| Patents for G09B 5 - Electrically-operated educational appliances (14,377) |
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| 07/24/1990 | US4943851 360 degree viewing system having a liquid crystal display screen encircling a rotatable projection screen |
| 07/18/1990 | EP0378222A1 Magnetic recording medium and method of magnetically recording and reading data |
| 07/18/1990 | EP0144352B1 Sequence versatile video system |
| 07/17/1990 | US4942551 Method and apparatus for storing MIDI information in subcode packs |
| 07/11/1990 | CN2059262U Multi-functional radio recorder and its complement equipment |
| 07/11/1990 | CN2059261U Automatic sentence dividing reading device for radio recorder |
| 07/05/1990 | DE3844107A1 Teaching aid as an allocation game with mechanical solution verification, in three parts, for demonstration, individual elaboration, and visual instruction purposes |
| 07/04/1990 | CN2059007U Multi-function language study-aid |
| 07/04/1990 | CN1043581A Digital display reverse counting timed card cyclic memory machine |
| 07/03/1990 | US4939326 Flat switch insertable into a magazine and usable as part of a survey technique for readership of publications |
| 06/26/1990 | US4936780 A talking block |
| 06/19/1990 | US4934940 Dental hygiene instruction display |
| 06/13/1990 | CN2058262U Reciprocating type flash card pronunciation apparatus |
| 06/06/1990 | CN1042788A Learning device system for computer foreign language aural comprehension |
| 05/31/1990 | DE3938847A1 Thermoelementanordnung und verfahren zu ihrer herstellung A thermocouple assembly and process for their preparation |
| 05/29/1990 | US4930019 Multiple-user interactive audio/video apparatus with automatic response units |
| 05/23/1990 | CN1042437A Magnetic logic door device for card set |
| 05/23/1990 | CA2003202A1 Printed circuit thermocouple arrangements for personnel training and equipment evaluation purposes, and methods of making and using same |
| 05/17/1990 | WO1990005350A1 Interactive audiovisual control mechanism |
| 05/16/1990 | EP0368475A2 Interactive video system |
| 05/15/1990 | US4924743 Musical dancing block set |
| 05/09/1990 | EP0367544A2 Process control using intelligence-based systems |
| 05/09/1990 | CN2057015U Remote-control film moving device for projection |
| 05/08/1990 | US4923428 Interactive talking toy |
| 05/03/1990 | WO1990004848A1 Production of video recordings |
| 04/17/1990 | US4918516 Closed circuit television system having seamless interactive television programming and expandable user participation |
| 04/11/1990 | CN2055967U Electronic play and study machine for children |
| 04/11/1990 | CN2055966U Multipurpose flash teaching material |
| 04/10/1990 | US4915632 Communication aid with sequential lighting |
| 04/10/1990 | US4915626 Dental inspection and display apparatus |
| 04/04/1990 | EP0360830A1 Improved pager based information system. |
| 03/28/1990 | EP0360388A2 Method and apparatus for automatic address setting for recording and replay |
| 03/20/1990 | CA1266930A1 Hybrid alphanumeric telephone directory |
| 03/08/1990 | WO1990002402A1 Training method and apparatus with audio and digital signals recording and play back |
| 03/07/1990 | CN2054185U Clause playing and reading apparatus of natural language tape |
| 03/07/1990 | CN1040280A Computerized automatic education system |
| 03/06/1990 | US4907146 Interactive video network between one master computer and a plurality of slave computers |
| 02/21/1990 | CN1039912A Software agent used to provide instruction to a user for a plurality of computer applications |
| 02/13/1990 | US4901140 Solid state 360 degree viewing system having a liquid crystal display (LCD) screen that encircles the rotating real image in space and functions as a multi-color filter system |
| 02/08/1990 | WO1990001203A1 Language training |
| 01/31/1990 | EP0352908A2 Computing system and method used to provide instruction to a user for a plurality of computer applications |
| 01/24/1990 | EP0351425A1 Data processing system, particularly for domestic use |
| 01/24/1990 | CN2051762U Electronic teaching device for chinese/english pronunciations |
| 01/16/1990 | US4893540 Display apparatus for visually impaired persons |
| 01/09/1990 | US4893256 Interactive video composition and presentation systems |
| 01/09/1990 | US4893197 Pause compression and reconstitution for recording/playback apparatus |
| 01/03/1990 | CN2050636U Movable mould plate projection teaching aid |
| 01/02/1990 | US4891712 Method of conducting marketing research by using video tape productions |
| 12/28/1989 | WO1989012882A2 A process for generating random programs by multiple choice |
| 12/28/1989 | WO1989012860A1 Method and apparatus for storing midi information in subcode packs |
| 12/27/1989 | EP0347419A1 Improvements in interactive video systems. |
| 12/27/1989 | CN2050200U Xd-1 type student electron brain |
| 12/20/1989 | EP0346402A1 Interactive video method and apparatus |
| 12/20/1989 | CN2049802U Apparatus for reading characters |
| 12/12/1989 | US4887152 Message delivery system operable in an override mode upon reception of a command signal |
| 12/07/1989 | DE3819107A1 Infrared environment (surroundings) simulator |
| 12/06/1989 | CN2049006U Playback recorder for studying language |
| 12/05/1989 | US4884974 Interactive talking book and audio player assembly |
| 12/05/1989 | US4884972 Speech synchronized animation |
| 11/30/1989 | DE3816881A1 Device for learning a foreign language |
| 11/30/1989 | DE3816832A1 Process of the transmission of information stored in a CD(V) auxiliary channel |
| 11/29/1989 | CN2048602U Study and develop card for single plate micro computer |
| 11/15/1989 | CN2047818U Anti-interference audio and video study device |
| 10/25/1989 | EP0190329B1 Video disk apparatus providing organized picture playback |
| 10/25/1989 | CN1036649A Reciprocating type pronunciation machine for word cards |
| 10/18/1989 | CN1036490A Interactive video method and apparatus |
| 09/27/1989 | CN1035900A Electronic blackboard device and the writer and eraser thereof |
| 09/26/1989 | US4870613 Method for interactively changing video disks |
| 09/26/1989 | US4870579 System and method of predicting subjective reactions |
| 09/13/1989 | CN1035577A System for transferring information using information carrier |
| 09/12/1989 | US4866515 Passenger service and entertainment system for supplying frequency-multiplexed video, audio, and television game software signals to passenger seat terminals |
| 09/12/1989 | CA1259410A1 Apparatus for making and editing dictionary entries in a text-to-speech conversion system |
| 09/06/1989 | EP0331572A1 Method for the generation of programmes for the psychological teaching of persons, especially during their sleeping periods |
| 09/05/1989 | US4864623 Method of recognizing a control command in a system, and interactive system for carrying out the method |
| 08/30/1989 | CN2043778U Read following device for improving memory |
| 08/29/1989 | US4862497 Hybrid alphanumeric telephone directory |
| 08/24/1989 | WO1989007818A1 Voice-training arrangement |
| 08/24/1989 | WO1989007817A1 Interactive audiovisual tutorial system |
| 08/23/1989 | CN2043398U Sound image synchronous full-automatic control device for slide projector |
| 08/23/1989 | CN1035015A Screen teaching method |
| 08/16/1989 | CN2042988U Literacy machine for child |
| 08/16/1989 | CN2042987U Mnemonic apparatus for foreign word |
| 08/15/1989 | US4857030 Conversing dolls |
| 08/08/1989 | US4855844 Method of prerecording tape and apparatus for use therewith |
| 08/08/1989 | US4855842 Dedicated programmable controller for interactive video disc system |
| 08/08/1989 | US4855827 Method of providing identification, other digital data and multiple audio tracks in video systems |
| 08/08/1989 | US4854878 Textbook with animated illustrations |
| 07/27/1989 | DE3801332A1 Use of a data transmission method |
| 07/26/1989 | EP0325325A2 System for transferring information using an information carrier |
| 07/25/1989 | US4851931 Method and apparatus for producing an audio magnetic tape recording at high speed from a preselected music library |
| 07/11/1989 | US4847700 Interactive television system for providing full motion synched compatible audio/visual displays from transmitted television signals |
| 07/11/1989 | US4847699 Method for providing an interactive full motion synched compatible audio/visual television display |
| 07/11/1989 | US4847698 Interactive television system for providing full motion synched compatible audio/visual displays |
| 07/11/1989 | US4846693 Video based instructional and entertainment system using animated figure |
| 07/11/1989 | CA1257386A1 Method of and system for controlling video tape recorder with computer |
| 07/04/1989 | US4845491 Pager based information system |
| 06/29/1989 | WO1989006028A1 Display apparatus for visually impaired persons |
| 06/28/1989 | EP0322103A2 Image access system |
| 06/28/1989 | CN2040269U Multi-functional studying aid |
| 06/21/1989 | EP0321084A2 Teleconferencing system including paperless facsimile means |