Multimedia sound box compatible with multi-power supply

Abstract

The utility model discloses a multimedia sound box compatible with multi-power supply. The multimedia sound box comprises a processing module, a fast charging protocol module, a boost module, a power amplifier module and an interface module. The processing module is used for controlling the power amplifier module to amplify the audio signal according to the power type specification; the interface module is used for detecting and identifying the power type specification or the protocol data type of the peripheral power supply terminal, and transmitting to the fast charging protocol module; the fast charging protocol module is used for controlling the boosting module to carry out boosting conversion when the electric power type specification is obtained, and transmitting the protocol data type to the processing module to be processed when the protocol data type is obtained; the boost module is used for performing boost conversion according to the power type specification; the power amplifier module is used for driving the acoustic loudspeaker. By implementing the multimedia sound box, the power supply compatibility of the multimedia sound box is improved, the output power of the amplifier can be automatically adjusted, the EQ sound effect is ensured to be matched with the power supply, and good auditory experience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of multimedia speaker power supplies, in particular to a multimedia speaker compatible with multiple power supplies. Background Art

[0002] With the current development of product diversification, traditional multimedia speakers can no longer meet people's diversified usage needs. Speakers, as audio playback devices, are indispensable products in people's daily lives. With the development of technology, multimedia speakers have tended to develop in the direction of intelligence and simple structure.

[0003] Some existing intelligent speakers have multiple interfaces, such as USB interface, HDIMI interface, etc. These interfaces only have a single data transmission function and cannot serve multiple purposes.

[0004] Therefore, most existing multimedia speakers use USB-A interfaces for connection, data transmission and power supply with PCs. The power transmission is limited, the output power is small, and the sound effects do not meet user needs, affecting the user experience of the product. Utility Model Content

[0005] Existing multimedia speakers have limited data transmission and power when connected to a power supply terminal, and cannot meet the product needs of users.

[0006] In response to the above problems, a multimedia speaker compatible with multiple power supplies is proposed. The power type specifications of the peripheral power supply terminal are detected through the interface module, and the boost module is controlled by the fast charging protocol module to boost it to the set value. As a result, the multimedia speaker in this application can not only adapt to various types of peripheral power supply terminals, improving the power compatibility of the multimedia speaker in this application, but also automatically adjust the output power of the amplifier, ensuring that the EQ sound effect matches the power supply, bringing a good listening experience to users.

[0007] A multimedia speaker compatible with multiple power supplies, comprising:

[0008] Processing module;

[0009] Fast charging protocol module;

[0010] Boost module;

[0011] Power amplifier module;

[0012] Interface module;

[0013] The processing module is electrically connected to the fast charging protocol module and the power amplifier module respectively, and is used to control the power amplifier to amplify the audio signal according to the power type specification;

[0014] The interface module is electrically connected to the fast charging protocol module, the boost module and the peripheral power supply terminal respectively, and is used to detect and identify the power type specification or protocol data type of the peripheral power supply terminal and transmit it to the fast charging protocol module;

[0015] The fast charge protocol module is also electrically connected to the boost module, and is used to:

[0016] When the power type specification is obtained, the boost module is controlled to perform boost conversion;

[0017] When the protocol data type is acquired, it is transmitted to the processing module for processing;

[0018] The boost module is also electrically connected to the power amplifier module, and is used to perform boost conversion according to the power type regulation;

[0019] The power amplifier is electrically connected to the acoustic speaker and is used to drive the acoustic speaker.

[0020] In conjunction with the multimedia speaker compatible with multiple power supplies described in the present invention, in a first possible implementation, the interface module is a USB Type-C interface type, including:

[0021] Transmission pin;

[0022] communication pin;

[0023] The transmission pin is used to transmit the power supply voltage;

[0024] The fast charging protocol module is communicatively connected to the interface module via the communication pin;

[0025] The communication pin is used to detect the power type specification information of the peripheral power supply terminal and transmit it to the fast charging protocol module.

[0026] In combination with the first possible implementation manner of the present utility model, in a second possible implementation manner, the interface module further includes:

[0027] Differential pin pairs;

[0028] Low-speed signal pin;

[0029] The differential pin pair performs USB 2.0 connection, and the low-speed signal pin serves as a low-speed signal transmission path.

[0030] In combination with the second possible implementation manner of the present invention, in a third possible implementation manner, the power type detected by the communication pin includes a level value range and power protocol data.

[0031] In combination with the third possible implementation manner of the present invention, in a fourth possible implementation manner, the level value range at least includes (0.3V-0.61V), (0.79V-1.17V), and (1.44V-2.04V).

[0032] In combination with the fourth possible implementation of the present invention, in a fifth possible implementation, the fast charging protocol module is also used to obtain the corresponding power type specifications of 5V / 1A, 5V / 2A, and 5V / 3A according to the level value ranges (0.3V-0.61V), (0.79V-1.17V), and (1.44V-2.04V).

[0033] In combination with the third possible implementation manner of the present invention, in a sixth possible implementation manner, the power type specifications corresponding to the power protocol data include at least: 9V / 1A, 12V / 2A, and 15V / 3A.

[0034] In conjunction with the multimedia speaker compatible with multiple power supplies described in the present invention, in a seventh possible implementation, the processing module includes a register unit; the register unit is used to store audio data.

[0035] In conjunction with the multimedia speaker compatible with multiple power supplies described in the present invention, in an eighth possible implementation, the multimedia speaker further includes:

[0036] I2C bus and I2S bus;

[0037] The processing module is communicatively connected to the power amplifier module via the I2C bus for transmitting power type specification information;

[0038] The processing module is electrically connected to the power amplifier module via the I2S bus for transmitting audio data information.

[0039] In conjunction with the multimedia speaker compatible with multiple power supplies described in the present invention, in a ninth possible implementation, the boost module includes a BOOST boost converter, and the BOOST boost converter controls the boost to a preset value via the FB pin.

[0040] The multimedia speaker compatible with multiple power supplies described in the present invention is implemented by detecting the power type specifications of the peripheral power supply terminal through the interface module, and using the fast charging protocol module to control the boost module to boost it to the set value, so that the multimedia speaker in this application can not only adapt to various types of peripheral power supply terminals, improving the power compatibility of the multimedia speaker in this application, but also automatically adjust the output power of the amplifier, ensuring that the EQ sound effect matches the power supply, and bringing a good listening experience to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of 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 paying any creative work.

[0042] Figure 1 This is a schematic diagram of module connections for a multimedia speaker compatible with multiple power supplies in the present invention;

[0043] Figure 2 This is a circuit connection diagram of a multimedia speaker compatible with multiple power supplies in the present invention. DETAILED DESCRIPTION

[0044] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0049] Existing multimedia speakers have limited data transmission and power when connected to a power supply terminal, and cannot meet the product needs of users.

[0050] To solve the above problems, a multimedia speaker that is compatible with multiple power supplies is proposed.

[0051] A multimedia speaker compatible with multiple power supplies, such as Figure 1 , Figure 1 This is a module connection diagram of a multimedia speaker compatible with multiple power supplies in the present invention; it includes a processing module 100, a fast charging protocol module 300, a boost module 400, a power amplifier module 500, and an interface module 200; the processing module 100 is electrically connected to the fast charging protocol module 300 and the power amplifier module 500, respectively, for controlling the power amplifier to amplify the audio signal according to the power type specification; the interface module 200 is electrically connected to the fast charging protocol module 300, the boost module 400 and the peripheral power supply terminal, respectively, for The power type specification or protocol data type of the peripheral power supply terminal is detected and identified, and transmitted to the fast charging protocol module 300; the fast charging protocol module 300 is also electrically connected to the boost module 400, for controlling the boost module 400 to perform boost conversion when the power type specification is obtained, and transmitting it to the processing module 100 for processing when the protocol data type is obtained; the boost module 400 is also electrically connected to the power amplifier module 500, for performing boost conversion according to the power type specification; the power amplifier is electrically connected to the acoustic speaker for driving the acoustic speaker. The power type specification of the peripheral power supply terminal is detected through the interface module 200, and the boost module 400 is controlled by the fast charging protocol module 300 to boost it to the set value, so that the multimedia speaker in this application can not only adapt to various types of peripheral power supply terminals, improving the power compatibility of the multimedia speaker in this application, but also automatically adjust the amplifier output power to ensure that the EQ sound effect matches the power supply, bringing a good listening experience to the user.

[0052] In other preferred embodiments, the processing module 100 may be a Bluetooth chip, a DSP or an MCU.

[0053] Preferably, Figure 2 , Figure 2This is a circuit diagram of a multimedia speaker compatible with multiple power supplies, according to the present invention. Interface module 200 is a USB Type-C interface, including transmission pins and communication pins. The transmission pins are used to transmit power voltage. Fast-charge protocol module 300 communicates with interface module 200 via the communication pins. The communication pins are used to detect the power type and specification information of the external power supply terminal and transmit it to fast-charge protocol module 300.

[0054] Furthermore, the interface module 200 further includes a differential pin pair; a low-speed signal pin; the differential pin pair performs USB 2.0 connection, and the low-speed signal pin serves as a low-speed signal transmission path.

[0055] Interface module 200 (USB-C) is short for USB Type-C, a standard, multi-functional universal connector. It includes two USB differential pin pairs (D+ / D-), a pair of low-speed signal pins (SBU), two USB communication pins (CC1 / CC2), four transmission pins (VBUS), and four ground pins (GND). The pins are arranged symmetrically in double rows to support fast transmission and high power supply. This interface has no positive and negative orientation distinction and supports both-way insertion and can be plugged and unplugged at will. Its unique interface features include: two CC communication pins (CC1 / CC2) for data exchange and communication between USB Type-C devices and for detecting and identifying power supply capabilities; two USB differential pin pairs (D+ / D-) for audio playback and software upgrades; and four transmission pins (VBUS) and four ground pins for power supply.

[0056] Furthermore, as shown in Table 1, Table 1 is a table of input power and power distribution for the USB-C interface CC communication pin identification. The power type detected by the communication pin includes a level value range and power protocol data.

[0057] Preferably, the level value range includes at least (0.3V-0.61V), (0.79V-1.17V), and (1.44V-2.04V).

[0058] Specifically, the fast charging protocol module 300 is also used to obtain the corresponding power type specifications of 5V / 1A, 5V / 2A, and 5V / 3A according to the level value ranges (0.3V-0.61V), (0.79V-1.17V), and (1.44V-2.04V).

[0059] Specifically, the power type specifications corresponding to the power protocol data include at least: 9V / 1A, 12V / 2A, and 15V / 3A.

[0060] Furthermore, the processing module 100 includes a register unit; the register unit is used to store audio data.

[0061] Furthermore, the multimedia speaker also includes an I2C bus and an I2S bus;

[0062] The processing module 100 is communicatively connected to the power amplifier module 500 via an I2C bus for transmitting power type specification information; the processing module 100 is electrically connected to the power amplifier module 500 via an I2S bus for transmitting audio data information.

[0063] Preferably, the boost module 400 includes a BOOST boost converter, and the BOOST boost converter controls the boost voltage to a preset value through the FB pin.

[0064] Table 1 USB-C interface CC communication pin identification input power and power distribution table

[0065]

[0066] The fast charging protocol module 300 (USB fast charging processor) communicates with the USB-C interface through the CC communication pin (CC1 / CC2), and exchanges and communicates data with peripheral power supply terminals such as PCs. The USB-C interface CC communication pin identifies the input power and the power distribution table identifies the power specifications as shown in Table 1. When the USB-C interface CC communication pin detects a level value range of (0.3V~0.61V), (0.79V~1.17V), (1.44V~2.04V), the fast charging processor will identify the corresponding peripheral power supply terminal. The power type specifications are 5V / 1A, 5V / 2A, and 5V / 3A. If the CC communication pin (CC1 / CC2) detects fast charging protocol data, it will identify the device power type as a fast charging device (compatible with mainstream fast charging protocols such as PD protocol and QC protocol) and transmit it to the MCU main control through the bidirectional I2C bus. At the same time, the power type specification identified by the CC communication pin (CC1 / CC2) is also controlled by the FB pin to boost the boost module 400 (BOOST boost converter) to the preset values ​​of 6.5V, 8.5V, and 10V, as shown in Table 1.

[0067] After the processing module 100 (MCU) obtains the power type specification information transmitted by the fast charging protocol module 300 (USB fast charging processor) from the I2C bus communication, it switches the tuning data preset in the register unit (DSP register) (such as the 6-level power and matching 6 sets of EQ data in Table 1) to the corresponding mode, and the audio data in the register unit (DSP register) is transmitted to the amplifier through the I2S bus for audio amplification to drive the acoustic speaker.

[0068] After the boost module 400 (BOOST boost converter) obtains the power type specification from the fast charging protocol module 300 (USB fast charging processor), it controls the boost to the system preset values ​​of 6.5V, 8.5V, and 10V through the FB pin, as shown in the power and power distribution in Table 1. If the fast charging protocol module 300 (USB fast charging processor) detects the fast charging protocol data, when the fast charging protocol handshake is successful, the power supply will go through the fast charging channel, the fast charging power will not be boosted, and the high voltage output of the fast charge will pass directly through the amplifier to complete the multi-power switching supply mode.

[0069] The power amplifier module 500 has different power levels. Due to multiple power supplies, each level has different load capacities. To prevent the maximum amplifier output from causing power failure to peripheral devices such as PCs, the module uses a power-level matching scheme with power levels and EQ frequency response, as shown in Table 1: 5W+EQ1, 10W+EQ2, 15W+EQ3, 18W+EQ4, 24W+EQ5, and 30W+EQ6. Each power level and EQ combination has been meticulously tuned by acoustic engineers to achieve optimal sound quality.

[0070] The multimedia speaker compatible with multiple power supplies described in the present invention is implemented by detecting the power type specifications of the peripheral power supply terminal through the interface module 200, and using the fast charging protocol module 300 to control the boost module 400 to boost it to the set value, so that the multimedia speaker in this application can not only adapt to various types of peripheral power supply terminals, improving the power compatibility of the multimedia speaker in this application, but also automatically adjust the output power of the amplifier, ensuring that the EQ sound effect matches the power supply, and bringing a good listening experience to the user.

[0071] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multimedia speaker compatible with multiple power supplies, comprising: Processing module; Fast charging protocol module; Boost module; Power amplifier module; Interface module; The processing module is electrically connected to the fast charging protocol module and the power amplifier module respectively, and is used to control the power amplifier module to amplify the audio signal according to the power type specification; The interface module is electrically connected to the fast charging protocol module, the boost module and the peripheral power supply terminal respectively, and is used to detect and identify the power type specification or protocol data type of the peripheral power supply terminal and transmit it to the fast charging protocol module; The fast charge protocol module is also electrically connected to the boost module, and is used to: When the power type specification is obtained, the boost module is controlled to perform boost conversion; When the protocol data type is acquired, it is transmitted to the processing module for processing; The boost module is also electrically connected to the power amplifier module, and is used to perform boost conversion according to the power type regulation; The power amplifier module is electrically connected to the acoustic speaker and is used to drive the acoustic speaker.

2. The multimedia speaker compatible with multiple power supplies according to claim 1, characterized in that: The interface module is a USB Type-C interface type, including: Transmission pin; communication pin; The transmission pin is used to transmit the power supply voltage; The fast charging protocol module is communicatively connected to the interface module via the communication pin; The communication pin is used to detect the power type specification information of the peripheral power supply terminal and transmit it to the fast charging protocol module.

3. The multimedia speaker compatible with multiple power supplies according to claim 2, characterized in that: The interface module also includes: Differential pin pairs; Low-speed signal pin; The differential pin pair is used for USB 2.0 connection, and the low-speed signal pin is used for a low-speed signal transmission path.

4. The multimedia speaker compatible with multiple power supplies according to claim 3, characterized in that: The power type detected by the communication pin includes a level value range and power protocol data.

5. The multimedia speaker compatible with multiple power supplies according to claim 4, characterized in that: The level value range includes at least (0.3V-0.61V), (0.79V-1.17V), and (1.44V-2.04V).

6. The multimedia speaker compatible with multiple power supplies according to claim 5, characterized in that: The fast charging protocol module is also used to obtain the corresponding power type specifications of 5V / 1A, 5V / 2A, and 5V / 3A according to the level value ranges (0.3V-0.61V), (0.79V-1.17V), and (1.44V-2.04V).

7. The multimedia speaker compatible with multiple power supplies according to claim 4, characterized in that: The power type specifications corresponding to the power protocol data include at least: 9V / 1A, 12V / 2A, and 15V / 3A.

8. The multimedia speaker compatible with multiple power supplies according to claim 1, characterized in that: The processing module includes a register unit; the register unit is used to store audio data.

9. The multimedia speaker compatible with multiple power supplies according to claim 1, characterized in that: The multimedia speaker also includes: I2C bus and I2S bus; The processing module is communicatively connected to the power amplifier module via the I2C bus for transmitting power type specification information; The processing module is electrically connected to the power amplifier module via the I2S bus for transmitting audio data information.

10. The multimedia speaker compatible with multiple power supplies according to claim 1, characterized in that: The boost module includes a BOOST boost converter, and the BOOST boost converter controls the boost voltage to a preset value through the FB pin.

Images