CN114115787A - Signal transmission method and device for data transmission on audio transmission interface - Google Patents
Signal transmission method and device for data transmission on audio transmission interface Download PDFInfo
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 28
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- 238000004891 communication Methods 0.000 description 5
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- 238000004590 computer program Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/167—Audio in a user interface, e.g. using voice commands for navigating, audio feedback
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Abstract
The invention provides a signal transmission method for data transmission through an audio transmission interface, which comprises the following steps: receiving audio data and first control data generated based on at least a first human-machine interaction behavior; adding the audio data to at least the first data unit; adding the first control data to at least a second data unit; and transmitting a bitstream comprising the first data unit and the second data unit at a transmission rate higher than a sampling rate of the audio data.
Description
Technical Field
The present invention relates to communication transmission, and more particularly, to a signal transmission method and apparatus for data transmission on an audio transmission interface.
Background
Human Machine Interface (HMI) refers to the Interface between a user and a system, such as: computer/electronic systems or mechanical systems, software/hardware providing an interactive approach. With the development and breakthrough of technology, many different types of human-computer interaction devices are often integrated on electronic devices today, such as: key input, voice input, touch input, etc., but this also means diversification of the related signal transmission interface and increase of the complexity of signal transmission.
Disclosure of Invention
Therefore, different signal transmission specifications are brought by different types of human-computer interaction devices, and the transmission interface of the system is more complex and tedious in design from the connector, the transmission line and the data format. Therefore, the present invention provides a signal transmission device and a related method, which can transmit signals generated by different types of human-computer interaction behaviors in the form of digital audio signals. Information generated by keyboard/button presses, mouse controls, microphone voice inputs, and/or touch operations, for example, may be packaged into a data unit for digital audio transmission for transmission via a digital audio transmission interface. Therefore, the invention effectively reduces the complexity of the transmission interface. In addition, the invention also effectively controls the data sampling rate and the transmission rate of the bit stream, and simultaneously transmits audio information and control information with different sampling rates, thereby ensuring the transmission efficiency and the reliability thereof.
The embodiment of the invention provides a signal transmission method for data transmission through an audio transmission interface, which comprises the following steps: receiving audio data and first control data generated based on at least a first human-machine interaction behavior; adding the audio data to at least the first data unit; adding the first control data to at least a second data unit; and transmitting a bitstream comprising the first data unit and the second data unit at a transmission rate higher than a sampling rate of the audio data.
The embodiment of the invention provides a signal transmission device for data transmission through an audio transmission interface. The signal transmission device comprises: a receiving unit, a data unit generator and a transmitting unit. The receiving unit is used for receiving audio data and first control data generated based on at least a first human-computer interaction behavior. The data unit generator is coupled to the receiving unit and configured to add the audio data to at least a first data unit and to add the first control data to at least a second data unit. The transmission unit is coupled to the data unit generator and is configured to transmit a bitstream comprising the first data unit and the second data unit at a transmission rate higher than a sampling rate of the audio data.
Drawings
Fig. 1 is a schematic application diagram of a signal transmission apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a data unit for signal transmission according to an embodiment of the present invention.
FIG. 3 is a schematic diagram of a bitstream generated by a data unit generator according to an embodiment of the present invention.
Fig. 4 is a flowchart of a signal transmission method according to an embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention to the reader. However, those skilled in the art will understand how to implement the invention without one or more of the specific details, or with other methods or elements or materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the core concepts of the invention.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. Thus, the appearances of the phrase "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics described above may be combined in any suitable manner in one or more embodiments.
Fig. 1 is a schematic diagram illustrating an application of a signal transmission apparatus for data transmission on an audio transmission interface according to an embodiment of the present invention. As shown, the control device 10 is wired to the electronic system 20 through the audio transmission interface 200, and transmits a plurality of different types of information on the audio transmission interface 200, thereby controlling the electronic system 20. In embodiments, the control device 10 may be a personal computer, a notebook computer, or various types of user controls, such as: a remote control operative to provide one or more human-computer interaction means to enable user control of the electronic system 20. In various embodiments of the present invention, the control device 10 may include various human interaction hardware 12, such as a keyboard, buttons, a mouse, a microphone, and a touch panel, for sensing control actions of a user. Furthermore, the electronic system 20 may be a set-up box (set-up box), a smart television, and/or a multimedia player device. The electronic system 20 further includes a receiver 21, a controller 22, and a hardware element 23. Wherein, the receiver 21 receives the signal transmitted by the control device 10 through the audio transmission interface 200, and performs corresponding demodulation/decoding operations to obtain the control information sent by the control device 10, and delivers it to the controller 22 to control the hardware element 23. In an embodiment, the audio transport Interface 200 is a Sony/Philips Digital Interface Format (S/PDIF) Interface.
The signal transmission apparatus 100 of the present invention is used to convert the control information generated by the control device 10 into a data format conforming to the communication protocol of the audio transmission interface 200 and transmit the converted control information to the electronic system 20. As shown, the signal transmission apparatus 100 includes: a receiving unit 110, a data unit generator 120, and a transmitting unit 130. The control device 10 may comprise a control information generating unit 15 for generating, according to human-computer interaction behavior performed by a user with respect to the human-computer interaction hardware 12, for example: pressing keyboard/keys, operating mouse, touching touch panel, sending voice indication through microphone, etc. to generate corresponding information. These man-machine interaction behaviors are detected by the control information generating unit 15 and converted into digital signals to be transmitted to the receiving unit 110 of the signal transmission device 100 of the present invention. The receiving unit 110, after receiving the control information provided by the control information generating unit 15, will transmit it to the data unit generator 120.
The data unit generator 120 is used to generate data units conforming to the communication protocol corresponding to the audio transmission interface 200, such as: a frame (frame) or a sub-frame (sub-frame). The data unit may contain various fields such as an audio data field for transmitting audio information and an auxiliary data field for transmitting auxiliary information. The information of the auxiliary data field may contain metadata (metadata) for indicating a sampling rate and a compression state of the audio information. In various embodiments of the present invention, the data unit generator 120 may pack the control information received by the receiving unit 110 and generated based on the man-machine interaction behavior into the audio data field or the auxiliary data field of the data unit.
In the following description, the specific operation and operation principle of the signal transmission apparatus 100 and the related signal transmission method of the present invention will be further explained by taking an S/PDIF interface and its related communication protocol as an example. However, those skilled in the art should understand the essence of the present disclosure that the present inventive concept can be further applied to other types of audio transmission interfaces, and such derived concepts shall fall within the scope of the present invention. Please refer to the S/PDIF data transmission format shown in fig. 2. In the S/PDIF communication protocol, each audio block (block) comprises 192 frames, and each frame comprises two sub-frames corresponding to different audio channels (channels). Furthermore, each subframe contains 32 bits of data. The first four bits are used to record the information required for synchronization, and include B, M, W, which are three different types, respectively indicating the beginning of an audio block and different audio channels. Furthermore, the next 24 bits are an audio data field for recording an audio sample word (audio sample word). In the last 4 bits, the U/V/C field is used to record metadata (metadata) related to audio data, and the P field is used to record parity information. When the signal transmission apparatus 100 of the present invention is applied to the S/PDIF interface, the data unit generator 120 may selectively pack the control information to be transmitted into the audio sample word field and/or the U/V/C field based on the characteristics of the control information to be transmitted, such as the data amount and the sampling rate.
The data unit generator 120 transmits the generated data units (e.g., sub-frames) to the transmission unit 130. The transmission unit 130 transmits the data units to the electronic system 20 in the form of a bit stream through the audio transmission interface 200. In order to allow the fields in the data unit to be left empty, the human-computer interaction information is packaged into the data unit. The transmission unit 130 may transmit the bit stream at a rate higher than the sampling rate of the audio data. In an embodiment, when the sampling rate of the audio data is 16kHz, the transmission unit 130 may transmit the bitstream at a rate of 48 kHz. Thus, during each transmission, a free field in the data unit may be used to transmit information related to human-computer interaction.
FIG. 3 shows an embodiment of a plurality of consecutive data units generated by the data unit generator 120. As shown, the Data unit generator 120 packs audio Data in the audio Data fields Data 1-Data 4 of the Data units SF 1-SF 4. Furthermore, the Data unit generator 120 packs the first control Data CNT1 in the audio Data fields Data 5-Data 6 of the Data units SF 5-SF 6, and packs the second control Data CNT2 in the auxiliary Data field X1 of the Data units SF 1-SF 6. In an embodiment, the sampling rate of the first control data CNT1 is lower than the transfer rate of the bit stream transmitted by the transmission unit 130, and the sampling rate of the second control data CNT2 is higher than the transfer rate of the bit stream transmitted by the transmission unit 130. In an embodiment, the first control data CNT1 may be control information generated by the control information generating unit 15 based on a touch behavior performed by a user on a touch panel (not shown) in the human interaction hardware 12. Furthermore, the second control data CNT2 can be control information generated by the control information generating unit 15 based on the operation behavior of the keyboard, the button or the mouse of the control device 10 by the user, for controlling the hardware element 23 of the electronic system 20, such as an infrared ray signal (IrDA) or a Pulse Width Modulation (Pulse Width Modulation) signal for controlling a Light-emitting diode (not shown) in the hardware element 23 of the electronic system 20.
It is noted that in various embodiments of the present invention, there may be more than one type of first control data CNT1 packed into audio data fields in different data units and more than one type of second control data CNT2 packed into auxiliary data fields in different data units. Among them, the first control data CNT1 may have a relatively low sampling rate and a relatively high data amount with respect to the second control data CNT 2. It is further noted that in different embodiments of the present invention, the data unit generator 120 may only add one kind of control data to consecutive data units, for example, only the first control data CNT1 or the second control data CNT2, depending on the control information that the control device 10 needs to transmit.
FIG. 4 is a flowchart illustrating a method for data transmission on an audio transmission interface according to an embodiment of the invention. As shown in the figure, the method of the present invention comprises the following steps:
step 410: receiving audio data and first control data generated based on at least a first human-machine interaction behavior
Step 420: adding the audio data to at least a first data unit
Step 430: adding the first control data to at least a second data unit
Step 440: transmitting a bitstream comprising the first data unit and the second data unit at a transmission rate higher than a sampling rate of the audio data
Since the principle and the specific details of the above steps have been described in detail in the foregoing embodiments of the signal transmission apparatus 100, the description is not repeated here. It should be noted that the above-described flow may also be better implemented by adding other additional steps to the signal transmission method of the present invention.
To summarize, the present invention packages control information generated by different types of human-computer interaction devices, such as keyboard/button presses, mouse controls, microphone voice inputs, and/or touch operations, into a data unit for digital audio transmission, and transmits the data unit through a digital audio transmission interface. Therefore, the invention effectively reduces the complexity of the transmission interface. In addition, the invention also effectively controls the data sampling rate and the transmission rate of the bit stream, and simultaneously transmits audio information and control information with different sampling rates, thereby ensuring the transmission efficiency and the reliability thereof.
Embodiments of the invention may be implemented using hardware, software, firmware, and combinations thereof. Embodiments of the invention may be implemented using software or firmware stored in memory with an appropriate instruction execution system. In terms of hardware, any of the following techniques, or a combination thereof, may be used to implement the method: individual arithmetic logic devices having logic gates that perform logic functions in accordance with data signals, Application Specific Integrated Circuits (ASICs) having suitable combinational logic gates, Programmable Gate Arrays (PGAs), Field Programmable Gate Arrays (FPGAs), or the like.
The flowcharts and blocks in the flowcharts within this specification illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer software products according to various embodiments of the present invention. In this regard, each block in the flowchart or functional block diagrams may represent a module, segment, or portion of program code, which comprises one or more executable instructions for implementing the specified logical function(s). In addition, each block, and combinations of blocks, in the functional block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer program instructions. These computer program instructions may also be stored in a computer-readable medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable medium implement the function/act specified in the flowchart and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
[ notation ] to show
10 control device
12 human-computer interaction hardware
15 control information generating unit
20 electronic system
21 receiver
22 controller
23 hardware elements
100 signal transmission device
110 receiving unit
120 data unit generator
130 transmission unit
200 audio transmission interface.
Claims (10)
1. A method for data transmission through an audio transmission interface, comprising:
receiving audio data and first control data generated based on at least a first human-machine interaction behavior;
adding the audio data to at least the first data unit;
adding the first control data to at least a second data unit; and
a bitstream comprising the first data unit and the second data unit is transmitted at a transmission rate higher than a sampling rate of the audio data.
2. The method of claim 1, wherein the step of adding the first control data to the second data unit comprises:
and adding the first control data to an audio data field in the second data unit, wherein the sampling rate of the first control data is the same as the sampling rate of the audio data.
3. The method of claim 1, wherein the step of adding the first control data to the second data unit comprises:
adding the first control data to an auxiliary data field in the second data unit, wherein a sampling rate of the first control data is higher than a sampling rate of the audio data.
4. The method of claim 1, further comprising:
receiving second control data generated based on the second human-computer interaction behavior;
the second control data is added to one of the first data unit or the second data unit.
5. The method of claim 1, wherein the first human-machine interaction behavior comprises at least one of pressing a button of a controller, using a microphone for voice input, and using a touch panel for touch operation.
6. The method of claim 1, wherein the audio transmission Interface is a Sony/Philips Digital Interface Format (S/PDIF) Interface.
7. A signal transmission device for data transmission in an audio transmission interface, comprising:
a receiving unit to receive first data for controlling a first device and second data for controlling at least a second device;
a data unit generator, coupled to the receiving unit, for adding control data to at least a first data unit and adding control data to at least a second data unit; and
a transmission unit, coupled to the data unit generator, for transmitting a bitstream comprising the first data unit and the second data unit at a transmission rate higher than a sampling rate of the audio data.
8. The signal transmission device according to claim 7, wherein the data unit generator adds the first control data to an audio data field in the second data unit, and a sampling rate of the first control data is the same as a sampling rate of the audio data.
9. The signal transmission device according to claim 7, wherein the data unit generator adds the first control data to an auxiliary data field in the second data unit, and a sampling rate of the first control data is higher than a sampling rate of the audio data.
10. The signal transmission apparatus according to claim 7, wherein the receiving unit further receives second control data generated based on a second human-computer interaction behavior; and the data unit generator adds the second control data to one of the first data unit or the second data unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010903264.3A CN114115787A (en) | 2020-09-01 | 2020-09-01 | Signal transmission method and device for data transmission on audio transmission interface |
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| CN202010903264.3A CN114115787A (en) | 2020-09-01 | 2020-09-01 | Signal transmission method and device for data transmission on audio transmission interface |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030059057A1 (en) * | 2000-02-02 | 2003-03-27 | Eric Cheng | Control system for digital sound effect and the method of the same |
| CN1976478A (en) * | 2005-12-02 | 2007-06-06 | 三星电子株式会社 | Digital signal receiving apparatus and digital signal transmitting apparatus and method of using the same |
| CN101350190A (en) * | 2007-07-20 | 2009-01-21 | 三星电子株式会社 | Method and apparatus for transmitting and processing audio in inter-IC sound format |
| CN106537929A (en) * | 2014-05-28 | 2017-03-22 | 弗劳恩霍夫应用研究促进协会 | Data processor and transport of user control data to audio decoders and renderers |
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2020
- 2020-09-01 CN CN202010903264.3A patent/CN114115787A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030059057A1 (en) * | 2000-02-02 | 2003-03-27 | Eric Cheng | Control system for digital sound effect and the method of the same |
| CN1976478A (en) * | 2005-12-02 | 2007-06-06 | 三星电子株式会社 | Digital signal receiving apparatus and digital signal transmitting apparatus and method of using the same |
| CN101350190A (en) * | 2007-07-20 | 2009-01-21 | 三星电子株式会社 | Method and apparatus for transmitting and processing audio in inter-IC sound format |
| CN106537929A (en) * | 2014-05-28 | 2017-03-22 | 弗劳恩霍夫应用研究促进协会 | Data processor and transport of user control data to audio decoders and renderers |
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