Two-way multi-stage audio signal transmission system

Abstract

The utility model discloses a double-channel multi-stage audio signal transmission system, which comprises a plurality of earphone power amplifiers, a plurality of wired earphones and a plurality of Bluetooth signal transmitters, the plurality of earphone power amplifiers are connected in a tree topology structure, two earphone power amplifiers with a signal transmission relationship are in a superior-subordinate relationship, each earphone power amplifier is provided with an input end and a plurality of output ends, the wired earphone is provided with an input end, the Bluetooth signal transmitter is provided with an input end, and the Bluetooth signal transmitter is provided with an output end. And a plurality of output ends of the previous-stage earphone power amplifier are connected with the input ends of one or more next-stage earphone power amplifiers, and / or the input ends of a plurality of wired earphones, and / or the input end of a Bluetooth signal transmitter. The problem that the utilization effect of televisions arranged in business places of coffee, tea, catering and other enterprises is poor is solved, the business places can be kept quiet, and customers in need can hear sounds synchronous with video pictures played by the televisions.

Description

Technical Field

[0001] The utility model relates to the technical field of audio transmission, in particular to a dual-channel multi-level audio signal transmission system. Background Art

[0002] Most of the catering places (such as coffee shops, tea houses, water bars and restaurants, etc.) are equipped with larger TVs as a means of attracting customers. In order to maintain the quiet atmosphere of the business premises, the audio output system of the TV is all turned off, and the TV can only see the video picture, but can not hear the sound synchronized with the video picture. Although the quiet atmosphere of the business premises is maintained, the original intention of adding TVs to attract customers and boost business has not been fully achieved. Especially for customers in the coffee and tea industry, a considerable number of customers are here for leisure and entertainment, and they are here to kill time. The picture of the TV will inevitably attract the attention of the consumers entering the store. However, because the sound synchronized with the TV picture cannot be heard, it is difficult to understand the content of the video picture. The role of setting up TVs in catering places is greatly reduced.

[0003] When televisions are installed in business premises such as coffee, tea and catering companies, how to ensure that consumers can watch the video images on TV while hearing the sound synchronized with the TV images, and fully understand and interpret the content of the TV programs, while maintaining a quiet business atmosphere in the business premises and not disturbing other customers, is a technical problem that needs to be solved urgently. Utility Model Content

[0004] To this end, the utility model provides a dual-channel multi-level audio signal transmission system to solve one or more of the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dual-channel multi-level audio signal transmission system comprises a plurality of headphone power amplifiers, a plurality of wired headphones, and a plurality of Bluetooth signal transmitters; the plurality of headphone power amplifiers are connected in a tree topology structure, and two headphone power amplifiers having a signal transmission relationship are in a superior-subordinate relationship, the headphone power amplifier has an input end and a plurality of output ends, the wired headphones have an input end, and the Bluetooth signal transmitter has an input end, and the plurality of output ends of the headphone power amplifier of the upper level are connected to the input ends of one or more headphone power amplifiers of the lower level, and / or the input ends of a plurality of wired headphones, and / or the input end of one Bluetooth signal transmitter.

[0007] Furthermore, the headphone power amplifier is connected to the headphone jack of the television through a coaxial analog audio signal transmission line.

[0008] Furthermore, the input end of the headphone power amplifier is an input jack, and the output end of the headphone power amplifier is an output jack. The input jack and the output jack of the headphone power amplifier are of the same form. Both ends of the coaxial analog audio signal transmission line, the input end of the wired headset, and the input end of the Bluetooth signal transmitter are plugs, and the plugs are compatible with the input jack and the output jack.

[0009] Furthermore, the headphone power amplifier has 4 or 10 output terminals, and the Bluetooth signal transmitter can match 4 or 10 Bluetooth headphones.

[0010] Furthermore, the dual-channel multi-level audio signal transmission system also includes a coaxial converter or a coaxial audio signal converter, which is used to convert a digital audio signal into an analog audio signal. The coaxial converter or the coaxial audio signal converter has an input jack and an output jack. The input jack of the coaxial converter or the coaxial audio signal converter is connected to the coaxial audio output jack of the TV through a coaxial digital audio signal transmission line, wherein both ends of the coaxial digital audio signal transmission line are plugs, and the output jack of the coaxial converter or the coaxial audio signal converter is connected to the input jack of the headphone power amplifier through a coaxial analog audio signal transmission line.

[0011] The utility model has the following advantages:

[0012] The utility model solves the problem of poor utilization of televisions in business premises of coffee, tea and catering enterprises, so that these business premises (referring to business premises where televisions are installed) can allow customers in need to listen to sounds synchronized with the video images played on the television while maintaining a quiet atmosphere and not affecting the normal consumption of other customers, and can fully understand the content of the video images played on the television, thus changing the current situation in which customers in such places can only watch the television images but cannot hear the television sounds. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0015] Figure 1 A schematic structural diagram of a dual-channel (wired, wireless) multi-level audio signal transmission system provided in Example 1;

[0016] Figure 2 This is a schematic structural diagram of another dual-channel (wired, wireless) multi-level audio signal transmission system provided in Example 2.

[0017] In the figure: 1-TV, 2-coaxial digital audio signal transmission line, 3-coaxial converter, 4-coaxial analog audio signal transmission line, 5-headphone power amplifier, 6-wired headphones, 7-Bluetooth signal transmitter, 8-Bluetooth headphones. DETAILED DESCRIPTION

[0018] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0020] Example 1

[0021] like Figure 1 As shown, Example 1 provides a two-way (wired, wireless) multi-level audio signal transmission system, including a coaxial converter 3 or a coaxial audio signal converter (the coaxial converter 3 is taken as an example for specific description below), multiple headphone power amplifiers 5, multiple wired headphones 6, and multiple Bluetooth signal transmitters 7.

[0022] The input end of the coaxial converter 3 is connected to the coaxial audio output jack of the television 1, and is used to convert the digital audio signal output by the television 1 into an analog audio signal that can be used by the wired headset 6 and the Bluetooth headset 8. Specifically, the input end of the coaxial converter 3 is an input jack, and the input jack of the coaxial converter 3 is connected to the coaxial audio output jack of the television 1 through the coaxial digital audio signal transmission line 2; wherein, both ends of the coaxial digital audio signal transmission line 2 are plugs. It should be pointed out that the connection form between the input end of the coaxial converter 3 and the coaxial audio output jack of the television 1 is not limited to the above-mentioned connection form, and other connection forms that can perform signal transmission are also types to be protected by this application.

[0023] The output end of the coaxial converter 3 is connected to the input end of the headphone power amplifier 5 through the coaxial analog audio signal transmission line 4. The output end of the coaxial converter 3 outputs an analog signal. After the analog signal enters the headphone power amplifier 5, it is amplified and then distributed for output (transmitted to the next-level headphone power amplifier 5, wired headphones 6, and Bluetooth signal transmitter 7). Specifically, the input end of the coaxial converter 3 is an output jack, and the input end of the headphone power amplifier 5 is an input jack. The output jack of the coaxial converter 3 is connected to the input jack of the headphone power amplifier 5 through the coaxial analog audio signal transmission line 4; wherein, plugs are provided at both ends of the coaxial analog audio signal transmission line 4. It should be pointed out that the connection form between the output end of the coaxial converter 3 and the input end of the headphone power amplifier 5 is not limited to the above-mentioned connection form, and other connection forms that can perform signal transmission are also types to be protected by this application.

[0024] The headphone power amplifier 5 has an input terminal and multiple output terminals. The multiple headphone power amplifiers 5 are connected in a tree topology. The two headphone power amplifiers 5 with a signal transmission relationship are in a superior-subordinate relationship. The output terminal of the headphone power amplifier 5 of the upper level is connected to the input terminal of the headphone power amplifier 5 of the lower level. Specifically, the input terminal of the headphone power amplifier 5 is an input jack, and the output terminal of the headphone power amplifier 5 is an output jack. The output jack of one headphone power amplifier 5 is connected to a plug at one end of the coaxial analog audio signal transmission line 4, and the plug at the other end of the coaxial analog audio signal transmission line 4 is connected to the input jack of another headphone power amplifier 5. In this way, a pair of headphone power amplifiers 5 with a superior-subordinate relationship are formed; an upper headphone power amplifier 5 can provide analog audio signals for multiple lower headphone power amplifiers 5. It should be pointed out that the information transmission connection form between the upper and lower headphone power amplifiers 5 is not limited to the above-mentioned connection form, and other connection forms that can perform signal transmission are also the types to be protected by this application.

[0025] Since not all of the multiple output ends of the headphone power amplifier 5 transmit analog audio signals to the next-stage headphone power amplifier 5, the remaining output ends can be connected to the input ends of the wired headphones and / or the input ends of the Bluetooth signal transmitter 7. One headphone power amplifier 5 is generally connected to multiple wired headphones 6 and one Bluetooth signal transmitter 7, and one Bluetooth signal transmitter 7 is connected to multiple Bluetooth headphones 8, wherein the Bluetooth headphones 8 are provided by the customer. Specifically, the input ends of the wired headphones 6 and the Bluetooth signal transmitter 7 are plugs, and the plugs are inserted into the output jacks of the headphone power amplifier 5 to complete the signal transmission connection. It should be pointed out that the information transmission connection form between the wired headphones 6 and the Bluetooth signal transmitter 7 and the headphone power amplifier 5 is not limited to the above-mentioned connection form, and other connection forms that can perform signal transmission are also the types to be protected by this application.

[0026] The dual-channel (wired, wireless) multi-level audio signal transmission system of this embodiment is used for a television set 1 without a headphone jack, because the coaxial audio output jack of this type of television set 1 outputs a digital audio signal, while the wired headphones 6 and Bluetooth headphones 8 use analog signals, so the signal matching problem needs to be solved first.

[0027] In this embodiment, the headphone power amplifier 5 has 4 or 10 output terminals, and the Bluetooth signal transmitter 7 can match 4 or 10 Bluetooth headphones 8. It should be noted that the N in the "one to N" of the headphone power amplifier 5 and the Bluetooth signal transmitter 7 is not limited to 4 and 10, but can also be other values.

[0028] The "dual-path" in this embodiment refers to a wired transmission system with a wired headset 6 as a terminal and a wireless transmission system with a Bluetooth headset 8 as a terminal, and the "multi-stage" refers to a tree-like topology transmission system formed by multiple headphone power amplifiers 5.

[0029] Example 2

[0030] like Figure 2 As shown, Embodiment 2 provides another dual-channel (wired, wireless) multi-level audio signal transmission system, and its structure is basically the same as that of Embodiment 1, except that: the headphone power amplifier 5 is connected to the headphone jack of the TV 1 through the coaxial analog audio signal transmission line 4. Specifically, one end of the coaxial analog audio signal transmission line 4 is plugged into the input jack of the headphone power amplifier 5, and the other end is plugged into the headphone jack of the TV 1.

[0031] Since some televisions 1 have a headphone jack, which outputs analog audio signals that can be used by headphones, there is no need to provide a coaxial converter 3.

[0032] The two-way (wired, wireless) multi-level audio signal transmission systems of embodiments 1 and 2 have the following common advantages:

[0033] It solves the problem of poor utilization of TVs in business premises of coffee, tea and catering enterprises, so that these business premises (referring to business premises with TVs) can allow customers with needs to listen to the sound synchronized with the video screen played on the TV while maintaining a quiet atmosphere and not affecting the normal consumption of other customers, and can fully understand the content of the video screen played on the TV, changing the current situation in such places where customers can only watch the TV screen but not hear the TV sound. Customers who watch TV without wearing wired headphones or turning on their own Bluetooth headphones will not hear the sound on the TV, which will not affect their normal consumption activities. Customers who have watched TV programs through wired headphones or their own Bluetooth headphones feel that they are worth it because they have gained extra benefits in addition to their normal consumption activities, which will become one of the reasons for them to patronize again next time. In this way, the purpose of setting up TVs in business premises of coffee, tea and catering enterprises to attract customers and boost business is achieved. Secondly, the utility model can also encourage businesses that install televisions in coffee, tea and catering business premises to further develop the functions of the televisions installed in coffee, tea and catering business premises within the scope permitted by national laws and regulations, and better play the functions of the televisions installed in the business premises of coffee, tea and catering enterprises.

[0034] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A dual-channel multi-level audio signal transmission system, characterized in that: It includes multiple headphone power amplifiers, multiple wired headphones, and multiple Bluetooth signal transmitters; the multiple headphone power amplifiers are connected in a tree topology structure, and two headphone power amplifiers with a signal transmission relationship are in a superior-subordinate relationship, the headphone power amplifier has an input end and multiple output ends, the wired headphones have an input end, and the Bluetooth signal transmitter has an input end, and the multiple output ends of the headphone power amplifier at the upper level are connected to the input ends of one or more headphone power amplifiers at the lower level, and / or the input ends of multiple wired headphones, and / or the input end of one Bluetooth signal transmitter.

2. The dual-channel multi-level audio signal transmission system according to claim 1, characterized in that: The headphone power amplifier is connected to the headphone jack of the television through a coaxial analog audio signal transmission line.

3. The dual-channel multi-level audio signal transmission system according to claim 2, characterized in that: The input end of the headphone power amplifier is an input jack, and the output end of the headphone power amplifier is an output jack. The input jack and the output jack of the headphone power amplifier are of the same form. Both ends of the coaxial analog audio signal transmission line, the input end of the wired headset, and the input end of the Bluetooth signal transmitter are plugs, and the plugs are compatible with the input jack and the output jack.

4. The dual-channel multi-level audio signal transmission system according to claim 1, characterized in that: The headphone power amplifier has 4 or 10 output terminals, and the Bluetooth signal transmitter can match 4 or 10 Bluetooth headphones.

5. The dual-channel multi-level audio signal transmission system according to any one of claims 1 to 4, characterized in that: The dual-channel multi-level audio signal transmission system also includes a coaxial converter or a coaxial audio signal converter, which is used to convert a digital audio signal into an analog audio signal. The coaxial converter or the coaxial audio signal converter has an input jack and an output jack. The input jack of the coaxial converter or the coaxial audio signal converter is connected to the coaxial audio output jack of the TV through a coaxial digital audio signal transmission line, wherein both ends of the coaxial digital audio signal transmission line are plugs, and the output jack of the coaxial converter or the coaxial audio signal converter is connected to the input jack of the headphone power amplifier through the coaxial analog audio signal transmission line.

Images