CN101685934A - Pluggable adapter and portable system - Google Patents

Abstract

A pluggable adapter is pluggably connected to a data bus of a connection socket of a portable device to form a portable system. The system has a switching circuit and can inform the portable device whether there is power and the connection status of the adapter through the data bus. Through the multiple connection sockets of the adapter, the portable device can simultaneously connect to a power source from one connection socket of the adapter to receive power or charge, and connect to at least one user device from other connection sockets of the adapter for use.

Description

Pluggable adapters and portable systems

technical field

The present invention relates to a portable device and an adapter and method for connecting adapters and peripheral devices, and in particular to a device capable of simultaneously distributing power and connecting a user device via a data bus Method, portable device and pluggable adapter thereof.

Background technique

At present, the design of portable devices by the industry is developing in the direction of lighter, smaller, thinner and miniaturized, so as to meet the needs of users for appearance and portability. For the interface interface required when the portable device is connected with other external devices, the design is simplified. The existing practice is to design a single interface on the portable device, that is, the connection socket, to take care of various external devices. need. For example, mobile phones, digital cameras, or digital personal assistants mostly only provide a receptacle that conforms to a single interface specification, while AC adapters (AC adapters), other electronic devices or computer hosts can be connected through a receptacle that conforms to the same interface specification. The connector of the line engages with this connection socket. Among them, the connection socket can adopt a common standard, such as a connection socket conforming to the universal serial bus (USB) standard, so as to facilitate implementation and achieve the purpose of simplifying the design of the connection socket.

However, using common standards also has disadvantages. For example, under the USB standard, when a portable device is used as a host (host) to connect and exchange data with its user device (client device), the portable device as a host must provide power to the user device for its In this case, even if the external charger (AC adapter) can provide power, it still cannot be connected to the portable device at the same time as the user device to supply power to the portable device. Conversely, when the portable device is connected to an external charger, it cannot be connected with the user device and transmit data to each other at the same time. In this way, the usage of the portable device is limited, and the portable device and the external power supply are not fully utilized, causing inconvenience to the user.

Contents of the invention

The invention relates to a portable device. The portable device can be connected to a power supply through a data bus of a connection base for power distribution and a pluggable adapter and a method for simultaneously connecting a user device. The embodiment of the present invention proposes a pluggable converter, the converter is pluggably connected to a data bus of a socket of a portable device, and can notify the portable device through the data bus whether there is The connection status of the external power supply and the converter, the portable device can be connected to a power supply from one connector of the converter for power distribution through multiple connectors of the converter at the same time, and connected to other connectors of the converter At least one user device. According to this, on the one hand, the portable device can use the power supply to charge its battery and connect to and exchange data with the user device at the same time; on the other hand, the power supply can also supply power to the user device at the same time.

According to the first aspect of the present invention, a pluggable adapter is proposed, so that the portable device can be simultaneously connected to a power source for power distribution and simultaneously connected to a user device through a data bus of a connection socket. The adapter includes: a first connecting seat, a second connecting seat, a connecting head and a switching circuit. The first connection socket is pluggably coupled to a first data bus of a first electronic device. The second connection socket is pluggably coupled to a second data bus of a second electronic device. The connector is pluggably coupled to the host data bus of the connection socket of the portable device, so as to provide a set of host bus signals on the host data bus of the portable device, wherein the set of host bus signals includes A data signal, a connection status signal and a power signal. The first connection seat is coupled to the connector so that at least one data signal line and a power signal line of the first data bus of the first electronic device are coupled with at least one data signal line and a power signal line of the host bus. The switching circuit is coupled to the second data bus of the second connection socket; wherein, the switching circuit judges whether the second electronic device is connected to the second connection socket according to the signal obtained by the second data bus, and provides a connection from the connection head The status signal enables the portable device to know the connection status of the adapter. If the switching circuit determines that the second electronic device is connected to the second connection socket, the switching circuit will output a power signal obtained from the second bus to the connector as the power signal of the host bus signal, and output it to the first connection socket as a power signal of the first data bus.

According to a second aspect of the present invention, a portable system is proposed, including: a portable device and an adapter. The portable device includes: a bus controller, a connection socket, a connection state detection circuit and a microprocessor. The bus controller provides and controls a host data bus. The connection socket is used for externally coupling the interface of the host data bus. The connection state detection circuit is coupled with the connection socket, and is used for judging the state of the host data bus and the external connection, and generating an event signal. The microprocessor is used to control the portable device, wherein the microprocessor responds to the event signal to perform power control. As mentioned above, the adapter is used to pluggably connect the host data bus of the connection socket of the portable device. The adapter includes: a first connection socket, a second connection socket, a connector and a switch Connect the circuit. If the switch circuit judges that a power supply device is connected to the second connection socket, the switch circuit will output a power signal obtained from the second bus to the connector as the power signal of the host bus signal, and output it to the first connection socket for Serves as a power signal for the first data bus. The connection status detection circuit of the portable device receives the connection status signal to generate the event signal. If the connection status signal is a first connection status, it means that when the adapter is connected to the portable device and a power supply device, the portable According to the event signal, the micro-processing of the portable device determines that the portable device is powered or charged by the power signal of the host bus signal.

In order to make the above-mentioned content of the present invention more obvious and understandable, a preferred embodiment is specially cited below, together with the accompanying drawings, and described in detail as follows:

Description of drawings

FIG. 1 shows a schematic block diagram of a portable system according to an embodiment of the present invention, wherein the portable device and the pluggable converter are used.

FIG. 2 illustrates an embodiment of a pluggable converter according to the present invention.

FIG. 3 illustrates an embodiment of a power detection circuit of a pluggable converter according to the present invention.

FIG. 4 illustrates an embodiment of a portable device according to the present invention.

FIG. 5 illustrates an embodiment of a connection state detection circuit of a portable device according to the present invention.

FIG. 6 is a flowchart illustrating an embodiment of how to adjust power control in a second state of a portable device according to the present invention.

FIG. 7 is a flowchart illustrating an embodiment of how to adjust power control in a third state of a portable device according to the present invention.

[Description of main component symbols]

10: Portable system

20: User device

22: connector

30: Power Adapter

32: connector

100, 400: portable device

110, 410: connecting seat

120, 220: pluggable adapter

140, 240: connector

150, 250: transfer circuit

160, 260: the first connecting seat

180, 280: the second connecting seat

251, 300: power detection circuit

253: Power control circuit

255: Connection status signal

257: Power signal

261: data signal group of the first data bus

263: Power signal of the first data bus

281: second data bus

310: switch control circuit

311: switch control signal

320: switch circuit

321: Analog switch

323, 325, 555: resistance

420: bus controller

430: Microprocessor

440: Bus Power Controller

450, 550: connection state detection circuit

455: Event signal

560: voltage detection unit

561, 563, 565: voltage detectors

Detailed ways

Please refer to FIG. 1 , which is a schematic diagram of a portable system 10 according to the embodiment of the present invention. The portable system 10 includes a portable device 100 and a pluggable adapter 120 . The portable device 100 has an electronic device with an embedded system, such as a mobile phone, a personal digital assistant, a multimedia player, an electronic dictionary, and generally uses a battery as a power source, and even has a built-in charger, which can accept external When powered, selectively recharges its battery. The portable device 100 can be connected with a first electronic device or a second electronic device by using the host data bus of the connection socket 110 at least conforming to certain electrical or data bus specifications, such as the universal serial bus, to communicate with each other. The data is either powered or charged from the power supply device. The first electronic device is such as the external user device 20 shown in FIG. 1 , and the second electronic device is such as a power supply device such as the power adapter 30 shown in FIG. 1 . However, the portable device 100 cannot simultaneously connect the user device 20 and the power adapter 30 through the connection base 110 to transmit data and receive power simultaneously.

When it is necessary to use an external user device and obtain power from a power supply device or charge the portable device 100 at the same time, the user can connect the connection base 110 of the portable device 100 to the adapter 120 by plugging and unplugging. The connection head 140. In this way, through the adapter 120, the user device 20 and the power adapter 30 can be respectively connected to the first connection socket 160 and the second connection socket 180 of the adapter 120, so as to be coupled with the portable device 100 at the same time . Furthermore, the adapter 120 includes a switching circuit 150 to detect whether the user device coupled to the data bus at the second connection socket 180 is a power supply device. If so, the adapter 120 combines the data signal from the connector 22 of the user device 20 and the power signal from the connector 32 of the power adapter 30 to provide a set of data bus signals (not shown) through the connector 140 ) on the host data bus, which includes a connection status signal (not shown) to indicate the connection status of the adapter 120 in various states. Thus, the portable device 100 can know the current connection status of the adapter 120 according to the connection status signal. If the connection status indicates that the adapter 120 has been connected to a power supply device, the portable device 100 can automatically Decide whether to receive power or charge from the outside. On the other hand, the portable device 100 can use the data bus and various functions of the user device 20 at the same time. Furthermore, the power supply of the power supply device can supply power to the user device 20 at the same time, so that when the user operates the portable device 100, the power provided by its own battery can only be used by the portable device 100, The power supply required to drive the user device 20 can be provided by the power supply device, and when the power supply of the battery itself of the portable device 100 is insufficient or needs to be charged, the power supply device can also perform the power supply on the portable device 100 in a timely manner. Charge. In other words, the portable device 100 can simultaneously distribute power and operate the user device 20 via a data bus.

The above-mentioned adapter 120 can be implemented on a cradle or a docking station suitable for the portable device 100 or embedded in a cable.

For the above-mentioned embodiment of the portable system 10 , other embodiments of the portable device 100 and the adapter 120 are proposed below for illustration.

Please refer to an embodiment of the adapter 220 according to the present invention shown in FIG. 2 . The adapter 220 includes a connector 240 , a first connection base 260 , a second connection base 280 and an adapter circuit 250 . The connector 240 is pluggably coupled to the host data bus of the socket 110 of the portable device 100 to provide a set of host bus signals on the host data bus of the portable device 100, wherein the set of host The bus signal includes at least a data signal, a connection status signal and a power signal. The first connection socket 260 is pluggably coupled to a first data bus of a user device. The second connection socket 280 is pluggably coupled to a second data bus of a power supply device. At least one signal line of the first data bus of the first connection socket 260 , such as the data signal group 261 , is coupled to the host bus of the connector to serve as a data signal of the host bus signal. In order to facilitate the description of the implementation method, the following will use the Universal Serial Bus (USB) and its extended standards (such as USB On-the-Go, referred to as USBOTG) as an example to implement and illustrate. The host data bus of the connecting seat 110 is A USB, on which the transmitted signals include: a data signal group 261 , such as the D+ and D- signals defined by USB; a power signal 263 , such as the V_BUS signal defined by USB; and a connection status signal 255 .

Furthermore, the switching circuit 250 is coupled to the second data bus 281 of the second connection socket 280 to provide the connection status signal 255 and determine whether to output a power signal obtained by the second bus to the connector 240 .

The switching circuit 250 judges whether a power supply device is connected to the second connection base according to the signal obtained from the second data bus, and provides a connection status signal 255 from the connection head 240, so that the portable system 10 knows the status of the switching device 220 Connection Status. The switching circuit 250 includes, for example, a power detection circuit 251 to achieve the purpose of providing a connection status signal 255 . As mentioned above, the present embodiment uses the ID signal defined in the USB OTG to implement the connection status signal 255. It is worth noting that in OTG, the ID signal is originally defined as a fixed ground in the connector and can only be grounded or floating to indicate that the connector connected to the connector is the default host or the default peripheral. However, in this embodiment, multiple connection states are defined, for example, the ID signal is set to a first voltage such as 1/2VDD to indicate that the adapter 220 is connected to the portable device 100 and connected to a power supply device. a state.

If the adapter circuit 250 determines that a power supply device is connected to the second connection socket 280, the adapter 220 will output a power signal obtained from the second bus to the connector 240 as the power signal of the host bus signal, that is, the connector 240 The V_BUS signal is output to the first connection socket as a power signal of the first data bus. For this purpose, the switching circuit 250 includes, for example, a power control circuit 253 to achieve this. The power control circuit 253 outputs a power signal 257 to the transmission line for transmitting the power signal 263 and coupled with the connector 240 and the first connection socket 260 . The power control circuit 253 is used to buffer and output the power signal obtained from the second bus to the connector 240 . In addition, the power control circuit 253 can be regarded as a buffer, for example, includes a power switch to achieve the purpose of buffering the output.

Furthermore, the power detection circuit 251 and the power control circuit 253 may have different cooperative operation modes. In one example, the two can operate independently. As another example, in another example, in the first connection state, the power detection circuit 251 sends a control signal to the power control circuit 253, and the power control circuit 253 responds to the control signal by outputting a power obtained from the second bus. The signal is used as the power signal of the host bus signal and as the power signal of the first data bus.

In addition, there are many ways to implement the judging action of the power detection circuit 251 and the generation of the connection state signal. However, when implementing the adapter 220, it is first necessary to pre-design the adapter 220 to support at least one known power supply device or determine what the output format of the power supply device is, and judge according to the signal obtained from the second data bus. Whether a power supply device is connected to the second connection socket. For example, the general power adapter in China uses the VBUS signal in the USB format to output DC power, and the data signal groups D+ and D- are short-circuited for identification. In Taiwan, generally, there is a power adapter with an output format that conforms to the USB mini or USB micro connector, and the ID signal of its connector will be set to ground; in addition, there may be other design styles. With this knowledge, the power detection circuit 251 can be implemented with logic circuits or circuit elements such as comparators.

Please refer to an embodiment of the power detection circuit shown in FIG. 3 . The power detection circuit 300 includes a switch control circuit 310 and a switch circuit 320 . The switch control circuit 310 is used to determine whether a power supply device is connected to the second connection socket 280 according to the signal obtained from the second data bus, and accordingly generate a switch control signal 311, wherein the switch control signal corresponds to a plurality of connection states one. When the host data bus of the connection base 110 of the portable device 100 is coupled to the connector 240, the switch circuit 320 is coupled to the host data bus, and the switch circuit 320 changes state in response to the switch control signal 311 and provides a connection status signal 255 on the host data bus to inform the portable device 100 of the connection status of the adapter. The switch circuit 320 selectively has one of a plurality of resistance values according to the connection status represented by the switch control signal 311 . For example, when a power adapter 30 is connected to the second connection socket 280, and the switch control circuit 310 judges that the data signal groups D+ and D- obtained from the second data bus 281 are short-circuited according to the above, Or when it is determined that the ID signal is grounded, the switch control signal 311 is output to control the analog switch 321 of the switch circuit 320 to switch from path 1 to path 2 . That is to say, when the second connection base 280 is not connected to a power supply device, the resistance value of the switch circuit 320 is R2; It is R1||R2; if both R1 and R2 are equal to 200 ohms, that is, change from 200 ohms to 100 ohms. If the connection status signal line in the host data bus of the connection base 110 of the portable device 100 is connected with a voltage divider circuit, the connection status signal 255 is caused by the connection of the second connection base 280 on the connection status signal line. have a corresponding voltage level.

Regarding the connection state, an example is given below to illustrate the four states according to whether the portable device 100 is connected to the adapter 120 or the connection line of the general host. The first state is that when the connecting socket 110 of the portable device 100 is not connected with the adapter 120 , the connection status signal on the connection status signal line is defined to be about a voltage value VDD. In the second state, only when the connecting base 110 of the portable device 100 is connected with the adapter 120 , the connection state signal can be defined to be about a voltage of 2/3VDD. In the third state, if the adapter 120 is connected to the portable device 100 and connected to a power supply device (such as the power adapter 30 ), it can be defined that the connection state signal is about a voltage of 1/2VDD. In the fourth state, the portable device 100 supports the situation that the host connection line (not marked) is directly inserted without using the adapter 120, that is, when the ID signal defined by the USB OTG is grounded, that is, 0. The above-mentioned definitions of various connection state signals are only for convenience of explanation, and those of ordinary skill may expand and define various requirements, or change them to correspond to other voltage values to represent different states; and the actual state of the switch circuit 320 The operation is not limited to the above examples, and can also be realized by other circuits capable of achieving signal types representing different states.

In response to different states of the connection state signal 255 , the portable device 100 needs to detect to determine how to adjust the power control. An embodiment of a portable device 400 is shown in FIG. 4 . The portable device 400 includes a connection socket 410 , a bus controller 420 , a microprocessor 430 and a connection status detection circuit 450 . The microprocessor 430 is used to provide and control a host data bus, for example including a first and a second data signal line, such as D+ and D− signal lines of USB. The connection socket 410 is used for externally coupling the host data bus. The connection state detection circuit 450 is coupled to the connection socket 410 for determining the state of the host data bus and the external connection, and generating an event signal 455 . The microprocessor 430 can be used to control the portable device 400, wherein the microprocessor 430 responds to the event signal 455 to perform power control. The connection status detection circuit 450 receives the connection status signal 255 to generate an event signal 455. If the connection status signal 255 is a connection status, it indicates that the adapter is connected to the portable device 400 and connected to a power supply device. The microprocessor 430 of the 400 determines the power signal of the host bus signal of the portable device 400 according to the event signal 455 , such as the VBUS signal, so as to receive power or perform charging. In addition, the portable device 400 may further include a bus power controller 440 for receiving the VBUS signal.

Please refer to an embodiment of the connection state detection circuit 550 in FIG. 5 , together with the power detection circuit 300 in FIG. 3 , to illustrate the operation when the portable device 400 is connected to the adapter 220 . The connection state detection circuit 550 includes a voltage detection unit 560, which includes three voltage detectors 561, 563 and 565, which are respectively used to detect the connection state signal 255 on the connection state signal line. In the example of definition, such as 2/ 3VDD, 1/2VDD and 0 three voltage values. In addition, in order to meet the definition of the above example, the connection state detection circuit 550 further includes a resistor whose resistance value is R3, which is 100 ohms. In this example, when the three voltage detectors of the voltage detection unit 560 detect the above-mentioned voltage, an event E1 , E2 and E3 are respectively generated, for example implemented by an interrupt, to represent an event signal 455 . After the microprocessor 430 receives the event signal 455 , it can adjust the control of the power supply according to different connection states, such as accepting external power supply and performing charging actions.

Furthermore, please refer to a flow chart of FIG. 6 to illustrate an embodiment of how the microprocessor 430 adjusts the power control when the event signal 455 indicates the second state of the above example. First, block 600 represents that the portable device 400 is in the second state, as shown in S2, that is, the portable device has learned that the adapter 120 is connected, but is not connected to a power supply device or a user device, The portable device provides power on the power signal line, such as 5V required by USB. As shown in block 610, when the change of event signal 455 (for example, the interrupt signal of event E1 drops from high level to low level) represents that a power supply device is inserted into the adapter 120, then as shown in block 615, start charging The device or accepts the external power supply, and enters into the third state, which is shown as S3 here. As shown in block 620, when it is detected that a user device is inserted into the adapter 120, then as shown in block 640, the function of the user device is executed, and then, depending on other circumstances, as shown in block 650, 660 or 670 deal with the situation. When it is judged that the adapter 120 is pulled out, as shown in block 630 or 660 (for example, the interrupt signal of event E1 rises from low level to high level), then as shown in block 680, the microprocessor 430 knows to turn The connector has been pulled out, the bus master function is disabled, and the power supply on the power signal line is disabled, and the first state is processed at this time. As shown in block 650, if it is determined that the power supply device is inserted into the adapter 120, then as shown in block 655, start the charger or accept external power supply, and enter the third state, which is shown as S3 here . As shown in block 670, if it is determined that the user device is unplugged, then as shown in block 675, the master function of the bus is disabled.

Please refer to a flowchart of FIG. 7 to illustrate an embodiment of how the microprocessor 430 adjusts the power control when the event signal 455 indicates the third state of the above example. First, block 700 represents that the portable device 400 is in the third state, that is, the portable device is connected to the adapter, and the adapter is connected to a power supply device; the portable device is powered or charged from the external power source. As shown in the block 710, when the change of the event signal 455 indicates that the power supply device is pulled out from the adapter 120, then as shown in the block 715, the charger is turned off or stops accepting external power to supply power by itself, and enters the second mode. The state is shown as S2 here. As shown in block 720, when it is detected that a user device is inserted into the adapter 120, then as shown in block 740, the function of the user device is executed, and then, depending on other circumstances, as shown in block 750, 660 or 670 deal with the situation. When it is determined that the adapter 120 is pulled out, as shown in block 730 or 660, then it is processed as shown in block 680, and the first state is processed at this time. As shown in block 750, if it is determined that the power supply device is pulled out from the adapter 120 after the user device is executed, then as shown in block 755, turn off the charger or no longer supply power from an external power supply and instead provide self-powered power. , and enter the second state, which is shown as S2 here.

As disclosed in the above-mentioned embodiments of the present invention, a pluggable converter is pluggably connected to a data bus of a connection socket of a portable device, and the portable device is connected through multiple connections of the converter. The socket is capable of simultaneously connecting a power supply from one connection socket of the adapter for power distribution, and connecting at least one user device from another connection socket of the adapter. According to this, on the one hand, the portable device can use the power supply to charge its battery and connect with the user device to transmit data. Convenience and full application of external power supply.

To sum up, although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims (18)

1. pluggable adaptor, in order to a host data bus of a connecting seat of connecting a portable apparatus, this adapter comprises:

One first Connection Block can couple in order to one first data/address bus with one first electronic installation with plugging;

One second Connection Block can couple in order to one second data/address bus with a second electronic device with plugging;

One connector, can plug couple in order to this host data bus with this Connection Block of this portable apparatus, to provide one group of host bus signal on this host data bus of this portable apparatus, wherein, this group host bus signal comprises a data-signal, a connection status signal and a power supply signal;

Wherein, this first Connection Block is coupled to this connector, so that an at least one data signal line of at least one data signal line of this first data/address bus of this first electronic installation and a power supply signal line and this host bus and a power supply signal line couple;

One built-up circuit couples this second data/address bus of this second Connection Block;

Wherein, this built-up circuit is connected to this second Connection Block according to the signal of this second data/address bus gained to judge whether this second electronic device, and provides this connection status signal from this connector, so that this portable apparatus is learnt the connection status of this adapter;

Wherein, if this built-up circuit is judged this second electronic device and is connected to this second Connection Block, this built-up circuit will be exported from a power supply signal of this second bus gained to this connector with this power supply signal as this host bus signal, and export this first Connection Block to the power supply signal as this first data/address bus.

2. pluggable adaptor as claimed in claim 1, wherein this connection status signal corresponds to one of a plurality of connection status, and described a plurality of connection status comprise:

One first connection status represents that this adapter couples this portable apparatus, and connects an electric supply installation that wherein this first electronic installation comprises user's device, and this second electronic device comprises this electric supply installation.

3. pluggable adaptor as claimed in claim 2, wherein this host data bus is a USB (universal serial bus), and the ID signal that this connection status signal of this group host bus signal is this USB.

4. pluggable adaptor as claimed in claim 2, wherein if this connection status signal is when be this first connection status, whether this portable apparatus gets and determines according to this to be subjected to electricity or to charge from this power supply signal of this host bus signal.

5. pluggable adaptor as claimed in claim 1, wherein this built-up circuit comprises:

One power sense circuit, be connected to this second Connection Block in order to signal to have judged whether an electric supply installation according to this second data/address bus gained, and provide this connection status signal from this connector, so that this portable apparatus is learnt the connection status of this adapter; And

One power control circuit, in order to output from a power supply signal of this second bus gained to this connector with this power supply signal as this host bus signal, and export this first Connection Block to this power supply signal as this first data/address bus.

6. pluggable adaptor as claimed in claim 5, wherein:

This power sense circuit then sends a control signal if judging this electric supply installation is connected to this second Connection Block;

This power control circuit, in response to this control signal, output with this power supply signal as this host bus signal, and exports this first Connection Block to this power supply signal as this first data/address bus from a power supply signal of this second bus gained to this connector.

7. pluggable adaptor as claimed in claim 5, wherein, this power control circuit comprises a mains switch, in order to buffering output from this power supply signal of this second bus gained to this connector.

8. pluggable adaptor as claimed in claim 5, wherein this power sense circuit comprises:

One ON-OFF control circuit is connected to this second Connection Block in order to the signal according to this second data/address bus gained to judge whether this electric supply installation, and produces a switch controlling signal according to this, and wherein this switch controlling signal corresponds to one of a plurality of connection status; And

One switching circuit, when this host data bus of this Connection Block of this portable apparatus and this connector couple, this switching circuit and this host data bus couple, this switching circuit is in response to this switch controlling signal, provide this connection status signal on this host data bus, and the connection status in order to inform that this portable apparatus must this adapter.

9. pluggable adaptor as claimed in claim 8, wherein, this switching circuit optionally has one of a plurality of resistance values according to the connection status of this switch controlling signal representative, and this connection status signal is when corresponding to one of those connection status, the voltage level with a correspondence.

10. pluggable adaptor as claimed in claim 1, wherein whether this built-up circuit has an electric supply installation to be connected to this second Connection Block according to the whether short circuit of one first data-signal of this second data/address bus gained and one second data-signal with decision.

11. pluggable adaptor as claimed in claim 1, wherein whether this built-up circuit has an electric supply installation to be connected to this second Connection Block according to an ID signal of this second data/address bus gained ground connection whether with decision.

12. pluggable adaptor as claimed in claim 1, wherein whether this built-up circuit has an electric supply installation to be connected to this second Connection Block according to one first data-signal, one second data-signal, an ID signal and a power supply signal of this second data/address bus gained with decision.

13. portable system:

One portable apparatus comprises:

One bus control unit is to provide and to control a host data bus;

A connecting seat is in order to couple the interface of this host data bus from the outside;

One connection status testing circuit couples with this Connection Block, in order to judge this host data bus and the outside state that couples, produces an event signal; And

One microprocessor, in order to control this portable apparatus, wherein, this microprocessor is in response to this event signal, to carry out power supply control;

And

One adapter, can plug in order to this host data bus of this Connection Block of connecting this portable apparatus, this adapter comprises:

One first Connection Block can couple in order to one first data/address bus with user's device with plugging;

One second Connection Block can couple in order to one second data/address bus with an electric supply installation with plugging;

One connector, can plug couple in order to this host data bus with this Connection Block of this portable apparatus, to provide one group of host bus signal on this host data bus of this portable apparatus, wherein, this group host bus signal comprises a data-signal, a connection status signal and a power supply signal;

Wherein, at least one holding wire of this first data/address bus of this first Connection Block is coupled to this host bus of this connector with this data-signal as this group host bus signal;

One built-up circuit couples this second Connection Block, in order to the signal that is provided according to this second data/address bus, so that this group host bus signal to be provided from this connector;

Wherein, this built-up circuit is connected to this second Connection Block according to the signal of this second data/address bus gained to have judged whether an electric supply installation, and provides this connection status signal from this connector, so that this portable apparatus is learnt the connection status of this adapter;

Wherein, if this built-up circuit has been judged an electric supply installation and has been connected to this second Connection Block, this built-up circuit will be exported from a power supply signal of this second bus gained to this connector with this power supply signal as this host bus signal, and export this first Connection Block to the power supply signal as this first data/address bus;

Wherein this connection status testing circuit of this portable apparatus receives this connection status signal to produce this event signal, if this connection status signal is one first connection status when connecting this portable apparatus and connecting an electric supply installation to represent this adapter, this microprocessor of this portable apparatus according to this event signal to determine this portable apparatus and be subjected to electricity or to charge by this power supply signal of this host bus signal.

14. portable system as claimed in claim 13, wherein this host data bus is a USB (universal serial bus), and the ID signal that this connection status signal of this group host bus signal is this USB.

15. portable system as claimed in claim 13 wherein, has user's device to be couple to this host data bus if bus control unit detects the outside through this Connection Block, then carries out the function of user's device of this host data bus.

16. portable system as claimed in claim 13, wherein, when being this first connection status as if this connection status signal, this user's device is subjected to from this power supply signal of this host bus signal.

17. portable system as claimed in claim 13, wherein, if this connection status signal is one second connection status representing that this adapter connects when not connecting an electric supply installation, this microprocessor of this portable apparatus is controlled not from this power supply signal of this host bus signal according to this event signal and is subjected to electricity or charges.

Whether 18. portable system as claimed in claim 13, wherein, this connection status testing circuit comprises a voltage detection unit, be this first connection status of representative to judge this connection status signal, if then produce an event signal.

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