Single ramp film and tv receiver apparatus

Claim 2

Single ramp film apparatus for a flying spot scanner system employed with a television receiver comprising: synchronizing signal generating means; flying spot scanner means coupled to said generating means and including horizontal and vertical scanning circuitry, a flying spot scanner tube, a film scanning zone, and transport means for continuously moving a film of film frames through said film scanning zone; film frame detector means associated with said flying spot scanner means and providing a signal representative of a film frame in said film scanning zone; and vertical signal modification means coupled to said flying spot scanner means and including ramp signal generating means coupled to said film frame detector means and providing a substantially linear ramp signal having a slope substantially proportional to the rate of advancement of a film frame through sAid film scanning zone and coupled to said flying spot scanner tube and ramp signal altering means including logic circuitry responsive to signals from said synchronizing signal generating means and said film frame detector means and constant current generating means coupled to said logic circuitry and to said ramp signal generating means for effecting vertical alteration of said ramp signal in an amount substantially equal to the vertical height of a film frame, and at a period of vertical scanning retrace of said flying spot scanner tube whereby the scanning raster of the flying spot scanner tube is vertically varied in accordance with the vertical movement of a film frame through said film scanning zone.

Claim 3

The single ramp film apparatus of claim 1 including a signal processing means coupled to said flying spot scanner means for providing electrical signals representative of image information on said film, encoder means coupled to said signal processing means and said synchronizing signal generating means, and a transmitter means coupling said encoder means to an antenna for providing electrical signals suitable for television receiver reception and representative of image information on said film.

Claim 4

The single ramp film apparatus of claim 1 wherein said vertical signal modification means includes a ramp generating means in the form of a frequency to voltage converter coupled to said film frame detector, capacitor means coupling said converter to a potential reference level, and an alterable resistor and an operational amplifier shunted by a capacitor series connecting said converter to said flying spot scanner means.

Claim 5

The single ramp film apparatus of claim 1 wherein said constant current generator means is responsive to said logic circuitry for effecting a controlled discharge of said ramp generating means whereby a desired amount of vertical height modification of said ramp signal is attained during a period of vertical scan retrace of said flying spot scanner tube.

Claim 6

The single ramp film apparatus of claim 1 wherein said constant current generator includes an alterable impedance and an electron device series connected to a DC potential source and to said ramp signal generating means, said alterable impedance effecting magnitude control of said ramp signal alteration.

Claim 7

Single ramp film apparatus for a color television receiver and flying spot scanner system comprising: a color television receiver including an image display device and signal receiving and processing apparatus having a signal receiver, a sync signal separator means and horizontal and vertical drive circuitry associated with said display device; flying spot scanner means including a flying spot scanner tube, a film scanning zone associated with said tube, transport means for continuously moving a film of film frames through said film scanning zone, signal processing means associated with said scanner means, and means coupled to said horizontal and vertical drive circuitry of said receiver for effecting scanning of said flying spot scanner tube; film frame detector means associated with said flying spot scanner means and providing a signal representative of a film frame in said film scanning zone; vertical scan modification signal means including a ramp signal generating means coupled to said film frame detector means and a ramp signal altering means including logic circuitry coupled to said film frame detector means and said vertical drive circuitry of said receiver and constant current generating means coupled to said logic circuitry and to said ramp signal generating means for effecting vertical alteration of said ramp signal in an amount substantially equal to one film frame height; and switching means for selectively applying signals from said signal receiver of said television receiver and said signal processing means of said flying spot scanner means to said image reproducer to effect display of images derived from televised signals or film.

Claim 8

Single ramp film apparatus for a color television receiver and flying spot scanner system comprising: a color television receiver including an image display device and signal receiving and processing apparatus having a signal receiver, a sync signal separator means and horizontal and vertical drive circuitry associated with said display device; flying spot scanner means including a flying spot scanner tube, a film scanning zone associated with said tube, transport means for continuously moving a film of film frames through said film scanning zone, signal processing means associated with said scanner means, and means coupled to said horizontal and vertical drive circuitry of said receiver for effecting scanning of said flying spot scanner tube; film frame detector means associated with said flying spot scanner means and providing a signal representative of a film frame in said film scanning zone; vertical scan modification signal means including a ramp signal generating means coupled to said film frame detector means and a ramp signal altering means including logic circuitry coupled to said film frame detector means and said vertical drive circuitry of said receiver and constant current generating means coupled to said logic circuitry and to said ramp signal generating means for effecting vertical alteration of said ramp signal in an amount substantially equal to one film frame height; and switching means for selectively applying signals from said signal receiver of said television receiver and said signal processing means of said flying spot scanner means to said image reproducer to effect display of images derived from televised signals or film.

Claim 9

The Single ramp film apparatus of claim 6 wherein said ramp signal generating means includes a frequency to voltage converter coupled to said film frame detector means, a capacitor coupling said converter to a potential reference level, and a series connected alterable resistor and operational amplifier shunted by a capacitor and coupling said converter to said flying spot scanner tube of said flying spot scanner means.

Claim 10

The single ramp film apparatus of claim 6 wherein said ramp signal altering means of said vertical scan modification signal means includes logic circuitry coupled to said film frame detector means and said vertical drive circuitry of said television receiver and a constant current generator responsive to signals from said logic circuitry for effecting alteration of said ramp signal generating means to cause vertical adjustment of said ramp signal in an amount substantially equal to the vertical height of a film frame.

Claim 11

The single ramp film apparatus of claim 8 wherein said constant current generator is in the form of an electron device having an output electrode coupled to said ramp signal generating means, an input circuit coupled to said logic circuitry and a second input circuit coupled via an alterable impedance to a DC potential means.