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. 14, 2001
Filed:
Dec. 31, 1997
Applicant:
Inventors:
Musa Jahanghir, Hayward, CA (US);
Jack Chaney, San Jose, CA (US);
Michael A. Kaufman, San Jose, CA (US);
Assignee:
Samsung Electronics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/32 ; G06K 9/36 ; G06K 9/46 ; H04N 7/01 ; H04N 7/12 ;
U.S. Cl.
CPC ...
G06K 9/32 ; G06K 9/36 ; G06K 9/46 ; H04N 7/01 ; H04N 7/12 ;
Abstract
A method and an apparatus for converting a high definition image to a relatively lower definition image is provided. Image data encoded with a discrete cosine transform (DCT) is decoded using an inverse wavelet transform (IDWT). A fast inverse discrete wavelet transform (FIDWT) is also provided that reduces the number of multiplication operations relative to the IDWT. Image data is also encoded using a discrete wavelet transform (DWT) and then decoded using an (IDWT).