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:
Jan. 10, 1989
Filed:
Feb. 05, 1988
Yusheng T Tsai, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
The system and method of the present invention compresses digitized color image signals in real time with an error tolerant compression algorithm utilizing block truncation coding. The system operates upon the digitized color components Y, I and Q derived from scanning an image plane. Memory buffers, under control of an address generator, receive digitized color components and store them in a 4.times.4 block format. The system further subdivides each Y and I block into four 2.times.2 blocks. An I.sub.avg. signal is derived by averaging 4 neighboring pixels in each 2.times.2 block of the I image plane, and a Q.sub.avg. signal is derived by averaging the 16 pixel values forming the 4.times.4 block of the Q image plane. Signal compression is accomplished by representing the Y and I blocks with two values and a bitmap. Three pipelined signal channels work in parallel to real-time process the signals. The processed signals are encoded for transmission over a channel. At the channels receiver a decoder decodes the signals and a decompression circuit reconstructs the Y, I and Q signals.