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. 07, 2003
Filed:
Jul. 29, 1998
Teruo Hieda, Yokohama, JP;
Ken Terasawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
For enabling image enlargement or reduction of high image quality with improved definition, there is disclosed an image interpolating device comprising a memory for storing digital image signal, memory readout means for reading pixel data in succession from the memory, first, second and third consecutive delay means for respectively delaying the image signal S , read by the memory readout means, to respectively from pixel signals S , S , S , first, second, third and fourth coefficient generation circuits for generating interpolation coefficients respectively corresponding to the pixel signals S , S , S , S and determined by N-th order functions from the position of the interpolated pixel S′ positioned between the pixel signals S and S , and a signal synthesis circuit for calculating the sum of respective product of pixel signal S and interpolation coefficient k .