CN106055499A - FM signal and USB transmission switching device - Google Patents
FM signal and USB transmission switching device Download PDFInfo
- Publication number
- CN106055499A CN106055499A CN201610353957.3A CN201610353957A CN106055499A CN 106055499 A CN106055499 A CN 106055499A CN 201610353957 A CN201610353957 A CN 201610353957A CN 106055499 A CN106055499 A CN 106055499A
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- Prior art keywords
- pin
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- switching switch
- switching
- signal
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
-
- 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
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Information Transfer Systems (AREA)
Abstract
Embodiments of the present invention disclose an FM signal and USB transmission switching device for switching an FM signal and USB transmission, and belongs to the technical field of USB interfaces. The FM signal and USB transmission switching device comprises a switching switch, a USB external interface and a USB connector; the switching switch is connected with the USB external interface and the USB connector through circuits; the switching switch comprises a level signal detection module for detecting level signals and a switching switch control module for switching pin connection; and the level signal detection module inputs the detected level signals to the switching switch control module, and the switching switch control module switches connection relations between pins according to the received level signals. Switching between the FM signal and the USB transmission can be achieved by the switching device.
Description
Technical field
The present embodiments relate to USB interface technical field, particularly relate to the switching dress of a kind of FM signal and USB transmission
Put.
Background technology
For supporting the equipment (such as mobile phone) of FM frequency modulation function, it will usually use the left and right acoustic channels of earphone to receive as FM
Antenna.The voice-frequency channel the most just requiring switch can meet the bandwidth (3db band is wider than 200MHz) of FM.Owing to propping up by USB port
Holding the new trend that ear-phone function is market, related chip research and development can't fully meet needs, so energy on current chip market
The voice-frequency channel of the switch chip found all designs (typically smaller than 20kHz) according to audio bandwidth, so not being suitable for FM.
By the research to prior art, inventor finds that in prior art, at least there are the following problems: the most mobile whole
The new trend that end product (such as mobile phone) designs is to cancel traditional 3.5mm earphone, only uses USB port to connect earphone, works as needs
When supporting FM signal, existing switching device is difficult to meet this demand simultaneously.
Summary of the invention
The problem that can not meet the switching of FM signal in order to solve the switching device of USB interface in prior art, the present invention is real
The switching device executing a kind of FM signal described in example and USB transmission have employed following technical scheme.
A kind of switching device of FM signal and USB transmission, described switching device include switching switch, USB external interface and
USB connector；
Described switching switch is connected with USB external interface and USB connector by circuit；Described switching switch include for
The level signal detection module of detection level signal with for switching the switching switch control module connected between pin；Described level
Signal detection module inputs the described level signal detected, described switching on-off control mould to described switching switch control module
The described level signal that tuber evidence receives is to switch the connected relation between described pin.
Further, described level signal detection module is connected with CPU, and described level signal detection module is according to described CPU
Instruction input, to described switching switch control module, the described level signal that detects.
Further, described switching switch control module includes S pin, D1+ pin, D2+ pin, L pin, GND pin, R
Pin, D2-pin, D1-pin,Pin and VCC pin；
Wherein, VCC pin is used for accessing power supply, and GND pin is used for ground connection.
Further, when described switching switchs tangential D2+ pin and D2-pin, D1+ pin connects with D2+ pin, D1-
Pin connects with D2-pin；
When described switching switchs tangential L pin and R pin, D1+ pin connects with L pin, and D1-pin is with R pin even
Logical.
Further, the D2+ pin of described switching switch connects with USB external interface with D2-pin, is used for carrying out data biography
Defeated；
L pin and the R pin of switching switch are used for receiving FM signal.
Further,When pin is in high level, do not connect between each pin；
When pin is in low level, S pin accesses low level, and D1+ pin connects with D2+ pin, D1-pin and D2-
Pin connects；
When pin is in low level, S pin accesses high level, and D1+ pin connects with L pin, D1-pin and R pin
Connection.
Further, when D1+ pin connects with D2+ pin, and D1-pin connects with D2-pin, carried out by switching switch
USB data transmission and/or charge the phone；
When D1+ pin connects with L pin, and D1-pin connects with R pin, carry out FM signal input by switching switch
And/or audio signal input and output.
Further, comprising USB external circuit, described USB connector comprises USB and connects circuit.
Further, USB output and/or audio signal flow to on-off circuit, then through USB external electrical from USB connection circuit
Road (201) exports；
USB accesses and/or FM signal and/or plant-grid connection and/or audio signal are from USB external circuit (201) inlet flow
To on-off circuit, then connect circuit input through USB.
Compared with prior art, the embodiment of the present invention has the advantage that the level that described switching device is switched by switching
Signal detection module detection level signal, by the connection between the switching switch control module switching pin that switching switchs, passes through
The level signal detection module of switching switch inputs the level signal detected to described switching switch control module, by switching
The connected relation that the switching switch control module of switch switches between pin according to the described level signal received.Therefore, this
Plant switching device and can realize the switching between FM signal and USB transmission.
Accompanying drawing explanation
Fig. 1 is the application schematic diagram of switching device described in the embodiment of the present invention.
Fig. 2 is that switching device FM signal described in the embodiment of the present invention accesses switching schematic diagram with USB.
Fig. 3 is the Switch structure schematic diagram of switching device described in the embodiment of the present invention.
Fig. 4 is that switching device FM signal described in the embodiment of the present invention accesses, audio signal exports and USB accesses output
Schematic diagram.
Fig. 5 is the switching switch control module schematic diagram of switching device described in the embodiment of the present invention.
Fig. 6 is that the switching switch control module of switching device described in the embodiment of the present invention controls schematic diagram.
Fig. 7 be switching device FM signal access described in the embodiment of the present invention, plant-grid connection, audio signal input and output and
USB accesses the schematic diagram of output.
Description of reference numerals: 1 terminal unit, 100 switching switches, 101 on-off circuits, 102 level signal inspections
Survey module, 103 switching switch control modules, 200 USB external interfaces, 201 USB external circuits, 300 USB connections
Device, 301 USB connect circuit.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can realize in many different forms, however it is not limited to institute herein
The embodiment described.On the contrary, providing the purpose of these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field belonging to the present invention
The implication that technical staff is generally understood that is identical.The term used the most in the description of the invention is intended merely to describe tool
The purpose of the embodiment of body, it is not intended that in limiting the present invention.
A kind of FM signal described in the embodiment of the present invention can be applicable to the terminal units such as mobile phone with the switching device of USB transmission
In, FM signal refers to the signal that radio broadcasting uses, and USB transmission refers to by USB interface transmission data and audio signal.
With reference to Fig. 1, described switching device includes switching switch 100, USB external interface 200 and USB connector 300.Described switching switch
100 are connected with USB external interface 200 and USB connector 300 by circuit.
With reference to Fig. 1, described USB external interface 200 can be used for accessing earphone.FM signal can be realized by switching switch 100
With the switching of USB transmission, i.e. when using mobile phone 1 to listen to radio broadcasting, switching switch 100 is switched to FM signal and receives, when making
When carrying out data transmission with mobile phone 1, switching switch 100 is switched to USB transmission.
With reference to Fig. 2, the D1+ pin of switching switch 100 connects with USB connector 300 with D1-pin, D1+ pin and D1-
Pin is the general pin of switching switch 100.The D2+ pin of switching switch 100 and D2-pin are with USB external interface 200 even
Logical, it is used for carrying out data transmission.L pin and the R pin of switching switch 100 are used for receiving FM signal, are also the defeated of audio frequency simultaneously
Go out pin.When switching tangential D2+ pin and D2-pin, D1+ pin connects with D2+ pin, and D1-pin connects with D2-pin.
When switching tangential L pin and R pin, D1+ pin connects with L pin, and D1-pin connects with R pin.Manage with D2+ at D1+ pin
In the case of foot connection and D1-pin connect with D2-pin, can be carried out data transmission by USB.D1+ pin is with L pin even
Pass to and in the case of D1-pin connects with R pin, FM signal transmission and audio transmission can be carried out by USB.
With reference to Fig. 3, switching switch 100 includes the level signal detection module 102 for detecting level signal and for cutting
Change the switching switch control module 103 that pin connects.Described level signal detection module 102 and switching switch control module 103
It is connected.Described level signal detection module 102 connects with CPU, according to the instruction of CPU, inputs to switching switch control module 103
Level signal.Switching switch control module 103 is according to the connected relation between the level signal switching pin obtained.
With reference to Fig. 4, with the internal circuit of on-off circuit 101 signal switching switch 100, illustrate with USB external circuit 201
The internal circuit of USB external interface 200, connects circuit 301 with USB and illustrates the internal circuit of USB connector 300.Then USB output
(data output) and/or audio signal connect circuit 301 from USB and flow to on-off circuit 101, then defeated through USB external circuit 201
Go out.USB accesses and/or FM signal flows to on-off circuit 101 from USB external circuit 201 input, then connects circuit 301 through USB
Input.
With reference to Fig. 5, switching switch control module 103 is one piece of integrated circuit, including S pin, D1+ pin, D2+ pin, L
Pin, GND pin, R pin, D2-pin, D1-pin,Pin and VCC pin.Wherein, VCC pin switches on power,
Pin and GND pin are with reference to ground connection.
Form 01
Reference table 01, the function of each pin is:Pin is output Enable Pin, and S pin is selection input pin,
D1+ pin, D2+ pin, L pin, R pin, D2-pin and D1-pin are data pins, and VCC pin is used for accessing power supply,
GND pin is used for ground connection.
With reference to Fig. 6, pass throughPin and S pin input and determine level signal.Pin ground connection is in low level,
Otherwise it is in high level.When level signal detection module 102 detectsPin is in low level, and according to the instruction of CPU, S manages
Foot receives high level or low level.
Form 02
Form 02 isThe true value schematic diagram of pin and S pin, H represents that high level, L represent low level.WhenPin
When being in high level, do not connect between each pin.WhenWhen pin is in low level, if S pin accesses low level, then
D1+ pin connects with D2+ pin, and D1-pin connects with D2-pin.WhenWhen pin is in low level, if S pin accesses
High level, then D1+ pin connects with L pin, and D1-pin connects with R pin.
With reference to Fig. 7, switching switch 100 described in the present embodiment according to CPU control signal, USB output (data output) and/or
Audio signal connects circuit 301 from USB and flows to on-off circuit 101, then exports through USB external circuit 201.USB access and/or
FM signal and/or plant-grid connection and/or audio signal flow to on-off circuit 101, then through USB from USB external circuit 201 input
Connect circuit 301 to input.
With reference to Fig. 6, pass throughPin and S pin input and determine level signal.Pin ground connection is in low level,
Otherwise it is in high level.When level signal detection module 102 detectsPin is in low level, and according to the instruction of CPU, S manages
Foot receives high level or low level.WhenWhen pin is in low level, if S pin access low level, then D1+ pin with
D2+ pin connect, D1-pin connect with D2-pin, now by switch switch 100 can carry out USB data transmission and/or
Charge the phone.WhenWhen pin is in low level, if S pin accesses high level, then D1+ pin connects with L pin, D1-
Pin connects with R pin, can carry out FM signal input and/or audio signal input and output now by switching switch 100.
The embodiment of the present invention mainly has a following beneficial effect:
Switching device described in the embodiment of the present invention is by switching switch 100 according to CPU control signal, and (data are defeated in USB output
Go out) and/or audio signal from USB connect circuit 301 flow to on-off circuit 101, then export through USB external circuit 201.USB
Access and/or FM signal and/or plant-grid connection and/or audio signal flow to on-off circuit 101 from USB external circuit 201 input,
Then connect circuit 301 through USB to input.Make the switching that this switching device is capable of between FM signal USB transmission.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (9)
1. the switching device of a FM signal and USB transmission, it is characterised in that: described switching device include switching switch (100),
USB external interface (200) and USB connector (300)；
Described switching switch (100) is connected with USB external interface (200) and USB connector (300) by circuit；Described switching
Switch (100) include for the level signal detection module (102) detecting level signal with for switching cutting of connecting between pin
Change switch control module (103)；Described level signal detection module (102) inputs to described switching switch control module (103)
The described level signal detected, described switching switch control module (103) switches according to the described level signal received
Connected relation between described pin.
Switching device the most according to claim 1, it is characterised in that: described level signal detection module (102) is with CPU even
Connecing, described level signal detection module (102) inputs to described switching switch control module (103) according to the instruction of described CPU
The described level signal detected.
Switching device the most according to claim 1 and 2, it is characterised in that: described switching switch control module (103) includes
S pin, D1+ pin, D2+ pin, L pin, GND pin, R pin, D2-pin, D1-pin,Pin and VCC pin；
Wherein, VCC pin is used for accessing power supply, and GND pin is used for ground connection.
Switching device the most according to claim 3, it is characterised in that: when described tangential D2+ pin of switching switch (100) and
During D2-pin, D1+ pin connects with D2+ pin, and D1-pin connects with D2-pin；
When the tangential L pin of described switching switch (100) and R pin, D1+ pin connects with L pin, and D1-pin is with R pin even
Logical.
Switching device the most according to claim 3, it is characterised in that: the D2+ pin of described switching switch (100) and D2-
Pin connects with USB external interface (200), is used for carrying out data transmission；
L pin and the R pin of switching switch (100) are used for receiving FM signal.
Switching device the most according to claim 3, it is characterised in that:When pin is in high level, between each pin
Do not connect；
When pin is in low level, S pin accesses low level, and D1+ pin connects with D2+ pin, D1-pin and D2-pin
Connection；
When pin is in low level, S pin accesses high level, and D1+ pin connects with L pin, and D1-pin is with R pin even
Logical.
Switching device the most according to claim 6, it is characterised in that: when D1+ pin connects with D2+ pin, D1-pin with
During the connection of D2-pin, carry out USB data transmission by switching switch (100) and/or charge the phone；
When D1+ pin connects with L pin, and D1-pin connects with R pin, carry out FM signal input by switching switch (100)
And/or audio signal input and output.
Switching device the most according to claim 1, it is characterised in that: described switching switch (100) comprises on-off circuit
(101), described USB external interface (200) comprises USB external circuit (201), and described USB connector (300) comprises USB and connects
Circuit (301).
Switching device the most according to claim 8, it is characterised in that: USB output and/or audio signal connect electricity from USB
Road (301) flows to on-off circuit (101), then exports through USB external circuit (201)；
USB accesses and/or FM signal and/or plant-grid connection and/or audio signal are opened from USB external circuit (201) the input flow direction
Close circuit (101), then connect circuit (301) input through USB.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610353957.3A CN106055499A (en) | 2016-05-25 | 2016-05-25 | FM signal and USB transmission switching device |
| PCT/CN2016/101645 WO2017201945A1 (en) | 2016-05-25 | 2016-10-10 | Device for switching between fm signal and usb transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610353957.3A CN106055499A (en) | 2016-05-25 | 2016-05-25 | FM signal and USB transmission switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106055499A true CN106055499A (en) | 2016-10-26 |
Family
ID=57175172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610353957.3A Pending CN106055499A (en) | 2016-05-25 | 2016-05-25 | FM signal and USB transmission switching device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106055499A (en) |
| WO (1) | WO2017201945A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113949755B (en) * | 2020-07-17 | 2023-01-31 | 荣耀终端有限公司 | Electronic equipment and wired earphone |
| CN113535622A (en) * | 2021-06-04 | 2021-10-22 | 浙江大华技术股份有限公司 | Power supply switching system, USB socket and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090102426A1 (en) * | 2007-10-23 | 2009-04-23 | Inventec Corporation | Charging system and method for electronic device |
| CN201359725Y (en) * | 2009-01-21 | 2009-12-09 | 青岛海信移动通信技术股份有限公司 | USB interface circuit and portable hand-held device provided with the circuit |
| CN101931674A (en) * | 2010-09-01 | 2010-12-29 | 惠州Tcl移动通信有限公司 | Method and device for sharing Micro-USB interface |
| CN103561369A (en) * | 2013-10-31 | 2014-02-05 | 惠州Tcl移动通信有限公司 | Usb interface circuit and electronic equipment |
-
2016
- 2016-05-25 CN CN201610353957.3A patent/CN106055499A/en active Pending
- 2016-10-10 WO PCT/CN2016/101645 patent/WO2017201945A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090102426A1 (en) * | 2007-10-23 | 2009-04-23 | Inventec Corporation | Charging system and method for electronic device |
| CN201359725Y (en) * | 2009-01-21 | 2009-12-09 | 青岛海信移动通信技术股份有限公司 | USB interface circuit and portable hand-held device provided with the circuit |
| CN101931674A (en) * | 2010-09-01 | 2010-12-29 | 惠州Tcl移动通信有限公司 | Method and device for sharing Micro-USB interface |
| CN103561369A (en) * | 2013-10-31 | 2014-02-05 | 惠州Tcl移动通信有限公司 | Usb interface circuit and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017201945A1 (en) | 2017-11-30 |
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