A remote controller-based television and set-top box volume cooperative control method and system based on an audio output mode

Abstract

The application provides a television and set top box volume cooperative control method and system based on an audio output mode of a remote controller, and relates to the technical field of cooperative control. The remote controller, the set top box, the television and the Bluetooth earphone are initialized and connected to obtain an initialization connection network. The set top box is combined with the initialization connection network to detect an audio output mode and automatically adjust the volume, output mode detection information is obtained, and audio output mode information is sent to the remote controller according to the output mode detection information. The television and the set top box are respectively controlled and analyzed in volume according to the audio output mode information and user volume key information by the remote controller, and volume cooperative control data is obtained. The application can realize automatic identification of an audio output scene, cooperative control of the volume between devices and intelligent adaptation of the state.

Description

Technical Field

[0001] This invention proposes a method and system for coordinated volume control of a television and a set-top box based on audio output by a remote control, which relates to the field of coordinated control technology, specifically to the field of coordinated volume control of a television and a set-top box. Background Technology

[0002] In home audio-visual systems, the combined use of devices such as televisions, set-top boxes, and Bluetooth headphones is becoming increasingly common. However, in traditional models, the volume button commands on the remote control are sent indiscriminately, failing to automatically match the control target based on the audio output method. When audio is played from the television via HDMI / AV cable or transmitted to headphones via Bluetooth, users need to manually switch control devices, which is cumbersome and prone to ineffective adjustments. Furthermore, the overlapping of volume from the set-top box and the television can easily cause audio distortion, and the volume status cannot automatically adapt when switching scenes, resulting in sudden volume changes that severely impact the user's listening experience. In addition, inconsistent connection protocols between multiple devices and insufficient communication link stability further reduce the accuracy and reliability of volume control. Summary of the Invention

[0003] This invention provides a method and system for coordinated volume control of a television and set-top box based on audio output via remote control, to solve the above-mentioned problems: This invention proposes a method and system for coordinated volume control of a television and a set-top box based on audio output using a remote control. The method includes: S1. Initialize the connection between the remote control, set-top box, TV, and Bluetooth headset to obtain the initial connection network; S2. By combining the set-top box with the initial network connection, audio output mode detection and automatic volume adjustment are performed to obtain output mode detection information. Based on the output mode detection information, audio output mode information is sent to the remote control. S3. Analyze the volume control of the TV and set-top box separately using the remote control based on the audio output method information and the user's volume button information to obtain volume coordination control data.

[0004] Further, S1 includes: Connect the TV and set-top box via HDMI / AV; Connect the set-top box to the Bluetooth headset for wireless communication; Connect the remote control wirelessly to both the TV and the set-top box to establish an initial network connection.

[0005] Furthermore, the set-top box includes an audio detection module, a status notification module, and an automatic volume adjustment module; The audio detection module is used to read the system audio routing information and obtain audio output mode information; The status notification module is used to send the audio output mode information to the remote control and synchronize the volume status information; The automatic volume adjustment module is used to automatically adjust the set-top box volume to a preset volume range in HDMI / AV scenarios.

[0006] Furthermore, the remote control includes a wireless communication module, a scene judgment module, and a key value sending module; The wireless communication module is used to receive the audio output mode information of the set-top box, and generate volume key value information for the key value sending module according to the audio output mode information; The scene judgment module is used to determine whether the audio output method is HDMI / AV synchronous output or Bluetooth separate output based on the audio output method information, and obtain scene judgment recognition information; The key value sending module is used to send volume key value information unidirectionally to the TV or set-top box based on scene judgment and recognition information, thereby obtaining scene key value sending information.

[0007] Furthermore, the television or Bluetooth headset is used to receive the volume key value data of the corresponding device sent by the remote control, and adjust the volume key value of the corresponding device according to the volume key value data to obtain volume key value adjustment data.

[0008] Further, S2 includes: The set-top box performs HDMI / AV or BT audio output mode analysis and automatic volume adjustment on the initial network connection to obtain audio output mode analysis data and its corresponding automatic volume adjustment information. Based on the data analysis of the audio output method, the audio output method information is sent to the remote control.

[0009] Furthermore, the step of analyzing the audio output mode (HDMI / AV or BT) and automatically adjusting the volume of the initial connection network via the set-top box to obtain audio output mode analysis data and its corresponding automatic volume adjustment information includes: When the network connection is initialized as an HDMI / AV connection and audio is output, the volume will be automatically adjusted to the preset volume range; When the initial network connection is set to HDMI / AV, but the audio is output to the Bluetooth headset via BT, determine the volume adjustment method; When the volume adjustment mode is set to automatic volume adjustment, the volume will be automatically adjusted to the preset volume range and then automatically switched back to the original volume value before adjustment. When the volume adjustment mode is not set to automatic volume adjustment, the volume is maintained.

[0010] Further, S3 includes: Obtain user volume button information, and determine the volume adjustment device based on the user volume button information and audio output method information; The user's volume button information is sent to the volume adjustment device for volume adjustment, thereby obtaining volume coordination control data.

[0011] Further, the step of sending the user's volume button information to the volume adjustment device for volume adjustment and obtaining volume coordination control data includes: When the volume control device is a television, the user's volume button information is sent to the television to adjust the television volume and obtain the television volume adjustment data. When the volume adjustment device is a set-top box, the user's volume button information is sent to the set-top box to adjust the set-top box volume and obtain the set-top box volume adjustment data. The volume adjustment data of the TV and the set-top box are the volume coordination control data.

[0012] Furthermore, the system includes: The control connection module is used to initialize the connection of the remote control, set-top box, TV and Bluetooth headset and obtain the initial connection network; The scene judgment module is used to detect the audio output mode and automatically adjust the volume by combining the set-top box with the initial network connection, obtain the output mode detection information, and send the audio output mode information to the remote control according to the output mode detection information. The volume control module is used to analyze and control the volume of the TV and set-top box separately based on the audio output method information and the user's volume button information via the remote control, and obtain volume coordination control data.

[0013] The beneficial effects of this invention are as follows: This invention solves the technical problem that in traditional multi-device audio playback scenarios, the volume buttons on the remote control need to be adjusted separately for different devices, which is cumbersome and prone to ineffective adjustments; it realizes the automatic matching of audio output scenarios and volume adjustment objects, ensuring that the remote control only adjusts the devices that affect the final loudness; it improves the intelligence level of volume control in multi-device audio systems and the convenience of user operation, and reduces the negative impacts such as volume distortion and low control efficiency caused by misadjusting non-target devices. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a method for coordinated volume control between a television and a set-top box based on audio output using a remote control. Figure 2 This is a schematic diagram of coordinated regulation; Figure 3 This is a diagram illustrating the initialization of the network connection. Detailed Implementation

[0015] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0016] In one embodiment of the present invention, a method and system for coordinated volume control of a television and a set-top box based on audio output mode using a remote control is proposed. The method includes: S1. Initialize the connection between the remote control, set-top box, TV, and Bluetooth headset, and obtain the initial connection network, such as... Figure 3 As shown; S2. By combining the set-top box with the initial network connection, audio output mode detection and automatic volume adjustment are performed to obtain output mode detection information. Based on the output mode detection information, audio output mode information is sent to the remote control. S3. Using the remote control, analyze the volume adjustment of the TV and set-top box separately based on the audio output method information and the user's volume button information to obtain coordinated volume control data, such as... Figure 1 As shown.

[0017] Simple examples include: The set-top box's built-in audio detection module reads and parses the system audio routing information by combining the system audio driver layer interface with hardware status register detection. The specific execution steps are as follows: The audio detection module calls the low-level API of the audio subsystem of the set-top box embedded system (such as Linux / Android) (such as ALSA / OpenSL ES interface) to obtain the device node identifier and data flow parameters of the audio output. The device node identifier is HDMI / AV audio output node (default identifier is AUDIO_DEV_HDMI / AV) and Bluetooth audio output node (default identifier is AUDIO_DEV_BT). Synchronously read the set-top box hardware layer audio path status register, detect the audio transmission enable bit of the HDMI / AV interface and the audio link connection status bit of the Bluetooth module, and obtain the hardware-level path on / off status. The audio detection module cross-validates the software layer device node information with the hardware layer register status. If the software layer audio data flow is to an HDMI / AV device node and the hardware layer HDMI / AV audio transmission enable bit is high, it is determined to be an HDMI / AV synchronous output scenario. If the software layer audio data flow is to a Bluetooth device node and the hardware layer Bluetooth audio link connection status bit is high, it is determined to be a Bluetooth separate output scenario. The audio detection module encapsulates the determined scene results into standardized scene identification data (data format is JSON, including scene type, detection time, and hardware verification status), stores it in the local temporary data area of ​​the set-top box, and sends a data update trigger signal to the status notification module at the same time.

[0018] By employing a dual mechanism of software-level API reading and hardware-level register verification, misjudgments of scenarios caused by system anomalies in single-software detection are avoided, thereby improving the accuracy and stability of audio output mode detection. Standardized scene identification data ensures communication compatibility with the status notification module and remote control, reducing the probability of data parsing errors.

[0019] The implementation of audio output mode switching trigger conditions, route modification, and status notification includes: The three core triggering conditions for switching audio output modes: The set-top box audio subsystem has a preset event monitoring thread that monitors hardware connection status and user operation commands in real time. It will trigger an audio output mode switch if any of the following conditions are met: When the Bluetooth connection status between the Bluetooth headset and the set-top box changes (such as the Bluetooth headset pairing for the first time, disconnection, or Bluetooth link reconnection), the Bluetooth module sends a hardware status interrupt signal to the audio subsystem. Users can manually switch audio output modes by sending commands through the set-top box panel buttons, the set-top box app, or the dedicated scene switching button on the remote control. The commands are received by the set-top box wireless communication module and forwarded to the audio subsystem. When the set-top box detects an interruption in the audio / video transmission of the HDMI / AV interface (such as unplugging or plugging in the HDMI cable or powering off the TV), the hardware status register sends a path interruption signal to the audio subsystem and automatically switches to the Bluetooth separate output scenario (if the Bluetooth headset has been paired).

[0020] After receiving the switching trigger signal, the set-top box audio subsystem quickly modifies the audio route through the system audio policy manager. The steps are as follows: The audio policy manager pauses the current audio data transmission and saves the current volume parameters (including master volume and channel balance) to the local non-volatile storage area to avoid volume loss during switching. Based on the target scenario, the audio path switching driver interface is called to disable the driver enable of the current audio output path and enable the driver enable of the target audio output path, thus completing the redirection of the audio data flow in the software layer. Synchronously modify the path selection bit of the hardware layer audio path selection register to complete the switching of hardware-level audio signals and ensure the consistency of software and hardware routing. Resume audio data transmission, invoke the automatic volume adjustment module, and complete the volume adaptation for the target scenario according to the preset rules in the original manual (adjust to 80% or 90% for HDMI / AV scenarios, and restore / maintain the original volume for Bluetooth scenarios).

[0021] After receiving the scene update trigger signal from the audio detection module, the status notification module sends a status notification to the remote control via a low-latency wireless communication protocol (Bluetooth / StarFlash protocol paired with the remote control), specifically: The status notification module reads standardized scene identifier data from the set-top box's local temporary data area, adds a switching identifier (to distinguish between initial detection and scene switching) and volume adaptation results, and encapsulates it into a notification data packet; The notification data packet is sent using a transparent transmission mode and a heartbeat retransmission mechanism: after the first transmission, a 500ms heartbeat timer is started. If no reception confirmation signal is received from the remote control, the packet is automatically retransmitted. The number of retransmissions does not exceed 3 to ensure that no notification data is lost. After receiving and parsing the notification data packet, the remote control sends a confirmation signal to the set-top box. Upon receiving the confirmation signal, the status notification module updates the local scene status table, completing a scene switching notification loop. If no confirmation signal is received, the scene status table is marked as unsynchronized, and retransmission is continuously triggered until synchronization is successful.

[0022] Clear trigger conditions cover all scenarios including automatic hardware switching, manual user operation, and system anomaly adaptation, meeting diverse user needs; dual-layer routing modification of software and hardware ensures smooth audio switching without lag or interruption, enhancing the listening experience; low-latency pass-through and heartbeat retransmission mechanisms achieve millisecond-level synchronization of scene states, avoiding misalignment of control caused by the remote control and set-top box scene being out of sync.

[0023] The remote control has a built-in feature extraction module that collects and analyzes multi-dimensional scene features in real time. All feature data is stored in association with the audio output mode identifier. The specific extraction rules are as follows: Read the remote control system clock and extract time period features (6:00 AM, 12:00 PM, 12:00 PM, 6:00 PM, 6:00 AM, 12:00 AM, 12:00 PM, 18:00 PM, 12:00 AM, 12:00 AM, 12:00 AM) and holiday features (determine weekdays / weekends / statutory holidays through the system calendar interface). The data format is timestamp + feature tag. By using the communication link between the set-top box and the remote control, the type of content currently being played on the set-top box (live TV, video-on-demand, music, games, provided by the set-top box's media playback module) is obtained, and content feature tags (such as live TV and music) are extracted. If the remote control has a built-in ambient light sensor / microphone, it will collect ambient light intensity (unit: lux, divided into bright / medium / dark levels) and ambient noise level (unit: dB, divided into quiet / normal / noisy levels) through the sensor; if the remote control does not have a sensor, it will associate environmental characteristics with the user's historical operating habits (such as defaulting to dark and quiet environments during nighttime).

[0024] The preset scene mapping relationship library is a local lightweight rule library, deployed on both the set-top box and the remote control (updated synchronously on both ends), to achieve intelligent matching between audio output methods and control devices, specifically: Based on user habits and common rules for multi-device audio systems, preset basic mapping rules are provided, while user-defined rules are also supported. Rules are stored as triplets of feature combinations, audio output methods, and control devices. Examples of basic mapping rules include: during evening hours, when playing video content, and in quiet environments, with Bluetooth separate output, the control device is set to the set-top box and the headphone volume is set to low by default; during daytime hours, when playing live content, and in noisy environments, with HDMI / AV output, the control device is set to the TV and the TV volume is set to high by default; during holidays, when playing music content, and in moderate ambient light, with Bluetooth separate output, the control device is set to the set-top box and channel balance settings are retained. Users can manually add, modify, or delete custom rules via the remote control or the set-top box's accompanying app. Custom rules use the same triplet storage format as the basic mapping rules.

[0025] After receiving the audio output mode information, the remote control scene determination module extracts the current real-time scene features and uses a feature similarity matching algorithm to search for the triplet with the highest similarity to the current feature combination in a preset mapping relationship library. If the similarity is ≥80%, the control device rule for that triplet is invoked; if the similarity is <80%, the basic default mapping rule from the original manual is invoked (HDMI / AV corresponds to the TV, Bluetooth corresponds to the set-top box). The feature similarity matching algorithm mainly compares the overlap of feature labels in three dimensions: time, content, and environment. Each dimension has equal weight, and the higher the overlap, the higher the similarity.

[0026] The remote control has a built-in anomaly monitoring and correction module. It dynamically optimizes the mapping relationship through operation behavior analysis and state consistency verification. The specific steps are as follows: After the remote control sends the volume control command, it does not receive an execution feedback signal from the target device. Under the same audio output method, the user manually switches the control device 3 times in a row (such as the user manually selecting the control set-top box in the HDMI scenario). The audio output modes of the set-top box and remote control remained out of sync for 10 seconds. The anomaly monitoring module analyzes the triggered events. If the anomaly is a signal transmission anomaly (such as not receiving execution feedback), it is determined to be a communication anomaly. If the anomaly is a user's operating habits that do not conform to the preset rules (such as continuously manually switching control devices), it is determined to be a rule-related anomaly. For communication-related anomalies: immediately trigger the resynchronization of the set-top box and remote control status, and temporarily switch the communication channel of the control device to ensure normal command transmission; For rule-based anomalies: Automatically extract the feature combination of user manual operation, audio output mode, and control device triplet, add it to the user-defined rule area of ​​the preset mapping relationship library, and set the matching priority of the rule to the highest, overriding the basic mapping rule; Every day at midnight, the remote control automatically optimizes the preset mapping relationship library, deleting custom rules that have not been matched within 30 days to ensure the library is lightweight. At the same time, it synchronizes user-defined rules to the set-top box to achieve consistency between the two ends and avoid control anomalies caused by differences in the two ends.

[0027] Multi-dimensional scene feature extraction makes the mapping relationship more in line with the user's actual usage habits, breaking the limitations of fixed mapping; a lightweight local rule base ensures millisecond-level response of feature matching, without cloud dependence, and improves the intelligence level of the device when used offline; anomaly monitoring and dynamic correction realize the self-optimization of the mapping relationship, without the need for manual configuration by the user, further improving the convenience of operation and completely solving the problem of ineffective control caused by mapping misalignment.

[0028] The working principle and technical effect of the above technical solution are as follows: by detecting the audio output through the set-top box, a scene notification is sent to the remote control, and the remote control only adjusts the devices that affect the final loudness, thus avoiding invalid operations.

[0029] When the TV is playing audio from the set-top box, use the "Volume + / " buttons to adjust the TV volume; When playing audio from a set-top box using wireless headphones, use the "Volume + / " buttons to adjust the volume of the wireless headphones. Initial connection includes pairing the remote control and set-top box via Bluetooth / StarFlash, and connecting the set-top box to the TV via HDMI / AV cable; The set-top box audio detection module determines the audio output method: Sub-scene A (HDMI / AV synchronous output): The set-top box's automatic volume adjustment module adjusts its own volume to 80% or 90% (e.g., from the current 30% to 85%). The status notification module sends a notification to the remote control that the audio output is HDMI / AV; Sub-scene B (Bluetooth separate output): The set-top box's automatic volume adjustment module determines the following: if the volume was previously adjusted in an HDMI / AV scenario, it restores the volume to its previous level (e.g., from 85% to 30%); if it was not adjusted, it maintains the current volume. The status notification module sends a notification to the remote control that the audio output is Bluetooth; When the user presses the "Volume + / " button, the remote control scene determination module calls the corresponding key-value library: Sub-scene A: Only send "volume + / " key values ​​to the TV (to adjust the basic loudness), while keeping the set-top box volume at 80% or 90%. Sub-scene B: Only send the "volume + / " key value to the set-top box (to adjust the headphone volume), while keeping the TV volume unchanged; Status Update: The set-top box synchronizes its audio output to the remote control in real time to ensure accurate scene detection, such as... Figure 2 As shown.

[0030] The system initiates an initial connection with the remote control, set-top box, TV, and Bluetooth headset, establishing an interconnected initial connection network. The set-top box, relying on this network, detects the system's current audio output mode in real time, automatically adjusts its own volume accordingly, and sends the detected audio output mode information to the remote control. The remote control receives the audio output mode information and the volume button information triggered by the user, analyzes and matches the corresponding control scenario, performs directional volume control on the TV or set-top box, and outputs coordinated volume control data.

[0031] This invention solves the technical problem that in traditional multi-device audio playback scenarios, the volume buttons on the remote control need to be adjusted separately for different devices, which is cumbersome and prone to ineffective adjustments. It realizes the automatic matching of audio output scenarios and volume adjustment objects, ensuring that the remote control only adjusts the devices that affect the final loudness. It improves the intelligence level of volume control and user operation convenience of multi-device audio systems, and reduces the negative impacts such as volume distortion and low control efficiency caused by misadjusting non-target devices.

[0032] In one embodiment of the present invention, S1 includes: Connect the TV and set-top box via HDMI / AV; Connect the set-top box to the Bluetooth headset for wireless communication; Connect the remote control wirelessly to both the TV and the set-top box to establish an initial network connection.

[0033] The working principle and technical effect of the above technical solution are as follows: a wired audio and video transmission connection between the TV and the set-top box is established through an HDMI / AV cable to ensure stable transmission of audio and video signals; the pairing connection between the set-top box and Bluetooth headphones is completed through wireless communication technology to realize wireless distribution of audio signals; at the same time, wireless communication connections are established between the remote control and the TV and the set-top box respectively, enabling the remote control to send commands to the two types of devices, forming an initial connection network covering all devices.

[0034] This method solves the technical problem of the inability to achieve coordinated volume control among multiple devices due to inconsistent connection methods and unreliable communication links; it realizes the interconnection and interoperability between remote controls, set-top boxes, TVs, and Bluetooth headphones, laying a stable hardware connection foundation for audio output mode detection and directional volume control; it improves the networking compatibility and signal transmission stability of multi-device systems, and reduces the probability of control failure caused by device connection failures.

[0035] In one embodiment of the present invention, the set-top box includes an audio detection module, a status notification module, and an automatic volume adjustment module; The audio detection module is used to read the system audio routing information and obtain audio output mode information; The status notification module is used to send the audio output mode information to the remote control and synchronize the volume status information; The automatic volume adjustment module is used to automatically adjust the set-top box volume to a preset volume range (80%, 90%, to avoid distortion and retain superposition space) in HDMI / AV scenarios.

[0036] The working principle and technical effect of the above technical solution are as follows: The audio detection module built into the set-top box reads the system audio routing information and accurately identifies the current audio signal output path to determine the audio output mode; the status notification module synchronizes the output mode information and volume status information obtained by the audio detection module to the remote control in real time; when the automatic volume adjustment module detects an HDMI / AV synchronous output scenario, it automatically adjusts the set-top box's own volume to a preset range, which avoids signal distortion caused by excessive volume and retains a reasonable volume superposition space.

[0037] This method solves the technical problems of traditional set-top boxes lacking the ability to autonomously identify audio output scenarios and relying on manual operation for volume adjustment; it realizes automatic detection and status synchronization of audio output mode, as well as automatic volume optimization in specific scenarios; it improves the core control capability and intelligence level of set-top boxes in multi-device systems, and reduces the risk of audio distortion caused by improper set-top box volume settings.

[0038] In one embodiment of the present invention, the remote control includes a wireless communication module, a scene judgment module, and a key value sending module; The wireless communication module is used to receive the audio output mode information of the set-top box, and generate volume key value information for the key value sending module according to the audio output mode information; The scene judgment module is used to determine whether the audio output method is HDMI / AV synchronous output or Bluetooth separate output based on the audio output method information, and obtain scene judgment recognition information; The key value sending module is used to send volume key value information unidirectionally to the TV or set-top box based on scene judgment and recognition information, thereby obtaining scene key value sending information.

[0039] The working principle and technical effect of the above technical solution are as follows: The wireless communication module of the remote control receives the audio output mode information sent by the set-top box, providing data support for scene judgment; the scene judgment module identifies whether the current system is in the HDMI / AV synchronous output or Bluetooth separate output scene based on the information, and generates scene judgment recognition information; the key value sending module calls the corresponding key value library according to the scene judgment result, and sends volume key value commands only to the target control device (TV or set-top box) to achieve directional volume adjustment.

[0040] This method solves the technical problem of traditional remote control volume button commands being sent indiscriminately and easily causing ineffective control on non-target devices; it realizes the scenario-specific targeted sending of volume control commands, ensuring that the commands are accurately applied to the devices that affect the final loudness; it improves the scenario adaptability and control accuracy of the remote control, and reduces the probability of misoperation in multi-device scenarios.

[0041] In one embodiment of the present invention, the television or Bluetooth headset is used to receive volume key value data of the corresponding device sent by the remote control, and adjust the volume key value of the corresponding device according to the volume key value data to obtain volume key value adjustment data.

[0042] The working principle and technical effect of the above technical solution are as follows: the TV or Bluetooth headset acts as the execution terminal for volume adjustment, receives volume key value data sent by the remote control in real time that matches itself, and performs volume increase or decrease operation according to the key value information, generates corresponding volume adjustment data, and feeds it back to the system to form closed-loop control.

[0043] This method solves the technical problem of lacking an effective execution terminal after the volume control command is sent, and the control action cannot be implemented; it realizes the accurate execution of volume key value commands, ensuring that the user's volume adjustment needs can be responded to in real time; it improves the command response efficiency and control accuracy of audio playback terminals, and reduces the control failure problem caused by the terminal device not supporting command parsing.

[0044] In one embodiment of the present invention, S2 includes: The set-top box performs HDMI / AV or BT audio output mode analysis and automatic volume adjustment on the initial network connection to obtain audio output mode analysis data and its corresponding automatic volume adjustment information. Based on the data analysis of the audio output method, the audio output method information is sent to the remote control.

[0045] Key features are extracted from audio output method information to obtain key extracted information; The key extracted information is stored, and a default mapping relationship is established between the audio output mode corresponding to the key extracted information and the control device. Perform information anomaly monitoring on the default mapping relationship to obtain abnormal relationship data; The default mapping relationship is adjusted based on the abnormal relationship data to obtain corrected mapping relationship information.

[0046] The process of establishing a default mapping relationship includes extracting scene features from the key feature extraction data to obtain scene feature extraction data (including time features, content features, and environmental features); obtaining a preset scene mapping relationship library; and matching the scene feature extraction data in the key feature extraction data with the preset scene mapping database to obtain the default mapping relationship.

[0047] By obtaining the default mapping relationship, this addresses the problem of relying solely on the set-top box's one-way audio output and the remote control's passive reception without verification, which is prone to scene judgment errors due to signal interference or transmission delays. It also resolves the issue of fixed configurations between audio output methods and control devices, which cannot adapt to complex scene changes such as time, content, and environment, resulting in low matching accuracy of the controlled object. Furthermore, it addresses the problem of the mapping relationship lacking anomaly monitoring and dynamic correction capabilities, which can easily lead to mismatches between the output method and control device during long-term use, causing ineffective volume control.

[0048] This enables scene recognition to be upgraded from single-dimensional detection to device-based collaborative verification, significantly improving the accuracy of scene judgment.

[0049] It achieves the ability to extract scene features such as time, content, and environment, and establish matching relationships by combining them with a preset mapping library, breaking the limitations of fixed mappings and enabling the correspondence between audio output methods and control devices to adapt to diverse usage scenarios.

[0050] It enables timely detection of mapping misalignment issues through an anomaly monitoring mechanism, generates corrective mapping relationships, and ensures that volume control commands always accurately target devices that affect the final loudness, thus avoiding invalid operations.

[0051] It enhances the intelligence and adaptability of multi-device audio systems, reduces negative impacts such as volume distortion and control failure caused by scene misjudgment and mapping misalignment, and optimizes the user experience.

[0052] The working principle and technical effect of the above technical solution are as follows: The set-top box relies on the initial connection network to analyze the output path of the system audio signal, distinguishes between two scenarios: HDMI / AV synchronous output and Bluetooth separate output, and synchronously completes the automatic volume adjustment in the corresponding scenario, generating audio output mode analysis data and automatic volume adjustment information; then the audio output mode analysis data is sent to the remote control.

[0053] This method solves the technical problems of opaque audio output scenarios and inaccurate matching of remote controls to control objects in multi-device systems; it realizes automatic detection of audio output modes, scene classification and status synchronization, providing core judgment basis for subsequent collaborative control; it improves the real-time performance and accuracy of system scene recognition, and reduces the risk of volume control misalignment caused by scene misjudgment.

[0054] In one embodiment of the present invention, the step of analyzing the audio output mode (HDMI / AV or BT) and automatically adjusting the volume of the initial connection network via a set-top box to obtain audio output mode analysis data and its corresponding automatic volume adjustment information includes: When the network connection is initialized as an HDMI / AV connection and audio is output, the volume will be automatically adjusted to the preset volume range; When the initial network connection is set to HDMI / AV, but the audio is output to the Bluetooth headset via BT, determine the volume adjustment method; When the volume adjustment mode is set to automatic volume adjustment, the volume will be automatically adjusted to the preset volume range and then automatically switched back to the original volume value before adjustment. When the volume adjustment mode is not set to automatic volume adjustment, the volume is maintained.

[0055] The working principle and technical effect of the above technical solution are as follows: When the set-top box detects that the audio is output through the HDMI / AV connection, it automatically adjusts its own volume to the preset range; when it detects that the audio is switched to Bluetooth output to Bluetooth headphones, it first determines whether the volume has been adjusted in the HDMI / AV scenario. If so, it restores the volume state before the adjustment. If not, it maintains the current volume unchanged, ensuring reasonable connection of volume state under different output scenarios.

[0056] This method solves the technical problem that the set-top box volume status cannot be automatically adapted when switching audio output scenarios, which can easily lead to sudden volume changes or distortion; it realizes intelligent adaptation and smooth switching of set-top box volume under different audio output scenarios; it improves the scene adaptability of volume adjustment and the consistency of user auditory experience, and reduces the auditory discomfort caused by sudden volume changes during scene switching.

[0057] In one embodiment of the present invention, S3 includes: Obtain user volume button information, and determine the volume adjustment device based on the user volume button information and audio output method information; The user's volume button information is sent to the volume adjustment device for volume adjustment, thereby obtaining volume coordination control data.

[0058] The system receives volume control key information triggered by the user via remote control and reads the currently stored audio output mode based on this information. Based on the audio output method, obtain the correction mapping relationship information and / or the corresponding control device information in the default mapping relationship to obtain the target device information; Send a volume adjustment signal to the target device and simultaneously detect the volume difference between the TV and the set-top box; Adjust the volume in sync based on the volume difference until the volume bar information is consistent, obtain the synchronization adjustment completion command and get its audio output mode identifier.

[0059] When the volume difference exceeds a preset difference threshold, a cross-device collaborative protection mechanism is triggered to synchronize the volume of the TV and set-top box, obtaining synchronization adjustment data. Based on the synchronization adjustment data, the volume bar information of the TV and set-top box is obtained respectively, and the main control volume device and the sub-control volume device are determined based on the volume bar information of the TV and set-top box. When the volume bar information of the main control volume device and the sub-control volume device are consistent, a synchronization adjustment completion command is triggered and its audio output mode identifier is obtained.

[0060] The above solutions address the problem in multi-device audio systems where, after a user triggers volume adjustment, the system only controls the volume of the single device without considering the cumulative effect of volume from multiple devices, leading to volume imbalance or unexpected loudness. They also resolve the issue of a lack of inter-device volume difference monitoring mechanisms during volume adjustment, resulting in inconsistent volume levels between the TV and set-top box, and sudden changes in actual loudness. Furthermore, they address the problem of audio distortion and a fragmented listening experience caused by the absence of cross-device collaborative protection mechanisms when volume differences between multiple devices are too large. Finally, they resolve the issue of insufficient target device recognition accuracy and ineffective control commands due to volume control relying solely on fixed mapping relationships without incorporating calibration mapping information.

[0061] By combining audio output method information with the calibration / default mapping relationship, the system accurately identifies target devices that affect the final loudness, ensuring that volume commands are directed to the core devices and avoiding ineffective adjustments. Real-time detection of the volume difference between the TV and the set-top box triggers a collaborative adjustment mechanism, aligning their volume bars and eliminating auditory discomfort caused by unbalanced volume levels. When the volume difference exceeds a preset threshold, a protection mechanism is automatically activated, adjusting synchronously by differentiating between master and slave control devices to effectively prevent audio distortion and ensure a stable listening experience. Upgrading from single-device control to multi-device collaborative control retains the precision of directional control while overcoming the lack of a collaborative mechanism in traditional solutions. Furthermore, the integration of calibration mapping relationships further enhances control accuracy and reduces experience issues caused by volume asynchrony between devices.

[0062] The working principle and technical effect of the above technical solution are as follows: The remote control obtains the volume button information triggered by the user in real time, and performs scene matching in combination with the audio output mode information sent by the set-top box to accurately determine the target device that needs to be adjusted; the volume button information is sent to the target device, and the device performs the volume adjustment operation, and finally generates volume collaborative control data.

[0063] This method solves the technical problems of lack of coordination in volume control and the need for manual switching of control objects in traditional multi-device audio systems; it realizes the linkage between user operation and audio output scenario, achieving intelligent coordination of volume control; it improves the human-computer interaction experience and control efficiency of multi-device systems, and reduces the complexity of user operation.

[0064] In one embodiment of the present invention, sending the user volume button information to a volume adjustment device for volume adjustment and obtaining volume coordination control data includes: When the volume control device is a television, the user's volume button information is sent to the television to adjust the television volume and obtain the television volume adjustment data. When the volume adjustment device is a set-top box, the user's volume button information is sent to the set-top box to adjust the set-top box volume and obtain the set-top box volume adjustment data. The volume adjustment data of the TV and the set-top box are the volume coordination control data.

[0065] The working principle and technical effect of the above technical solution are as follows: The remote control determines the volume adjustment device based on the scene judgment result. If it is a TV, it sends volume button information to it, drives the TV to complete the volume adjustment and generates TV volume adjustment data; if it is a set-top box, it sends volume button information to it, drives the set-top box to complete the volume adjustment and generates set-top box volume adjustment data; the two types of adjustment data are integrated to form the system's volume collaborative control data.

[0066] This invention solves the technical problems of non-targeted volume control command transmission and mutual interference between volume adjustments of multiple devices; it achieves precise and targeted execution of volume control actions, ensuring that a single operation only acts on the target device; it improves the accuracy and effectiveness of volume control, reduces invalid responses from non-target devices, and ensures stable and controllable audio playback loudness.

[0067] In one embodiment of the present invention, the system includes: The control connection module is used to initialize the connection of the remote control, set-top box, TV and Bluetooth headset and obtain the initial connection network; The scene judgment module is used to detect the audio output mode and automatically adjust the volume by combining the set-top box with the initial network connection, obtain the output mode detection information, and send the audio output mode information to the remote control according to the output mode detection information. The volume control module is used to analyze and control the volume of the TV and set-top box separately based on the audio output method information and the user's volume button information via the remote control, and obtain volume coordination control data.

[0068] The working principle and technical effect of the above technical solution are as follows: Initial connection is established between the remote control, set-top box, television, and Bluetooth headset to build an interconnected initial connection network; the set-top box, relying on this network, detects the current audio output mode of the system in real time, automatically adjusts its own volume, and sends the detected audio output mode information to the remote control; the remote control receives the audio output mode information and the volume button information triggered by the user, analyzes and matches the corresponding control scenario, performs directional volume control on the television or set-top box, and outputs volume coordination control data.

[0069] This invention solves the technical problem that in traditional multi-device audio playback scenarios, the volume buttons on the remote control need to be adjusted separately for different devices, which is cumbersome and prone to ineffective adjustments. It realizes the automatic matching of audio output scenarios and volume adjustment objects, ensuring that the remote control only adjusts the devices that affect the final loudness. It improves the intelligence level of volume control and user operation convenience of multi-device audio systems, and reduces the negative impacts such as volume distortion and low control efficiency caused by misadjusting non-target devices.

[0070] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for coordinated volume control of a television and a set-top box using a remote control based on audio output, characterized in that: The method includes: S1. Initialize the connection between the remote control, set-top box, TV, and Bluetooth headset to obtain the initial connection network; S2. By combining the set-top box with the initial network connection, audio output mode detection and automatic volume adjustment are performed to obtain output mode detection information. Based on the output mode detection information, audio output mode information is sent to the remote control. S3. Analyze the volume control of the TV and set-top box separately using the remote control based on the audio output method information and the user's volume button information to obtain volume coordination control data.

2. The method for coordinated volume control of a television and set-top box based on audio output by a remote control according to claim 1, characterized in that, S1 includes: Connect the TV and set-top box via HDMI / AV; Connect the set-top box to the Bluetooth headset for wireless communication; Connect the remote control wirelessly to both the TV and the set-top box to establish an initial network connection.

3. The method for coordinated volume control of a television and set-top box based on audio output mode using a remote control according to claim 2, characterized in that, The set-top box includes an audio detection module, a status notification module, and an automatic volume adjustment module; The audio detection module is used to read the system audio routing information and obtain audio output mode information; The status notification module is used to send the audio output mode information to the remote control and synchronize the volume status information; The automatic volume adjustment module is used to automatically adjust the set-top box volume to a preset volume range in HDMI / AV scenarios.

4. The method for coordinated volume control of a television and a set-top box based on audio output by a remote control according to claim 2, characterized in that, The remote control includes a wireless communication module, a scene judgment module, and a key value sending module; The wireless communication module is used to receive the audio output mode information of the set-top box, and generate volume key value information for the key value sending module according to the audio output mode information; The scene judgment module is used to determine whether the audio output method is HDMI / AV synchronous output or Bluetooth separate output based on the audio output method information, and obtain scene judgment recognition information; The key value sending module is used to send volume key value information unidirectionally to the TV or set-top box based on scene judgment and recognition information, thereby obtaining scene key value sending information.

5. The method for coordinated volume control of a television and set-top box based on audio output by a remote control according to claim 2, characterized in that, The television or Bluetooth headset is used to receive the volume key value data of the corresponding device sent by the remote control, and adjust the volume key value of the corresponding device according to the volume key value data to obtain volume key value adjustment data.

6. The method for coordinated volume control of a television and a set-top box based on audio output by a remote control according to claim 1, characterized in that, S2 includes: The set-top box performs HDMI / AV or BT audio output mode analysis and automatic volume adjustment on the initial network connection to obtain audio output mode analysis data and its corresponding automatic volume adjustment information. Based on the data analysis of the audio output method, the audio output method information is sent to the remote control.

7. The method for coordinated volume control of a television and a set-top box based on audio output by a remote control according to claim 6, characterized in that, The process of analyzing the audio output mode (HDMI / AV or BT) and automatically adjusting the volume of the initial network connection via the set-top box to obtain audio output mode analysis data and its corresponding automatic volume adjustment information includes: When the network connection is initialized as an HDMI / AV connection and audio is output, the volume will be automatically adjusted to the preset volume range; When the initial network connection is set to HDMI / AV, but the audio is output to the Bluetooth headset via BT, determine the volume adjustment method; When the volume adjustment mode is set to automatic volume adjustment, the volume will be automatically adjusted to the preset volume range and then automatically switched back to the original volume value before adjustment. When the volume adjustment mode is not set to automatic volume adjustment, the volume is maintained.

8. The method for coordinated volume control of a television and a set-top box based on audio output by a remote control according to claim 1, characterized in that, S3 includes: Obtain user volume button information, and determine the volume adjustment device based on the user volume button information and audio output method information; The user's volume button information is sent to the volume adjustment device for volume adjustment, thereby obtaining volume coordination control data.

9. The method for coordinated volume control of a television and a set-top box based on audio output by a remote control according to claim 8, characterized in that, The step of sending the user's volume button information to the volume adjustment device for volume adjustment and obtaining volume coordination control data includes: When the volume control device is a television, the user's volume button information is sent to the television to adjust the television volume and obtain the television volume adjustment data. When the volume adjustment device is a set-top box, the user's volume button information is sent to the set-top box to adjust the set-top box volume and obtain the set-top box volume adjustment data. The volume adjustment data of the TV and the set-top box are the volume coordination control data.

10. A remote control-based volume coordination control system for a television and set-top box using an audio output method, characterized in that, The system includes: The control connection module is used to initialize the connection of the remote control, set-top box, TV and Bluetooth headset and obtain the initial connection network; The scene judgment module is used to detect the audio output mode and automatically adjust the volume by combining the set-top box with the initial network connection, obtain the output mode detection information, and send the audio output mode information to the remote control according to the output mode detection information. The volume control module is used to analyze and control the volume of the TV and set-top box separately based on the audio output method information and the user's volume button information via the remote control, and obtain volume coordination control data.

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