The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2013
Filed:
Dec. 31, 2008
Applicants:
Tsang-ming Chang, Taipei, TW;
Yi-hung Shen, Taipei, TW;
Inventors:
Tsang-Ming Chang, Taipei, TW;
Yi-Hung Shen, Taipei, TW;
Assignee:
Compal Electronics, Inc., Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H 83/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A portable electronic device is provided. The portable electronic device includes a system end and an adapter. The system end provides a trigger signal. The adapter converts an input AC voltage into an output DC voltage and provides the output DC voltage to the system end. When the adapter is connected to the system end, the trigger signal turns on the adapter. When the adapter is disconnected from the system end, the adapter detects an absence of the trigger signal and turns off automatically.