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. 23, 2010
Filed:
Dec. 11, 2006
Chun-wei Pan, Guangdong, CN;
Han-che Wang, Guangdong, CN;
Chen-hsuan Ho, Guangdong, CN;
Shin-hong Chung, Guangdong, CN;
Chun-Wei Pan, Guangdong, CN;
Han-Che Wang, Guangdong, CN;
Chen-Hsuan Ho, Guangdong, CN;
Shin-Hong Chung, Guangdong, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A power-off circuit includes a power unit (), a power management unit (), an integrated circuit chip (IC chip,), a switching apparatus (), and a clamp circuit (). The switching apparatus produces and transmits a power-off instruction to the power management unit. The power management unit produces and transmits a power-off notice to the IC chip in accordance with the power-off instruction. And the IC chip feeds back a power-off affirmation in accordance with the power-off notice to the clamp circuit. The clamp circuit receives the power-off affirmation and produces and transmits interrupted power-off signals to the power management unit, till the power management unit completely cuts off power supplied from the power unit to the IC chip.