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. 25, 2006
Filed:
Oct. 18, 2004
Hayden Clavie Cranford, Jr., Cary, NC (US);
Louis Lu-chen Hsu, Fishkill, NY (US);
James Stephen Mason, Eastleigh, GB;
Gareth John Nicholls, Brockenhurst, GB;
Philip Murfet, Stockbridge, GB;
Samuel Ray, Morgan Hill, CA (US);
Hayden Clavie Cranford, Jr., Cary, NC (US);
Louis Lu-Chen Hsu, Fishkill, NY (US);
James Stephen Mason, Eastleigh, GB;
Gareth John Nicholls, Brockenhurst, GB;
Philip Murfet, Stockbridge, GB;
Samuel Ray, Morgan Hill, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Described is a system for trimming the value of an electronic component. The system comprises: at least one trimming component, each trimming component having an associated switch for selectively connecting that trimming component to the electronic component in response to a corresponding bit in a control vector. A comparator is included for generating an output bit having a first value if a net value of the electronic component and any connected trimming components differs from a desired value. A controller connected to the switches and the comparator generates the control vector in dependence on the output of comparator, the controller comprising a shift register for sequentially receiving successive output bits from the comparator; wherein the control vector comprises the contents of the shift register and wherein a bit of said first value in control vector effects switching of the corresponding switch.