CN108519868A - A kind of usb audio expander - Google Patents

A kind of usb audio expander Download PDF

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Publication number
CN108519868A
CN108519868A CN201810264868.0A CN201810264868A CN108519868A CN 108519868 A CN108519868 A CN 108519868A CN 201810264868 A CN201810264868 A CN 201810264868A CN 108519868 A CN108519868 A CN 108519868A
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CN
China
Prior art keywords
usb
resistance
connect
capacitance
poles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810264868.0A
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Chinese (zh)
Inventor
刘保强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Lingfei Electronic Science And Technology Co Ltd
Original Assignee
Guangzhou Lingfei Electronic Science And Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Lingfei Electronic Science And Technology Co Ltd filed Critical Guangzhou Lingfei Electronic Science And Technology Co Ltd
Priority to CN201810264868.0A priority Critical patent/CN108519868A/en
Publication of CN108519868A publication Critical patent/CN108519868A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
    • 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
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • 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
    • G06F13/40—Bus structure
    • G06F13/4004—Coupling between buses
    • G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Power Sources (AREA)

Abstract

A kind of usb audio expander, including AUX audio input ends, audio processing modules, power module, switching module, audio output and signal source module, audio processing modules are connect with AUX audio input ends, power module, switching module and signal source module respectively, switching module is connect with audio output, audio output includes USB interface Andriod USB, USB interface PORT USB, USB interface U202 USB and USB interface CD USB, and audio processing modules control each USB interface by switching module；While solution automobile does not have AUX audio input functions, it is four kinds of different USB interfaces to expand for one point four, solves the problems, such as that automobile USB interface is few, and can switch different USB interfaces by switching module, the energization of each USB interface of independent control, power blackout situation save electric power.

Description

A kind of usb audio expander
Technical field
The present invention relates to usb expansion device field, especially a kind of usb audio expander.
Background technology
Usb expansion device, i.e. USBHUB belong to computer peripheral product, can a USB port be extended to 2 or more. It is only suitable for the external equipment not high to power reguirements, because no matter point several, all only one U mouthfuls of power supply volume, so getting More, each branch U mouthfuls of power supply will be smaller, if external equipment is larger to power demands, just cannot be satisfied external equipment It is required that natural external equipment will can not be used because of electricity shortage.
The automobile of the prior art has not had AUX input units, and the channels automobile USB of the prior art cannot support institute There is the usb protocol of general mobile phone to play music, market demand AUX input channels transmit audio signal, and the prior art Automobile only there are one USB functional interfaces.
Invention content
In order to overcome the disadvantages mentioned above of the prior art, the object of the present invention is to provide a kind of usb audio expanders, by soft or hard Part combination virtual audio constitutes digital usb protocol function, has the function of AUX audio inputs, has multiple and different USB interfaces, The energization of the energy each USB interface of independent control, power blackout situation.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of usb audio expander, including AUX audio input ends, audio processing modules, power module, switching mould Block, audio output and signal source module, the audio processing modules respectively with the AUX audio input ends, power module, Switching module is connected with signal source module, the power module respectively with the audio processing modules, switching module It is connected with signal source module, the switching module is connect with the audio output, and the audio output includes that USB connects Mouth Andriod-USB, USB interface PORT-USB, USB interface U202-USB and USB interface CD-USB, the audio processing modules Each USB interface is controlled by the switching module；
The switching module includes first switch switching circuit, and the first switch switching circuit includes that switching switchs USB-SW, resistance R140, triode Q10, resistance R143, triode Q11, resistance R134, resistance R141 and field-effect tube Q9, institute It states switching switch USB-SW to connect with the base stage of the triode Q10 by resistance R140, the collector of the triode Q10 is logical It crosses the resistance R143 to connect with the base stage of the triode Q11, the collector of the triode Q11 passes through the resistance R134 It is connect with the grid of the field-effect tube Q9, the drain electrode of the field-effect tube Q9 connects 5V power supplys, the source electrode of the field-effect tube Q9 It connect with the USB interface CD-USB and is connect with the resistance R134 by resistance R141 in parallel.
As a further improvement on the present invention：The switching module includes second switch switching circuit, and described second Switch switching circuit includes switching switch USB-SW2, resistance R147, triode Q13, resistance R146, resistance R145, field-effect tube Q12 and capacitance CA5, the switching switch USB-SW2 are connect by resistance R147 with the base stage of the triode Q13, and described three The emitter of pole pipe Q13 is grounded, and the collector of the triode Q13 passes through the resistance R146's and field-effect tube Q12 Grid connects, and the drain electrode of the field-effect tube Q12 connects 5V power supplys and is grounded by capacitance CA5, the source electrode of the field-effect tube Q12 It connect with the USB interface CD-USB and is connect with the resistance R146 by resistance R145 in parallel.
As a further improvement on the present invention：The switching module includes switch chip U5, the switch chip U5 The anode of the poles HSD1+ and the USB interface Andriod-USB connect, the poles HSD1- of the switch chip U5 and the USB The cathode of interface Andriod-USB connects.
As a further improvement on the present invention：The switching module includes switch chip U6, the switch chip U6 HSD1+Pole is connect with the anode of the USB interface U202-USB, the HSD1 of the switch chip U6-Pole and the USB interface The cathode of U202-USB connects, the HSD2 of the switch chip U6+Pole is connect with the anode of the USB interface PORT-USB, institute State the HSD2 of switch chip U6-Pole is connect with the cathode of the USB interface PORT-USB.
As a further improvement on the present invention：The signal source module includes processing chip U4, crystal oscillator Y1, capacitance C9 and electricity Holding C8, the poles XIN/FIN of the processing chip U4 are connect by capacitance C9 and capacitance C8 with its pole XOUT, and the 1 of the crystal oscillator Y1 Foot is connected between the poles XIN/FIN and capacitance C9 of the processing chip U4, and 2 feet of the crystal oscillator Y1 are connected on the capacitance C9 and electricity It between appearance C8 and is grounded, 3 feet of the crystal oscillator Y1 are connected between the poles XOUT and capacitance C8 of the processing chip U4.
As a further improvement on the present invention：The audio processing modules include processing chip U1, resistance R4, resistance R5, Capacitance C12, capacitance C13, processing chip U3, resistance R6, resistance R7, resistance R9, resistance R8 and resistance R10, the processing chip The poles LRCK of U1 are connect by resistance R9 with the poles PA4 of the processing chip U3, and the poles BCK of the processing chip U1 pass through resistance R10 is connect with the poles PA5 of the processing chip U3, and the poles DOUT of the processing chip U1 pass through resistance R8 and the processing chip The poles PA7 of U3 connect, and the poles MD1 of the processing chip U1 connect 3.3V power supplys, the poles MD0 of the processing chip U1 by resistance R4 3.3V power supplys are connect by resistance R5, the poles VinL of the processing chip U1 are grounded by capacitance C12, the processing chip U1's The poles VinR are grounded by capacitance C13.
As a further improvement on the present invention：The power module includes power supply chip U2, capacitance CA1 and capacitance CA2, institute The poles IN1 for stating power supply chip U2 connect its pole IN2 and connect 5V power supplys, and the poles OUT1 of the power supply chip U2 are connect by capacitance CA1 Ground simultaneously connects 3.3V power supplys, and the poles IN2 of the power supply chip U2 are grounded by capacitance CA2.
Compared with prior art, the beneficial effects of the invention are as follows：
Structure of the invention is new reasonable, and digital usb protocol function is constituted by software and hardware combining virtual audio, existing in solution While the automobile of technology does not have AUX audio input functions, it is four kinds of different USB interfaces to expand for one point four, solves existing skill The few problem of the automobile USB interface of art, and different USB interfaces can be switched by switching module, can independent control it is each The energization of USB interface, power blackout situation save electric power.
Description of the drawings
Fig. 1 is the block schematic illustration of the present invention.
Fig. 2 is the circuit diagram of power module.
Fig. 3 is the circuit diagram of audio processing modules.
Fig. 4 is the circuit diagram of signal source module.
Fig. 5 is the circuit diagram of switching module.
Specific implementation mode
In conjunction with description of the drawings, the present invention is further described with embodiment：
According to Fig. 1, a kind of usb audio expander, including AUX audio input ends, audio processing modules, power supply mould Block, switching module, audio output and signal source module, the audio processing modules are defeated with the AUX audios respectively Enter end, power module, switching module are connected with signal source module, the power module respectively with the audio frequency process mould Block, switching module are connected with signal source module, and the switching module is connect with the audio output, the audio Output end includes USB interface Andriod-USB, USB interface PORT-USB, USB interface U202-USB and USB interface CD-USB, The audio processing modules control each USB interface by the switching module.
According to Fig.5, the switching module includes first switch switching circuit, the first switch switching circuit Including switching switch USB-SW, resistance R140, triode Q10, resistance R143, triode Q11, resistance R134, resistance R141 and Field-effect tube Q9, the switching switch USB-SW are connect by resistance R140 with the base stage of the triode Q10, the triode The collector of Q10 is connect by the resistance R143 with the base stage of the triode Q11, and the collector of the triode Q11 is logical It crosses the resistance R134 to connect with the grid of the field-effect tube Q9, the drain electrode of the field-effect tube Q9 connects 5V power supplys, the field The source electrode of effect pipe Q9 connect with the USB interface CD-USB and is connect with the resistance R134 by resistance R141 in parallel.
According to Fig.5, the switching module includes second switch switching circuit, the second switch switching circuit Including switching switch USB-SW2, resistance R147, triode Q13, resistance R146, resistance R145, field-effect tube Q12 and capacitance CA5, the switching switch USB-SW2 are connect by resistance R147 with the base stage of the triode Q13, the triode Q13's Emitter is grounded, and the collector of the triode Q13 is connect by the resistance R146 with the grid of the field-effect tube Q12, The drain electrode of the field-effect tube Q12 connects 5V power supplys and is grounded by capacitance CA5, source electrode and the USB of the field-effect tube Q12 Interface CD-USB connections are simultaneously connect by resistance R145 in parallel with the resistance R146.
According to Fig.5, the switching module includes switch chip U5, the poles HSD1+ of the switch chip U5 with The anode connection of the USB interface Andriod-USB, the poles HSD1- of the switch chip U5 and the USB interface Andriod- The cathode of USB connects.
According to Fig.5, the switching module includes switch chip U6, the HSD1 of the switch chip U6+Pole with The anode connection of the USB interface U202-USB, the HSD1 of the switch chip U6-Pole is with the USB interface U202-USB's Cathode connects, the HSD2 of the switch chip U6+Pole is connect with the anode of the USB interface PORT-USB, the switch chip The HSD2 of U6-Pole is connect with the cathode of the USB interface PORT-USB.
According to Fig.4, the signal source module includes processing chip U4, crystal oscillator Y1, capacitance C9 and capacitance C8, the place The poles XIN/FIN of reason chip U4 are connect by capacitance C9 and capacitance C8 with its pole XOUT, and 1 foot of the crystal oscillator Y1 is connected on the place Between the poles XIN/FIN and capacitance C9 of managing chip U4,2 feet of the crystal oscillator Y1 are connected between the capacitance C9 and capacitance C8 and connect 3 feet on ground, the crystal oscillator Y1 are connected between the poles XOUT and capacitance C8 of the processing chip U4.
According to Fig.3, the audio processing modules include processing chip U1, resistance R4, resistance R5, capacitance C12, capacitance C13, processing chip U3, resistance R6, resistance R7, resistance R9, the LRCK of resistance R8 and resistance R10, the processing chip U1 are extremely logical It crosses resistance R9 to connect with the poles PA4 of the processing chip U3, the poles BCK of the processing chip U1 pass through resistance R10 and the place The poles the PA5 connection of chip U3 is managed, the poles DOUT of the processing chip U1 are connected by the poles PA7 of the resistance R8 and processing chip U3 It connects, the poles MD1 of the processing chip U1 connect 3.3V power supplys by resistance R4, and the poles MD0 of the processing chip U1 pass through resistance R5 3.3V power supplys are connect, the poles VinL of the processing chip U1 are grounded by capacitance C12, and the poles VinR of the processing chip U1 pass through electricity Hold C13 ground connection.
According to Fig.2, the power module includes power supply chip U2, capacitance CA1 and capacitance CA2, the power supply chip The poles IN1 of U2 connect its pole IN2 and connect 5V power supplys, and the poles OUT1 of the power supply chip U2 are grounded by capacitance CA1 and meet 3.3V The poles IN2 of power supply, the power supply chip U2 are grounded by capacitance CA2.
In conclusion after those skilled in the art read file of the present invention, according to the technique and scheme of the present invention with Technical concept is not necessarily to creative mental labour and makes other various corresponding conversion schemes, belongs to the model that the present invention is protected It encloses.

Claims (7)

1. a kind of usb audio expander, it is characterised in that：Including AUX audio input ends, audio processing modules, power module, open Close handover module, audio output and signal source module, the audio processing modules respectively with the AUX audio input ends, Power module, switching module are connected with signal source module, the power module respectively with the audio processing modules, switch Handover module is connected with signal source module, and the switching module is connect with the audio output, the audio output Including USB interface Andriod-USB, USB interface PORT-USB, USB interface U202-USB and USB interface CD-USB, the sound Frequency processing module controls each USB interface by the switching module；
The switching module includes first switch switching circuit, and the first switch switching circuit includes switching switch USB- SW, resistance R140, triode Q10, resistance R143, triode Q11, resistance R134, resistance R141 and field-effect tube Q9, it is described to cut It changes switch USB-SW to connect with the base stage of the triode Q10 by resistance R140, the collector of the triode Q10 passes through institute It states resistance R143 to connect with the base stage of the triode Q11, the collector of the triode Q11 passes through the resistance R134 and institute The grid connection of field-effect tube Q9 is stated, the drain electrode of the field-effect tube Q9 meets 5V power supplys, the source electrode of the field-effect tube Q9 and institute It states USB interface CD-USB connections and is connect with the resistance R134 by resistance R141 in parallel.
2. a kind of usb audio expander according to claim 1, it is characterised in that：The switching module includes the Two switch switching circuits, the second switch switching circuit include switching switch USB-SW2, resistance R147, triode Q13, electricity Resistance R146, resistance R145, field-effect tube Q12 and capacitance CA5, the switching switch USB-SW2 pass through resistance R147 and described three The base stage of pole pipe Q13 connects, and the emitter ground connection of the triode Q13, the collector of the triode Q13 passes through the resistance R146 is connect with the grid of the field-effect tube Q12, and the drain electrode of the field-effect tube Q12 connects 5V power supplys and connect by capacitance CA5 Ground, the source electrode of the field-effect tube Q12 connect with the USB interface CD-USB and by resistance R145 in parallel and the resistance R146 connections.
3. a kind of usb audio expander according to claim 1, it is characterised in that：The switching module includes opening Close chip U5, the HSD1 of the switch chip U5+Pole is connect with the anode of the USB interface Andriod-USB, the switch core The HSD1 of piece U5-Pole is connect with the cathode of the USB interface Andriod-USB.
4. a kind of usb audio expander according to claim 1, it is characterised in that：The switching module includes opening Close chip U6, the HSD1 of the switch chip U6+Pole is connect with the anode of the USB interface U202-USB, the switch chip The HSD1 of U6-Pole is connect with the cathode of the USB interface U202-USB, the HSD2 of the switch chip U6+Pole connects with the USB The anode connection of mouth PORT-USB, the HSD2 of the switch chip U6-Pole is connect with the cathode of the USB interface PORT-USB.
5. a kind of usb audio expander according to claim 1, it is characterised in that：The signal source module includes processing Chip U4, crystal oscillator Y1, capacitance C9 and capacitance C8, the processing chip U4 the poles XIN/FIN pass through capacitance C9 and capacitance C8 and its The poles XOUT connect, and 1 foot of the crystal oscillator Y1 is connected between the poles XIN/FIN and capacitance C9 of the processing chip U4, the crystal oscillator 2 feet of Y1 are connected between the capacitance C9 and capacitance C8 and are grounded, and 3 feet of the crystal oscillator Y1 are connected on the processing chip U4's Between the poles XOUT and capacitance C8.
6. a kind of usb audio expander according to claim 1, it is characterised in that：The audio processing modules include place Manage chip U1, resistance R4, resistance R5, capacitance C12, capacitance C13, processing chip U3, resistance R6, resistance R7, resistance R9, resistance R8 It is connect with the poles PA4 of the processing chip U3 by resistance R9 with the poles LRCK of resistance R10, the processing chip U1, the place The poles BCK of reason chip U1 are connect by resistance R10 with the poles PA5 of the processing chip U3, the poles DOUT of the processing chip U1 It is connect with the poles PA7 of the processing chip U3 by resistance R8, the poles MD1 of the processing chip U1 connect 3.3V electricity by resistance R4 The poles MD0 in source, the processing chip U1 connect 3.3V power supplys by resistance R5, and the poles VinL of the processing chip U1 pass through capacitance C12 is grounded, and the poles VinR of the processing chip U1 are grounded by capacitance C13.
7. a kind of usb audio expander according to claim 1, it is characterised in that：The power module includes power supply core The poles IN1 of piece U2, capacitance CA1 and capacitance CA2, the power supply chip U2 connect its pole IN2 and connect 5V power supplys, the power supply chip The poles OUT1 of U2 are grounded by capacitance CA1 and connect 3.3V power supplys, and the poles IN2 of the power supply chip U2 are grounded by capacitance CA2.
CN201810264868.0A 2018-03-28 2018-03-28 A kind of usb audio expander Pending CN108519868A (en)

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Application Number Priority Date Filing Date Title
CN201810264868.0A CN108519868A (en) 2018-03-28 2018-03-28 A kind of usb audio expander

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Application Number Priority Date Filing Date Title
CN201810264868.0A CN108519868A (en) 2018-03-28 2018-03-28 A kind of usb audio expander

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203799656U (en) * 2014-01-17 2014-08-27 东莞市科维电子科技有限公司 Vehicle-mounted navigation system having multimedia function
CN204793444U (en) * 2015-06-08 2015-11-18 上海通用汽车有限公司 On -vehicle USB concentrator, on -vehicle infotainment system and car
US20160092391A1 (en) * 2014-09-25 2016-03-31 Hyundai Motor Company Interface apparatus, vehicle having the same, and method of controlling the same
CN105870742A (en) * 2016-03-31 2016-08-17 惠州市德赛西威汽车电子有限公司 USB hub and vehicle-mounted USB multimedia system
US20170111738A1 (en) * 2015-10-16 2017-04-20 Ekko Audio, LLC Audio system having multiple personal wireless audio receivers
CN206489559U (en) * 2016-12-08 2017-09-12 侍家（北京）科技有限公司 A kind of USB interface peripheral circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203799656U (en) * 2014-01-17 2014-08-27 东莞市科维电子科技有限公司 Vehicle-mounted navigation system having multimedia function
US20160092391A1 (en) * 2014-09-25 2016-03-31 Hyundai Motor Company Interface apparatus, vehicle having the same, and method of controlling the same
CN204793444U (en) * 2015-06-08 2015-11-18 上海通用汽车有限公司 On -vehicle USB concentrator, on -vehicle infotainment system and car
US20170111738A1 (en) * 2015-10-16 2017-04-20 Ekko Audio, LLC Audio system having multiple personal wireless audio receivers
CN105870742A (en) * 2016-03-31 2016-08-17 惠州市德赛西威汽车电子有限公司 USB hub and vehicle-mounted USB multimedia system
CN206489559U (en) * 2016-12-08 2017-09-12 侍家（北京）科技有限公司 A kind of USB interface peripheral circuit

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