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:
Apr. 08, 1997
Filed:
Mar. 24, 1994
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An image filing apparatus comprises an irreversible signal compression device for carrying out irreversible signal compression processing on an original image signal, which is made up of a series of image signal components representing an original image, and thereby generating an irreversibly compressed image signal. The irreversibly compressed image signal is stored on a first storage device. A difference operation device subtracts the image signal components of the original image signal and the irreversibly compressed image signal from each other which represent corresponding picture elements in the original image and the image represented by the irreversibly compressed image signal. A difference image signal is thereby generated which represents a difference image corresponding to the differences between the original image signal and the irreversibly compressed image signal. A reversible signal compression device carries out reversible signal compression processing on the difference image signal and thereby generates a reversibly compressed difference image signal. The reversibly compressed difference image signal is stored on a second storage device, on which information can be rewritten.