Television systems composed of telephone sets, video cassette recorders, video cassette players and digital video disc players and speakers for downloading, displaying and processing data relating to various television programs and outputting commands for changing television channels or recording on an electronic medium on the basis of this data

'basi':46 'cassett':8,11 'chang':35 'channel':37 'command':33 'compos':3 'data':25,49 'digit':14 'disc':16 'display':22 'download':21 'electron':42 'medium':43 'output':32 'player':12,17 'process':24 'program':30 'record':9,39 'relat':26 'set':6 'speaker':19 'system':2 'telephon':5 'televis':1,29,36 'various':28 'video':7,10,15

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