Method and apparatus for variable video magnification

Details Method and apparatus for variable video magnification Method and apparatus for variable video magnification

1994-06-20

1995-10-24

Razavi, Michael T.

Television

Special applications

Aid for the blind

348 63, 348 64, H04N 700, H04N 5225

Patent

active

054614163

ABSTRACT:
A video camera including a stopped down lens diameter. An opaque material with a small aperture size is placed over the camera lens. The small aperture allows the user to vary the image size of the object to be viewed by moving the camera toward or away from the object. At the same time the blur circle diameter is maintained within acceptable user limits.

REFERENCES:
patent: 2582728 (1952-01-01), Walker
patent: 4581648 (1986-04-01), Ganther
patent: 5046163 (1991-09-01), Priest et al.

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