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:
Jun. 26, 1990
Filed:
Jul. 05, 1988
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A projection apparatus for selecting one of a plurality of cartridges each of which stores an information recording medium and for projecting information of the information recording medium stored in a selected one of the cartridges includes a first cartridge reception member for holding the cartridge in a first position, a second cartridge reception member for holding the cartridge in a second position, an optical system for projecting information of the information recording medium onto a predetermined position, a detector for detecting the presence/absence of the cartridge in the first and second cartridge reception members, and a retrieval control circuit for controlling the first and second cartridge reception members to cause the optical system to project the information of the information recording medium of the cartridge first detected by the detector.