| Patents for H04H 20 - Arrangements for broadcast or for distribution combined with broadcast (21,050) |
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| 11/09/1993 | US5261004 Noise blanking circuit for AM stero |
| 11/09/1993 | US5260700 Enhanced throughput in simulcast communication systems |
| 11/03/1993 | EP0568143A1 Improved transmitter network with a single transmitter frequency |
| 11/03/1993 | EP0568142A2 Improved transmitter network with a single transmitter frequency |
| 11/02/1993 | US5258838 HDTV transmission system with reduced NTSC co-channel interference |
| 10/28/1993 | WO1993021732A1 Digital audio/video insertion system |
| 10/28/1993 | WO1993021701A1 Method for transmission and/or synchronization of at least one component of a multiplex signal |
| 10/27/1993 | EP0566662A1 Audio and video transmission and receiving system |
| 10/26/1993 | US5257404 Simulcast synchronization and equalization system and method therefor |
| 10/26/1993 | US5257099 Central data processing station for satellite communication with local area audience response station |
| 10/22/1993 | EP0586374A4 Method and apparatus for synchronizing simulcast systems. |
| 10/21/1993 | DE4212772A1 Wide-band pre-distortion circuit - compensates for second order distortion in analogue CATV laser diodes over wide frequency range |
| 10/19/1993 | US5255086 Method and apparatus for RF data transfer in a CATV system |
| 10/19/1993 | CA1323426C Device for receiving and processing road information |
| 10/14/1993 | DE4239271A1 Anti-theft system for vehicle using transmitted signals - has transmitter initiated by signal when object removed ,which provides identification data and also GPS location data |
| 10/13/1993 | EP0564850A1 A symmetrically balanced phase and amplitude base band processor for a quadrature receiver |
| 10/12/1993 | US5253298 Reducing audible noise in stereo receiving |
| 10/12/1993 | US5253275 Audio and video transmission and receiving system |
| 10/12/1993 | US5252077 Process for materializing virtual interactivity between an individual and a data support |
| 10/07/1993 | CA2090739A1 A symmetrically balanced phase and amplitude base band processor for a quadrature receiver |
| 10/06/1993 | EP0564353A1 Car receiver for assisting the navigation of an automotive vehicle |
| 10/06/1993 | EP0564089A1 A method and appartus for the perceptual coding of audio signals |
| 10/06/1993 | EP0563832A1 Stereo audio encoding apparatus and method |
| 10/06/1993 | CN1077072A 可变速度异步调制解调器 Variable-speed asynchronous modem |
| 10/06/1993 | CN1022365C Numerically controlled non-interrupted operating circuit for broadcasting transmitter |
| 10/05/1993 | US5251324 Method and apparatus for generating and collecting viewing statistics for remote terminals in a cable television system |
| 10/05/1993 | CA2003763C Apparatus and method for providing digital audio in the fm broadcast band |
| 10/02/1993 | CA2092940A1 Navigation aid receiver for an automobile vehicle |
| 09/30/1993 | WO1993019543A1 Method and apparatus for minimizing error propagation in correlative digital communication system |
| 09/30/1993 | WO1993019536A1 Data compression process during storage and/or transmissioin of digital audio signals for studio applications with perceptive coding and variable length code |
| 09/30/1993 | DE4209544A1 Verfahren zum Übertragen oder Speichern digitalisierter, mehrkanaliger Tonsignale A method of transmitting or storing digitized, multi-channel audio signals |
| 09/30/1993 | DE4208995A1 Verfahren zum Übertragen oder Speichern digitalisierter mehrkanaliger Tonsignale A method of transmitting or storing digitized multi-channel audio signals |
| 09/30/1993 | CA2131806A1 Data compression process during storage and/or transmission of digital audio signals for studio applications with perceptive coding and variable length code |
| 09/29/1993 | EP0562896A1 Transmission control method and system for a single-frequency and/or FM transmitter network with an overlapping area |
| 09/29/1993 | EP0562875A1 Multiresolution QAM system |
| 09/29/1993 | EP0562410A1 Method and apparatus for synchronizing a real time clock |
| 09/29/1993 | CN1076816A System of communication |
| 09/28/1993 | US5249303 Continuous reception by a mobile receiver unit of program channels transmitted by a series of transmitters |
| 09/28/1993 | US5249204 Circuit and method for phase error correction in a digital receiver |
| 09/28/1993 | US5249044 Product information storage, display, and coupon dispensing system |
| 09/28/1993 | CA1322592C Control of rf pulses in a tv answer back system |
| 09/28/1993 | CA1322590C Multimedia bidirectional broadcast system |
| 09/28/1993 | CA1322580C Local area network system |
| 09/23/1993 | DE4234156A1 Vcr-vorrichtung, die eine steuerfunktion fuer eine kabelanschlussbox aufweist, und entsprechendes steuerverfahren VCR apparatus having a control function for a terminal box, and corresponding control method, |
| 09/22/1993 | EP0561435A2 Information transfer system, a transmitter, a receiver and a record carrier for use in the system |
| 09/22/1993 | CN1076568A Information transfer system a transmitter, a receiver and a record carrier for use in the system |
| 09/16/1993 | WO1993018495A1 Road traffic radio receiver |
| 09/16/1993 | DE4208277A1 Verkehrsrundfunkempfaenger Verkehrsrundfunkempfaenger |
| 09/16/1993 | DE4207664A1 Traffic radio recording system - uses RAM chip provided as extra component of traffic radio receiver |
| 09/15/1993 | EP0560079A1 Method for radiosynchronization of base stations in a simulcasting network |
| 09/15/1993 | EP0559831A1 Method and apparatus for transmitting, receiving and communicating data signals with corresponding program data signals |
| 09/14/1993 | US5245634 Base-site synchronization in a communication system |
| 09/14/1993 | US5245420 CATV pay per view interdiction system |
| 09/08/1993 | EP0559383A1 A method and apparatus for coding audio signals based on perceptual model |
| 09/08/1993 | EP0558918A2 RDS broadcast receiver with a device for adapting the volume in EON receiving mode |
| 09/08/1993 | EP0558903A1 Car radio with an RDS decoder |
| 09/02/1993 | WO1993017509A1 Demodulator for radio data signals |
| 09/02/1993 | WO1993017496A1 Method of inputting alphanumeric data |
| 09/02/1993 | DE4205016A1 Demodulator for radio data signals - provides data pulse signal with one of two levels depending on difference between phases of received and delayed signals. |
| 09/02/1993 | DE4205015A1 Demodulator for radio data signals - provides data pulse of one of two levels depending on sign of difference between phases of received signal and delayed signal |
| 09/01/1993 | EP0557298A1 Simulcast scheduler |
| 08/26/1993 | DE4304179A1 Radio data signal receiver for car radio - uses stored reception signals for supplying reproduction circuit during switching between different signals to maintain reception quality. |
| 08/26/1993 | DE4230912A1 Verfahren zur eingabe von alphanumerischen informationen Method for the input of alphanumeric information |
| 08/26/1993 | DE4205014A1 Demodulator for radio data signals in car radio - compares phase of two rectangular signals to provide flank of demodulated radio data signal |
| 08/25/1993 | EP0557058A1 Combined data audio and video distribution system |
| 08/25/1993 | CN1075581A Headend proctessing for a digital transmission system |
| 08/24/1993 | US5239699 Am-fm combined stereo receiver |
| 08/24/1993 | US5239672 Synchronization method and apparatus for simulcast transmission system |
| 08/24/1993 | US5239671 Simulcast satellite paging system with provision for signal interruption |
| 08/24/1993 | US5239585 Devices, systems, and methods for composite signal decoding |
| 08/24/1993 | US5239540 Method and apparatus for transmitting, receiving and communicating digital data signals with corresponding program data signals which describe the digital data signals |
| 08/18/1993 | EP0555304A1 Multichannel operation of rds |
| 08/17/1993 | US5236199 Interactive media system and telecomputing method using telephone keypad signalling |
| 08/05/1993 | WO1993015551A1 Variable speed asynchronous modem |
| 08/05/1993 | CA2126342A1 Variable speed asynchronous modem |
| 08/04/1993 | EP0553537A1 Self correction of PST simulcast system timing |
| 08/04/1993 | EP0553306A1 Improved digital system for recording and reproducing radiophonic advertisements |
| 08/04/1993 | EP0553289A1 Digital audio broadcasting system |
| 08/03/1993 | US5233654 Signal processing apparatus and methods |
| 07/27/1993 | US5231512 Editing apparatus employing serial to parallel converters and parallel to serial converters to achieve a dimensional reduction of the apparatus |
| 07/23/1993 | CA2083779A1 Self correction of pst simulcast system timing |
| 07/14/1993 | EP0551126A1 Simulcast radio paging system |
| 07/14/1993 | CN2138369Y Output overload protector of amplifier |
| 07/14/1993 | CN1074323A VCR apparatus having cable box control function and control method therefor |
| 07/13/1993 | US5227874 Method for measuring the effectiveness of stimuli on decisions of shoppers |
| 07/13/1993 | US5227741 Variable speed asynchronous modem |
| 07/06/1993 | US5226062 Method and device for detecting multi-level digital signal data stream termination |
| 07/06/1993 | US5225902 Automatic frequency selection in a bi-directional cable television system |
| 06/30/1993 | EP0548471A1 Broadcast receiving apparatus for the reception, in conformity with the norms, of sound programs |
| 06/30/1993 | EP0548071A1 Encoding system |
| 06/29/1993 | US5223923 Cellular repeater stations in a wireless audience response system for satellite communication |
| 06/24/1993 | WO1993012597A1 Spread-spectrum data publishing system |
| 06/24/1993 | WO1993012586A1 Process for improving the coverage of radio cells in a cellular mobile radio system and device for implementing it |
| 06/24/1993 | DE4142812A1 Text information transmission procedure via HF bandwidth channels - using standard TV or radio channel when not being utilised for transmission of programme information |
| 06/22/1993 | US5222254 Receiver including means for acquisition and comparison of identification data of two transmission channels |
| 06/22/1993 | US5222143 Compatible multivoice broadcasting receiver |
| 06/17/1993 | DE4242548A1 Automatic audio signal tuner for multiplex transmission systems - detects digital audio signal in dependence on PCM clock signal derived from multiplex type discrimination circuit |
| 06/17/1993 | DE4141398A1 Verfahren zur verbesserung der funkzellenausleuchtung bei eimen zellularen mobilfunksystem und vorrichtung zur ausuebung des verfahrens Method for improvement of radio-cell illumination at eimen cellular mobile radio system and apparatus for performing the method |
| 06/15/1993 | US5220681 Electronic signal decoder display/enunciator apparatus for electronic signal receivers |
| 06/15/1993 | US5220676 Synchronization method and apparatus |