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:
Jul. 05, 2005
Filed:
Jan. 03, 2003
Applicants:
Yen-chang Chiu, Taipei, TW;
Kao-pin Wu, Hsinchu, TW;
Ting-hao Yeh, Tainan, TW;
Ming-chuan Lo, Hsinchu, TW;
Inventors:
Yen-Chang Chiu, Taipei, TW;
Kao-Pin Wu, Hsinchu, TW;
Ting-Hao Yeh, Tainan, TW;
Ming-Chuan Lo, Hsinchu, TW;
Assignee:
Elan Microelectronics Corporation, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K007/08 ;
U.S. Cl.
CPC ...
Abstract
A USB interface controller chip comprises a pair of signal ports for being connecting with a pair of USB signals and a power node for being connecting with a supply voltage characterized in that the controller chip is built-in with a pull-up resistor connected between the power node and one of the pair of signal ports, and the pull-up resistor has a resistance consistent to USB standard but has a tolerance larger than that defined by USB specification.