Invention Grant
- Patent Title: USB dedicated charger identification circuit
- Patent Title (中): USB专用充电器识别电路
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Application No.: US12611745Application Date: 2009-11-03
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Publication No.: US08358100B2Publication Date: 2013-01-22
- Inventor: Kenneth Helfrich
- Applicant: Kenneth Helfrich
- Applicant Address: US CA San Jose
- Assignee: Maxim Integrated Products, Inc.
- Current Assignee: Maxim Integrated Products, Inc.
- Current Assignee Address: US CA San Jose
- Agency: TIPS Group
- Main IPC: H02J7/00
- IPC: H02J7/00

Abstract:
In an embodiment, set forth by way of example and not limitation, a USB dedicated charger identification circuit includes a USB D+ port, a USB D− port, a first circuit conforming to a first identification protocol, a second circuit conforming to a second identification protocol, and logic selectively coupling one of the first circuit and the second circuit to the USB D+ port and the USB D− port. In an alternate embodiment set forth by way of example and not limitation, a method to provide USB charger identification includes providing a first USB charger identification at a USB D+ port and a D− port. Next, it is detected if the first USB charger identification was inappropriate. Then, if the first USB charger identification was inappropriate, a second USB charger identification is provided at the USB D+ port and the D− port.
Public/Granted literature
- US20110276734A1 USB Dedicated Charger Identification Circuit Public/Granted day:2011-11-10
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