systems for adding into selected channels, radio frequency signals supplementary to the video signals received by the channel and without blanking out those video signals being displayed, through the use of radio frequency oscillator jammers and distribution modules and control software therefore, and requests that the mark be registered in

'ad':3 'blank':21 'channel':6,18 'control':40 'display':27 'distribut':37 'frequenc':8,33 'jammer':35 'mark':47 'modul':38 'oscil':34 'radio':7,32 'receiv':15 'regist':49 'request':44 'select':5 'signal':9,14,25 'softwar':41 'supplementari':10 'system':1 'therefor':42 'use':30 'video':13,24 'without':20

VIDEOMASK

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