Transmittal system and connection device

1. A transmittal system, comprising:

an extension device comprising a first connection port and a second connection port coupled to a peripheral device;

a connection device comprising a third connection port and a fourth connection port, wherein the third connection port is coupled to the first connection port, and the fourth connection port is coupled to an electronic device; and

an impedance device connecting at least one of the first, the third and the fourth connection ports to ground, wherein the peripheral device is capable of controlling the electronic device, wherein the extension device transmits signals between the peripheral device and the electronic device such that the peripheral device is capable of controlling the computing function of the electronic device,

wherein each of the first connection port, the third connection port and the fourth connection port comprises a USB connector port with a corresponding identification (ID) pin,

wherein the extension device is configured to serve as a hub to transmit data from the electronic device to the peripheral device and transmit data from the peripheral device to the electronic device, and

wherein the impedance device comprises an internal resistor that connects the ID pin of the first connection port to the ground within the extension device for identifying that the electronic device is capable of being charged.

2. The transmittal system as claimed in claim 1 , wherein the electronic device is a host with a computing function.

3. The transmittal system as claimed in claim 1 , wherein the third connection port is a USB 2.0 Micro-B connector, a USB 2.0 Mini-B connector or a USB 3.0 Micro-B connector, and the fourth connection port is a USB 2.0 Micro-B connector, a USB 2.0 Mini-B connector or a USB 3.0 Micro-B connector.

4. The transmittal system as claimed in claim 1 , wherein the connection device is a connection cable or a printed circuit board (PCB).

5. The transmittal system as claimed in claim 1 , wherein the connection device is integrated into the extension device.

6. The transmittal system as claimed in claim 1 , wherein the impedance device is integrated into the extension device or the connection device.

7. The transmittal system as claimed in claim 1 , wherein the first connection port is a USB 2.0 Micro-B connector, a USB 2.0 Mini-B connector or a USB 3.0 Micro-B connector.

8. The transmittal system as claimed in claim 1 , wherein the extension device further comprises a fifth connection port, and when external power is received by the fifth connection port, the first connection port is coupled to the third connection port and the fourth connection port is coupled to the electronic device, the external power is provided to the electronic device and the peripheral device.

9. The transmittal system as claimed in claim 1 , wherein the extension device is a hub, and when the second connection port is coupled to the peripheral device, the electronic device communicates information with the peripheral device each other.

10. The transmittal system as claimed in claim 1 , wherein the electronic device comprises a sixth connection port, the fourth connection port is configured to couple to the sixth connection port, and the sixth connection port is a USB 2.0 Micro-B connector, a USB 2.0 Mini-B connector or a USB 3.0 Micro-B connector.

11. A transmittal system comprising:

an extension device comprising a first connection port;

an electronic device coupled to the first connection port;

a peripheral device coupled to the extension device, wherein the peripheral device is capable of controlling the electronic device, wherein the extension device transmits signals between the peripheral device and the electronic device such that the peripheral device is capable of controlling the computing function of the electronic device; and

an impedance device comprising a resistor internal to the extension device for connecting an ID pin of the first connection port to ground within the extension device for identifying that the electronic device is capable of being charged, wherein the extension device is configured to serve as a hub to transmit data from the electronic device to the peripheral device and transmit data from the peripheral device to the electronic device.

12. The transmittal system as claimed in claim 11 , wherein the electronic device is a host with a computing function.

13. The transmittal system as claimed in claim 11 , wherein the first connection port is USB 2.0 Micro-B connector, a USB 2.0 Mini-B connector or a USB 3.0 Micro-B connector.

14. The transmittal system as claimed in claim 11 , wherein the extension device further comprises a second connection port, and when the second connection port receives external power and the first connection port is coupled to the electronic device, the external power is provided to the electronic device and the peripheral device, wherein the external power is provided to the electronic device when the ID pin of the first connection port is coupled to ground.

15. The transmittal system as claimed in claim 14 , wherein the extension device further comprises a third connection port, the extension device is a hub, and when the third connection port is coupled to the peripheral device, the electronic device communicates information with the peripheral device each other.

16. The transmittal system as claimed in claim 14 , wherein the electronic device comprises a fourth connection port, the fourth connection port is configured to be coupled to the first connection port, and the fourth connection port is USB 2.0 Micro-B connector, a USB 2.0 Mini-B connector or a USB 3.0 Micro-B connector, and the fourth connection port comprises an ID pin.

17. The transmittal system as claimed in claim 1 , wherein the first connection port is a USB connector with an identification (ID) pin, and the impedance device connects the identification pin to the ground.