CN106407149A - Device and method for adjusting audio transmission of universal sequence bus - Google Patents
Device and method for adjusting audio transmission of universal sequence bus Download PDFInfo
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- CN106407149A CN106407149A CN201510647978.1A CN201510647978A CN106407149A CN 106407149 A CN106407149 A CN 106407149A CN 201510647978 A CN201510647978 A CN 201510647978A CN 106407149 A CN106407149 A CN 106407149A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims description 14
- 238000012546 transfer Methods 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Information Transfer Systems (AREA)
- Communication Control (AREA)
Abstract
The embodiment of the invention discloses a device for adjusting audio transmission of a Universal Serial Bus (USB), which comprises: a buffer processor for receiving and storing an audio data transmitted via a USB and counting the audio data to generate an audio data amount; transmitting a feedback message via an Interrupt Endpoint (Interrupt Endpoint) according to the audio data amount by using a controller; and a transmission adjuster, receiving the feedback information to decide whether to adjust the transmission speed of the audio data. The technical scheme of the embodiment adjusts the transmission of the audio data by returning the feedback information through the interrupt tail end.
Description
Technical field
The apparatus and method that the present invention adjusts with regard to a kind of universal serial bus audio transmission.
Background technology
In the past, analogy audio frequency was play and was often applied in radio, analog television etc., direct with anaiog signal
Drive loudspeaker.With scientific and technological progress, the evolution of the personal computer and the Internet and digit audio frequency signal processing
Development, digit audio frequency play be applied to various electronic systems such as cinema, domestic, automobile etc.
Sound equipment, and DVB-T, various types computer, walkman, mobile phone etc..Wherein audio signal is driven
Dynamic function must possess the characteristic of low noise, high-quality so that acoustics is more sophisticated.
Analogy audio frequency is play and is often applied in radio, analog television etc., directly drives loudspeaker with anaiog signal
?.The transmission of existing digit audio frequency data is in a large number using universal serial bus (Universal Serial
Bus, USB) interface.Such as ordinary circumstance is to be held numerical digit sound by universal serial bus main frame (Host)
Frequency is held according to being sent to universal sequence bus unit (Device).Or using hand-held device by numerical digit sound
Frequency evidence is transferred to adnexa (Accessory) via the interface of universal serial bus.Sound for instantaneity
Frequency according to transmission and is play, and often makes because of the difference between the clock at adnexa end and the clock of hand-held device
Become the damage of voice data, produce the situation playing pause or distortion.In the case, adnexa end can
Via end (Isochronous Endpoint) when waiting, feedback information is returned to hand-held device, to adjust
The transmission of voice data.
Some hand-held devices of above-mentioned situation or the Linux operation of embedded system (Embedded System)
System cannot normally support Non-synchronous Mechanism (Asynchronous Mode), that is, via end when waiting
The function that feedback information is returned by (Isochronous Endpoint).
The present invention proposes a kind of technology of universal serial bus audio transmission adjustment, and adnexa end is via interruption
Feedback information is returned to hand-held device by end (Interrupt Endpoint), and then adjusts voice data
Transmission.
Content of the invention
The embodiment of the present invention can provide with regard to universal serial bus (USB) audio transmission adjustment device with
Method.
A disclosed embodiment is the dress with regard to a kind of adjustment of universal serial bus (USB) audio transmission
Put, this device includes：One buffer, receives and storage is via a universal serial bus transmission
One voice data, and count this voice data to produce an amount of audio data；One controller, foundation
This amount of audio data transmits a feedback information via interrupting end (Interrupt Endpoint)；And one biography
Defeated adjustor, receives feedback information to decide whether to adjust the transfer rate of this voice data.
In an embodiment, this buffer includes a buffer, and this buffer is with sequence
Row mode receives this voice data.
In an embodiment, this buffer includes an enumerator, this audio frequency number of this rolling counters forward
According to producing this amount of audio data.
In an embodiment, this controller is by this amount of audio data and a upper limit amount and lower limit amount ratio
Relatively, to determine this feedback information.
In an embodiment, if according to this feedback information, this transmission regulator represents that this amount of audio data is low
In this lower limit amount, then the transfer rate of this voice data is heightened；If this transmission regulator is anti-according to this
Feedforward information represents that this amount of audio data is higher than this upper limit amount, then adjust the transfer rate of this voice data
Low.
Disclosed another embodiment is with regard to a kind of adjustment of universal serial bus (USB) audio transmission
Method, the method includes：Using a buffer, receive and storage is via universal serial bus
One voice data of transmission, and count this voice data to produce an amount of audio data；Using a control
Device processed, transmits a feedback letter according to this amount of audio data via interrupting end (Interrupt Endpoint)
Breath；And use a transmission regulator, receive feedback information to decide whether to adjust this voice data
Transfer rate.
In an embodiment, this buffer receives this sound in serial fashion using a buffer
Frequency evidence.
In an embodiment, this buffer produces this using this voice data of a rolling counters forward
Amount of audio data.
In an embodiment, this controller is by this amount of audio data and a upper limit amount and lower limit amount ratio
Relatively, to determine this feedback information.
In an embodiment, if according to this feedback information, this transmission regulator represents that this amount of audio data is low
In this lower limit amount, then the transfer rate of this voice data is heightened；If this transmission regulator is anti-according to this
Feedforward information represents that this amount of audio data is higher than this upper limit amount, then adjust the transfer rate of this voice data
Low.
Brief description
Fig. 1 is a schematic diagram consistent with a disclosed embodiment, and a kind of universal serial bus are described
The device of audio transmission adjustment.
Fig. 2 is a schematic diagram consistent with a disclosed embodiment, and the buffered in Fig. 1 is described
Device.
Fig. 3 is a schematic diagram consistent with a disclosed embodiment, illustrates controller according to audio frequency number
According to amount transmission one feedback information.
Fig. 4 is a schematic diagram consistent with a disclosed embodiment, and a kind of universal serial bus are described
(USB) method of audio transmission adjustment.
Wherein, description of reference numerals is as follows：
The device of 100 universal serial bus audio transmission adjustment
110 buffer
111 voice datas
112 amount of audio data
120 controllers
121 feedback informations
130 transmission regulators
410 use a buffer, receive and store the sound via a universal serial bus transmission
Frequency evidence, and count this voice data to produce an amount of audio data
420 use a controller, transmit a feedback information according to this amount of audio data via interrupting end
430 use a transmission regulator, receive feedback information to decide whether to adjust this voice data
Transfer rate
Specific embodiment
Hereinafter, with reference to accompanying drawing, describe in detail according to embodiments of the invention, make this area person
It is apparent to.Described innovation and creation can adopt the embodiment of multiple changes, when can not only limit
In these embodiments.The present invention omit those of ordinary skill in the art it is well known that part (well-known
Part description), and identical reference number represents identical element in the present invention.
The present invention proposes the technology of universal serial bus audio transmission adjustment, and adnexa end is via interruption end
Feedback information is returned to hand-held device by (Interrupt Endpoint), and then adjusts the biography of voice data
Defeated.Fig. 1 is to implement the consistent schematic diagram of example with disclosed one, illustrates that a kind of universal sequence is total
The device of line audio transmission adjustment.
In FIG, the device 100 of this universal serial bus (USB) audio transmission adjustment includes：One
Buffer 110, receives and stores the voice data 111 via a universal serial bus transmission,
And count this voice data to produce an amount of audio data 112；One controller 120, according to this sound
Frequency data volume 112 transmits a feedback information 121 via interrupting end (Interrupt Endpoint)；And
One transmission regulator 130, receives feedback information 121 to decide whether to adjust this voice data 111
Transfer rate.
The enforcement example of the device according to the adjustment of universal serial bus in Fig. 1 (USB) audio transmission, first
First buffer 110, receives and stores the voice data via a universal serial bus transmission
111.Fig. 2 is to implement the consistent schematic diagram of example with disclosed one, and the buffering in Fig. 1 is described
Processor 110.With reference to Fig. 2, a voice data 111 is transmitted by the universal sequence main frame that confluxes.Its
Sound intermediate frequency data is the audio signal data of a sampling.Buffer 110 includes a buffer
210, e.g. one first in first out (First In First out, FIFO) bin, receive in serial fashion
Voice data 111 through universal serial bus transmission.Buffer 110 also includes an enumerator 220
Carry out the capacity of the voice data of institute's buffer storage in count buffer bin 210, to produce voice data
Amount 112, as shown in Figure 2.
The enforcement example of the device according to the adjustment of universal serial bus in Fig. 1 (USB) audio transmission, control
Device 120 processed is anti-via interrupting end (Interrupt Endpoint) transmission one according to this amount of audio data 112
Feedforward information 121.Fig. 3 is to implement the consistent schematic diagram of example with disclosed one, and controller is described
Transmit a feedback information according to amount of audio data.With reference to the enforcement example of Fig. 3, controller 120 can be by
Amount of audio data B is compared with upper limit amount U and lower limit amount L, and determines a feedback information 121.
Wherein upper limit amount U and lower limit amount L are upper limit amount U and lower limit amount L of buffer 210, example
Capacity as assumed buffer 210 is 4Mb (million bit), and determines that upper limit amount U is 3Mb
It is 1Mb with lower limit amount L.Wherein manner of comparison can use such as comparator, to compare news data
Amount B is compared with upper limit amount U and lower limit amount L.If B U is it is determined that feedback information 121 is low frequency
Rate.If B L is it is determined that feedback information 121 is altofrequency.If U>B>L is it is determined that anti-
Feedforward information 121 is normal frequency.If above-mentioned B U, this amount of audio data is higher than that buffer holds
The upper limit of amount, in this buffer, amount of audio data is higher.If above-mentioned B L, represent this audio frequency
Data volume is less than the lower limit of buffer capacity, and in this buffer, amount of audio data is low.
The enforcement example of the device according to the adjustment of universal serial bus in Fig. 1 (USB) audio transmission, passes
Defeated adjustor 130 receives feedback information 121 to decide whether to adjust the transmission speed of this voice data 111
Degree.In implementing example, if the feedback information 121 that transmission regulator 130 receives is altofrequency, table
Show that in buffer, amount of audio data is low, then the transfer rate of this voice data 111 can be adjusted
Whole for upper frequency, that is, heighten transfer rate.In implementing example, if transmission regulator 130 receives
Feedback information 121 be low frequency, represent that in buffer, amount of audio data is higher, then can be by
The transfer rate of this voice data 111 is adjusted to lower frequency, that is, turn down transfer rate.Implementing model
In example, if the feedback information 121 that transmission regulator 130 receives is normal frequency, represent buffer storage
In device, amount of audio data is between upper limit amount U and lower limit amount L, then the transmission of this voice data 111
Speed can not be adjusted.
Example is implemented according to another, a kind of Fig. 4 explanation universal serial bus (USB) audio transmission is adjusted
Whole method, the method includes：Using a buffer, receive and storage is via a universal sequence
One voice data of bus transmission, and count this voice data to produce an amount of audio data (step
410)；Using a controller, according to this amount of audio data via interruption end (Interrupt Endpoint)
Transmit a feedback information (step 420)；And use a transmission regulator, receive feedback information
Decide whether to adjust the transfer rate (step 430) of this voice data.
As it was previously stated, voice data in step 410 is the audio signal data of a sampling.Buffering
Processor can be, for example, a first in first out (First In First out, FIFO) storage using a buffer
Storage, receives the voice data through the transmission of universal serial bus reception interface in serial fashion.At buffering
Reason device it is also possible to use the appearance that an enumerator carrys out the voice data of institute's buffer storage in count buffer bin
Amount, to produce amount of audio data B.
As it was previously stated, at step 420, controller transmits a feedback information according to amount of audio data.
Amount of audio data B can be compared by controller with upper limit amount U and lower limit amount L, and determines that one is anti-
Feedforward information.Wherein upper limit amount U and lower limit amount L are upper limit amount U and lower limit amount L of buffer,
The capacity of such as hypothesis buffer is 4Mb (million bit), and determines that upper limit amount U is 3Mb
It is 1Mb with lower limit amount L.If B L is it is determined that feedback information is altofrequency.If U>B>L,
Then determine that feedback information is normal frequency.If B U is it is determined that feedback information is low frequency.Above-mentioned
If B is L, represent that this amount of audio data is less than the lower limit of buffer capacity, this buffer
Interior amount of audio data is low.If above-mentioned B U, this amount of audio data is higher than buffer capacity
The upper limit, in this buffer, amount of audio data is higher.
As it was previously stated, in step 430, transmission regulator receives feedback information to decide whether to adjust
The transfer rate of this voice data.In implementing example, if the feedback information that transmission regulator receives is
Altofrequency, represents that in buffer, amount of audio data is low, then can be by the transmission of this voice data
Speed is adjusted to upper frequency, that is, heighten transfer rate.In implementing example, if transmission regulator connects
The feedback information received is low frequency, represents that in buffer, amount of audio data is higher, then can will be somebody's turn to do
The transfer rate of voice data is adjusted to lower frequency, that is, turn down transfer rate.In implementing example,
If the feedback information that transmission regulator 130 receives is normal frequency, represent audio frequency number in buffer
According to amount between upper limit amount U and lower limit amount L, then the transfer rate of this voice data can not be carried out
Adjustment.
In sum, the present invention proposes a kind of technology of audio transmission adjustment, via interruption end
Feedback information is returned by (Interrupt Endpoint), and then adjusts the transmission of voice data.
Accompanying drawing disclosed above and explanation, only presently preferred embodiments of the present invention, non-be in order to
Limit the enforcement of the present invention, its institute's spirit under this invention of those of ordinary skill in the art, is made generally
Change or modification, all should cover in scope of the presently claimed invention.
Claims (10)
1. a kind of device of universal serial bus audio transmission adjustment, this device includes：
One buffer, receives and stores the voice data via a universal serial bus transmission,
And count this voice data to produce an amount of audio data；
One controller, transmits a feedback information according to this amount of audio data via interrupting end；And
One transmission regulator, receives this feedback information to decide whether to adjust the transmission speed of this voice data
Degree.
2. device as claimed in claim 1 it is characterised in that this buffer include one delay
Rush bin, this buffer receives this voice data in serial fashion.
3. device as claimed in claim 1 is it is characterised in that this buffer includes a meter
Number devices, this voice data of this rolling counters forward is producing this amount of audio data.
4. device as claimed in claim 1 is it is characterised in that this controller is by this voice data
Amount is compared with a upper limit amount and a lower limit amount, to determine this feedback information.
If 5. device as claimed in claim 4 was it is characterised in that this transmission regulator foundation should
Feedback information represents that this amount of audio data is less than this lower limit amount, then adjust the transfer rate of this voice data
High；If according to this feedback information, this transmission regulator represents that this amount of audio data is higher than this upper limit amount,
The transfer rate of this voice data is turned down.
6. a kind of method of universal serial bus (USB) audio transmission adjustment, including：
Using a buffer, receive and store the audio frequency number via a universal serial bus transmission
According to, and count this voice data to produce an amount of audio data；
Using a controller, transmit a feedback information according to this amount of audio data via interrupting end；With
And
Using a transmission regulator, receive this feedback information to decide whether to adjust the biography of this voice data
Send speed.
7. method as claimed in claim 6 is it is characterised in that this buffer uses one to delay
Rush bin and receive this voice data in serial fashion.
8. method as claimed in claim 6 is it is characterised in that this buffer uses a meter
This voice data of rolling counters forward is producing this amount of audio data.
9. method as claimed in claim 6 is it is characterised in that this controller is by this voice data
Amount is compared with a upper limit amount and a lower limit amount, to determine this feedback information.
If 10. method as claimed in claim 9 was it is characterised in that this transmission regulator foundation should
Feedback information represents that this amount of audio data is less than this lower limit amount, then adjust the transfer rate of this voice data
High；If according to this feedback information, this transmission regulator represents that this amount of audio data is higher than this upper limit amount,
The transfer rate of this voice data is turned down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104125007A TW201705010A (en) | 2015-07-31 | 2015-07-31 | Apparatus and method of USB audio transmission adjustment |
| TW104125007 | 2015-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106407149A true CN106407149A (en) | 2017-02-15 |
Family
ID=58007965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510647978.1A Pending CN106407149A (en) | 2015-07-31 | 2015-10-09 | Device and method for adjusting audio transmission of universal sequence bus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106407149A (en) |
| TW (1) | TW201705010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033781A (en) * | 2018-01-10 | 2019-07-19 | 盛微先进科技股份有限公司 | Audio-frequency processing method, device and non-transitory computer readable media |
| CN112533046A (en) * | 2019-09-18 | 2021-03-19 | 新唐科技股份有限公司 | Audio data synchronization device and method thereof |
| CN113132044A (en) * | 2019-12-30 | 2021-07-16 | 新唐科技股份有限公司 | Audio synchronous processing circuit and method thereof |
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| US20030063627A1 (en) * | 2000-09-08 | 2003-04-03 | Masafumi Toshitani | Synchronization control device |
| TW200921325A (en) * | 2007-11-05 | 2009-05-16 | Holtek Semiconductor Inc | Frequency synchronous apparatus and method |
| TW201010288A (en) * | 2008-08-26 | 2010-03-01 | Holtek Semiconductor Inc | Synchronization device for transmitting real-time audio data by USB |
| CN103561282A (en) * | 2013-10-29 | 2014-02-05 | 联想中望系统服务有限公司 | Streaming media file data transmission method and device |
| CN103973407A (en) * | 2014-05-28 | 2014-08-06 | 北京经纬恒润科技有限公司 | Data transmission rate matching method and device of remote data transmission system |
| CN104320699A (en) * | 2014-10-22 | 2015-01-28 | 络达科技股份有限公司 | Method for dynamically adjusting Bluetooth sounding device |
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2015
- 2015-07-31 TW TW104125007A patent/TW201705010A/en unknown
- 2015-10-09 CN CN201510647978.1A patent/CN106407149A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030063627A1 (en) * | 2000-09-08 | 2003-04-03 | Masafumi Toshitani | Synchronization control device |
| TW200921325A (en) * | 2007-11-05 | 2009-05-16 | Holtek Semiconductor Inc | Frequency synchronous apparatus and method |
| TW201010288A (en) * | 2008-08-26 | 2010-03-01 | Holtek Semiconductor Inc | Synchronization device for transmitting real-time audio data by USB |
| CN103561282A (en) * | 2013-10-29 | 2014-02-05 | 联想中望系统服务有限公司 | Streaming media file data transmission method and device |
| CN103973407A (en) * | 2014-05-28 | 2014-08-06 | 北京经纬恒润科技有限公司 | Data transmission rate matching method and device of remote data transmission system |
| CN104320699A (en) * | 2014-10-22 | 2015-01-28 | 络达科技股份有限公司 | Method for dynamically adjusting Bluetooth sounding device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110033781A (en) * | 2018-01-10 | 2019-07-19 | 盛微先进科技股份有限公司 | Audio-frequency processing method, device and non-transitory computer readable media |
| CN112533046A (en) * | 2019-09-18 | 2021-03-19 | 新唐科技股份有限公司 | Audio data synchronization device and method thereof |
| CN113132044A (en) * | 2019-12-30 | 2021-07-16 | 新唐科技股份有限公司 | Audio synchronous processing circuit and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201705010A (en) | 2017-02-01 |
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