Method of storing composite color signals

Claim 3

A method as claimed in claim 1, including the step of deriving the identification signal from a composite color signal, in accordance with a PAL-AB system, by utilizing the time difference between the vertical sync pulse and the last color synchronizing signal before blanking.

Claim 4

A method as claimed in claim 1, including the step of deriving the identification signal from a composite color signal in accordance with a PAL-AB system, by utilizing the time difference between the vertical sync pulse and the first color synchronizing signal after blanking.

Claim 5

A method as claimed in claim 1, including the step of synchronizing the identification signals in time with the field sync pulses. 5. A method as claimed in claim 1, wherein the identification signal is derived from the horizontal, vertical, and blanking impulses available in a PAL color television studio, which method includes the step of delaying the leading edge of the blanking impulse for three line periods time by line sync pulses, then time-matching said delayed impulse with the vertical sync pulse for coincidence, and generating a coincidence signal as the identification signal.

Claim 6

Apparatus for storing composite color signals, coded in accordance with the PAL-AB system, comprising: means operable for characterizing every fourth successive field by an identification signal and then employing said identification signal to control line and field synchronization of one composite color signal with another composite color signal; means operative for effecting agreement of the fields of both composite color signals with regard to their vertical, horizontal and color synchronizing signal components; a magnetic tape having color signals recorded in transverse tracks in related sequential order, with an identification signal recorded on the tape in time relation with regularly periodic ordered signals in said transverse tracks; a longitudinal reading head; means for moving said tape longitudinally with reference to said reading head; a source for a reference time signal; means for recording said identification signals from said track and comparing said signals timewise with a reference time signal from said source, to generate a difference signal; and amplifier means responsive to said difference signal to control the means for moving said tape to control the speed of motion of said tape.

Claim 7

Apparatus for storing composite color signals, coded in accordance with the PAL-AB system, comprising: means operable for characterizing every fourth successive field by an identification signal and then employing said identification signal to control line and field synchronization of one composite color signal with another composite color signal; means operative for effecting agreement of the fields of both composite color signals with regard to their vertical, horizontal and color synchronizing signal components; a magnetic tape having color signals recorded in transverse tracks in related sequential order, with an identification signal recorded on the tape in time relation with regularly periodic ordered signals in said transverse tracks; a longitudinal reading head; means for moving said tape longitudinally with reference to said reading head; a source for a reference time signal; means for recording said identification signals from said track and comparing said signals timewise with a reference time signal from said source, to generate a difference signal; and amplifier means responsive to said difference signal to control the means for moving said tape to control the speed of motion of said tape.

Claim 8

Apparatus as in claim 6, including: further, means for reading the signal records in said transverse tracks, including a plurality of transverse reading heads; a rotatable wheel supporting said transverse reading heads for movement transverse to said tape and linearly relative to said transverse signal records; driving motor means for said wheel; and a longitudinal track on said tape containing said identification signals recorded in said track, and said track containing additional control signals recorded to be detected by said longitudinal reading head for controlling said motor means for driving said wheel.

Claim 9

Apparatus as in claim 7, including: further, means constituting auxiliary fine control means for controlling the longitudinal tape-moving means; and means responsive to said difference signals for controlling said auxiliary fine control means for controlling said tape-moving means.

Claim 10

Apparatus for storing composite color signals coded in accordance with the PAL-AB system, comprising: means for recording line signals for a field, with designated fields in sequence, and for characterizing every fourth successive field by an identification signal derived from a composite color signal; and means responsive to said identification signal to control horizontal and vertical synchronization with another composite color signal, and to establish agreement of the fields of both composite color signals with regard to their vertical, horizontal and color synchronizing signals.

Claim 11

Apparatus for storing composite color signals coded in accordance with the PAL-AB system, comprising: means for recording line signals for a field, with designated fields in sequence, and for characterizing every fourth successive field by an identification signal derived from a composite color signal; and means responsive to said identification signal to control horizontal and vertical synchronization with another composite color signal, and to establish agreement of the fields of both composite color signals with regard to their vertical, horizontal and color synchronizing signals.

Claim 12

Apparatus as claimed in claim 9, including: means responsive to the time difference between the vertical sync pulse and the last color synchronizing signal after blanking for deriving the identification signal from a composite color signal in accordance with a PAL-AB system.

Claim 13

Apparatus as claimed in claim 9, including: means responsive to the time difference between the vertical sync pulse and the first color synchronizing signal after blanking for deriving the identification signal from a composite color signal in accordance with a PAL-AB system.

Claim 14

Apparatus as claimed in claim 9, including: means for blanking out the color synchronizing signal from the composite color signal; means for separating out the synchronizing signal; means for producing vertical and horizontal sync pulses from said synchronizing signal; a bistable vibrator; means operable for deriving a pulse from said synchronizing signal and for directing said pulse to operate said bistable vibrator; means for extracting a line sync pulse from the composite color signal and for applying said line sync pulse to restore said bistable vibrator; a monostable vibrator connected to be triggered by pulses from said bistable vibrator, for producing an output impulse having a duration of half a line; and a coincidence gate responsive to said output impulse pulse from said monostable vibrator and to said vertical sync pulse from said synchronizing signal for producing an identification signal.

Claim 15

Apparatus as claimed in claim 9, including: means for blanking out the color synchronizing signal from the composite color signal; means for separating out the synchronizing signal; means for producing vertical and horizontal sync pulses from said synchronizing signal; a bistable vibrator; means operable for deriving a pulse from said synchronizing signal and for directing said pulse to operate said bistable vibrator; means for extracting a line sync pulse from the composite color signal and for applying said line sync pulse to restore said bistable vibrator; means for receiving and integrating pulses from said bistable vibrator, to produce an integrated pulse; counting means for receiving said integrated pulse and providing a delay of three line periods in outputting said integrated pulse; and means for supplying said output integrated pulse and said vertical sync pulse to said coincidence gate to obtain said identification signal.

Claim 16

Apparatus as in claim 9, including: means for blanking out the color synchronizing signal from the composite color signal; means for separating out the synchronizing signal; means for producing vertical and horizontal sync pulses from said synchronizing signal; a bistable vibrator; a coincidence gate; means for applying said vertical and said horizontal sync pulses to said gate to produce an output pulse; counting means for receiving a line sync pulse and said coincidence gate output pulse to produce a delayed pulse; a second gate; means for applying the color synchronizing pulse to said second gate and for applying said delayed pulse from said counting means to open said second gate to produce an output pulse; and means for applying said output pulse from said second gate and said delayed pulse from the counting means, both, to said bistable vibrator to operate and to restore said bistable vibrator to produce an output identification signal.

Claim 17

Apparatus as claimed in claim 9, including: means for recording one set of color signals in transverse tracks on a moving magnetic tape; means for recording identification signals on said tape; and means for time-comparing identification signals on the tape with corresponding signals on another color signal to produce a differential control signal for controlling the running speed of the tape.

Claim 18

Apparatus as claimed in claim 15, including: means for driving a wheel transversely movable of said tape; magnetic heads on said wheel; means for driving the tape longitudinally; all said drives being controlled from a control signal recorded longitudinally on said magnetic tape, said tape also carrying identification signals recorded on longitudinal tracks.