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. 01, 1996
Filed:
Nov. 04, 1992
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
There is a signal representing an original image. A device generates a signal representing a predicted image original image. A subtracter derives a difference between the original-image signal and the predicted-image signal, and outputs the derived difference as a prediction error signal. The prediction error signal is transformed into a transform-resultant signal. The transform-resultant signal is quantized with quantization characteristics. An activity of the original image is derived from the original-image sign. An activity is derived from the prediction error signal. The quantization characteristics are controlled in response to both the original-image activity and the prediction-error activity.