|
CA246437A
(en)
|
|
1925-01-27 |
F. Grahame Dallas |
Deflecting plate
|
|
US2612553A
(en)
|
1947-12-27 |
1952-09-30 |
John H Homrighous |
Television system
|
|
US2826828A
(en)
*
|
1951-08-22 |
1958-03-18 |
Hamilton Sanborn |
Variable difficulty devices
|
|
US2777901A
(en)
*
|
1951-11-07 |
1957-01-15 |
Leon E Dostert |
Binaural apparatus for teaching languages
|
|
US2908767A
(en)
|
1954-06-18 |
1959-10-13 |
Mc Graw Edison Co |
Juke box and recordation-transfer machine therefor
|
|
US2921385A
(en)
*
|
1955-04-25 |
1960-01-19 |
Hamilton Sanborn |
Remote question-answer apparatus
|
|
US3008000A
(en)
|
1958-09-11 |
1961-11-07 |
Charles A Morchand |
Action-reaction television system
|
|
US3020360A
(en)
*
|
1959-01-29 |
1962-02-06 |
Gen Dynamics Corp |
Pronunciary
|
|
GB940092A
(en)
|
1961-06-23 |
1963-10-23 |
Smith & Sons Ltd S |
Improvements in or relating to apparatus for sound reproduction
|
|
US3221098A
(en)
|
1962-08-15 |
1965-11-30 |
Eugene S Feldman |
Multiple lingual television in a multiplex broadcast system
|
|
US3263027A
(en)
*
|
1962-12-11 |
1966-07-26 |
Beltrami Aurelio |
Simultaneous bilateral televideophonic communication systems
|
|
BE652172A
(de)
|
1963-08-22 |
|
|
|
|
US3245157A
(en)
*
|
1963-10-04 |
1966-04-12 |
Westinghouse Electric Corp |
Audio visual teaching system
|
|
GB1070864A
(en)
|
1963-12-10 |
1967-06-07 |
Gabor Kornel Tolnai |
An arrangement in sound reproducing appliances having tapelike sound recording carriers, particularly for teaching purposes
|
|
US3255536A
(en)
|
1963-12-12 |
1966-06-14 |
Tutortape Lab Inc |
Selective programmed information receiving and responding system
|
|
US3284923A
(en)
|
1964-07-16 |
1966-11-15 |
Educational Res Associates Inc |
Teaching machine with programmed multiple track film
|
|
US3273260A
(en)
|
1964-10-06 |
1966-09-20 |
Tutortape Lab Inc |
Audio-visual communication systems and methods
|
|
US3387084A
(en)
|
1964-11-23 |
1968-06-04 |
Mc Donnell Douglas Corp |
Color television data display system
|
|
GB1147603A
(en)
|
1965-06-15 |
1969-04-02 |
Mullard Ltd |
Improvements in or relating to television transmission systems
|
|
US3366731A
(en)
*
|
1967-08-11 |
1968-01-30 |
Comm And Media Res Services In |
Television distribution system permitting program substitution for selected viewers
|
|
US3538621A
(en)
|
1967-11-16 |
1970-11-10 |
Wataru Mayeda |
Teaching apparatus
|
|
US3484950A
(en)
|
1968-06-12 |
1969-12-23 |
Educational Testing Service |
Teaching machine
|
|
BE792678Q
(fr)
|
1968-06-20 |
1973-03-30 |
Koos Eugenia M |
Systeme de television educatif
|
|
FR1584571A
(de)
|
1968-06-28 |
1969-12-26 |
|
|
|
US3602582A
(en)
|
1968-09-11 |
1971-08-31 |
Ngo Torricelli |
Triptych cinematographic system
|
|
US3643217A
(en)
*
|
1968-10-10 |
1972-02-15 |
James R Morphew |
Automatic visual aid control unit
|
|
US3566482A
(en)
*
|
1968-10-24 |
1971-03-02 |
Data Plex Systems |
Educational device
|
|
US3575861A
(en)
*
|
1969-01-29 |
1971-04-20 |
Atlantic Richfield Co |
Mineral oil containing surface active agent
|
|
BE755561A
(fr)
*
|
1969-09-09 |
1971-02-15 |
Sodeteg |
Perfectionnements aux machines a enseigner comportant notammentun projecteur d'images
|
|
JPS505886B1
(de)
*
|
1970-03-24 |
1975-03-08 |
|
|
|
CH514904A
(de)
|
1970-05-26 |
1971-10-31 |
Meier Hans Werner |
Lehrautomat
|
|
US3708891A
(en)
*
|
1971-01-18 |
1973-01-09 |
Oregon Res Inst |
Spoken questionnaire method and apparatus
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US3730980A
(en)
*
|
1971-05-24 |
1973-05-01 |
Television Communications Corp |
Electronic communication apparatus for selectively distributing supplementary private programming
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US3725571A
(en)
*
|
1971-06-21 |
1973-04-03 |
Westinghouse Electric Corp |
Multiplex video transmission system
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|
US3725674A
(en)
*
|
1971-07-08 |
1973-04-03 |
Motorola Inc |
Impulse noise blanker including broadband level sensing
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|
US3763577A
(en)
|
1972-01-26 |
1973-10-09 |
D Goodson |
Electronic teaching aid
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US3814841A
(en)
|
1972-03-16 |
1974-06-04 |
Telebeam Corp |
Communication system with premises access monitoring
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US3757225A
(en)
|
1972-03-16 |
1973-09-04 |
Telebeam Corp |
Communication system
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US3763377A
(en)
|
1972-04-10 |
1973-10-02 |
A Weston |
Random cycle load switch
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US3988528A
(en)
|
1972-09-04 |
1976-10-26 |
Nippon Hoso Kyokai |
Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels
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JPS5237896B2
(de)
*
|
1972-09-04 |
1977-09-26 |
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US3833760A
(en)
|
1973-02-27 |
1974-09-03 |
Ferranti Ltd |
Television systems
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US3916092A
(en)
|
1973-05-25 |
1975-10-28 |
Westinghouse Electric Corp |
Transmission system for audio and coding signals in educational tv
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US3857999A
(en)
|
1973-05-25 |
1974-12-31 |
Westinghouse Electric Corp |
Converter for a line shared educational tv system
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|
US3825674A
(en)
|
1973-05-25 |
1974-07-23 |
Westinghouse Electric Corp |
Educational tv branching system
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US3849594A
(en)
|
1973-05-25 |
1974-11-19 |
Westinghouse Electric Corp |
Multi-picture tv system with audio and doding channels
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US3902007A
(en)
|
1973-06-26 |
1975-08-26 |
Westinghouse Electric Corp |
Audio and video plural source time division multiplex for an educational tv system
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US4044380A
(en)
|
1973-12-17 |
1977-08-23 |
Westinghouse Electric Corporation |
Encoder and constructed answer system for television
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|
US4040088A
(en)
|
1974-01-10 |
1977-08-02 |
Rca Corporation |
Adaptor for inter-relating an external audio input device with a standard television receiver, and an audio recording for use therewith
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|
US3947972A
(en)
*
|
1974-03-20 |
1976-04-06 |
Freeman Michael J |
Real time conversational student response teaching apparatus
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US4199781A
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*
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1974-08-20 |
1980-04-22 |
Dial-A-Channel, Inc. |
Program schedule displaying system
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US3991266A
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1974-09-03 |
1976-11-09 |
Sanders Associates, Inc. |
Dual image television
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JPS51115718A
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*
|
1975-02-24 |
1976-10-12 |
Pioneer Electronic Corp |
Bi-directional catv system
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US4034990A
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|
1975-05-02 |
1977-07-12 |
Sanders Associates, Inc. |
Interactive television gaming system
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USRE32776E
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1976-06-23 |
1988-11-01 |
IDR, Incorporated |
Piggy back row grabbing system
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US4078316A
(en)
*
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1976-06-24 |
1978-03-14 |
Freeman Michael J |
Real time conversational toy
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DE2807986A1
(de)
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1978-02-22 |
1979-08-30 |
Hertz Inst Heinrich |
Anlage fuer interaktives kabelfernsehen
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US4264924A
(en)
*
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1978-03-03 |
1981-04-28 |
Freeman Michael J |
Dedicated channel interactive cable television system
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US4333152A
(en)
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1979-02-05 |
1982-06-01 |
Best Robert M |
TV Movies that talk back
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US4305131A
(en)
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1979-02-05 |
1981-12-08 |
Best Robert M |
Dialog between TV movies and human viewers
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US4569026A
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1979-02-05 |
1986-02-04 |
Best Robert M |
TV Movies that talk back
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EP0016314A1
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1979-02-05 |
1980-10-01 |
Best, Robert MacAndrew |
Verfahren und Vorrichtung zum gesprochenen Dialog zwischen einem Videobild und einem Menschen
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US4445187A
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*
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1979-02-05 |
1984-04-24 |
Best Robert M |
Video games with voice dialog
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FR2448821A1
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1979-02-12 |
1980-09-05 |
Telediffusion Fse |
Procede et systeme d'incrustation d'images en television en couleurs
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US4264925A
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*
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1979-08-13 |
1981-04-28 |
Michael J. Freeman |
Interactive cable television system
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JPS5647181A
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*
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1979-09-26 |
1981-04-28 |
Pioneer Electronic Corp |
Periodic electric-power-source turning-off device of terminal device of catv system
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US4422105A
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1979-10-11 |
1983-12-20 |
Video Education, Inc. |
Interactive system and method for the control of video playback devices
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US4862268A
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1980-03-31 |
1989-08-29 |
General Instrument Corporation |
Addressable cable television control system with video format data transmission
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EP0049280B1
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1980-03-31 |
1990-10-31 |
General Instrument Corporation |
Fernseh übertragungsanordnung zum übertragen von datensignalen
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1980-08-29 |
1982-11-30 |
Warner Amex Cable Communications Inc. |
Security terminal for use with two-way interactive cable system
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1980-10-21 |
1982-05-25 |
Iri, Inc. |
Cable television with controlled signal substitution
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1980-12-01 |
1983-04-26 |
Adams-Russell Co., Inc. |
Selective viewing
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1981-09-11 |
1984-04-24 |
Machine Intelligence Corporation |
Data modifier apparatus and method for machine vision systems
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1981-11-03 |
1990-10-23 |
The Personalized Mass Media Corporation |
Signal processing apparatus and methods
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1981-11-03 |
1987-09-15 |
Harvey John C |
Signal processing apparatus and methods
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1981-11-25 |
1983-08-16 |
Rca Corporation |
Stereophonic bilingual signal processor
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1981-12-14 |
1997-11-25 |
Levine; Michael R. |
System for unattended recording of video programs by remote control code transmitter module which receives user selections from a personal computer
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1982-03-15 |
1985-05-07 |
Satellite Business Systems |
Teleconferencing method and system
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1982-04-23 |
1986-05-27 |
Freeman Michael J |
Dynamic audience responsive movie system
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1982-06-02 |
1986-07-08 |
Digital Equipment Corporation |
Interactive computer-based information display system
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1982-06-22 |
1985-03-26 |
Freeman Michael J |
One way interactive multisubscriber communication system
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1982-06-24 |
1987-05-12 |
Cooper J Carl |
Apparatus and method for receiving audio signals transmitted as part of a television video signal
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1982-11-01 |
1986-02-18 |
Sanders Associates, Inc. |
Video disc program branching system
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1983-01-24 |
1985-11-26 |
Media Transference International |
Single channel split-sound receiver for use with television set
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1983-05-04 |
1986-10-07 |
Stimutech, Inc. |
Method and apparatus for generating subliminal visual messages
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1983-05-19 |
1986-11-25 |
Westinghouse Electric Corp. |
Remote control switching of television sources
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JPS59226576A
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1983-06-08 |
1984-12-19 |
Mitsubishi Electric Corp |
テレビジヨン受信機のプリンタ装置
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US4566030A
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1983-06-09 |
1986-01-21 |
Ctba Associates |
Television viewer data collection system
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1983-08-11 |
1986-03-04 |
Tocum, Incorporated |
Remote hub television and security systems
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1983-10-03 |
1985-07-16 |
Broadband Technologies, Inc. |
Secured communications system
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WO1985001854A1
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1983-10-07 |
1985-04-25 |
National Information Utilities Corporation |
Education utility
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1984-03-21 |
1986-02-25 |
Actv Inc. |
Method for expanding interactive CATV displayable choices for a given channel capacity
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1984-03-21 |
1986-07-22 |
Actv, Inc. |
Method for providing targeted profile interactive CATV displays
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1984-08-01 |
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Worlds Of Wonder, Inc. |
Interactive video and audio controller
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Interactive plural head laser disc system
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Interactive multi-user laser disc system
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1985-04-29 |
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Cableshare, Inc. |
Cable television system selectively distributing pre-recorded video and audio messages
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Cable television system selectively distributing pre-recorder video and audio messages
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1985-07-12 |
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Insight Telecast, Inc. |
Tv schedule system and process
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1985-08-16 |
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Wang Laboratories, Inc. |
Expert system with knowledge base having term definition hierarchy
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Document generation apparatus and methods
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Expert system apparatus and methods
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1985-12-02 |
1991-06-11 |
Media Transference International, Ltd. |
System for combining multiple audio channels into the baseband video signal and the recovery of the audio channels therefrom
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1985-12-13 |
1988-08-09 |
American Telephone And Telegraph Company, At&T Bell Laboratories |
Digital communication network architecture for providing universal information services
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1986-01-21 |
1987-03-03 |
Aviation Entertainment Corporation |
Aircraft passenger television system
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1986-03-10 |
1990-05-15 |
Kohorn H Von |
System for evaluation of response to broadcast transmissions
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1986-03-10 |
1992-07-07 |
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System and method for generating and redeeming tokens
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1986-03-10 |
1993-07-13 |
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Method for measuring the effectiveness of stimuli on decisions of shoppers
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1986-03-10 |
1989-10-24 |
Henry Von Kohorn |
System for merchandising and the evaluation of responses to broadcast transmissions
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1986-05-14 |
1988-06-07 |
Radio Telcom & Technology, Inc. |
Interactive television and data transmission system
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Interactive television and data transmission system
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Information Resources, Inc. |
Signal matching signal substitution
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1986-08-20 |
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Smith Engineering |
Interactive video apparatus with audio and video branching
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1987-01-08 |
1989-07-11 |
Smith Engineering |
Video based instructional and entertainment system using animated figure
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1987-02-19 |
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Isix, Inc. |
Video system, method and apparatus
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Interleaved video system, method and apparatus
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1987-03-16 |
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Image signal processor generating reduced memory consumption still images yet preserving image quality
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1987-04-30 |
1989-03-28 |
Gte Laboratories Incorporated & Gte Service Corporation |
Telecommunication system with video and audio frames
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1987-04-30 |
1988-10-25 |
Gte Government Systems Corporation |
Telecommunication system with frame selected continuous audio signals
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1987-04-30 |
1988-10-25 |
Gte Government Systems Corporation |
Telecommunication system with burst and continuous audio signals
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1987-07-16 |
1989-07-11 |
Actv, Inc. |
Method for providing an interactive full motion synched compatible audio/visual television display
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1987-07-16 |
1989-07-11 |
Actv, Inc. |
Interactive television system for providing full motion synched compatible audio/visual displays from transmitted television signals
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1987-07-16 |
1989-07-11 |
Actv, Inc. |
Interactive television system for providing full motion synched compatible audio/visual displays
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1987-07-21 |
1989-08-08 |
Worlds Of Wonder, Inc. |
Method of providing identification, other digital data and multiple audio tracks in video systems
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1987-07-21 |
1988-10-11 |
R. M. Schultz & Associates, Inc. |
Auditory subliminal programming system
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1987-08-24 |
1989-09-26 |
International Business Machines Corp. |
System for ensuring device compatibility
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1987-10-05 |
1988-11-15 |
Technology Inc. 64 |
Digital video decompression system
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1987-10-20 |
1989-02-21 |
Interactive Systems, Incorporated |
Interactive video method and apparatus
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1987-10-26 |
1990-04-17 |
501 Actv, Inc. |
Closed circuit television system having seamless interactive television programming and expandable user participation
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1987-10-26 |
1993-08-10 |
Actv, Inc. |
Closed circuit television system having seamless interactive television programming and expandable user participation
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1987-12-21 |
1989-12-05 |
View-Master Ideal Group, Inc. |
Interactive talking book and audio player assembly
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1988-02-22 |
1990-01-16 |
Yee Keen Y |
TV data capture device
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1988-06-16 |
1990-04-17 |
General Electric Company |
Expert system method and architecture
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1988-06-30 |
1990-02-27 |
Telaction Corporation |
System for audio/video presentation
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JPH0243822A
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1988-08-03 |
1990-02-14 |
Toshiba Corp |
テレビジョンチューナ
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1988-08-04 |
1993-08-24 |
Blair Preston E |
Method and apparatus for player interaction with animated characters and objects
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1988-08-04 |
1992-12-29 |
Preston Frank S |
TV animation interactively controlled by the viewer through input above a book page
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JP3002471B2
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1988-08-19 |
2000-01-24 |
株式会社日立製作所 |
番組配信装置
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1988-09-06 |
1990-05-08 |
Kenneth Dunlop |
Method and apparatus for providing interactive retrieval of TV still frame images and audio segments
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JPH0286384A
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1988-09-22 |
1990-03-27 |
Pioneer Electron Corp |
動画像情報サービスシステム及び該システム用ヘッドエンド装置
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1989-02-10 |
1990-12-04 |
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Method and apparatus for TV broadcasting
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1988-10-17 |
1992-10-20 |
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Method and apparatus for video broadcasting and teleconferencing
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1988-11-29 |
1990-05-29 |
Chi Wai Chu |
Multiple-user interactive audio/video apparatus with automatic response units
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1988-12-12 |
1991-12-12 |
A T Ltd Sa |
Toy for aiming and firing a radiation beam at a target
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