Projection system

Abstract

The utility model provides a projection system. The projection system comprises a curtain sound box, a projector, a wireless HDMI transmitting module and a wireless HDMI receiving module, the curtain sound equipment comprises a sound equipment assembly, and the sound equipment assembly comprises a sound equipment unit. One end of the wireless HDMI transmitting module is connected with the projector, and the wireless HDMI transmitting module is used for receiving a multi-channel audio signal input into the projector and transmitting the multi-channel audio signal to a sound unit of the curtain sound in a wireless mode; one end of the wireless HDMI receiving module is connected with the sound equipment unit, and the wireless HDMI receiving module is used for receiving the multi-channel audio signals transmitted by the wireless HDMI transmitting module. According to the projection system provided by the invention, audio signal transmission is carried out between the projector and the curtain sound equipment in a wireless mode, so that the connection mode between the projector and the curtain sound equipment is simplified, a home theater with relatively good tone quality is relatively easy to establish, and the user experience of the product is improved.

Description

Technical Field

[0001] The present application belongs to the field of home theater technology, and in particular to a projection system. Background Art

[0002] With the rapid development of projection technology, projectors are becoming increasingly popular, and are used in many everyday situations. Projection screens are one of the most commonly used projector accessories. Used in conjunction with projectors, they are used in settings such as movies, offices, home theaters, and conferences to display images, video files, and other content. The combination of a projection screen and a projector delivers high-quality visuals. Because the sound quality of a projector's built-in speakers is mediocre, achieving high-quality sound often requires a separate, independent speaker system. In most existing projection systems, the speaker system and projection screen are separate, resulting in a disparate audio and visual experience, hindering the user experience. Furthermore, existing projection systems using mid- to long-throw projectors typically rely on the projector's built-in audio system. This, due to the projector's inherent structural layout, results in mediocre audio quality, resulting in a poor audio experience and failing to meet users' growing demand for high-quality audio. Furthermore, the speaker position of mid- to long-throw projectors is too far from the screen, resulting in a disparate audio and visual experience and a poor viewing experience. Summary of the Invention

[0003] The purpose of this application is to overcome the deficiencies of the above-mentioned prior art and to provide a projection system that can provide users with a better sound experience.

[0004] In order to solve the above technical problems, on the one hand, the present application provides a projection system, including a screen speaker, a projector, a wireless HDMI transmitting module, and a wireless HDMI receiving module; the screen speaker includes an audio component, and the audio component includes an audio unit; one end of the wireless HDMI transmitting module is connected to the projector, for receiving a multi-channel audio signal input into the projector and transmitting the multi-channel audio signal to the audio unit of the screen speaker wirelessly; one end of the wireless HDMI receiving module is connected to the audio unit, for receiving the multi-channel audio signal transmitted by the wireless HDMI transmitting module.

[0005] In one embodiment, the projector further includes a decoding module, which is used to decode the multi-channel audio signal according to the number of audio channels. The decoding module is connected to the wireless HDMI transmitting module and sends the decoded multi-channel audio signal through the wireless HDMI transmitting module.

[0006] Furthermore, the audio component also includes a battery unit, which is spliced and connected to the audio unit to supply power to the audio unit.

[0007] In one embodiment, the wireless HDMI transmitting module is integrated into the projector and / or the wireless HDMI receiving module is integrated into the audio unit.

[0008] In one embodiment, the projection system further includes a bass speaker, which is connected to the audio unit and is used to receive the low-frequency audio signal in the multi-channel audio signal.

[0009] In one embodiment, the projection system further includes a bass speaker connected to the projector and configured to receive the low-frequency audio signal separated by the decoding module.

[0010] In one embodiment, a sky speaker unit with a sound outlet facing downward is provided on the bottom wall or side wall of the projector, and the sky speaker unit is connected to the audio unit for receiving high-frequency audio signals in the multi-channel audio signal.

[0011] In one embodiment, a sky speaker unit with a sound outlet facing downward is provided on the bottom wall or side wall of the projector, and the sky speaker unit is used to play the high-frequency audio signal in the multi-channel audio signal; the audio signal processing module sends the high-frequency audio signal in the audio signal to the sky speaker unit.

[0012] In one embodiment, the projector has a built-in battery unit for powering the projector.

[0013] In one embodiment, the audio component includes multiple audio units, at least one of which is connected to or internally integrated with a wireless HDMI receiving module, which receives the multi-channel audio signal sent by the projector and forwards it to other audio units.

[0014] The projector and screen speakers in the projection system provided by this application transmit audio signals wirelessly, which simplifies the connection method between the projector and the screen speakers, makes it easier to build a home theater with good sound quality, and improves the user experience of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a schematic diagram of a projection system in one embodiment of the present application;

[0017] Figure 2 is a schematic diagram of a projection system in another embodiment of the present application;

[0018] Figure 3 is a schematic diagram of a projection system in yet another embodiment of the present application;

[0019] Figure 4 is a schematic diagram of a projection system in yet another embodiment of the present application;

[0020] Figure 5 is a schematic diagram of a projection system in yet another embodiment of the present application;

[0021] Figure 6 is a schematic diagram of a projection system in yet another embodiment of the present application;

[0022] Figure 7 It is a schematic diagram of an audio component in one embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0025] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present application are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.

[0026] In this application, a wireless HDMI transmitter module refers to a wireless transmitter module that can transmit ARC and / or eARC signals, and a wireless HDMI receiver module refers to a wireless receiver module that can receive ARC and / or eARC signals. The wireless HDMI transmitter module and wireless HDMI receiver module can replace wired HDMI cables to provide high-quality wireless audio signal transmission.

[0027] Please refer to Figure 1, which shows a schematic diagram of a projection system 100 according to an embodiment of the present application, wherein the projection system 100 includes a screen speaker 10, a projector 20, a wireless HDMI transmitter module 40, a wireless HDMI receiver module 30, and a bass speaker 50. One end of the wireless HDMI transmitter module 40 is connected to the projector 20, and is used to receive the multi-channel audio signal input to the projector 20 and transmit it to the audio component 11 of the screen speaker 10 via wireless means; one end of the wireless HDMI receiver module 30 is connected to the audio component 11 of the screen speaker 10, and is used to receive the multi-channel audio signal transmitted by the wireless HDMI transmitter module 40 and transmit it to the audio unit. In this embodiment, after receiving the video source file, the projector 20 sends the image signal therein to the optical engine for processing, and then projects it onto the screen of the screen speaker through the projection lens. The multi-channel audio signal therein is sent to the audio unit of the audio component 11 of the screen speaker 10 through the wireless HDMI transmitter module 40 and the wireless HDMI receiver module 30. The audio unit decodes the multi-channel audio signal according to the number of speakers, and then sends the processed audio signal to the corresponding speakers, such as sending the low-frequency audio signal to the bass speaker 50, and sending the mid- and high-frequency audio signals to the front speakers of the audio unit for playback. In a preferred embodiment, the audio unit in the audio component 11 and the bass speaker 50 are connected to each other via a wireless audio signal. The audio unit of the audio component 11 sends the low-frequency audio signal to the bass speaker via a wireless method, thereby realizing wireless audio signal transmission between each unit in the projection system, simplifying the cables required to connect the projection system 100 and improving the user experience.

[0028] In addition, the audio assembly 11 further includes an audio unit 111 and a battery unit 112. The battery unit 112 is spliced and electrically connected to the audio unit 111 to supply power to the audio unit 111. Thus, the entire projection system reduces one power line.

[0029] Furthermore, the projector 20 has a built-in battery unit that can be used to power the projector 20. At this point, there is no need to connect any cables in the projection system, which greatly simplifies the projection system construction process and makes it convenient for users to move the projection system to outdoor use as needed.

[0030] It should be noted that the projection system 100 in this embodiment may not include the subwoofer 50. Furthermore, the audio component 11 may be mounted on a screen audio bracket as shown, or the audio component 11 may be incorporated into the screen audio bracket. Furthermore, the audio component 11 may include multiple audio units, at least one of which is connected to a wireless HDMI receiver module 30, which then forwards audio to other audio units via wired or wireless means.

[0031] In addition, the bass speaker 50 may be directly connected to the projector 20 instead of being connected to the audio unit; wherein the projector 20 includes a decoding module (not shown in the figure), which is used to separate the multi-channel audio signal according to different frequency ranges. The decoding module is connected to the wireless HDMI transmitting module 40, and the multi-channel audio signals after classification processing are sent to the corresponding speaker units through the wireless HDMI transmitting module respectively, for example, the low-frequency band audio signal is sent to the bass speaker, and the mid-high frequency band audio signal is sent to the audio unit.

[0032] Please refer to Figure 2 , which shows a schematic diagram of a projection system 200 in another embodiment of the present application, wherein the projection system 200 includes a screen speaker 10, a projector 20, a wireless HDMI transmitter module 40, a wireless HDMI receiver module, and a bass speaker 50, wherein the screen speaker 10 also includes an audio component 11. One end of the wireless HDMI transmitter module 40 is connected to the projector 20, and is used to receive the multi-channel audio signal input to the projector 20 and transmit it to the audio unit of the audio component 11 via wireless means; the wireless HDMI receiver module is integrated into the audio unit (not shown in the figure) and is used to receive the audio signal transmitted by the wireless HDMI transmitter module 40. In this embodiment, after receiving the video source file, the projector 20 sends the image signal therein to the optical engine for processing, and then projects it onto the screen of the screen speaker 10 through the projection lens. The multi-channel audio signal therein is sent to the audio unit of the audio component 11 through the wireless HDMI transmitter module 40. The audio unit of the audio component 11 analyzes and processes the audio signal and sends the audio signals of different frequency bands to the corresponding speakers, such as sending the low-frequency audio signal to the bass speaker 50 and sending the medium and high-frequency audio signals to the speakers of the audio component 11 for playback. In a preferred embodiment, the audio component 11 and the bass speaker 50 are connected by wireless audio signals. The audio component 11 can send the low-frequency audio signal to the bass speaker 50 by wireless, thereby realizing wireless audio signal transmission between each unit in the projection system, simplifying the cables required to build the projection system 100 and improving the user experience.

[0033] In addition, please refer to Figure 7 The audio assembly 11 includes an audio unit 111 and a battery unit 112. The battery unit 112 is electrically connected to the audio unit 111 and is used to power the audio unit 111, thereby eliminating one power cord from the entire projection system. Furthermore, the projector 20 has a built-in battery unit that can be used to power the projector 20. This eliminates the need for any cables in this projection system, greatly simplifying the projection system setup process and making it easier for users to move the projection system outdoors as needed.

[0034] Please refer to Figure 3 , which is a schematic diagram of a projection system 300 in another embodiment of the present application. The projection system 300 in this embodiment is Figure 2 The difference between the projection system 200 and the projection system 200 is that the wireless HDMI transmitting module is integrated into the projector 20, and the wireless HDMI receiving module 30 is externally connected to the audio component 11 of the screen audio 10. The other contents are the same and will not be repeated here.

[0035] Please refer to Figure 4 , which is a schematic diagram of a projection system 400 in another embodiment of the present application. The projection system 400 in this embodiment is Figure 1 The difference between the projection system 100 in FIG. 1 and FIG. 2 is that the wireless HDMI transmitting module is integrated into the projector 20 , and the wireless HDMI receiving module 30 is integrated into the audio component 11 of the screen audio 10 . Other contents are the same and will not be repeated here.

[0036] Please refer to Figure 5 , which shows a schematic diagram of a projection system 500 in another embodiment of the present application, wherein the projection system 500 includes a screen speaker 10, a projector 20, a wireless HDMI transmitter module, a wireless HDMI receiver module, and a bass speaker 50. The screen speaker 10 includes an audio component 11, wherein the wireless HDMI transmitter module is integrated into the projector 20, and the wireless HDMI receiver module is integrated into the audio component 11. A sky speaker unit 21 is provided on the bottom wall or side wall of the projector 20, and the sound outlet of the sky speaker unit 21 is set downward. It should be noted that the sound outlet of the sky speaker unit 21 can be vertically downward, or it can be inclined downward to emit sound waves at a certain angle.

[0037] In this embodiment, projector 20 receives video source data from a media database, sends the image signal therein to an optical machine for processing, and then projects it onto the screen of screen speaker 10. It also wirelessly sends the multi-channel audio signal therein to the audio component 11. The audio component 11 analyzes and processes the multi-channel audio signal, wirelessly sends the high-frequency audio signal therein to the sky speaker unit 21, wirelessly sends the low-frequency audio signal therein to the subwoofer, and wirelessly sends the mid-frequency audio signal to the speaker of the audio unit for playback. In this embodiment, the projector also includes a wireless HDMI receiving module that can be used to receive the high-frequency audio signal sent by the audio unit.

[0038] Alternatively, the projector 20 further includes a decoding module (not shown in the figure), which receives video source data from a media database, sends the image signal therein to an optical machine for processing, and then projects the image signal therein onto the screen of the screen speaker 10, performs frequency division processing on the multi-channel audio signal therein, sends the high-frequency band audio signal to the sky speaker unit 21, and sends the audio signals of other frequency bands to the audio unit. After receiving the audio signal, the audio unit sends the low-frequency band audio signal therein to the bass speaker 50 wirelessly, and then processes and plays the mid-frequency band audio signal; or the decoding module of the projector 20 performs frequency division processing on the multi-channel audio signal, sends the high-frequency band audio signal to the sky speaker unit 21, sends the mid-frequency band audio signal to the audio unit wirelessly, and sends the low-frequency band audio signal to the bass speaker 50 wirelessly.

[0039] This application arranges a sky speaker unit on the bottom wall or side wall of the projector and interacts audio data with the audio unit. On the one hand, the audio unit can make up for the technical problem of the small internal space of the projector and poor sound quality. On the other hand, the sky speaker unit is arranged on the bottom wall or side wall of the projector to make up for the technical problem that the existing audio system cannot provide direct sky sound.

[0040] In addition, reference Figure 6 The sky speaker unit 21 can also be embedded in the interior of the projector, for example, a groove is provided on the bottom wall of the projector 20, and the sky speaker unit is accommodated in the groove. In addition, a direction adjustment mechanism can also be provided to adjust the direction of the sound outlet of the sky speaker unit.

[0041] It should be noted that the projector in this application can be a medium-to-long-focus projector set at a certain distance from the screen and audio, or a short-focus projector set near the screen and audio.

[0042] In addition, the projector in the present application can be mounted on a ceiling or placed on a bracket. In the embodiment where the projector is placed on a bracket, the support unit of the bracket preferably does not block the structure of the sound outlet of the projector's sky speaker unit.

[0043] Existing external audio systems either require a wired connection, which is inconvenient to run throughout the home. For wireless audio, the only option currently available is traditional Bluetooth. However, this solution suffers from insufficient bandwidth (typically only 1-3 Mbps), failing to meet the increasingly common demand for multi-channel audio transmission. Furthermore, long latency (typically greater than 200mS) can lead to audio and video desynchronization, severely impacting the viewing experience. The wireless HDMI transmitter and receiver modules in the projection system provided in this application utilize a 5.2+5.8G dual-mode design, offering exceptional interference resistance. The dual-mode 4+4=8 Mbps bandwidth supports 5.1-channel transmission simultaneously, with each channel supporting 48k / 24bit (1.15 Mbps), for a maximum of 7.1 channels. The system also offers ultra-low latency of less than 22mS.

[0044] It's important to note that a multi-channel audio signal is one that contains multiple independent audio channels. These channels are used by different speakers or loudspeakers to create a surround sound or three-dimensional spatial audio experience. Common multi-channel audio formats include 5.1-channel, 7.1-channel, Dolby Atmos, and DTS.

[0045] The projection system provided in this application can, on the one hand, solve the problem of poor sound quality of the projector's built-in audio system in the existing projection system; on the other hand, it can solve the problem that the existing audio system cannot provide direct sky sound; and it can also avoid the problem of poor user experience caused by connecting the audio system via wire.

[0046] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A projection system, characterized in that: It includes a screen speaker, a projector, a wireless HDMI transmitting module, and a wireless HDMI receiving module; the screen speaker includes an audio component, and the audio component includes an audio unit; one end of the wireless HDMI transmitting module is connected to the projector, and is used to receive the multi-channel audio signal input to the projector and transmit the multi-channel audio signal to the audio unit of the screen speaker via wireless mode; one end of the wireless HDMI receiving module is connected to the audio unit, and is used to receive the multi-channel audio signal transmitted by the wireless HDMI transmitting module.

2. The projection system according to claim 1, wherein: The projector also includes a decoding module, which is used to decode the multi-channel audio signal according to the number of audio channels. The decoding module is connected to the wireless HDMI transmitting module and sends the decoded multi-channel audio signal through the wireless HDMI transmitting module.

3. The projection system according to claim 1, wherein: The audio component further includes a battery unit, which is spliced and connected to the audio unit for supplying power to the audio unit.

4. The projection system according to claim 1, wherein: The wireless HDMI transmitting module is integrated into the projector and / or the wireless HDMI receiving module is integrated into the audio unit.

5. The projection system according to claim 1, wherein: The projection system further includes a bass speaker box connected to the audio unit and configured to receive a low-frequency audio signal in the multi-channel audio signal.

6. The projection system according to claim 2, wherein: The projection system further includes a bass speaker connected to the projector and configured to receive the low-frequency audio signal separated by the decoding module.

7. The projection system according to claim 1, wherein: A sky speaker unit with a sound outlet facing downward is provided on the bottom wall or side wall of the projector, and the sky speaker unit is connected to the audio unit for receiving high-frequency audio signals in the multi-channel audio signals.

8. The projection system according to claim 2, wherein: A sky speaker unit with a sound outlet facing downward is provided on the bottom wall or side wall of the projector, and the sky speaker unit is used to play the high-frequency audio signal in the multi-channel audio signal; the audio signal processing module sends the high-frequency audio signal in the audio signal to the sky speaker unit.

9. The projection system according to claim 1, wherein: The projector is equipped with a built-in battery unit for supplying power to the projector.

10. The projection system according to claim 1, wherein: The audio component includes multiple audio units, at least one of which is connected to or internally integrated with a wireless HDMI receiving module, which receives the multi-channel audio signal sent by the projector and then forwards it to other audio units.

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