David E Wachob: Method and apparatus for providing demographically targeted television commercials. General Instrument Corporation, Barry R Lipsitz, October 13, 1992: US05155591 (797 worldwide citation)

Different commercial messages are broadcast to different demographically targeted audiences in a cable television system or the like. A first television channel contains television programs and periodic commercial messages. A second television channel contains alternate commercial messages. Demograp ...

David E Wachob: Selection of compressed television signals from single channel allocation based on viewer characteristics. General Instrument Corporation, Barry R Lipsitz, July 27, 1993: US05231494 (371 worldwide citation)

A plurality of television signals are transmitted and selectively received on a single television channel allocation. Headend apparatus compresses a set of television signals, such as a main program signal and a plurality of different demographically targeted commercials. The plurality of compressed ...

David E Wachob: CATV subscriber apparatus with intelligent remote control. General Instrument Corporation, Barry R Lipsitz, September 3, 1991: US05046093 (216 worldwide citation)

Subscriber apparatus for a cable television system or the like comprises a converter/descrambler and a programmable remote control. All authorization data for premium services and features a subscriber is entitled to receive are stored in the remote control. Program/interface apparatus is provided t ...

Harold M Krisbergh, David E Wachob, Joseph E Augenbraun, Jae Hea Edward Lee: Access system and method for providing interactive access to an information source through a television distribution system. World Gate Communications, Akin Gump Strauss Hauer & Feld L, December 7, 1999: US05999970 (157 worldwide citation)

An access system and method for providing interactive access to an information source through a television distribution system is disclosed. The distribution system includes a television distribution network, headend distribution equipment at the headend of the distribution network, and a plurality ...

Harold M Krisbergh, David E Wachob: Portable telephone handset with remote control. General Instrument Corporation, Barry R Lipsitz, August 11, 1992: US05138649 (116 worldwide citation)

A remote control for one or more appliances and a telephone handset are combined into a single unit. A common keypad is used for both remote control and telephone functions. An appliance control signal is generated in response to the actuation of at least one of the keypad keys. The appliance contro ...

David E Wachob: Switchable signal source module for use with cable television converter. General Instrument Corporation, Kramer Brufsky & Cifelli, November 8, 1988: US04783846 (98 worldwide citation)

Remotely switchable signal source modules are mounted to a cable television converter to enable a viewer to select between alternate television signal sources. Power for the module is provided via the converter's RF input terminal, which mates with a corresponding terminal on the module. An RF bypas ...

Hal M Krisbergh, Joseph A Augenbraun, Randell E Jesup, Randall J Gort, Maire D Reavy, Navneeth Kannan, Whitney D Blackmon, Richard W Westerfer, David E Wachob: Videophone system and method. Worldgate Service, Jones Tullar & Cooper P C, July 3, 2007: US07239338 (59 worldwide citation)

System and method for providing personal videotelephony in which a plurality of videophones are connected to a communications network that is configured for transmitted video and audio communications. Each of the videophones typically includes a camera, display device, telephone keypad, speaker and ...

David E Wachob, Hal M Krisbergh: Residential time reference system. Allan Jacobson, August 2, 1994: US05334975 (59 worldwide citation)

A method and provides for transmitting a time reference throughout a residence or other facility for use by appliances operating within the facility. A time reference is received from the headend of a cable television (CATV) system at the subscriber converter and is retransmitted to set the internal ...

David E Wachob: Secure video distribution system. General Instrument Corporation, Hopgood Calimafde Kalil Blaustein & Judlowe, June 20, 1989: US04841569 (16 worldwide citation)

A video distribution system (e.g., CATV or MATV) employs at least one channel having a reception-defeating jamming signal which changes frequency periodically or, preferably, randomly. The signal originating head end distributes information characterizing the operative frequency of the jamming wave.

David E Wachob, William H Berkman: Dynamically addressable communications system and method. William H Berkman, Woodcock Washburn Kurtz Mackiewicz & Norris, July 29, 1997: US05652574 (4 worldwide citation)

A dynamically-addressable communications system provides either a list or set of dynamic addresses to selected receivers for broadcasting information packets from a transmission source to the selected receivers. Each dynamic address provided in the set is associated with a particular information pac ...