1
Peter C Skerlos, Thomas J Zato, Frank C Templin: Television/telephone system with automatic dialing. Zenith Radio Corporation, June 26, 1984: US04456925 (299 worldwide citation)

A television receiver incorporating telephone interface circuitry permitting the viewer to remotely place outgoing calls by recalling a selected number from memory is disclosed. An infrared link is used for remotely answering incoming calls, initiating outgoing calls and programming a nonvolatile me ...


2
Frank C Templin, Thomas J Zato: Selective video reception control system. Zenith Radio Corporation, March 1, 1983: US04375651 (239 worldwide citation)

A system for controlling a channel/band selective microcomputer programmed indirect frequency synthesis tuner is disclosed. Separate groups of VHF, UHF or CATV channels are programmed by means of a key switch having various positions of engagement corresponding to individual groups of channels. Foll ...


3
Peter C Skerlos, Paul A Snopko, Frank C Templin, Thomas J Zato: Microcomputer-controlled television/telephone system and method therefore. Zenith Radio Corporation, October 26, 1982: US04356509 (221 worldwide citation)

A television receiver incorporating telephone interface circuitry permitting the viewer to not only answer incoming calls but also place outgoing calls by means of the television receiver is disclosed. An infrared link is used for remote control telephone answering and dial-out with a tuner-integrat ...


4
Walter S Ciciora: NTSC receiver useable with Teletext/Viewdata information. Zenith Radio Corporation, Thomas E Hill, November 11, 1980: US04233628 (211 worldwide citation)

A Teletext equipped NTSC television receiver system includes means for compressing the raster in the vertical direction in response to 625-line formatted Teletext signals to display normally overscanned horizontal lines on the television viewing screen. Thus 625-line formatted Teletext material may ...


5
Charles M Cox, William L Thomas: Teletext communication system with timed multipage local memory. Zenith Radio Corporation, Jack Kail, June 14, 1983: US04388645 (198 worldwide citation)

A teletext communications system comprises a transmitter, e.g. an orbiting satellite, transmitting multiple pages of a teletext encoded data service at selected times of the day, each teletext page including a first non-displayable auxiliary teletext data row defining a selected time interval and a ...


6
William L Thomas: Full-field teletext system with dynamic addressability. Zenith Radio Corporation, July 15, 1986: US04600921 (197 worldwide citation)

The present invention permits a teletext system operator to adjust subscriber access to service levels individually by adjusting a code at the head end station. A head-end station transmits a tier description page and a tier authorization page. The tier description page divides the data base into a ...


7
William L Thomas: Teletext interface for digital storage medium having synthetic video generator. Zenith Radio Corporation, Jack Kail, July 12, 1983: US04393376 (154 worldwide citation)

A teletext interface is coupled between a television receiver and a medium storing a plurality of digitally encoded signals each representing a selected text/graphics character intended for transmission as a corresponding synthetic video signal during the active scanning intervals of a television si ...


8
Melvin C Hendrickson: Stv Subscriber address system. Zenith Radio Corporation, September 29, 1981: US04292650 (136 worldwide citation)

A system for selectively addressing a plurality of television receivers, each of the receivers being identified by a unique n-bit address code, comprises means for transmitting a prefix code which is common to the p most significant bits of a group of address codes during a first horizontal scanning ...


9
Peter C Skerlos: CATV Service controller. Zenith Radio Corporation, July 17, 1984: US04461032 (123 worldwide citation)

A remotely located and controlled programming controller for a cable-compatible television receiver is disclosed. Cable head end-generated control signals are provided by wire to the cable TV controller for selectively enabling the reception of subscribed-to CATV channels by the television receiver. ...


10
Charles M Cox, William L Thomas: Special services teletext communications system. Zenith Radio Corporation, Jack Kail, July 12, 1983: US04393404 (110 worldwide citation)

A teletext communications system includes a transmitter cyclically transmitting a plurality of conventional teletext encoded data rows together with one or more teletext encoded special services data rows. A plurality of teletext decoder equipped receivers are operable for acquiring the conventional ...