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:
Nov. 29, 2005
Filed:
Jan. 16, 2004
Carl Larry Ostrowski, Pinckney, MI (US);
Robert Howard Carlson, Aliso Viejo, CA (US);
Carl Larry Ostrowski, Pinckney, MI (US);
Robert Howard Carlson, Aliso Viejo, CA (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A signal translator circuit, for use in sending test signals to an IC-chip in a chip testing system, includes first and second resistors, and a single transistor. The transistor has a current channel which is coupled in series with the first resistor between a source voltage terminal and an output terminal. The single transistor also has a control lead, for enabling and disabling the flow of current through the current channel, which receives an input test signal at voltage levels that are to be translated. The output terminal is coupled through the second resistor to a reference voltage terminal. The output terminal is also coupled to an input terminal of a socket which is structured to hold the IC-chip.