U.S. patents available from 1976 to present.
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...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.

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Class 725/144 - Headend


Subclass of Class 725 - Interactive video distribution systems
Definition: Subject matter comprising means or steps for a central
No. of patents: 173
Last issue date: 02/08/2011


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NumberTitleIssue Date
4348691Master antenna subscription television system and the like
This disclosure is concerned with simplification of customer TV decoders for scrambled television signals fed from a master antenna system or the like, by novel head-end decoding and simultaneous scrambled STV transmission along the distribution cable to ...
09/07/1982
4345273Broad band switching system
The exemplary embodiment may be used for television (TV) signals and, if desired, also for radio, digital telephone, picture screen text and/or television telephone signals. For the reduction of the circuit-technical outlay of the actual broad band switch...
08/17/1982
4329675System for automatically substituting television signals at a head station for a cable network
A system for automatically substituting television signals from different sources at a station for applying signals to a cable TV network. The substitution system (10) includes at least one switch (9) inserted between the cable network and the outputs of ...
05/11/1982
4322745Television signal scrambling method for CATV system
A television signal scrambling and descrambling method and apparatus for use with a community antenna television system in which the scrambling mode employed is changed from time to time so that one cannot illegally receive the transmitted signals over a ...
03/30/1982
4247106System arrangement for distribution and use of video games
An improved system arrangement for distributing and permitting use of an ensemble of program controlled television games includes head end apparatus for impressing an array of game-regulating programs onto an electronic distribution system, e.g., by time ...
01/27/1981
4246608Method for measuring crossview between two channels in a wired television broadcasting system
A method for measuring crossview between channels in a wired television broadcasting system is described in which a pseudo random binary pulse sequence signal is applied to a first channel, and the signal on a second channel is correlated with an identica...
01/20/1981
4153847Logic circuits
A logic circuit is described for controlling a plurality of solid state switches in a wired broadcasting system. The circuit is arranged to distinguish between dialling and reset pulse signals applied to an input, and has a plurality of outputs to which t...
05/08/1979
4142156Control signal apparatus for CATV system
In a cable or CATV system consisting of a central station with a television transmitter connected via a television transmission cable to a plurality of remote stations each with a television receiver, there is provided apparatus for signalling between the...
02/27/1979
4115662One way data transmission system
There is provided a one-way data transmission system wherein a transmitter station transmits in the form of data packs data from a plurality of channels, the said packs being time multiplexed. One channel amongst the plurality of channels is allotted to transm...
09/19/1978
4106060Electronic mail box
An electronic mail box includes an entry slot for receiving a letter to be transmitted electronically to a remote point, an optical reader for converting the letter text to electronic signals, and a keyboard for receiving the address of the addressee. The...
08/08/1978
4062043Apparatus for distributing light signals among a plurality of receivers
An optical transmitter, a plurality of optical receivers and light wave guides operatively interconnecting the transmitter and receivers. In one embodiment the transmitter has a light emission surface in the order of a plurality of light wave guide cross-...
12/06/1977
3944742Burst frequency shift keying data communication system
A communications system for transmission of low density digital data from a plurality of transmitters to a common receiver. It is a burst-mode frequency shift keying (FSK) communication system useable with a master antenna television (MATV) system that mi...
03/16/1976
3936594Secure television system
A secure system for television transmission wherein a television signal is transmitted on one frequency channel and a composite high fidelity stereophonic audio signal is transmitted on a separate unrelated frequency channel. Unauthorized reception of the...
02/03/1976
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