Vehicle-mounted Bluetooth connection system based on USB interface

Abstract

The utility model relates to a vehicle-mounted Bluetooth connection system based on a USB interface, belonging to the technical field of vehicle-mounted Bluetooth connection, the vehicle-mounted Bluetooth connection system comprises an external vehicle-mounted Bluetooth module and a DPS audio processor, a control circuit is integrated in the external vehicle-mounted Bluetooth module and is used for directly processing and transmitting an external vehicle-mounted sound source, and the external vehicle-mounted Bluetooth module is connected with the DPS audio processor. The external vehicle-mounted Bluetooth module is provided with a USB interface, and the USB interface is used for being in butt joint with the DPS audio processor, so that audio data transmission is conducted between the external vehicle-mounted Bluetooth module and the DPS audio processor. According to the vehicle-mounted Bluetooth connection system based on the USB interface, digital audio of a peripheral sound source can be directly transmitted in a lossless mode, DSP digital signal audio input can be connected in a lossless mode, high speed is achieved, the communication rate is greatly improved, and the vehicle-mounted Bluetooth connection system is suitable for popularization and application. And seamless connection and lossless transmission between digital signal processing of the USB peripheral interface equipment and an input sound source of an original vehicle host are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted Bluetooth connection, in particular to a vehicle-mounted Bluetooth connection system based on a USB interface. Background Art

[0002] The in-car Bluetooth system is a system that uses Bluetooth technology for audio and communication connections in the car. It uses Bluetooth wireless technology to achieve wireless connection between the car and the smartphone or other Bluetooth devices to achieve audio playback, calls and other functions. The in-car Bluetooth system enables drivers to enjoy audio entertainment and communication functions conveniently and safely, improving the convenience and comfort of driving. However, in the complex electronic and power systems of traditional cars, USB data transmission is often subject to various degrees of electromagnetic interference, resulting in data damage, loss or breakdown of electronic devices in the DSP audio device, making the sound source output by the DSP audio device have sound quality damage, noise and sound source missing, making it difficult for users to obtain complete sound source data, greatly reducing the transmission quality and transmission efficiency of the in-car sound source; and traditional DSP audio devices need to go through multiple steps to process the sound source before it can be fully output, reducing the rate of audio data transmission. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a vehicle-mounted Bluetooth connection system based on a USB interface.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a vehicle-mounted Bluetooth connection system based on a USB interface, the vehicle-mounted Bluetooth connection system comprises an external vehicle-mounted Bluetooth module and a DPS audio processor, the external vehicle-mounted Bluetooth module comprises a control circuit, the control circuit is integrated inside the external vehicle-mounted Bluetooth, and is used to directly process and transmit an external vehicle-mounted audio source, the external vehicle-mounted Bluetooth module is provided with a USB interface, and the USB interface is used to connect the DPS audio processor, so that the external vehicle-mounted Bluetooth module and the DPS audio processor perform audio signal transmission.

[0006] Furthermore, in a preferred embodiment of the present invention, the control circuit is connected to the power circuit via a USB interface.

[0007] Furthermore, in a preferred embodiment of the present invention, the power supply circuit is used to provide the control circuit and the USB interface with the power required for processing and transmitting the external vehicle audio source.

[0008] Furthermore, in a preferred embodiment of the present invention, the DPS audio processor is used to receive an external vehicle audio source and convert it into an audio digital signal.

[0009] Furthermore, in a preferred embodiment of the present invention, the DPS audio processor is provided with a vehicle-mounted audio source receiving end, and the vehicle-mounted audio source receiving end is used to receive an audio source of a vehicle-mounted audio source device to realize the input of the audio source.

[0010] Furthermore, in a preferred embodiment of the present invention, a power amplifier circuit is provided in the DPS audio processor.

[0011] Furthermore, in a preferred embodiment of the present invention, the power amplifier circuit is used to amplify the audio signal to an ideal output power to drive the speaker to operate.

[0012] Furthermore, in a preferred embodiment of the present invention, the speaker is connected to the DPS audio processor via a wire.

[0013] Furthermore, in a preferred embodiment of the present invention, a human-computer interaction interface is provided on the DPS audio processor.

[0014] Furthermore, in a preferred embodiment of the utility model, the human-computer interaction interface is used to connect a display screen and a vehicle-mounted DSP audio tuning software, so that a user can obtain audio source playback information through the display screen or the vehicle-mounted DSP audio tuning software, and the user can control the playback effect of the audio source through the audio tuning software.

[0015] The beneficial technical effects of the utility model are:

[0016] The in-vehicle Bluetooth connection system of this solution is equipped with a USB interface for reading and transmitting digital signals, achieving high-speed data reading and transmission, greatly improving the communication rate. The external in-vehicle Bluetooth based on the USB interface can directly and losslessly transmit the digital audio of the external in-vehicle audio source, and losslessly connect to the DSP digital signal audio input, realizing the seamless connection and lossless transmission of the digital signal processing of the USB peripheral interface device and the original car host input audio source, thereby improving the audio source playback quality. The USB interface protocol is suitable for most cars, thereby improving the use adaptation rate, good practicality and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0018] Figure 1 It is a structural schematic diagram of a vehicle-mounted Bluetooth connection system based on a USB interface;

[0019] Figure 2This is a structural diagram of the car Bluetooth with peripheral USB interface. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the utility model, the reference to "embodiment", "one embodiment", "some embodiments", or "other embodiments" indicates that the specific features, structures or characteristics described in conjunction with the embodiment are included in at least some embodiments, but not necessarily all embodiments. Multiple occurrences of "embodiment", "one embodiment", or "some embodiments" do not necessarily all refer to the same embodiment. If the specification describes that a component, feature, structure or characteristic "may", "perhaps" or "can" be included, the specific component, feature, structure or characteristic is not necessarily included. If the specification or claim mentions "one" element, it does not mean that there is only one element. If the specification or claim mentions "another" element, it does not exclude the presence of more than one other element. In addition, specific features, structures, functions or characteristics can be combined in one or more embodiments in any suitable manner. For example, the first embodiment can be combined with the second embodiment, as long as the specific features, structures, functions or characteristics associated with the two embodiments are not mutually exclusive.

[0022] In the description of the present invention, unless otherwise specified, the use of ordinal adjectives such as "first", "second", and "third" to describe a common object only refers to different instances of the same object, and does not imply that the objects described in this way must adopt a given order, whether in time, space, order, or any other manner. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] Example

[0025] like Figure 1 , 2 As shown, the utility model provides a vehicle-mounted Bluetooth connection system based on a USB interface, the vehicle-mounted Bluetooth connection system includes an external vehicle-mounted Bluetooth module and a DPS audio processor, the external vehicle-mounted Bluetooth module includes a control circuit, the control circuit is integrated inside the external vehicle-mounted Bluetooth, and is used to directly process and transmit an external vehicle-mounted audio source, the external vehicle-mounted Bluetooth module is provided with a USB interface, and the USB interface is used to connect to the DPS audio processor, so that the external vehicle-mounted Bluetooth module and the DPS audio processor transmit audio signals.

[0026] Furthermore, in a preferred embodiment of the present invention, the control circuit is connected to the power circuit via a USB interface.

[0027] Furthermore, in a preferred embodiment of the present invention, the power supply circuit is used to provide the control circuit and the USB interface with the power required for processing and transmitting the external vehicle audio source.

[0028] Furthermore, in a preferred embodiment of the present invention, the DPS audio processor is used to receive an external vehicle audio source and convert it into an audio digital signal.

[0029] Furthermore, in a preferred embodiment of the present invention, the DPS audio processor is provided with a vehicle-mounted audio source receiving end, and the vehicle-mounted audio source receiving end is used to receive an audio source of a vehicle-mounted audio source device to realize the input of the audio source.

[0030] Furthermore, in a preferred embodiment of the present invention, a power amplifier circuit is provided in the DPS audio processor.

[0031] Furthermore, in a preferred embodiment of the present invention, the power amplifier circuit is used to amplify the audio signal to an ideal output power to drive the speaker to operate.

[0032] Furthermore, in a preferred embodiment of the present invention, the speaker is connected to the DPS audio processor via a wire.

[0033] Furthermore, in a preferred embodiment of the present invention, a human-computer interaction interface is provided on the DPS audio processor.

[0034] Furthermore, in a preferred embodiment of the utility model, the human-computer interaction interface is used to connect a display screen and a vehicle-mounted DSP audio tuning software, so that a user can obtain audio source playback information through the display screen or the vehicle-mounted DSP audio tuning software, and the user can control the playback effect of the audio source through the audio tuning software.

[0035] The working process of the utility model is as follows:

[0036] First, plug the USB port on the external car Bluetooth module into the DPS audio processor to complete the connection. After the system is powered on, initialize the external car Bluetooth module, DPS audio processor and power amplifier circuit, and then execute the audio source input task, interactive operation task, audio data processing task, audio signal reading task and audio signal transmission task.

[0037] When the sound source input task is executed, it is mainly responsible for the collection and input of the sound source. It starts the vehicle-mounted sound source device to collect the target vehicle-mounted sound source. When the vehicle-mounted sound source device shows that the sound source data collection is completed, the sound source data is converted into an audio signal in a unified format, and the audio signal is input to the DPS audio processor through the vehicle-mounted sound source receiving end.

[0038] The audio data processing task mainly performs storage and processing on audio signals. After the audio signal enters the DPS audio processor through the vehicle-mounted audio source receiving end, the DPS audio processor converts and processes the audio signal in the DSP processing circuit to form a digital signal. After the audio signal conversion is completed, it is stored in the DPS audio processor.

[0039] The interactive operation tasks are mainly after the system is initialized. At this time, the display screen connected to the human-computer interaction interface displays the audio playback status interface. When the human-computer interaction interface detects the digital signal of the audio source, the display screen or the on-board DSP tuning software will display the audio source information. For example, when the user presses the "play button", the current audio source playback status will be displayed on the display screen. When the "sound effect selection button" is pressed, the display screen shows the sound effect options that can be converted.

[0040] The audio signal reading task receives execution instructions according to the user's audio control operation, starts the power circuit according to the execution instruction, and the power provided by the power circuit enables the control circuit to run. When the USB interface detects the audio digital signal stored in the DPS audio processor, the control circuit runs the corresponding preset signal reading parameters to control the USB interface to directly read the audio digital signal, so that the audio digital signal is directly connected to the external car Bluetooth module.

[0041] The audio signal transmission task is mainly responsible for the direct lossless transmission of the audio digital signal read by the control circuit. When the audio digital signal of the DPS audio processor is completely read, the preset signal transmission parameter calculation is performed in the control circuit, so that the read audio digital signal is losslessly transmitted to the power amplifier circuit via Bluetooth transmission. The power amplifier circuit automatically adjusts the power of the losslessly transmitted audio digital signal to the speaker operating power, driving the speaker to play the sound source.

[0042] To sum up, the in-vehicle Bluetooth connection system of this solution is equipped with a USB interface for reading and transmitting digital signals, which realizes high-speed data reading and transmission, greatly improves the communication rate, and the external in-vehicle Bluetooth based on the USB interface can directly and losslessly transmit the digital audio of the external in-vehicle audio source, and losslessly connect the DSP digital signal audio input, thereby realizing the seamless connection and lossless transmission of the digital signal processing of the USB peripheral interface device and the original car host input audio source, improving the quality of audio source playback, and the USB interface protocol is suitable for most cars, thereby improving the use adaptation rate, good practicality and high reliability.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A car Bluetooth connection system based on a USB interface, characterized in that: The in-vehicle Bluetooth connection system includes an external in-vehicle Bluetooth module and a DPS audio processor. The external in-vehicle Bluetooth module includes a control circuit, which is integrated inside the external in-vehicle Bluetooth and is used to directly process and transmit an external in-vehicle audio source. The external in-vehicle Bluetooth module is provided with a USB interface, which is used to connect to the DPS audio processor, so that the external in-vehicle Bluetooth module and the DPS audio processor transmit audio signals. The control circuit is connected to the power circuit via a USB interface; The power supply circuit is used to provide the power required by the control circuit and the USB interface to process and transmit the external vehicle audio source; The DPS audio processor is used to receive an external vehicle audio source and convert it into an audio digital signal; The DPS audio processor is provided with a vehicle-mounted audio source receiving end, and the vehicle-mounted audio source receiving end is used to receive the audio source of the vehicle-mounted audio source device to realize the input of the audio source.

2. The vehicle-mounted Bluetooth connection system based on a USB interface according to claim 1, characterized in that: The DPS audio processor is provided with a power amplifier circuit.

3. The vehicle-mounted Bluetooth connection system based on a USB interface according to claim 2, characterized in that: The power amplifier circuit is used to amplify the audio signal to an ideal output power to drive the speaker to work.

4. The vehicle-mounted Bluetooth connection system based on a USB interface according to claim 3, characterized in that: The speaker is connected to the DPS audio processor via a wire.

5. The vehicle-mounted Bluetooth connection system based on a USB interface according to claim 1, characterized in that: The DPS audio processor is provided with a human-computer interaction interface.

6. The vehicle-mounted Bluetooth connection system based on a USB interface according to claim 5, characterized in that: The human-computer interaction interface is used to connect the display screen and the vehicle-mounted DSP audio tuning software, so that the user can obtain the sound source playback information through the display screen or the vehicle-mounted DSP audio tuning software, and the user can control the playback effect of the sound source through the audio tuning software.

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