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:
Aug. 11, 1992
Filed:
Jun. 03, 1991
Jon Soloff, Basingstoke, GB;
Abekas Video Systems Limited, Berkshire, GB;
Abstract
A method of transforming a video image includes sampling a digital video signal at a higher frequency f.sub.2 than a usual frequency f.sub.1 and storing the sampled signals. The stored information is interpolated and addressed so as to create a video signal representing a required transformation, the frequency of the video signal being reduced to the usual sampling frequency f.sub.1. The method can be applied for enlarging and reducing the video image. Where the image is reduced, the reduction is limited to prevent the effect of interference between Fourier spectral harmonic bands and a fundamental band of the components of a reduced video image signal when it is created from the stored information. Preferably, the reduction is limited to provide gaps or guard bands which prevent this interference. The method advantageously provides high resolution horizontal components in the transformed video image.