Flying spot scanner for continuously advanced film

Claim 2

In a system for developing a composite color television signal from a film of film frames continuously advanced through a film scanning zone of a flying spot scanner system wherein signals representative of film images are synchronized, encoded, and transmitted, apparatus for effecting modulation of vertical film scanning in synchronization with vertical color television signals comprising: vertical scan means providing vertical color television scanning signals; film frame detector means associated with said continuously advancing film of film frames and providing a signal representative of the positional location of a film frame in said film scanning zone; and vertical scan modification signal development means including switching means coupled to said vertical scan and film frame detector means, gating means coupled to said switching and film frame detector means, and dual ramp signal development means coupled to said gating means whereby said dual ramp signals vary at a rate substantially equal to the rate of film frame advancement through said film scanning zone and are selectively switched in accordance with the positional location of a film frame in said film scanning zone.

Claim 3

The apparatus of claim 1 wherein said switching means is of a form to effect switching of said ramp signals in response to signals from said film frame detector means and said vertical scan means whereby said vertical scan modification signal and said vertical scan signal have substantially identical periods of retrace.

Claim 4

The apparatus of claim 1 wherein said gating means includes a first gating means coupling said switching means and said film frame detector means to said dual ramp signal development means and a second gating means coupled to said switching means and film frame detector means and coupling said dual ramp signal development means to a signal combining network whereby said switching means selectively initiates said dual ramp signals and selectively switches application of said dual ramp signals to said signal combining network.

Claim 5

The apparatus of claim 1 wherein said dual ramp signal development means provide signals in the form of analog information.

Claim 6

Composite color television signal development apparatus comprising: sync pulse signal generating means; flying spot scanner means including a scanner tube, means for continuously advancing a film of film frames through a film scanning zone, and signal processing means providing a signal representative of image information on said film; horizontal and vertical deflection means coupled to said sync pulse signal generating means; encoder means coupled to said sync pulse signal generating means and said signal processing means for providing synchronized information derived from said film; transmitter means coupling said encoder means to an antenna for radiating a composite color television signal; film frame detector means coupled to said means for continuously advancing a film of film frames and providing a signal representative of location of a film frame in said film scanning zone; vertical scan modification signal development means including a switching means and a pair of ramp signal development means coupled to said vertical deflection and said film frame detector means and selectively providing a ramp signal in the form of analog information derived from said pair of ramp signal development means; and signal combining network means coupled to said vertical deflection and said vertical scan modification signal development means and providing a combined vertical scan and vertical scan modification signal for application to said scanner tube to modulate vertical scanning in accordance with film movement.

Claim 7

Composite color television signal development apparatus comprising: sync pulse signal generating means; flying spot scanner means including a scanner tube, means for continuously advancing a film of film frames through a film scanning zone, and signal processing means providing a signal representative of image information on said film; horizontal and vertical deflection means coupled to said sync pulse signal generating means; encoder means coupled to said sync pulse signal generating means and said signal processing means for providing synchronized information derived from said film; transmitter means coupling said encoder means to an antenna for radiating a composite color television signal; film frame detector means coupled to said means for continuously advancing a film of film frames and providing a signal representative of location of a film frame in said film scanning zone; vertical scan modification signal development means including a switching means and a pair of ramp signal development means coupled to said vertical deflection and said film frame detector means and selectively providing a ramp signal in the form of analog information derived from said pair of ramp signal development means; and signal combining network means coupled to said vertical deflection and said vertical scan modification signal development means and providing a combined vertical scan and vertical scan modification signal for application to said scanner tube to modulate vertical scanning in accordance with film movement.

Claim 8

The apparatus of claim 5 wherein said vertical scan modification signal development means includes a first gating means for selecting and initiating ramp signal development by said dual ramp signal development means and a second gating means responsive to said switching means for selecting and applying a ramp signal developed by one of said dual ramp signal development means.

Claim 9

The apparatus of claim 5 wherein said switching means responds to signals from said film frame detector means and said vertical deflection means to effect switching of said dual ramp signal development means in a manner such that the retrace period of signals of said vertical deflection means and said vertical scan modification signal development means are suBstantially identical.

Claim 10

The apparatus of claim 5 wherein signals provided by said dual ramp signal development means have a magnitude varying at a rate substantially equal to the advancement rate of a film frame through said film scanning zone of said flying spot scanner means.