1
Mark W Bendig: Viewdata system and apparatus. OCLC Online Computer Library Center Incorporated, Mueller and Smith, May 29, 1984: US04451701 (216 worldwide citation)

A viewdata system and decoder apparatus for providing interactive communication between a host computer and a consumer which utilizes, without modification, a conventional television receiver. The system utilizes telephonic communication, the handset of a telephone being positioned upon an acoustic ...


2
Mark W Bendig: Audio-enhanced videotex system. OCLC Online Computer Library Center Incorporated, Mueller and Smith, April 8, 1986: US04581484 (79 worldwide citation)

A system and apparatus for providing information exchange between a host computer facility and a remotely located user terminal. The host facility includes an audio memory under the control of a host computer which, in response to requests from the user facility is actuated to transmit audio informa ...