Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1991-12-31
1992-12-22
Groody, James J.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358216, 358 54, H04N 336, H04N 5253
Patent
active
051737809
ABSTRACT:
In a flying spot telecine including cathode ray tube scanning circuit for generating flying spot and a photodetector for receiving light transmitted by a film strip being scanned by the telecine, a control circuit is provided for causing the CRT scanning circuit to scan an area (18) corresponding to the position of one or more perforations (16) in the film strip (10) being scanned. The output from the photodetector during a scan of the area (18) provides a correction signal for adjusting the video signal level. Preferably, the scan of the area (18) is performed during line blanking or frame blanking periods.
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patent: 4914520 (1990-04-01), Beard
K. M. Trampel and H. H. Jensen, Calibration of Photographic Scanning System, Jan./1963, vol. 5 No. 8, pp. 110-111, IBM Technical Disclosure Bulletin.
Dominic J. Case, Telecine-Compatible Prints, Jun. 1989, SMPTE Journal pp. 451-454.
Henry A. Barrett, Improved Telecine Image Quality: The Influence of Black Level, Oct. 1973, SMPTE Journal pp. 829-840.
Groody James J.
Hsia Sherrie
Rank Cintel Limited
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