{"e":{"id":287556,"source":"ia_catalogofcopyri341213libr","title":"TELEVISION PRINCIPLES","header":"nc., 1949. 100 ft., b&w, 16mm. Summary: The basic principles of television. Explains the structure and function of the cathode ray tubes, and shows how the amplitude modulated carrier for the picture and synchronizing pulses is combined with the frequency modulated carrier for the accompanying sound","year":1949,"reels":null,"feet":null,"sound":false,"credits":null,"notes":[],"line_start":18291,"line_end":18303,"source_text":"Training, Inc., 1949. 100 ft., b&w, \n16mm. \n\nSummary: The basic principles of \ntelevision. Explains the structure and \nfunction of the cathode ray tubes, and \nshows how the amplitude modulated carrier \nfor the picture and synchronizing pulses \nis combined with the frequency modulated \ncarrier for the accompanying sound, \n\n© DeForest's Training, Inc.; 15Jun49 \n(in notice: 1948); MP205. ","source_meta":{"name":"Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1950","url":"https://archive.org/details/catalogofcopyri341213libr","cite":"Internet Archive catalogofcopyri341213libr (OCR text)","file":"/root/projects/publicreel/data/raw/cce_third_series/1950_catalogofcopyri341213libr_djvu.txt"},"ia_items":[],"ia_lookup":[],"atlas":[]},"regs":[{"id":306463,"entry_id":287556,"reg_number":"MP205","series":4,"see_also":[],"reg_class":"MP","published":true,"claimant":"DeForest's Training, Inc","author":null,"deposit":null,"reg_date":"1949-06-15","part":null,"part_title":null,"source_line":18302,"raw":"nd function of the cathode ray tubes, and shows how the amplitude modulated carrier for the picture and synchronizing pulses is combined with the frequency modulated carrier for the accompanying sound © DeForest's Training, Inc.; 15Jun49 (in notice: 1948); MP205","flags":[],"status":"no-renewal-found","pd_date":"1978-01-01","reason":"no renewal entry found for 1976-1978 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025","match_kind":null,"match_confidence":null,"title_similarity":null,"renewals":[],"window":[1976,1977],"window_volumes":[{"year":1976,"ia_identifier":"1976motionpictur3301213libr"},{"year":1977,"ia_identifier":"1977motionpictur3311213libr"},{"year":1978,"ia_identifier":""}]}]}