USB cable and method for charging battery of external apparatus by using USB cable
AssigneeSourcenext Corporation
InventorNoriyuki Matsuda
Life of this patent
Estimating the term…
Abstract
A USB cable according to the present invention has a USB connector connected with a USB port of a PC (Personal Computer), a phone connector connected with a connector of an external connector such as a mobile phone, a control unit, which is situated between the USB connector and the phone connector, for charging a battery of the mobile phone by using power supplied from the USB port of the PC and for transmitting and receiving data with the PC and the mobile phone, and a cable for connecting the USB connector and the phone connector with the control unit respectively.
Claims13
A USB (Universal Serial Bus) cable for charging a battery of an external apparatus comprising:
- a first connector connected with a USB port of a personal computer;
- a second connector connected with a connector of the external apparatus;
- a cable for connecting the first connector and said second connector;
- and
- charging means, which is situated between said first connector and said second connector, for charging a battery of the external apparatus by using power supplied from the USB port.
A method for charging a battery of an external apparatus connected with a USB port of a personal computer by using a USB cable, comprising:
- (A) regulating a voltage of USB power (a voltage value V0) supplied from the USB port of the personal computer to be a predetermined voltage (a voltage value VC);
- (B) outputting the regulated voltage (the voltage value VC) to the external apparatus and charging the battery of the external apparatus with the regulated voltage (the voltage value VC);
- (C) detecting the regulated voltage (the voltage value VC);
- (D) detecting whether the detected voltage value VC is in the range of a predetermined threshold or not;
- (E) generating a voltage interrupt signal in case where the detected voltage value VC is out of the range of the predetermined threshold;
- and
- (F) interrupting the charging process of said step (B) in accordance with the voltage interrupt signal.
Dependencies are inferred from the claim text.