Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1969-04-07
1977-10-11
Wilbur, Maynard R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
250203CT, H04N 718
Patent
active
040539296
ABSTRACT:
The tracker tracks on a center of contrast on a selected target while trang gates are adjusted automatically to fit the target contrast area's shape and size. The appropriate bright or dark contrast detector is adjusted to allow discrimination of the target contrast from its background, thus allowing a tracking window to encompass the selected contrast area. Orthogonal error signals are provided for servoing a vidicon camera to maintain the viewed field centered on the target.
REFERENCES:
patent: 3257505 (1966-06-01), Van Wechel
patent: 3507991 (1970-04-01), Scotchie et al.
Collins, III Robert H.
Steele William J.
Thomas, Jr. Albert L.
Blum T. M.
Edelberg Nathan
Gibson Robert P.
Sims Robert C.
The United States of America as represented by the Secretary of
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