Projection system
By setting up a built-in audio unit in the projector and cooperating with external audio units, the problem of insufficient sound effects of the projection system is solved, high-quality sound effects and flexible sound effects are achieved, and user experience is improved.
Patent Information
- Application Number
- CN202422370308.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the existing projection system, the projector's own audio and sound effects are relatively ordinary, which cannot meet the users' growing demand for high-quality sound effects, affecting the user experience.
The built-in audio unit and an external audio unit are set up in the projector. The audio signal is divided into two channels through the signal processing module and sent to the built-in and external audio units respectively. The built-in audio unit includes a front speaker, a bass passive diaphragm, a first sky speaker, etc., and the external audio unit includes a bass speaker, a surround speaker and a second sky speaker, etc., to achieve the separation and enhancement of multi-band sound effects.
It improves the sound effect experience of the projection system, enhances user flexibility, and allows users to match different number of audio units according to their needs to achieve different sound effects.
Smart Images
Figure CN223246642U_ABST
Abstract
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] A projection system typically refers to a video display system consisting of a projector and a projection screen. Existing video display systems, limited by the projector's inherent structural layout, often have mediocre built-in audio, failing to meet users' growing demand for high-quality audio and hindering user experience. Utility Model Content
[0003] The purpose of this application is to overcome the deficiencies of the above-mentioned prior art and provide a projection system that can improve user experience.
[0004] In order to solve the above technical problems, on the one hand, the present application provides a projection system, including a projector and an external audio unit, the projector being connected to the external audio unit for audio transmission, wherein the projector includes a built-in audio unit and a signal processing module; the signal processing module is respectively connected to the built-in audio unit and the external audio unit for audio transmission, and is used to divide the audio signal of the sound source input to the projector into a first audio signal and a second audio signal, and send the first audio signal to the built-in audio unit and send the second audio signal to the external audio unit.
[0005] Specifically, the built-in audio unit includes a front speaker, and a sound outlet of the front speaker is arranged on the front wall of the projector facing the user.
[0006] Furthermore, the built-in audio unit also includes a bass passive diaphragm and a sound outlet hole arranged on the side wall of the projector and cooperating with the diaphragm.
[0007] Furthermore, the built-in audio unit also includes a first sky speaker, which is arranged on the top wall of the projector, with a sound outlet inclined upward, and is used to process the high-frequency audio signal in the first audio signal.
[0008] Specifically, the front speakers include a center channel speaker, a left channel speaker, and a right channel speaker, and are configured to process the mid-frequency audio signal in the first audio signal.
[0009] Specifically, the external audio unit includes a bass speaker, and the bass speaker is used to process the low-frequency audio signal in the second audio signal.
[0010] Furthermore, the external audio unit also includes a front left surround speaker, a front right surround speaker and / or a rear left surround speaker, a rear right surround speaker, and the front left surround speaker, the front right surround speaker and / or the rear left surround speaker, the rear right surround speaker are used to process the mid-frequency audio signal in the second audio signal.
[0011] Specifically, the front left surround speaker, the front right surround speaker and / or the rear left surround speaker, the rear right surround speaker also includes a second air speaker, which is used to process the high-frequency audio signal in the second audio signal.
[0012] Furthermore, the projector also includes a wireless HDMI transmitting module, the external audio unit includes a wireless HDMI receiving module, the signal processing module is connected to the wireless HDMI transmitting module for audio transmission, and the second audio signal is sent to the external audio unit through the wireless HDMI transmitting module and the wireless receiving module.
[0013] Specifically, the projector is an ultra-short-throw projector.
[0014] The projection system provided in this application can provide a better sound experience for the projection system by setting a built-in audio unit in the projector to cooperate with an external audio unit. On the other hand, the setting of the external audio unit increases the flexibility of the user in using the product. The user can match different numbers of audio units according to needs to achieve different sound effects. 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 block diagram of a projection system in one embodiment of the present application;
[0017] Figure 2 This is a schematic structural diagram of a projection system in one embodiment of the present application;
[0018] Figure 3 It is a structural diagram of a projector in one embodiment of the present application. DETAILED DESCRIPTION
[0019] 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.
[0020] 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.
[0021] 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.
[0022] Please refer to Figure 1 , which is a schematic block diagram of a projection system in an embodiment of the present application. The projection system 100 includes a projector 10 and an external audio unit 20. The projector 10 is connected to the external audio unit 20 for audio transmission. The projector 10 includes a built-in audio unit 11 and a signal processing module 12. The signal processing module 12 is connected to the built-in audio unit 11 and the external audio unit 20 for audio transmission, and is used to split an audio signal input to the projector 10 into a first audio signal and a second audio signal, and send the first audio signal to the built-in audio unit 11 and the second audio signal to the external audio unit 20.
[0023] In one embodiment, the source audio signal is a multi-channel audio signal. The signal processing module 12 separates the multi-channel audio signal into a first audio signal and a second audio signal according to the types of speakers of the built-in audio unit 11 and the external audio unit 20, and then sends the first audio signal and the second audio signal to the built-in audio unit 11 and the external audio unit 20, respectively. Furthermore, if the built-in audio unit 11 includes multiple speakers, it also includes a signal processing module for separating the audio signals of each channel in the first audio signal and sending them to each speaker respectively. Similarly, if the external audio unit 20 includes multiple speakers, the signal processing module 12 separates the second audio signal into multiple audio signals and sends them to the corresponding speakers respectively. Furthermore, if the speaker includes multiple speakers, the speaker also includes a signal processing module for separating the multiple audio signals and sending them to each speaker respectively.
[0024] It should be noted that the projector 10 and the external audio unit 20 can be connected through wired audio transmission, such as through HDMI ARC, HDMI eARC connection, etc., or through wireless audio transmission connection, such as Wi-Fi audio transmission connection, wireless HDMI (Wireless HDMI) connection, etc.
[0025] In the wireless connection embodiment, the projector 10 also includes a wireless HDMI transmitting module (not shown in the figure), the external audio unit 20 includes a wireless HDMI receiving module (not shown in the figure), and the signal processing module 12 is connected to the wireless HDMI transmitting module for audio transmission, and the second audio signal is sent to the external audio unit 20 through the wireless HDMI transmitting module and the wireless receiving module.
[0026] Please refer to Figure 2 , which shows a schematic diagram of the structure of a projection system 200 in one embodiment of the present application, wherein the projection system 200 includes a projector 10, an external audio unit 20, and a screen 30, wherein the external audio unit 20 includes a front right (FR) surround speaker 21, a first bass speaker 22, a rear right (BR) surround speaker 23, a front left (FL) surround speaker 24, a second bass speaker 25, and a rear left (BL) surround speaker 26. In one embodiment, as Figure 3 As shown, the built-in audio unit 10 of the projector 10 includes a front speaker 111, a first sky speaker 112, and a diaphragm 113. When the projector receives a video signal source, it sends the image signal to the optical machine for processing and then projects it onto the screen 30, and divides the audio signal of the sound source into two channels. The first audio signal is sent to the built-in audio unit 10, and the second audio signal is sent to the external audio unit 20. Specifically, the front left (FL) surround speaker 24 and the front right (FR) surround speaker 21 are used to play the main music, ambient sound and sound effects; the rear right (BR) surround speaker 23 and the rear left (BL) surround speaker 26 are located behind the audience to further enhance the ambient sound and positioning sound effects; the second surround speaker 24 is used to play the main music, ambient sound and sound effects; the front right (BR) surround speaker 23 and the rear left (BL) surround speaker 26 are located behind the audience to further enhance the ambient sound and positioning sound effects; the second surround speaker 26 ...FR) surround speaker 23 and the rear left (BL) surround speaker 26 are located behind the audience to further enhance the ambient sound and positioning sound effects; the second surround speaker 26 is used to play the main music, ambient sound and sound effects; the front right (BR) surround speaker 23 and the rear left (BL) surround speaker 26 are located behind the audience to further enhance the ambient sound and positioning sound effects; the second surround speaker A subwoofer 22 and a second subwoofer 25 are used to play low-frequency effects, such as explosions and engine sounds, or only one subwoofer may be provided. The front speaker 111 of the built-in audio unit 10 is usually used to transmit dialogues, making the dialogues clear and audible. The sound outlet of the front speaker 111 is provided on the front wall of the projector 10 facing the audience. The first sky speaker 112 of the built-in audio unit 10 is mainly used to play sound effects from overhead or vertical directions, such as rain, wind, the sound of an airplane flying by, explosions, thunder, etc., to enhance the three-dimensional spatial sense of the sound effects. It should be noted that the three speakers included in the front speakers 111 can all be used to play the center vocal audio signal, with the front right (FR) surround speaker 21 playing the right channel vocal audio signal and the front left (FL) surround speaker 24 playing the left channel vocal audio signal; or the middle one of the three speakers of the front speakers 111 can play the center vocal audio signal, and the left and right speakers play the left and right channel vocal audio signals respectively, the front right (FR) surround speaker 21 plays the right channel background sound audio signal, and the front left (FL) surround speaker 24 plays the left channel background sound audio signal.
[0027] It should be noted that the projection system can also add side surround speakers (SL and SR), located on the left and right sides of the audience, to enhance the immersive feeling and ambient sound effect. Figure 3 As shown, there are 3 speakers: center channel speaker, left channel speaker, and right channel speaker. Figure 3 As shown, the first sky speakers 112 may also be provided on each of the left and right sides of the projector 10 .
[0028] Furthermore, the built-in audio unit 10 of the projector further includes a bass passive diaphragm 113 and a sound outlet (not shown) provided on the side wall of the projector 10 in cooperation with the bass passive diaphragm 113. The passive diaphragm 113 can enhance the bass sound effect when the projector 10 is used alone.
[0029] Specifically, the first sky speaker 112 is disposed on the top wall of the projector 10 , and its sound outlet is tilted upward so that the emitted sound waves can be transmitted to the user after being reflected by the ceiling.
[0030] Furthermore, the front left surround speaker 24, the front right surround speaker 21, and / or the rear left surround speaker 26, the rear right surround speaker 23 further include a second overhead speaker configured to process high-frequency audio signals in the second audio signal. The sound outlet of the second overhead speaker can be positioned upward or downward. When facing upward, the overhead sound is reflected sound waves, while when facing downward, the overhead sound is direct sound waves.
[0031] In one embodiment, the projector is an ultra-short-throw projector, such as a laser TV, whose projection lens is set back to the user, and the projection light enters the user's field of view after being reflected by the screen.
[0032] The projection system provided in the present application can provide a better sound experience for the projection system by setting a built-in audio unit in the projector to cooperate with an external audio unit. On the other hand, the setting of the external audio unit increases the flexibility of users in using the product. Users can match different numbers of audio units according to their needs to achieve different sound effects. In addition, setting a built-in audio unit in the projector can improve the sound effect of the projector itself without using an external audio unit.
[0033] 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: The invention comprises a projector and an external audio unit, wherein the projector is connected to the external audio unit for audio transmission, wherein the projector comprises a built-in audio unit and a signal processing module; the signal processing module is connected to the built-in audio unit and the external audio unit for audio transmission, respectively, and is used to divide the audio signal of the sound source input to the projector into a first audio signal and a second audio signal, and send the first audio signal to the built-in audio unit and send the second audio signal to the external audio unit.
2. The projection system according to claim 1, wherein: The built-in audio unit includes a front speaker, and a sound outlet of the front speaker is arranged on the front wall of the projector facing the user.
3. The projection system according to claim 2, wherein: The built-in audio unit further comprises a bass passive diaphragm and a sound outlet hole arranged on the side wall of the projector and cooperating with the diaphragm.
4. The projection system according to claim 2 or 3, wherein: The built-in audio unit also includes a first sky speaker, which is arranged on the top wall of the projector, with a sound outlet inclined upward, and is used to process the high-frequency audio signal in the first audio signal.
5. The projection system according to claim 2, wherein: The front speakers include a center channel speaker, a left channel speaker, and a right channel speaker, and are used to process the mid-frequency audio signal in the first audio signal.
6. The projection system according to claim 1, wherein: The external audio unit includes a bass speaker, and the bass speaker is used to process the low-frequency audio signal in the second audio signal.
7. The projection system according to claim 5, wherein: The external audio unit also includes a front left surround speaker, a front right surround speaker and / or a rear left surround speaker, a rear right surround speaker, and the front left surround speaker, the front right surround speaker and / or the rear left surround speaker, the rear right surround speaker are used to process the mid-frequency audio signal in the second audio signal.
8. The projection system according to claim 7, wherein: The front left surround speaker, the front right surround speaker and / or the rear left surround speaker, the rear right surround speaker also include a second aerial speaker, which is used to process the high-frequency audio signal in the second audio signal.
9. The projection system according to claim 1, wherein: The projector also includes a wireless HDMI transmitting module, the external audio unit includes a wireless HDMI receiving module, the signal processing module is connected to the wireless HDMI transmitting module for audio transmission, and the second audio signal is sent to the external audio unit through the wireless HDMI transmitting module and the wireless HDMI receiving module.
10. The projection system according to claim 1, wherein: The projector is an ultra-short-throw projector.