US 9,812,882 B2
Internet device and automatic switching method, apparatus and circuit for charging interface of internet device
Liang Yang, Shenzhen (CN)
Assigned to XI'AN ZHONGXING NEW SOFTWARE CO. LTD, Xi'An (CN)
Appl. No. 14/113,321
Filed by Liang Yang, Shenzhen (CN)
PCT Filed Nov. 21, 2011, PCT No. PCT/CN2011/082552
§ 371(c)(1), (2), (4) Date Oct. 22, 2013,
PCT Pub. No. WO2012/159427, PCT Pub. Date Nov. 29, 2012.
Claims priority of application No. 2011 1 0132560 (CN), filed on May 20, 2011.
Prior Publication US 2014/0084852 A1, Mar. 27, 2014
Int. Cl. H02J 7/00 (2006.01); G06F 1/26 (2006.01); H02J 1/10 (2006.01)
CPC H02J 7/0052 (2013.01) [G06F 1/263 (2013.01); H02J 7/0036 (2013.01); H02J 7/0055 (2013.01); H02J 1/10 (2013.01); Y10T 307/74 (2015.04)] 4 Claims
OG exemplary drawing
 
3. An internet device, comprising a device charging interface, a dock charging interface and a charging loop, characterized by further comprising an automatic switching apparatus for a charging interface, wherein the automatic switching apparatus for the charging interface comprises a detection module and a switching module, wherein
the detection module is configured to, when external power supply is connected into the device, judge whether the dock charging interface is docked and send a judgment result to the switching module; and
the switching module is configured to, when the dock charging interface is docked, isolate the device charging interface and at the same time, connect the charging loop through the dock charging interface; or, when the dock charging interface is not docked, isolate the dock charging interface and at the same time, connect the charging loop through the device charging interface;
wherein a circuit of the automatic switching apparatus comprises a first diode, a second diode, a first resistor, a second resistor, a third resistor, a phase inverter, a first P Metal Oxide Semiconductor Field Effect Transistor (PMOSFET), a second PMOSFET and a third PMOSFET,
the anode of the first diode is connected with the dock charging interface, one end of the second resistor, the gate of the first PMOSFET and the drain of the second PMOSFET respectively; the cathode of the first diode is connected with one end of the first resistor; the other end of the first resistor is connected with the cathode of the second diode and the source of the first PMOSFET respectively; the drain of the first PMOSFET is connected with one end of the third resistor, the input end of the phase inverter and the gate of the second PMOSFET respectively; the output end of the phase inverter is connected with the gate of the third PMOSFET; the other end of the second resistor and the other end of the third resistor are grounded; the anode of the second diode is connected with the device charging interface and the drain of the third PMOSFET respectively; and the source of the second PMOSFET and the source of the third PMOSFET are connected with the input end of the charging loop.