Projection control method for karaoke sound equipment and karaoke sound equipment

Abstract

The invention discloses a projection control method for karaoke sound equipment, the karaoke sound equipment comprises a first screen and a second screen, the first screen is a display screen, the second screen is a projection device.The method comprises the steps that after a system is started, projection control mode setting is obtained, the projection control mode comprises a default opening mode, a default closing mode or an automatic detection mode; when the projection control mode is an automatic detection mode, obtaining distance information in multiple directions in front of the projection device; judging whether a projection environment meeting a preset projection condition exists or not based on the distance information; when the judgment result meets the preset projection condition, controlling the second screen to be in an on state; and when the judgment result does not meet the preset projection condition, controlling the second screen to be in a closed state. The invention provides a projection control method for a karaoke sound box and the karaoke sound box, and solves the problem of poor starting and stopping experience of traditional projection.

Description

Technical Field

[0001] This invention relates to the technical field of audio equipment, and more particularly to a projection control method for karaoke audio equipment and a karaoke audio equipment. Background Technology

[0002] With the increasing demand for home and mobile entertainment, karaoke speakers with integrated display and audio functions are gradually gaining popularity among users. Most existing karaoke speakers use LCD screens as the main display window for lyrics and the interface. Some products also integrate projection modules, which can project lyrics and images onto a larger screen or wall, thereby enhancing the user's immersion and interactive experience.

[0003] However, existing karaoke speakers with both screen and projector displays typically activate both modules by default upon power-on. Since both the display and projector are high-power components, simultaneous operation significantly increases overall energy consumption, shortening battery life in outdoor environments and hindering extended use. Furthermore, in certain environments, such as bright outdoor light or confined spaces, the projection function may be ineffective. Keeping the projection on in such conditions not only wastes energy but can also lead to overheating and fan noise, negatively impacting the user experience.

[0004] Therefore, how to intelligently manage the activation status of the screen and projector according to the usage scenario while ensuring user experience, and automatically shut down the projector module in situations where it is not suitable for use, thereby achieving energy saving, reducing consumption and extending battery life, has become a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a projection control method and a karaoke speaker for karaoke speakers, aiming to solve the problem of poor experience in turning traditional projectors on and off.

[0006] The technical solution adopted in the projection control method for karaoke speakers disclosed in this application is: First aspect A projection control method for a karaoke system is provided, the karaoke system including a first screen and a second screen, the first screen being a display screen and the second screen being a projection device, the method comprising: After the system is powered on, the projection control mode settings are obtained, including default on, default off, or automatic detection mode. When the projection control mode is automatic detection mode, distance information in multiple directions in front of the projection device is acquired; Based on the distance information, determine whether there is a projection environment that meets the preset projection conditions; When the judgment result meets the preset projection conditions, the second screen is controlled to be in the open state; When the judgment result does not meet the preset projection conditions, the second screen is controlled to be in a closed state.

[0007] Optionally, the projection conditions include: the projection distance is within the range of 1–4 meters, and the projection angle does not exceed a preset angle threshold.

[0008] Optionally, obtaining distance information in multiple directions includes: The distance data in the left, center, and right directions in front of the projection device is obtained through a TOF sensor.

[0009] Optionally, if the distance data in the left, center, and right directions are all outside the range of 1–4 meters, it is determined that the projection environment does not meet the projection conditions.

[0010] Optionally, when the distance data in at least one direction is within the range of 1–4 meters, the projection angle is calculated based on the distance data, and the calculation result is compared with the preset angle threshold.

[0011] Optionally, after determining that the projection environment meets the projection conditions based on the distance information, the method further includes: The system acquires images of the projection environment captured by the camera, and further determines whether the projection environment meets the preset display conditions based on the images.

[0012] Optionally, determining whether preset display conditions are met based on the projected environment image includes: The projection environment image is divided into multiple regions, and the grayscale information of each region is analyzed. When the grayscale deviation of at least one region exceeds a preset threshold, it is determined that the projection environment does not meet the preset display conditions.

[0013] Optionally, the method periodically executes the projection environment determination step at preset time intervals.

[0014] Optionally, the preset time interval is 200 milliseconds.

[0015] Second aspect A karaoke speaker with a screen and projection is provided, including: First screen; Second screen; Projection control module; Distance detection module; The projection control module is configured to execute the projection control method described in any of the first aspects.

[0016] The beneficial effects of the projection control method for karaoke audio disclosed in this invention are: This invention simultaneously sets up a first screen and a second screen in a karaoke speaker, and introduces a projection control mode setting after the system is powered on. This means the working state of the second screen is no longer fixed, but controlled according to a preset mode and detection results. By acquiring distance information from multiple directions in front of the projection device in automatic detection mode, and determining whether a projection environment meeting preset projection conditions exists based on this distance information, the opening and closing of the projection device corresponds to the actual usage environment, avoiding continuous operation of the projection device in scenarios where projection conditions are not met.

[0017] Furthermore, by periodically performing projection environment checks at preset time intervals, this invention enables the second screen's operating state to dynamically adjust according to changes in the usage environment, eliminating the need for frequent manual intervention by the user. When the second screen is off, the system only maintains the operation of the first screen and audio-related modules, reducing the projector's operating time in unnecessary states, thereby lowering the overall power consumption level in those states and extending the device's usability under battery power.

[0018] This invention introduces a second screen opening and closing control method based on environmental detection, which achieves matching control between the working state of the projection device and the actual use environment without changing the original display and audio function structure of the karaoke speaker. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a karaoke speaker provided in this application; Figure 2 This is a schematic diagram illustrating the execution steps of a projection control method for karaoke audio provided in this application.

[0020] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0021] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0022] It should be noted that embodiments referred to in the specification as "an embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc., may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0023] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0024] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0025] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly. Example

[0026] like Figure 1 As shown, the karaoke speaker in this embodiment includes a first screen and a second screen. The first screen is a display screen used to display the operation interface, lyrics, or image content; the second screen is a projection device used to project image content onto an external display plane. The first screen and the second screen are integrated into the same karaoke speaker body. The speaker body also includes a control module, a distance detection module, a camera, and a projection drive module corresponding to the projection device.

[0027] After the system powers on, both the first and second screens are on. The control module manages the on / off state of the second screen during system operation. Upon system startup, the control module obtains the projection control mode settings, including default on, default off, and automatic detection mode. When the projection control mode is set to default on, the control module keeps the second screen on; when the projection control mode is set to default off, the control module keeps the second screen off; when the projection control mode is set to automatic detection mode, the control module enters an environment-detection-based projection control process.

[0028] In automatic detection mode, the control module acquires distance information in multiple directions in front of the projection device via a distance detection module. The distance detection module includes a Time-of-Flight (TOF) sensor, which acquires distance data in the left, center, and right directions in front of the projection device. The control module receives this distance data and determines the projection environment based on preset projection conditions.

[0029] In this embodiment, the projection conditions include a projection distance within the range of 1–4 meters and a projection angle not exceeding a preset angle threshold. When the distance data in the left, center, and right directions are not within the range of 1–4 meters, the control module determines that the current projection environment does not meet the projection conditions and controls the second screen to remain closed.

[0030] When the distance data in at least one direction is within the range of 1–4 meters, the control module further calculates the spatial relationship between the projection device and the projection surface based on the distance data in the left, center, and right directions, thereby obtaining the projection angle. The control module compares the projection angle with a preset angle threshold. When the projection angle does not exceed the preset angle threshold, the control module determines that the current projection environment meets the projection conditions; when the projection angle exceeds the preset angle threshold, the control module determines that the current projection environment does not meet the projection conditions and controls the second screen to remain closed.

[0031] In this embodiment, the karaoke speaker also includes a camera connected to the control module, used to capture environmental images in front of the projection device. When the distance-based judgment indicates that the current projection environment meets the projection conditions, the control module further acquires the projection environment image captured by the camera and makes further judgments about the projection environment based on the image.

[0032] Specifically, the control module divides the environmental image into multiple regions, analyzes the grayscale information of each region, and compares the grayscale information of each region with the overall grayscale information. When the grayscale deviation of at least one region exceeds a preset threshold, the control module determines that the current projection environment does not meet the display conditions and controls the second screen to remain off; when the grayscale deviation of each region does not exceed the preset threshold, the control module determines that the current projection environment meets the display conditions.

[0033] When the control module determines that the current projection environment meets preset conditions based on a comprehensive judgment of distance information, projection angle, and environmental image, the control module outputs an activation control signal to the projection driver module, putting the second screen into operation. When the comprehensive judgment does not meet the preset conditions, the control module stops outputting drive signals to the projection driver module, keeping the second screen in a closed state. While the second screen is closed, the first screen remains operational, and the karaoke speaker's display and audio functions continue to run.

[0034] In this embodiment, the control module periodically executes a projection environment detection process at a preset time interval of 200 milliseconds. By periodically acquiring distance information in front of the projection device and judging the projection environment, the working state of the second screen is adjusted according to changes in the usage environment.

[0035] Through the above implementation method, the opening and closing of the second screen is related to the environmental conditions in front of the projection device, so that the projection device remains closed when the projection conditions are not met.

[0036] The beneficial effects of the projection control method for karaoke audio disclosed in this invention are: This invention simultaneously sets up a first screen and a second screen in a karaoke speaker, and introduces a projection control mode setting after the system is powered on. This means the working state of the second screen is no longer fixed, but controlled according to a preset mode and detection results. By acquiring distance information from multiple directions in front of the projection device in automatic detection mode, and determining whether a projection environment meeting preset projection conditions exists based on this distance information, the opening and closing of the projection device corresponds to the actual usage environment, avoiding continuous operation of the projection device in scenarios where projection conditions are not met.

[0037] Furthermore, by periodically performing projection environment checks at preset time intervals, this invention enables the second screen's operating state to dynamically adjust according to changes in the usage environment, eliminating the need for frequent manual intervention by the user. When the second screen is off, the system only maintains the operation of the first screen and audio-related modules, reducing the projector's operating time in unnecessary states, thereby lowering the overall power consumption level in those states and extending the device's usability under battery power.

[0038] This invention introduces a second screen opening and closing control method based on environmental detection, which achieves matching control between the working state of the projection device and the actual use environment without changing the original display and audio function structure of the karaoke speaker.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A projection control method for karaoke audio equipment, characterized in that, The karaoke sound system includes a first screen and a second screen, the first screen being a display screen and the second screen being a projection device; the method includes: After the system is powered on, the projection control mode settings are obtained, including default on, default off, or automatic detection mode. When the projection control mode is automatic detection mode, distance information in multiple directions in front of the projection device is acquired; Based on the distance information, determine whether there is a projection environment that meets the preset projection conditions; When the judgment result meets the preset projection conditions, the second screen is controlled to be in the open state; When the judgment result does not meet the preset projection conditions, the second screen is controlled to be in a closed state.

2. The projection control method for karaoke audio as described in claim 1, characterized in that, The projection conditions include: the projection distance is within the range of 1–4 meters, and the projection angle does not exceed a preset angle threshold.

3. The projection control method for karaoke audio as described in claim 2, characterized in that, The acquisition of distance information in multiple directions includes: The distance data in the left, center, and right directions in front of the projection device is obtained through a TOF sensor.

4. The projection control method for karaoke audio as described in claim 3, characterized in that, If the distance data in the left, center, and right directions are all outside the range of 1–4 meters, then the projection environment is determined to not meet the projection conditions.

5. The projection control method for karaoke audio as described in claim 1, characterized in that, When the distance data in at least one direction is within the range of 1–4 meters, the projection angle is calculated based on the distance data, and the calculation result is compared with the preset angle threshold.

6. The projection control method for karaoke audio as described in claim 1, characterized in that, After determining that the projection environment meets the projection conditions based on the distance information, the process further includes: The system acquires images of the projection environment captured by the camera, and further determines whether the projection environment meets the preset display conditions based on the images.

7. A projection control method for karaoke audio as described in claim 6, characterized in that, The step of determining whether the preset display conditions are met based on the projected environment image includes: The projection environment image is divided into multiple regions, and the grayscale information of each region is analyzed. When the grayscale deviation of at least one region exceeds a preset threshold, it is determined that the projection environment does not meet the preset display conditions.

8. The projection control method for karaoke audio as described in claim 1, characterized in that, The method periodically executes the projection environment determination step at preset time intervals.

9. A projection control method for karaoke audio equipment as described in claim 8, characterized in that, The preset time interval is 200 milliseconds.

10. A karaoke sound system, characterized in that, include: First screen; Second screen; Projection control module; Distance detection module; The projection control module is configured to execute the projection control method according to any one of claims 1–9.

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