CN208890801U - A kind of Bluetooth adapter of changeable input pattern - Google Patents
A kind of Bluetooth adapter of changeable input pattern Download PDFInfo
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- CN208890801U CN208890801U CN201821930479.9U CN201821930479U CN208890801U CN 208890801 U CN208890801 U CN 208890801U CN 201821930479 U CN201821930479 U CN 201821930479U CN 208890801 U CN208890801 U CN 208890801U
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- bluetooth chip
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Abstract
The utility model discloses 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, 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 utility model, 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 utility model discloses a kind of Bluetooth adapter, especially a kind of Bluetooth adapter of changeable input pattern.
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, this is practical new
Type provides a kind of Bluetooth adapter of changeable input pattern, be connected with multiple interfaces circuit on bluetooth chips, it can be achieved that
Switching between electrical equipment and bluetooth equipment.
The utility model solve its technical problem the technical solution adopted is that: a kind of bluetooth adaptation of changeable input pattern
Device, Bluetooth adapter include 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
Word Audio interface block is connected on the digital audio input interface of Bluetooth chip, and power module is powered to Bluetooth chip, bluetooth
Bluetooth antenna is connected on the antennal interface of chip.
The technical solution that the utility model solves the use of its 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
The USB_DP pin of chip U2 is connected with USB_DN pin, and the VCC in USB interface J1 is connect with+5V power supply, in USB interface J1
GND 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 utility model are: it is existing that the utility model, which is mainly used for simply and rapidly realizing,
Various desktop computers and laptop, common TV etc. increase Bluetooth function, to enable existing telecomputer and week
All bluetooth equipments on side carry out being wirelessly connected the communication with data.The utility model has many functions, comprising: passes through indigo plant
Tooth manager, automatic discovery and management remote Bluetooth devices, resource and service, by simply pulling, between realization bluetooth equipment
The sharing of file, the Relational database and calendar of simple and fast synchronous bluetooth equipment room, passes through bluetooth cellular phone or bluetooth network
Network access point is wirelessly connected local area network and INTERNET, by virtual communication port, using based on serial legacy application,
TV and bluetooth Dongle are connected by 3.5MM tone frequency channel wire, television audio is connected to bluetooth by bluetooth Dongle
Earphone, by wireless transmission, voice can be transmitted with bluetooth headset, and supports SKYPE communication etc..
The utility model is described further below in conjunction with the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit diagram.
Fig. 3 is the utility model Bluetooth chip partial circuit schematic diagram.
Fig. 4 is the utility model usb segment circuit diagram.
Fig. 5 is the interface section the utility model AUX circuit diagram.
Fig. 6 is the utility model digital audio interface partial circuit schematic diagram.
Fig. 7 is the utility model program flow diagram.
Specific embodiment
The present embodiment is the preferred embodiments of the present invention, other its all principles and basic structure are identical as the present embodiment
Or it is approximate, within scope of protection of the utility model.
Incorporated by reference to referring to attached drawing 1, to attached drawing 6, the utility model mainly includes Bluetooth chip, usb interface module, AUX interface
Module, digital audio interface module and power module, usb interface module are connected on the USB interface of Bluetooth chip, AUX interface
Module is connected in the audio interface of Bluetooth chip, and the digital audio input that digital audio interface module is connected to Bluetooth chip connects
On mouth, 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.
When the utility model is used, can by usb interface module, AUX interface module or digital audio interface module with
The connection such as TV, set-top box, computer, makes it have Bluetooth function, by the utility model as interconnecting device, makes TV, machine
Top box, computer etc. can be connect with equipment such as bluetooth headset, Baffle Box of Bluetooth, carry out the broadcasting of bluetooth wireless audio, or pass through bluetooth
Technical transmission data.
Attached drawing 7 is please referred to, when the utility model is used, 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, receiving device is scanned for, is attached if retrieving connection equipment, and turn
Enter audio interface detection, if receiving device is not detected, connects time-out, shut down；
Step S4, it has detected whether optical fiber insertion, if there is optical fiber is inserted into, then audio output has been carried out, if without optical fiber
Insertion 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 inserted without USB
Enter, is then 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 it is defeated to carry out audio
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, if do not changed, turns
Enter in next step；
Step S9, continue audio output；
Step S10, it has exported, has terminated.
The utility model is mainly used for simply and rapidly realizing as existing various desktop computers and notebook electricity
Brain, common TV etc. increase Bluetooth function, so that existing telecomputer and all bluetooth equipments on periphery be enable to carry out nothing
The communication of line connection and data.The utility model has many functions, comprising: by bluetooth manager, automatic discovery and pipe
Remote Bluetooth devices, resource and service are managed, by simply pulling, the sharing of file, simple and fast between realization bluetooth equipment
The Relational database and calendar of synchronous bluetooth equipment room are wirelessly connected local area network by bluetooth cellular phone or blueteeth network access point
And INTERNET, by virtual communication port, using based on serial legacy application, by 3.5MM tone frequency channel wire by TV
It is connected with bluetooth Dongle, television audio is connected to bluetooth headset by bluetooth Dongle, it, can be with by wireless transmission
Bluetooth headset transmits voice, and support SKYPE communication etc..
Claims (6)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930479.9U CN208890801U (en) | 2018-11-22 | 2018-11-22 | A kind of Bluetooth adapter of changeable input pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930479.9U CN208890801U (en) | 2018-11-22 | 2018-11-22 | A kind of Bluetooth adapter of changeable input pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208890801U true CN208890801U (en) | 2019-05-21 |
Family
ID=66518475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821930479.9U Active CN208890801U (en) | 2018-11-22 | 2018-11-22 | A kind of Bluetooth adapter of changeable input pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208890801U (en) |
-
2018
- 2018-11-22 CN CN201821930479.9U patent/CN208890801U/en active Active
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