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. 04, 2003
Filed:
Dec. 14, 2001
Gunther Lehmann, Poughkeepsie, NY (US);
Ulrich Frey, Poughkeepsie, NY (US);
Oliver Weinfurtner, Holzkirchen, DE;
Infineon Technologies AG, Munich, DE;
Abstract
An anti-fuse system composed of a multiplicity of anti-fuse circuits ( N) connected across a voltage source ( ) by a pair of conductors ( ). Each anti-fuse circuit comprising an anti-fuse ( ) connected in a series with a blow or control transistor ( ) and a control circuit ( ) for monitoring the status of the anti-fuse ( ), Control circuit ( ) provides an “on” signal to the gate ( ) of control transistor ( ) only when a_“select_” signal is received at an input ( ) of control circuit ( ) and if anti-fuse ( ) has not been blown. After the anti-fuse ( ) is blown, control circuit ( ) turns off the control transistor ( ) thereby providing a constant power source voltage across each anti-fuse circuit ( N) regardless of the number of parallel anti-fuses which have been blown.