Patents
Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050)
01/1997
01/29/1997EP0756259A1 RDS-TMC radio receiver
01/29/1997EP0756258A1 RDS-TMC radio receiver
01/29/1997EP0756257A1 RDS-TMC radio receiver
01/29/1997EP0755608A1 A distance learning system providing individual television participation, audio responses, and memory for every student
01/29/1997EP0755607A1 Apparatus and method for accessing broadcast information
01/29/1997EP0755600A1 System for transmitting a packetized message, transmitter and receiver for use in such a system, and methods of transmitting and receiving a packetized message
01/29/1997EP0614584B1 Digital data transmission process in the null symbol of a cofdm modulation process
01/23/1997WO1997002673A1 Group modulator for a broadband communications system
01/23/1997WO1997002672A1 Method and arrangement for the transmitter-related detection of listener-related data
01/23/1997WO1997002671A2 System for coupling telephony signals transmitted through a broadband communications network to a telephony network interface
01/23/1997WO1997002670A1 System for connecting a packet data network to a digital radio network
01/23/1997CA2225563A1 Method and arrangement for the transmitter-related detection of listener-related data
01/22/1997EP0754377A1 A method and system for digital audio information broadcasting comprising data compression, encryption and speech synthesizing
01/22/1997CN1140939A Receiver for receiving multiplexed test broadcasts
01/22/1997CN1140936A Car radio receiver comprising memory for storing predetermined vocabulary elements
01/21/1997US5596649 Sound concentrator for selectively collecting sound and concentrating and transmitting the collected sound
01/21/1997US5596647 Integrated video and audio signal distribution system and method for use on commercial aircraft and other vehicles
01/16/1997WO1997001931A1 Wideband signal distribution system
01/16/1997WO1997001894A1 Modulation method and circuit arrangement for the transmission of data signals
01/16/1997WO1996036151A3 System and method for transmitting and receiving data in packets using different packet type identifiers
01/15/1997EP0753945A2 Apparatus integrating digital audio and analog video reception in a single receiver
01/15/1997EP0753234A1 Method of producing an electronic tv/radio-programme timetable
01/15/1997EP0753223A1 Method of tuning a mobile radio receiver to radio broadcasting programmes carrying traffic information
01/15/1997CN2245308Y Automatic controller for broadcast
01/14/1997US5594937 System for the transmission and reception of directional radio signals utilizing a gigahertz implosion concept
01/14/1997US5594799 Circuit for suppression of short-lived noise-phenomena in a digital audio signal
01/14/1997US5594794 For providing video services to consumers via an information network
01/14/1997US5594779 Mobile audio program selection system using public switched telephone network
01/14/1997US5594761 Control channel timing detection and self correction for digitally trunked simulcast radio communications system
01/14/1997US5594726 Frequency agile broadband communications system
01/09/1997WO1997001244A1 Method and apparatus for providing access to a large number of communications channels via a relatively narrow bandwidth conduit
01/09/1997DE19605381A1 Modulationsverfahren und -Schaltungsanordnung zur Übertragung von Datensignalen Modulation method and for transmitting data signals -Schaltungsanordnung
01/09/1997DE19523515A1 Verfahren sowie Anlage zur senderbezogenen Erfassung von zuhörerbezogenen Daten Method and system for transmitter-related acquisition of listeners related data
01/08/1997EP0752767A2 Signal processing apparatus and methods
01/08/1997EP0752678A2 Apparatus and method for executing game programs having advertisements therein
01/08/1997EP0752191A1 Method and equipment for transmitting messages to mobile radio stations
01/08/1997EP0752146A1 Method of and receiver for processing and reproducing a message
01/08/1997EP0372035B1 Dynamic callback technique
01/07/1997US5592584 Method and apparatus for two-component signal compression
01/07/1997US5592540 Method and apparatus for selectively delivering telephony signals on a hybrid coaxial cable network
01/07/1997US5592491 Two-way communication network
01/07/1997US5592471 Mobile radio receivers using time diversity to avoid service outages in multichannel broadcast transmission systems
01/07/1997US5592213 Receiving unit for two-way broadcasting including automatic display of operating state of a transmitting system
01/07/1997CA1338833C Pay-per view catv system
01/03/1997WO1997000571A1 Coaxial testing and provisioning network interface device
01/03/1997WO1997000564A2 Communication system for superimposing data onto a video signal
01/03/1997WO1997000563A1 Method and system for receiving data packets in a unidirectional broadcasting system
01/03/1997CA2224675A1 Coaxial testing and provisioning network interface device
01/03/1997CA2224238A1 Communication system for superimposing data onto a video signal
01/02/1997EP0751640A2 Method for meging supplementary broadcast programmes into a main broadcast programme
01/02/1997EP0751639A1 Method, transmitter and receiver for transmitting and receiving information; information broadcasting, in particular RDS (Radio Data System)
01/02/1997EP0751520A2 Transmission of digital signals by means of a record carrier
01/02/1997EP0750827A1 Sectorized multi-function cellular radio communication system
01/02/1997EP0750811A1 Process for coding a plurality of audio signals
01/02/1997EP0649588B1 Transmission and storage of multi-channel audio-signals when using a bit rate-reducing coding process
01/02/1997DE19626064A1 Device for correcting faults in monitoring block for master position in optical TV cable
12/1996
12/31/1996US5590403 Method and system for efficiently providing two way communication between a central network and mobile unit
12/31/1996US5590195 Information dissemination using various transmission modes
12/31/1996US5590153 Digital modem for reducing interference in the same channel of another system
12/31/1996US5588842 Karaoke control system for a plurality of karaoke devices
12/27/1996WO1996042168A1 Switched channel system
12/27/1996WO1996042145A1 Transmission protocol for file transfer in a dab system
12/27/1996WO1996042144A1 Transmission of multimedia objects in a digital broadcasting system
12/27/1996EP0749650A1 Method and apparatus for am compatible digital broadcasting
12/27/1996EP0749649A1 Digital broadcast systems for local transmissions
12/25/1996CN2243747Y Broadcast paging system
12/25/1996CN1138923A Receiver for FM multiplex broadcasting with detatchable storing medium
12/25/1996CN1138807A Information providing system and portable electronic devices for use therewith
12/25/1996CN1138802A Data receiving-processing apparatus and method and broadcasting method
12/25/1996CN1138779A Transmission method and receiving apparatus of emergency information which is frequency-multiplexed on FM broadcast radio wave
12/24/1996US5588022 Method and apparatus for AM compatible digital broadcasting
12/19/1996WO1996041452A1 Reverse path allocation and contention resolution scheme for a broadband communications system
12/19/1996DE19521707A1 Antenna signal receiver apparatus
12/18/1996EP0749252A2 Adjustment of transmission times in a multipoint transmission system
12/18/1996EP0749221A2 Method and apparatus for delivering information in a real time mode over a non-dedicated circuit
12/18/1996EP0748538A1 Interleaving with low-speed memory
12/18/1996EP0691050B1 Circuit for deriving audio signal masking signals
12/17/1996US5586121 Asymmetric hybrid access system and method
12/17/1996US5586119 Method and apparatus for packet alignment in a communication system
12/17/1996US5585858 Simulcast of interactive signals with a conventional video signal
12/11/1996EP0748073A1 Message transmission protocol for access control for RDS applications; transmitting and receiving means therefor
12/11/1996EP0748072A2 A receiver for receiving supplementary text information with a broadcast programme, the text information being multiplexed with the broadcast programme
12/11/1996EP0746942A1 Downstream control of electronic billboard
12/11/1996EP0746941A1 Interactive television security through transaction time stamping
12/11/1996EP0746909A1 De-interleaving and buffering in one memory
12/10/1996US5584051 Radio broadcast transmission system and receiver for incompatible signal formats, and method therefor
12/10/1996US5584050 Program monitoring system
12/10/1996US5583962 For encoding two or more audio channels
12/10/1996US5583873 Multiplex broadcasting station selection method
12/05/1996WO1996038927A1 Data broadcasting system using the human ear properties
12/05/1996WO1996038837A2 A vocal information system
12/05/1996WO1996038835A2 Device for generating coded speech items in a vehicle
12/05/1996WO1996038830A1 Process and electronic device for conveying regionally applicable radio information to a driver or passengers in a motor vehicle
12/05/1996DE19532503C1 Digital radio signal receiving terminal
12/05/1996DE19520148A1 Verfahren und elektronische Einrichtung zur Vermittlung regional gültiger Funk-Informationen an einen Fahrer bzw. an Insassen eines Kraftfahrzeugs Method and device for electronic switching regionally valid radio information to a driver or occupant of a motor vehicle
12/04/1996EP0746119A2 Satellite communications system for transmitting information from an information centre to a satellite receiving terminal with identifier allocated to information
12/04/1996EP0745964A1 Traffic information apparatus with multilingual message generator
12/03/1996US5581804 Nationwide communication system
12/03/1996US5581800 Method and apparatus for automatically identifying a program including a sound signal
12/03/1996US5581706 Method forming an audio/video interactive data signal