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:
Feb. 17, 2009
Filed:
Nov. 19, 2007
Teng LV, Shenzhen, CN;
Teng Lv, Shenzhen, CN;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A portable computer having a display part and a main part includes a magnetic piece installed in the display part, a Hall sensor installed in the main part, a switch circuit, and a control terminal connected to a power supply of a back light module of the display part. The Hall sensor includes a power pin connected to a first DC power supply, an output pin, and a ground pin connected to ground. The output pin of the Hall sensor is connected to the control terminal and a second DC power supply via the switch circuit, when the display part is in a closed position, the Hall sensor senses the magnetic field of the magnetic piece and outputs a control signal to the switch circuit, the switch circuit receives the control signal and turns off the power supply of the back light module via the control terminal.