Car stereo with automatic control and wireless call function and its working method
A car audio and call function technology, applied in the direction of program control, computer control, general control system, etc., can solve the problems of not knowing whether the car microphone is available or working normally, inaccurate car audio clock oscillation, unreasonable audio circuit design, etc. , to achieve the effect of accurately realizing oscillation or stopping oscillation, enhancing driving safety, and reasonable circuit layout
Active Publication Date: 2019-03-05
延锋伟世通(重庆)汽车电子有限公司
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Problems solved by technology
[0002] In the existing technology, cars are becoming more and more popular in today's society. For users, cars are not only a means of transportation, but also a personalized consumer product. Therefore, car manufacturers have added car audio to bring better user experience. However, the existing car stereos cannot be synchronized with the external clock, and the clock oscillation of the car stereo itself is not accurate. Although some stereos have crystal oscillators, the circuit design is unreasonable and the operation is unstable.
After the user connects to the smart terminal through the Bluetooth circuit, he cannot know whether the car microphone is available or works normally
Method used
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[0066] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0067] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...
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The invention provides a vehicular audio system with automatic control and wireless call functions and a working method of the vehicular audio system with the automatic control and wireless call functions. The vehicular audio system comprises an MCU controller, a Bluetooth circuit, a microphone detection circuit and an MCU clock crystal oscillator. The Bluetooth signal end of the MCU controller is connected with the signal end of the Bluetooth circuit; the microphone signal end of the Bluetooth circuit is connected with the signal end of the microphone detection circuit; and the crystal oscillator signal end of the MCU controller is connected with the signal end of the MCU clock crystal oscillator. The circuit satisfies the demand of the special vehicular audio system; oscillation is started or stopped accurately under different voltages; the call making and answering functions are realized through the Bluetooth circuit; it is unnecessary to take out a mobile phone by a user; the driving security is increased; and the circuit is rational in design and stable in operation.
Description
technical field [0001] The invention relates to the field of car audio electronic circuits, in particular to a car audio with automatic control and wireless communication functions and a working method thereof. Background technique [0002] In the existing technology, cars are becoming more and more popular in today's society. For users, cars are not only a means of transportation, but also a personalized consumer product. Therefore, car manufacturers have added car audio to bring better user experience. However, the car stereos of the prior art cannot be synchronized with the external clock, and the clock oscillation of the car stereo itself is also inaccurate. Although some stereos have crystal oscillators, the circuit design is unreasonable and the operation is unstable. After the user connects the smart terminal through the Bluetooth circuit, he cannot know whether the car microphone is available or works normally. This just needs those skilled in the art to solve corre...
Claims
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IPC IPC(8): H04M1/60H04R1/22G05B19/042B60R16/02
CPCB60R16/02G05B19/042H04M1/6091H04R1/225
Inventor 罗通
Owner 延锋伟世通(重庆)汽车电子有限公司