CN103441393A - Electronic device and multifunctional interface and communication system thereof - Google Patents
Electronic device and multifunctional interface and communication system thereof Download PDFInfo
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- CN103441393A CN103441393A CN2013103733921A CN201310373392A CN103441393A CN 103441393 A CN103441393 A CN 103441393A CN 2013103733921 A CN2013103733921 A CN 2013103733921A CN 201310373392 A CN201310373392 A CN 201310373392A CN 103441393 A CN103441393 A CN 103441393A
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Abstract
The invention discloses an electronic device and a multifunctional interface and a communication system of the electronic device. The multifunctional interface comprises a processing module, a first connecting port and a channel selecting switching module. The first connecting port is connected with a second connecting port of an external device. According to the multifunctional interface of the electronic device, the type of the external device is detected through the processing module, a switching command corresponding to the type of the external device is generated by the processing module, the channel selecting switching module is controlled to select a signal transmission channel matched with the current external device, the processing module outputs data signals required by communication between the electronic device and the external device, and the communication between the electronic device and the connected external device is achieved. Therefore, when the first connecting port is connected with different external devices, different signal transmission channels are selected for communication through the channel selecting switching module, communication modes of the different external devices are switched, therefore, the first connecting port can be compatible with multiple external devices for use, and the communication between the electronic device and the different external devices is achieved.
Description
Technical field
The present invention relates to the interface communication technical field, relate in particular to a kind of electronic equipment and versatile interface thereof, communication system.
Background technology
At present, various electronic equipments are provided with the interface for being connected with external equipment, connect external equipment by this interface, realize the communication of electronic equipment and external equipment, for example, on automobile, be provided with the IPOD interface on video camera, other equipment that can the external IPOD of having interface are realized communication, on automobile, utilize the IPOD interface to connect the IPOD playback equipment, and the audio file that the audio playing module of automobile can read in the IPOD playback equipment is play; On video camera, utilize the IPOD interface to connect the TFT display device, the demonstration data that the TFT display device reads in video camera are shown.At present, normally utilize an external a kind of function device of IPOD interface to realize the specific function of this function device, such IPOD interface can only compatible a kind of function device.If need to realize the function of multifunctional equipment simultaneously, must set up a plurality of IPOD interfaces and carry out connecting multifunctional equipment, yet, the implementation procedure very complex of this scheme, and be subject to the restriction of space and cost, a main equipment is difficult to design a plurality of IPOD interfaces simultaneously, in order to connecting different function devices, realizes different functions.
Summary of the invention
Main purpose of the present invention is to propose a kind of electronic equipment and versatile interface thereof, communication system, is intended to realize that the compatible multiple external equipment in same connectivity port is used, and realizes the communication between electronic equipment and multiple external equipment.
In order to achieve the above object, the present invention proposes a kind of versatile interface of electronic equipment, this versatile interface is for connecting external equipment, comprises processing module and the first connectivity port for being connected with the second connectivity port of external equipment, and this versatile interface also comprises the channel selecting handover module;
The equipment Inspection end of described processing module is connected with the equipment Inspection pin of described the first connectivity port, the data input/output terminal of described processing module is connected with the first data input/output terminal of described channel selecting switching mould, the instruction output end of described processing module is connected with the selection control end of described channel selecting handover module, and the second data input/output terminal of described channel selecting handover module is connected with the transfer of data pin of described the first connectivity port;
When the second connectivity port of described external equipment is connected with described the first connectivity port, described processing module detects the type of described external equipment and generates a switching command corresponding with the type of described external equipment, this switching command is sent to described channel selecting handover module simultaneously, this channel selecting handover module is selected the signal transmission passage mated with current described external equipment according to described switching command, realize described electronic equipment and external equipment communication.
Preferably, described processing module comprises microprocessor, system power supply end and the first resistance;
One end of described the first resistance is connected with described system power supply end, and the other end of described the first resistance is connected with the equipment Inspection pin of described the first connectivity port, and is connected with an IO mouth of described microprocessor.
Preferably, described channel selecting handover module comprises passage switching controls chip; Described passage switching controls chip comprises driver element and signal gating unit;
The selection control pin of described driver element is connected with the data input/output terminal IO mouth of the instruction output end of described microprocessor, described driver element the power supply input pin with described system power supply end, be connected, the grounding leg ground connection of described driver element; Described signal gating unit is connected between the transfer of data pin of the IO mouth of data input/output terminal of described microprocessor and described the first connectivity port.
Preferably, the selection control pin of described driver element comprises the first selection control pin, the second selection control pin, the 3rd selection control pin and the 4th selection control pin; Described channel selecting handover module also comprises the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance;
Described first selects control pin to be connected with the 2nd IO mouth of described microprocessor, and is connected with described system power supply end via described the 3rd resistance; Described second selects control pin to be connected with the 3rd IO mouth of described microprocessor, and is connected with described system power supply end via described the 4th resistance; The described the 3rd selects control pin to be connected with the 4th IO mouth of described microprocessor, and is connected with described system power supply end via described the 5th resistance; The described the 4th selects control pin to be connected with the 5th IO mouth of described microprocessor, and is connected with described system power supply end via described the 6th resistance.
Preferably, the signal gating unit of described passage switching controls chip comprises first signal gating unit, secondary signal gating unit, the 3rd signal gating unit and the 4th signal gating unit;
The data input and output pin of the data input and output pin of described first signal gating unit one end, the data input and output pin of described secondary signal gating unit one end, described the 3rd signal gating unit one end and the data input and output pin of described the 4th signal gating unit one end respectively with corresponding connection of IO mouth of described microprocessor;
The data input and output pin of the described first signal gating unit other end and the data input and output pin of the described secondary signal gating unit other end respectively with corresponding connection of transfer of data pin of described the first connectivity port; And the input data output pin of described the 3rd signal gating unit other end is connected respectively to the data input and output pin of the described first signal gating unit other end and the Nodes of the corresponding connection of transfer of data pin of described the first connectivity port, and the data input and output pin of described the 4th signal gating unit other end is connected respectively to the data input and output pin of the described first signal gating unit other end and the Nodes of the corresponding connection of transfer of data pin of described the first connectivity port.
Preferably, described channel selecting handover module also comprises the decoupling filter capacitor, and an end of described decoupling filter capacitor is connected with described system power supply end, and is connected the other end ground connection of described decoupling filter capacitor with the power supply input pin of described driver element.
The present invention also proposes a kind of electronic equipment, this electronic equipment comprises versatile interface, this versatile interface is for connecting external equipment, comprises processing module and the first connectivity port for being connected with the second connectivity port of external equipment, and this versatile interface also comprises the channel selecting handover module;
The equipment Inspection end of described processing module is connected with the equipment Inspection pin of described the first connectivity port, the data input/output terminal of described processing module is connected with the first data input/output terminal of described channel selecting switching mould, the instruction output end of described processing module is connected with the selection control end of described channel selecting handover module, and the second data input/output terminal of described channel selecting handover module is connected with the transfer of data pin of described the first connectivity port;
When the second connectivity port of described external equipment is connected with described the first connectivity port, described processing module detects the type of described external equipment and generates a switching command corresponding with the type of described external equipment, this switching command is sent to described channel selecting handover module simultaneously, this channel selecting handover module is selected the signal transmission passage mated with current described external equipment according to described switching command, realize described electronic equipment and external equipment communication.
The present invention further also proposes a kind of communication system, and this communication system comprises external equipment and electronic equipment, and described external equipment comprises the second connectivity port, and the versatile interface of described electronic equipment is connected with described the second connectivity port.
Preferably, described external equipment also comprises the second resistance of the type for meaning described external equipment, one end of described the second resistance is connected with the equipment Inspection pin of described the second connectivity port, the other end ground connection of described the second resistance, the equipment Inspection pin of described the second connectivity port is connected with the equipment Inspection pin of the first connectivity port of described versatile interface.
Preferably, described external equipment is TFT display screen, HDMI equipment, SPI communication apparatus, audio frequency and video output equipment, IIC communication apparatus, UART communication apparatus, USB communication apparatus and reserve battery.
The versatile interface that the present invention proposes, when the second connectivity port of external equipment is connected with the first connectivity port, detect the type of external equipment and generate a switching command corresponding with the type of external equipment by processing module, this switching command is sent to the channel selecting handover module simultaneously, the channel selecting handover module is selected the signal transmission passage mated with current external equipment according to this switching command, make processing module can pass through opened signal transmission passage output electronic equipment and the required data-signal of external equipment communication, and by the first connectivity port, data-signal is transferred to external equipment, realize the communication between the external equipment of electronic equipment and access.Versatile interface of the present invention, when the first connectivity port connects different external equipments, by the different signal transmission passage of channel selecting handover module gating, be switched to the communication mode of different external equipments, thereby make can the be compatible multiple external equipment in the first connectivity port use, realize the communication between electronic equipment and different external equipment.
The accompanying drawing explanation
The theory diagram of the versatile interface preferred embodiment that Fig. 1 is electronic equipment of the present invention;
The electrical block diagram of the versatile interface preferred embodiment that Fig. 2 is electronic equipment of the present invention;
The electrical block diagram that the versatile interface that Fig. 3 is electronic equipment in communication system of the present invention is connected with external equipment.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The present invention proposes a kind of versatile interface of electronic equipment.
With reference to Fig. 1, the theory diagram of the versatile interface preferred embodiment that Fig. 1 is electronic equipment of the present invention.
In preferred embodiment of the present invention, the versatile interface 100 of electronic equipment is connected with external equipment 200, and this versatile interface 100 comprises processing module 110, the first connectivity port 120 and channel selecting handover module 130.The first connectivity port 120 is for being connected with the second connectivity port 210 of external equipment 200; The equipment Inspection end of processing module 110 is connected with the equipment Inspection end of the first connectivity port 120, the data input/output terminal of processing module 110 is connected with the first data input/output terminal of channel selecting switching mould 130, the instruction output end of processing module 110 is connected with the selection control end of channel selecting handover module 130, and the second data input/output terminal of channel selecting handover module 130 is connected with the data transmission terminal of the first connectivity port 120.
When the second connectivity port 210 of external equipment 200 is connected with the first connectivity port 120, processing module 110 detects the type of external equipment 200 and generates a switching command corresponding with the type of this external equipment 200, this switching command is sent to channel selecting handover module 130 simultaneously, channel selecting handover module 130 is selected the signal transmission passage mated with current external equipment 200 according to this switching command, realize electronic equipment and external equipment 200 communications.
In the present embodiment, electronic equipment can be realized communication with polytype external equipment 200 by versatile interface 100, this external equipment 200 can be TFT(Thin Film Transistor, Thin Film Transistor (TFT)) display screen, HDMI(High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)) equipment, SPI(Serial Peripheral Interface, Serial Peripheral Interface) communication apparatus, the audio frequency and video output equipment, IIC(Inter-Integrated Circuit, integrated circuit (IC) bus) communication apparatus, UART(Universal Asynchronous Receiver/Transmitter, Universal Asynchronous Receiver & sends) communication apparatus, USB(Universal Serial Bus, USB) any in communication apparatus and reserve battery etc.
In the present embodiment, when the second connectivity port 210 of external equipment 200 is connected with the first connectivity port 120, equipment Inspection end by processing module 110 is detected the type of external equipment 200, the present embodiment is preferably detected by 110 pairs of magnitudes of voltage of processing module, this magnitude of voltage can mean the type of external equipment 200, as a mapping table is one to one arranged between magnitude of voltage and external equipment, a magnitude of voltage means a kind of external equipment.Be understandable that, the present embodiment is not limited to magnitude of voltage is detected, and also can adopt other detection modes to be detected, and this is not restricted.Processing module 110 carries out the magnitude of voltage detected to generate the switching command corresponding with the type of current connected external equipment 200 after analog-to-digital conversion process, and this switching command is exported to the selection control end of channel selecting handover module 130, channel selecting handover module 130 is selected signal transmission passage according to this switching command, make the required data-signal of signal transmission passage transmission electronic equipment that processing module 110 can open by channel selecting handover module 130 and external equipment 200 communications, and by the first connectivity port 120, data-signal is transferred to external equipment 200, realize the communication between the external equipment 200 of electronic equipment and current access.
With respect to prior art, the versatile interface 100 of electronic equipment of the present invention, when the first connectivity port 120 connects different external equipments 200, by the different signal transmission passage of channel selecting handover module 130 gatings, be switched to the communication mode of different external equipment 200, thereby make can the be compatible multiple external equipment 200 in the first connectivity port 120 use, realize the communication between electronic equipment and different external equipment 200.
See figures.1.and.2 in the lump, the electrical block diagram of the versatile interface preferred embodiment that wherein Fig. 2 is electronic equipment of the present invention.
In the present embodiment, processing module 110 comprises microprocessor 111, system power supply end V_SYS and the first resistance R 1, from the supply power voltage of system power supply end V_SYS input, is 3.3V.One end of the first resistance R 1 is connected with system power supply end V_SYS, the other end of the first resistance R 1 is connected with the equipment Inspection pin DET1 of the first connectivity port 120, the one IO mouth IO1 of microprocessor 111, as the equipment Inspection end of processing module 110, is connected with the equipment Inspection pin DET1 of the first connectivity port 120.
In Fig. 2, for the supply power voltage to system power supply end V_SYS input carries out the filtering processing, processing module 110 also comprises capacitor C 0; One end of capacitor C 0 is connected with system power supply end V_SYS via the first resistance R 1, the other end ground connection of capacitor C 0.
In the present embodiment, channel selecting handover module 130 comprises passage switching controls chip 131; Passage switching controls chip 131 comprises driver element 15 and signal gating unit.
The selection control pin of driver element 15 is connected with the IO mouth of the instruction output end of microprocessor 111, and the power supply input pin VCC of driver element 15 is connected with system power supply end V_SYS, the grounding leg GND ground connection of driver element 15; The signal gating unit is connected between the transfer of data pin of the IO mouth of data input/output terminal of microprocessor 111 and the first connectivity port 120.
Particularly, the selection control pin of driver element 15 comprises that the first selection control pin OE1, second selects control pin OE2, the 3rd to select control pin OE3 and the 4th to select control pin OE4; Channel selecting handover module 130 also comprises the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 and the 6th resistance R 6.
Wherein, the 2nd IO mouth IO2 of microprocessor 111, the 3rd IO mouth IO3, the 4th IO mouth IO4 and the 5th IO mouth IO5 are as the instruction output end of processing module 110, and first selects control pin OE1, second to select control pin OE2, the 3rd to select control pin OE3 and the 4th to select the selection control end of control pin OE4 as channel selecting handover module 130; First selects control pin OE1 to be connected with the 2nd IO mouth IO2 of microprocessor 111, and is connected with system power supply end V_SYS via the 3rd resistance R 3; Second selects control pin OE2 to be connected with the 3rd IO mouth IO3 of microprocessor 111, and is connected with system power supply end V_SYS via the 4th resistance R 4; The 3rd selects control pin OE3 to be connected with the 4th IO mouth IO4 of microprocessor 111, and is connected with system power supply end V_SYS via the 5th resistance R 5; The 4th selects control pin OE4 to be connected with the 5th IO mouth IO5 of microprocessor 111, and is connected with system power supply end V_SYS via the 6th resistance R 6.
Particularly, the signal gating unit of passage switching controls chip 131 comprises first signal gating unit 11, secondary signal gating unit 12, the 3rd signal gating unit 13 and the 4th signal gating unit 14.
The data input and output pin of the data input and output pin of the data input and output pin of the data input and output pin of first signal gating unit 11 1 ends (meaning with A end), secondary signal gating unit 12 1 ends (meaning with the A end), the 3rd signal gating unit 13 1 ends (meaning with the A end) and the 4th signal gating unit 14 1 ends (meaning with the A end) respectively with corresponding connection of IO mouth of microprocessor 111; The data input and output pin of the data input and output pin of first signal gating unit 11 other ends (meaning with B end) and secondary signal gating unit 12 other ends (meaning with the B end) respectively with corresponding connection of transfer of data pin of the first connectivity port 120; And the input data output pin of the 3rd signal gating unit 13 other ends (meaning with the B end) is connected respectively to the data input and output pin of first signal gating unit 11 other ends and the Nodes of the corresponding connection of transfer of data pin of the first connectivity port 120, the data input and output pin of the 4th signal gating unit 14 other ends (meaning with the B end) is connected respectively to the data input and output pin of first signal gating unit 11 other ends and the Nodes of the corresponding connection of transfer of data pin of the first connectivity port 120.
The present embodiment only comprises the first selection control pin OE1 with the selection control pin of driver element 15 at this, second selects control pin OE2, the 3rd selects control pin OE3 and the 4th to select control pin OE4, the signal gating unit of passage switching controls chip 131 comprises first signal gating unit 11, secondary signal gating unit 12, the 3rd signal gating unit 13 and the 4th signal gating unit 14 describe for example, type and the quantity of the external equipment 200 that the present embodiment connects as required, select adaptively the quantity of the signal gating unit of the selection control pin of driver element 15 and passage switching controls chip 131.
As shown in Figure 2, microprocessor 111 comprises the data input/output terminal of the 6th IO mouth to the 37 IO mouths (IO6～IO37) as processing module 110.First data transmission pin to the 16 transfer of data pin (DA1～DA16) of the first connectivity port 120 are as the data transmission terminal of the first connectivity port 120.
First signal gating unit 11, secondary signal gating unit 12, the 3rd signal gating unit 13 and the 4th signal gating unit 14 include side a and b, the 1A1 of A end～1A8 pin, 2A1～2A8 pin, 3A1～3A8 pin and 4A8～4A8 pin are as the first data input/output terminal of channel selecting handover module 130, and the 1B1 of B end～1B8 pin, 2B1～2B8 pin, 3B1～3B8 pin and 4B1～4B8 pin are as the second data input/output terminal of channel selecting handover module 130.And 1A1～1A8 pin is as the data input and output pin of the A end of first signal gating unit 11,1B1～1B8 pin is as the data input and output pin of the B end of first signal gating unit 11; 2A1～2A8 pin is as the data input and output pin of the A end of secondary signal gating unit 12, and 2B1～2B8 pin is as the data input and output pin of the B end of secondary signal gating unit 12; 3A1～3A8 pin is as the data input and output pin of the A end of the 3rd signal gating unit 13, and 3B1～3B8 pin is as the data input and output pin of the B end of the 3rd signal gating unit 13; 4A1～4A8 pin is as the data input and output pin of the A end of the 4th signal gating unit 14, and 4B1～4B8 pin is as the data input and output pin of the B end of the 4th signal gating unit 14.
Be understandable that, the number of pins that first signal gating unit 11, secondary signal gating unit 12, the 3rd signal gating unit 13 and the 4th signal gating unit 14 comprise can arrange as required, also relevant according to selected chip, so do not limit the phase number of pins, in like manner the number of pins of the second connectivity port 120 is not done restriction yet.
The 1A1 pin of first signal gating unit 11 is connected with the 6th IO mouth IO6 of microprocessor 111, the 1A2 pin of first signal gating unit 11 is connected with the 7th IO mouth IO7 of microprocessor 111, the 1A3 pin of first signal gating unit 11 is connected with the 8th IO mouth IO8 of microprocessor 111, the 1A4 pin of first signal gating unit 11 is connected with the 9th IO mouth IO9 of microprocessor 111, the 1A5 pin of first signal gating unit 11 is connected with the tenth IO mouth IO10 of microprocessor 111, the 1A6 pin of first signal gating unit 11 is connected with the 11 IO mouth IO11 of microprocessor 111, the 1A7 pin of first signal gating unit 11 is connected with the 12 IO mouth IO12 of microprocessor 111, the 1A8 pin of first signal gating unit 11 is connected with the 13 IO mouth IO13 of microprocessor 111.
The 2A1 pin of secondary signal gating unit 12 is connected with the 14 IO mouth IO14 of microprocessor 111, the 2A2 pin of secondary signal gating unit 12 is connected with the 15 IO mouth IO15 of microprocessor 111, the 2A3 pin of secondary signal gating unit 12 is connected with the 16 IO mouth IO16 of microprocessor 111, the 2A4 pin of secondary signal gating unit 12 is connected with the 17 IO mouth IO17 of microprocessor 111, the 2A5 pin of secondary signal gating unit 12 is connected with the 18 IO mouth IO18 of microprocessor 111, the 2A6 pin of secondary signal gating unit 12 is connected with the 19 IO mouth IO19 of microprocessor 111, the 2A7 pin of secondary signal gating unit 12 is connected with the 20 IO mouth IO20 of microprocessor 111, the 2A8 pin of secondary signal gating unit 12 is connected with the 21 IO mouth IO21 of microprocessor 111.
The 3A1 pin of the 3rd signal gating unit 13 is connected with the 22 IO mouth IO22 of microprocessor 111, the 3A2 pin of the 3rd signal gating unit 13 is connected with the 23 IO mouth IO23 of microprocessor 111, the 3A3 pin of the 3rd signal gating unit 13 is connected with the 24 IO mouth IO24 of microprocessor 111, the 3A4 pin of the 3rd signal gating unit 13 is connected with the 25 IO mouth IO25 of microprocessor 111, the pin 3A5 of the 3rd signal gating unit 13 is connected with the 26 IO mouth IO26 of microprocessor 111, the 3A6 pin of the 3rd signal gating unit 13 is connected with the 27 IO mouth IO27 of microprocessor 111, the 3A7 pin of the 3rd signal gating unit 13 is connected with the 28 IO mouth IO28 of microprocessor 111, the 3A8 pin of the 3rd signal gating unit 13 is connected with the 29 IO mouth IO29 of microprocessor 111.
The 4A1 pin of the 4th signal gating unit 14 is connected with the 30 IO mouth IO30 of microprocessor 111, the 4A2 pin of the 4th signal gating unit 14 is connected with the 31 IO mouth IO31 of microprocessor 111, the 4A3 pin of the 4th signal gating unit 14 is connected with the 32 IO mouth IO32 of microprocessor 111, the 4A4 pin of the 4th signal gating unit 14 is connected with the 33 IO mouth IO33 of microprocessor 111, the 4A5 pin of the 4th signal gating unit 14 is connected with the 34 IO mouth IO34 of microprocessor 111, the 4A6 pin of the 4th signal gating unit 14 is connected with the 35 IO mouth IO35 of microprocessor 111, the 4A7 pin of the 4th signal gating unit 14 is connected with the 36 IO mouth IO36 of microprocessor 111, the 4A8 pin of the 4th signal gating unit 14 is connected with the 37 IO mouth IO37 of microprocessor 111.
The 1B1 pin of first signal gating unit 11, the 3B1 pin of the 3rd signal gating unit 13 all is connected with the first data transmission pin DA1 of the first connectivity port 120, the 1B2 pin of first signal gating unit 11, the 3B2 pin of the 3rd signal gating unit 13 all is connected with the second transfer of data pin DA2 of the first connectivity port 120, the 1B3 pin of first signal gating unit 11, the 3B3 pin of the 3rd signal gating unit 13 all is connected with the 3rd transfer of data pin DA3 of the first connectivity port 120, the 1B4 pin of first signal gating unit 11, the 3B4 pin of the 3rd signal gating unit 13 all is connected with the 4th transfer of data pin DA4 of the first connectivity port 120, the 1B5 pin of first signal gating unit 11, the 3B5 pin of the 3rd signal gating unit 13 all is connected with the 5th transfer of data pin DA5 of the first connectivity port 120, the 1B6 pin of first signal gating unit 11, the 3B6 pin of the 3rd signal gating unit 13 all is connected with the 6th transfer of data pin DA6 of the first connectivity port 120, the 1B7 pin of first signal gating unit 11, the 3B7 pin of the 3rd signal gating unit 13 all is connected with the 7th transfer of data pin DA7 of the first connectivity port 120, the 1B8 pin of first signal gating unit 11, the 3B8 pin of the 3rd signal gating unit 13 all is connected with the 8th transfer of data pin DA8 of the first connectivity port 120.
The 2B1 pin of secondary signal gating unit 12, the 4B1 pin of the 4th signal gating unit 14 all is connected with the 9th transfer of data pin DA9 of the first connectivity port 120, the 2B2 pin of secondary signal gating unit 12, the 4B2 pin of the 4th signal gating unit 14 all is connected with the tenth transfer of data pin DA10 of the first connectivity port 120, the 2B3 pin of secondary signal gating unit 12, the 4B3 pin of the 4th signal gating unit 14 all is connected with the 11 transfer of data pin DA11 of the first connectivity port 120, the 2B4 pin of secondary signal gating unit 12, the 4B4 pin of the 4th signal gating unit 14 all is connected with the 12 transfer of data pin DA12 of the first connectivity port 120, the 2B5 pin of secondary signal gating unit 12, the 4B5 pin of the 4th signal gating unit 14 all is connected with the 13 transfer of data pin DA13 of the first connectivity port 120, the 2B6 pin of secondary signal gating unit 12, the 4B6 pin of the 4th signal gating unit 14 all is connected with the 14 transfer of data pin DA14 of the first connectivity port 120, the 2B7 pin of secondary signal gating unit 12, the 4B7 pin of the 4th signal gating unit 14 all is connected with the 15 transfer of data pin DA15 of the first connectivity port 120, the 2B8 pin of secondary signal gating unit 12, the 4B8 pin of the 4th signal gating unit 14 all is connected with the 16 transfer of data pin DA16 of the first connectivity port 120.
Further, channel selecting handover module 130 also comprises the decoupling filter capacitor, and an end of decoupling filter capacitor is connected with system power supply end V_SYS, and is connected the other end ground connection of decoupling filter capacitor with the power supply input pin VCC of driver element 15.Be noise signal in the voltage of filtering appts feeder ear V_SYS input, increase decoupling filter capacitor between the power supply input pin VCC of driver element 15 and system power supply end V_SYS in passage switching controls chip 131.The present embodiment adopts the parallel connection of a plurality of decoupling filter capacitor, to reach better filter effect, as shown in Figure 2, the first decoupling filter capacitor C1, the second decoupling filter capacitor C2 and the 3rd decoupling filter capacitor C3 parallel connection, and the end after parallel connection is connected with system power supply end V_SYS, and be connected the other end ground connection after parallel connection with the power supply input pin VCC of driver element 15.
The present invention also proposes a kind of electronic equipment, and this electronic equipment comprises versatile interface 100, and the structure of this versatile interface 100, with reference to above-mentioned arbitrary embodiment, repeats no more herein.Because this electronic equipment comprises the versatile interface 100 of the described electronic equipment of above-mentioned arbitrary embodiment, so it has advantages of the versatile interface 100 of the described electronic equipment of above-mentioned arbitrary embodiment, as this electronic equipment can be realized carrying out communication from different external equipment 200.
In one embodiment, electronic equipment of the present invention is video camera, and video camera can be realized communication with multiple external equipment 200 by the first connectivity port 120.In addition, electronic equipment of the present invention is not limited to video camera, can also be that other need to expand the equipment that carries out communication with multiple external equipment 200.
The present invention further also proposes a kind of communication system.
In conjunction with referring to figs. 1 through Fig. 3, the electrical block diagram that the versatile interface that wherein Fig. 3 is electronic equipment in communication system of the present invention is connected with external equipment.
Communication system of the present invention comprises external equipment 200 and electronic equipment, this external equipment 200 comprises the second connectivity port 210, this electronic equipment is the electronic equipment in the above embodiment of the present invention, the versatile interface of this electronic equipment is the versatile interface 100 in above-described embodiment, and the versatile interface 100 of electronic equipment is connected with the second connectivity port 210.
In order to make versatile interface 100 can identify current connected external equipment 200, external equipment 200 also comprises the second resistance R 2, the second resistance R 2 is for meaning the type of external equipment 200, as shown in Figure 3, one end of the second resistance R 2 is connected with the equipment Inspection pin DET2 of the second connectivity port 210, the other end ground connection of the second resistance R 2.While being connected with the first connectivity port 120 in the second connectivity port 210, the equipment Inspection pin DET2 of the second connectivity port 210 is connected with the equipment Inspection pin DET1 of the first connectivity port 120.
In one embodiment, in communication system of the present invention, electronic equipment is video camera, and video camera can be realized communication with multiple external equipment 200 by the first connectivity port 120.In addition, electronic equipment of the present invention is not limited to video camera, can also be that other need to expand the equipment that carries out communication with multiple external equipment 200.Simultaneously, in communication system of the present invention, external equipment 200 be TFT display screen, HDMI equipment, SPI communication apparatus, audio frequency and video output equipment, IIC communication apparatus, UART communication apparatus, USB communication apparatus, reserve battery etc. can with other equipment of electronic equipment communication.
Operation principle when as shown in Figures 2 and 3, versatile interface 100 of the present invention connects external equipment 200 specifically describes as follows:
When the first connectivity port 120 connects external equipment 200, the equipment Inspection pin DET1 of the first connectivity port 120 is connected with the equipment Inspection pin DET2 of the second connectivity port 210, now, system power supply end V_SYS, the first resistance R 1 and the second resistance R 2 form earth-return, be input to an IO mouth IO1 of microprocessor 111, the magnitude of voltage V that now an IO mouth IO1 of microprocessor 111 detects from the 3.3V voltage of system power supply end V_SYS input after the first resistance R 1 and the second resistance R 2 dividing potential drops
dET=3.3V*R
2/ (R
1+ R
2), R wherein
1be the resistance of the first resistance R 1, R
2it is the resistance of the second resistance R 2.Resistance difference due to the second resistance R 2 in different external equipment 200, correspondingly, the voltage difference at the second resistance R 2 two ends, therefore when the first connectivity port 120 connects different external equipments 200, the resistance of the second resistance R 2 changes, the voltage at the second resistance R 2 two ends changes, and the magnitude of voltage that an IO mouth IO1 of microprocessor 111 detects also changes, the magnitude of voltage V that microprocessor 111 detects an IO mouth IO1
dETafter carrying out analog-to-digital conversion process, judge the now type of the external equipment 200 of access, thereby export the selection control pin of corresponding switching command to passage switching controls chip 131, signal transmission passage (the first signal gating unit 11 of external equipment 200 couplings of control channel switching controls chip 131 gatings and the type, secondary signal gating unit 12, the 3rd signal gating unit 13 and/or the 4th signal gating unit 14), after passage switching controls chip 131 gating signal transmission channels, the data-signal of external equipment 200 couplings of microprocessor 111 outputs and the type, and export the first connectivity port 120 to by the signal transmission passage of passage switching controls chip 131, and then the data-signal that will mate with the external equipment 200 of the type transfers to this external equipment 200, now this external equipment 200 can be used the first connectivity port 120 to carry out communication, realize its specific function.
For example, when the first connectivity port 120 connect be the TFT display screen time, now the resistance of the second resistance R 2 is designated as to R
tFT, from the 3.3V voltage of system power supply end V_SYS input, be input to an IO mouth IO1 of microprocessor 111, the magnitude of voltage V that an IO mouth IO1 of microprocessor 111 detects after the first resistance R 1 and the second resistance R 2 dividing potential drops
dET=3.3*R
tFT/ (R
1+ R
tFT), R wherein
1be the resistance of the first resistance R 1, after microprocessor 111 carries out analog-to-digital conversion process by this magnitude of voltage, what judge now access is the TFT display screen.Microprocessor 111 by the 2nd IO mouth IO2 and the 3rd IO mouth IO3 respectively switching command to first of the driver element 15 in passage switching controls chip 131 of output low level select control pin OE1 and second to select control pin OE2, passage switching controls chip 131 is enabled, after passage switching controls chip 131 enables, passage switching controls chip 131 is opened its inner first signal gating unit 11 and secondary signal gating unit 12, as shown in Figure 2, the 1A1 pin of first signal gating unit 11 is communicated with the 1B1 pin, the 1A2 pin of first signal gating unit 11 is communicated with the 1B2 pin, the 1A3 pin of first signal gating unit 11 is communicated with the 1B3 pin, the 1A4 pin of first signal gating unit 11 is communicated with the 1B4 pin, the 1A5 pin of first signal gating unit 11 is communicated with the 1B5 pin, the 1A6 pin of first signal gating unit 11 is communicated with the 1B6 pin, the 1A7 pin of first signal gating unit 11 is communicated with the 1B7 pin, the 1A8 pin of first signal gating unit 11 is communicated with the 1B8 pin, the 2A1 pin of secondary signal gating unit 12 is communicated with the 2B1 pin, the 2A2 pin of secondary signal gating unit 12 is communicated with the 2B2 pin, the 2A3 pin of secondary signal gating unit 12 is communicated with the 2B3 pin.Microprocessor 111 is by its 6th IO mouth to the 16 IO mouth (IO6～IO16) outputs and the corresponding data-signal of TFT display screen, first data transmission pin to the 16 transfer of data pin (DA1～DA16) that first signal gating unit 11 and the secondary signal gating unit 12 of this data-signal by passage switching controls chip 131 exports the first connectivity port 120 to, transfer to the TFT display screen by the second connectivity port 210 again, thereby the first connectivity port 120 is switched to TFT display screen communication mode, and the first connectivity port 120 is as the communication interface of TFT display screen.
When the first connectivity port 120 connect be HDMI equipment the time, now the resistance of the second resistance R 2 is designated as to R
hDMI, from the 3.3V voltage of system power supply end V_SYS input, be input to an IO mouth IO1 of microprocessor 111, the magnitude of voltage V that an IO mouth IO1 of microprocessor 111 detects after the first resistance R 1 and the second resistance R 2 dividing potential drops
dET=3.3*R
hDMI/ (R
1+ R
hDMI), R wherein
1be the resistance of the first resistance R 1, after microprocessor 111 carries out analog-to-digital conversion process by this magnitude of voltage, what judge now access is HDMI equipment.Microprocessor 111 by the 4th IO mouth IO4 and the 5th IO mouth IO5 respectively switching command to the 3rd of the driver element 15 in passage switching controls chip 131 of output low level select control pin OE3 and the 4th to select control pin OE4, passage switching controls chip 131 is enabled, after passage switching controls chip 131 enables, passage switching controls chip 131 is opened the 3rd signal gating unit 13 and the 4th signal gating unit 14 of its inside, as shown in Figure 2, the 3A1 pin of the 3rd signal gating unit 13 is communicated with pin 3B1, the 3A2 pin of the 3rd signal gating unit 13 is communicated with the 3B2 pin, the 3A3 pin of the 3rd signal gating unit 13 is communicated with the 3B3 pin, the 3A4 pin of the 3rd signal gating unit 13 is communicated with the 3B4 pin, the 3A5 pin of the 3rd signal gating unit 13 is communicated with the 3B5 pin, the 3A6 pin of the 3rd signal gating unit 13 is communicated with the 3B6 pin, the 3A7 pin of the 3rd signal gating unit 13 is communicated with the 3B7 pin, the 3A8 pin of the 3rd signal gating unit 13 is communicated with the 3B8 pin, the 4A1 pin of the 4th signal gating unit 14 is communicated with the 4B1 pin, the 4A2 pin of the 4th signal gating unit 14 is communicated with the 4B2 pin, the 4A3 pin of the 4th signal gating unit 14 is communicated with the 4B3 pin.Microprocessor 111 is the data-signal with HDMI equipment by its 22 IO mouth to the 32 IO mouth (IO22～IO32) outputs, be that HDMI equipment carries out the required data-signal of communication, first data transmission pin to the 16 transfer of data pin (DA1～DA16) that three signal gating unit 13 and the four signal gating unit 14 of this data-signal by passage switching controls chip 131 exports the first connectivity port 120 to, transfer to HDMI equipment by the second connectivity port 210 again, in this case, the first connectivity port 120 is switched to HDMI device talk pattern, the first connectivity port 120 is as the communication interface of HDMI equipment.When the first connectivity port 120 connects HDMI equipment, the voltage (as 5V) of inputting from HDMI feeder ear V_HDMI is powered to HDMI equipment by the 4th power delivery pin V4 of the first connectivity port 120, also can give microprocessor 111 power supplies in addition.
In like manner, if what the first connectivity port 120 connected is the SPI communication apparatus, this SPI communication apparatus is for supporting the equipment of SPI communications protocol, what an IO mouth IO1 of microprocessor 111 detected now access is the SPI communication apparatus, control channel switching controls chip 131 is opened secondary signal gating unit 12, the 2A4 pin that is secondary signal gating unit 12 is communicated with the 2B4 pin, the 2A5 pin of secondary signal gating unit 12 is communicated with the 2B5 pin, the 2A6 pin of secondary signal gating unit 12 is communicated with the 2B6 pin, the first connectivity port 120 is switched to SPI communication apparatus communication mode, the first connectivity port 120 is as the communication interface of SPI communication.
If what the first connectivity port 120 connected is the IIC communication apparatus, this IIC communication apparatus is for supporting the equipment of IIC communications protocol, what an IO mouth IO1 of microprocessor 111 detected now access is the IIC communication apparatus, control channel switching controls chip 131 is opened secondary signal gating unit 12, the 2A7 pin that is secondary signal gating unit 12 is communicated with the 2B7 pin, the 2A8 pin of secondary signal gating unit 12 is communicated with the 2B8 pin, the first connectivity port 120 is switched to IIC communication apparatus communication mode, and the first connectivity port 120 is as the communication interface of IIC communication apparatus.
If what the first connectivity port 120 connected is the audio frequency and video output equipments, what an IO mouth IO1 of microprocessor 111 detected now access is the IIC communication apparatus, control channel switching controls chip 131 is opened the 4th signal gating unit 14, the 4A4 pin of the 4th signal gating unit 14 is communicated with the 4B4 pin, the 4A5 pin of the 4th signal gating unit 14 is communicated with the 4B5 pin, the 4A6 pin of the 4th signal gating unit 14 is communicated with the 4B6 pin, the first connectivity port 120 is switched to audio frequency and video output equipment communication mode, the first connectivity port 120 is as the communication interface of audio frequency and video output equipment.
If what the first connectivity port 120 connected is the UART communication apparatus, this UART communication apparatus is for supporting the equipment of UART communications protocol, as GPS(Global Positioning System, global positioning system) positioning equipment, what an IO mouth IO1 of microprocessor 111 detected now access is the UART communication apparatus, control channel switching controls chip 131 is opened the 4th signal gating unit 14, the 4A7 pin of the 4th signal gating unit 14 is communicated with the 4B7 pin, the 4A8 pin of the 4th signal gating unit 14 is communicated with the 4B8 pin, the first connectivity port 120 is switched to UART communication apparatus communication mode, the first connectivity port 120 is as the communication interface of UART communication apparatus.
In addition, in the present invention, the USB communication function also can be expanded in the first connectivity port 120, when the first connectivity port 120 connects the USB communication apparatus, as shown in Figure 2, the first power delivery pin V1 of the first connectivity port 120 and second source transmission pin V2 are connected to the feeder ear of USB communication apparatus, give the USB communication apparatus from the voltage (as 5V) of USB feeder ear V_USB input, the first connectivity port 120 is by negative data signal USB_DM and the positive data signal USB_DP of the 17 transfer of data pin DA17 and the 18 transfer of data pin DA18 transmission USB communication apparatus, now the first connectivity port 120 is as the communication interface of USB communication apparatus.When the first connectivity port 120 connects the USB communication apparatus, from the voltage (as 5V) of USB feeder ear V_USB input, also can give microprocessor 111 power supplies.
In the present invention, the reserve battery function of supplying power also can be expanded in the first connectivity port 120, and the 3rd power delivery pin V3 of the first connectivity port 120 connects reserve battery feeder ear VBAT.Under normal circumstances, pass through the 5th power delivery pin V5 of the first connectivity port 120 to external equipment 200 power supplies from the 3.3V voltage of system power supply end V_SYS input, when system power supply end V_SYS does not power, the voltage provided by reserve battery is to external equipment 200 and microprocessor 111 power supplies.
Below only take external equipment 200 as TFT display screen, HDMI equipment, SPI communication apparatus, IIC communication apparatus, audio frequency and video output equipment or UART communication apparatus, and the first connectivity port 120 expansion USB communication function, reserve battery function of supplying power are that example describes, the first connectivity port 120 of the present invention also can be used as the communication interface of other external equipments 200, and this is not restricted.In addition, the gating mode of passage switching controls chip 131 is not limited to above-described embodiment, can be according to type and the actual demand of connected external equipment 200, the connection situation of the data input and output pin at the A of each signal gating unit, B two ends in self-defined passage switching controls chip 131, to switch to the communication mode mated with connection device, make the compatible multiple external equipment 200 of the first connectivity port 120 functions use.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (10)
1. the versatile interface of an electronic equipment, for connecting external equipment, comprise processing module and the first connectivity port for being connected with the second connectivity port of external equipment, it is characterized in that, also comprises the channel selecting handover module;
The equipment Inspection end of described processing module is connected with the equipment Inspection pin of described the first connectivity port, the data input/output terminal of described processing module is connected with the first data input/output terminal of described channel selecting switching mould, the instruction output end of described processing module is connected with the selection control end of described channel selecting handover module, and the second data input/output terminal of described channel selecting handover module is connected with the transfer of data pin of described the first connectivity port;
When the second connectivity port of described external equipment is connected with described the first connectivity port, described processing module detects the type of described external equipment and generates a switching command corresponding with the type of described external equipment, this switching command is sent to described channel selecting handover module simultaneously, this channel selecting handover module is selected the signal transmission passage mated with current described external equipment according to described switching command, realize described electronic equipment and external equipment communication.
2. versatile interface as claimed in claim 1, is characterized in that, described processing module comprises microprocessor, system power supply end and the first resistance;
One end of described the first resistance is connected with described system power supply end, and the other end of described the first resistance is connected with the equipment Inspection pin of described the first connectivity port, and is connected with an IO mouth of described microprocessor.
3. versatile interface as claimed in claim 2, is characterized in that, described channel selecting handover module comprises passage switching controls chip; Described passage switching controls chip comprises driver element and signal gating unit;
The selection control pin of described driver element is connected with the IO mouth of the instruction output end of described microprocessor, described driver element the power supply input pin with described system power supply end, be connected, the grounding leg ground connection of described driver element; Described signal gating unit is connected between the transfer of data pin of the IO mouth of data input/output terminal of described microprocessor and described the first connectivity port.
4. versatile interface as claimed in claim 3, is characterized in that, the selection control pin of described driver element comprises the first selection control pin, the second selection control pin, the 3rd selection control pin and the 4th selection control pin; Described channel selecting handover module also comprises the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance;
Described first selects control pin to be connected with the 2nd IO mouth of described microprocessor, and is connected with described system power supply end via described the 3rd resistance; Described second selects control pin to be connected with the 3rd IO mouth of described microprocessor, and is connected with described system power supply end via described the 4th resistance; The described the 3rd selects control pin to be connected with the 4th IO mouth of described microprocessor, and is connected with described system power supply end via described the 5th resistance; The described the 4th selects control pin to be connected with the 5th IO mouth of described microprocessor, and is connected with described system power supply end via described the 6th resistance.
5. versatile interface as claimed in claim 4, is characterized in that, the signal gating unit of described passage switching controls chip comprises first signal gating unit, secondary signal gating unit, the 3rd signal gating unit and the 4th signal gating unit;
The data input and output pin of the data input and output pin of described first signal gating unit one end, the data input and output pin of described secondary signal gating unit one end, described the 3rd signal gating unit one end and the data input and output pin of described the 4th signal gating unit one end respectively with corresponding connection of IO mouth of described microprocessor;
The data input and output pin of the described first signal gating unit other end and the data input and output pin of the described secondary signal gating unit other end respectively with corresponding connection of transfer of data pin of described the first connectivity port; And the input data output pin of described the 3rd signal gating unit other end is connected respectively to the data input and output pin of the described first signal gating unit other end and the Nodes of the corresponding connection of transfer of data pin of described the first connectivity port, and the data input and output pin of described the 4th signal gating unit other end is connected respectively to the data input and output pin of the described first signal gating unit other end and the Nodes of the corresponding connection of transfer of data pin of described the first connectivity port.
6. versatile interface as described as claim 4 or 5, it is characterized in that, described channel selecting handover module also comprises the decoupling filter capacitor, one end of described decoupling filter capacitor is connected with described system power supply end, and be connected the other end ground connection of described decoupling filter capacitor with the power supply input pin of described driver element.
7. an electronic equipment, is characterized in that, comprises the described versatile interface of any one in claim 1 to 6.
8. a communication system, is characterized in that, comprises external equipment and electronic equipment claimed in claim 8, and described external equipment comprises the second connectivity port, and the versatile interface of described electronic equipment is connected with described the second connectivity port.
9. communication system as claimed in claim 8, it is characterized in that, described external equipment also comprises the second resistance of the type for meaning described external equipment, one end of described the second resistance is connected with the equipment Inspection pin of described the second connectivity port, the other end ground connection of described the second resistance, the equipment Inspection pin of described the second connectivity port is connected with the equipment Inspection pin of the first connectivity port of described versatile interface.
10. communication system as claimed in claim 9, is characterized in that, described external equipment is TFT display screen, HDMI equipment, SPI communication apparatus, audio frequency and video output equipment, IIC communication apparatus, UART communication apparatus, USB communication apparatus and reserve battery.
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| CN105449402A (en) * | 2014-08-20 | 2016-03-30 | 联想(北京)有限公司 | Connector, method for using same and electronic device equipped with same |
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| CN111147957A (en) * | 2019-12-24 | 2020-05-12 | 金卡智能集团股份有限公司 | Gas meter data acquisition device with universal communication interface |
| CN111147957B (en) * | 2019-12-24 | 2022-02-22 | 金卡智能集团股份有限公司 | Gas meter data acquisition device with universal communication interface |
| CN112952933A (en) * | 2021-02-03 | 2021-06-11 | 广州视源电子科技股份有限公司 | Interface expansion device, electronic device and interface expansion method |
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