A passenger vehicle on-board crew entertainment integrated system and apparatus

Abstract

The application relates to the technical field of a vehicle-mounted entertainment system, in particular to a passenger vehicle-mounted driver and passenger entertainment integrated system and device. The system comprises a control area, a driver area and a passenger area; the control area comprises an audio control module and a display control module, the passenger area comprises a first display module, a microphone module and a first audio processing module, and the driver area comprises a second audio processing module; the first end of the display control module is connected with the first end of the first display module, and the second end of the display control module is connected with the first end of the audio control module; the first end of the microphone module is connected with the first end of the first audio processing module, and the second end of the first audio processing module is connected with the second end of the audio control module; and the first end of the second audio processing module is connected with the third end of the audio control module. The application can realize the beneficial effect of integration of the driver and passenger entertainment system in the vehicle-mounted entertainment system.

Description

Technical Field

[0001] This application relates to the technical field of in-vehicle entertainment systems, and more particularly to an integrated in-vehicle entertainment system and device for buses. Background Technology

[0002] In transportation scenarios such as tourist buses, the functional requirements of in-vehicle entertainment systems are showing an increasingly diversified and personalized development trend. Drivers and passengers have significantly different demands for entertainment functions: drivers prioritize a simple and direct control interface and real-time display of driving information to ensure driving safety; while passengers expect rich entertainment functions such as high-definition video playback and karaoke to enhance their travel experience. However, in-vehicle entertainment devices are typically installed in limited spaces such as the center console, roof, or seatbacks. With the diversification of passenger entertainment needs, the independent installation and configuration of multiple devices places higher demands on the physical space of the center console area.

[0003] Currently, a common solution is to equip drivers and passengers with separate entertainment devices. For example, the driver's area uses a separate audio playback device, while the passenger area is equipped with a high-definition video playback system or karaoke equipment. While this separate design can basically meet their respective entertainment needs, its use of multiple devices operating independently leads to the following problems: First, the independent installation of multiple devices inevitably occupies too much space, which directly contradicts the limited installation space in the central control area of ​​vehicles such as buses. Second, the functions of the driver and passenger areas cannot be efficiently integrated and coordinated. For example, there is a lack of linkage mechanisms between functions such as sound processing and volume control, making it difficult to achieve complete and flexible control in a single device.

[0004] In conclusion, current in-vehicle entertainment systems struggle to achieve efficient space utilization and functional synergy, failing to meet the integration needs under limited space conditions. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this application provides an in-vehicle entertainment system and device for buses, so as to realize the integration of the driver and passenger entertainment system in the in-vehicle entertainment system.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] In a first aspect, this application provides an in-vehicle entertainment system for a bus, the system comprising: a control area, a driver's area, and a passenger area;

[0008] The control area includes an audio control module and a display control module; the passenger area includes a first display module, a microphone module and a first audio processing module; and the driver area includes a second audio processing module.

[0009] The first end of the display control module is connected to the first end of the first display module, and the second end of the display control module is connected to the first end of the audio control module, for decoding and outputting video signals to the first display module in the passenger area;

[0010] The first end of the microphone module is connected to the first end of the first audio processing module, and the second end of the first audio processing module is connected to the second end of the audio control module, for executing the audio output of the passenger area through microphone input or audio control.

[0011] The first end of the second audio processing module is connected to the third end of the audio control module, and is used to execute the audio output of the driver area through audio control.

[0012] Optionally, the display control module includes a first storage unit, a status display unit, an output processing unit, a second storage unit, a broadcast receiving unit, and a first control unit; the first control unit is a first control chip, and the model of the first control chip is EW7800;

[0013] The first terminal of the first control chip is connected to the first terminal of the first storage unit;

[0014] The second end of the first control chip is connected to the first end of the status display unit;

[0015] The third terminal of the first control chip is connected to the first terminal of the output processing unit, and the second terminal of the output processing unit is connected to the first terminal of the first display module.

[0016] The fourth terminal of the first control chip is connected to the first terminal of the second storage unit;

[0017] The fifth terminal of the first control chip is connected to the first terminal of the broadcast receiving unit, and the second terminal of the broadcast receiving unit is provided with a broadcast receiving antenna;

[0018] The sixth and seventh terminals of the first control chip are connected to the audio control module. The sixth terminal of the first control chip is a communication terminal, and the seventh terminal of the first control chip is a digital-to-analog converter decoding terminal.

[0019] Optionally, the output processing unit includes a signal conversion chip of model LT2611, and the first display module is an HDMI interactive screen;

[0020] The first end of the signal conversion chip is connected to the third end of the first control chip, and the second end of the signal conversion chip is connected to the interactive end of the HDMI interactive screen.

[0021] Optionally, the first storage unit may include a USB flash drive and / or a TF card.

[0022] Optionally, the audio control module includes a second control chip, a CAN unit, a signal integration unit, a digital-to-analog converter unit, and an audio switch unit; the second control chip is a chip integrating a microcontroller and Bluetooth, and the model of the second control chip is A7900;

[0023] The first terminal of the second control chip is connected to the first terminal of the CAN unit;

[0024] The second terminal of the second control chip is connected to the second terminal of the microphone module;

[0025] The third terminal of the second control chip is connected to the sixth terminal of the first control chip, the seventh terminal of the first control chip is connected to the first terminal of the digital-to-analog converter, the second terminal of the digital-to-analog converter is connected to the first terminal of the audio switch unit, and the second terminal of the audio switch unit is connected to the fourth terminal of the second control chip.

[0026] The fifth terminal of the second control chip is connected to the first terminal of the signal integration unit, and the second terminal of the signal integration unit is provided with an FM antenna;

[0027] The second control chip is connected to the second end of the first audio processing module or the first end of the second audio processing module through an output port. The output port includes the third end of the audio switch unit, the third end of the signal integration unit, and the sixth end of the second control chip.

[0028] The seventh terminal of the second control chip is equipped with a Bluetooth antenna.

[0029] Optionally, the fourth terminal of the audio switch unit is connected to the third terminal of the broadcast receiving unit;

[0030] The fifth terminal of the audio switch unit is connected to an external auxiliary audio source.

[0031] Optionally, the first audio processing module includes a first sound effect unit, a first power amplifier unit, and a first speaker unit;

[0032] The first audio unit includes an audio processing chip of model PT2313;

[0033] The first end of the first sound effect unit is connected to the third end of the signal integration unit, the second end of the first sound effect unit is connected to the third end of the audio switch unit, and the third end of the first sound effect unit is connected to the sixth end of the second control chip.

[0034] The first power amplifier unit includes a power amplifier of model UTC7265;

[0035] The first end of the first power amplifier unit is connected to the fourth end of the first sound effect unit, and the second end of the first power amplifier unit is connected to the first end of the first speaker unit.

[0036] Optionally, the microphone module includes an operational amplifier unit, a digital processing unit, an audio amplification unit, and a microphone unit;

[0037] The audio amplification unit includes an LVM321 audio amplifier, and the digital processing unit includes an AMP1821 digital signal processor.

[0038] The first end of the microphone unit is connected to the first end of the audio amplification unit, the second end of the audio amplification unit is connected to the first end of the digital processing unit, and the second end of the digital processing unit is connected to the eighth end of the first control chip.

[0039] The operational amplifier unit includes a low-noise operational amplifier of model NJM4580. The first terminal of the operational amplifier unit is connected to the third terminal of the digital processing unit, and the second terminal of the operational amplifier unit is connected to the third terminal of the first power amplifier unit.

[0040] Optionally, the second audio processing module includes a second sound effect unit, a second power amplifier unit, and a second speaker unit;

[0041] The second audio unit includes an audio processing chip of model PT2313;

[0042] The first end of the second sound effect unit is connected to the third end of the signal integration unit, the second end of the second sound effect unit is connected to the third end of the audio switch unit, and the third end of the second sound effect unit is connected to the sixth end of the second control chip.

[0043] The second power amplifier unit includes a power amplifier of model UTC7265;

[0044] The first end of the second power amplifier unit is connected to the fourth end of the second sound effect unit, and the second end of the second power amplifier unit is connected to the first end of the second speaker unit.

[0045] Secondly, this application provides an in-vehicle entertainment system for a passenger vehicle, which is equipped with the aforementioned in-vehicle entertainment system for a passenger vehicle.

[0046] The beneficial effects of this application are: the system integrates the functional modules of the control area, driver area, and passenger area. The control area includes an audio control module and a display control module; the passenger area is equipped with a first display module, a microphone module, and a first audio processing module; and the driver area has a second audio processing module. The display control module connects to the first display module and the audio control module, and is responsible for decoding video signals and outputting them to the passenger area display to meet the passengers' needs for high-definition video playback; the microphone module connects to the first audio processing module, and then to the audio control module, to realize audio output in the passenger area and support karaoke functionality; the second audio processing module connects to the audio control module to ensure audio output in the driver area.

[0047] This design not only significantly reduces space occupation and enables the independent operation and collaborative management of the driver's area and passenger area, but also allows both drivers and passengers to enjoy personalized entertainment experiences through efficient connections between modules, meeting the increasingly diverse and personalized needs of in-vehicle entertainment systems in transportation scenarios such as tourist buses. Attached Figure Description

[0048] Figure 1 This is a schematic block diagram of the in-vehicle entertainment system for passengers and drivers provided in the embodiments of this application;

[0049] Figure 2 This is a schematic block diagram of the display control module provided in the embodiments of this application;

[0050] Figure 3 This is a schematic block diagram of the audio control module provided in the embodiments of this application;

[0051] Figure 4 This is a schematic block diagram of the first audio processing module and microphone module provided in the embodiments of this application;

[0052] Figure 5 This is a unit schematic block diagram of the second audio processing module provided in the embodiments of this application. Detailed Implementation

[0053] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0054] The following will clearly and completely describe the concept, specific structure, and resulting technical effects of this application in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this application. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this application can be combined interactively without contradicting each other.

[0055] Reference Figure 1 , Figure 1 This is a schematic block diagram of the in-vehicle entertainment system for a bus provided in this application embodiment. It involves several key modules of the in-vehicle entertainment system for a bus provided in this application. The modules can be divided into a control area, a driver area, and a passenger area based on their functions. These are described in detail below:

[0056] The control area is a module that integrates audio control and display control. It is responsible for audio source switching, audio effect processing, and the distribution and control of audio and video signals. It includes an audio control module and a display control module.

[0057] The driver's area is a functional area for drivers, which includes a second audio processing module. For driving safety reasons, it does not have video display entertainment, but focuses on audio output and control needs, such as broadcasting and music.

[0058] The passenger area is an entertainment area for passengers, which includes a first display module (such as a high-definition TV screen), a microphone module (supporting karaoke function), and a first audio processing module (responsible for audio processing and output in the passenger area).

[0059] Among them, the functional areas form a coordinated linkage. Firstly, in terms of the display function implementation in the passenger area, the first end of the display control module is connected to the first end of the first display module, and the second end of the display control module is connected to the first end of the audio control module, which is used to decode and output the video signal to the first display module in the passenger area.

[0060] Among them, the display control module is based on the decoding master controller and integrates a conversion chip. It is responsible for decoding, format conversion and output control of video signals. At the same time, it is linked with the audio control module through the serial port to coordinate the audio and video synchronization control module.

[0061] The first display module is a high-definition display device in the passenger area, such as a large TV screen, used to receive video signals output by the display control module and present film and entertainment content.

[0062] Specifically, the first end of the display control module is electrically connected to the input end of the first display module. This allows the decoding main controller in the display control module to read externally accessed or internally preset video files, decode them to generate a video signal, convert it to HDMI format, and transmit it to the first display module in the passenger area via a dedicated cable, enabling high-definition video playback. Simultaneously, its second end is connected to the audio control module. While outputting the video signal, it sends a synchronization command to the audio control module via a serial port, ensuring that the audio control module switches to an audio source matching the video (e.g., synchronously switching audio to the USB drive audio source in USB drive playback mode), achieving audio-visual synchronization.

[0063] Secondly, the first end of the microphone module is connected to the first end of the first audio processing module, and the second end of the first audio processing module is connected to the second end of the audio control module, for executing the audio output of the passenger area through microphone input or audio control.

[0064] The microphone module is a module that includes at least one microphone input, which is responsible for receiving microphone signals and performing DSP processing, and is used to support the karaoke function in the passenger area.

[0065] The first audio processing module is a passenger area audio processing unit that integrates sound effects processing, signal amplification, and speaker functions to perform audio output based on the input from the audio control module and / or microphone module.

[0066] Specifically, the microphone module is connected to the first end of the first audio processing module through the first end, so that the microphone signal is transmitted to the first audio processing module (i.e., the passenger area, because the driver area will not be set to karaoke mode for driving safety reasons) through a series of audio processing and amplification, and finally drives the passenger area speaker to emit sound.

[0067] Meanwhile, the second end of the first audio processing module is connected to the second end of the audio control module to realize the coordinated control of the microphone signal and other sound sources. Specifically, when the microphone module detects an input signal (such as a user singing), the microphone module automatically reduces the volume of the currently playing sound source through the serial port, in conjunction with the display control module and the audio control module, to prevent the microphone sound from being masked. The audio control module coordinates the switching logic of the microphone signal and other sound sources according to user operations such as switching via panel buttons, such as prioritizing microphone input or mixed output.

[0068] Thirdly, the first end of the second audio processing module is connected to the third end of the audio control module, and is used to execute the audio output of the driver area through audio control.

[0069] The second audio processing module is the driver's area audio processing unit, which is similar in structure to the first audio processing unit in the passenger area. It integrates sound effect processing, signal amplification and speaker functions, and can independently process the driver's area audio signal and drive the speaker to realize the audio output function.

[0070] Specifically, the first end of the second audio processing module is connected to the third end of the audio control module. This allows the audio control module to process the audio source signal according to the MCU instructions within it, and then transmit the signal through the third end to the power amplification section of the second audio processing module. After amplification, the signal drives the driver's area speaker to produce sound. During this process, the driver can independently control the volume or switch audio sources using the panel buttons. The commands are processed by the MCU in the audio control module, which then synchronously updates the output parameters of the audio control module, ensuring that the driver's area audio operates independently of the passenger area audio.

[0071] More specifically, by integrating the above three functions and facilitating communication and collaboration between modules, the problems of large space occupation, functional conflicts, and safety hazards in traditional bus entertainment equipment are solved. Specifically, the control area reuses the display control module and audio control module, reducing the number of independent devices and adapting to limited installation spaces such as the dashboard and roof. The display control module strictly limits video signals to be output only to the passenger area, while the driver area only displays audio information, avoiding driver distraction. Furthermore, independent audio processing for the passenger and driver areas ensures that the audio sources for the driver and passengers do not interfere with each other. For example, while passengers are karaoke, the driver can independently listen to navigation, satisfying diverse passenger entertainment needs while ensuring driving safety, and simultaneously reducing equipment costs and power consumption.

[0072] Furthermore, referring to Figure 2 , Figure 2 This is a schematic block diagram of the display control module provided in the embodiments of this application. The diagram illustrates a specific implementation unit of the above-mentioned key modules in a specific embodiment. The following is a detailed description in conjunction with... Figure 2 Please provide a detailed explanation:

[0073] Regarding the display control module and the first display module: The display control module includes a first storage unit, a status display unit, an output processing unit, a second storage unit, a broadcast receiving unit, and a first control unit; the first control unit is a first control chip, and the model of the first control chip is EW7800;

[0074] The first control unit is a main control module with the EW7800 chip as its core. It is responsible for coordinating all functions of the display control module, including but not limited to data reading, video decoding, signal output, external device linkage (such as audio control module) and status monitoring.

[0075] The first terminal of the first control chip is connected to the first terminal of the first storage unit;

[0076] The first storage unit is a physical media interface used to store multimedia data such as video files and images. It supports the reading and caching of high-definition video files and provides raw materials for the display control module. In this embodiment, the first storage unit includes a USB flash drive and / or a TF card, meaning the physical media interface of the first storage unit is a USB flash drive / TF card slot.

[0077] The second end of the first control chip is connected to the first end of the status display unit;

[0078] The status display unit is a small LCD screen or LED indicator array integrated into the driver's area panel. It is used to display the current status of the system in real time, including but not limited to text / icon information such as audio source mode, volume, and broadcast channel. However, for driving safety reasons, it is not equipped with a video playback function.

[0079] The third terminal of the first control chip is connected to the first terminal of the output processing unit, and the second terminal of the output processing unit is connected to the first terminal of the first display module.

[0080] The output processing unit is composed of a signal conversion chip of model LT2611. It receives the LVDS video signal output by the first control chip, converts it into HDMI format, and transmits it to the first display module to adapt to the interface requirements of the high-definition display device in the passenger area.

[0081] More specifically, the output processing unit includes a signal conversion chip of model LT2611, and the first display module is an HDMI interactive screen;

[0082] The first end of the signal conversion chip is connected to the third end of the first control chip, and the second end of the signal conversion chip is connected to the interactive end of the HDMI interactive screen.

[0083] In this embodiment, the first display module is an HDMI interactive screen, which can integrate an HDMI signal receiving interface and a capacitive touch module, supporting video display and user touch operation (such as selecting songs, switching songs, and adjusting volume). The interactive end is a composite interface that integrates signal input and touch feedback.

[0084] Specifically, the first end of the signal conversion chip receives the raw video signal output by the first control chip (EW7800), processes it, and converts it into an HDMI standard signal; the second end connects to the interactive end of the HDMI interactive screen, transmitting the high-definition video signal to the display screen for playback. Simultaneously, touch operations on the HDMI interactive screen (such as user tapping the screen to select a song) are fed back to the first control chip through the built-in touch channel of the interactive end, enabling data retrieval.

[0085] The fourth terminal of the first control chip is connected to the first terminal of the second storage unit;

[0086] The second storage unit is used to store system initialization parameters, including but not limited to default volume, display resolution, and audio source priority, to ensure that no reconfiguration is required after device restart or interruption.

[0087] The fifth terminal of the first control chip is connected to the first terminal of the broadcast receiving unit, and the second terminal of the broadcast receiving unit is provided with a broadcast receiving antenna;

[0088] The broadcast receiving unit is a unit that integrates DAB / FM frequency modulation receiving circuit. It captures wireless broadcast signals through an external broadcast receiving antenna, demodulates them, and then transmits them to the first control chip for processing.

[0089] The sixth and seventh terminals of the first control chip are connected to the audio control module. The sixth terminal of the first control chip is a communication terminal, and the seventh terminal of the first control chip is a digital-to-analog converter decoding terminal.

[0090] The communication end uses the UART serial port protocol to send control commands to the audio control module. These control commands include, but are not limited to, switching audio sources, adjusting volume, and switching equalizer modes. The digital-to-analog converter decoding end is connected to the digital-to-analog converter (DAC) to convert digital audio signals (such as PCM streams decoded from USB flash drives or digital audio from broadcast receivers) into analog signals, which are then transmitted to the audio control module for sound effect processing.

[0091] Furthermore, referring to Figure 3 , Figure 3 This is a schematic block diagram of the audio control module provided in the embodiments of this application, combined with... Figure 3 It can be seen that the audio control module includes a second control chip, a CAN unit, a signal integration unit, a digital-to-analog converter unit, and an audio switch unit; the second control chip is a chip integrating a microcontroller and Bluetooth, and the model of the second control chip is A7900;

[0092] The second control chip is a control unit with the model number A7900, which is used for signal processing of the audio control module, linkage with external devices (such as CAN bus, microphone module) and wireless communication (Bluetooth connection) functions.

[0093] The first terminal of the second control chip is connected to the first terminal of the CAN unit;

[0094] The CAN unit is the vehicle CAN bus interface module, which communicates with the vehicle's ECU (electronic control unit) through differential signal transmission to receive vehicle information in real time.

[0095] The second terminal of the second control chip is connected to the second terminal of the microphone module;

[0096] The third terminal of the second control chip is connected to the sixth terminal of the first control chip, the seventh terminal of the first control chip is connected to the first terminal of the digital-to-analog converter, the second terminal of the digital-to-analog converter is connected to the first terminal of the audio switch unit, and the second terminal of the audio switch unit is connected to the fourth terminal of the second control chip.

[0097] The digital-to-analog conversion unit is a unit composed of DAC digital-to-analog conversion chips. It receives the analog audio signal output from the digital-to-analog conversion decoding end of the first control chip (EW7800), converts it into a digital signal, and then supplies it to the second control chip for sound effect algorithm processing, such as equalizer, reverb, etc.

[0098] The fifth terminal of the second control chip is connected to the first terminal of the signal integration unit, and the second terminal of the signal integration unit is provided with an FM antenna;

[0099] The signal integration unit is a unit that integrates an FM demodulation circuit and a signal mixer. It receives wireless broadcast signals through an FM antenna and outputs a mixed audio stream to the subsequent processing unit.

[0100] The second control chip is connected to the second end of the first audio processing module or the first end of the second audio processing module through an output port. The output port includes the third end of the audio switch unit, the third end of the signal integration unit, and the sixth end of the second control chip.

[0101] In this embodiment, the audio switch unit is a channel switching unit based on the BU4052 multi-channel analog switch, which supports fast switching of multiple audio sources and is controlled by the second control chip through corresponding pins to select the channel.

[0102] More specifically, the fourth terminal of the audio switch unit is connected to the third terminal of the broadcast receiving unit;

[0103] The fifth terminal of the audio switch unit is connected to an external auxiliary audio source.

[0104] Specifically, external auxiliary audio refers to audio signals from external devices (such as analog audio output from passengers' mobile phones and tablets) accessed through the AUX interface, used to support user-defined audio source input and expand system compatibility.

[0105] Specifically, the audio switch unit (BU4052) establishes a signal path with the broadcast receiver unit through its fourth terminal to receive the FM / DAB analog audio output; the fifth terminal connects to the external AUX interface to receive audio signals from the user's external devices. In application, the second control chip (A7900) controls the selection through GPIO pins according to priority rules (e.g., Bluetooth connection takes precedence over FM, and manual switching takes precedence over automatic mode). For example, when a passenger inserts an AUX device to play music, the second control chip detects the auxiliary audio level signal and selects the channel through the fifth terminal of the audio switch unit, while simultaneously turning off other low-priority audio sources (such as the default FM broadcast), thus achieving audio source switching.

[0106] The seventh terminal of the second control chip is equipped with a Bluetooth antenna.

[0107] Specifically, this application embodiment constructs an audio hub around a second control chip (A7900). Specifically, the first end connects to the CAN unit to receive vehicle information in real time; the second end receives the analog audio signal (human voice processed by the AMP1821) from the microphone module, which is then mixed internally with the digital audio from the digital-to-analog converter (receiving the accompaniment signal from the EW7800) in the internal DSP to generate a karaoke mixed signal; the signal integration unit receives broadcast signals through the FM antenna, demodulates them, and merges them into the same channel with Bluetooth audio received by the Bluetooth antenna (seventh end) from the mobile phone (such as music played by passengers connected via Bluetooth). The second control chip controls the audio switch unit through the fourth end to select the highest priority audio source, for example, automatically blocking FM when Bluetooth is connected.

[0108] Specifically, the signal integration unit receives broadcast signals via an FM antenna. After demodulation, these signals are combined with Bluetooth audio received by a mobile phone (e.g., music played by a passenger via Bluetooth) via a Bluetooth antenna (seventh terminal) into the same channel. The second control chip controls the audio switch unit via the fourth terminal to select the highest priority audio source (e.g., automatically disabling FM when Bluetooth is connected). The processed audio signal is distributed through three types of output ports: the third terminal of the audio switch unit outputs to the first audio processing module in the passenger area, the third terminal of the signal integration unit outputs to the second audio processing module in the driver area, and the sixth terminal serves as a backup analog output interface, such as for connecting external headphones.

[0109] Reference Figure 4 , Figure 4 This is a schematic block diagram of the first audio processing module and microphone module provided in the embodiments of this application, combined with... Figure 4 It can be seen that the first audio processing module includes a first sound effect unit, a first power amplifier unit, and a first speaker unit;

[0110] The first audio unit includes an audio processing chip of model PT2313;

[0111] The first end of the first sound effect unit is connected to the third end of the signal integration unit, the second end of the first sound effect unit is connected to the third end of the audio switch unit, and the third end of the first sound effect unit is connected to the sixth end of the second control chip.

[0112] The first power amplifier unit includes a power amplifier of model UTC7265;

[0113] The first end of the first power amplifier unit is connected to the fourth end of the first sound effect unit, and the second end of the first power amplifier unit is connected to the first end of the first speaker unit.

[0114] Specifically, the first audio unit (PT2313) integrates multi-source audio through three input interfaces. The first input receives the FM broadcast mixed signal output from the signal integration unit; the second input connects to a high-priority audio source (such as Bluetooth music or AUX input) selected by the audio switch unit; and the third input receives control commands from the second control chip (A7900) (such as equalizer parameters adjusted by passengers via the HDMI interactive screen). The PT2313 performs dynamic range compression (DRC) on the input signal and superimposes it with audio effects, then outputs the processed analog audio to the first power amplifier unit (UTC7265) through the fourth input. The UTC7265 amplifies the input low-voltage signal to driver stage power, filters out high-frequency noise through a low-pass filter circuit, and then transmits it to the first speaker unit through the second input, enabling audio playback in the passenger area.

[0115] Furthermore, referring to Figure 4 , combined Figure 4 It can be seen that the microphone module includes an operational amplifier unit, a digital processing unit, an audio amplification unit, and a microphone unit;

[0116] The audio amplification unit includes an LVM321 audio amplifier, and the digital processing unit includes an AMP1821 digital signal processor.

[0117] The first end of the microphone unit is connected to the first end of the audio amplification unit, the second end of the audio amplification unit is connected to the first end of the digital processing unit, and the second end of the digital processing unit is connected to the eighth end of the first control chip.

[0118] The operational amplifier unit includes a low-noise operational amplifier of model NJM4580. The first terminal of the operational amplifier unit is connected to the third terminal of the digital processing unit, and the second terminal of the operational amplifier unit is connected to the third terminal of the first power amplifier unit.

[0119] Specifically, the human voice signal captured by the microphone unit first enters the audio amplification unit (LVM321), and after gain amplification, it is transmitted to the digital processing unit (AMP1821) through the second terminal. The AMP1821 performs A / D conversion and other processing on the input signal, and the processed digital signal is sent to the eighth terminal (audio data receiving terminal) of the first control chip (EW7800) through the second terminal. On the other hand, the third terminal of the digital processing unit converts the noise-reduced digital signal into an analog signal, which is input to the operational amplifier unit (NJM4580) for secondary amplification to meet the input requirements of the first power amplifier unit (UTC7265). Finally, the first power amplifier unit drives the first speaker unit to play the human voice.

[0120] Furthermore, referring to Figure 5 , Figure 5 This is a schematic block diagram of the second audio processing module provided in the embodiments of this application, combined with... Figure 5 It can be seen that the second audio processing module includes a second sound effect unit, a second power amplifier unit, and a second speaker unit;

[0121] The second audio unit includes an audio processing chip of model PT2313;

[0122] The first end of the second sound effect unit is connected to the third end of the signal integration unit, the second end of the second sound effect unit is connected to the third end of the audio switch unit, and the third end of the second sound effect unit is connected to the sixth end of the second control chip.

[0123] The second power amplifier unit includes a power amplifier of model UTC7265;

[0124] The first end of the second power amplifier unit is connected to the fourth end of the second sound effect unit, and the second end of the second power amplifier unit is connected to the first end of the second speaker unit.

[0125] Specifically, the second audio unit (PT2313) integrates the audio source and control via a three-way interface: the first end receives the FM broadcast signal from the signal integration unit, the second end connects to a specific audio source selected by the audio switch unit, and the third end receives instructions from the second control chip (A7900). The audio signal processed by the PT2313 is transmitted to the second power amplifier unit (UTC7265) through the fourth end, amplified to the drive power, and then drives the second speaker unit to achieve audio output in the driver's area.

[0126] Secondly, this application provides an in-vehicle entertainment system for a passenger vehicle, which is equipped with the aforementioned in-vehicle entertainment system for a passenger vehicle.

[0127] The above is a detailed description of the preferred embodiments of this application. However, the invention of this application is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A vehicle-mounted driver and passenger entertainment integrated system, characterized in that, The system includes: a control area, a driver's area, and a passenger area; The control area includes an audio control module and a display control module; the passenger area includes a first display module, a microphone module and a first audio processing module; and the driver area includes a second audio processing module. The first end of the display control module is connected to the first end of the first display module, and the second end of the display control module is connected to the first end of the audio control module, for decoding and outputting video signals to the first display module in the passenger area; The first end of the microphone module is connected to the first end of the first audio processing module, and the second end of the first audio processing module is connected to the second end of the audio control module, for executing the audio output of the passenger area through microphone input or audio control. The first end of the second audio processing module is connected to the third end of the audio control module, and is used to execute the audio output of the driver area through audio control.

2. The in-vehicle entertainment system for passengers and drivers of a bus according to claim 1, characterized in that, The display control module includes a first storage unit, a status display unit, an output processing unit, a second storage unit, a broadcast receiving unit, and a first control unit; the first control unit is a first control chip, and the model of the first control chip is EW7800; The first terminal of the first control chip is connected to the first terminal of the first storage unit; The second end of the first control chip is connected to the first end of the status display unit; The third terminal of the first control chip is connected to the first terminal of the output processing unit, and the second terminal of the output processing unit is connected to the first terminal of the first display module. The fourth terminal of the first control chip is connected to the first terminal of the second storage unit; The fifth terminal of the first control chip is connected to the first terminal of the broadcast receiving unit, and the second terminal of the broadcast receiving unit is provided with a broadcast receiving antenna; The sixth and seventh terminals of the first control chip are connected to the audio control module. The sixth terminal of the first control chip is a communication terminal, and the seventh terminal of the first control chip is a digital-to-analog converter decoding terminal.

3. The in-vehicle entertainment system for passengers and drivers of a bus according to claim 2, characterized in that, The output processing unit includes a signal conversion chip of model LT2611, and the first display module is an HDMI interactive screen; The first end of the signal conversion chip is connected to the third end of the first control chip, and the second end of the signal conversion chip is connected to the interactive end of the HDMI interactive screen.

4. The in-vehicle entertainment system for passengers and drivers of a bus according to claim 2, characterized in that, The first storage unit includes a USB flash drive and / or a TF card.

5. The in-vehicle entertainment system for drivers and passengers of a bus according to claim 2, characterized in that, The audio control module includes a second control chip, a CAN unit, a signal integration unit, a digital-to-analog converter unit, and an audio switch unit; the second control chip is a chip integrating a microcontroller and Bluetooth, and the model of the second control chip is A7900; The first terminal of the second control chip is connected to the first terminal of the CAN unit; The second terminal of the second control chip is connected to the second terminal of the microphone module; The third terminal of the second control chip is connected to the sixth terminal of the first control chip, the seventh terminal of the first control chip is connected to the first terminal of the digital-to-analog converter, the second terminal of the digital-to-analog converter is connected to the first terminal of the audio switch unit, and the second terminal of the audio switch unit is connected to the fourth terminal of the second control chip. The fifth terminal of the second control chip is connected to the first terminal of the signal integration unit, and the second terminal of the signal integration unit is provided with an FM antenna; The second control chip is connected to the second end of the first audio processing module or the first end of the second audio processing module through an output port. The output port includes the third end of the audio switch unit, the third end of the signal integration unit, and the sixth end of the second control chip. The seventh terminal of the second control chip is equipped with a Bluetooth antenna.

6. The in-vehicle entertainment system for drivers and passengers of a bus according to claim 5, characterized in that, The fourth terminal of the audio switch unit is connected to the third terminal of the broadcast receiver unit; The fifth terminal of the audio switch unit is connected to an external auxiliary audio source.

7. The in-vehicle entertainment system for passengers and drivers according to claim 5, characterized in that, The first audio processing module includes a first sound effect unit, a first power amplifier unit, and a first speaker unit; The first audio unit includes an audio processing chip of model PT2313; The first end of the first sound effect unit is connected to the third end of the signal integration unit, the second end of the first sound effect unit is connected to the third end of the audio switch unit, and the third end of the first sound effect unit is connected to the sixth end of the second control chip. The first power amplifier unit includes a power amplifier of model UTC7265; The first end of the first power amplifier unit is connected to the fourth end of the first sound effect unit, and the second end of the first power amplifier unit is connected to the first end of the first speaker unit.

8. The in-vehicle entertainment system for passengers and drivers according to claim 7, characterized in that, The microphone module includes an operational amplifier unit, a digital processing unit, an audio amplification unit, and a microphone unit; The audio amplification unit includes an LVM321 audio amplifier, and the digital processing unit includes an AMP1821 digital signal processor. The first end of the microphone unit is connected to the first end of the audio amplification unit, the second end of the audio amplification unit is connected to the first end of the digital processing unit, and the second end of the digital processing unit is connected to the eighth end of the first control chip. The operational amplifier unit includes a low-noise operational amplifier of model NJM4580. The first terminal of the operational amplifier unit is connected to the third terminal of the digital processing unit, and the second terminal of the operational amplifier unit is connected to the third terminal of the first power amplifier unit.

9. The in-vehicle entertainment system for drivers and passengers of a bus according to claim 5, characterized in that, The second audio processing module includes a second sound effect unit, a second power amplifier unit, and a second speaker unit; The second audio unit includes an audio processing chip of model PT2313; The first end of the second sound effect unit is connected to the third end of the signal integration unit, the second end of the second sound effect unit is connected to the third end of the audio switch unit, and the third end of the second sound effect unit is connected to the sixth end of the second control chip. The second power amplifier unit includes a power amplifier of model UTC7265; The first end of the second power amplifier unit is connected to the fourth end of the second sound effect unit, and the second end of the second power amplifier unit is connected to the first end of the second speaker unit.

10. An integrated in-vehicle entertainment system for passengers and drivers of a bus, characterized in that, An in-vehicle driver and passenger entertainment system for a bus as described in any one of claims 1-9.

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