CN101763237B - Plug type audio device and signal processing method - Google Patents
Plug type audio device and signal processing method Download PDFInfo
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- CN101763237B CN101763237B CN200810189001A CN200810189001A CN101763237B CN 101763237 B CN101763237 B CN 101763237B CN 200810189001 A CN200810189001 A CN 200810189001A CN 200810189001 A CN200810189001 A CN 200810189001A CN 101763237 B CN101763237 B CN 101763237B
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Abstract
The invention provides a plug type audio device and signal processing method, which improves the technique of signal quality mainly through a system of sharing a scratch pad memory in a device; in one better embodiment, the plug type audio device is provided with an interface control unit one end of which is connected with a computer system and the other end outputs or receives an audio signal through an audio interface unit; wherein, the plug type audio device is provided with a memory control unit mainly used for arbitrating the scratch pad memory which shall be originally arranged in the device, and at least includes a memory in the interface control unit (like a USB controller) for temporarily storing/converting communication data as well as a memory used for temporarily storing analog/digital signals; the memory control unit can judge whether to use a sharing mode so as to simultaneously control the data busbar of each memory, and increase the temporary memory space of audio, thereby improving the audio quality.
Description
Technical field
The present invention provides a kind of plug type audio device and signal processing method, and a Memory Controller Hub particularly is set in plug type audio device, and each random access memory in the ability integrating apparatus is to increase the scratch-pad memory that message is handled.
Background technology
Except message process chip and relevant connection port that computer system itself is had; Prior art is more utilized general-purpose serial bus (Universal Serial Bus; USB) the USB audio device of connection one circumscribed sees through this USB audio device different message processing schemes is provided.Computer system is passed to the digit audio frequency signal USB audio device that is connected; Wherein processor is periodically handled signal material (for example saying every signa transmission primaries); If with maximum transmitted pattern (burst mode), once can be with data whole end of transmissions in the short time (for example 150 milliseconds).This mode makes this USB audio device itself must possess a scratch-pad memory, in order to keep in the great mass of data that computer system is transmitted.
Fig. 1 shows that a plug type audio device 10 is connected to the synoptic diagram of computing machine 12, typically uses USB interface, and is as shown in the figure; Plug type audio device 10 provides two port,input-outputs; One is earphone jack 15, with the output of analog or digital pattern, is to connect output units such as earphone or loudspeaker mostly; Other has a microphone jack 18, and other source of sound input signal is provided.
The inner scratch-pad memory that possesses has the restriction of its capacity usually in the above-mentioned plug type audio device 10; Capacity must be to meet particular demands; During like the processing audio signal, to there be sampling frequency (sampling rate) to multiply by the temporarily providing room that character length (data word length) multiply by channel number (channel) more at least.This plug type audio device 10 possesses at least two kinds of interface-matching tests and digital type is arranged, and can the audio of receiving be exported again, and inner circuit can be consulted the circuit box synoptic diagram of the plug type audio device of prior art shown in Figure 2.
In the prior art as shown in Figure 2, these plug type audio device 10 inside have two independently internal memories, are used two internal memory runnings independently of one another by interface controller 101 and D/A conversion circuit respectively.Plug type audio device 10 1 ends among the figure see through connecting interface and connect computer system 12; The other end sees through a plurality of I/O port transportation simulator message 14 or digit news 16; Has interface controller 101 in the plug type audio device 10; Be responsible for the handled signal of transfer device, in the middle of have scratch-pad memory 111, to store the signal of dealing.
See through bus 103; Circuit in above-mentioned interface controller 101 and the message interface module 105 electrically connects; Message interface module 105 is the circuit module of processing audio signal; Comprise the simulating music signal interface unit of handling through the conversion of digital-to-analog signal 113, with the digit news interface unit 117 of handling digit news.Wherein simulating music signal interface unit 113 is as analog/digital converter; Can will convert analog signal into from the digital signal of computer system 12; With output simulating music signal 14; Or will convert digital signal into by the analog signal 14 of outside input, wherein have internal memory 115 equally, with temporary signal to be converted.
Digit news interface unit 117 is for handling digital signal; In this example, by the DAB signal of computer system 12 outputs, if export with numeral through this plug type audio device 10; Then need not analog/digital conversion, can directly see through digit news interface unit 117 output digital signals 16.
Summary of the invention
Owing to have limited scratch-pad memory space in the plug type audio device, and limited data storing space constraint the signal processing power of this device.The embodiment of the invention proposes in plug type audio device, to be provided with a memory control circuit, and internal memory independently separately in the utilization plug type audio device utilizes a kind of mode of memory shared, sees through bigger data processing amount and improves sound quality.
The purpose of the embodiment of the invention comprises the mechanism of sharing shared drive in the plug type audio device that sees through; Can make full use of idle memory headroom; Increase the processing power of audio signal; To improve the message quality, comprise increasing sampling frequency or handling longer character length (data word length).
Wherein, The plug type audio device that the embodiment of the invention provided can various embodiments be expressed; Wherein preferred embodiment is that plug type audio device has an interface control unit; Plug type audio device can see through connecting interface and be connected to computer system, specifically wherein has first internal memory of temporary dealing signal; Other has a message interface module, handles the conversion through the digital-to-analog signal of plug type audio device, wherein has second internal memory of temporary dealing data, and uses connection external sound source or signal receiving equipment.The embodiment of the invention mainly is to see through a memory control unit to arrange the usage space between first internal memory and second internal memory, can improve the message quality with Limited resources; Plug type audio device has the external sound source of connection or the message interface module of message receiving trap in addition.
And in another embodiment, remove plug type audio device and include the above-mentioned numeral and the interface control unit of simulation, mainly utilize memory control unit on circuit design, to integrate each internal memory in the original device.
Be summarized as follows and use the signal processing method step that above-mentioned plug type audio device produces; One of embodiment is that audio device receives the signal from computer system thus; Through the conversion signal is the signal that meets the special interface specification; Especially to USB interface, then judge the user mode of each internal memory in the audio device, if the internal memory that desire is shared is by the data occupancy of other application by memory control circuit; Then start an independent working mode, then be directed against single memory address, write data to this internal memory; And output message; If the internal memory that desire is shared is unoccupied, then start one and share pattern, after addressing, write data, export message again.
Two of embodiment receives message by external sound source, if message is digital signal, then need not to carry out the conversion of analog digital signal, but if message is analog signal, then can sees through this audio device and carry out the conversion of analog digital signal.Receive after the message; Memory control circuit can be detected the user mode of each internal memory that institute's desire is integrated in the plug type audio device; And judge whether then that desire shares in have occupied, if judge that the internal memory that desire shares is not occupied, to each sharable memory address; And can write data, and export this computer system to through the internal memory arbitration.
Description of drawings
Fig. 1 is that the prior art plug type audio device is connected synoptic diagram with computing machine;
Fig. 2 is the circuit box synoptic diagram of the plug type audio device of prior art;
Fig. 3 is one of the embodiment circuit box synoptic diagram of the plug type audio device of the embodiment of the invention;
Fig. 4 is the two circuit box synoptic diagram of embodiment of the plug type audio device of the embodiment of the invention;
Fig. 5 is the three-circuit block schematic diagram of embodiment of the plug type audio device of the embodiment of the invention;
Fig. 6 utilizes one of the embodiment process flow diagram of the signal processing method of plug type audio device for the embodiment of the invention;
Fig. 7 utilizes two process flow diagrams of embodiment of the signal processing method of plug type audio device for the embodiment of the invention.
[primary clustering symbol description]
Plug type audio device 10
Earphone jack 15
Simulating music signal 14
Digit news 16
Internal memory 111,115
Simulating music signal interface unit 113
Digit news interface unit 117
Plug type audio device 30
Computer system 32
Interface control unit 301
Bus 303
Message interface module 307
Digit news interface unit 371
Simulating music signal interface unit 373
Memory control unit 309
Internal memory 331,351
Digital signal 34
Analog signal 36
Plug type audio device 40
Computer system 42
Digit news interface unit 451
Simulating music signal interface unit 453
First internal memory 471
Second internal memory 472
Plug type audio device 50
Computer system 52
Message 54
First internal memory 591
Second internal memory 592
Embodiment
Usually; Be used to carry out the device that message handles and can be a plug type audio device; And can handle numeral and the signal of simulating simultaneously; The circuit that wherein is used for digital simulation message conversion can be realized by a kind of trigonometric integral numerical digit analogy converter (delta-sigma DAC), converts the digit news that receives into simulating music signal, wherein and have an internal memory of temporary signal; The circuit that is used to handle digit news then can be specific digits audio transmission interface, like I2S (Inter-IC Sound), SPDIF (Sony/Philips Digital Interconnect Format) or DSD (Direct Stream Digital) etc.
The embodiment of the invention is exactly the shortcoming to scratch-pad memory general only limited in the above-mentioned plug type audio device; A kind of plug type audio device and signal processing method are provided; The one internal memory control mechanism of (or claiming the internal memory arbitration) is set in plug type audio device especially; Utilize each random access memory in the control circuit integrating apparatus, the mode that sees through shared drive reaches and increases the data volume processing power, to improve sound quality.
In order to make full use of the internal memory in each circuit in (sharing) this plug type audio device, the embodiment of the invention utilize one have two kinds of mode of operations Memory Controller Hub, be capable of operating upon traditional independent working mode and and share pattern.For instance; When analogy (simulating music signal interface unit) and numerical digit (digit news interface unit) audio interface must be opened simultaneously; This Memory Controller Hub starts independent working mode, and the internal memory that is connected will be carried out original work, and simulating music signal interface unit (implementing with delta-sigma DAC usually) and the interface control unit (usually with the enforcement of USB controller) that just has an internal memory be operate as normal all; Two physical memory operations independently of one another wherein have no connection.
Under another particular condition; When the simulating music signal interface unit is closed; When only opening the digit news interface unit, above-mentioned Memory Controller Hub operates on one and shares under the pattern, and this moment, the simulating music signal interface unit was closed; Let interface control unit divert the employed internal memory of original simulating music signal interface unit, increase applicable internal memory.
In general; The method that tonequality increases can be used the sampling frequency (sampling rate) of higher frequency and longer character length (data word length); The increase of these two parameters all needs bigger scratch-pad memory; The method that the embodiment of the invention provided can increase the exercisable scratch-pad memory size of this plug type audio device under the situation of the silicon chip area that does not increase whole plug type audio device.Below the explanation embodiment of the invention is used the embodiment that interior each random access memory is put in tipping in addition simultaneously.
Shown in Figure 3 is one of the embodiment circuit box synoptic diagram of the plug type audio device of the embodiment of the invention.Wherein be shown as a plug type audio device 30, the one of which end sees through connecting interface with interface control unit 301 and connects computer system 32, one ends through message interface module 307 connection external device (ED)s.
In a preferred embodiment; Interface control unit 301 is the controller of universal serial bus (USB); Mat USB connecting interface circle is connected to computer system 32; Other end message interface module 307 sees through source of sound or the message receiving trap that one or more I/O port connects external analog or numeral, comprises the analog output mouth of speaker/, or exportable DAB signal; Or the microphone input port, maybe can import the analog or digital signal of other source of sound.
In this preferred embodiment, plug type audio device 30 utilizes interface control unit 301 to transmit the audio signal of dealing plug type audio device 30 and computer system 32, is electrically connected to message interface module 307 through bus 303.Include a digit news interface unit 371 and simulating music signal interface unit 373 in the message interface module 307.Wherein digit news interface unit 371 is connected to external digital source of sound or output unit for handling the digit news of dealing, goes into digital signal 34 with output.Simulating music signal interface unit 373 comprises converting the digital signal that is received from computer system 32 via interface control unit 301 into analog signal that I/O port exports the outside to more then in order to the signal of converting digital and simulation; Or be received from the analog signal that the outside is imported into, and convert it to digital signal.
In this example, interface control unit 301 has a temporary scratch-pad memory 331 that is transmitted to plug type audio device 30 and computer system 32, and these internal memory 331 capacity influence the usefulness that this plug type audio device 30 is handled message simultaneously; And, also having the temporary internal memory 351 that need carry out the audio signal of digital-to-analogue conversion in the message interface module 307, this internal memory 351 is being to be electrically connected on the simulating music signal interface unit 373 on the circuit, is responsible for the signal that temporary this element is handled.In addition, the embodiment of the invention mainly is that a memory control unit 309 is set, and is electrically connected to above-mentioned interface control unit 301 and possesses the internal memory 331,351 that is used for temporary signal with 307 of message interface modules, in order to arrange the usage space of each internal memory 331,351.
Lift the reality that an embodiment details above-mentioned memory control unit 309 and make mode; Memory control unit 309 is electrically connected to interface control unit 301, bus 303 and message interface module 307 simultaneously; And through bus 303 transmission dealing signals; And be electrically connected to the individual internal memory 331,351 of interface control unit 301 and message interface module 307 each self-application simultaneously.Under the situation that need not carry out the digital-to-analog conversion (only handling digital signal); Simulating music signal interface unit 373 is an idle state, and at this moment, memory control unit 309 starts shared model; The dealing signal uses the mode of scratch-pad memory can be divided into two kinds; The respectively sampling frequency of corresponding higher frequency or longer character length are if the capacity of all internal memory 331,351 of interface control unit 303 and simulating music signal interface unit 373 is all identical; Then can use the memory size of twice simultaneously in shared model, sampling frequency then can increase to 96kHz by 48kHz.
Under this kind operating mode; Every document size doubled more originally, and read or when writing data at every turn, two internal memories 331; 351 address bus-bar (address bus) content is identical, and then the data bus of two internal memories (data bus) on average writes or read 50% data.Under another operating mode, when character length increased to the N position by 16 (bit), N was the positive integer greater than 16; When reading at every turn or writing data; The address bus-bar content of two internal memories 331,351 is identical, in this example; And 1～16 write memory 331, remaining position (N-16) write memory 351.309 needs of the memory control unit that the embodiment of the invention proposed are controlled the data bus of internal memory 331,351 respectively, do not need to handle the address bus-bar respectively, have reduced the complexity of design.
The two circuit box synoptic diagram of the embodiment of plug type audio device of the present invention as shown in Figure 4.This embodiment shows the circuit that is provided with treatment of simulated and DAB signal in the plug type audio device 40, and the embodiment of the invention further sees through the memory control unit 407 that the control data access is set, can the idle memory headroom of flexible application.
For the boundary connects computer system 42 and external sound source or the plug type audio device of audio output device 40, be in one embodiment to connect computer system 42 shown in the figure, external message processing capacity is provided with USB interface.Have interface control unit 401 in the plug type audio device 40, be used to handle the data that transmit or be received from computer system 42, see through bus 403 and electrically connect with message interface module 405.In this example; Message interface module 405 has external output and input interface; Can the sound signal that computer system 42 produces be converted into simulation or digital signal output; Or receive outside signal, and be passed to computer system 42 through converting digital signal into, have digit news interface unit 451 and simulating music signal interface unit 453 in the message interface module 405.
In preferred embodiment, be the source of sound of numeral if connect outside signal source, or the receiving trap of numeral (as seeing through source of sound or the output unit that optical fiber connects), signal will pass through digit news interface unit 451 output/reception digital signals 44; Otherwise, receive if desired or the signal of output is an analog signal 46, then can cross simulating music signal interface unit 453 combine digital/analog-converted.
The embodiment of the invention mainly is provided with a memory control unit 407 in this plug type audio device 40; In this example; Plug type audio device 40 directly utilizes memory control unit 407 on circuit design, to integrate each internal memory in the original device, and memory control unit 407 can be connected directly to former first internal memory 471 of interface control unit 401 and second internal memory 472 of message interface module 405 temporary digital-to-analog conversion signals of being used on circuit; Or utilize a circuit module, each internal memory is integrated in wherein.As stated; When plug type audio device 40 when handling digital signal; 472 of second internal memories that are applied to message interface module 405 are idle, and memory control unit 407 is a shared model, and memory control unit 407 can be integrated first internal memory 471 and second internal memory 472; When if plug type audio device 40 is the treatment of simulated signal, then memory control unit 407 starts independent working mode, and promptly first internal memory 471 and second internal memory 472 work alone in the scratch-pad memory of interface Data transmission the scratch-pad memory when changing with signal respectively.
Under the particular implementation aspect, plug type audio device can be provided with micro-control unit (MCU), and outside script message was handled, the function that can provide more signals to handle was like volume control, the conversion of analog/digital message, power management etc.In another embodiment of the present invention; Form the circuit of Fig. 3 and Fig. 4 middle pitch communication interface module; Or carry out the circuit that the analog/digital signal is changed in this message interface module, then can be included in this micro-control unit, and use this micro-control unit applied scratch-pad memory originally.
The micro-control unit framework of standard all can include the above data internal memory (RAM) of 256Bytes; The embodiment of the invention proposes configuration diagram as shown in Figure 5, through second internal memory 592 of first internal memory 591 in the memory control unit 509 shared interface control units 501 with micro-control unit 505.
Plug type audio device 50 as shown in Figure 5, one of which end see through interface control unit 501 and connect computer system 52, one ends then through message interface unit 507 connection external sound source or output units (54).In plug type audio device 50; See through bus 503 and electrically connect interface control unit 501, micro-control unit 505, message interface unit 507 and memory control unit 509, in this example, memory control unit 509 has been integrated former first internal memory 591 that is used for temporal data in interface control unit 501; With former in be built in second internal memory 592 of micro-control unit 505; Have shared model equally, can share two memory headrooms, independent working mode then is to be to save as in two to work alone.
In plug type audio device 50 work, micro-control unit 505 will can be used for the conversion of analog/digital signal, and the signal of warp conversion sees through message interface unit 507 and passes through bus 503; After can seeing through message interface unit 507 reception message 54 equally,, put computer system 52 by interface control unit 501 transmission through micro-control unit 505 conversions.Under shared model; Every operable internal memory of data is bigger, reads or when writing data, memory control unit 509 distributes two internal memories 591 at every turn; 592 address bus-bar (address bus) and data bus (data bus), the address that control data writes.
The signal processing method of the plug type audio device that the application embodiment of the invention provides can be consulted process flow diagram shown in Figure 6; See through this plug type audio device and receive signal (step S601) from computer system; Because it is online mostly main embodiment is to see through USB interface; So can carry out the signal conversion through interface control unit earlier; With the conversion signal is the signal that meets the special interface specification, other also applicable to 1394, the connecting interface of tandems (serial link) such as Ethernet, HDMI, and mostly with the numerical digit connecting interface (step S603) of package (packet) kenel as the least unit of data transmission.
Then, see through memory control circuit and judge internal memory user mode (step S605), judge the use situation of each internal memory in this plug type audio device; Comprise and judge whether occupied other application that is used for; Like temporary digital-to-analog data converted, or be used to other purposes (step S607), if the internal memory occupied (being) that desire is shared; Scratch-pad memory in the time of possibly being used to the digital-to-analog conversion; Then be regarded as general independent working mode, each internal memory is not shared, and message is handled then shown in step S609; To single internal memory (like the scratch-pad memory of former interface control unit) addressing, and execution in step S611 writes data, digital-to-analog message conversion (step S613) and output message (simulation) (step S615).
If judge that through memory control circuit internal memory can be used for sharing, this can export digit news to outside and be example, then then carries out addressing shared drive (step S617); Because available internal memory increases,, see through memory control circuit to each memory address so every data can increase; Can on average write or read 50% data like this; Or write each shared memory address in proper order, and just fill up after first internal memory, continue to insert second internal memory again.The method that the embodiment of the invention proposed only need be controlled the data bus of internal memory respectively, does not need to handle the address bus-bar respectively, has reduced the complexity of design.
Then each internal memory is write data (step S619) according to the address, and output message (step S621).
And signal processing method shown in Figure 7 is the embodiment process flow diagram that is received from the input of external analog source of sound.
Receive the message of input at the beginning of the step from external sound source; Like analog signal from the microphone input, or the digital signal (step S701) of other sound source input, if input signal is a digital signal; Because receiving end is a computer system, then need not to carry out the conversion of analog digital signal; If input signal is an analog signal; Then then carry out analog digital signal conversion (ADC) (step S703) through this plug type audio device; Convert digital signal into; Then see through the user mode (step S705) of each internal memory in the device that the memory control circuit detecting integrated, and judge that desire whether shares in have occupied (step S707).
If judge this internal memory occupied (being); Represent that this internal memory operates; As just be used in temporary other data; Then can't share, memory control circuit promptly to single memory address (like the scratch-pad memory of interface control unit) (step S711), writes data (step S713) afterwards and exports computer system (step S715) to.
If judge the internal memory not occupied (denying) that desire is shared, then, write data (step S713) afterwards to each sharable memory address (step S709); As stated; But the memory address that mean allocation is shared to be writing data, or writes in proper order, when using former first internal memory; Utilize the space of second internal memory to write data again, export computer system (step S715) at last to.
What deserves to be mentioned is; When reality is implemented; Above-mentioned plug type audio device with micro-control unit can see through micro-control unit and select sharable memory size in second internal memory; And (Special Function Register SFR) sets the address of shared drive to increase the specific function buffer newly.
Control the firmware parameter afterwards, the scratch-pad memory that is placed on this block to temporary parameter such as parameter USB Descriptor, when not having USB ISO Transfer, shared scratch-pad memory is the micro-control unit action reading or write thus; Or when USB ISO Transfer worked, micro-control unit can be cut memory control circuit (or claiming moderator) right to use to interface control unit and use.
In sum; The present invention is a plug type audio device and signal processing method; Mainly be that a memory control circuit is set in above-mentioned plug type audio device, can judge whether to quote shared drive, can extra increase memory size under this framework; The mechanism that but can see through memory shared increases the data quantity of audio, and then promotes tonequality.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle according to the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (12)
1. a plug type audio device is characterized in that, comprising:
One interface control unit sees through a connecting interface and is electrically connected to a computer system, electrically connects first internal memory of a temporary dealing signal;
One message interface module; Electrically connect said interface control unit; Said message interface module electrically connects second internal memory of a temporary conversion signal in the conversion that receives the laggard line of numbers/analog signal of signal, and to export or to receive the audio signal of analog or digital respectively; And
One memory control unit; Electrically connect said first internal memory and said second internal memory; Be used to control the data bus of said first internal memory and said second internal memory in the said device; Arrange the address bus-bar and the data bus of said first internal memory and said second internal memory, the address that control data writes;
Wherein, The operating state of said memory control unit comprises that one shares a pattern and an independent working mode; Said memory control unit saves as in said second when leaving unused; Start said shared model, promptly said memory control unit is integrated said first internal memory and said second internal memory, shares the memory headroom of said first internal memory and said second internal memory; When said message interface module running analog/digital signal is changed; And said second internal memory is non-when idle; Start said independent working mode; Be that said memory control unit is controlled said first internal memory and said second internal memory respectively, said first internal memory and the work independently of one another of said second internal memory.
2. plug type audio device as claimed in claim 1; It is characterized in that; Said message interface module comprises a simulating music signal interface unit and a digit news interface unit; Said message interface module sees through said simulating music signal interface unit and said digit news interface unit, connects the source of sound or the message receiving trap of external analog or numeral through one or more I/O port, and sees through the conversion of said simulating music signal interface unit combine digital/analog signal.
3. plug type audio device as claimed in claim 1 is characterized in that, the micro-control unit that said message interface module sees through is wherein carried out the conversion of analog digital signal.
4. plug type audio device as claimed in claim 1 is characterized in that, said memory control unit is integrated said first internal memory and said second internal memory in the said plug type audio device on circuit design.
5. the signal processing method of a plug type audio device is characterized in that, comprising:
Reception is from the signal of a computer system;
Changing said signal is the signal that meets the special interface specification;
Judging the user mode of each internal memory in the said plug type audio device, is that the memory control circuit that sees through in the said plug type audio device is judged;
If the internal memory that desire is shared is then started an independent working mode by the data occupancy of other application, then be directed against single memory address, write data to single internal memory; And output message;
If the internal memory that desire is shared is unoccupied, then starts one and share pattern;
The memory address of said memory control circuit to sharing;
After the internal memory arbitration, write data; And
Output message.
6. signal processing method as claimed in claim 5 is characterized in that, sees through said memory control circuit and controls the data bus of each internal memory in the said plug type audio device, and distribute the address bus-bar and the data bus of each internal memory, carries out addressing.
7. signal processing method as claimed in claim 6 is characterized in that, under said shared model, utilizes the specific function buffer that increases newly to set the address of shared drive, and data on average write each internal memory.
8. signal processing method as claimed in claim 6 is characterized in that, under said shared model, utilizes the specific function buffer that increases newly to set the address of shared drive, and data write each internal memory in proper order.
9. the signal processing method of a plug type audio device is characterized in that, comprising:
Receive message;
If said message is digital signal, then need not to carry out the conversion of analog digital signal; If said message is analog signal, then carry out the conversion of analog digital signal;
Detect the user mode of each internal memory that institute's desire is integrated in the said plug type audio device;
Have occupied in judging whether that desire shares;
If judge that said internal memory is occupied promptly to single memory address; Write data to single internal memory; And output digit news to a computer system;
If judge that the shared internal memory of desire is not occupied, to each sharable memory address;
After the internal memory arbitration, write data; And
The output digit news is to said computer system.
10. signal processing method as claimed in claim 9 is characterized in that, sees through the work that a memory control circuit is carried out detecting, each internal memory of addressing.
11. signal processing method as claimed in claim 10; It is characterized in that; See through said memory control circuit and control the data bus of each internal memory in the said plug type audio device, and distribute the address bus-bar and the data bus of each internal memory, carry out addressing; When the internal memory of wherein sharing in desire is unoccupied, utilize the specific function buffer that increases newly to set the address of shared drive.
12. signal processing method as claimed in claim 11 is characterized in that, data are on average to write shared drive or write shared drive in proper order.
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| TWI621947B (en) * | 2017-05-19 | 2018-04-21 | 瑞昱半導體股份有限公司 | Method for controlling audio device and system thereof |
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