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)
01/1981
01/06/1981US4243973 Home integrated signal system
12/1980
12/23/1980US4241237 Apparatus and method for remote sensor monitoring, metering and control
12/09/1980US4238851 Packet transmission system
12/09/1980CA1091358A1 Information handling system and terminal apparatus therefor
12/02/1980US4237344 Rapid response health care communications system
11/1980
11/27/1980WO1980002628A1 Device control system
11/26/1980EP0019250A1 Circuitry for telephone sets connected to PCM terminal lines
11/26/1980EP0019245A1 Device control system
11/14/1980EP0016155A4 Remote supervisory system.
11/14/1980EP0016125A4 Method and system for subscription television billing and access.
11/12/1980EP0018525A1 Circuitry for a digital telephone subscriber station
11/12/1980EP0018517A1 Diagnostic and alarm apparatus for a data communication network
11/04/1980US4232295 Jukebox polling system
11/04/1980US4232196 Video telephone apparatus
11/04/1980US4232195 Telephone responder apparatus
11/04/1980CA1089134A1 Telephone station set interface circuit
10/1980
10/29/1980EP0017715A2 Processing, recording and transmitting system for key-board entered data
10/28/1980US4230903 Data transmission system
10/28/1980CA1088682A1 Integrated telephone and facsimile apparatus
10/21/1980CA1088234A1 Test circuit for a protective coupler
10/07/1980US4227052 Method and means for reducing false alarm rates in security systems
10/01/1980EP0016281A1 A data carrier system, especially a subscriber/digital data carrier system, and a frequency synthesizer suitable therefor
10/01/1980EP0016155A1 Remote supervisory system.
10/01/1980EP0016125A1 Method and system for subscription television billing and access.
09/1980
09/30/1980US4225918 System for entering information into and taking it from a computer from a remote location
09/30/1980US4225884 Method and system for subscription television billing and access
09/23/1980US4224641 Abnormality indication system of facsimile apparatus
09/23/1980US4224478 Data transmission circuit for establishing a bidirectional data path in a telephone system
09/16/1980US4223183 Telephone controlled order entry system
09/09/1980US4221938 Central control system for a dictation device with plural dictators and plural recorders
09/03/1980EP0014774A1 Apparatus and method for the transmission of data (information)
08/1980
08/26/1980US4219698 Remotely actuated telephone alarm system
08/12/1980CA1083732A1 Apparatus for the direct connection of ancillary equipment to a telephone network
08/12/1980CA1083489A1 Touch button switch for dictation handset
08/06/1980EP0013982A1 Method and apparatus for remote sensor monitoring, metering and control
08/05/1980CA1083273A1 Data transmission system
07/1980
07/29/1980US4215251 Switching apparatus selectively utilizing a regenerative repeater
07/29/1980US4215246 Dial pulse signaling arrangement
07/29/1980US4215243 Automatic modem identification system
07/22/1980US4214123 Bidirectional telewriting system operating in an alternating mode over a single carrier
07/09/1980EP0013024A1 Dictate station identifier
07/09/1980EP0012979A1 Method for the transmission of several signals via a lightwave guide link, in particular between an exchange and a subscriber's connection
06/1980
06/17/1980CA1079842A1 Acoustic measuring system
06/10/1980US4207598 Automatic mail sending system
06/03/1980US4206444 Remote power controller utilizing communication lines
06/03/1980CA1078968A1 Bidirectional data transfer and storage system
05/1980
05/28/1980EP0011070A1 Arrangement for the remote display of progressive information
05/20/1980CA1078049A1 Automatic page
05/13/1980US4203006 Direct access coupler
05/06/1980US4201887 Data telecommunications terminal
04/1980
04/17/1980WO1980000757A1 Subscription system using a plurality of terminals
04/16/1980EP0009626A2 Communication system for fixed and mobile subscribers
04/08/1980CA1075364A1 Multiport programmable digital data set
04/08/1980CA1075361A1 Data transmission, particularly with delta modulation
03/1980
03/20/1980WO1980000517A1 Communication apparatus for the handicapped
03/19/1980EP0008695A1 Circuit arrangement for telephonic switching systems, particularly private branch exchanges, with auxiliary data traffic, e.g. with teleprinters
03/11/1980US4193121 Information handling apparatus having multiple ports distributed around shifting register rings
03/04/1980US4191855 Full duplex audio response device
03/04/1980US4191854 Telephone-coupled visual alphanumeric communication device for deaf persons
02/1980
02/21/1980WO1980000290A1 Remote supervisory system
02/07/1980WO1980000209A1 Method and system for subscription television billing and access
01/1980
01/15/1980US4184053 Ringing signal detector
01/09/1980EP0006244A1 Telecommunication system
01/09/1980EP0006144A1 Circuit arrangement for transmission of signals between a data circuit terminating equipment and a data terminal equipment
01/08/1980CA1069630A1 Intercom system for a key telephone system
12/1979
12/25/1979US4180709 Data collection system using telephone lines
12/12/1979EP0005842A1 High speed central office scanner
12/12/1979EP0005770A1 Arrangement for a modem
12/11/1979US4178480 Signal multiplexing circuit
12/04/1979CA1067632A1 Call progress signal detector
11/1979
11/27/1979US4176254 Emergency roadside telephone system
11/20/1979US4175216 Intercom calling apparatus in a key telephone system
11/13/1979US4174064 Energy control system providing selective control of remote zone heating or cooling from a central location
10/1979
10/30/1979US4172967 Automatic answering device for use in live speech communication and circuit components thereof
10/16/1979CA1064593A1 Operating condition data communication system
10/09/1979CA1064172A1 Apparatus for suppressing background noise in a digital telephone system
09/1979
09/25/1979CA1063270A1 Remote data line monitor
09/25/1979CA1063269A1 Data transmission systems
09/11/1979US4167732 Multi-apartment building combination communication and security circuit
08/1979
08/21/1979US4165446 Data transmission systems (using internal systems equipment, services and procedures of telephone companies)
08/21/1979CA1061002A1 Method for communicating text commands and instructions using conventional coded text characters and a structure for decoding and presenting command and instruction signals
08/21/1979CA1060976A1 Time division switching network for switching multirate multiplexed data
07/1979
07/31/1979US4163254 Method and system for subscription television billing and access
07/17/1979US4161721 Alarm device having code verification system
07/12/1979WO1979000422A1 A method and an apparatus for transferring digital information in a telephone system
07/11/1979EP0003009A2 A method and an apparatus for transferring digital information in a telephone system
07/10/1979US4160877 Multiplexing of bytes of non-uniform length with end of time slot indicator
07/03/1979US4160124 Multiple dial adapter
06/1979
06/26/1979US4159530 Data collection system for use with a system of flexible working hours
06/13/1979EP0002247A1 Apparatus for transmitting characters, applicable to a push button telephone set
06/12/1979CA1056505A1 Receiver for voice response system
06/12/1979CA1056309A1 Power line communication system
04/1979
04/24/1979US4151371 Remote meter reading apparatus comprising interphone means
04/24/1979CA1053389A1 Mfc receiver digital signal processing
04/24/1979CA1053155A1 Central dictation system
04/17/1979US4150254 Telephone system for selecting and reproducing text on a screen
04/03/1979US4147893 Gauging system providing remote readout of liquid levels in gasoline storage tanks
03/1979
03/27/1979US4146754 Telephone signalling method and apparatus
03/13/1979US4144415 Key telephone system paging lockout circuit
03/13/1979CA1050626A1 Portable tone data transmitter
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