Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 11 - Telephonic communication systems specially adapted for combination with other electrical systems
Patents for H04M 11 - Telephonic communication systems specially adapted for combination with other electrical systems (53,055)
02/1990
02/28/1990EP0355838A2 Visual telephone apparatus
02/28/1990CN2053825U Telephone automatic alarm device
02/27/1990US4905282 Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem
02/27/1990US4905273 Data transmission system
02/27/1990US4905271 Method of preventing auto theft
02/22/1990WO1990001843A2 Remote dictation system using telephone line
02/22/1990WO1990001842A1 Method and apparatus for accessing a facsimile store and forward network
02/22/1990WO1990001841A1 Transient signal eliminating circuit for telecommunications applications
02/22/1990WO1990001837A1 Automatic balancing circuit for longitudinal transmission system
02/20/1990US4903293 Programmable system controller for remote devices
02/20/1990US4903292 System for transmitting low frequency tones through a digital loop carrier system
02/20/1990US4902965 Consumption meter for accumulating digital power consumption signals via telephone lines without disturbing the consumer
02/15/1990DE3827493A1 Method and arrangement for implementing data connections in a communication switching system
02/14/1990EP0354702A2 Image communication apparatus
02/14/1990EP0354396A2 Radio paging system
02/14/1990EP0354224A1 Nitrogen-containing esters of carboxy-containing interpolymers
02/13/1990US4901344 Telephone system digital channel bank interface
02/13/1990US4901343 Data communication apparatus
02/08/1990WO1990001238A1 Telealarm service using the public telephone network
02/08/1990DE3925499A1 Data telephone set esp. magnetic card operated appts. - sends data via telephone and data lines using switches connected to lines and to voice circuit and to input magnetic card reader or similar
02/07/1990EP0353890A2 Information handling centre telecommunication servers
02/06/1990US4899378 Telephone announcement system
02/06/1990US4899370 Remote control apparatus for electronic equipment
02/06/1990US4899369 Radio-analogue method of audio presentation and control for audiotex services
02/06/1990US4899350 Signal communication capable of avoiding an audible reproduction of a sequence of information signals
02/05/1990EP0283473A4 A telemetry terminal.
02/01/1990DE3826025A1 Method for exchanging data between an access control system and a communication switching system
01/1990
01/31/1990EP0353143A1 Telecommunication terminal with modified function control
01/31/1990EP0352914A2 Telephone handset with full page video display
01/31/1990EP0352913A2 Pocket data receiver with full page visual display
01/31/1990EP0352848A2 System having electronic assembly groups with at least a micro processor
01/31/1990CN1039340A Control system for common line communication of data terminal and telephone
01/31/1990CN1006674B Digitally encoded intercommunication telephone system for neighbourhood telephone service
01/30/1990US4897869 Data communication apparatus
01/30/1990US4897867 Method of and an arrangement for forwarding a customer order
01/30/1990US4897865 Telephone data collection device
01/30/1990US4897862 Acoustic alarm detection system for telephone activation
01/23/1990US4896347 Interactive video communications system
01/17/1990EP0351060A2 Control panel structure for door telephones
01/17/1990EP0351008A2 Transmission system for sending two signals simultaneously on the same communications channel
01/16/1990US4894857 Method and apparatus for customer account servicing
01/16/1990US4894847 High speed half duplex modem with fast turnaround protocol
01/09/1990US4893340 Multijunction unit apparatus for use in a digital network
01/09/1990US4893335 Remote access telephone control system
01/09/1990US4893333 Interactive facsimile system and method of information retrieval
01/09/1990US4893332 Low-powered remote sensor
01/09/1990US4893324 Portable fire detection system
01/09/1990US4893317 Digital signals and frequency correction in a digital wireless system
01/09/1990CA1264355A1 Gateway system and method for interconnecting telephone calls with a digital voice protected radio network
01/03/1990CN1038558A Dynamic callback technique
01/02/1990US4891783 Data terminal device
12/1989
12/28/1989WO1989012944A1 Wide band communication system
12/27/1989CN2050242U Interface device linking alarm and telephone net
12/27/1989CA1264097A1 Voice and data communication system
12/26/1989US4890316 Modem for communicating at high speed over voice-grade telephone circuits
12/21/1989DE3820808A1 Method for reading in data in telephone stations
12/21/1989DE3820112A1 Door intercom system
12/20/1989CN1038182A Computer and telephone apparatus with user friendly computer interface and enhanced integrity features
12/19/1989US4888766 Multi-terminal control system
12/19/1989US4888638 System for substituting television programs transmitted via telephone lines
12/19/1989EP0311643A4 Automatic meter reading system.
12/19/1989CA1263975A1 Telephonic data access and transmission system
12/13/1989EP0345337A1 System for interfacing an alarm reporting device with a cellular radio transceiver
12/12/1989US4887291 System for annunciating emergencies
12/12/1989US4887290 Cellular alarm backup system
12/12/1989CA1263900A1 Subscriber unit for wireless digital telephone system
12/06/1989EP0344672A1 Consumer communication and information system
12/05/1989US4885795 Hospital digital data transfer system
12/05/1989US4885766 Remote control device using a telephone line
12/05/1989US4885755 Method and apparatus for data communication
12/05/1989US4885577 Paging system for providing a data message and a voice message to a unique address of a paging receiver
12/05/1989CA1263753A1 Remote postage meter inspection system
11/1989
11/30/1989DE3817008A1 Method for transmitting information from the inside of a building to the outside
11/29/1989EP0343571A2 Mobile station for an automobile telephone system
11/29/1989EP0097710B1 Telephonic alphanumeric data transmission system
11/28/1989US4884285 (DS) transmitter
11/28/1989US4884059 Apparatus and method for reporting verification testing of a personal emergency response system
11/23/1989EP0343089A1 Telephone interface circuit
11/23/1989EP0342295A2 Interactive call-handling
11/23/1989DE3541548C1 Line unit for telephone/data transmission
11/21/1989US4882506 Low voltage and low power detector circuits
11/16/1989WO1989011195A1 Computer and telephone apparatus with user friendly computer interface and enhanced integrity features
11/16/1989WO1989011194A1 Remote on/off telephone switching system
11/16/1989WO1989011183A1 Multimode modem
11/15/1989CN1037249A Set-top interface transactions in impulse pay per view television system
11/14/1989US4881252 Ice making system
11/14/1989US4881240 AM equalizer circuit for digital systems
11/14/1989US4881129 Facsimile interface device for land-mobile telephones
11/09/1989DE3814728A1 Cordless telephone system
11/08/1989EP0340613A1 Integrated Modem which operates without a dedicated controller
11/02/1989WO1989010670A1 Dynamic callback technique
11/02/1989EP0339697A2 Method and apparatus for teleprinting public services data at the subscriber
11/02/1989EP0339469A2 Method for the utilisation of a telephone exchange with a central signalization channel for the casting of votes
11/02/1989EP0339432A2 Method for a calculator-controlled switching device, especially for a key-telephone exchange, in which data and telephone terminals are connectible alternatively
11/02/1989EP0339212A2 Optical hookswitch assembly for a telephone
11/02/1989EP0339160A1 Method and apparatus for use in a tele-communication system
11/02/1989EP0182780B1 Entrance telephone installation and method, for transmission of alarm signals
10/1989
10/31/1989US4878240 Multi-service telephone switching system
10/31/1989US4878236 Automatic emergency locator system and method
10/31/1989CA1262581A1 Voice and data transmission system
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