Cd player usable in cooperation with a smart home based on voice control

Abstract

This utility model discloses a voice-controlled CD player that can be used in conjunction with smart home systems. It includes an upper casing and a lower casing, and internally houses a control component and a CD laser head. The control component includes a control chip and a voice recognition module, which converts user voice into control commands. The control chip includes a decoding chip, a storage chip, a Bluetooth mesh gateway, and a WiFi module, enabling it to match and communicate with smart home protocols. The device also includes RGB ambient lighting, an FM transmitter module, and a battery management module. This utility model utilizes commercially available hardware and existing algorithms to achieve voice interaction, CD playback, and smart home collaboration, solving the problems of limited functionality and poor interactivity in traditional CD players.

Description

Technical Field

[0001] This utility model relates to a CD playback device based on voice control that can be used in conjunction with smart home systems, belonging to the field of player technology. Background Technology

[0002] CD players, also known as laser disc players or laser turntables, are intelligent, high-fidelity stereo sound devices controlled by microcomputers. They employ advanced laser technology, digital technology, computer technology, and various new components, and have advantages such as high-density recording, long playback time, easy operation, and fast track selection. They can realistically reproduce recorded content with clear layers and a sense of presence.

[0003] However, traditional CD players suffer from limited functionality, with their core function largely confined to audio playback. Operation relies on manual intervention, resulting in a rigid human-computer interaction and a poor user experience. With the rapid development of smart home technology, the collaborative operation of various smart devices in the home environment has become a trend. However, traditional CD players lack IoT capabilities and cannot interface with smart home systems. They cannot function as control terminals to operate other smart home products, nor can they provide convenient control via voice commands, failing to meet the needs of modern users for smart living scenarios. Utility Model Content

[0004] To address this issue, this invention provides a voice-controlled CD player that can be used in conjunction with smart home devices, solving the problems of traditional CD players having limited functionality, poor human-computer interaction, difficulty in achieving voice control, and difficulty in coordinating with smart home products.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a CD playback device based on voice control that can be used in conjunction with smart home systems, including an upper housing, a lower housing connected to the rear of the upper housing, a disc running space formed at the front of the upper housing, and a detachable cover plate connected to the outer side of the disc running space.

[0006] The upper and lower housings form an accommodating space, and the accommodating space houses a control component and a CD laser head. The control component includes a control chip and a voice recognition module. The voice recognition module and the control chip are connected via a serial communication port. The voice recognition module is used to convert user voice into device control commands using a preset voice recognition algorithm to execute the functions of the CD playback device. The CD laser head is electrically connected to the control chip. The CD laser head is exposed in the disc running space and is used to install and read CD discs.

[0007] The control chip includes a decoding chip, a storage chip, and a Bluetooth MESH gateway; the storage chip and the decoding chip are electrically connected, and the storage chip is used to store the CD player's operating data, voice command feature library, and smart home device control protocol library; the Bluetooth MESH gateway and the decoding chip are connected via a serial communication port, and the Bluetooth MESH gateway is used to establish a communication connection between the CD player as a Bluetooth gateway and smart home devices to transmit control commands from the smart home devices;

[0008] The control chip is used to match the corresponding smart home device control protocol according to the control command output by the voice recognition module. The control chip is also used to send control signals to the target smart home device through the Bluetooth MESH gateway.

[0009] As a preferred solution for a CD player device that can be used in a smart home based on voice control, it also includes an RGB ambient light. The RGB ambient light is electrically connected to the control chip. The RGB ambient light is used to present corresponding lighting effects according to the working mode and audio signal changes of the CD player device, so as to indicate the working status and create an audio atmosphere.

[0010] As a preferred solution for a CD player device that can be used in a smart home based on voice control, it also includes an FM transmitter module. The FM transmitter module is electrically connected to the control chip. The FM transmitter module is used to receive and transmit FM broadcast signals to realize the FM radio function of the CD player device.

[0011] As a preferred solution for a voice-controlled CD player that can be used in a smart home environment, the control chip also includes a battery protection chip and a charging management chip; the interior of the housing is also equipped with a battery module, which is electrically connected to the control chip to power the CD player.

[0012] The battery module and the battery protection chip are electrically connected, and the battery protection chip and the decoding chip are electrically connected. The battery protection chip is used to provide overvoltage, undervoltage, overcurrent and short circuit protection for the battery module.

[0013] The battery module and the charging management chip are electrically connected, and the charging management chip and the decoding chip are electrically connected. The charging management chip is used to monitor the charging current, voltage and temperature of the battery module.

[0014] As a preferred solution for a voice-controlled CD playback device that can be used in a collaborative smart home, the control chip further includes a mechanism driver chip. The CD laser head and the mechanism driver chip are electrically connected, and the mechanism driver chip and the decoding chip are electrically connected. The mechanism driver chip is used to drive the CD laser head.

[0015] As a preferred solution for a CD playback device that can be used in a smart home based on voice control, the control chip also includes an audio power amplifier chip, which is electrically connected to the decoding chip. The audio power amplifier chip is used to amplify the audio signal output by the CD playback device.

[0016] As a preferred solution for a voice-controlled CD player that can be used in a smart home environment, the control chip further includes an LCD driver chip and an infrared or wireless remote control chip; the LCD driver chip and the decoding chip are electrically connected, and the LCD driver chip is used to drive and control the touch / LCD screen configured in the CD player; the infrared or wireless remote control chip and the decoding chip are electrically connected, and the infrared or wireless remote control chip is used to control the infrared remote control configured in the CD player.

[0017] As a preferred solution for a voice-controlled CD playback device that can be used in conjunction with smart homes, it also includes a button module and an interface component; the button module is equipped with physical buttons exposed on the top of the upper housing, the button module is electrically connected to the control chip, and the button module is used to control the CD playback device through physical buttons;

[0018] The interface component and the control chip are electrically connected. The interface component includes a headphone jack, a USB flash drive interface, an SD card interface, and a Type-C charging interface.

[0019] As a preferred solution for a CD playback device that can be used in a collaborative smart home based on voice control, the back of the lower housing is provided with a desktop stand and a wall-mounted stand.

[0020] As a preferred solution for a CD playback device that can be used in a collaborative smart home based on voice control, it also includes a camera. The camera and the control chip are connected via a Wi-Fi module. The camera is used to acquire information about the surrounding environment of the CD playback device.

[0021] The Wi-Fi module is also used to acquire AI large model data from a remote server in real time, so as to conduct real-time interactive dialogue between people and devices.

[0022] This utility model has the following advantages:

[0023] First, by setting up a voice recognition module, the user's voice can be converted into device control commands based on a preset voice recognition algorithm, enabling voice control of the CD playback device without manual operation, greatly improving the convenience of operation and interaction efficiency, and enhancing the user experience.

[0024] Secondly, the Bluetooth MESH gateway integrated in the control chip enables the CD player to act as a Bluetooth gateway to establish communication connections with smart home devices. Combined with the smart home device control protocol library pre-stored in the storage chip, it can match the corresponding control protocol according to voice commands and send control signals to the target device, allowing the CD player to integrate into the smart home system, realize multi-device collaborative work, and meet the needs of modern smart living scenarios.

[0025] Third, it is equipped with RGB ambient lighting, which can present corresponding lighting effects according to the device's working mode and audio signal changes, serving as both a status indicator and an atmosphere-creating function; it integrates an FM transmitter module, supporting FM radio function and expanding audio sources; it has a button module and a rich set of interface components, taking into account both physical operation and external device connection needs, improving the device's practicality and compatibility.

[0026] Fourth, the control chip includes a battery protection chip and a charging management chip, which can protect the battery module from overvoltage, undervoltage, overcurrent, and short circuit, as well as monitor the current, voltage, and temperature during the charging process, ensuring battery safety and extending the service life of the equipment.

[0027] Fifth, the lower casing features a desktop stand and a wall mount, allowing the device to be placed on a desktop or hung on a wall to suit different home layouts and enhance its environmental adaptability. The camera connects to the control chip via a Wi-Fi module, enabling it to acquire information about the device's surroundings and providing environmental monitoring capabilities, further expanding the device's application scenarios.

[0028] It is evident that this utility model, while retaining the core function of CD playback, achieves diversification and intelligence through the combination of voice control and smart home linkage, solving the problems of traditional CD playback devices having limited functionality, poor interactivity, and difficulty in integrating into smart home systems, and thus has significant practical value. Attached Figure Description

[0029] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0031] Figure 1 This is a three-dimensional structural diagram of the multi-functional CD playback device with artificial intelligence voice control provided in the embodiments of this utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the AI ​​voice-controlled multi-functional CD playback device provided in this embodiment of the utility model;

[0033] Figure 3 This is an exploded structural diagram of the multi-functional CD playback device with artificial intelligence voice control provided in the embodiments of this utility model;

[0034] Figure 4 This is a schematic diagram of the hardware architecture of the AI ​​voice-controlled multi-functional CD playback device provided in this embodiment of the present invention.

[0035] In the diagram: 1. Upper casing; 2. Lower casing; 3. Disc running space; 4. Removable cover; 5. Accommodation space; 6. Control components; 7. CD laser head; 8. Control chip; 9. Voice recognition module; 10. Battery module; 11. Decoding chip; 12. Storage chip; 13. Bluetooth MESH gateway; 14. RGB ambient light; 15. Interface components; 16. FM transmitter module; 17. Battery protection chip; 18. Charging management chip; 19. Chassis driver chip; 20. Audio power amplifier chip; 21. LCD driver chip; 22. Infrared or wireless remote control chip; 23. Button module; 24. Desktop stand; 25. Wall mount; 26. Camera. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] It needs to be stated that:

[0038] The hardware involved in the device in the following embodiments includes, but is not limited to, control components (control chip, voice recognition module, model: AI chip based on Jerry series AC7911B8 / BA, etc.), WiFi module model: WiFi+BT integrated dual-mode wireless module based on ESP32 series chip or AP6255 chip, CD laser head (M93BG6, etc.), battery module (18650 lithium battery / polymer battery), RGB ambient light, FM transmitter module, interface components, button module, camera, and control chip. The integrated decoding chip (Silan Microelectronics SC6137D / SC6135B / SC6136A / SC9659P or Sunplus SPE8104), memory chip (M12L616416A, T24C02A), Bluetooth MESH gateway, battery protection chip (DW01), charging management chip (TP4056), mechanism driver chip (YT5901), audio power amplifier chip, LCD driver chip (HT1621B), infrared or wireless remote control chip, etc., are all commercially available mature products.

[0039] These hardware components are obtained through open market procurement channels (such as electronic component supplier platforms, hardware accessory markets, etc.). Their functional characteristics, electrical interfaces, physical specifications, etc., follow the definitions of industry general standards or product manuals. This utility model only makes reasonable selection, integration and structural / circuit connection design of the hardware, without making innovative modifications to the hardware itself.

[0040] The algorithms used in the device operation in the following embodiments include, but are not limited to, the voice acquisition preprocessing algorithm (such as noise reduction, framing, and windowing), feature extraction algorithm (Mel frequency cepstral coefficients MFCC), and instruction matching algorithm (Dynamic Time Warping DTW) of the voice recognition module; the instruction parsing algorithm and smart home device control protocol matching algorithm of the control chip; the CD audio decoding algorithm (following the Red Book standard); the image recognition algorithm (motion detection and light detection based on OpenCV); and the PWM control algorithm of the RGB ambient light (to adjust the light color, brightness, and flashing mode), all of which are existing publicly available algorithms.

[0041] The aforementioned algorithms have been widely used in fields such as speech recognition, audio processing, smart home control, and image processing, possessing a mature theoretical foundation and practical verification. This invention, based on the functional requirements of the device, rationally selects and applies these algorithms, deploying them in the control chip and related modules through software programming (such as embedded program development) to achieve coordinated operation between hardware and algorithms. No original invention or improvement has been made to the algorithms themselves.

[0042] See Figure 1 , Figure 2 , Figure 3 and Figure 4This utility model provides a voice-controlled CD playback device that can be used in conjunction with smart home systems. It includes an upper housing 1, a lower housing 2 connected to the rear of the upper housing 1, and a disc running space 3 formed at the front of the upper housing 1. A removable cover 4 is connected to the outer side of the disc running space 3. This structural design facilitates the placement and replacement of CD discs. The removable cover 4 protects the delicate components inside the disc running space 3 when the device is not in use, preventing dust and other foreign objects from entering and affecting the device's performance. The disc running space 3 provides space for CD disc rotation and laser head data reading, and its size and structure are compatible with common CD disc specifications.

[0043] The upper housing 1 and the lower housing 2 form an accommodating space 5, which houses a control component 6 and a CD laser head 7 (M93BG6 CD laser head). The control component 6 includes a control chip 8 and a voice recognition module 9. Taking a common embedded voice recognition module 9 as an example, its working principle involves acquiring user voice through a built-in microphone. First, the acquired voice signal undergoes preprocessing, such as noise reduction, to improve its quality. Then, feature extraction is performed using methods like Mel-frequency cepstral coefficients (MFCC), converting the voice signal into a feature vector that a computer can process. Next, an acoustic model is trained based on a large amount of voice data. When the user issues a voice command, the extracted feature parameters are input into the acoustic model to obtain candidate text, which is then combined with a language model for decoding to obtain the final recognition result. This recognition result is transmitted to the control chip 8 via a serial communication connection. The control chip 8 executes corresponding CD playback device functions, such as play, pause, and fast forward, according to a preset instruction set and logic. The CD laser head 7 (M93BG6 CD laser head) and the control chip 8 are electrically connected. The CD laser head 7 is exposed in the disc running space 3 and is used to install and read CD discs. Its working principle is that a laser beam is emitted onto the surface of the CD disc. The pits and flat surfaces on the disc surface produce different reflections of the laser beam. The photodetector inside the CD laser head 7 receives the reflected light and converts it into an electrical signal. After amplification and decoding, the control chip 8 reconstructs the audio signal.

[0044] The control chip 8 includes a decoding chip 11 (SC6137D decoding chip), a storage chip 12 (M12L616416A storage chip or T24C02AEEPROM storage chip), and a Bluetooth MESH gateway 13. The storage chip 12 and the decoding chip 11 are electrically connected. The storage chip 12 stores the CD playback device's operating data, a voice command feature library, and a smart home device control protocol library. The storage chip 12 is connected to the decoding chip 11 via a specific storage interface (such as an SPI interface). When the device is running, the decoding chip 11 can quickly read the operating data in the storage chip 12, such as playback records and device settings. Simultaneously, during voice recognition, it compares real-time voice command features with data in the voice command feature library. When working in conjunction with smart home devices, control commands received from the Bluetooth MESH gateway 13 are used by the decoding chip 11 to search the smart home device control protocol library in the storage chip 12 and match the corresponding control protocol. The Bluetooth MESH gateway 13 and the decoding chip 11 are connected via a serial communication port. The Bluetooth MESH gateway 13 is used to establish a communication connection between the CD player as a Bluetooth gateway and smart home devices to transmit control commands from the smart home devices. The Bluetooth MESH gateway 13 establishes a connection with smart home device nodes in the Mesh network to obtain the network topology and device information. It utilizes the broadcast and routing functions of the Mesh network to communicate and exchange data with the smart home device nodes. For example, when a user wants to control a smart lighting device via voice command, the voice recognition module 9 transmits the command to the control chip 8. The control chip 8 then sends the control command in a specific Mesh protocol format to the Mesh network where the smart lighting device is located via the Bluetooth MESH gateway 13. Upon receiving the command, the smart lighting device executes the corresponding operation.

[0045] The control chip 8 is used to match the corresponding smart home device control protocol according to the control command output by the voice recognition module 9. The control chip 8 is also used to send control signals to the target smart home device through the Bluetooth MESH gateway 13. After receiving the control command output by the voice recognition module 9, the control chip 8 first parses the command content, and then searches for a matching protocol in the smart home device control protocol library of the storage chip 12. After finding the corresponding protocol, the control signal is packaged according to the format supported by the Bluetooth MESH gateway 13 and sent to the Mesh network where the target smart home device is located through the Bluetooth MESH gateway 13, thereby realizing remote control of the smart home device.

[0046] In this embodiment, an RGB ambient light 14 is also included. The RGB ambient light 14 is electrically connected to the control chip 8. The RGB ambient light 14 is used to present corresponding lighting effects according to the working mode of the CD playback device and changes in audio signals, so as to indicate the working status and create an audio atmosphere.

[0047] Specifically, the brightness control of the RGB ambient light 14 is mainly achieved by controlling the current in the light strip. This is achieved by controlling the PWM (Pulse Width Modulation) signal output from the I / O port of the control chip 8 to drive the MOSFET. Different duty cycles correspond to different LED brightness levels. For color control, multiple I / O ports of the control chip 8 drive the MOSFETs to control the R (red), G (green), and B (blue) LED chips. When only R, G, or B is driven, single-color red, single-color green, and single-color blue light can be emitted; driving R, G, and B simultaneously produces white light. By providing any two PWM signals with different duty cycles to R, G, and B, more colors can be achieved. By changing the timing of driving R, G, and B, various color change effects such as flickering and gradation can be achieved. For example, when the device is playing music, the color and flashing frequency of the RGB ambient light 14 can be adjusted by the control chip 8 according to the tempo and melody to create a corresponding atmosphere. Different colors or brightness levels can also be displayed to indicate the status when the device is in different operating modes such as pause, play, or fast forward.

[0048] In this embodiment, an FM transmitter module 16 is also included. The FM transmitter module 16 is electrically connected to the control chip 8. The FM transmitter module 16 is used to receive and transmit FM broadcast signals to realize the FM radio function of the CD playback device.

[0049] Specifically, the module receives FM broadcast signals from the air via an antenna, amplifies and converts the high-frequency FM signal using internal radio frequency circuitry, transforming it into an intermediate frequency signal suitable for processing by the control chip 8. The control chip 8 then demodulates the signal to reconstruct the audio signal for playback. Simultaneously, this module can also modulate local audio signals (such as audio from a CD player) and transmit them via the antenna. Users can then receive and play these audio signals on specific frequencies using FM receivers such as car radios.

[0050] In this embodiment, the control chip 8 further includes a battery protection chip 17 (DW01 battery protection chip) and a charging management chip 18 (TP4056 charging management chip); the accommodating space 5 is also provided with a battery module 10 (18650 lithium battery / polymer battery), and the battery module 10 and the control chip 8 are electrically connected to each other for powering the CD playback device.

[0051] Specifically, the battery protection chip 17 monitors parameters such as voltage and current of the battery module 10. When it detects that the battery voltage is too high (overvoltage), too low (undervoltage), too high (overcurrent), or a short circuit occurs, it quickly cuts off the circuit to prevent battery damage, extend battery life, and ensure the safety of the equipment and the user. The charging management chip 18 comprehensively monitors and manages the charging process of the battery module 10, including monitoring the charging current, voltage, and temperature. In the initial stage of charging, the battery is charged with a constant current. When the battery voltage approaches the full charge voltage, it switches to constant voltage charging to prevent overcharging. At the same time, it monitors the battery temperature in real time. When the temperature is too high, it adjusts the charging current or pauses charging to prevent the battery from being damaged due to overheating.

[0052] In this embodiment, the control chip 8 further includes a mechanism driver chip 19 (YT5901 laser head mechanism driver chip), the CD laser head 7 (M93BG6 CD laser head) and the mechanism driver chip 19 are electrically connected, the mechanism driver chip 19 and the decoding chip 11 (SC6137D decoding chip) are electrically connected, and the mechanism driver chip 19 is used to drive the CD laser head 7.

[0053] Specifically, the mechanism driver chip 19 generates appropriate voltage and current based on the control signals sent by the decoding chip 11, driving the motor in the CD laser head 7 to rotate the disc, and realize actions such as the rotation of the disc, the radial movement (track seeking) and axial movement (focusing) of the laser head, ensuring that the CD laser head 7 can accurately read the data on the disc. For example, when it is necessary to play a disc, the mechanism driver chip 19 controls the motor to drive the disc to rotate at a constant speed, while simultaneously controlling the laser head to move to the correct starting position to begin reading data.

[0054] In this embodiment, the control chip 8 further includes an audio power amplifier chip 20, which is electrically connected to the decoding chip 11 (SC6137D decoding chip). The audio power amplifier chip 20 is used to amplify the audio signal output by the CD playback device.

[0055] Specifically, the audio signal output from the decoding chip 11 has relatively low power and cannot directly drive a high-power speaker or drive the audio system to produce a sufficiently loud sound. The function of the audio power amplifier chip 20 is to amplify the audio signal output from the decoding chip 11, enhance the signal's driving capability, and enable the audio signal to drive a speaker (such as a 4Ω 3W internal magnet speaker) to produce a clear and loud sound, thereby improving the audio playback effect.

[0056] In this embodiment, the control chip 8 further includes an LCD driver chip 21 (HT1621B Holtek LCD driver chip) and an infrared or wireless remote control chip 22; the LCD driver chip 21 and the decoding chip 11 (SC6137D decoding chip) are electrically connected, and the LCD driver chip 21 is used to drive and control the touch / LCD screen configured in the CD playback device; the infrared or wireless remote control chip 22 and the decoding chip 11 (SC6137D decoding chip) are electrically connected, and the infrared or wireless remote control chip 22 is used to control the infrared remote control (433MHz / infrared remote control) configured in the CD playback device.

[0057] Specifically, the LCD driver chip 21 communicates with the decoding chip 11, receiving image data and control signals from the decoding chip 11. It converts these signals into driving signals suitable for display on the LCD screen, controlling the brightness and color of each pixel on the screen to display device status information (such as playing tracks, playback time, volume, etc.) and the user interface (if touch operation is available). The infrared or wireless remote control chip 22 receives infrared signals from the infrared remote control, converts them into electrical signals, decodes them, identifies the button commands pressed by the user on the remote control, and then transmits these commands to the decoding chip 11. The decoding chip 11 executes corresponding device control operations according to the commands, such as play, pause, and track switching, thus achieving remote control of the CD playback device.

[0058] In addition, the infrared remote control can also have built-in voice recognition functionality, transmitted via an infrared / 433MHz chip. Specifically, it receives voice signals via an electret microphone and feeds them to the US513 offline voice recognition chip. The signal is then compared with the commands stored in the GD25Q32ES IG non-volatile flash memory chip. The recognition result can be wirelessly transmitted to the device via the XL4456 315 / 433MHz transmitter chip.

[0059] In this embodiment, a button module 23 and an interface component 15 are also included; the button module 23 is configured with physical buttons exposed on the top of the upper housing 1, the button module 23 is electrically connected to the control chip 8, and the button module 23 is used to control the CD playback device through physical buttons.

[0060] Specifically, the button module 23 consists of multiple microswitches or tactile buttons, each corresponding to a different function, such as play, pause, previous track, next track, and volume adjustment. When a user presses a button, the button's circuit is activated, generating an electrical signal. This signal is transmitted to the control chip 8, which then executes the corresponding operation according to the preset button function logic. The interface component 15 and the control chip 8 are electrically connected. The interface component 15 includes a headphone jack, a USB flash drive interface, an SD card interface, and a Type-C charging interface. The headphone jack (such as a common 3.5mm headphone jack) is used to connect headphones, transmitting the audio signal output by the device to the headphones, allowing users to listen to music without disturbing others. The USB flash drive interface and SD card interface support users connecting external storage devices. The control chip 8 can read audio files from the USB flash drive or music data from the SD card, expanding the device's audio playback sources, allowing music playback even without a CD. The Type-C charging interface is used to connect an external power adapter to charge the device's internal battery module 10. This interface can also be used for data transmission (if supported by the control chip 8), enabling data interaction between the device and other devices such as computers.

[0061] In this embodiment, the back of the lower housing 2 is provided with a desktop bracket 24 and a wall mount bracket 25. The desktop bracket 24 can be folded or rotated and stored on the back of the lower housing 2. When the device needs to be placed on a desktop, the desktop bracket 24 can be unfolded so that the device can be stably placed on the desktop. The angle and structural design of the bracket are ergonomic, making it convenient for users to operate the device and view the device display screen (if applicable). The wall mount bracket 25 can also adopt a foldable or hidden design. When users want to hang the device on the wall to save space, the wall mount bracket 25 can be unfolded and fixed to the wall using expansion screws and other accessories. Then the device can be installed on the wall mount bracket 25, meeting the usage needs of different users in different scenarios.

[0062] In this embodiment, a camera 26 is also included. The camera 26 and the control chip 8 are connected via a Wi-Fi module. The camera 26 is used to acquire environmental information around the CD playback device. The Wi-Fi module is also used to acquire AI large model data from a remote server in real time for real-time interactive dialogue between humans and the device.

[0063] Specifically, camera 26 captures image information around the device through its lens, converts light signals into electrical signals, performs analog-to-digital conversion and image data processing, and then wirelessly transmits the processed image data to control chip 8 via Wi-Fi module. Control chip 8 can analyze and process this image data, for example, to implement security monitoring functions. When abnormal movement is detected, it sends alarm information to the user's mobile phone or other smart terminal via Bluetooth MESH gateway 13 or other network connection methods. It can also be used for intelligent scene linkage, such as automatically adjusting the device's display brightness or the brightness of RGB ambient light 14 according to changes in ambient light.

[0064] In one possible embodiment, the user's voice commands are converted into corresponding control commands by the speech recognition module 9, and the functions of the CD playback device are executed by the control chip 8. Specifically, the input voice is preprocessed and features are extracted using the VAD algorithm to obtain feature vector parameters of the voice commands. The feature vector parameters of the voice commands are then compared with the feature vectors of preset action commands in the speech reference model library using a similarity metric. The highest input feature vector is taken as the output of the recognition result, and the control chip 8 determines and controls other functions of the CD playback device.

[0065] The VAD algorithm samples the original continuous analog signal, converting it into discrete data over time. It performs equally spaced sampling, the basic principle being to apply large quantization intervals to large signals and small quantization intervals to small signals. The converted digital signal is then encoded into binary. The speech reference model library, including acoustic models, language models, and dictionaries, is existing technology and will not be elaborated upon here.

[0066] In one possible embodiment, the CD player and the designated smart home product are connected to the same router network via a Bluetooth gateway; the CD player uploads control commands to a remote server, and the remote server sends the control commands to the designated smart home product.

[0067] Specifically, human voice is converted into corresponding machine commands through voice recognition module 9, and then controlled by control chip 8 to control smart home products. The CD player can be used as a Bluetooth gateway. The CD player and other smart home products are placed on the same router network. Voice commands control the CD player, and the CD player uploads the control commands to a remote server, which then sends the control commands to other smart home products.

[0068] In one possible embodiment, a mobile terminal is used to upload voice control commands to a remote server, and the remote server then sends the voice control commands to a CD playback device to execute the functions of the CD playback device.

[0069] Specifically, CD players can be remotely controlled via mobile devices, such as smartphone apps, to perform player functions. Once the CD player is connected to a remote server, the smartphone app uploads the corresponding control commands to the remote server, which then sends these commands to the CD player to execute its functions.

[0070] In one possible embodiment, a mobile terminal is used to convert the sound signal into an electrical signal, the electrical signal is uploaded to a remote server, the electrical signal is sent to a CD playback device through the remote server, and the CD playback device amplifies the electrical signal and outputs sound.

[0071] Specifically, the mobile app allows users to configure the microphone, enabling them to transmit audio signals into the phone. This audio signal is then played back quickly and completely by the CD player. The mobile device converts the audio signal into an electrical signal, uploads it to a remote server, and then sends it to the CD player. The CD player amplifies the signal and outputs the sound through its speaker.

[0072] In one possible embodiment, data from the CD player and smart home products is directly stored on a remote server. When the CD player and other smart home products connect to the remote server, all their states and actions are directly stored there. Furthermore, a mobile app can view all the data from the CD player and other smart home products via the remote server; in other words, the mobile app can directly access and view the data stored on the remote server.

[0073] In one possible embodiment, the CD player can be used to set alarms, control the CD player to check the weather via voice, and interact with the CD player via voice.

[0074] The CD audio playback process of this utility model is as follows:

[0075] (11) Disc data reading

[0076] Laser Scanning and Signal Conversion: The M93BG6 CD laser head 7 emits a laser beam to illuminate the CD disc. The reflectivity of the disc surface (drilled areas and flat surfaces) differs from that of the flat surface. A photodetector inside the laser head converts the reflected light signal into a weak electrical signal. Because the initial intensity of the electrical signal is low and susceptible to interference, it needs to be processed by the YT5901 laser head mechanism driver chip 19. The signal is first amplified by a low-noise amplifier, then filtered to remove noise, outputting a stable disc data electrical signal, which is transmitted to the SC6137D decoding chip 11 of the control chip 8. The YT5901 laser head mechanism driver chip 19 also receives commands from the control chip 8 to drive the motor assembly of the CD laser head 7. For example, during playback, the control chip 8 sends a "disc rotation + laser head track seeking" command. The driver chip controls the spindle motor to rotate the disc at a constant linear speed, while simultaneously controlling the feed motor to move the laser head radially along the disc, ensuring the laser beam is aligned with the disc's data track for continuous and stable data reading.

[0077] (12) Audio Decoding and Output

[0078] Digital audio decoding: The SC6137D decoding chip 11 receives the disc data electrical signal transmitted by the YT5901 laser head mechanism driver chip 19. It first converts the analog signal to a digital signal via a digital-to-analog converter (ADC), and then decodes it based on the CD audio encoding protocol to extract the original audio data (including left and right channels, sampling rate, bit depth, etc.). During decoding, the storage chip 12 (M12L616416A or T24C02A) provides temporary buffering and protocol support for the decoding algorithm, ensuring decoding efficiency and accuracy.

[0079] Audio power amplification and playback: The decoded digital audio signal is processed by control chip 8 and transmitted to audio power amplifier chip 20. Based on the amplitude and frequency characteristics of the audio signal, this chip enhances the signal driving capability through a power amplification circuit (such as Class D amplification), converting the low-power audio signal into a high-power signal capable of driving a 4Ω 3W internal magnet speaker, causing the speaker's voice coil to vibrate and produce a clear, full sound. Simultaneously, the audio signal can be modulated into an FM broadcast signal (such as the 87-108MHz band) by FM transmitter module 16 and transmitted via antenna for reception and playback by devices such as car radios and FM receivers, expanding the audio output scenarios.

[0080] The voice interaction and smart home linkage process of this utility model is as follows:

[0081] (21) Voice command recognition and conversion

[0082] Voice Acquisition and Preprocessing: The voice recognition module 9 has a built-in high-sensitivity microphone to acquire user voice in real time. Because the acquired voice signal contains environmental noise (such as background noise and electromagnetic interference), the module first removes noise through an adaptive filtering algorithm (such as the least mean square error algorithm), and then performs frame segmentation and windowing processing on the voice (segmenting continuous voice into short frames of 20-30ms and applying Hamming windows, etc.) to prepare for feature extraction.

[0083] Feature extraction and command matching: After preprocessing, the speech signal is processed by the speech recognition module 9 using the Mel-frequency cepstral coefficient (MFCC) algorithm to extract features—mapping the speech signal onto a Mel-frequency scale, calculating the energy of each frequency band, and generating a feature vector. This feature vector is compared with the pre-stored speech command feature library (including command features such as "play CD", "pause", "turn on smart light") in the storage chip 12. The optimal command is matched using algorithms such as Dynamic Time Warping (DTW) and converted into a digital command that can be recognized by the control chip 8, which is then transmitted to the control chip 8 via serial communication.

[0084] (22) Execution of smart home control commands

[0085] Command parsing and protocol matching: After receiving digital commands from the voice recognition module 9, the control chip 8 uses the SC6137D decoding chip 11 to parse the command content (distinguishing between CD playback control, smart home control, etc.). If it is a smart home control command (such as "adjust the living room air conditioner temperature"), the control chip 8 calls the smart home device control protocol library pre-stored in the storage chip 12, matches the corresponding communication protocol (such as Bluetooth MESH protocol, ZigBee protocol adaptation subset) according to the target device of the command (living room air conditioner), and determines the command encoding format (such as the temperature adjustment command code and data bit definition).

[0086] Command transmission and device linkage: Control chip 8 transmits the encoded control commands to Bluetooth MESH gateway 13. Based on the Bluetooth MESH network topology, the gateway sends the commands to the target smart home device (air conditioner) through a broadcast + routing mechanism. After receiving the command, the target device parses and executes it (such as adjusting the temperature), and can provide feedback on the execution status (such as the current temperature and working mode) through the Bluetooth MESH network. This feedback is then sent back to control chip 8 via the gateway, realizing a closed loop of command transmission-execution-feedback and achieving device collaboration.

[0087] The interactive control and display principle of this utility model is as follows:

[0088] (31) Physical buttons and infrared remote control

[0089] Physical button interaction: The physical buttons (such as play, pause, and track skip buttons) of button module 23 are electrically connected to control chip 8. When a button is pressed, the internal contacts of the button close, generating a low-level / high-level transition signal. Control chip 8 detects the signal change through the I / O port and, based on the preset button mapping relationship (such as the play button corresponding to the "CD play / pause" command), triggers the corresponding function to execute, realizing physical interaction.

[0090] Infrared remote control: The 433MHz infrared remote control emits infrared signals (containing button code information). The infrared receiving circuit of the infrared or wireless remote control chip 22 (integrated in the control chip 8 module) receives the signal, converts the infrared light into an electrical signal through a photodiode, and transmits it to the control chip 8 after amplification, filtering, and decoding (identifying the button code). The control chip 8 parses the code and executes the corresponding operation (such as "volume +" or "previous track"), realizing remote non-contact control.

[0091] (32) Screen display driver

[0092] Display data processing: Control chip 8 (SC6137D decoding chip 11) generates device status data (such as playback track name, playback progress, volume value, and smart home linkage status), which is transmitted to HT1621B LCD driver chip 21 via parallel / serial interface. LCD driver chip 21 performs format conversion (adapting to the LCD screen dot matrix structure) and timing control (synchronizing the LCD screen refresh rate) on the data, generating LCD screen driving signals (row scan signals and column data signals).

[0093] Screen Display and Touch Feedback: The HT1621B LCD driver chip 21 applies driving signals to the touch / LCD screen, controlling the grayscale / color display of the screen pixels to present the device status interface. For a touch LCD screen, when the user performs a touch operation (such as sliding to adjust the volume), the screen touch layer converts the pressure / position signal into an electrical signal, which is transmitted to the control chip 8 via the driver chip. The control chip 8 analyzes the signal and executes the corresponding function (such as adjusting the volume), thus realizing a closed-loop touch interaction.

[0094] The power management and safety protection principles of this utility model are as follows:

[0095] (41) Battery power supply and charging

[0096] Battery power supply logic: The DC voltage output from the 18650 lithium / polymer battery is first monitored by the DW01 battery protection chip 17. The protection chip collects battery voltage and current signals in real time. When overvoltage (e.g., exceeding 4.2V), undervoltage (e.g., below 2.75V), overcurrent (e.g., exceeding the battery's rated discharge current), or short circuit is detected, the battery output circuit is quickly cut off to prevent battery damage, equipment failure, and safety hazards. Under normal power supply conditions, the battery voltage, after being regulated by the protection chip, provides a stable DC power supply (e.g., 3.3V, 5V) to the control chip 8 and various functional modules.

[0097] Charging Management Process: The TP4056 charging management chip 18 connects to an external power source (such as a 5V power input via a Type-C charging interface) and the battery. During charging, the chip first detects the battery status (voltage, temperature). If the battery voltage is low, it charges with a constant current (such as 1A). When the battery voltage approaches the full charge voltage (4.2V), it switches to constant voltage charging to ensure the battery is fully charged without overcharging. Simultaneously, the chip monitors the charging temperature in real time. If the temperature is too high (such as exceeding 45℃), it automatically reduces the charging current or pauses charging to ensure charging safety. Charging status data (such as charging current and voltage) is transmitted to the control chip 8 and can be displayed on the screen.

[0098] The principle behind the environmental sensing and extended functions of this utility model is as follows:

[0099] (51) Camera environmental monitoring

[0100] Image Acquisition and Transmission: Camera 26 acquires images of the surrounding environment through its optical lens. The light signal is converted into an electrical signal by an image sensor (such as a CMOS sensor), and then digital image data is generated through analog-to-digital conversion (ADC). After being optimized by the image processing algorithms built into camera 26 (such as noise reduction and white balance correction), the digital image data is transmitted to control chip 8 via a wireless connection established by a Wi-Fi module (such as ESP8266) using the TCP / IP protocol.

[0101] Intelligent scene linkage: After receiving image data, the control chip 8 analyzes environmental information through image recognition algorithms (such as motion detection and light detection based on OpenCV). For example, when the ambient light dims, it automatically controls the RGB ambient light 14 to adjust its brightness and color (such as brightening it and turning it to a warmer tone); when an abnormal moving object is detected, it triggers the security alarm logic, pushes alarm information to the user's mobile terminal through the Bluetooth MESH gateway 13, or links with smart home devices (such as starting the smart camera 26 to record), realizing environmental perception and intelligent response.

[0102] (52) RGB ambient lighting 14-link

[0103] Lighting Effects Driven: The control chip 8 generates control commands for the RGB ambient light 14 based on the device's operating status (e.g., CD playback, pause, fast forward) and audio signal characteristics (e.g., rhythm frequency, melody changes). These commands are implemented via PWM (Pulse Width Modulation) signals—the control chip 8's I / O ports output PWM signals with different duty cycles to drive the red, green, and blue channels of the RGB LEDs respectively. For example, when playing fast-paced music, a high-frequency changing PWM signal is output, causing the RGB LEDs to rapidly switch colors and flash, creating a dynamic atmosphere; when the device is paused, a low duty cycle PWM signal is output, keeping the light softly and constantly lit to indicate the device's status.

[0104] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be understood that, based on the technical concept of the present invention, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present invention, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present invention.

Claims

1. A voice-controlled CD player that can be used in conjunction with smart home systems, characterized in that: It includes an upper housing (1), the rear of which is connected to a lower housing (2), the front of which forms a disc running space (3), and the outer side of which is connected to a disassembly cover plate (4). The upper housing (1) and the lower housing (2) form an accommodating space (5), and the accommodating space (5) is provided with a control component (6) and a CD laser head (7); the control component (6) includes a control chip (8) and a voice recognition module (9); the voice recognition module (9) and the control chip (8) are connected by a serial communication circuit, and the voice recognition module (9) is used to convert the user's voice into device control commands through a preset voice recognition algorithm to execute the function of the CD playback device; the CD laser head (7) and the control chip (8) are electrically connected, and the CD laser head (7) is exposed in the disc running space (3), and the CD laser head (7) is used to install and read CD discs; The control chip (8) includes a decoding chip (11), a storage chip (12), and a Bluetooth MESH gateway (13); the storage chip (12) and the decoding chip (11) are electrically connected, and the storage chip (12) is used to store the operating data of the CD playback device, the voice command feature library, and the smart home device control protocol library; the Bluetooth MESH gateway (13) and the decoding chip (11) are connected via a serial communication circuit, and the Bluetooth MESH gateway (13) is used to establish a communication connection between the CD playback device as a Bluetooth gateway and the smart home device to transmit the control commands of the smart home device; The control chip (8) is used to match the corresponding smart home device control protocol according to the control command output by the voice recognition module (9). The control chip (8) is also used to send control signals to the target smart home device through the Bluetooth MESH gateway (13). After receiving the digital command from the voice recognition module (9), the control chip (8) parses the command content by the decoding chip (11) to distinguish between CD playback control and smart home control. If it is a smart home control command, the control chip (8) calls the smart home device control protocol library pre-stored in the storage chip (12), matches the corresponding communication protocol according to the target device of the command, and determines the command encoding format. The control chip (8) transmits the encoded control command to the Bluetooth MESH gateway (13). Based on the Bluetooth MESH network topology, the gateway sends the command to the target smart home device through a broadcast + routing mechanism. After receiving the command, the target device feeds back the execution status through the Bluetooth MESH network and then sends it back to the control chip (8) through the gateway.

2. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, It also includes an RGB ambient light (14), which is electrically connected to the control chip (8). The RGB ambient light (14) is used to present corresponding lighting effects according to the working mode of the CD playback device and changes in audio signals, so as to indicate the working status and create an audio atmosphere.

3. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, It also includes an FM transmitter module (16), which is electrically connected to the control chip (8). The FM transmitter module (16) is used to receive and transmit FM broadcast signals to realize the FM radio function of the CD playback device.

4. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, The control chip (8) also includes a battery protection chip (17) and a charging management chip (18); the interior of the accommodating space (5) is also provided with a battery module (10), which is electrically connected to the control chip (8) for supplying power to the CD playback device; The battery module (10) and the battery protection chip (17) are electrically connected, and the battery protection chip (17) and the decoding chip (11) are electrically connected. The battery protection chip (17) is used to protect the battery module (10) from overvoltage, undervoltage, overcurrent and short circuit. The battery module (10) and the charging management chip (18) are electrically connected, and the charging management chip (18) and the decoding chip (11) are electrically connected. The charging management chip (18) is used to monitor the charging current, voltage and temperature of the battery module (10).

5. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, The control chip (8) also includes a mechanism driver chip (19), which is electrically connected to the CD laser head (7) and the mechanism driver chip (19), and is electrically connected to the decoding chip (11). The mechanism driver chip (19) is used to drive the CD laser head (7).

6. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, The control chip (8) also includes an audio power amplifier chip (20), which is electrically connected to the decoding chip (11). The audio power amplifier chip (20) is used to amplify the audio signal output by the CD playback device.

7. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, The control chip (8) also includes an LCD driver chip (21) and an infrared or wireless remote control chip (22); the LCD driver chip (21) and the decoding chip (11) are electrically connected, and the LCD driver chip (21) is used to drive and control the touch / LCD screen configured in the CD playback device; the infrared or wireless remote control chip (22) and the decoding chip (11) are electrically connected, and the infrared or wireless remote control chip (22) is used to control the infrared remote control configured in the CD playback device.

8. The CD playback device based on voice control for use in collaborative smart homes according to claim 1, characterized in that, It also includes a button module (23) and an interface component (15); the button module (23) is equipped with physical buttons exposed on the top of the upper housing (1), the button module (23) is electrically connected to the control chip (8), and the button module (23) is used to control the CD playback device through physical buttons; The interface component (15) and the control chip (8) are electrically connected. The interface component (15) includes a headphone jack, a USB flash drive jack, an SD card jack, and a Type-C charging jack.

9. The CD playback device based on voice control and compatible with smart home systems according to claim 1, characterized in that, The lower housing (2) is provided with a desktop bracket (24) and a wall-mounting bracket (25) on its back.

10. The CD playback device based on voice control for use in collaborative smart homes according to claim 1, characterized in that, It also includes a camera (26), which is connected to the control chip (8) via a Wi-Fi module. The camera (26) is used to acquire information about the environment around the CD playback device. The Wi-Fi module is also used to acquire large AI model data from a remote server in real time, so as to enable real-time interactive dialogue between people and devices.

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