Linear film scanner operable at different line rates

Details Linear film scanner operable at different line rates Linear film scanner operable at different line rates

1991-06-12

1992-09-08

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 11, H04N 911

Patent

active

051463210

ABSTRACT:
A film scanner operable according to dual line standards includes red, green, and blue linear array sensors separated by a line spacing that constitutes substantially integral first and second multiples of the line spacings of the respective line standards. More particularly, in 1125 and 1250 line television standards, the linear arrays are spaced such that the distance is substantially equivalent to 9 lines of the 1125 line standard and 10 lines of the 1250 line standard. The output signal from each linear array is registered to the same line for each standard by inserting separable sets of line delays into the signal paths from two of the linear arrays. The separable delays correspond to the first and second multiples of the respective standards. By switching between the respective sets of delays, an output signal is developed for a selected line standard.

REFERENCES:
patent: 4051531 (1977-09-01), Baldwin
patent: 4733299 (1988-03-01), Glenn
patent: 4868657 (1989-09-01), Samuels
patent: 4876596 (1989-10-01), Faroudja
patent: 4881125 (1989-11-01), Krause
patent: 5023711 (1991-06-01), Erhardt
patent: 5045932 (1991-09-01), Sharman
Sakata, H. et al., "Television Standards Converter Using Delay-line System," NHK Laboratories Note, Aug. 1967.

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