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:
Jan. 23, 2007
Filed:
Mar. 04, 1999
Applicants:
Yu-chuan Chang, Taipei, TW;
Xue-ning Ren, Shanghai, CN;
Inventors:
Yu-Chuan Chang, Taipei, TW;
Xue-Ning Ren, Shanghai, CN;
Assignee:
Inventec Corp, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/28 (2006.01); G06F 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method and an universal module for testing functions of communication ports of a computer, including both parallel port and serial port. The module includes a logic control unit and connects to a communication port (a serial or a parallel port) for testing the open or short conditions of the ports through walk 1' and a walk 0′ logic tests. The testing module not only can check the open condition of a parallel port, but also can check the open and short conditions of a parallel port and a serial port.