Audio signal transmission device, audio signal transmission method, audio signal receiving device, audio signal receiving method, and audio system

Abstract

To provide an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method, and an audio system, which have low overall system costs.SOLUTION: In an audio signal transmission device 100 including a low-noise buffer 101, an A / D converter 102, a serializer 103, and an optical interface transmission device 104, the low-noise buffer 101 receives an audio signal and generates a low-noise buffer signal, the A / D converter 102 converts the low-noise buffer signal into a digital signal, the serializer 103 serializes the digital signal to output at least one serialized digital signal, and the optical interface transmission device 104 converts the at least one serialized digital signal into at least one optical signal.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method, and an audio system, and in particular, the present invention relates to an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method, and an audio system that have low overall system costs. [Background technology]

[0002] Conventional audio signal transmission systems transmit signals over metal wires. Summary of the Invention [Problem to be solved by the invention]

[0003] However, in order to reduce the loss of signals as they pass through the metal wires, more expensive metal wires must be used, which can increase the overall cost of the system. [Means for solving the problem]

[0004] In view of the above problems, the present invention has the following configuration. In an audio signal transmission device equipped with a low noise buffer, an A / D converter, a serializer, and an optical interface transmission device, the low-noise buffer is configured to receive an audio signal and generate a low-noise buffer signal; the A / D converter is configured to convert the low noise buffered signal into a digital signal; the serializer is configured to serialize the digital signal to output at least one serialized digital signal; The optical interface transmission device is configured to convert at least one serialized digital signal into at least one optical signal. 1. An audio signal transmission device comprising:

[0005] Also, the optical interface transmission device includes at least one small package plug-in optical module, and each of the small package plug-in optical modules outputs one of at least one optical signal. 2. The audio signal transmission device according to claim 1 .

[0006] The optical interface transmission device also includes at least one small package plug-in optical module and at least one spectrometer device; Each of the at least one spectrometer device receives an output of at least one small package plug-in optical module and splits the output into a plurality of spectrometer output signals; All of the spectrometer output signals of the at least one spectrometer device constitute the at least one optical signal. 2. The audio signal transmission device according to claim 1 .

[0007] The audio signal includes a plurality of sub-audio signals, The low noise buffer includes a plurality of sub low noise buffers; Each of the sub low-noise buffers receives one of the plurality of sub audio signals and generates a plurality of sub low-noise buffer signals of the low-noise buffer signal. 2. The audio signal transmission device according to claim 1 .

[0008] The plurality of sub-audio signals include a plurality of multi-channel signals. 5. The audio signal transmission device according to claim 4.

[0009] The A / D converter includes a multi-channel A / D converter. 2. The audio signal transmission device according to claim 1 .

[0010] Also includes an optical interface receiver and a deserializer; the optical interface receiver is configured to receive and convert one of the at least one optical signal and output a communication signal; The deserializer is configured to deserialize the communication signal and output a deserialized signal. 7. An audio signal receiving device adapted to an audio signal transmitting device according to any one of claims 1 to 6.

[0011] The audio signal receiving device includes a digital speaker amplifier device, The digital speaker amplifier device is configured to convert the deserialized signal into a power output signal. 8. The audio signal receiving device according to claim 7.

[0012] Also, a low-noise buffer receives the audio signal and generates a low-noise buffer signal; converting the low noise buffer signal into a digital signal by an A / D converter; serializing the digital signal with a serializer to output at least one serialized digital signal; converting said at least one serialized digital signal into at least one optical signal by an optical interface transmission device; 13. An audio signal transmission method comprising:

[0013] Also, the optical interface transmission device includes at least one small package plug-in optical module; The audio signal transmission method includes outputting one of the at least one optical signal from each of the small package plug-in optical modules. 10. The audio signal transmission method according to claim 9.

[0014] The optical interface transmission device includes at least one small package plug-in optical module and at least one spectrometer device; Each of the at least one spectrometer device receives an output of the at least one small package plug-in optical module, and the audio signal transmission method includes: Each of the at least one spectrometer device receives an output of the at least one small package plug-in optical module and splits the output into a plurality of spectrometer output signals, the plurality of spectrometer output signals of all of the at least one spectrometer device constituting the at least one optical signal. 10. The audio signal transmission method according to claim 9.

[0015] In addition, the audio signal includes a plurality of sub audio signals, the low noise buffer includes a plurality of sub low noise buffers, and the audio signal transmission method includes: Each of the sub low-noise buffers receives one of the plurality of sub audio signals to generate a plurality of sub low-noise buffer signals of the low-noise buffer signal. 10. The audio signal transmission method according to claim 9.

[0016] The sub-audio signal includes a plurality of multi-channel signals. 13. The audio signal transmission method according to claim 12.

[0017] Also, the A / D converter includes a plurality of multi-channel A / D converters. 10. The audio signal transmission method according to claim 9.

[0018] and receiving and converting one of the at least one optical signals by an optical interface receiving device to output a communication signal; A deserializer deserializes the communication signal and outputs a deserialized signal. A method for receiving an audio signal adapted to a method for transmitting an audio signal according to any one of claims 9 to 14.

[0019] The voice signal receiving method further comprises: converting the deserialized signal to a power output signal by a digital speaker amplifier device. 16. Method for receiving an audio signal according to claim 15.

[0020] Also, in an audio system including an audio signal transmitting device, at least one optical fiber device, and at least one audio signal receiving device, The audio signal transmission device includes a low-noise buffer configured to receive an audio signal and generate a low-noise buffer signal; The audio signal transmission device further includes an A / D converter, a serializer, and an optical interface transmission device; the A / D converter is configured to convert the low noise buffered signal into a digital signal; the serializer is configured to serialize the digital signal and output at least one serialized digital signal; the optical interface transmission device converts the at least one serialized digital signal into at least one optical signal and transmits the at least one optical signal to the at least one optical fiber device; Each of the at least one audio signal receiving device includes an optical interface receiving device and a deserializer; the optical interface receiver is configured to receive one of the at least one optical signal from the at least one optical fiber device and output a communication signal; The deserializer is configured to deserialize the communication signal and output a deserialized signal. An audio system characterized by:

[0021] Also, the audio signal includes a plurality of multi-channel signals, the low noise buffer includes a plurality of sub-low noise buffers, each of the sub-low noise buffers receiving one of the plurality of multi-channel signals to generate a plurality of sub-low noise buffer signals of the low noise buffer signal; Each of the serialized digital signals corresponds to one of the plurality of multi-channel signals. 18. The acoustic system of claim 17.

[0022] Also, the optical interface transmission device includes at least one small package plug-in optical module, each of the small package plug-in optical modules outputting one of the at least one optical signals. 18. The acoustic system of claim 17.

[0023] Also, the optical interface transmission device includes at least one small package plug-in optical module and at least one spectrometer device; each of the at least one spectrometer device receives an output of the at least one small package plug-in optical module and splits the output into a plurality of spectrometer output signals; All of the spectrometer output signals of the at least one spectrometer device constitute the at least one optical signal. 18. The acoustic system of claim 17.

[0024] Each of the at least one audio signal receiving devices includes a digital speaker amplifier device, the digital speaker amplifier device configured to convert the deserialized signal into a power output signal. 18. The acoustic system of claim 17.

[0025] Also, the sound system includes at least one speaker device, and each of the at least one speaker device receives one of the power output signals of the at least one audio signal receiving device and broadcasts a corresponding audio. 22. The audio system of claim 21.

[0026] The sound system further includes an array wrapper device for receiving the power output signal of each of the at least one audio signal receiving devices and broadcasting a corresponding audio. 22. The audio system of claim 21. Effect of the Invention

[0027] Based on the above, embodiments of the present invention provide an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method, and an audio system, which can reduce signal loss and extend the transmission distance by using a low-noise buffer, an A / D converter, a serializer, an optical interface transmission device, an optical interface receiving device, a deserializer, and an optical fiber device for transmitting optical signals. [Brief description of the drawings]

[0028] [Figure 1] 1 is a block diagram of a system of an audio signal transmission device according to an embodiment of the present invention. [Diagram 2] 1 is a block diagram of a system of an audio signal transmission device according to an embodiment of the present invention. [Figure 3A] 1 is a block diagram of a system of an audio signal transmission device according to an embodiment of the present invention. [Figure 3B] 1 is a block diagram of a system of an audio signal transmission device according to an embodiment of the present invention. [Figure 4] 1 is a block diagram of a system of an audio signal receiving device according to an embodiment of the present invention. [Diagram 5] 1 is a block diagram of a system of an audio signal receiving device according to an embodiment of the present invention. [Figure 6] FIG. 1 is a block diagram of an audio system according to an embodiment of the present invention. [Figure 7] 1 is a schematic configuration diagram of an audio system according to an embodiment of the present invention. [Figure 8] FIG. 1 is a block diagram of an audio system according to an embodiment of the present invention. [Figure 9]1 is a schematic diagram of an audio system according to an embodiment of the present invention; [Figure 10A] FIG. 1 is a schematic diagram of an application of an audio system according to an embodiment of the present invention. [Figure 10B] FIG. 1 is a schematic diagram of an application of an audio system according to an embodiment of the present invention. [Figure 11] FIG. 1 is a schematic diagram of an application of an audio system according to an embodiment of the present invention. [Figure 12] 2 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. [Figure 13] 2 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. [Figure 14] 2 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. [Figure 15] 2 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. [Figure 16] 2 is a flowchart of a method for receiving an audio signal according to an embodiment of the present invention. [Figure 17] 2 is a flowchart of a method for receiving an audio signal according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The above-mentioned technical contents, features, and effects of the present invention will be clearly clarified by the detailed description of the embodiments below with reference to the drawings. In addition, the thickness and dimensions of each component in the drawings may be exaggerated, omitted, or approximately expressed for the ease of understanding of those skilled in the art. Furthermore, the dimensions of each component do not necessarily match the actual dimensions and may differ from those used for the actual dimensions, but these are not intended to limit the scope of the present invention to those described in the examples. Therefore, without the intention of limiting the technical contents, even if the structure, proportionality, and dimensions are changed in the embodiments of the present invention, as long as they do not affect the effects and purposes of the present invention, they are included in the scope of the technical contents described in the present invention. In addition, the same symbols are used throughout the drawings to refer to the same components, and in the case of related components, similar numbers, for example, numbers that differ only in the last digit, are used. In the term "connect" mentioned in the following embodiments, in addition to the case of direct connection, it also includes the case of indirect connection unless otherwise specified.

[0030] An embodiment of the present invention will be described with reference to Figures 1 and 2. Figures 1 and 2 are block diagrams of a system of an audio signal transmission device according to an embodiment of the present invention.

[0031] First, referring to FIG. 1, an audio signal transmission device 100 is used for receiving an audio signal and outputting at least one corresponding optical signal.

[0032] The audio signal transmission device 100 includes a low noise buffer 101 , an A / D converter 102 , a serializer 103 , and an optical interface transmission device 104 . The audio signal may include multiple sub-audio signals, which may include multiple multi-channel signals (eg, a left channel signal and a right channel signal).

[0033] The low-noise buffer 101 is configured to reduce noise in the audio signal to generate a low-noise buffered signal. Reducing the noise in the audio signal can improve the accuracy of the operation of the A / D converter 102.

[0034] In the embodiment of the present invention, the low-noise buffer 101 includes a 2nd order low-pass filter to reduce noise in the audio signal.

[0035] 2, in the embodiment shown in FIG 2, the audio signal includes a left channel signal and a right channel signal. The low noise buffer 101 includes a sub low noise buffer 1011 and a sub low noise buffer 1012.

[0036] The sub low-noise buffer 1011 is configured to reduce noise of the right channel signal and generate a right channel low-noise buffer signal.

[0037] The sub low-noise buffer 1012 is configured to reduce noise in the left channel signal and generate a left channel low-noise buffered signal.

[0038] Therefore, in this embodiment, the low-noise buffer signal generated by the low-noise buffer 101 includes a right-channel low-noise buffer signal and a left-channel low-noise buffer signal.

[0039] Here, both the sub low-noise buffer 1011 and the sub low-noise buffer 1012 include a second-order low-pass filter for reducing noise in the audio signal.

[0040] Referring to Figure 1, the A / D converter 102 is configured to convert the low noise buffered signal output by the low noise buffer 101 into a digital signal.

[0041] In an embodiment of the present invention, A / D converter 102 includes an "N"-bit A / D converter with a sampling rate of "M" Hz to convert the low noise buffered signal into an "N"-bit digital signal, where "M" is a positive real number and "N" is a positive integer.

[0042] The A / D converter 102 is an inter-IC sound (ICS) for processing the converted digital signal. 2 S) interface control chip. It should be noted that in the above embodiment, the control chip of the inter-chip audio interface is used to process the converted digital signal.

[0043] Of course, a time-division multiplexing (TDM) interface control chip or a pulse-code modulation (PCM) interface control chip can also be used if necessary, but the present invention is not limited to these.

[0044] Referring again to Figure 2, in the embodiment shown in Figure 2, A / D converter 102 includes an "N" bit A / D converter with a sampling rate of "M" Hz.

[0045] The 'N' bit A / D converter converts the right channel low noise buffer signal and the left channel low noise buffer signal.

[0046] The A / D converter 102 processes the converted digital signal through the control chip of the inter-chip audio interface, and integrates the converted left channel digital signal and right channel digital signal (for example, converts the converted left channel digital signal and right channel digital signal into I 2 S format) and send it to the serializer 103.

[0047] In addition, as shown in the embodiment of FIG. 2, the A / D converter 102 may include two “N”-bit A / D converters with a sampling rate of “M” Hz to respectively convert the aforementioned right channel low noise buffer signal and left channel low noise buffer signal.

[0048] The A / D converter 102 processes the digital signal converted via the control chip of the inter-chip audio interface, integrates the converted left channel digital signal and right channel digital signal, and transmits them to the serializer 103 .

[0049] In this embodiment, the aforementioned "M" is selected as 192k and "N" is selected as 24, while in other embodiments, the aforementioned "M" is selected as 384k and "N" is selected as 32.

[0050] In this embodiment, the above-mentioned "M" is selected as 768k, and "N" is selected as 32. It should be noted that the values ​​of M and N can be selected according to actual needs, and are not limited to the values ​​exemplified in the above embodiment.

[0051] In an embodiment of the present invention, A / D converter 102 includes a multi-channel A / D converter.

[0052] Referring again to Fig. 1, the serializer 103 is configured to serialize the received digital signal and output at least one serialized digital signal. The serializer 103 may include at least one serializer element (not shown) that outputs the at least one serialized digital signal.

[0053] In addition, serializer elements mainly use differential signal transmission technology, which has low power consumption, strong interference resistance and high speed. In theory, the maximum transmission speed of the serial interface can reach 10Gbps or more.

[0054] An embodiment of the present invention will be described with reference to Fig. 2. The serializer 103 includes a serializer element (not shown).

[0055] The above-mentioned serializer element outputs the integrated and converted left and right channel digital signals (for example, the integrated and converted left and right channel digital signals are I 2 S format) into a serialized integrated digital signal, and the serializer 103 outputs the serialized integrated digital signal to the optical interface transmission device 104. Referring again to Figure 2, in an embodiment of the present invention, the serializer 103 includes a serializer element.

[0056] The serializer 103 first divides the received digital signal into a left channel digital signal and a right channel digital signal, and the serializer element serializes the left channel digital signal and the right channel digital signal, respectively.

[0057] In an embodiment of the present invention, serializer 103 includes a left channel serializer element and a right channel serializer element for serializing a left channel digital signal and a right channel digital signal, respectively.

[0058] In the above embodiment, the serialized left channel digital signal and the serialized right channel digital signal are at least one serialized digital signal output by the serializer 103 .

[0059] 1 and 2 simultaneously, the optical interface transmission device 104 is configured to convert at least one serialized digital signal into at least one optical signal.

[0060] In this embodiment, as shown in FIG. 2, the optical interface transmission device 104 includes a small form factor pluggable optical module (SPF optical module) 1041 and a small form factor pluggable optical module 1042. Here, the small package plug-in optical module 1041 and the small package plug-in optical module 1042 are small optical transceivers used in so-called "hot swap" when optical communication is used for electrical communication or data communication.

[0061] Common small package plug-in optical modules are available with various types of transmitting and receiving functions, so users can choose the appropriate small package plug-in optical module for data transmission over the available fiber types (e.g. multimode fiber, single mode fiber, etc.).

[0062] Although two small package plug-in optical modules 1041 and 1042 are shown in FIG. 2, the optical interface transmission device 104 may include one or more than two small package plug-in optical modules 1041 and 1042.

[0063] It should be noted that the number of small package plug-in optical modules depends on the number of channels required for transmitting information, but is not limited to the number described in the embodiment of the present invention.

[0064] In the embodiment of the present invention, the small package plug-in optical module 1041 and the small package plug-in optical module 1042 simultaneously convert the serialized aggregate digital signal into two optical signals.

[0065] In an embodiment of the present invention, the small package plug-in optical module 1041 and the small package plug-in optical module 1042 convert the serialized left channel digital signal and the serialized right channel digital signal into an optical signal corresponding to the left channel and an optical signal corresponding to the right channel, respectively.

[0066] An embodiment of the present invention will be described with reference to Fig. 3A, which is a block diagram of a system of an audio signal transmission device according to an embodiment of the present invention.

[0067] Description will be made with reference to Figures 1, 2, and 3A at the same time. Comparing Figure 3A with Figure 2, Figure 3A includes a small package plug-in optical module 1041 and further includes a spectrometer (Optical Splitter) device 1043. The spectrometer device 1043 splits the output of the small package plug-in optical module 1041 and the small package plug-in optical module 1042 into multiple spectrometer output signals.

[0068] In this embodiment of the present invention, the serializer 103 outputs the aforementioned serialized integrated digital signal to the optical interface transmission device 104 .

[0069] After the small package plug-in optical module 1041 converts the aforementioned serialized integrated digital signal into an optical signal, the spectrometer device 1043 splits the output of the small package plug-in optical module 1041 into multiple spectrometer output signals.

[0070] At this time, each spectrometer output signal contains the information of the serialized integrated digital signal described above.

[0071] After receiving the aforementioned plurality of spectrometer output signals, different audio signal transmission devices extract left channel digital signals and right channel digital signals as required according to the received spectrometer output signals.

[0072] Reference will now be made to Fig. 3B, which is a block diagram of a system of an audio signal transmission device according to an embodiment of the present invention.

[0073] Referring to Figures 1, 2, and 3B simultaneously, Figure 3B differs from Figure 2 in that Figure 3B further includes an optical splitter device 1043 and a spectrometer device 1044, which split the outputs of the small package plug-in optical module 1041 and the small package plug-in optical module 1042 into multiple spectrometer output signals.

[0074] In addition, the above-mentioned optical splitter device 1043 and the spectrometer device 1044 can be selected as a fused biconical taper spectrometer or a planar waveguide type spectrometer as necessary, but the present invention is not limited to these.

[0075] Also, in the above-described embodiments of Figures 2 and 3A and 3B, the audio signal includes a left channel signal and a right channel signal, and the audio signal can be a multi-channel signal including more channels as required, or an audio signal including only a mono signal, but the present invention is not limited thereto.

[0076] Hereinafter, the audio signal transmission method of the present invention and how the modules of the audio signal transmission device 100 work in cooperation with each other will be described in detail with reference to the drawings.

[0077] The following description will be made with reference to Fig. 12. Here, Fig. 12 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. The following description will be made with reference to Fig. 1 and Fig. 12 at the same time. In the flowchart shown in Fig. 12, the audio signal transmission method includes steps S1201 to S1204.

[0078] In step S1201, an audio signal is received by the low-noise buffer 101, and a low-noise buffer signal is generated. In step S1202, the low noise buffer signal is converted into a digital signal by the A / D converter 102.

[0079] In step S1203, the serializer 103 serializes the digital signal and outputs at least one serialized digital signal, and in step S1204, the optical interface transmission device 104 converts the at least one serialized digital signal into at least one optical signal.

[0080] The following description will be made with reference to Fig. 13. Here, Fig. 13 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. Referring to Figs. 1, 2 and 13 at the same time, in the embodiment of the present invention, the optical interface transmission device 104 includes at least a small package plug-in optical module (for example, the small package plug-in optical modules 1041 and 1042 shown in Fig. 2), and the above step S1204 includes step S1301. In step S1301, each small package plug-in optical module outputs one of the at least one optical signal.

[0081] Description will be given with reference to Fig. 14. Here, Fig. 14 is a flowchart of an audio signal transmission method according to an embodiment of the present invention. Referring to Fig. 1, Fig. 3B and Fig. 14 simultaneously, in an embodiment of the present invention, the optical interface transmission device 104 includes at least one small package plug-in optical module (small package plug-in optical modules 1041 and 1042 shown in Fig. 3B) and at least one spectrometer device (spectrometer devices 1043 and 1044 shown in Fig. 3B).

[0082] Each spectrometer device receives the output of one of the aforementioned at least one small package plug-in optical module, and the aforementioned step S1204 includes step S1401.

[0083] In step S1401, each spectrometer device receives the output of at least one of the small package plug-in optical modules and splits the output into multiple spectrometer output signals. All of the plurality of spectrometer output signals of the at least one spectrometer constitute the at least one optical signal.

[0084] Additionally, using a spectrometer device to split an optical signal into multiple spectrometer output signals for transmission consumes less energy than generating and transmitting multiple electrical signals, thereby reducing the energy consumption required for the overall operation of the system.

[0085] Description will be made with simultaneous reference to Figures 1, 2, 3A, 3B, and 15. Here, Figure 15 is a flowchart of a method for transmitting an audio signal according to an embodiment of the present invention. In an embodiment of the present invention, the audio signal includes a number of sub-audio signals (such as the left channel signal and the right channel signal shown in Figures 2, 3A and 3B).

[0086] The low-noise buffer 101 includes a plurality of sub-low-noise buffers (for example, the sub-low-noise buffer 1011 and the sub-low-noise buffer 1012 shown in FIGS. 2 and 3), and the above-mentioned step S1201 includes step S1501.

[0087] In step S1501, each sub low-noise buffer (e.g., sub low-noise buffer 1011 and sub low-noise buffer 1012 shown in Figures 2, 3A, and 3B) receives one of the multiple sub audio signals (the left channel signal and the right channel signal shown in Figures 2, 3A, and 3B) and generates multiple sub low-noise buffer signals of the low-noise buffer signal.

[0088] Next, a description will be given with reference to Fig. 4. Here, Fig. 4 is a block diagram of a system of an audio signal receiving device according to an embodiment of the present invention. Referring to Fig. 4, an audio signal receiving device 400 is configured to receive one of at least one optical signal output from the audio signal transmitting device 100 shown in Fig. 1 etc., and generate a corresponding deserialized digital signal.

[0089] The audio signal receiving device 400 includes an optical interface receiving device 401 and a de-serializer 402 .

[0090] The optical interface receiver 401 is configured to receive and convert one of the at least one received optical signal to output an electrical signal.

[0091] In an embodiment of the present invention, corresponding to the embodiments shown in Figures 2, 3A, and 3B, the optical interface receiving device 401 includes a small package plug-in optical module that receives and converts at least one of the received optical signals and outputs an electrical signal.

[0092] The electrical signal corresponds to one of the at least one serialized digital signal output by the serializer 103 .

[0093] The deserializer 402 is arranged to correspond to the serializer 103 in FIG. 1, and can deserialize a signal serialized by the serializer 103.

[0094] The deserializer 402 is configured to deserialize the electrical signal output by the optical interface receiver 401 and output a deserialized digital signal.

[0095] 2 and 4, based on an embodiment in which the serializer element serializes the combined converted left channel and right channel digital signals into a serialized combined digital signal, the following is true.

[0096] That is, based on the embodiment, in this embodiment, regardless of whether the audio signal receiving device 400 receives an optical signal output by the small package plug-in optical module 1041 in Figure 2 or receives an optical signal output by the small package plug-in optical module 1042 in Figure 2, the electrical signal output by the small package plug-in optical module of the optical interface receiving device 401 corresponds to a serialized integrated digital signal.

[0097] The deserializer 402 deserializes the electrical signal output by the optical interface receiving device 401 to obtain a deserialized digital signal corresponding to the digital signal that has undergone the unified conversion of the left channel and right channel digital signals.

[0098] 2 and 4 simultaneously, the embodiment of serializing the left channel digital signal and the right channel digital signal, respectively, by the serializer element described above continues.

[0099] When the audio signal receiving device 400 receives the optical signal output by the small package plug-in optical module 1041 in FIG. 2, the electrical signal output by the small package plug-in optical module of the optical interface receiving device 401 corresponds to the serialized digital signal of the right channel.

[0100] Also, the deserialized digital signal output by the deserializer 402 corresponds to the right channel digital signal.

[0101] 3A and 4 are referred to at the same time. Taking the embodiment shown in Fig. 3A as an example, when the audio signal receiving device 400 receives the optical signal output by the spectrometer device 1043 in Fig. 3A, the electrical signal output by the small package plug-in optical module of the optical interface receiving device 401 corresponds to a serialized integrated digital signal.

[0102] Fig. 16 is a flowchart of a voice signal receiving method according to an embodiment of the present invention. With reference to Fig. 4 and Fig. 16 at the same time, the voice signal receiving method shown in Fig. 16 may be combined with the voice signal transmitting method shown in Fig. 12 to Fig. 15.

[0103] In the embodiment shown in Fig. 16, the audio signal receiving method includes steps S1601 to S1602. In step S1601, the optical interface receiving device 401 receives and converts one of at least one optical signal, and outputs an electrical signal.

[0104] In step S1602, the deserializer 402 deserializes the electrical signal and outputs a deserialized digital signal.

[0105] 5 is a system block diagram of an audio signal receiving device according to an embodiment of the present invention. Compared with the audio signal receiving device 400 shown in FIG. 4, the audio signal receiving device 500 further includes a digital speaker amplifier device 501.

[0106] The digital speaker amplifier device 501 is configured to convert the deserialized digital signal into a Power Output signal, and the "+" and "-" symbols shown in FIG. 5 indicate the positive and negative polarities of the Power Output signal.

[0107] The step of converting the deserialized digital signal into a power output signal includes (1) selecting a portion of the deserialized digital signal to output, and (2) amplifying the portion of the deserialized digital signal to output such that the power output signal is at a level sufficient to drive a speaker or headphones.

[0108] In an embodiment of the present invention, the digital speaker amplifier device 501 includes a digital speaker amplifier circuit (not shown) that amplifies the deserialized digital signal.

[0109] Take the above embodiment, in which the serializer element serializes the converted digital signals of the left channel and the right channel into a serialized integrated digital signal, as an example:

[0110] When the digital speaker amplifier device 501 outputs a right channel signal, the digital speaker amplifier device 501 extracts the right channel digital signal from the deserialized digital signal (corresponding to the left channel and right channel digital signals that have undergone the integrated conversion described above) and amplifies it to a power output signal.

[0111] Taking the above-described embodiment as an example in which the above-mentioned serializer element serializes the left channel digital signal and the right channel digital signal separately, when the digital speaker amplifier device 501 outputs a right channel signal, the audio signal receiving device 400 is configured to receive an optical signal corresponding to the right channel.

[0112] At this time, the digital speaker amplifier device 501 amplifies all the deserialized digital signals (that is, selects all the deserialized digital signals as the output targets) to generate a power output signal.

[0113] Here, Fig. 17 is a flowchart of an audio signal receiving method according to an embodiment of the present invention. Description will be made with reference to Fig. 5, Fig. 16 and Fig. 17 at the same time. In the embodiment shown in Fig. 17, after the above step S1602, step S1701 is further executed, in which the digital speaker amplifier device 501 converts the deserialized digital signal into a power output signal.

[0114] In this embodiment, the digital speaker amplifier device 501 directly converts the deserialized digital signal into a power output signal and uses it to directly drive a speaker or earphone, so that the number of contacts can be reduced and signal loss can be reduced compared to the case where the deserialized digital signal is converted into an analog signal to drive a speaker or earphone. Description will be given with reference to Fig. 6. Fig. 6 is a block diagram of an audio system according to an embodiment of the present invention. Fig. 7 is a schematic configuration diagram of an audio system according to an embodiment of the present invention.

[0115] First, referring to FIG. 6, an audio system 600 includes an audio signal transmitting device 601 , an optical fiber device 6021 , an optical fiber device 6022 , an audio signal receiving device 603 , and an audio signal receiving device 604 .

[0116] Here, the audio signal transmission device 601 can employ the audio signal transmission device described in the above embodiment (for example, the audio signal transmission device 100 shown in FIGS. 1 to 3A and 3B). The voice signal receiving device 400 described in the embodiment of Fig. 4 is applied to the voice signal receiving device 603 and the voice signal receiving device 604. The optical fiber device 6021 and the optical fiber device 6022 can use a single mode optical fiber or a multimode optical fiber, but the present invention is not limited thereto.

[0117] 6 and 7 will be referred to simultaneously. In the embodiment shown in Fig. 7, a signal generated by a sound source 701 is converted into an audio signal that is input to an audio signal transmission device 601 via a preamplifier 702.

[0118] The audio signal includes a left channel signal and a right channel signal, and is transmitted to the audio signal transmission device 601 via a transmission path 703 .

[0119] The left channel signal and the right channel signal are converted through the audio signal transmission device 601 into two optical signals corresponding to a serialized aggregate digital signal. The above two optical signals are respectively transmitted to an audio signal receiving device 603 and an audio signal receiving device 604. The audio signal receiving device 603 and the audio signal receiving device 604 each output a deserialized digital signal.

[0120] The deserialized digital signal is transmitted via transmission lines 704, 705 to digital speaker amplifier devices 706, 707, which convert the deserialized digital signal into a power output signal.

[0121] The power output signals of the digital speaker amplifier devices 706 and 707 respectively drive a right speaker device 708 and a left speaker device 709. Here, the transmission lines 703, 704, and 705 may be RCA cables.

[0122] Figure 8 is a block diagram of an audio system according to an embodiment of the present invention.Figure 9 is a schematic diagram of an audio system according to an embodiment of the present invention.

[0123] First, referring to FIG. 8, in comparison with the embodiment shown in FIG. 7, audio signal receiving device 801 and audio signal receiving device 802 in audio system 800 in FIG. 8 adopt audio signal receiving device 500 described in the embodiment of FIG. 5 above.

[0124] That is, each of the audio signal receiving devices 801 and 802 includes a digital speaker amplifier device 501 therein.

[0125] 8 and 9, in the embodiment shown in Fig. 9, compared with the embodiment shown in Fig. 7, a signal generated by a sound source 701 is converted into an audio signal input to the audio signal transmission device 601 via a preamplifier 901. Here, the preamplifier 901 includes an audio source switcher (not shown).

[0126] The left channel signal and the right channel signal are converted into two optical signals corresponding to a serialized integrated digital signal via the audio signal transmission device 601, and the above-mentioned two optical signals are transmitted to the audio signal receiving device 801 and the audio signal receiving device 802, respectively.

[0127] The digital speaker amplifier device 501 of the audio signal receiving device 801 and the digital speaker amplifier device 501 of the audio signal receiving device 802 each output a power output signal.

[0128] The power output signals of the digital speaker amplifier devices 706 and 707 drive a right speaker device 708 and a left speaker device 709 via transmission lines 803 and 804, respectively. Here, the transmission lines 803 and 804 may be speaker cables.

[0129] It should be noted that in the above embodiment, the left channel signal and the right channel signal are converted into two optical signals corresponding to the serialized aggregate digital signal via the audio signal transmission device 601 . Furthermore, the acoustic systems 600 and 800 can also be configured such that the left channel signal and the right channel signal are generated, via the audio signal transmission device 601, as optical signals corresponding to the left channel and optical signals corresponding to the right channel, respectively.

[0130] The optical signal corresponding to the left channel is transmitted to the audio signal receiving device 603 via the optical fiber device 6021 , and the optical signal corresponding to the right channel is transmitted to the audio signal receiving device 604 via the optical fiber device 6022 .

[0131] FIG. 10A is a schematic diagram of an application of an audio system according to an embodiment of the present invention.

[0132] 3A and 10A simultaneously, in the embodiment shown in Fig. 10A, the audio signal includes a left channel signal and a right channel signal.

[0133] The left channel signal and the right channel signal are converted into four optical signals corresponding to a serialized aggregate digital signal via the audio signal transmission device 100 .

[0134] Here, the audio signal receiving devices 10021, 10022, 10031, and 10032 employ the audio signal receiving device 500 described in the embodiment of FIG.

[0135] Two optical signals are transmitted to audio signal receiving devices 10021 and 10022 which drive the right speaker device 1004, and two optical signals are transmitted to audio signal receiving devices 10031 and 10032 which drive the left speaker device 1005.

[0136] The right speaker device 1004 and the left speaker device 1005 each have a treble terminal and a bass terminal.

[0137] The power output signal of the audio signal receiving device 10021 is connected to the treble terminal of the right speaker device 1004 , and the power output signal of the audio signal receiving device 10022 is connected to the bass terminal of the right speaker device 1004 .

[0138] The power output signal of the audio signal receiving device 10031 is connected to the treble terminal of the left speaker device 1005 , and the power output signal of the audio signal receiving device 10032 is connected to the bass terminal of the left speaker device 1005 .

[0139] The "+" and "-" symbols shown in FIG. 10A indicate the positive and negative polarities of the power output signal. In the above embodiment, the optical interface transmission device 104 is used to first convert the electrical signal into an optical signal.

[0140] Therefore, the spectrometer device 1043 can split the signal to the multiple audio signal receiving devices 10021, 10022, 10031, and 10032 under the condition of low energy consumption. In addition, since the optical signal is transmitted by the optical fiber device, the signal loss is reduced and the transmission distance can be increased.

[0141] FIG. 10B is a schematic diagram of an application of an audio system according to an embodiment of the present invention.

[0142] 3B and 10B simultaneously, in the embodiment shown in Fig. 10B, two optical signals corresponding to the left audio channel and two optical signals corresponding to the right audio channel (generated by spectrometer device 10012 and spectrometer device 10011, respectively) are generated.

[0143] The two optical signals corresponding to the left channel are transmitted to audio signal receiving devices 10031 and 10032 which drive the left speaker device 1005, and the optical signals corresponding to the right channel are transmitted to audio signal receiving devices 10021 and 10022 which drive the right speaker device 1004.

[0144] Fig. 11 is a schematic diagram of an application of an audio system according to an embodiment of the present invention. The description will be given with reference to Fig. 10A and Fig. 11 at the same time.

[0145] Compared to the embodiment shown in FIG. 10A, the left channel signal and the right channel signal are converted into multiple optical signals (generated by a spectrometer device 11011) corresponding to a serialized integrated digital signal via the audio signal transmission device 100.

[0146] A portion of the plurality of optical signals is transmitted to audio signal receiving devices 11021-1102N that drive a right array wrapper device 1104, and another portion of the plurality of optical signals is transmitted to audio signal receiving devices 11031-1103N that drive a left array wrapper device 1105, where N is a positive integer.

[0147] Based on the above, according to an embodiment of the present invention, an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method, and an audio system are provided, and by using a low-noise buffer, an A / D converter, a serializer, an optical interface transmission device, an optical interface receiving device, and a deserializer, an optical signal is transmitted through an optical fiber device, thereby reducing signal loss and extending the transmission distance.

[0148] The technical contents of the present invention have been described above together with the preferred embodiments, but these are not intended to limit the present invention and can be understood by those skilled in the art. Furthermore, any changes or modifications made to the present invention are included in the technical scope of the present invention as long as they do not deviate from the spirit of the present invention. Furthermore, the scope of protection of the present invention is defined by the claims. [Explanation of symbols]

[0149] 100, 601 Audio signal transmission device 101 Low Noise Buffer 102 A / D converter 103 Serializer 104 Optical interface transmission device 1011, 1012 Sub low noise buffer 1041, 1042 Small package plug-in optical module 1043, 1044, 10011, 10012, 11011 Spectrometer equipment 400, 500, 603, 604, 801, 802, 10021, 10022, 10031, 10032, 11021-1102N, 11031-1103N Audio signal receiving device N positive integer 401 Optical interface receiver 402 Deserializer 501, 706, 707 Digital speaker amplifier equipment + positive electrode - Negative electrode 600, 800 Sound Systems 6021, 6022 Optical fiber device 701 Sound Source 702, 901 Preamplifiers 703, 704, 705, 803, 804 transmission lines 708, 1004 Right speaker device 709, 1005 Left speaker device 1104 Right Array Trumpet Device 1105 Left array trumpet device S1201~S1204, S1301, S1401, S1501, S1601~S1602, S1701 steps

Claims

1. An audio signal transmission device including a low noise buffer, an A / D converter, a serializer, and an optical interface transmission device, the low-noise buffer is configured to receive an audio signal and generate a low-noise buffer signal; the A / D converter is configured to convert the low noise buffered signal into a digital signal; the serializer is configured to serialize the digital signal to output at least one serialized digital signal; The optical interface transmission device is configured to convert at least one serialized digital signal into at least one optical signal.

1. An audio signal transmission device comprising:

2. The optical interface transmission device includes at least one small package plug-in optical module, and each of the small package plug-in optical modules outputs one of at least one optical signal.

2. The audio signal transmission device according to claim 1.

3. The optical interface transmission device includes at least one small package plug-in optical module and at least one spectrometer device; Each of the at least one spectrometer device receives an output of at least one small package plug-in optical module and splits the output into a plurality of spectrometer output signals; All of the spectrometer output signals of the at least one spectrometer device constitute the at least one optical signal.

2. The audio signal transmission device according to claim 1.

4. the audio signal includes a plurality of sub-audio signals; The low noise buffer includes a plurality of sub low noise buffers; Each of the sub low noise buffers receives one of the plurality of sub audio signals and generates a plurality of sub low noise buffer signals of the low noise buffer signal.

2. The audio signal transmission device according to claim 1.

5. The plurality of sub-audio signals includes a plurality of multi-channel signals.

5. The audio signal transmission device according to claim 4.

6. The A / D converter includes a multi-channel A / D converter.

2. The audio signal transmission device according to claim 1.

7. An optical interface receiver and a deserializer are included, the optical interface receiver is configured to receive and convert one of the at least one optical signal and output a communication signal; The deserializer is configured to deserialize the communication signal and output a deserialized signal.

7. An audio signal receiving device adapted to an audio signal transmitting device according to any one of claims 1 to 6.

8. the audio signal receiving device includes a digital speaker amplifier device; The digital speaker amplifier device is configured to convert the deserialized signal into a power output signal.

8. The audio signal receiving device according to claim 7.

9. receiving an audio signal through a low-noise buffer to generate a low-noise buffer signal; converting the low noise buffered signal into a digital signal by an A / D converter; serializing the digital signal with a serializer to output at least one serialized digital signal; converting said at least one serialized digital signal into at least one optical signal by an optical interface transmission device; 13. An audio signal transmission method comprising:

10. The optical interface transmission device includes at least one small package plug-in optical module; The audio signal transmission method includes outputting one of the at least one optical signal from each of the small package plug-in optical modules.

10. The audio signal transmission method according to claim 9.

11. The optical interface transmission device includes at least one small package plug-in optical module and at least one spectrometer device; Each of the at least one spectrometer device receives an output of the at least one small package plug-in optical module, and the audio signal transmission method includes: Each of the at least one spectrometer device receives an output of the at least one small package plug-in optical module and splits the output into a plurality of spectrometer output signals, the plurality of spectrometer output signals of all of the at least one spectrometer device constituting the at least one optical signal.

10. The audio signal transmission method according to claim 9.

12. The audio signal includes a plurality of sub-audio signals, the low-noise buffer includes a plurality of sub-low-noise buffers, and the audio signal transmission method includes: Each of the sub low-noise buffers receives one of the plurality of sub audio signals to generate a plurality of sub low-noise buffer signals of the low-noise buffer signal.

10. The audio signal transmission method according to claim 9.

13. The sub-audio signal includes a plurality of multi-channel signals.

13. The audio signal transmission method according to claim 12.

14. The A / D converter includes a plurality of multi-channel A / D converters.

10. The audio signal transmission method according to claim 9.

15. receiving and converting one of the at least one optical signals by an optical interface receiving device to output a communication signal; A deserializer deserializes the communication signal and outputs a deserialized signal. A method for receiving an audio signal adapted to a method for transmitting an audio signal according to any one of claims 9 to 14.

16. The audio signal receiving method further comprises: converting the deserialized signal to a power output signal by a digital speaker amplifier device.

16. Method for receiving an audio signal according to claim 15.

17. An audio system comprising an audio signal transmitting device, at least one optical fiber device, and at least one audio signal receiving device, The audio signal transmission device includes a low-noise buffer configured to receive an audio signal and generate a low-noise buffer signal; The audio signal transmission device further includes an A / D converter, a serializer, and an optical interface transmission device; the A / D converter is configured to convert the low noise buffered signal into a digital signal; the serializer is configured to serialize the digital signal and output at least one serialized digital signal; the optical interface transmission device converts the at least one serialized digital signal into at least one optical signal and transmits the at least one optical signal to the at least one optical fiber device; Each of the at least one audio signal receiving device includes an optical interface receiving device and a deserializer; the optical interface receiver is configured to receive one of the at least one optical signal from the at least one optical fiber device and output a communication signal; The deserializer is configured to deserialize the communication signal and output a deserialized signal. An audio system characterized by:

18. the audio signal comprises a plurality of multi-channel signals; the low noise buffer includes a plurality of sub-low noise buffers, each of the sub-low noise buffers receiving one of the plurality of multi-channel signals to generate a plurality of sub-low noise buffer signals of the low noise buffer signal; Each of the serialized digital signals corresponds to one of the plurality of multi-channel signals.

20. The audio system of claim 17.

19. The optical interface transmission device includes at least one small-package plug-in optical module, and each of the small-package plug-in optical modules outputs one of the at least one optical signals.

20. The audio system of claim 17.

20. The optical interface transmission device includes at least one small package plug-in optical module and at least one spectrometer device; each of the at least one spectrometer device receives an output of the at least one small package plug-in optical module and splits the output into a plurality of spectrometer output signals; All of the spectrometer output signals of the at least one spectrometer device constitute the at least one optical signal.

20. The audio system of claim 17.

21. Each of the at least one audio signal receiving devices includes a digital speaker amplifier device, the digital speaker amplifier device configured to convert the deserialized signal into a power output signal.

20. The audio system of claim 17.

22. The sound system includes at least one speaker device, and each of the at least one speaker device receives one of the power output signals of the at least one audio signal receiving device and broadcasts a corresponding audio.

22. The audio system of claim 21.

23. The sound system includes an array wrapper device, the array wrapper device receiving the power output signal of each of the at least one audio signal receiving devices and broadcasting a corresponding audio.

22. The audio system of claim 21.

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