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:
May. 16, 2000
Filed:
Jun. 25, 1997
Shinichiro Miyazaki, Kanagawa, JP;
Akira Shirahama, Kanagawa, JP;
Takeshi Ono, Saitama, JP;
Nobuo Ueki, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
A picture processing apparatus and method for enlarging and reducing a picture wherein when a picture is reduced, horizontally adjacent pixel data is supplied from a delaying device to a horizontally interpolating circuit. With the pixel data, a coefficient p and a 1's complement (1-p) thereof supplied from an interpolation coefficient circuit, an interpolating process in the horizontal direction is performed. In addition, a pixel at the position of p=1 is thinned out. Pixel data that has been interpolated in the horizontal and vertical directions and that has been thinned out is written to a memory. When a picture is enlarged, pixel data that is read from a memory is delayed by two line memories and two adjacent pixels are properly selected by a switch circuit. A vertically interpolating circuit performs an interpolating process in the vertical direction. When pixel data is read from the memory, particular pixel data is read twice depending on a magnification. In the horizontal direction, likewise, an interpolating process is performed in the similar manner and an enlarging process is performed.