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:
Oct. 03, 2000
Filed:
Aug. 30, 1994
Vishal Markandey, Dallas, TX (US);
Robert John Gove, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method of forming an image scaling filter for converting a first number of input lines to a second number of output lines comprises the steps of determining an optimal frequency response without sharp cutoffs for a given scaling factor and for a determined number of taps per line 102. Filter coefficients are provided based on the determined filter taps per line and the determined optimal frequency response 103. The coefficients are grouped into sets 104 corresponding to the taps per output line and the coefficients are rescaled so the sum of the set equals one 105. The input lines are multiplied by the rescaled coefficients and summed 106 to achieve the output line values.