Patents
Patents for H04Q 9 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom (14,096)
03/1991
03/26/1991US5003396 Black and white monitoring system for use in a remote controller
03/26/1991CA1282118C2 Automatic/remote rf instrument monitoring system
03/20/1991EP0418083A2 Control instrument condition sensing
03/20/1991EP0417807A2 Remote control unit
03/19/1991US5001774 Stereo headphone remote control circuit
03/19/1991CA1281799C Remote maintenance system for digital communication network
03/12/1991US4999622 Remote commander having a ROM read-out pre-programmed codes therefrom
03/07/1991WO1991003126A2 Process and device for sender-side controlled operation of a receiver-side appliance
03/07/1991WO1991003038A1 Remote control system
03/07/1991WO1991002668A1 Data transmission process by serial data bus in distributed systems
03/07/1991DE4003754A1 Rotatable and pivotable electric lamp for room lighting - is operated by remote control using modulated IR radiation directed at protected photoreceiver on lamp support
03/07/1991DE3920948A1 Electronic pulse group generator - uses last but one pulse to trigger internally generated last pulse whose interval is at least equal to clock pulses
03/06/1991EP0415760A2 Remote sensor communications system and method
03/06/1991EP0415621A2 Communication system for single point emergency lighting
03/06/1991EP0415169A1 Method for data transmission
03/05/1991US4998294 Opto-electrical power transmission and control system
03/05/1991CA1281095C Multipurpose digital integrated circuit for communication and control network
03/02/1991CA2024503A1 Remote sensor communications system and method
03/01/1991CA2020090A1 Communication system for single point emergency lighting
02/1991
02/28/1991DE3928188A1 Verfahren und einrichtung zum senderseitig gesteuerten betaetigen eines empfaengerseitigen geraetes Method and device for the transmitter end controlled actuation of a device empfaengerseitigen
02/28/1991DE3927968A1 Verfahren zur datenuebertragung ueber einen seriellen datenbus in verteilten systemen Method for data transmission over a serial data bus in distributed systems
02/28/1991DE3927838A1 Fernbedienungssystem Remote control system
02/27/1991EP0414524A2 Multiple zone audio system
02/26/1991US4996518 Fire alarm system
02/26/1991US4996514 Car theft proofing system
02/25/1991CA2023455A1 Multiple zone audio system
02/21/1991WO1991001903A1 Regulating or control system
02/13/1991EP0412424A2 High speed digital telemetry system for implantable device
02/13/1991EP0412335A2 Method and apparatus for determining audience viewing habits
02/12/1991US4992671 Circuit arrangement for at least one electric load of a motor vehicle
02/07/1991DE3925830A1 Regel- oder steuersystem Regulating or control system
02/05/1991US4990836 Motorized automobile antenna control device
02/05/1991CA1279916C Gas cylinder monitor and control system
01/1991
01/30/1991EP0410194A1 Remote control transmitter
01/29/1991WO1991002300A1 Universal analog input
01/29/1991US4989081 Home-bus-information system
01/29/1991US4988989 Master-slave communication system for stations having timer means
01/29/1991CA2040422A1 Universal analog input
01/24/1991DE4022178A1 Command transmitter with number of function modes - has number of adjusters for function mode selection and data adjustment
01/23/1991EP0408580A1 Device for in-process monitoring of transmission systems.
01/22/1991CA1279374C Seismic signal transmission system using radio relays
01/22/1991CA1279372C Non-electronic gain control
01/15/1991US4985694 Car theft proofing system
01/15/1991US4985693 Car theft proofing system
01/15/1991CA1279117C Local control system for domestic appliances and alarm devices
01/09/1991EP0406486A1 Control system for controlling consumer apparatus, in particular audio and/or video apparatus and consumer apparatus for use in such control system
01/09/1991EP0406346A1 Power management and automation system
01/08/1991US4983964 System for data transmission
01/08/1991US4983948 Car theft proofing system
01/01/1991US4982186 Pulse train relay
12/1990
12/27/1990EP0403709A2 Parameter value communication system
12/26/1990CN1048132A Remote control receiving for home electric applicance and receiving method thereof
12/26/1990CN1048085A 动力传递 Power transmission
12/25/1990US4980681 Direct view remote control method for workings machine and transmitter and receiver assembly for carrying out such method
12/24/1990CA2019698A1 Communications system with contention protocol
12/19/1990EP0402813A2 Power transmission
12/19/1990EP0402654A2 Connection device for the connection of electrical appliances
12/19/1990EP0402620A2 Wireless transmitting-receiving apparatus for a bicycle
12/18/1990CA1278062C2 Multipurpose digital integrated circuit for communication and control network
12/18/1990CA1278061C2 Multipurpose digital integrated circuit for communication and control network
12/11/1990US4977404 Remote control transmitter for emitting control commands
12/11/1990US4977353 Communication system for single point emergency lighting
12/06/1990DE4017533A1 Control-supervisory signal transmission system - employs shared data line for bidirectional traffic between controller and controlled devices or device state monitors
12/05/1990EP0400264A2 Security lock for electrical equipment
12/04/1990US4975865 Method and apparatus for real-time control
12/04/1990US4975592 Current supply arrangement having a stand-by mode featuring low power consumption
12/04/1990CA1277381C2 Multipurpose digital integrated circuit for communication and control network
12/01/1990WO1990015391A1 Method and apparatus for real-time control
12/01/1990CA2057039A1 Method and apparatus for real-time control
11/1990
11/29/1990WO1990014484A1 Transmission and receiving system
11/28/1990EP0399725A1 Automatic transducer excitation source testing system
11/28/1990EP0399200A2 Functionally modifiable cable television converter system
11/27/1990US4974199 Digital IC-microcomputer interface
11/27/1990US4973943 Signal control system using two synchronous ring counter circuits
11/27/1990CA1277033C Automatic metering apparatus
11/22/1990EP0398550A2 Power status detecting apparatus
11/22/1990DE4009658A1 Fernsteuerbares leistungsstellsystem A remotely controllable power adjustment system
11/22/1990DE3915188C1 Wireless interrogation and current supply method for switches - using capacitative and inductive elements corresp. to sec. winding of transformer
11/22/1990CA2005359A1 Character/graphic information network system
11/20/1990US4972503 Method and apparatus for determining audience viewing habits by jamming a control signal and identifying the viewers command
11/20/1990US4972184 Polling system for use in an audio system
11/20/1990CA1276682C Secure communication system for multiple remote units
11/15/1990WO1990013984A1 Electronic meter reader system
11/15/1990DE4012273A1 Fernsteuereinheit Remote control unit
11/14/1990EP0396535A1 System and method for transferring status information between a plurality of status sites
11/08/1990DE4012347A1 Einrichtung zum adressieren einer speichervorrichtung fuer eine fernsteuereinheit Means for addressing a memory device for a remote control unit
11/07/1990EP0396355A2 Information handling and control systems
11/06/1990US4969082 Control method for a collective wiring system
10/1990
10/31/1990EP0394895A1 Communication adapter for remote control terminal
10/31/1990EP0394427A1 Multiple channel data acquisition system
10/24/1990CN1046405A Remote controlling device
10/23/1990US4965567 Method of, and apparatus for, transmitting data in a manufacturing machine comprising a plurality of production stations
10/23/1990US4965557 Interactive control of entertainment electronics apparatus
10/23/1990US4964693 Radio having optical controls and method of optically controlling same
10/17/1990EP0392872A2 A wireless remote controller
10/17/1990EP0392824A1 Metal substrate for thick film circuits for automotive electrical systems
10/16/1990US4964058 Power management and automation system
10/16/1990CA1275314C Receiver
10/10/1990EP0391657A2 Tuner control apparatus having tune-by-label capability
10/10/1990EP0391656A2 Tuner control apparatus having tune-by-label capability and using alphabetical label storage