CN117835204A - Bluetooth adapter capable of switching input modes - Google Patents
Bluetooth adapter capable of switching input modes Download PDFInfo
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- CN117835204A CN117835204A CN202410033685.3A CN202410033685A CN117835204A CN 117835204 A CN117835204 A CN 117835204A CN 202410033685 A CN202410033685 A CN 202410033685A CN 117835204 A CN117835204 A CN 117835204A
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- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000005236 sound signal Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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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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- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The application is a divisional application, the application number of the original application is 2018113975972, the application date is 2018, 11 and 22, and the invention is named as a Bluetooth adapter capable of switching input modes and an implementation method. The invention discloses a Bluetooth adapter capable of switching input modes, which comprises a Bluetooth chip, a USB interface module, an AUX interface module, a digital audio interface module and a power module, wherein the USB interface module is connected to a USB interface of the Bluetooth chip, the AUX interface module is connected to an audio interface of the Bluetooth chip, the digital audio interface module is connected to a digital audio input interface of the Bluetooth chip, the power module supplies power to the Bluetooth chip, and an antenna interface of the Bluetooth chip is connected with a Bluetooth antenna. The invention is mainly used for simply and rapidly realizing the addition of Bluetooth functions for various existing desktop computers, notebook computers, common televisions and the like, thereby enabling the existing computer televisions to be capable of carrying out wireless connection and data communication with all peripheral Bluetooth equipment.
Description
Technical Field
The application is a divisional application, the application number of the original application is 2018113975972, the application date is 2018, 11 and 22, and the invention is named as a Bluetooth adapter capable of switching input modes and an implementation method.
Background
Bluetooth (i.e. Bluetooth): is a wireless technology standard, and can realize short-distance data exchange (using UHF radio waves of ISM wave band of 2.4-2.485 GHz) between fixed equipment, mobile equipment and building personal area network. At present, the common bluetooth applications in people's life are bluetooth headset and bluetooth speaker.
The Bluetooth headset is to apply the Bluetooth technology to the hands-free headset, so that a user can avoid the trouble of annoying wires and can easily talk in various modes. Since the advent of bluetooth headsets, it has been a good tool for the mobile commerce family to increase efficiency.
The Bluetooth sound box is a built-in Bluetooth chip, replaces sound equipment connected by traditional wires through Bluetooth connection, and achieves the purpose of convenience and rapidness through connection with Bluetooth playing equipment such as a mobile phone, a tablet personal computer, a notebook and the like. At present, bluetooth speaker is mainly portable audio amplifier, and the appearance is generally comparatively small and exquisite portable, and bluetooth speaker technique also is paid attention to and is accepted by the consumer gradually by virtue of its convenience people's characteristics, and common bluetooth speaker in the market is mostly single sound channel audio amplifier (Shan Yangsheng units), has also emerged some multichannel audio amplifier (two or more speaker units) that tone quality is excellent simultaneously.
Whether the Bluetooth earphone or the Bluetooth loudspeaker box is adopted, the direct connection mode is adopted, namely, the mobile phone is directly connected with the Bluetooth earphone, and the mobile phone is directly connected with the Bluetooth loudspeaker box. While in home use, many devices do not have bluetooth functionality, such as: television, USB flash disk, set-top box, etc., cannot make Bluetooth connection.
In addition, the existing Bluetooth device can realize the functions of main control processing and ADC processing by adopting a main control chip and a Bluetooth chip, so that the cost is high.
Disclosure of Invention
Aiming at the defect that the household electrical appliance equipment in the prior art cannot be connected with Bluetooth, the invention provides a Bluetooth adapter capable of switching input modes and an implementation method thereof, wherein a plurality of interface circuits are connected on a Bluetooth chip, so that the switching between the electrical appliance equipment and the Bluetooth equipment can be realized.
The technical scheme adopted for solving the technical problems is as follows: the Bluetooth adapter comprises a Bluetooth chip, a USB interface module, an AUX interface module, a digital audio interface module and a power module, wherein the USB interface module is connected to a USB interface of the Bluetooth chip; the Bluetooth chip has a CPU processing function and an audio AD conversion function.
An input mode switching method of a bluetooth adapter capable of switching input modes, the method comprising the following steps:
s1, after the system is started, firstly initializing the system;
step S2, after the system initialization is completed, initializing a protocol stack;
s3, detecting the recovery equipment, if the recovery equipment is detected, detecting an audio interface, if the recovery equipment is not detected, searching the receiving equipment, if the connection equipment is searched, connecting, and transferring the audio interface to detect, if the receiving equipment is not detected, connecting overtime, and shutting down;
s4, detecting whether an optical fiber is inserted, if so, outputting audio, and if not, turning to the next step;
step S5, detecting whether USB is inserted, if so, outputting audio, and if not, turning to the next step;
step S6, detecting whether LineIN is inserted, if so, outputting audio, if not, connecting overtime, and shutting down;
s7, outputting audio;
step S8, detecting whether the audio interface is changed, if so, turning to step S4, and if not, turning to the next step;
s9, continuing audio output;
and step S10, finishing the output.
The technical scheme adopted by the invention for solving the technical problems further comprises the following steps:
the USB interface module comprises a USB interface J1, a DP pin and a DN pin in the USB interface J1 are respectively connected with a USB_DP pin and a USB_DN pin of the Bluetooth chip U2, VCC in the USB interface J1 is connected with a +5V power supply, and GND in the USB interface J1 and the shell are grounded.
The AUX interface module comprises an AUX interface J5, a positive power interface of the AUX interface J5 is connected with a +5V positive power supply through a resistor R47, a right channel interface of the AUX interface J5 is connected with a right channel pin of the Bluetooth chip U2 through a matching resistor R22 and a filter capacitor C9 which are connected in series, and a left channel interface of the AUX interface J5 is connected with a left channel pin of the Bluetooth chip U2 through a matching resistor R23 and a filter capacitor C8 which are connected in series, and the pin of the AUX interface J5 is grounded.
The common terminal of the matching resistor R22 and the filter capacitor C9 is grounded through a resistor R3.
The common end of the matching resistor R23 and the filter capacitor C8 is grounded through a resistor R4.
The digital audio interface module comprises a digital audio interface J2, an input pin in the digital audio interface J2 is connected with an input pin of the Bluetooth chip U2, a clock signal pin in the digital audio interface J2 is connected with a clock signal pin of the Bluetooth chip U2, a synchronous signal pin in the digital audio interface J2 is connected with a synchronous signal pin of the Bluetooth chip U2, and a grounding pin in the digital audio interface J2 is grounded.
The beneficial effects of the invention are as follows: the invention is mainly used for simply and rapidly realizing the addition of Bluetooth functions for various existing desktop computers, notebook computers, common televisions and the like, thereby enabling the existing computer televisions to be capable of carrying out wireless connection and data communication with all peripheral Bluetooth equipment. The present invention has many functions including: through bluetooth manager, automatically discover and manage long-range bluetooth equipment, resource and service, through simple dragging, realize the sharing of file between bluetooth equipment, the relevant database and the calendar between the bluetooth equipment of simple swift synchronization, through bluetooth cell-phone or bluetooth network access point wireless connection LAN and INTERNET, through virtual communication port, use the traditional application program based on serial, link together TV and bluetooth Dongle through 3.5MM audio line, connect the TV audio to bluetooth headset through bluetooth Dongle, through wireless transmission, can transmit the pronunciation with bluetooth headset, and support SKYPE communication etc.. In addition, the Bluetooth function is realized by adopting the Bluetooth chip with the CPU processing function and the audio AD conversion function, the chip is convenient to install, and the cost is greatly reduced.
The invention will be further described with reference to the drawings and detailed description.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Fig. 3 is a schematic circuit diagram of a portion of a bluetooth chip according to the present invention.
FIG. 4 is a schematic diagram of a USB interface portion of the present invention.
Fig. 5 is a schematic circuit diagram of an AUX interface portion of the present invention.
Fig. 6 is a schematic diagram of a portion of the circuitry of the digital audio interface of the present invention.
Fig. 7 is a flowchart of the process of the present invention.
Detailed Description
This example is a preferred embodiment of the present invention, and other principles and basic structures are the same as or similar to those of this example, and all fall within the scope of the present invention.
Referring to fig. 1 to 6, the invention mainly comprises a bluetooth chip, a USB interface module, an AUX interface module, a digital audio interface module and a power module, wherein the USB interface module is connected to the USB interface of the bluetooth chip, the AUX interface module is connected to the audio interface of the bluetooth chip, the digital audio interface module is connected to the digital audio input interface of the bluetooth chip, the power module supplies power to the bluetooth chip, and the antenna interface of the bluetooth chip is connected with a bluetooth antenna.
In this embodiment, the bluetooth chip U2 adopts a bluetooth module with a model number of BTM870, and has a CPU processing function and an audio AD conversion function.
In this embodiment, the USB interface module is mainly a USB interface J1, where the USB interface J1 adopts a miniUSB interface, and in specific implementation, a type-c bluetooth interface, a Micro-USB interface, and other forms may also be adopted, a DP pin and a DN pin in the USB interface J1 are respectively connected with a usb_dp pin and a usb_dn pin of the bluetooth chip U2, VCC in the USB interface J1 is connected with a +5v power supply, and GND and a casing in the USB interface J1 are grounded. The USB device can be connected through the USB interface module.
In this embodiment, the AUX interface module is mainly an AUX interface J5, a positive power interface of the AUX interface J5 is connected with the +5v positive power supply through a resistor R47, a right channel interface of the AUX interface J5 is connected with a right channel pin of the bluetooth chip U2 through a matching resistor R22 and a filter capacitor C9 which are connected in series, and a left channel interface of the AUX interface J5 is connected with a left channel pin of the bluetooth chip U2 through a matching resistor R23 and a filter capacitor C8 which are connected in series, and a pin of the AUX interface J5 is grounded. In this embodiment, the common terminal of the matching resistor R22 and the filter capacitor C9 is grounded through the resistor R3, and the common terminal of the matching resistor R23 and the filter capacitor C8 is grounded through the resistor R4. The audio AUX interface may be connected through an AUX interface module.
IN this embodiment, the digital audio interface module mainly includes a digital audio interface J2, an input pin IN the digital audio interface J2 is connected with an input pin (i.e., pcm_in) of the bluetooth chip U2, a clock signal pin IN the digital audio interface J2 is connected with a clock signal pin (i.e., pcm_clk) of the bluetooth chip U2, a synchronization signal pin IN the digital audio interface J2 is connected with a synchronization signal pin (i.e., pcm_sync) of the bluetooth chip U2, and a ground pin IN the digital audio interface J2 is grounded. The digital audio interface device can be connected through the digital audio interface, and the audio signal can be transmitted through the I2S/SPDIF mode.
In this embodiment, the power module may convert the external power source into +5v power source, +3.3v power source and +1.8v power source, and supply power to the bluetooth chip U2, and the conversion circuit in the power module may use a conventional power conversion circuit.
When the invention is used, the invention can be connected with a television, a set top box, a computer and the like through a USB interface module, an AUX interface module or a digital audio interface module so as to have a Bluetooth function.
Referring to fig. 7, when the invention is used, the connection judgment process is as follows:
s1, after the system is started, firstly initializing the system;
step S2, after the system initialization is completed, initializing a protocol stack;
s3, detecting the recovery equipment, if the recovery equipment is detected, detecting an audio interface, if the recovery equipment is not detected, searching the receiving equipment, if the connection equipment is searched, connecting, and transferring the audio interface to detect, if the receiving equipment is not detected, connecting overtime, and shutting down;
s4, detecting whether an optical fiber is inserted, if so, outputting audio, and if not, turning to the next step;
step S5, detecting whether USB is inserted, if so, outputting audio, and if not, turning to the next step;
step S6, detecting whether a Line IN (i.e. an audio Line) is inserted, if so, outputting the audio, if not, connecting the device overtime, and turning off the device;
s7, outputting audio;
step S8, detecting whether the audio interface is changed, if so, turning to step S4, and if not, turning to the next step;
s9, continuing audio output;
and step S10, finishing the output.
The invention is mainly used for simply and rapidly realizing the addition of Bluetooth functions for various existing desktop computers, notebook computers, common televisions and the like, thereby enabling the existing computer televisions to be capable of carrying out wireless connection and data communication with all peripheral Bluetooth equipment. The present invention has many functions including: through bluetooth manager, automatically discover and manage long-range bluetooth equipment, resource and service, through simple dragging, realize the sharing of file between bluetooth equipment, the relevant database and the calendar between the bluetooth equipment of simple swift synchronization, through bluetooth cell-phone or bluetooth network access point wireless connection LAN and INTERNET, through virtual communication port, use the traditional application program based on serial, link together TV and bluetooth Dongle through 3.5MM audio line, connect the TV audio to bluetooth headset through bluetooth Dongle, through wireless transmission, can transmit the pronunciation with bluetooth headset, and support SKYPE communication etc..
Claims (6)
1. A Bluetooth adapter capable of switching input modes is characterized in that: the Bluetooth adapter comprises a Bluetooth chip, a USB interface module, an AUX interface module, a digital audio interface module and a power module, wherein the USB interface module is connected to a USB interface of the Bluetooth chip, the AUX interface module is connected to an audio interface of the Bluetooth chip, the digital audio interface module is connected to a digital audio input interface of the Bluetooth chip, the power module supplies power to the Bluetooth chip, a Bluetooth antenna is connected to an antenna interface of the Bluetooth chip, the AUX interface module comprises an AUX interface J5, a positive power interface of the AUX interface J5 is connected with a +5V positive power supply through a resistor R47, a right channel interface of the AUX interface J5 is connected with a right channel pin of the Bluetooth chip U2 through a matching resistor R22 and a filter capacitor C9 which are connected in series, a left channel interface of the AUX interface J5 is connected with a left channel pin of the Bluetooth chip U2 through a matching resistor R23 and a filter capacitor C8 which are connected in series, a public end of the matching resistor R22 and the public end of the filter capacitor C9 is grounded through a resistor R3, and a public end of the matching resistor R23 and the filter capacitor C8 is grounded through a resistor R4;
the USB interface module comprises a USB interface J1, wherein a DP pin and a DN pin in the USB interface J1 are respectively connected with a USB_DP pin and a USB_DN pin of the Bluetooth chip U2, VCC in the USB interface J1 is connected with a +5V power supply, and GND in the USB interface J1 and the shell are grounded;
the digital audio interface module comprises a digital audio interface J2, an input pin in the digital audio interface J2 is connected with an input pin of the Bluetooth chip U2, a clock signal pin in the digital audio interface J2 is connected with a clock signal pin of the Bluetooth chip U2, a synchronous signal pin in the digital audio interface J2 is connected with a synchronous signal pin of the Bluetooth chip U2, and a grounding pin in the digital audio interface J2 is grounded;
the Bluetooth chip U2 has a CPU processing function and an audio AD conversion function.
2. The bluetooth adapter of claim 1, wherein the bluetooth chip U2 is model number BTM870.
3. The bluetooth adapter of claim 1, wherein the USB interface J1 is a miniUSB interface, a type-c bluetooth interface, or a Micro-USB interface.
4. The bluetooth adapter of claim 1, wherein the USB interface module is coupled to a USB device.
5. The bluetooth adapter of claim 1, wherein the AUX interface module is coupled to an audio AUX interface.
6. The bluetooth adapter of claim 1, wherein the digital audio interface is coupled to a digital audio interface device for transmitting audio signals in an I2S/SPDIF mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410033685.3A CN117835204A (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410033685.3A CN117835204A (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes |
| CN201811397597.2A 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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| CN201811397597.2A Division CN109286424B (en) | 2018-11-22 | 2018-11-22 | Bluetooth adapter capable of switching input modes and implementation method |
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| CN117835204A true CN117835204A (en) | 2024-04-05 |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN115987334B (en) * | 2022-12-08 | 2024-06-18 | 北京易创智慧科技集团有限公司 | BLE module based on Bluetooth chip and application method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186724C (en) * | 2002-12-31 | 2005-01-26 | 艾威梯软件技术(北京)有限公司 | Method of making bluetooth USB adaptor having man-machine interaction function |
| KR200394556Y1 (en) * | 2005-03-24 | 2005-09-02 | 비티네트웍스 | Bluetooth Serial Adapter combined with USB to Serial converter |
| US20070282471A1 (en) * | 2006-06-01 | 2007-12-06 | Integrated System Solution Corp. | Bluetooth audio chip with multiple input/output sources |
| CN202385095U (en) * | 2012-01-05 | 2012-08-15 | 王邓中 | Bluetooth receiver |
| CN103427883A (en) * | 2013-08-07 | 2013-12-04 | 珠海市杰理科技有限公司 | Bluetooth audio adapter and audio player |
| CN204597962U (en) * | 2015-03-18 | 2015-08-26 | 广东机电职业技术学院 | Industrial blue-tooth module |
| CN204810528U (en) * | 2015-07-20 | 2015-11-25 | 东莞市嘉实通讯有限公司 | Converting circuit based on input of bluetooth audio frequency source |
| CN205754327U (en) * | 2016-06-21 | 2016-11-30 | 深圳市丰景晟电子科技有限公司 | A kind of multifunction blue tooth adapter |
| CN207302613U (en) * | 2017-11-01 | 2018-05-01 | 昊智信息技术（深圳）有限公司 | A kind of portable intelligent sound source |
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2018
- 2018-11-22 CN CN202410033685.3A patent/CN117835204A/en active Pending
- 2018-11-22 CN CN201811397597.2A patent/CN109286424B/en active Active
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| CN109286424B (en) | 2024-02-02 |
| CN109286424A (en) | 2019-01-29 |
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