CN1425968A - Universal input device for handheld electronic devices and computers - Google Patents

Abstract

A universal input device for hand-held electronic devices and computers includes a main connection port, a transmission communication port, an input control unit, a transmission control unit, and a path selection device. The main connection port is provided with a first connection port and a second connection port for connecting the handheld electronic device, and the transmission communication port is used for connecting a computer. The first serial port of the transmission control unit is connected to the second connection port, and the second serial port is connected to the transmission communication port. The transmission control unit receives a plurality of serial input signals provided by the input control unit, converts the serial input signals into a group of differential signals, transmits the differential signals through the second serial port, and enables the handheld electronic device and the computer to synchronously transmit data according to the synchronous transmission starting signal. The path selection device is used for selecting a first transmission path between the input control unit and the first connection port or a second transmission path between the input control unit and the transmission control unit according to the requirement of a user for the serial input signal.

Description

Be applicable to the universal input device of handheld electronic installation and computing machine

The technology basin

The present invention relates to the universal input device of handheld electronic installation and computing machine, particularly, relate to a kind of portable keyboard, can be connected on handheld electronic installation and the computing machine with the input data, and the function of data sync transmission between handheld charge electronic devices and handheld electronic installation and the computing machine is provided.

Background technology

In the modern society that information alternates fast, in conjunction with the hand held of computing machine, communication, consumer electronics technology or Espresso, personal digital assistant (Personal Digital Assistant, hereinafter to be referred as PDA) etc. handheld electronic installation, because volume is light and handy, be easy to carry about with one, can store personal data advantages such as (such as business card book, p.m.entry, routings), is subjected to consumer's favor widely.Traditionally, the user can be installed in a synchronous transmission base (cradle) 110 and be connected to a desk-top computer 150 or notebook by a transmission cable 120 at office or the family handheld electronic installation 100 with this class of PDA, shown in Figure 1A, make and to carry out the operation of data backup and data synchronization updating between handheld electronic installation 100 and the computing machine 150, and when handheld electronic installation 100 power shortages, connecting one exchange to change the direct current transducer 170 socket (not shown) that plugs in, and charges to draw power supply.On the other hand,, easily handle a large amount of Word messages,, handheld electronic installation 100 can be connected a traditional portable keyboard 130 to reach the purpose with key in data with reference to Figure 1B in order to import data fast again exactly.

The attractive part of handheld electronic installation is its light and handy portable characteristic, yet, technique known but allows the user must be with synchronous transmission base and portable keyboard, can carry out data synchronization updating whenever and wherever possible and handheld electronic installation is charged, also just can use portable keyboard input data, use but the portable keyboard of traditional handheld use for electronic equipment but can't offer general computing machine.So not only reduce the lightness of handheld electronic installation, the annex that the consumer also must buy all above-mentioned handheld use for electronic equipment just has relevant function, and the keyboard of wanting other preparing computer to use, reduce consumer's use wish thus bigly.In view of this, the present invention proposes the universal input device of a kind of handheld electronic installation and computing machine, to overcome the restriction of known technology.

Summary of the invention

An object of the present invention is to provide a kind of universal input device, be applicable to handheld electronic installation and computing machine usefulness as the data input.

Another object of the present invention provides a kind of portable keyboard, can be connected in handheld electronic installation and computing machine with the input data, and with the function of synchronous transmission and charging.

For reaching above-mentioned purpose, the invention provides a kind of universal input device, be applicable to handheld electronic installation and computing machine.Universal input device according to the present invention comprises a main connectivity port, a transport communication port, an Input Control Element, a transmission control unit and a path selection device.Wherein, main connectivity port has first connectivity port and second connectivity port being connected handheld electronic installation, and the transport communication port is used to connect computing machine, and Input Control Element then is used to provide several sequences (serial) input signal.Transmission control unit has that first sequence port is connected in second connectivity port and second sequence port is connected in the transport communication port.Transmission control unit is after receiving above-mentioned sequence input signal, convert thereof into one group of differential wave and transmit by second sequence port, and transmission control unit is according to a synchronous transmission enabling signal, makes to be connected in the handheld electronic installation of second connectivity port and to be connected in via second sequence port between the computing machine of transport communication port via first sequence port to carry out the data sync transmission.Path selection device is used for setting up one first transmission path between the Input Control Element and first connectivity port, or between Input Control Element and transmission control unit, set up one second transmission path, make the calling sequence input signal can be transmitted in first transmission path and second transmission path both one of them.

When path selection device selects to set up first transmission path between first Port of Input Control Element and main connectivity port, several sequence input signals that are transmitted on first transmission path will be transferred to handheld electronic installation by first connectivity port.On the other hand, when path selection device selects to set up second transmission path between Input Control Element and the transmission control unit, transmission control unit receives several sequence input signals that are transmitted on second transmission path, convert sequence signal to, for example meet USB (universal serial bus) (Universal Serial Bus, hereinafter to be referred as USB) the pair of differential signal of specification, this sequence signal is sent to computing machine by the transport communication port.

Universal input device also comprises a lockage button, a power port and a PS/2 connectivity port.After the user presses the lockage button of universal input device, can provide the synchronous transmission enabling signal to operate with the data sync transmission of carrying out between handheld electronic installation and the computing machine to transmission control unit.Power port connects an extraneous power supply, is used for drawing charging current from extraneous power supply and via second Port of main connectivity port handheld electronic installation is charged.The PS/2 connectivity port then is when path selection device is selected to set up second transmission path, and several sequence input signals that are transmitted on second transmission path are transferred to computing machine by this PS/2 connectivity port.

From another kind of viewpoint, the present invention discloses a kind of electronic installation and computer input device of connecting, control interface of this input media tool, and input media of the present invention can be a keyboard, control interface then is a button.According to the present invention, input media comprises a main connectivity port, a transport communication port, an Input Control Element, a transmission control unit and a path selection device.Main connectivity port can connect above-mentioned electronic installation, and main connectivity port comprises one first connectivity port.The transport communication port then can connect the aforementioned calculation machine.Input Control Element can be the Keyboard Control unit, and when the user operates above-mentioned control interface, as when pressing keyboard, Input Control Element can produce user's input signal.Transmission control unit comprises a upstream port that couples (coupled) in the transport communication port, and according to the present invention, transmission control unit is to be preferable with the USB control module.Comprise one first transmission path and one second transmission path on the input media, first transmission path is coupled between the Input Control Element and first connectivity port, and second transmission path is coupled between Input Control Element and the transmission control unit.Path selection device then is used to make above-mentioned user's input signal optionally to be transmitted in one of first transmission path and second transmission path.When path selection device was selected first transmission path, user's input signal utilized first transmission path to be sent to first connectivity port; When path selection device was selected second transmission path, user's input signal utilized second transmission path to be sent to transmission control unit, and then made transmission control unit export corresponding one to transmit signals to the transport communication port.

Also comprise a lockage button according to input media of the present invention, above-mentioned main connectivity port also comprises one second connectivity port, and above-mentioned transmission control unit also comprises a downstream port, and downstream port then is coupled to second connectivity port of main connectivity port.When lockage button was triggered, transmission control unit can stop to export transmission signals, and made upstream port and downstream port can carry out exchanges data, and then made electronic installation and computing machine carry out exchanges data by second connectivity port and transport communication port.

Description of drawings

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail, wherein each accompanying drawing is:

Figure 1A is that handheld electronic installation charges in conjunction with traditional synchronous transmission base, and carries out the synoptic diagram of data sync with computing machine;

Figure 1B is that handheld electronic installation connects the synoptic diagram that traditional portable keyboard is used to import data;

Fig. 2 is a schematic appearance according to the preferred embodiment of the invention;

Fig. 3 A is according to the universal input device embodiment calcspar of the present invention and the first transmission path synoptic diagram;

Fig. 3 B is the second transmission path synoptic diagram of embodiment shown in Fig. 3 A;

Fig. 4 A is according to the calcspar of another embodiment of universal input device of the present invention and the first transmission path synoptic diagram; And

Fig. 4 B is the second transmission path synoptic diagram of embodiment shown in Fig. 4 A.

The explanation of label in the accompanying drawing

100～handheld electronic installation; 110～synchronous transmission base; 120～transmission cable; 130～traditional portable keyboard; 150～computing machine; Direct current transducer is changeed in 170～interchange; 200～universal input device of the present invention (portable keyboard); 210～transport communication port (USB port); 220～main Port; 230 lockage buttons; 240～change-over switch (mechanical type path selection device); 240 '～change-over switch (electronic type path selection device); 260～transmission cable; Direct current transducer is changeed in 270～interchange; 280～power supply port; 310～Input Control Element (Keyboard Control unit); 320～transmission control unit (USB control module); 322～the first sequence ports (downstream port); 324～the second sequence ports (upstream port); 342～the second connectivity ports; 344～the first connectivity ports; 490～PS/2 connectivity port; P1～first transmission path; P2～second transmission path.

Embodiment

The present invention with data input, synchronous transmission and charge function comprehensively in a universal input device, shown in the schematic appearance of Fig. 2 preferred embodiment, according touniversal input device 200 of the present invention, portable keyboard as handheld electronic installation, havemain connectivity port 220 andtransport communication port 210,portable keyboard 200 connects handheld electronic installation 100 bymain connectivity port 220, and is connected to computing machine 150 bytransport communication port 210 and transmission cable 260.Transport communication port 210 is preferable with the USB port of following the USB specification, and thisUSB port 210 is actually a kind of mini USB female seat (female connector) to dwindle the thickness of portable keyboard 200.Transmission cable 260 has the connecting line of USB plug (plug) for two ends, and therefore the plug that connectsportable keyboard 200 these ends is a kind of mini USB plug for cooperatingUSB port 210, and computing machine 150 these ends then are general USB plug.

Portable keyboard 200 comprises lockage button 230, and the user can utilize change-overswitch 240, optionallyportable keyboard 200 is switched and gives handheld electronic installation 100 or computing machine 150 as the usefulness of importing data.When the user wants that handheld signal conditioning package 100 and computing machine 150 carried out data synchronization updating, press lockage button 230, start the data sync transmission operation between handheld electronic installation 100 and the computing machine 150, the professional and technical personnel should understand computing machine 150 and handheld electronic installation 100 must be installed operating system or the driver of supporting the USB device, and handheld electronic installation 100 also must be installed relevant synchronous transmission application program to reach the purpose of carrying out the data sync transmission.

With reference to Fig. 2,portable keyboard 200 is connected to computing machine 150, and during computing machine 150 electric power startings,portable keyboard 200 can draw electric energy with handheld electronic installation 100 chargings from computing machine 150.Otherwise, when ifportable keyboard 200 does not connect computing machine 150, then thepower supply port 280 ofportable keyboard 200 can be via exchange changeing direct current transducer (adapter) the 270 socket (not shown) that plugs in, no matter then whetherportable keyboard 200 is connected on the computing machine 150,portable keyboard 200 all draws electric energy so that handheld electronic installation 100 is charged from supply socket.

Fig. 3 A is according to the embodiments of the invention calcspar.Main connectivity port 220 has (a)second connectivity port 342 andfirst connectivity port 344 to be connected handheld electronic installation 100, is used to be connected computing machine 150 with (b) USB port 210.Input Control Element 310 can be a known Keyboard Control unit (keyboard controller IC), so when the user pushed key in data, Input Control Element 310 can produce several sequence input signals and comprise data-signal KB_DA and data clock signal KB_CLK.Transmission control unit 320 can be the USB control module with usb hub function, has that firstserial port 322 is connected insecond Port 342 and secondserial port 324 is connected inUSB port 210;First sequence port 322 like this is downstream (downstream) port, andsecond sequence port 324 is upstream (upstream) port, anddownstream port 322 can pass receives USB differential wave D₁+, D₁-, upstreamport 324 can pass receives USB differential wave D₂+, D₂-; And the signal wire in thisdownstream port 322, theupstream port 324 includes direct supply Vcc and earthing potential GND.

Transmission control unit 320 converts thereof into a pair of USB differential wave D when receiving data-signal KB_DA and data clock signal KB_CLK₂+, D₂-and byupstream port 324 transmission.Transmission control unit 320 is according to a synchronous transmission enabling signal Sync, makes to be connected in the handheld electronic installation 100 ofsecond connectivity port 342 and to be connected in viaupstream port 324 between the computing machine 150 ofUSB port 210 viadownstream port 322 to carry out the data sync transmission.Wherein, synchronous transmission enabling signal Sync is provided by lockage button 230.

In the present embodiment, change-overswitch 240 itself is mechanical path selection device, it can be selected in the path among the first transmission path P1 and the second transmission path P2, and wherein the first transmission path P1 is between theInput Control Element 310 andfirst Port 344; The second transmission path P2 is betweenInput Control Element 310 andUSB control module 320, make data-signal KB_DA and data clock signal KB_CLK to be sent to first connectivity port for being sent in the handheld electronic installation 100, perhaps select to be sent totransmission control unit 320 for being sent in the computing machine 150 by the second transmission path P2 by the first transmission path P1.

Say that further as shown in Figure 3A, change-overswitch 240 is set in first state with the first transmission path P1 betweenfirst connectivity port 344 of selectingkeyboard control module 310 andmain connectivity port 220, at this moment the A-X of change-overswitch 240₀Between the two ends with B-Y₀Conducting between the two ends and therefore set up the first transmission path P1 makes data-signal KB_DA and data clock signal KB_CLK to be transferred to handheld electronic installation 100 fromKeyboard Control unit 310 by first connectivity port 344.On the other hand, shown in Fig. 3 B, change-overswitch 240 is set in second state to select the second transmission path P2 betweenkeyboard control module 310 and theUSB control module 320, at this moment the A-X of change-overswitch 240₁Between the two ends with B-Y₁Conducting and A-X between the two ends₀Between the two ends with B-Y₀Open circuit between the two ends, therefore set up the second transmission path P2, make data-signal KB_DA and data clock signal KB_CLK to be transferred toUSB control module 320 fromKeyboard Control unit 310,USB control module 320 receives after data-signal KB_DA and the data clock signal KB_CLK, converts thereof into USB differential wave D₂+, D₂-and be sent to computing machine 150 byUSB port 210.

Among another embodiment, path selection device is the electronic type switching device shifter, select signal to select to set up first transmission path or second transmission path according to one, shown in Fig. 4 A,portable keyboard 200 external change-overswitches 240 are set in first state (for example: when the selection signal SEL of generation is logical zero) with the first transmission path P1 betweenfirst connectivity port 344 of selectingkeyboard control module 310 andmain connectivity port 220, this moment electronic type switching device shifter 240 ' A '-X '₀Between the two ends with B '-Y '₀Conducting between the two ends and therefore set up the first transmission path P1 makes data-signal KB_DA and data clock signal KB_CLK to be transferred to handheld electronic installation 100 fromKeyboard Control unit 310 by first connectivity port 344.On the other hand, shown in Fig. 4 B,portable keyboard 200 external change-overswitches 240 are set in second state (for example: when the selection signal SEL of generation is logical one) selecting the second transmission path P2 betweenkeyboard control module 310 and theUSB control module 320, this moment electronic type switching device shifter 240 ' A '-X₀Between ' the two ends with B '-Y₁Conducting and A '-X between ' the two ends₀Between ' the two ends with B '-Y₀Open circuit between ' the two ends, therefore set up the second transmission path P2, make data-signal KB_DA and data clock signal KB_CLK to be transferred toUSB control module 320 fromKeyboard Control unit 310,USB control module 320 receives after data-signal KB_DA and the data clock signal KB_CLK, converts thereof into USB differential wave D₂+, D₂-and be sent to computing machine 150 by USB port 210.Can support only to have the computing machine of PS/2 input interface as keyboard in order to make according to portable keyboard of the present invention, embodiment among Fig. 4 A, the 4B also comprises a PS/2Port 490, when path selection device is set up the second transmission path P2, data-signal KB_DA and the data clock signal KB_CLK that is transmitted on the second transmission path P2 is transferred to computing machine 150 by PS/2connectivity port 490.

As previously described, whenportable keyboard 200 is connected on computing machine 150, as computing machine 150 electric power startings,portable keyboard 200 can draw power supply from computing machine 150 by the power lead Vcc ofupstream port 324, passes through the power lead Vcc ofdownstream port 322 342 pairs of handheld electronic installations 100 chargings in second connectivity port viamain connectivity port 220 again.When if the power port ofportable keyboard 200 280 connects an extraneous power supply,power port 280 draws charging current from extraneous power supply, similarly, charging current is charged via the 342 pairs of handheld electronic installations 100 that are connectedmain connectivity port 220 in above-mentioned second connectivity port.

According toportable keyboard 200 of the present invention, wherein included Keyboard Controlunit 310 has battery saving mode, just enters battery saving mode when a period of time is not used keyboard entry function, to reach the purpose of saving handheld electronic installation 100 power consumptions.Ifportable keyboard 200 is not connected to computing machine 150, the power supply ofUSB control module 320 will be cut off, and isolate the circuit that all are connected withKeyboard Control unit 310, further to save the power consumption of handheld electronic installation 100.Those skilled in the art is when understanding that Keyboard Control unit and USB control module can be comprehensively in same integrated circuit (IC) chip, moreover, those skilled in the art if handheld electronic installation 100 when not supporting the USB transmission interface, also can in the mode of general sequence transmission carry out data sync transmission handheld electronic installation 100 and computing machine 150 between according to portable keyboard of the present invention when recognizing.

In sum, the present invention discloses a kind of portable keyboard, can be connected to handheld electronic installation and computing machine with the input data, and with the function of synchronous transmission and charging.According to portable keyboard of the present invention, can utilize one to switch switch, portable keyboard is switched to handheld electronic installation or the computing machine usefulness as the input data.And when the user wants that handheld electronic installation and computing machine carried out data synchronization updating, can start the data sync transmission operation between handheld electronic installation and the computing machine by next lockage button.In addition, can also be by portable keyboard from connected computing machine or extraneous power supply charges to handheld electronic installation.

Though the present invention discloses in the mode of a specific embodiment, this only is for illustrative purposes openly, and is not the purpose of restriction.For those skilled in the art, under the situation that does not break away from the spirit and scope of the present invention, can make multiple modification and variation, so protection scope of the present invention should be as the criterion according to the scope that the accompanying Claim book is defined.

Claims (24)

1. universal input device that is applicable to handheld electronic installation and computing machine comprises:

A main connectivity port is used for connecting this handheld electronic installation;

A transport communication port is used to connect this computing machine;

An Input Control Element is used to provide a plurality of sequence input signals;

A transmission control unit has a sequence port and is connected in this transport communication port, and this transmission control unit receives these sequence input signals, converts one group of differential wave to and is transmitted by this sequence port; And

A path selection device, be used between this Input Control Element and this main connectivity port, setting up one first transmission path, and between this Input Control Element and this transmission control unit, set up one second transmission path, make these sequence input signals optionally be transmitted in this first transmission path and this second transmission path both one of them.

2. universal input device as claimed in claim 1, wherein above-mentioned input media are keyboards, and above-mentioned Input Control Element is a Keyboard Control unit, and wherein above-mentioned a plurality of sequence input signals are a plurality of keyboard signals.

3. universal input device as claimed in claim 2, wherein above-mentioned transmission control unit are a USB (universal serial bus) (Universal Serial Bus, USB) control module.

4. universal input device as claimed in claim 3, wherein above-mentioned transport communication port are USB port.

5. universal input device as claimed in claim 4, wherein above-mentioned USB control module has the usb hub function, and above-mentioned sequence port is a upstream port, and above-mentioned USB control module also comprises a downstream port.

6. universal input device as claimed in claim 5, wherein above-mentioned main connectivity port comprises one second connectivity port and one first connectivity port, this second connectivity port is coupled to above-mentioned downstream port, and this first connectivity port is coupled to above-mentioned path selection device.

7. universal input device as claimed in claim 6, wherein above-mentioned first connectivity port of above-mentioned main connectivity port is transferred to above-mentioned handheld electronic installation with the above-mentioned a plurality of keyboard signals that are transmitted on above-mentioned first transmission path by above-mentioned first connectivity port when above-mentioned path selection device selects to set up above-mentioned first transmission path between above-mentioned Keyboard Control unit and above-mentioned first connectivity port.

8. universal input device as claimed in claim 6, when wherein above-mentioned USB control module selects to set up above-mentioned second transmission path between above-mentioned Keyboard Control unit and the above-mentioned USB control module at above-mentioned path selection device, reception is transmitted in the above-mentioned a plurality of keyboard signals on above-mentioned second transmission path, converts the pair of differential signal that meets the USB specification to and is sent to the aforementioned calculation machine by above-mentioned USB port.

9. universal input device as claimed in claim 8, wherein above-mentioned USB control module is according to a synchronous transmission start signal, makes to be connected in the above-mentioned handheld electronic installation of above-mentioned second connectivity port and to be connected in via above-mentioned upstream port between the aforementioned calculation machine of above-mentioned USB port via above-mentioned downstream port to carry out the data sync transmission.

10. universal input device as claimed in claim 1, wherein above-mentioned path selection device are a mechanical type switching device shifter.

11. universal input device as claimed in claim 10, wherein above-mentioned mechanical type switching device shifter are set in one first state and set up above-mentioned first transmission path with selection, and are set in one second state to select to set up above-mentioned second transmission path.

12. universal input device as claimed in claim 1, wherein above-mentioned path selection device is an electronic type switching device shifter, this electronic type switching device shifter according to one select signal select to set up above-mentioned first transmission path and above-mentioned second transmission path both one of them.

13. universal input device as claimed in claim 9 comprises that a lockage button is used to provide above-mentioned synchronous transmission enabling signal.

14. universal input device as claimed in claim 2, also comprise a PS/2 connectivity port, be used for when above-mentioned path selection device selects to set up above-mentioned second transmission path, the above-mentioned a plurality of keyboard signals that are sent on above-mentioned second transmission path being transferred to the aforementioned calculation machine by this PS/2 connectivity port.

15. universal input device as claimed in claim 6, wherein charging current can be drawn from the aforementioned calculation machine that is connected in above-mentioned USB port in above-mentioned second connectivity port of above-mentioned main connectivity port, is used for above-mentioned handheld electronic installation is charged.

16. universal input device as claimed in claim 6 comprises that also a power port connects an extraneous power supply, be used for drawing charging current from this external world's power supply, this charging current is charged to above-mentioned handheld electronic installation via above-mentioned second Port of above-mentioned main Port.

17. a portable keyboard that is used to import data can be connected to handheld electronic installation and computing machine, this portable keyboard comprises:

A main connectivity port has one second connectivity port and one first connectivity port, is used for connecting this handheld electronic installation;

USB (universal serial bus) (Universal Serial Bus, USB) port is used to connect this computing machine;

A Keyboard Control unit is used to provide a data-signal and a data clock signal;

A USB control module, has concentrator function, comprise that a downstream port is connected to this second connectivity port and a upstream port is connected to this USB port, this USB control module receives this data-signal and this data clock signal, transmit by this upstream port to be converted to a pair of USB differential wave that meets the USB specification, and, make to be connected to this handheld electronic installation of this second connectivity port and to be connected to and to carry out data sync between this computing machine of this USB port and transmit via this upstream port via this downstream port according to a synchronous transmission enabling signal; And

A path selection device, be used between this Keyboard Control unit and this first connectivity port, setting up one first transmission path, and between this Keyboard Control unit and this USB control module, set up one second transmission path, make this data-signal and this data clock signal can be transmitted in this first transmission path and this second transmission path both one of them.

18. portable keyboard as claimed in claim 17 comprises that a lockage button is used to provide above-mentioned synchronous transmission enabling signal.

19. portable keyboard as claimed in claim 17 also comprises a PS/2 connectivity port, be used for when above-mentioned path selection device selects to set up above-mentioned second transmission path, above-mentioned data-signal and the above-mentioned data clock signal that is transmitted on above-mentioned second transmission path being transferred to the aforementioned calculation machine by this PS/2 connectivity port.

20. portable keyboard as claimed in claim 17, wherein charging current can be drawn from the aforementioned calculation machine that is connected in above-mentioned USB port in above-mentioned second connectivity port of above-mentioned main connectivity port, is used for above-mentioned handheld electronics is charged.

21. one kind can be connected to electronic installation and computer input device, this input media comprises:

A control interface;

A main connectivity port can connect this electronic installation, and this main connectivity port comprises one first connectivity port;

A transport communication port can connect this computing machine;

An Input Control Element, when the user operated this control interface, this Input Control Element can produce user's input signal;

A transmission control unit comprises a upstream port, and this upstream port is coupled to this transport communication port;

One first transmission path is coupled between this Input Control Element and this first connectivity port;

One second transmission path is coupled between this Input Control Element and this transmission control unit; And

A path selection device is used to make this user's input signal optionally to be transmitted in one of this first transmission path and this second transmission path;

When this path selection device was selected this first transmission path, this user's input signal utilized this first transmission path to be sent to this first connectivity port;

When this path selection device was selected this second transmission path, this user's input signal utilized this second transmission path to be sent to this transmission control unit, and then made this transmission control unit export corresponding one to transmit signals to this transport communication port.

22. input media as claimed in claim 21, this input media also comprise a lockage button, this main connectivity port also comprises one second connectivity port, and this transmission control unit also comprises a downstream port, and this downstream port is coupled to this second connectivity port; When this lockage button is triggered, this transmission control unit can stop to export this transmission signals, and make this upstream port and this downstream port can carry out exchanges data, and then make this electronic installation and this computing machine carry out exchanges data by this second connectivity port and this transport communication port.

23. input media as claimed in claim 21, this input media are keyboards, this control interface is a button, and this Input Control Element is a Keyboard Control unit.

24. input media as claimed in claim 21, this transmission control unit are USB control modules.

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