Intelligent sound box

Abstract

A battery module supplies power to an audio playing circuit, the audio playing circuit supplies power to a video playing circuit, the audio playing circuit can control the video playing circuit to be turned on only when working in a video playing mode, otherwise, the audio playing circuit controls the video playing circuit to be in a standby state, so that the power consumption is reduced, and in addition, the power consumption is reduced. The video playing circuit is provided with a tuner and a video data receiving port, and the video playing circuit not only can receive off-line video data through the video data receiving port and play the off-line video data, but also can receive digital television broadcasting signals through the tuner and play real-time video data. According to different working modes, the video playing circuit is selectively controlled to be started, so that the power consumption of the video playing circuit is reduced, the running time of the intelligent sound box is prolonged, offline video data and real-time video data can be played, the functional range of the intelligent sound box is expanded, and the applicability of the intelligent sound box in different scenes is improved.

Description

Technical Field

[0001] The present invention relates to the field of speaker control, and in particular to a smart speaker. Background Art

[0002] In outdoor scenarios, the power supply of smart speakers is unstable. Without an external power supply, the smart speakers cannot operate for a long time. In addition, smart speakers in the existing technology can only play pre-stored audio or video, and their usage scenarios are limited. Summary of the Invention

[0003] The purpose of the present invention is to provide a smart speaker that selectively controls the power-on of a video playback circuit according to different working modes, thereby reducing the power consumption of the video playback circuit and increasing the operating time of the smart speaker. It can also play both offline and real-time video data, thereby expanding the functional range of the smart speaker and improving the applicability of the smart speaker in different scenarios.

[0004] To solve the above technical problems, the present invention provides a smart speaker, including a battery module, an audio playback circuit, and a video playback circuit;

[0005] The battery module is used to supply power to the audio playback circuit;

[0006] The audio playback circuit is used to play received audio data, power the video playback circuit based on the output voltage of the battery module, and send a power-on command to the video playback circuit when working in a video playback mode, and otherwise send a standby command to the video playback circuit;

[0007] The video playback circuit is configured with a tuner and a video data receiving port, and is used to receive a digital TV broadcast signal and obtain video data through the tuner when receiving the power-on command, or receive video data through the video data receiving port, play the video screen based on the video data, and send the audio data in the video data to the audio playback circuit; and enter the standby state when receiving the standby command.

[0008] Preferably, the audio playback circuit includes an audio receiving module, an audio processor, a power conversion module, a power output module and an audio output module;

[0009] The audio receiving module is used to receive audio data output by the video playback circuit or audio data sent by an external device;

[0010] The audio processor is used to decode the audio data and then play the audio through the audio output module, and send a power-on instruction to the video playback circuit when working in the video playback mode, otherwise send a standby instruction to the video playback circuit;

[0011] The power conversion module is used to convert the output voltage of the battery module into power for the audio processor;

[0012] The power output module is used to supply power to the video playback circuit based on the output voltage of the battery module.

[0013] Preferably, the audio receiving module includes a combination of one or more of a wired audio receiving module, a Bluetooth module, an FM receiving module and a microphone receiving module;

[0014] The wired audio receiving module is used to receive the audio data output by the video playback circuit;

[0015] The Bluetooth module is used to convert the received Bluetooth signal into audio data;

[0016] The FM receiving module is used to receive radio signals and convert them into audio data;

[0017] The microphone receiving module is used to receive the voltage signal output by the microphone and convert it into audio data.

[0018] Preferably, the audio playback circuit also includes a mode switching button, which is used to receive a mode switching instruction and send the mode switching instruction to the audio processor, so that the audio processor sends a power-on instruction to the video playback circuit when it determines to operate in the video playback mode based on the mode switching instruction, otherwise it sends a standby instruction to the video playback circuit.

[0019] Preferably, the audio playback circuit further includes an AC to DC power supply board and / or a DC power supply interface, and a power control module;

[0020] The AC to DC power supply board is used to convert input alternating current into direct current to power the audio processor;

[0021] The DC power interface is used to power the audio processor based on the DC power input by the power adapter when connected to the power adapter;

[0022] The power control module is used to control the battery module to suspend output and control the AC to DC power board or the DC power interface to charge the battery module when the AC to DC power board is connected to AC power or the DC power interface is connected to the power adapter;

[0023] The power output module is further configured to supply power to the video playback circuit based on the output voltage of the AC to DC power supply board or the DC power interface.

[0024] Preferably, it also includes a power prompt module;

[0025] The power control module is further configured to obtain the remaining power of the battery module and control the power prompt module to issue a power prompt when the remaining power is not greater than a preset remaining power.

[0026] Preferably, the video playback circuit is further configured to feed back its own real-time status to the audio playback circuit when entering the standby mode.

[0027] Preferably, the video playback circuit includes a tuner, a video data receiving port, a main control chip, a video playback power supply circuit and a video playback module;

[0028] The video playback power supply circuit is used to convert the power supply voltage output by the audio playback circuit into voltage and then supply power to the main control chip and the video playback module;

[0029] The tuner is used to receive digital television broadcast signals and obtain video data;

[0030] The video data receiving port is used to receive video data;

[0031] The main control chip is used to decode the video data when receiving the power-on command, generate corresponding audio data and video playback data, send the audio data to the audio playback circuit, convert the video playback data into a video playback signal, and drive the video playback module to play the video screen based on the video playback signal; and enter the standby state when receiving the standby command.

[0032] Preferably, the video playback module includes a display screen, a display screen power supply module and a display screen backlight circuit;

[0033] The display screen power supply module is used to power the display screen based on the power supply voltage output by the video playback power supply circuit;

[0034] The display screen backlight circuit is used to provide backlight for the display screen based on the power supply voltage output by the video playback power supply circuit;

[0035] The main control chip is specifically used to control the display power supply module and the display backlight circuit to start up when receiving the power-on command, decode and process the video data, and generate corresponding audio data and video playback data, send the audio data to the audio playback circuit, convert the video playback data into a video playback signal, and drive the display screen to play the video screen based on the video playback signal; and control the display power supply module and the display backlight circuit to stop working when receiving the standby command.

[0036] Preferably, the video playback circuit further includes a signal conversion module; the display screen is an eDP screen;

[0037] The signal conversion module is used to convert the video playback signal into an eDP screen driving signal, and drive the display screen to play the video image based on the eDP screen driving signal.

[0038] The present application provides a smart speaker, in which a battery module supplies power to an audio playback circuit, which in turn supplies power to a video playback circuit. The audio playback circuit controls the video playback circuit to power on only when operating in video playback mode, otherwise it controls the video playback circuit to be in standby mode to reduce power consumption. Furthermore, the video playback circuit is configured with a tuner and a video data receiving port. The video playback circuit can not only receive and play offline video data through the video data receiving port, but can also receive digital television broadcast signals through the tuner and play real-time video data. Depending on the operating mode, the video playback circuit is selectively controlled to power on, thereby reducing power consumption of the video playback circuit and increasing the operating time of the smart speaker. Furthermore, both offline and real-time video data can be played, expanding the functional scope of the smart speaker and improving its applicability in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A schematic diagram of the structure of a smart speaker provided in this application;

[0041] Figure 2 A schematic diagram of the structure of an audio playback circuit provided in this application;

[0042] Figure 3 This is a structural diagram of a video playback circuit provided in this application. DETAILED DESCRIPTION

[0043] The core of the present invention is to provide a smart speaker that selectively controls the power-on of the video playback circuit according to different working modes, thereby reducing the power consumption of the video playback circuit and improving the operating time of the smart speaker. It can also play offline video data and real-time video data, expanding the functional range of the smart speaker and improving the applicability of the smart speaker in different scenarios.

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a smart speaker provided in this application, including a battery module 1, an audio playback circuit 2, and a video playback circuit 3;

[0046] The battery module 1 is used to supply power to the audio playback circuit 2;

[0047] The audio playback circuit 2 is used to play the received audio data, power the video playback circuit 3 based on the output voltage of the battery module 1, and send a power-on command to the video playback circuit 3 when working in the video playback mode, and otherwise send a standby command to the video playback circuit 3;

[0048] The video playback circuit 3 is configured with a tuner 31 and a video data receiving port 32, and is used to receive digital TV broadcast signals and obtain video data through the tuner 31 when a power-on command is received, or to receive video data through the video data receiving port 32, play video images based on the video data, and send audio data in the video data to the audio playback circuit 2; and enter the standby state when a standby command is received.

[0049] Existing smart speakers are mostly used outdoors. Consequently, their power supply is unstable. Without an external power source, they require a built-in battery to maintain operation. However, even with this, smart speakers cannot guarantee long-term operation. Furthermore, smart speakers can typically only play offline video or audio files, such as pre-stored ones. Therefore, their use cases are limited, and they cannot provide users with real-time video playback.

[0050] Based on this, the smart speaker in this application includes an audio playback circuit 2 and a video playback circuit 3. Therefore, the smart speaker can not only play audio data but also play video data. In addition, since the video playback circuit 3 is equipped with a tuner 31, the video player can receive digital TV broadcast signals through the tuner 31, thereby obtaining real-time video data, such as real-time news footage and real-time game footage broadcast by local stations. Even outdoors or in suburban environments, the smart speaker can play real-time video images for users. Of course, the video data receiving port 32 configured on the video playback circuit 3 can also receive offline video data input by the user, such as pre-downloaded movie or TV series video data. The video playback circuit 3 extracts the audio data from the video data and sends it to the audio playback circuit 2, thereby realizing the playback of the corresponding video images and audio data, thereby improving the user experience.

[0051] The tuner 31 may be, but is not limited to, an ATSC (Advanced Television Systems Committee, a national standard for digital television) tuner.

[0052] In addition, considering the power consumption issue, in some cases the smart speaker does not only work in the video playback mode, but sometimes also works in the audio playback mode. When it is not working in the video playback mode, the video playback circuit 3 is not needed to play the video screen. At this time, only the audio playback module is needed to play the audio data. For example, when only music needs to be played, the video screen is not needed to be played. At this time, the battery module 1 supplies power to the audio playback circuit 2, and the audio playback circuit 2 supplies power to the video playback circuit 3, and sends a standby instruction to the video playback circuit 3 to make the video playback circuit 3 enter the standby state, without playing the video screen, reducing the power consumption of the video playback circuit 3; and when working in the video playback mode, the video playback circuit 3 is needed to play the video screen. At this time, the audio playback circuit 2 sends a power-on instruction to the video playback circuit 3 to make the video playback circuit 3 play the video screen to meet the needs of users.

[0053] The video data receiving port 32 can be an HDMI (High Definition Multimedia Interface) and / or a USB (Universal Serial Bus). Therefore, the smart speaker supports the input of multiple video data. Among them, the USB interface can also provide 5V / 2A power output to external devices, thereby charging external devices such as mobile phones.

[0054] The video playback circuit 3 and the audio playback circuit 2 can interact with each other through a UART (Universal Asynchronous Receiver / Transmitter) communication interface to implement mode switching and status feedback of the video playback circuit 3.

[0055] In summary, in this application, the video playback circuit 3 is selectively controlled to start up according to different working modes, thereby reducing the power consumption of the video playback circuit 3, improving the operating time of the smart speaker, and being able to play offline video data and real-time video data, thereby expanding the functional range of the smart speaker and improving the applicability of the smart speaker in different scenarios.

[0056] Based on the above embodiment:

[0057] Please refer to Figure 2 and Figure 3 , Figure 2 This is a structural diagram of an audio playback circuit provided in this application. Figure 3 This is a structural diagram of a video playback circuit provided in this application.

[0058] As a preferred embodiment, the audio playback circuit 2 includes an audio receiving module, an audio processor 22, a power conversion module 23, a power output module 24 and an audio output module;

[0059] The audio receiving module is used to receive audio data output by the video playback circuit 3 or audio data sent by an external device;

[0060] The audio processor 22 is used to decode the audio data and play the audio through the audio output module, and send a power-on command to the video playback circuit 3 when working in the video playback mode, otherwise send a standby command to the video playback circuit 3;

[0061] The power conversion module 23 is used to convert the output voltage of the battery module 1 into power for the audio processor 22;

[0062] The power output module 24 is used to supply power to the video playback circuit 3 based on the output voltage of the battery module 1 .

[0063] The audio playback circuit 2 includes an audio receiving module, which can not only receive the audio data output by the video playback circuit 3 in the video playback mode, but also receive the audio data sent by the external device to cooperate with the video playback circuit 3 to play the audio data, or only play the audio data to meet the various needs of users.

[0064] In addition, the power conversion module 23 can convert the output voltage of the battery module 1 to power the audio processor 22. For example, when the output voltage of the battery module 1 is 12V and the operating voltage of the audio processor 22 is 3.3V, the power conversion module 23 can convert the 12V voltage into 3.3V DC power, thereby powering the audio processor 22 and ensuring the normal operation of the audio processor 22.

[0065] The power output module 24 can transmit the output voltage of the battery module 1 to the video playback circuit 3 to power the video playback circuit 3, so that the video playback circuit 3 can receive the power-on command or standby command sent by the audio processor 22, thereby entering the power-on state to play the video screen or entering the standby state to save power consumption.

[0066] The audio data output interface of the video playback circuit 3 may include an L channel interface and an R channel interface. L / R audio data is transmitted to the L / R channel pins of the audio processor 22 in the audio playback circuit 2 via the wired audio receiving module 211 of the audio playback circuit 2. The sound amplifier circuit 251 of the audio playback circuit 2 amplifies the L / R audio data and outputs it, driving the speakers to produce sound. The audio output module may, but is not limited to, include the sound amplifier circuit 251, a left speaker 252, and a right speaker 253. The left speaker 252 emits left channel audio data, and the right speaker 253 plays right channel audio data.

[0067] The audio processor 22 may be, but is not limited to, an MCU (Microcontroller Unit), and may be AP8264. The audio processor 22 is responsible for processing audio data, controlling mode switching, and communicating and interacting with the video playback circuit 3 .

[0068] As a preferred embodiment, the audio receiving module includes a combination of one or more of a wired audio receiving module 211 , a Bluetooth module 212 , an FM (frequency modulation) receiving module, and a microphone receiving module 213 ;

[0069] The wired audio receiving module 211 is used to receive the audio data output by the video playing circuit 3;

[0070] The Bluetooth module 212 is used to convert the received Bluetooth signal into audio data;

[0071] The FM receiving module is used to receive radio signals and convert them into audio data;

[0072] The microphone receiving module 213 is used to receive the voltage signal output by the microphone and convert it into audio data.

[0073] In this embodiment, the audio receiving module can not only be connected to the video playback circuit 3 through the wired audio receiving module 211 to receive the audio data output by the video playback circuit 3, and thus cooperate with the video playback circuit 3 to play the corresponding audio data; it can also receive the Bluetooth signal sent by the external device through the Bluetooth module 212, and convert the Bluetooth signal into audio data and transmit it to the audio processor 22; it can also receive the radio signal as a radio through the FM receiving module, and convert the radio signal into audio data and transmit it to the audio processor 22. In this way, the smart speaker can play real-time audio data; the audio receiving module can also be configured with a microphone receiving module 213 to receive the voltage signal output by the microphone, and convert the voltage signal into audio data and transmit it to the audio processor 22.

[0074] It should be noted that if the audio receiving module includes all the modules in the wired audio receiving module 211, the Bluetooth module 212, the FM receiving module and the microphone receiving module 213, then the audio processor 22 can only receive the audio data output by one of the modules at a time to avoid interference between the audio data received by different modules.

[0075] As a preferred embodiment, the audio playback circuit 2 also includes a mode switching button 26, which is used to receive a mode switching instruction and send the mode switching instruction to the audio processor 22, so that the audio processor 22 sends a power-on instruction to the video playback circuit 3 when it determines that it is working in the video playback mode based on the mode switching instruction, otherwise it sends a standby instruction to the video playback circuit 3.

[0076] In this embodiment, when the user needs to switch modes, the mode switch can be performed by operating the mode switch button 26. For example, the mode switch button 26 is provided with a combination of one or more of a video playback mode button, a Bluetooth mode button, an FM mode button, and a microphone mode button. When the user presses the corresponding button, the smart speaker enters the corresponding mode. For example, after the smart speaker is started, the audio playback circuit 2 and the video playback circuit 3 are both in standby state. If the user presses the video playback mode button at this time, the audio playback circuit 2 is first turned on, and the audio processor 22 in the audio playback circuit 2 sends a power-on instruction to the video playback circuit 3, so that the video playback circuit 3 is turned on, and receives the corresponding video data, extracts the audio data therein and transmits it to the audio playback circuit 2, so that the video data and audio data are played simultaneously; and when the user presses the Bluetooth mode button, after the audio playback circuit 2 is turned on, the audio processor 22 in the audio playback circuit 2 sends a standby instruction to the video playback circuit 3, so that the video playback circuit 3 is turned on. The playback circuit 3 remains in a standby state, and the Bluetooth module 212 receives the corresponding audio data, thereby playing the audio data. Of course, according to needs, the Bluetooth module 212 can also receive video data, such as movies or videos shot by the user. At this time, it can also enter the video playback mode, thereby turning on the video playback circuit 3. This application does not limit this. When the user presses the FM mode button, the audio playback circuit 2 is turned on, and the audio processor 22 in the audio playback circuit 2 sends a standby instruction to the video playback circuit 3, so that the video playback circuit 3 remains in a standby state, and the FM receiving module receives the corresponding audio data, thereby playing the audio data.

[0077] A 3.5mm headphone jack can also be set on the audio playback circuit 2. When the smart speaker is working in any mode, if the headphone jack is connected to a microphone, the audio playback circuit 2 can convert the sound received by the microphone, that is, the voltage signal, into audio data through the microphone receiving module 213 and send it to the audio processor 22, mixing the sound received by the microphone into the played music to achieve the effect of karaoke.

[0078] The mode switching button 26 set on the audio playback circuit 2 can specifically include but is not limited to EQ (sound effect), VIDEO (video), BAT (battery), BT (Bluetooth) and FM (radio), and is used to operate the audio processor 22. The EQ button can adjust the sound effect of the audio playback circuit 2, the VIDEO button can switch to the video playback mode, the BAT button can display the remaining power of the battery module 1 after being pressed, the BT button switches to the Bluetooth mode, and the FM button switches to the FM mode. A volume adjustment button can also be set to adjust the volume of the audio playback circuit 2.

[0079] Based on this, the multi-mode switching function of the smart speaker is realized through the coordinated design of the audio playback circuit 2 and the video playback circuit 3.

[0080] In addition, an LED (light-emitting diode) matrix 201 can be provided to display the words BT (Bluetooth mode), FM (radio mode), TV (video playback mode) or the battery level in real time, so that the user can understand the current device status.

[0081] The Bluetooth module 212 may include a Bluetooth signal processor that can connect to a mobile phone or other Bluetooth device for audio communication, and convert the Bluetooth signal into L / R (left / right) audio signal, transmit it to the audio processor 22 for processing, and output it to the power amplifier circuit to drive the speaker to produce sound.

[0082] The microphone input signal interface can reuse the 3.5mm headphone interface, which can be used not only to connect headphones but also to connect a microphone for entertainment functions such as karaoke.

[0083] As a preferred embodiment, the audio playback circuit 2 further includes an AC to DC power supply board 27 and / or a DC power supply interface 28, and a power control module 29;

[0084] The AC (Alternating Current) to DC (Direct Current) power board 27 is used to convert the input AC power into DC power to power the audio processor 22;

[0085] The DC power interface 28 is used to power the audio processor 22 based on the DC power input by the power adapter when connected to the power adapter;

[0086] The power control module 29 is used to control the battery module 1 to pause output and control the AC to DC power board 27 or the DC power interface 28 to charge the battery module 1 when the AC to DC power board 27 is connected to AC power or the DC power interface 28 is connected to the power adapter;

[0087] The power output module 24 is further configured to supply power to the video playback circuit 3 based on the output voltage of the AC to DC power board 27 or the DC power interface 28 .

[0088] In this embodiment, not only can the audio playback circuit 2 be powered by the battery module 1, but an AC-to-DC power supply board 27 and / or a DC power supply interface 28 are also provided in the audio playback circuit 2. The AC-to-DC power supply board 27 can convert the input AC power into DC power to power the audio processor 22. Therefore, when the working environment of the smart speaker supports plugging into a socket, it can draw power from the distribution network; and when there is an external DC power supply to power the smart speaker, the DC power supply interface 28 is connected to the power adapter, and the audio processor 22 is powered based on the DC power input by the power adapter. Therefore, the smart speaker in this application supports multiple power supply methods, which improves the adaptability and portability of the smart speaker.

[0089] Based on this, when the AC to DC power board 27 is connected to AC power or the DC power interface 28 is connected to the power adapter, the AC to DC power board 27 is used to convert the input AC power into DC power or the DC power interface 28 is used to power the audio processor 22 based on the DC power input by the power adapter to save the power of the battery module 1 and ensure that the remaining power of the battery module 1 can be guaranteed to power the smart speaker when AC power access cannot be supported or there is no external power adapter.

[0090] Of course, when the AC to DC power board 27 is connected to AC power or the DC power interface 28 is connected to the power adapter, not only is the AC to DC power board 27 used to convert the input AC power into DC power or the DC power interface 28 uses the DC power input from the power adapter to power the audio processor 22, but the AC to DC power board 27 can also be used to convert the input AC power into DC power or the DC power interface 28 uses the DC power input from the power adapter to charge the battery module 1 to ensure that the battery module 1 has sufficient remaining power, thereby ensuring that the smart speaker can run for a longer time when powered by the battery module 1.

[0091] Specifically, the AC-to-DC power board 27 of the audio playback circuit 2 can support 100-240V AC input, and the DC power interface 28 can support 10-15V DC input. The power control module 29 can convert the input voltage to 10V-13.2V DC when there is AC or DC input, which is used to charge the battery module 1 and power the audio processor 22 and the video playback circuit 3. When there is no AC or DC input, it switches to the battery module 1 power supply mode, and the battery module 1 powers the audio playback circuit 2. At the same time, the status of the battery module 1 is detected. When the output voltage of the battery module 1 is lower than 10V, the switch is automatically disconnected, stopping the power supply of the battery module 1 to protect the service life of the battery module 1. The voltage output range of the battery module 1 can be 10V-13.2V.

[0092] As a preferred embodiment, it also includes a power prompt module;

[0093] The power control module 29 is further configured to obtain the remaining power of the battery module 1 and control the power prompt module to issue a power prompt when the remaining power is not greater than a preset remaining power.

[0094] A power reminder module is also provided in the smart speaker. The power control module 29 can not only use the AC to DC power board 27 to convert the input AC power into DC power or the DC power interface 28 to charge the battery module 1 based on the DC power input by the power adapter, but also monitor the status of the battery module 1, such as monitoring the remaining power of the battery module 1. When the remaining power of the battery module 1 is not greater than the preset remaining power, the power reminder module is controlled to issue a power reminder, thereby reminding the user to charge the battery module 1 in time or find other external power sources to ensure that the smart speaker can continue to operate.

[0095] In addition, the power control module 29 can also monitor the health status of the battery module 1, such as monitoring the temperature of the battery module 1. In this case, a battery status prompt module can be set. When the temperature of the battery module 1 is greater than the preset temperature threshold, the power control module 29 can control the battery status prompt module to issue an overtemperature prompt, so that the user can be informed of the abnormal working status of the battery module 1 in time, and then protect and maintain the battery module 1 in time.

[0096] For example, the power prompt module and the battery status prompt module can be integrated into a battery status indicator light 4. The power control module 29 calculates the remaining power of the battery by detecting the voltage value of the battery module 1 and combining it with the voltage-power conversion curve. When the remaining power of the battery module 1 is lower than 25% of the total power, the battery status indicator light 4 lights up to remind the user to charge in time.

[0097] As a preferred embodiment, the video playback circuit 3 is further configured to feed back its own real-time status to the audio playback circuit 2 when entering the standby mode.

[0098] When the video playback circuit 3 enters the standby state, it can also feedback its own real-time status to the audio playback circuit 2, that is, feedback to the audio playback circuit 2 whether it maintains the standby state, so that the audio playback circuit 2 can monitor the status of the video playback circuit 3.

[0099] After the audio playback circuit 2 sends a standby command to the video playback circuit 3, if the real-time status fed back by the video playback circuit 3 to the audio playback circuit 2 is the power-on state, the audio playback circuit 2 can send a standby command to the video playback circuit 3 again, or prompt the user of an abnormality in the video playback circuit 3.

[0100] Of course, when the video playback circuit 3 is in the on state, the real-time status can also be fed back to the audio playback circuit 2, that is, the audio playback circuit 2 can perform all-round real-time monitoring of the video playback circuit 3 to determine the status of the video playback circuit 3.

[0101] As a preferred embodiment, the video playback circuit 3 includes a tuner 31, a video data receiving port 32, a main control chip 33, a video playback power supply circuit 34 and a video playback module;

[0102] The video playback power supply circuit 34 is used to convert the power supply voltage output by the audio playback circuit 2 into power for the main control chip 33 and the video playback module;

[0103] The tuner 31 is used to receive digital television broadcast signals and obtain video data;

[0104] The video data receiving port 32 is used to receive video data;

[0105] The main control chip 33 is used to decode the video data when receiving a power-on command, and generate corresponding audio data and video playback data, send the audio data to the audio playback circuit 2, convert the video playback data into a video playback signal, and drive the video playback module to play the video screen based on the video playback signal; and enter the standby state when receiving a standby command.

[0106] The video playback power supply circuit 34 in the video playback circuit 3 can convert the power supply voltage output by the audio playback circuit 2 to power the main control chip 33 and the video playback module. For example, if the power supply voltage output by the audio playback circuit 2 is 10V-13.2V DC, but the operating voltage of the main control chip 33 and the video playback module is 3.3V, 1.0V or 1.5V, then the video playback power supply circuit 34 converts the 10V-13.2V DC into different voltages of 3.3V, 1.0V or 1.5V to power the main control chip 33 and the video playback module to ensure the normal operation of the main control chip 33 and the video playback module.

[0107] The main control chip 33 can decode the video data obtained by the tuner 31 or the video data received by the video data receiving port 32, extract the corresponding video playback data and audio data therefrom, and transmit the audio data to the audio playback circuit 2 for playback, while the video playback data is converted into a video playback signal, and the video playback module is driven to play the video screen based on the video playback signal to complete the complete playback of the video data.

[0108] As a preferred embodiment, the video playback module includes a display screen, a display screen power supply module 352 and a display screen backlight circuit 353;

[0109] The display screen power supply module 352 is used to power the display screen based on the power supply voltage output by the video playback power supply circuit 34;

[0110] The display screen backlight circuit 353 is used to provide backlight for the display screen based on the power supply voltage output by the video playback power supply circuit 34;

[0111] The main control chip 33 is specifically used to control the display screen power supply module 352 and the display screen backlight circuit 353 to start up when receiving a power-on command, decode and process the video data, and generate corresponding audio data and video playback data, send the audio data to the audio playback circuit 2, convert the video playback data into a video playback signal, and drive the display screen to play the video screen based on the video playback signal; and control the display screen power supply module 352 and the display screen backlight circuit 353 to stop working when receiving a standby command, so that the display screen is turned off.

[0112] The display screen power supply module 352 in the video playback module supplies power to the display screen based on the power supply voltage output by the video playback power supply circuit 34. At the same time, the main control chip 33 drives the display screen based on the video playback signal, so that the display screen can play video images. Considering that the brightness of the display screen itself is relatively low, a display screen backlight circuit 353 is also provided to provide backlight for the display screen based on the power supply voltage output by the video playback power supply circuit 34, so as to increase the brightness of the display screen and make the video image clearer. Specifically, the display screen backlight circuit 353 includes an LED module and a backlight driving circuit. The backlight driving circuit provides a backlight voltage to the LED module based on the power supply voltage output by the video playback power supply circuit 34 to drive the LED module to emit light and provide backlight for the display screen to increase the brightness of the video image on the display screen.

[0113] When the main control chip 33 receives the standby instruction, it controls the display screen power supply module 352 and the display screen backlight circuit 353 to stop working, thereby stopping the display screen from working to reduce power consumption.

[0114] As a preferred embodiment, the video playback circuit 3 further includes a signal conversion module 36; the display screen is an eDP (Embedded DisplayPort, embedded display interface) screen 351;

[0115] The signal conversion module 36 is used to convert the video playback signal into an eDP screen driving signal, and drive the display screen to play the video image based on the eDP screen driving signal.

[0116] The display screen in this embodiment is an eDP screen 351. The eDP screen 351 has a high resolution and occupies a small space, making it suitable for mobile outdoor use. In order to drive the eDP screen 351 and enable the eDP screen 351 to display normal video images, a signal conversion module 36 is also provided. The signal conversion module 36 converts the video playback signal output by the main control chip 33 into an eDP screen drive signal, so that the eDP screen drive signal cooperates with the display screen power supply module 352 to power the eDP screen 351, so that the eDP screen 351 can display video images.

[0117] In summary, the video playback circuit 3 is responsible for realizing the TV function of the smart speaker, including the signal conversion module 36, which can convert the LVDS signal into an eDP signal when the video playback signal output by the main control chip 33 is an LVDS signal. The main control chip 33 can also decode the video data, control the display screen, and transmit the audio data to the audio playback circuit 2 for audio output.

[0118] Since the audio playback circuit 2 is usually closer to the user than the video playback circuit 3, a remote control input interface 203 and a video control button 202 for controlling the video playback circuit 3 can also be set on the audio playback circuit 2, which are used for functions such as turning the video playback circuit 3 on and off and switching the channels of the video playback circuit 3.

[0119] The IR (infrared) remote control signal received by the remote control input interface 203 can be input to the main control chip 33 of the video playback circuit 3 through the remote control / key output interface and the remote control / key interface of the video playback circuit 3, thereby controlling the operation of the video playback circuit 3. The video control buttons 202 provided on the audio playback circuit 2 include but are not limited to up, down, left, right, confirm, menu, and source, and are used to control the video playback circuit 3.

[0120] The model of the main control chip 33 of the video playback circuit 3 may be MSD3553, which is responsible for realizing the television functions, including video decoding, display control, and interaction with the audio playback circuit 2.

[0121] The display power supply module 352 is responsible for controlling the power supply to the eDP panel 351, which operates at a 3.3V voltage. When powered on, the module switches on the metal-oxide-semiconductor transistor (MOS) to provide power to the eDP panel 351. In standby mode, the module switches off the MOS transistor, stopping power supply to the eDP panel 351 to reduce power consumption.

[0122] The signal conversion module 36 can use the LT8911 chip to convert the LVDS signal into an eDP signal to drive the eDP screen 351 to work.

[0123] The display backlight circuit 353 includes BL_ON and PWM (Pulse Width Modulation) signals. The BL_ON signal is used to turn the backlight of the eDP screen 351 on and off, while the PWM signal is used to adjust the backlight brightness of the eDP screen 351. The remote control can adjust the backlight brightness of the eDP screen 351. The eDP screen 351 can be a 15.6-inch 1920×1080 eDP display.

[0124] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0125] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smart speaker, characterized in that: Including battery module, audio playback circuit and video playback circuit; The battery module is used to supply power to the audio playback circuit; The audio playback circuit is used to play received audio data, power the video playback circuit based on the output voltage of the battery module, and send a power-on command to the video playback circuit when working in a video playback mode, and otherwise send a standby command to the video playback circuit; The video playback circuit is configured with a tuner and a video data receiving port, and is configured to receive a digital television broadcast signal and obtain video data through the tuner when receiving the power-on command, or receive video data through the video data receiving port, play video images based on the video data, and send audio data in the video data to the audio playback circuit; Entering the standby state upon receiving the standby instruction.

2. The smart speaker according to claim 1, wherein: The audio playback circuit includes an audio receiving module, an audio processor, a power conversion module, a power output module and an audio output module; The audio receiving module is used to receive audio data output by the video playback circuit or audio data sent by an external device; The audio processor is used to decode the audio data and then play the audio through the audio output module, and send a power-on instruction to the video playback circuit when working in the video playback mode, otherwise send a standby instruction to the video playback circuit; The power conversion module is used to convert the output voltage of the battery module into power for the audio processor; The power output module is used to supply power to the video playback circuit based on the output voltage of the battery module.

3. The smart speaker according to claim 2, wherein: The audio receiving module includes a wired audio receiving module, a Bluetooth module, an FM receiving module and a microphone receiving module or a combination thereof; The wired audio receiving module is used to receive the audio data output by the video playback circuit; The Bluetooth module is used to convert the received Bluetooth signal into audio data; The FM receiving module is used to receive radio signals and convert them into audio data; The microphone receiving module is used to receive the voltage signal output by the microphone and convert it into audio data.

4. The smart speaker according to claim 2, wherein: The audio playback circuit also includes a mode switching button, which is used to receive a mode switching instruction and send the mode switching instruction to the audio processor, so that the audio processor sends a power-on instruction to the video playback circuit when it determines that it is working in the video playback mode based on the mode switching instruction, otherwise it sends a standby instruction to the video playback circuit.

5. The smart speaker according to claim 2, wherein: The audio playback circuit also includes an AC to DC power supply board and / or a DC power supply interface, and a power control module; The AC to DC power supply board is used to convert input alternating current into direct current to power the audio processor; The DC power interface is used to power the audio processor based on the DC power input by the power adapter when connected to the power adapter; The power control module is used to control the battery module to suspend output and control the AC to DC power board or the DC power interface to charge the battery module when the AC to DC power board is connected to AC power or the DC power interface is connected to the power adapter; The power output module is further configured to supply power to the video playback circuit based on the output voltage of the AC to DC power supply board or the DC power interface.

6. The smart speaker according to claim 5, wherein: Also includes a battery reminder module; The power control module is further configured to obtain the remaining power of the battery module and control the power prompt module to issue a power prompt when the remaining power is not greater than a preset remaining power.

7. The smart speaker according to claim 1, wherein: The video playing circuit is further configured to feed back its real-time status to the audio playing circuit when entering the standby mode.

8. The smart speaker according to any one of claims 1 to 7, wherein: The video playback circuit includes a tuner, a video data receiving port, a main control chip, a video playback power supply circuit and a video playback module; The video playback power supply circuit is used to convert the power supply voltage output by the audio playback circuit into voltage and then supply power to the main control chip and the video playback module; The tuner is used to receive digital television broadcast signals and obtain video data; The video data receiving port is used to receive video data; The main control chip is used to decode the video data when receiving the power-on command, generate corresponding audio data and video playback data, send the audio data to the audio playback circuit, convert the video playback data into a video playback signal, and drive the video playback module to play the video screen based on the video playback signal; and enter the standby state when receiving the standby command.

9. The smart speaker according to claim 8, wherein: The video playback module includes a display screen, a display screen power supply module and a display screen backlight circuit; The display screen power supply module is used to power the display screen based on the power supply voltage output by the video playback power supply circuit; The display screen backlight circuit is used to provide backlight for the display screen based on the power supply voltage output by the video playback power supply circuit; The main control chip is specifically used to control the display power supply module and the display backlight circuit to start up when receiving the power-on command, decode and process the video data, and generate corresponding audio data and video playback data, send the audio data to the audio playback circuit, convert the video playback data into a video playback signal, and drive the display screen to play the video screen based on the video playback signal; and control the display power supply module and the display backlight circuit to stop working when receiving the standby command.

10. The smart speaker according to claim 9, wherein: The video playback circuit further includes a signal conversion module; the display screen is an eDP screen; The signal conversion module is used to convert the video playback signal into an eDP screen driving signal, and drive the display screen to play the video image based on the eDP screen driving signal.

Images