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:
Aug. 15, 1978
Filed:
Aug. 25, 1977
Norbert Burgermann, Munich, DE;
AGFA-Gevaert, A.G., Leverkusen, DE;
Abstract
The user selects a fadeover duration by selecting the number of pulses in a reference pulse packet registered by a reference counter. During film transport in either direction, a frame-pulse counter counts up a number of frame pulses equal to the number of pulses in the reference pulse packet, and then performs another frame-pulse counting cycle. Each frame-pulse counting cycle advances a program-step counter. Logic circuitry is responsive to the count on the program-step counter and, during the successive program steps, causes fade-out, film-rewind, and fade-in operations to be performed. The adjusting motor for the diaphragm operates at a speed inversely related to the number of pulses in the reference pulse packet, and the amount by which the adjusting motor changes the diaphragm setting during each frame-pulse counting cycle is always the same.