Patents by Inventor John C. Stephens

John C. Stephens has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System, method, and computer software product for gain adjustment in biological microarray scanner
    Patent number: 7062092
    Abstract: Systems, methods, and computer program products are described for adjusting the gain of a scanner. The scanner includes one or more excitation sources, an emission detector having a first gain, and a variable gain element having a second gain. One described method includes receiving a user-selected gain value, adjusting the first gain based on a first portion of the user-selected gain value, and adjusting the second gain based on a second portion of the user-selected gain value. Another described method includes selecting an auto-gain value, adjusting the first gain based on a first portion of the auto-gain value, adjusting the second gain based on a second portion of the auto-gain value, causing the scanner to collect sample pixel intensity values, determining a comparison measure based on comparing the sample pixel intensity values to desired pixel intensity values, and adjusting the auto-gain value based on the comparison measure.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: June 13, 2006
    Assignee: Affymetrix, Inc.
    Inventors: Shantanu V. Kaushikkar, Nathan K. Weiner, Eric E. McKenzie, John C. Stephens
  • System, method, and computer software product for gain adjustment in biological microarray scanner
    Publication number: 20020168094
    Abstract: Systems, methods, and computer program products are described for adjusting the gain of a scanner. The scanner includes one or more excitation sources, an emission detector having a first gain, and a variable gain element having a second gain. One described method includes receiving a user-selected gain value, adjusting the first gain based on a first portion of the user-selected gain value, and adjusting the second gain based on a second portion of the user-selected gain value. Another described method includes selecting an auto-gain value, adjusting the first gain based on a first portion of the auto-gain value, adjusting the second gain based on a second portion of the auto-gain value, causing the scanner to collect sample pixel intensity values, determining a comparison measure based on comparing the sample pixel intensity values to desired pixel intensity values, and adjusting the auto-gain value based on the comparison measure.
    Type: Application
    Filed: July 17, 2001
    Publication date: November 14, 2002
    Inventors: Shantanu V. Kaushikkar, Nathan K. Weiner, Eric E. McKenzie, John C. Stephens