On-board KTV system and vehicle

Abstract

An on-board KTV system and a vehicle. The system comprises a primary screen (110), a secondary screen (210), a primary controller (120), a primary audio processor (150), and a secondary controller (220), wherein the primary screen (110) is connected to the primary controller (120), the secondary screen (210) is connected to the secondary controller (220), the primary controller (120) and the secondary controller (220) are respectively connected to the primary audio processor (150), and the primary audio processor (150) is used for mixing an accompaniment signal, which is output from one of the primary controller (120) and the secondary controller (220), with a human voice signal, so as to obtain a karaoke audio signal. By means of the on-board KTV system and the vehicle, the interactivity and entertainment of the on-board KTV system are improved, the usage scenarios of the on-board KTV system are expanded, and the usage frequency of the on-board KTV system is improved.

Description

Car-mounted KTV system and vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 19, 2023, with application number 2023112157864 and invention name “A Car-mounted KTV System and Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of audio-visual equipment, and in particular to a vehicle-mounted KTV system and a vehicle. Background Art

[0003] Existing in-car KTV systems can usually only play accompaniment on the main screen, adjust the volume of karaoke, set sound effects, etc. The front passenger, back seat passengers and other passengers in the car do not have the initiative to control the karaoke, and user interaction is not user-friendly enough.

[0004] Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] The present invention provides a car KTV system, characterized in that it includes a main screen, a sub-screen, a main controller, a main audio processor and a sub-controller, wherein the main screen is connected to the main controller, the sub-screen is connected to the sub-controller, and the main controller and the sub-controller are respectively connected to the main audio processor:

[0007] The main audio processor is used to mix the accompaniment signal output by one of the main controller and the sub-controller with the human voice signal to obtain a karaoke audio signal.

[0008] Exemplarily, the in-vehicle KTV system further includes a main speaker, which is connected to the main audio processor, and the karaoke audio signal output by the main audio processor is played through the main speaker.

[0009] Exemplarily, the in-vehicle KTV system further includes a switch and an auxiliary speaker, wherein a first end of the switch is connected to the sub-controller, and a second end of the switch is connected to the main audio processor or the auxiliary speaker:

[0010] When the switch is connected to the main audio processor, the accompaniment signal output by one of the main controller and the sub-controller, the interactive signal output by each of the main controller and the sub-controller, and the human voice signal are mixed to obtain a karaoke audio signal;

[0011] When the switch is connected to the auxiliary speaker, the audio signal output by the main controller is played through the main speaker after being processed by the main audio processor, and the audio signal output by the sub-controller is played through the auxiliary speaker.

[0012] Exemplarily, the in-vehicle KTV system further includes a microphone and an earphone, both of which are used to receive the human voice signal, the microphone is connected to the main controller, and the earphone is connected to the sub-controller.

[0013] Exemplarily, the in-vehicle KTV system further includes a secondary audio processor, which is connected to the secondary controller and the main audio processor respectively.

[0014] Exemplarily, when the vehicle stops, the switch is connected to the main audio processor, and when the vehicle is moving, the switch is automatically disconnected from the main audio processor.

[0015] Exemplarily, the secondary screen includes a passenger screen and one or more rear screens, and the passenger screen and the one or more rear screens are connected to the secondary controller; the secondary controller includes a passenger controller and a rear controller, the passenger screen is connected to the passenger controller, and the one or more rear screens are connected to the rear controller.

[0016] Exemplarily, the two ends of the secondary audio processor are respectively connected to the passenger controller and the main audio processor; the two ends of the switch are respectively connected to the rear controller and the main audio processor.

[0017] Exemplarily, both the main screen and the sub-screen are touch screens, configured to receive user instructions and output display results.

[0018] The present invention also provides a vehicle comprising any of the above-mentioned vehicle-mounted KTV systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings of the present invention are incorporated herein as part of the present invention for understanding the present invention. The drawings show embodiments of the present invention and the description thereof is used to explain the principle of the present invention.

[0020] In the attached figure:

[0021] FIG1 is a schematic structural diagram of a vehicle-mounted KTV system according to an embodiment of the present invention;

[0022] FIG2 is a schematic structural diagram of a vehicle-mounted KTV system according to an embodiment of the present invention;

[0023] FIG3 is an interconnected audio control diagram of a car KTV system according to an embodiment of the present invention;

[0024] FIG4 is a flow diagram of interconnected audio data of a vehicle-mounted KTV system according to an embodiment of the present invention;

[0025] FIG5 is a diagram showing an accompaniment playback control system of a car KTV system according to an embodiment of the present invention;

[0026] FIG6 is a diagram showing a rear row karaoke playback control system of a car KTV system according to an embodiment of the present invention;

[0027] FIG7 is a software flow chart of a vehicle KTV system according to an embodiment of the present invention;

[0028] FIG8 is an interactive message diagram of the in-vehicle KTV system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0030] It should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make the disclosure thorough and complete and to fully convey the scope of the invention to those skilled in the art. In the drawings, the dimensions and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals throughout represent like elements.

[0031] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0032] In order to fully understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solutions proposed by the present invention. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0033] The present invention provides a car KTV system, as shown in FIG1 , comprising a main screen 110, a sub-screen 210, a main controller 120, a main audio processor 150, and a sub-controller 220, wherein the main screen 110 is connected to the main controller 120, the sub-screen 210 is connected to the sub-controller 220, and the main controller 120 and the sub-controller 220 are respectively connected to the main audio processor 150:

[0034] The main audio processor 150 is used to mix the accompaniment signal output by one of the main controller 120 and the sub-controller 220 with the human voice signal to obtain a karaoke audio signal.

[0035] Exemplarily, the vehicle-mounted KTV system further includes a vehicle-mounted microphone 130 . Preferably, the vehicle-mounted KTV system includes a vehicle-mounted wireless microphone and receiver.

[0036] The vehicle-mounted microphone 130 includes a sound pickup component and a control circuit. The vehicle-mounted microphone 130 includes but is not limited to a dynamic microphone, a condenser microphone, a micro-electromechanical microphone, etc. The dynamic microphone also includes components such as a coil, a diaphragm, and a permanent magnet. When a sound wave enters the microphone, the diaphragm vibrates due to the pressure of the sound wave, and the coil connected to the diaphragm begins to move in the magnetic field, generating an induced current. The condenser microphone also includes components such as a vibrating membrane and a capacitor. When a sound wave enters the microphone, the vibrating membrane vibrates. Because the substrate is fixed, the distance between the vibrating membrane and the substrate changes, that is, the capacitance changes, and then the voltage changes. The micro-electromechanical microphone also includes a micro-electromechanical (MEMS) component, in which a pressure-sensing membrane is directly etched on a silicon wafer using micro-electromechanical technology. When a sound wave enters the microphone, the pressure-sensing membrane vibrates, and changes in capacitance and voltage are generated between the membrane and the silicon wafer.

[0037] In one embodiment, the vehicle-mounted microphone 130 is a wired microphone, and the connection between the vehicle-mounted microphone 130 and the controller 102 or the sub-controller 220 is achieved by inserting a connecting wire into the interface of the main controller 120 or the sub-controller 220, thereby transmitting the sound information obtained by the vehicle-mounted microphone 130 to the controller 102 or the sub-controller 220.

[0038] In one embodiment, the vehicle-mounted microphone 130 is a wireless microphone, and the vehicle-mounted KTV system also includes a receiver 131, which is pluggable and connected to the main controller 120 or the sub-controller 220. When the receiver is connected to the main controller 120, the receiver communicates with the wireless microphone to obtain sound information and sends the sound information to the main controller 120. When the receiver is connected to the sub-controller 220, the receiver communicates with the wireless microphone to obtain sound information and sends the sound information to the sub-controller 220.

[0039] Exemplarily, both the main screen 110 and the sub-screen 210 are touch screens, configured to receive user instructions and output display results.

[0040] In one embodiment, as shown in Figure 2, the sub-screen 210 includes a co-pilot screen 211 and one or more rear screens 212, and the co-pilot screen 211 and the one or more rear screens 212 are connected to the sub-controller 220; further, the sub-controller 220 includes a co-pilot controller 221 and a rear controller 222, and the co-pilot screen 211 is connected to the co-pilot controller 221, and the one or more rear screens 212 are connected to the rear controller 222.

[0041] In one embodiment, a main screen 110 is located in front of the driver's seat, and the driver can interact with the main screen 110. A passenger screen 211 is located in front of the passenger seat, and the passenger can interact with the passenger screen 211. A rear screen 212 is located in front of the rear seat, and the rear passenger can interact with the rear screen 212. The driver and passenger can select songs on the main screen 110, passenger screen 211, or rear screen 212, respectively, set system volume, reverberation, sound effects, and other parameters, output accompaniment signals through corresponding controllers connected to the screens, perform commentary operations (such as playing sounds and effects such as applause, cheers, and scattering flowers), and output interactive signals through corresponding controllers connected to the screens. The main audio processor 150 receives the human voice signal from the vehicle microphone 130, the accompaniment signal output from one of the main controller 120 and the sub-controller 220, and the interactive signal output from each of the main controller 120 and the sub-controller 220, and mixes them to generate a karaoke audio signal.

[0042] Exemplarily, the in-vehicle KTV system further includes an audio processor (DSP). The audio processor includes a main audio processor and a secondary audio processor, wherein the main audio processor is connected to the main controller, the secondary audio processor is connected to the secondary controller, and the main audio processor and the secondary audio processor are connected so that the secondary controller is connected to the main controller.

[0043] In one embodiment, the audio processor is typically located between the controller and the speakers to enhance sound quality, implement special sound effects such as enhanced surround sound, and perform certain modifications to the audio signal. While the DSP amplifier has other amplifier functions, it can also attenuate overlapping frequencies caused by the in-car environment, add frequencies attenuated by the environment, and adjust the distance between each speaker in the car and the human ear.

[0044] In one embodiment, as shown in FIG2 , the audio processor includes a main audio processor 150 and a passenger audio processor 250. The main audio processor 150 is connected to the main controller 120 for processing the audio signal output by the main controller 120. The passenger audio processor 250 is connected to the passenger controller 221 for processing the audio signal output by the passenger controller 221. Furthermore, the passenger audio processor 250 is connected to the main audio processor 150, so that the audio signal output by the passenger controller 221 can be processed and then transmitted to the main audio processor 150. The main audio processor 150 can be used to process the audio signal output by the main controller 120 and the processed audio signal from the passenger audio processor 250. In addition, a rear audio processor connected to the rear controller 222 can be provided, or, for cost-saving considerations, a DSP rear audio processor connected to the rear controller 222 can be omitted. This application does not impose any restrictions on this.

[0045] Exemplarily, the vehicle KTV system further includes a power amplifier (PA). The power amplifier includes a main power amplifier and a secondary power amplifier, wherein the main power amplifier is connected to the main audio processor, and the secondary power amplifier is connected to the secondary controller or the secondary audio processor.

[0046] In one embodiment, the circuit generally includes multiple amplifier circuits. In addition to the pre-amplifier circuit that amplifies the voltage of small signals, its output stage generally needs to drive certain loads, such as speakers, relays, motors, instruments, deflection coils, etc. Driving these loads requires a certain amount of power, so a power amplifier circuit that can amplify the signal is needed.

[0047] In one embodiment, as shown in FIG2 , the power amplifier includes a main power amplifier 160 and a rear-row power amplifier 260. The main power amplifier 160 is connected to the main audio processor 150 and is used to amplify the audio signal output by the main audio processor 150. The audio signal output by the main audio processor 150 is amplified by the amplifier and drives the speaker to play. The rear-row power amplifier 260 is connected to the rear-row controller 222 and is used to amplify the audio signal output by the rear-row controller 222. Furthermore, when the rear-row power amplifier 260 is connected to the main audio processor 150 via a switching switch, the audio signal amplified by the rear-row power amplifier 260 can be transmitted to the main audio processor 150. The main audio processor 150 can be used to process the audio signal output by the main controller 120, the processed audio signal from the audio signal processor 250, and the amplified audio signal from the rear-row power amplifier 260 to generate mixed audio. The main power amplifier 160 amplifies the mixed audio.

[0048] Exemplarily, the in-vehicle KTV system also includes a switching switch 230, a first end of the switching switch 230 is connected to the sub-controller 220, and a second end of the switching switch 230 is connected to the main audio processor 150 or the auxiliary speaker 240: when the switching switch 230 is connected to the main audio processor 150, the accompaniment signal output by one of the main controller 120 and the sub-controller 220, and the interactive signal output by each of the main controller 120 and the sub-controller 220 are mixed with the human voice signal to obtain a K song audio signal; when the switching switch 230 is connected to the auxiliary speaker, the audio signal output by the main controller 120 is processed by the main audio processor 150 and played through the main speaker 140, and the audio signal output by the sub-controller 220 is played through the auxiliary speaker 240.

[0049] In one embodiment, as shown in Figure 2, the first end of the switching switch 230 is connected to the rear row power amplifier 260, and the second end is connected to the main audio processor 150 or the auxiliary speaker 240. When the switching switch 230 is connected to the main audio processor 150, the accompaniment signal from the main controller 120 or one of the amplified accompaniment signals of the rear row power amplifier 260, and each of the interactive signal from the main controller 120 or the interactive signal of the rear row power amplifier 260 are mixed with the vocal signal in the main power amplifier 160; when the switching switch 230 is connected to the auxiliary speaker 240, the amplified audio signal from the rear row power amplifier 260 is played directly by the auxiliary speaker 240.

[0050] For example, the in-vehicle KTV system further includes a main speaker 140 and an auxiliary speaker 240. The main speaker 140 is connected to the main audio processor 150, and the audio signal output by the audio processor 150 is played through the main speaker 140. The auxiliary speaker 240 is connected to the sub-controller 220, and the audio signal output by the sub-controller 220 is played through the main speaker 140 or the auxiliary speaker 240.

[0051] In one embodiment, as shown in Figure 2, the main speaker 140 is connected to the main power amplifier 160, and the audio signal from the main controller 120 is processed in sequence by the main audio processor 150 and the main power amplifier 160, and is always played by the main speaker 140; the audio signal from the passenger controller 221 is processed in sequence by the passenger audio processor 250, the main audio processor 150 and the main power amplifier 160, and is always played by the main speaker 140; when the switching switch 230 is connected to the main audio processor 150, the audio signal from the rear controller 222 is processed in sequence by the rear power amplifier 260, the main audio processor 150 and the main power amplifier 160, and is played by the main speaker 140.

[0052] In one embodiment, as shown in FIG. 2 , when the switch 230 is connected to the rear row controller 222 , the audio signal from the rear row controller 222 is processed by the rear row power amplifier 260 and then played by the auxiliary speaker 240 .

[0053] In one embodiment, as shown in Figure 2, when the earphone 270 is connected to the rear controller 222 via the interface, the earphone 270 can function as a microphone and / or a speaker. The earphone 270 can include a wired earphone or a wireless earphone, preferably, the earphone is a 3.5mm wired earphone.

[0054] For example, when the vehicle stops, the switch 230 is connected to the main audio processor 150 ; when the vehicle is moving, the switch 230 is automatically disconnected from the main audio processor 150 .

[0055] In one embodiment, when the vehicle is stopped, all passengers in the vehicle can sing karaoke together, as shown in FIG2 . At this time, the second end of the switch 230 is connected to the main audio processor 150. The human voice signal from the vehicle microphone 130, the accompaniment signal from one of the main controller 120 and the sub-controller 220, and the interactive signal from each of the main controller 120 and the sub-controller 220 are mixed to generate a karaoke audio signal played by the main speaker 140. When the vehicle is moving, in the embodiment shown in FIG2 , the driver can use the main controller for navigation and other functions while driving, and the navigation audio is played by the main speaker. At this time, only rear passengers can participate in karaoke, and neither the driver nor the front passenger can participate. At this time, the second end of the switch 230 is connected to the auxiliary speaker, and the human voice signal, accompaniment signal, and interactive signal from the rear seat are played by any of the auxiliary speakers.

[0056] In one embodiment, the various components of the vehicle-mounted KTV system can be connected via a CAN bus, and some components can also be connected via WIFI, Bluetooth, Ethernet, etc., which is not limited in this application.

[0057] The in-vehicle KTV system provided by the present invention has expanded from the current single main screen karaoke system to support karaoke in the co-pilot and rear seats, sharing the car's power amplifier PA and sound system. When the entire car needs to sing karaoke, the microphone voice is received by the receiver connected to the main controller, and is looped back with low latency to the main audio processor and played by the main speaker.

[0058] In one embodiment, the driver, passenger, and rear seats can each have a separate karaoke app installed on their respective screens. Each seat can open the karaoke app on their respective screens to play accompaniment. When the vehicle is stopped, the accompaniment music for all seats is sent to the main audio processor, where it is mixed with the microphone and vocals, and the audio strategy is uniformly controlled by the main audio processor.

[0059] In one embodiment, the Karaoke APPs installed on different screens include their own software ZMQ message queue service threads, which can be started when the system is turned on. The main controller directly sends interactive messages to the passenger controller / rear row controller, or receives interactive messages sent from the passenger controller / rear row controller. The interactive messages between the passenger controller and the rear row controller are transferred through the main driver controller. The Karaoke Apps on all controllers send interactive messages according to the status of the Karaoke ICON on the corresponding controller, or respond to corresponding dynamic and sound effect instructions after receiving interactive messages, so as to realize interactive Karaoke between passengers in different seats.

[0060] In one embodiment, as shown in Figure 3, when the passenger controller plays the accompaniment, the passenger controller notifies the passenger MCU to send a 0x002 message in the CAN bus. When the rear controller uses the main speaker to play the accompaniment, the rear controller notifies the rear MCU to send a 0x003 message in the CAN bus, notifying the main MCU through the message which controller currently needs to apply to play the accompaniment.

[0061] In one embodiment, as shown in FIG4 , the main controller and the main audio processor are connected within the same controller for short distances via the I2S / TDM bus to transmit data, and the co-pilot DSP and the main DSP are connected for long distances via the A2B bus to transmit audio data. The analog signal audio data output by the CODEC inside the rear controller is amplified by the built-in PA and then connected to a switch. The switch has two output ports, one connected to the built-in speaker and the other connected to the AUX interface of the main DSP. The switch is connected to the built-in speaker by default. Although different seats can operate the corresponding seat screen to open the karaoke APP, when the karaoke APP opened later plays the accompaniment sound, the CAN message synchronization state of FIG3 is used to interrupt the main audio processor sound path used by the karaoke APP opened on other screens, achieving mutual exclusion, and the karaoke APP opened later obtains the control right of the karaoke accompaniment playback path.

[0062] In one embodiment, as shown in FIG5 , when the main MCU does not receive the 0x002 and 0x003 messages, it controls the main DSP to play the accompaniment audio data of the karaoke APP on the main controller. When the main MCU receives the 0x002 message from the CAN bus, it controls the DSP to play the accompaniment audio data of the karaoke APP on the co-pilot. When it receives the 0x003 message, it controls the DSP to play the accompaniment audio data of the karaoke APP played by the rear row controller. The external DSP selects the accompaniment audio data of different controllers according to the different instructions received from the main controller, mixes them with the human voice audio data received by the microphone receiver connected to the main controller, and then sends them to the vehicle PA for the main speaker to play out the sound. For example, if the MCU of the main controller receives the 0x002 message, it means that the co-pilot has initiated the karaoke accompaniment playback. At this time, the MCU of the main controller controls the external DSP to select the accompaniment audio data sent by the co-pilot controller, mix it with the microphone human voice, and enable the co-pilot controller to use the main speaker to sing karaoke. After the rear-seat controller's accompaniment sound is amplified by the rear PA, one channel is sent to the main audio processor via the AUX interface, and another channel is sent to the rear-seat built-in speakers. When the rear-seat controller needs to use the main speakers for accompaniment, the main MCU is notified via the 0x003 message to control the main audio processor, mixing the rear-seat accompaniment with the main voice, allowing karaoke to be played using the main speakers.

[0063] In one embodiment, as shown in Figure 6, whether the rear-seat controller plays accompaniment via "whole-vehicle audio" is selected through a software setting within the rear-seat controller. When the rear-seat passenger selects "whole-vehicle audio," the rear-seat controller controls the physical audio path switch to connect to the main DSP, sending the rear-seat audio data to the main DSP. When the rear-seat passenger selects the software setting "built-in speaker audio," the accompaniment audio data played by the rear-seat controller is routed from the switch to the built-in speakers of the rear-seat controller for playback.

[0064] Professional karaoke microphone equipment sends vocal data wirelessly to the microphone receiver on the main controller, which implements low-latency loopback playback of karaoke vocals on the main controller. The rear controller cannot obtain the vocals from the receiver connected to the main controller. If the main controller is navigating, the main speaker is occupied by the navigation for playback. When the rear passengers need karaoke at this time, they can choose to switch audio channels through software settings. The vocals on the headphone mic connected to the 3.5mm headphone jack of the rear controller are recorded, and the rear controller mixes the vocals recorded by the headphone mic with the accompaniment sound played by the karaoke APP of the rear controller. At this time, the rear controller can use the built-in speakers or headphones of the rear controller without relying on the main speaker, so that the rear passengers can use the rear controller ear return and accompaniment mixing to play independent karaoke. At this time, the sound in the rear row is completely isolated from the driver and co-driver, and the driver and co-driver can still start karaoke and use the main speaker for karaoke.

[0065] When the built-in speakers are selected for playback in the back row, a zmq message using the built-in speakers is sent to the main controller and the co-pilot controller through the karaoke applet on the back row controller. The karaoke applet of the main controller and the co-pilot controller records the received zmq message and notifies the main controller to restrict karaoke. In another embodiment, a 0x004 message is also added, and the back row controller sends a 0x004 message to notify the main MCU to control the main DSP not to play the karaoke sound of the main controller or the co-pilot controller. In another embodiment, the speakers in different positions correspond to different channels of the multi-channel data processed by the main DSP, and can send a message to notify the main MCU. The main MCU controls the main audio processor to only play the corresponding channel, that is, the speakers in the front row or co-pilot position can be selected to play sound.

[0066] In one embodiment, as shown in Figure 7, the main controller, passenger seat controller, and rear seat controller each have an adapted karaoke mini-program. The main controller's karaoke mini-program monitors the karaoke microphone's connection status and activates a loopback playback path for karaoke vocals. When a karaoke app's accompanying music is detected, a karaoke interactive icon pops up, and the sound is controlled through the main speaker using the method shown in Figure 5. After powering on, the passenger seat and rear seat controllers launch the karaoke mini-program in the background to monitor whether the passenger seat has a karaoke app open for accompanying music. If a karaoke app's accompanying music is detected, the karaoke interactive icon also pops up. Simultaneously, when the karaoke interactive icon is clicked on all screen terminals, sounds and animations such as applause, scattering flowers, and cheering can be synchronized to all screens. Physically, the passenger seat and rear seat controllers are connected to the main controller via Wi-Fi or Ethernet. Software-wise, karaoke between the different controllers is achieved through ZMQ communication. ZMQ is a message queue that can transmit data as messages within processes, between processes, TCP, and multicast.

[0067] In one embodiment, as shown in Figure 8, inter-ZMQ communication is bidirectional. Each ZMQ sent and received by ZMQ has a corresponding message ID, abbreviated as ZMQ1, ZMQ2, ZMQ3, and ZMQ4 in Figure 8. Each ZMQ ID can transmit different messages. After the software system boots up, the controller automatically launches its own karaoke applet in the system background and starts a ZMQ message processing thread, such as Thread_ivi for the main thread, Thread_fse for the co-pilot thread, and Thread_rse for the rear thread. This monitors whether the controller has entered karaoke mode and whether it needs to send or receive ZMQ messages. When a controller first runs a karaoke app such as Kugou, it indicates that the controller has entered karaoke mode. When the controller's karaoke applet detects the entry into karaoke mode, it pops up the karaoke applet interactive icon and sends a ZMQ message. Upon receiving the ZMQ message, the other controllers also display the karaoke applet interactive icon. Therefore, when any controller enters karaoke mode, the karaoke interactive icon will appear on all screens. Passengers in different seats can click on the karaoke mini-programs connected to different screens, and click on the corresponding interactive icons on the interactive ICON to trigger the playback of animations and sounds such as likes, applause, and scattering flowers.

[0068] The present invention also provides a vehicle, comprising the vehicle-mounted KTV system as described above.

[0069] According to the in-vehicle KTV system and vehicle provided by the present invention, in addition to the main screen and the main controller, a sub-screen and a sub-controller are also provided. Passengers can order songs and comment on songs through the sub-screen. The main controller and the sub-controller are respectively connected to the main audio processor. The main audio processor is used to mix the accompaniment signal output by one of the main controller and the sub-controller with the human voice signal to obtain a karaoke audio signal, which increases the initiative of other passengers in controlling the in-vehicle KTV system and improves the interactivity and entertainment of the in-vehicle KTV system. When the sub-controller is not connected to the main audio processor, the audio signal of the main controller and the audio signal of the sub-controller are respectively output through the main speaker and the sub-speaker. In this way, during the driving of the vehicle, the main screen and the main controller can be used for operations such as navigation, and the sub-screen and sub-controller can be used for karaoke, which expands the use scenarios of the in-vehicle KTV system and increases the frequency of use of the in-vehicle KTV system.

[0070] The present invention has been described through the above-described embodiments. However, it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A car-mounted KTV system, characterized in that: The invention comprises a main screen (110), a sub-screen (210), a main controller (120), a main audio processor (150) and a sub-controller (220), wherein the main screen is connected to the main controller, the sub-screen is connected to the sub-controller, and the main controller and the sub-controller are respectively connected to the main audio processor: The main audio processor is used to mix the accompaniment signal output by one of the main controller and the sub-controller with the vocal signal to obtain a karaoke audio signal.

2. The vehicle-mounted KTV system according to claim 1, characterized in that: It also includes a main speaker (140), which is connected to the main audio processor, and the karaoke audio signal output by the main audio processor is played through the main speaker.

3. The vehicle-mounted KTV system according to claim 1 or 2, characterized in that: It also includes a switch (230) and an auxiliary speaker (240), wherein a first end of the switch is connected to the sub-controller, and a second end of the switch is connected to the main audio processor or the auxiliary speaker. When the switch is connected to the main audio processor, the accompaniment signal output by one of the main controller and the sub-controller, the interactive signal output by each of the main controller and the sub-controller, and the human voice signal are mixed to obtain a karaoke audio signal; When the switch is connected to the auxiliary speaker, the audio signal output by the main controller is played through the main speaker after being processed by the main audio processor, and the audio signal output by the sub-controller is played through the auxiliary speaker.

4. The vehicle-mounted KTV system according to any one of claims 1 to 3, characterized in that: It also includes a microphone (130) and an earphone (270), both of which are used to receive the human voice signal, the microphone is connected to the main controller, and the earphone is connected to the sub-controller.

5. The vehicle-mounted KTV system according to any one of claims 1 to 3, characterized in that: It also includes a sub-audio processor (250), which is connected to the sub-controller and the main audio processor respectively.

6. The vehicle-mounted KTV system according to any one of claims 1 to 5, characterized in that: When the vehicle stops, the switch is connected to the main audio processor, and when the vehicle is moving, the switch is automatically disconnected from the main audio processor.

7. The vehicle-mounted KTV system according to any one of claims 1 to 6, characterized in that: The sub-screen (210) includes a co-pilot screen (211) and one or more rear screens (212), and the co-pilot screen and the one or more rear screens are connected to the sub-controller; the sub-controller (220) includes a co-pilot controller (221) and a rear controller (222), and the co-pilot screen is connected to the co-pilot controller, and the one or more rear screens are connected to the rear controller.

8. The vehicle-mounted KTV system according to any one of claims 1 to 7, characterized in that: The two ends of the auxiliary audio processor are respectively connected to the passenger controller and the main audio processor; the two ends of the switching switch are respectively connected to the rear controller and the main audio processor.

9. The vehicle-mounted KTV system according to any one of claims 1 to 8, characterized in that: The main screen and the sub-screen are both touch screens, which are used to receive user instructions and output display results.

10. A vehicle, characterized in that: The invention comprises the vehicle-mounted KTV system according to any one of claims 1 to 9.

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