Title: Digital convergence of multiple image projectors

Abstract: In a scanned multiple image display device a plurality of individual projectors produces a single composite image by optically combining individual projector outputs. The individual images must be converged with each other to produce an acceptable display. A digital computer is used to generate and store words that correspond to the required convergence correction for individual projectors. The stored words are read out of the computer in accordance with projector scanning timing and, after being converted to analog form, are used to correct the scanning to produce convergence.

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Inventors: Austefjord, Harald M. (San Jose, CA, US)

Application Number: 508279
Filing Date: 1974-09-23
Publication_date: 1976-03-09
Assignee: Aeronutronic Ford Corporation (Blue Bell, PA)
Primary Class(es): 348/747 315/368.12
Other Classes:
US Patent Ref:

2654854	Oct, 1953	Seright	315/370.
2989584	Jun, 1961	Mengle	358/60.
3115544	Dec, 1963	Marley	358/60.
3648097	Mar, 1972	Merryman	315/367.
3714496	Jan, 1973	Horvath	315/367.
3740608	Jun, 1973	Manber et al.	315/370.

Other Refs:
Primary Examiner: Richardson, Robert L.
Assistant Examiner:
Attorney: Sanborn; Robert D.