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:
Sep. 09, 1997
Filed:
Aug. 19, 1993
Tatsuo Kawanaka, Tokyo, JP;
GE Yokogawa Medical Systems, Limited, Tokyo, JP;
Abstract
A three-dimensional image display device comprising a main-image storage device for storing data representative of a main image; a sub-image storage device for storing data representative of a reduced image of the main image; coordinate input device for continuously entering a change in the viewing direction of an image; converting device for converting the output coordinate data of the coordinate input device into angle data representative of the image viewing direction; three-dimensional image calculating device for converting the main image data into three-dimensional image data on the basis of the angle data representative of the image viewing direction; changeover device for normally applying the sub-image data to the three-dimensional calculating device and for applying the main image data to the three-dimensional calculating device; control device for applying the angle data to the three-dimensional image calculating device and for controlling the changeover device; and image display device for displaying the main image and the sub-image on the same screen, whereby the view direction of the sub-image is changed until the desired direction is obtained, and then the main image in that desired direction is displayed. Advantageously, the invention enables selecting a view direction in real time by observing the view direction of the sub-image without the requirement of a dedicated hardware for such purpose.