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:
Jul. 01, 1980
Filed:
Jul. 05, 1978
Donald E Dick, Boulder, CO (US);
Robert L Metz, Superior, CO (US);
Raymond D Elliott, Denver, CO (US);
Life Instruments Corporation, , CO (US);
Abstract
Method and apparatus for optically recording and reproducing video signals. The intensity of a laser beam is modulated as a function of the amplitude of the video signals. The modulated laser beam is caused to conduct a raster scan synchronized by standard TV sync pulses and used to expose photographic film. Horizontal and vertical sync bars of contrasting optical density are recorded beyond the borders of the raster. The developed film is a directly viewable reproduction of the image scanned to produce the video signals recorded. To reproduce the video signals, an unmodulated laser beam conducts a raster scan of the developed image recorded on the film. The intensity of the scanning beam is modulated by the optical density of the film and converted to amplitude modulated electrical signals, a reproduction of the video signals recorded. The optically recorded sync bars are also detected and are used to produce electrical sync pulses to position the raster scan conducted by the unmodulated beam to substantially overlie the image recorded on the film being scanned.