NBS Technical Note, Issue 245U.S. Department of Commerce, National Bureau of Standards, 1964 - Physical instruments |
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FOREWORD S ABSTRACT - I. II . INTRODUCTION - ORIGINAL - DOCUMENT SCANNING VERSUS MICROFILM SCANNING- 1 Page iii - 1 1 III . FORMS - 1 3 - 5 - IV . PAPER HANDLING ❤ 1 7 V. SCANNING - - 15 VI . CONCLUSIONS AND RECOMMENDATIONS -45 ...
FOREWORD S ABSTRACT - I. II . INTRODUCTION - ORIGINAL - DOCUMENT SCANNING VERSUS MICROFILM SCANNING- 1 Page iii - 1 1 III . FORMS - 1 3 - 5 - IV . PAPER HANDLING ❤ 1 7 V. SCANNING - - 15 VI . CONCLUSIONS AND RECOMMENDATIONS -45 ...
Page 1
... scanner is assumed to be part of a transcribing information processor such as the FOSDIC ( Film Optical Scanning for Direct Input to Computers ) type of machine . Advantages and disadvan- tages of microfilm as against original document ...
... scanner is assumed to be part of a transcribing information processor such as the FOSDIC ( Film Optical Scanning for Direct Input to Computers ) type of machine . Advantages and disadvan- tages of microfilm as against original document ...
Page 2
... scanner capable of reading the original document without resorting to microfilm as an intermediate step . Specifically , these additional savings would come about by reduction in those operating costs directly associated with filming ...
... scanner capable of reading the original document without resorting to microfilm as an intermediate step . Specifically , these additional savings would come about by reduction in those operating costs directly associated with filming ...
Page 3
... scanner are recommended . II . ORIGINAL - DOCUMENT SCANNING VERSUS MICROFILM SCANNING In 1960 , the Bureau of the Census made use of the FOSDIC III device in the processing of the massive collection of information resulting from the ...
... scanner are recommended . II . ORIGINAL - DOCUMENT SCANNING VERSUS MICROFILM SCANNING In 1960 , the Bureau of the Census made use of the FOSDIC III device in the processing of the massive collection of information resulting from the ...
Page 4
... document scanner instead of a microfilm scanner should be advantageous , the designer of the document scanner faces more problems than if he were attempting to scan microfilm . Let us review some significant differences : 1 . An original ...
... document scanner instead of a microfilm scanner should be advantageous , the designer of the document scanner faces more problems than if he were attempting to scan microfilm . Let us review some significant differences : 1 . An original ...
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Common terms and phrases
adjustment amplifier application arrangement bandwidth bound books calibration camera cathode cathode-ray tube Census changes character charge pattern Class 2 systems components considerably constructed cost dark current deflecting means dependent diameter distortion document scanning drift dynode effective aperture electron beam Electronic Scanners element factor film flying spot focussing forms FOSDIC machines function high-speed hopper iconoscope illumination Image Defects image dissector image orthicon image section instability kinescope lens light level Light Transfer Characteristic manual manufacturers mark sensing marking guides maximum ment microfilm mirror moving Nipkow disk non-uniformity Optical Character Recognition original document scanner overall paper handler parameters phosphor photo-cathode photo-emissive surface photoconductive photomultiplier phototube pick-up device pick-up tubes printing problems processing reduced registration resolution response result scanning aperture scanning beam scanning position scene scheme sensitivity Serial Scan signal signal-to signal-to-noise ratio slewing rate specifications speed stability target techniques television pick-ups vacuum vidicon voltage