of the embodiment of the present invention, as figure 1 , figure 2 As shown, the main difference between the European standard earphones and the American standard earphones is that the order of the MIC area and the GND area is different. On the left side of the GND area; while the MIC area of the European standard earphone is adjacent to the channel area (left chann...
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Embodiments of the present invention disclose a method and circuit for earphone identification, and a method and circuit for earphone connection. The method and circuit for earphone connection include: when an earphone is detected to be inserted, comparing a channel area of the earphone and an adjacent area of the channel area. When the circuit state between the channel area of the earphone and the adjacent area of the channel area is a short-circuit state, it is determined that the adjacent area of the channel area is the grounding area, and the other adjacent area of the grounding area is the microphone area; output the first indication signal, so that the ground area and the microphone area of the earphone are connected to the ground terminal and the microphone terminal of the system respectively; when the circuit state between the channel area of the earphone and the adjacent area of the channel area is an open circuit state , determine that the adjacent area of the channel area is the microphone area, and the other adjacent area of the microphone area is the ground area; output the second indication signal, so that the ground area and the microphone area of the earphone are respectively connected to the ground terminal and the microphone terminal of the system.
Description
technical field [0001] The invention relates to earphone application technology, in particular to an earphone identification method and circuit, and an earphone connection method and circuit. Background technique [0002] There are many standards for earphones. The main difference is that there are two international standards: European standard earphones and American standard earphones. The biggest difference lies in the positions of the ground (GND) area and the microphone (MIC) area on the earphone. All electronic devices that support multimedia playback must be compatible with European standard headphones and American standard headphones. At present, in electronic equipment, a microprocessor is generally used to identify the earphone type. This type of identification circuit is complex in design, high in cost, and poor in identification accuracy. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the embodiment of the present i...
Claims
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IPC IPC(8): H04R3/00
CPCH04R2420/05H01R24/58H04R1/1041H04R5/04H01R2105/00
Inventor 刘凤鹏刘冬梅
Owner ZTE CORP