CN109286424A - A kind of Bluetooth adapter and implementation method of changeable input pattern - Google Patents
A kind of Bluetooth adapter and implementation method of changeable input pattern Download PDFInfo
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- CN109286424A CN109286424A CN201811397597.2A CN201811397597A CN109286424A CN 109286424 A CN109286424 A CN 109286424A CN 201811397597 A CN201811397597 A CN 201811397597A CN 109286424 A CN109286424 A CN 109286424A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 241001062009 Indigofera Species 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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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
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention discloses the Bluetooth adapter and implementation method of a kind of changeable input pattern, Bluetooth adapter includes Bluetooth chip, usb interface module, AUX interface module, digital audio interface module and power module, usb interface module is connected on the USB interface of Bluetooth chip, AUX interface module is connected in the audio interface of Bluetooth chip, digital audio interface module is connected on the digital audio input interface of Bluetooth chip, power module is powered to Bluetooth chip, is connected with Bluetooth antenna on the antennal interface of Bluetooth chip.The present invention, which is mainly used for simply and rapidly realizing, increases Bluetooth function for existing various desktop computers and laptop, common TV etc., so that existing telecomputer and all bluetooth equipments on periphery be enable to carry out being wirelessly connected the communication with data.
Description
Technical field
The present invention discloses a kind of Bluetooth adapter, the Bluetooth adapter of especially a kind of changeable input pattern and realization side
Method.
Background technique
Bluetooth (i.e. Bluetooth): being a kind of wireless technology standard, it can be achieved that fixed equipment, mobile device and building
Short-range data exchange (using the UHF radio wave of the ISM band of 2.4-2.485GHz) between people domain net.Currently, people
Common bluetooth applications are exactly bluetooth headset and Baffle Box of Bluetooth in life.
Bluetooth headset exactly applies Bluetooth technology in hands-free headsets, allows user that can exempt leading for irritating electric wire
It stumbles, the easily call in various ways of comfortable ground.It has been always the good of Mobile Commerce race raising efficiency since bluetooth headset comes out
Tool.
Baffle Box of Bluetooth refers to embedded with bluetooth chip, and the stereo set of traditional wire rod connection is replaced with bluetooth connection, is passed through
It is connect with bluetooths playback equipments such as mobile phone, tablet computer and notebooks, reaches conveniently purpose.Currently, Baffle Box of Bluetooth with
Based on portable sound box, the characteristics of shape is generally more small and exquisite portable, and Baffle Box of Bluetooth technology also relies on it to facilitate people, is gradually consumed
Person payes attention to and receives, and common Baffle Box of Bluetooth is mostly monophonic speaker (single speaker unit) on the market, while also having emerged in large numbers some sounds
Different sound-channel voice box (two or more speaker units) of fine quality.
Either bluetooth headset or Baffle Box of Bluetooth are all by the way of direct-connected, i.e., mobile phone directly connects with bluetooth headset
It connects, the modes such as mobile phone and Baffle Box of Bluetooth are directly connected to.And in the family in use, many equipment do not have Bluetooth function, such as: electricity
Depending on, USB flash disk, set-top box etc., bluetooth connection can not be carried out.
Summary of the invention
The shortcomings that can not carrying out bluetooth connection for domestic electric appliance in the prior art mentioned above, the present invention mentions
For the Bluetooth adapter and implementation method of a kind of changeable input pattern, it is connected with multiple interfaces circuit on bluetooth chips,
The switching between electrical equipment and bluetooth equipment can be achieved.
The technical solution used to solve the technical problems of the present invention is that: a kind of Bluetooth adapter of changeable input pattern,
Bluetooth adapter includes Bluetooth chip, usb interface module, AUX interface module, digital audio interface module and power module, USB
Interface module is connected on the USB interface of Bluetooth chip, and AUX interface module is connected in the audio interface of Bluetooth chip, number
Audio interface block is connected on the digital audio input interface of Bluetooth chip, and power module is powered to Bluetooth chip, bluetooth core
Bluetooth antenna is connected on the antennal interface of piece.
A kind of input mode switching methods of the Bluetooth adapter of changeable input pattern, this method include the following steps:
Step S1, system initialization is carried out after system boot first；
Step S2, after the completion of system initialization, the initialization of protocol stack storehouse is carried out；
Step S3, connection receiving unit detection is carried out back, carries out audio interface detection if detecting back connection receiving unit, if
Connection receiving unit is not detected back, then scans for receiving device, is attached if retrieving connection equipment, and be transferred to sound
The detection of frequency interface, if receiving device is not detected, connects time-out, shuts down；
Step S4, it has detected whether optical fiber insertion, if there is optical fiber is inserted into, has then carried out audio output, if be inserted into without optical fiber,
It is then transferred in next step；
Step S5, it has detected whether USB insertion, if there is USB is inserted into, has then carried out audio output, if be inserted into without USB,
It is transferred in next step；
Step S6, it has detected whether that Line IN is inserted into, if there is Line IN is inserted into, then audio output has been carried out, if do not had
Line IN insertion, then connect time-out, shut down；
Step S7, audio output is carried out；
Step S8, whether detection audio interface changes, and if there is changing, then goes to step S4 and is transferred to down if do not changed
One step；
Step S9, continue audio output；
Step S10, it has exported, has terminated.
The technical scheme adopted by the invention to solve the technical problem further comprises:
The usb interface module includes USB interface J1, the DP pin and DN pin in USB interface J1 respectively with Bluetooth chip
The USB_DP pin of U2 is connected with USB_DN pin, and the VCC in USB interface J1 is connect with+5V power supply, the GND in USB interface J1
And the earthing of casing.
The AUX interface module includes that the positive electricity source interface of AUX interface J5, AUX interface J5 passes through resistance R47 and+5V
Positive supply connection, the build-out resistor R22 and filter capacitor C9 and bluetooth core that the right channel interface of AUX interface J5 passes through series connection
The connection of piece U2 right channel pin, the build-out resistor R23 and filter capacitor C8 that the left channel interface of AUX interface J5 passes through series connection
It is connect with Bluetooth chip U2 left channel pin, the pin ground connection of AUX interface J5.
The common end of the build-out resistor R22 and filter capacitor C9 are grounded by resistance R3.
The common end of the build-out resistor R23 and filter capacitor C8 are grounded by resistance R4.
The digital audio interface module includes digital audio interface J2, the input pin in digital audio interface J2 with
The input pin of Bluetooth chip U2 connects, the clock signal of Clock Signal pin and Bluetooth chip U2 in digital audio interface J2
Pin connects, and the synchronization signal pin in digital audio interface J2 is connect with the synchronization signal pin of Bluetooth chip U2, digital sound
Grounding pin ground connection in frequency interface J2.
The beneficial effects of the present invention are: it is existing various desk-top that the present invention, which is mainly used for simply and rapidly realizing,
Computer and laptop, common TV etc. increase Bluetooth function, to enable all of existing telecomputer and periphery
Bluetooth equipment carries out being wirelessly connected the communication with data.The present invention has many functions, comprising: by bluetooth manager, certainly
Dynamic discovery and management remote Bluetooth devices, resource and service, by simply pulling, the sharing of file between realization bluetooth equipment,
The Relational database and calendar of simple and fast synchronous bluetooth equipment room, it is wireless by bluetooth cellular phone or blueteeth network access point
Local area network and INTERNET are connected, 3.5MM sound is passed through using based on serial legacy application by virtual communication port
Frequency line connects TV and bluetooth Dongle, and television audio is connected to bluetooth headset by bluetooth Dongle, passes through nothing
Line transmission can transmit voice with bluetooth headset, and support that SKYPE is communicated.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Detailed description of the invention
Fig. 1 is circuit block diagram of the present invention.
Fig. 2 is circuit diagram of the present invention.
Fig. 3 is Bluetooth chip partial circuit schematic diagram of the present invention.
Fig. 4 is usb segment circuit diagram of the present invention.
Fig. 5 is the interface section AUX of the present invention circuit diagram.
Fig. 6 is digital audio interface partial circuit schematic diagram of the present invention.
Fig. 7 is present procedure flow chart.
Specific embodiment
The present embodiment is the preferred embodiment for the present invention, other its all principles and basic structure are identical or close as the present embodiment
As, within that scope of the present invention.
Incorporated by reference to referring to attached drawing 1 to attached drawing 6, the invention mainly comprises Bluetooth chip, usb interface module, AUX interface moulds
Block, digital audio interface module and power module, usb interface module are connected on the USB interface of Bluetooth chip, AUX interface mould
Block is connected in the audio interface of Bluetooth chip, and digital audio interface module is connected to the digital audio input interface of Bluetooth chip
On, power module is powered to Bluetooth chip, is connected with Bluetooth antenna on the antennal interface of Bluetooth chip.
In the present embodiment, Bluetooth chip U2 use model BTM870 bluetooth mould group, inside come with CPU processing function
It can be with audio AD conversion function.
In the present embodiment, usb interface module is mainly USB interface J1, and USB interface J1 uses miniUSB interface, specific real
Shi Shi can also use the forms such as type-c formula blue tooth interface, Micro-USB interface, and the DP pin and DN in USB interface J1 draw
Foot is connect with the USB_DP pin of Bluetooth chip U2 and USB_DN pin respectively, and the VCC in USB interface J1 is connect with+5V power supply,
GND and the earthing of casing in USB interface J1.USB device can be connected by usb interface module.
In the present embodiment, AUX interface module is mainly that the positive electricity source interface of AUX interface J5, AUX interface J5 passes through resistance
R47 is connect with+5V positive supply, the build-out resistor R22 and filter capacitor C9 that the right channel interface of AUX interface J5 passes through series connection
It is connect with Bluetooth chip U2 right channel pin, the left channel interface of AUX interface J5 passes through the build-out resistor R23 being connected in series and filter
Wave capacitor C8 is connect with Bluetooth chip U2 left channel pin, the pin ground connection of AUX interface J5.In the present embodiment, build-out resistor R22
It is grounded with the common end of filter capacitor C9 by resistance R3, the common end of build-out resistor R23 and filter capacitor C8 pass through resistance R4
Ground connection.Audio A UX interface can be connected by AUX interface module.
In the present embodiment, digital audio interface module mainly includes digital audio interface J2, in digital audio interface J2
Input pin is connect with the input pin (i.e. PCM_IN) of Bluetooth chip U2, the Clock Signal pin in digital audio interface J2 with
The Clock Signal pin (i.e. PCM_CLK) of Bluetooth chip U2 connects, synchronization signal pin and bluetooth in digital audio interface J2
The synchronization signal pin (i.e. PCM_SYNC) of chip U2 connects, the grounding pin ground connection in digital audio interface J2.Number can be passed through
Word audio interface connects digital audio interface equipment, transmits audio signal by I2S/SPDIF mode.
In the present embodiment, external power supply can be converted into+5V power supply ,+3.3V power supply and+1.8V power supply by power module, be given
Bluetooth chip U2 is powered, and conventional power-switching circuit can be used in the conversion circuit in power module.
In the use of the present invention, can by usb interface module, AUX interface module or digital audio interface module and TV,
The connection such as set-top box, computer, makes it have Bluetooth function, is used as interconnecting device through the invention, makes TV, set-top box, computer
Etc. can connect with equipment such as bluetooth headset, Baffle Box of Bluetooth, the broadcasting of bluetooth wireless audio is carried out, or number is transmitted by Bluetooth technology
According to.
Attached drawing 7 is please referred to, in the use of the present invention, its connection judgment process is as follows:
Step S1, system initialization is carried out after system boot first；
Step S2, after the completion of system initialization, the initialization of protocol stack storehouse is carried out；
Step S3, connection receiving unit detection is carried out back, carries out audio interface detection if detecting back connection receiving unit, if
Connection receiving unit is not detected back, then scans for receiving device, is attached if retrieving connection equipment, and be transferred to sound
The detection of frequency interface, if receiving device is not detected, connects time-out, shuts down；
Step S4, it has detected whether optical fiber insertion, if there is optical fiber is inserted into, has then carried out audio output, if be inserted into without optical fiber,
It is then transferred in next step；
Step S5, it has detected whether USB insertion, if there is USB is inserted into, has then carried out audio output, if be inserted into without USB,
It is transferred in next step；
Step S6, Line IN(i.e. tone frequency channel wire has been detected whether) it is inserted into, if there is Line IN is inserted into, then audio output is carried out,
If be inserted into without Line IN, time-out is connected, is shut down；
Step S7, audio output is carried out；
Step S8, whether detection audio interface changes, and if there is changing, then goes to step S4 and is transferred to down if do not changed
One step；
Step S9, continue audio output；
Step S10, it has exported, has terminated.
The present invention is mainly used for simply and rapidly realizing as existing various desktop computers and laptop, general
The view etc. that is powered increases Bluetooth function, so that all bluetooth equipments on existing telecomputer and periphery be enable to be wirelessly connected
With the communication of data.The present invention has many functions, comprising: by bluetooth manager, automatic discovery and management remote bluetooth
Equipment, resource and service realize the sharing of file between bluetooth equipment, simple and fast synchronous bluetooth is set by simply pulling
Relational database and calendar between standby, by bluetooth cellular phone or blueteeth network access point be wirelessly connected local area network and
INTERNET, by virtual communication port, using based on serial legacy application, by 3.5MM tone frequency channel wire by TV and
Bluetooth Dongle is connected, and television audio is connected to bluetooth headset by bluetooth Dongle, can be with indigo plant by wireless transmission
Tooth earphone transmits voice, and support SKYPE communication etc..
Claims (7)
1. a kind of Bluetooth adapter of changeable input pattern, it is characterized in that: the Bluetooth adapter include Bluetooth chip,
Usb interface module, AUX interface module, digital audio interface module and power module, usb interface module are connected to Bluetooth chip
USB interface on, AUX interface module is connected in the audio interface of Bluetooth chip, and digital audio interface module is connected to bluetooth
On the digital audio input interface of chip, power module is powered to Bluetooth chip, is connected with indigo plant on the antennal interface of Bluetooth chip
Tooth antenna.
2. the Bluetooth adapter of changeable input pattern according to claim 1, it is characterized in that: the USB interface mould
Block includes USB interface J1, the DP pin and DN pin in USB interface J1 respectively with the USB_DP pin and USB_ of Bluetooth chip U2
DN pin connects, and the VCC in USB interface J1 is connect with+5V power supply, GND and the earthing of casing in USB interface J1.
3. the Bluetooth adapter of changeable input pattern according to claim 1, it is characterized in that: the AUX interface mould
Block includes that the positive electricity source interface of AUX interface J5, AUX interface J5 is connect by resistance R47 with+5V positive supply, the right side of AUX interface J5
Channel interface is connect by the build-out resistor R22 and filter capacitor C9 being connected in series with Bluetooth chip U2 right channel pin, and AUX connects
The left channel interface of mouth J5 is connected by the build-out resistor R23 and filter capacitor C8 and Bluetooth chip U2 left channel pin being connected in series
It connects, the pin ground connection of AUX interface J5.
4. the Bluetooth adapter of changeable input pattern according to claim 3, it is characterized in that: the build-out resistor
The common end of R22 and filter capacitor C9 are grounded by resistance R3.
5. the Bluetooth adapter of changeable input pattern according to claim 3, it is characterized in that: the build-out resistor
The common end of R23 and filter capacitor C8 are grounded by resistance R4.
6. the Bluetooth adapter of changeable input pattern according to claim 1, it is characterized in that: the digital audio connects
Mouth mold block includes digital audio interface J2, and the input pin of the input pin in digital audio interface J2 and Bluetooth chip U2 connect
It connects, the Clock Signal pin in digital audio interface J2 is connect with the Clock Signal pin of Bluetooth chip U2, digital audio interface
Synchronization signal pin in J2 is connect with the synchronization signal pin of Bluetooth chip U2, and the grounding pin in digital audio interface J2 connects
Ground.
7. a kind of input mode switching methods of the Bluetooth adapter of changeable input pattern, it is characterized in that: the method packet
Include following step:
Step S1, system initialization is carried out after system boot first；
Step S2, after the completion of system initialization, the initialization of protocol stack storehouse is carried out；
Step S3, connection receiving unit detection is carried out back, carries out audio interface detection if detecting back connection receiving unit, if
Connection receiving unit is not detected back, then scans for receiving device, is attached if retrieving connection equipment, and be transferred to sound
The detection of frequency interface, if receiving device is not detected, connects time-out, shuts down；
Step S4, it has detected whether optical fiber insertion, if there is optical fiber is inserted into, has then carried out audio output, if be inserted into without optical fiber,
It is then transferred in next step；
Step S5, it has detected whether USB insertion, if there is USB is inserted into, has then carried out audio output, if be inserted into without USB,
It is transferred in next step；
Step S6, it has detected whether that Line IN is inserted into, if there is Line IN is inserted into, then audio output has been carried out, if do not had
Line IN insertion, then connect time-out, shut down；
Step S7, audio output is carried out；
Step S8, whether detection audio interface changes, and if there is changing, then goes to step S4 and is transferred to down if do not changed
One step；
Step S9, continue audio output；
Step S10, it has exported, has terminated.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397597.2A CN109286424B (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes and implementation method |
| CN202410033685.3A CN117835204A (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811397597.2A CN109286424B (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes and implementation method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410033685.3A Division CN117835204A (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes |
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| Publication Number | Publication Date |
|---|---|
| CN109286424A true CN109286424A (en) | 2019-01-29 |
| CN109286424B CN109286424B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410033685.3A Pending CN117835204A (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes |
| CN201811397597.2A Active CN109286424B (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes and implementation method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410033685.3A Pending CN117835204A (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes |
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Cited By (2)
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| CN109816967A (en) * | 2019-03-29 | 2019-05-28 | 段石龙 | A kind of control device of collection wireless data transmission and control one |
| CN115987334A (en) * | 2022-12-08 | 2023-04-18 | 北京易创智慧科技集团有限公司 | Bluetooth chip-based BLE module and application method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109286424B (en) | 2024-02-02 |
| CN117835204A (en) | 2024-04-05 |
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