| Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050) |
|---|
| 10/08/1987 | WO1987006072A1 Fm receiver with noise suppression during rayleigh faded received signals |
| 10/07/1987 | EP0239591A1 Optical distribution system |
| 10/06/1987 | US4698670 Cable stereo apparatus |
| 10/06/1987 | CA1227865A1 Music delivery system |
| 09/30/1987 | EP0238988A2 Digital signal transmitting system |
| 09/22/1987 | US4696052 Simulcast transmitter apparatus having automatic synchronization capability |
| 09/22/1987 | US4696051 Simulcast transmission system having automtic synchronization |
| 09/22/1987 | US4695880 Electronic information dissemination system |
| 09/15/1987 | US4694501 Nonsynchronous independent side band AM stereo decoder |
| 09/15/1987 | US4694495 Integrable circuit for identifying a pilot tone |
| 09/15/1987 | US4694491 Cryptographic system using interchangeable key blocks and selectable key fragments |
| 09/08/1987 | EP0222772A4 Television program transmission verification method and apparatus. |
| 09/02/1987 | EP0233967A1 Digital information transmission method and mobile radio receiver tuning method using the transmitted digital information |
| 08/18/1987 | US4688255 Compatible AM broadcast/data transmisison system |
| 08/18/1987 | US4688254 Controlled blend for AM stereo receivers |
| 08/13/1987 | WO1987004884A1 Pay-per-view catv system |
| 08/13/1987 | WO1987004882A1 Method and apparatus for selectively blocking program channels |
| 08/12/1987 | EP0231616A2 Am stereo receivers having platform motion protection |
| 08/11/1987 | US4686707 Program identifier signal receiver |
| 08/04/1987 | US4684981 Digital terminal address transmitting for CATV |
| 07/15/1987 | CN86100008A A device using additional channel of broadcast band for transmitting electric load control signal, etc. |
| 07/14/1987 | US4680795 Dual purpose variable Q filter |
| 07/14/1987 | US4680794 AM stereo system with modified spectrum |
| 07/08/1987 | EP0227825A1 Electronic information dissemination system |
| 07/07/1987 | US4679239 Apparatus and method for processing stereo signals for application to an AM stereo broadcasting unit |
| 07/07/1987 | US4679238 Method and system for signalling additional information by AM medium wave broadcasting |
| 07/07/1987 | US4679237 Correction control circuit for AM stereophonic receivers |
| 07/02/1987 | DE3639896A1 Four-channel method for transmitting three-dimensional sound events |
| 06/30/1987 | US4677466 Broadcast program identification method and apparatus |
| 06/16/1987 | US4674122 Encoding for the FMX companding system |
| 06/16/1987 | EP0225461A2 Home signal distributing apparatus |
| 06/16/1987 | EP0207964A4 Broadcast stereo companding system and apparatus. |
| 06/10/1987 | EP0224900A2 Radio frequency switching, regulation, amplification and/or attenuation system |
| 05/27/1987 | EP0222772A1 Television program transmission verification method and apparatus |
| 04/21/1987 | US4660196 Digital audio satellite transmission system |
| 04/21/1987 | US4660193 Digital modulation method for standard broadcast FM subcarrier |
| 04/21/1987 | CA1220849A1 Address-programmable catv converter |
| 04/16/1987 | DE3536820A1 Traffic program decoder |
| 04/14/1987 | CA1220527A1 Fm stereophonic system incorporating companding of difference signal |
| 04/09/1987 | WO1987002205A1 Optical distribution system |
| 04/07/1987 | US4656629 Digital signal transmitting and/or receiving system |
| 04/02/1987 | DE3616864A1 Modified AM sound broadcasting system |
| 03/24/1987 | US4653095 AM stereo receivers having platform motion protection |
| 03/18/1987 | EP0214726A2 Automatic multi-system am stereo receiver using existing single-system am stereo decoder IC |
| 03/17/1987 | US4651204 Jamming signal generating circuit |
| 03/05/1987 | DE3529835A1 Method for stereophonic radio or television transmission using time-division multiplexing |
| 03/04/1987 | EP0212261A1 Broad-band distribution and communication system |
| 02/18/1987 | CN86200576U Stereophonic coding system |
| 02/17/1987 | US4644580 Sound-multiplexed TV signal demodulator having electrically independent stereo and SAP demodulation means |
| 02/12/1987 | WO1987001002A1 Electronic information dissemination system |
| 02/10/1987 | US4642633 Individual simulcast station control system |
| 02/04/1987 | EP0210609A2 Broadcast program identification method and apparatus |
| 02/03/1987 | US4641341 Automatic multi-system AM stereo receiver using existing single-system AM stereo decoder IC |
| 01/27/1987 | US4639779 Method and apparatus for the automatic identification and verification of television broadcast programs |
| 01/20/1987 | US4638504 Independent channel modulation system for AM stereo |
| 01/20/1987 | US4638503 Fully compatible AM stereophonic transmitting system |
| 01/15/1987 | WO1987000380A1 Device for automatically switching on and off the recoring function of a video recorder |
| 01/14/1987 | EP0207964A1 Broadcast stereo companding system and apparatus. |
| 01/08/1987 | DE3522770A1 Distribution service centre for sound programmes |
| 12/23/1986 | US4631745 Analog divider with minimal phase distortion |
| 12/16/1986 | US4630299 Digital circuit for decoding digitized, demodulated FM stereo signals |
| 12/16/1986 | US4630108 Preprogrammed over-the-air marketing research system |
| 12/09/1986 | US4628359 Memory selecting system for scrambled television receiver |
| 12/09/1986 | CA1215165A1 Digital signal transmitting and/or receiving system |
| 12/02/1986 | US4627105 Signal transmission system and method |
| 11/05/1986 | EP0200310A2 Direct broadcast satellite signal transmission system |
| 11/04/1986 | US4621282 Transmitting stereo audio programs in cable TV systems |
| 10/23/1986 | WO1986006239A1 Television program transmission verification method and apparatus |
| 10/22/1986 | EP0198448A1 Method for the synchronization of several pulsed transmitters-receivers |
| 10/21/1986 | US4618981 Tone detector with pseudo phase locked loop |
| 10/15/1986 | EP0197556A2 Synchronization method for radio transmitters in a local e.g. nationwide paging network |
| 10/15/1986 | EP0197277A2 Device for receiving additional broadcasting information |
| 10/15/1986 | EP0128209B1 Method of setting radio transmitters for synchronous radio transmission |
| 09/24/1986 | EP0195639A2 Improvements relating to television audience research systems |
| 09/17/1986 | EP0194769A1 Cryptographic system for a direct broadcast by satellite network |
| 09/17/1986 | EP0194289A1 Information display scheme for subscribers of a subscription television system. |
| 09/17/1986 | EP0128210B1 Method and apparatus for synchronizing radio transmitters for synchronous radio transmission |
| 09/17/1986 | CN86100930A Tone detector with pseudo phase locked loop |
| 09/16/1986 | US4612662 Control circuit |
| 09/16/1986 | US4612519 Switch assembly and circuit |
| 09/15/1986 | EP0177512A4 Preprogrammed over-the-air marketing research system. |
| 09/10/1986 | EP0194085A2 Tone detector with pseudo phase locked loop |
| 09/09/1986 | CA1211237A1 Fm stereo multiplex demodulator |
| 08/26/1986 | US4608699 Simulcast transmission system |
| 08/20/1986 | EP0191684A1 Method for distributing data by an organism to one or a plurality of receivers, and system for carrying out this method |
| 08/20/1986 | EP0191472A2 AM stereo receiver |
| 08/20/1986 | CN86100932A Digital circuit for deciding digitized demodulated fm stereo signals |
| 08/06/1986 | EP0189622A1 Method and apparatus for automatically detecting and playing desired audio segments over a broadcast receiver |
| 07/30/1986 | CN86100623A Method of diffusing data by an organism to one or several addresses and system for carrying out said method |
| 07/24/1986 | EP0158633A4 Education utility. |
| 07/22/1986 | US4602381 Adaptive expanders for FM stereophonic broadcasting system utilizing companding of difference signal |
| 07/22/1986 | US4602380 Compatible transmission techniques for FM stereophonic radio and television |
| 07/22/1986 | US4602379 Dual indicator circuit for tuning and stereo signals |
| 07/17/1986 | WO1986004201A1 Broadcast stereo companding system and apparatus |
| 07/08/1986 | CA1207432A1 Memory selecting system for scrambled television receiver |
| 07/02/1986 | EP0185729A1 Compatible am broadcast/data transmission system |
| 07/02/1986 | CN85108672A Improved amplitude modulation stereophonic radio system |
| 07/01/1986 | US4598288 Apparatus for controlling the reception of transmitted programs |
| 06/17/1986 | US4596042 Radio transmission method for a mobile radio system |
| 06/03/1986 | US4593402 AM stereo transmitter |