Video recorder having an adapter to receive and modify video input signals for application to a cathode ray tube recording device

Claim 1

A video recorder for producing an immediate display of an image comprising: video means for scanning said image and converting said image into a series of input signals including video input signals and horizontal and vertical synchronizing pulse signals; video adapter means for receiving and modifying said series of input signals including a summing junction, first pulse amplifying means for receiving said horizontal synchronizing pulse signals, second pulse amplifying means for receiving said vertical synchronizing pulse signals, and blanking means; means connecting output means of said first pulse amplifying means, output means of said second pulse amplifying means, video output means of said video means and output means of said blanking means to said summing junction; recording apparatus means arranged to receive said modified series of input signals including a cathode ray tube means, means connecting an output of said summing junction to said cathode ray tube means, means connecting output means of said first and second pulse amplifying means to said cathode ray tube means, having a face plate upon which said modified series of input signals is displayed; means connecting input means of said blanking means to said video means for receiving vertical synchronizing pulse signals, said blanking means producing an output signal for every alternate vertical synchronizing pulse signal, said output signal of said blanking means blanking said cathode ray tube means; a recording medium passing over said face plate of said cathode ray tube said recording medium being responsive to said modified series of input signals displayed upon said face plate for recording said displayed image thereon; said pulse amplifying means including gating means respectively connected to receive said horizontal and vertical synchronizing pulse signals; resistance means; amplifier means having inputs connected through said resistance means to said gating means and outputs respectively connected to said recording apparatus capacitor means connected between said inputs and outputs of said amplifier means; and diode means connected across said resistance means, whereby said received horizontal and vertical synchronizing pulses are modified the final period to make the claim more clear, said output means of said first and second pulse amplifying means connected to the summing junction being the outputs of the gating means.