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)
06/1985
06/25/1985US4525779 Conversational video system
06/19/1985EP0145605A2 Analog signal verification circuit
06/19/1985EP0145332A2 Digital audio transmission
06/18/1985US4524384 Video and audio security system
06/18/1985US4524244 Digital and voice telecommunication apparatus
06/18/1985US4524243 Personal alarm system
06/12/1985EP0144085A2 Television and market research data collection system and method
06/12/1985EP0144042A2 A method and an apparatus for maintaining digital communication in a single session
06/11/1985US4523311 Simultaneous transmission of speech and data over an analog channel
06/05/1985EP0143527A2 Video game system
06/04/1985US4521648 Automatic dialer for telephone numbers
06/04/1985US4521645 Fire alarm system
06/04/1985US4521644 Method of establishing communication
06/04/1985US4521643 Apparatus for transmitting information via telephone lines
05/1985
05/23/1985WO1985002311A1 Multimode data communication system
05/22/1985EP0142302A2 Programmable multiple type data modem
05/22/1985EP0141911A2 Telecommunications apparatus
05/21/1985US4518989 Buffer memory dispersion type video/audio transmission system with spatially and timewise divided inter-office junction lines
05/21/1985US4518823 Modem cartridge and connection for program cartridge type computers
05/21/1985CA1187636A1 Automatic dialler for telephone numbers
05/14/1985US4517413 Telephone triggered switching system for transcriber
05/07/1985US4516239 System, apparatus and method for controlling a multiple access data communications system including variable length data packets and fixed length collision-free voice packets
05/07/1985US4515995 Telephone answering machine with apparatus for selecting particular outgoing message in response to incoming call on a particular line
05/07/1985CA1186762A1 Device for minimizing far-end crosstalk between half- duplex digital transmission lines
05/02/1985EP0139405A2 Data transmission system
05/02/1985EP0138988A1 Simultaneous transmission of speech and data over an analog channel.
05/02/1985EP0138975A1 Simultaneous transmission of speech and data over an analog channel
04/1985
04/30/1985CA1186382A1 Automatic answer/originate mode selection in modem
04/30/1985CA1186381A1 Radio paging system capable of accepting message with access of paging receiver
04/30/1985CA1186378A1 Local orderwire facility for fiber optic communication system
04/25/1985WO1985001852A1 Centerpoint automatic meter reading system
04/25/1985WO1985001848A1 Multiplexer system for automatic meter reading
04/24/1985EP0138364A2 Multifrequency tone distribution using a conference arrangement
04/23/1985CA1186081A2 Modem with improved escape sequence mechanism
04/23/1985CA1186080A1 Modem with low part count and improved demodulator
04/23/1985CA1186077A1 Interleaved digital data and voice communications system apparatus and method
04/16/1985US4512017 Digital dual channel communication terminal
04/16/1985US4512016 Digital communication station signaling control
04/16/1985US4512013 Simultaneous transmission of speech and data over an analog channel
04/16/1985US4511970 Portable terminal device
04/16/1985CA1185721A1 Telephone interfaced recording and playback apparatus
04/16/1985CA1185712A1 Simultaneous transmission of voice and data signals over a digital channel
04/09/1985US4510596 In a PCM switching system
04/09/1985US4510350 Personal alarm apparatus including wrist supported transmitter and receiver/telephone interface circuit
04/09/1985CA1185352A1 Monitoring system
04/02/1985US4509164 Microprocessor based digital to digital converting dataset
04/02/1985US4508935 Cordless telephone having a remote control function
04/02/1985CA1185025A1 Data under voice communications system
03/1985
03/27/1985EP0135342A2 Exchange system
03/26/1985CA1184646A1 Monitoring system
03/26/1985CA1184611A1 Radio pager with display device
03/20/1985EP0134544A2 Variable band distributed switching node with dynamic hybrid-frame management
03/19/1985US4506111 Text mailing system using a telephone line
03/14/1985WO1985001169A1 Method for transmission of alarm signals
03/12/1985US4504860 Method and process for transmitting an image
03/05/1985US4503288 Intelligent telephone
02/1985
02/28/1985EP0118507A4 Electronic locating system for persons receiving telephone calls.
02/26/1985CA1183292A1 Telephone apparatus capable of inputting character data
02/19/1985US4500752 Telecontrol system for an audio recorder of a radio telephone
02/19/1985US4500751 Data communication system
02/13/1985EP0132464A1 Video and data distribution module with subscriber terminal
02/12/1985US4499568 Process for the teledistribution of recorded information and a system for performing this process
02/05/1985CA1182229A1 Remote meter reader and method for reading meters over non-dedicated telephone lines
02/05/1985CA1182179A1 Decoder for transmitted message deactivation code
02/05/1985CA1182178A1 Pager with visible display indicating status of memory
01/1985
01/29/1985CA1181876A1 Method and apparatus for efficient statistical multiplexing of voice and data signals
01/29/1985CA1181840A1 Self-switched data port in-band signaling protocol
01/29/1985CA1181818A1 Noise detector and signal receiver arrangement for a frequency modulated receiver
01/23/1985EP0131662A1 Distributed network synchronization system
01/22/1985US4495620 Transmitting data on the phase of speech
01/22/1985US4495596 Treating coffee particulates with a coffee aroma enriched carrie oil
01/22/1985US4495386 Telephone extension system utilizing power line carrier signals
01/22/1985CA1181512A1 Digital information switching system
01/15/1985US4494231 Time division switching system for circuit mode and packet mode channels
01/15/1985US4493948 Transparent secondary information transmission system for an information transmission system
01/15/1985US4493947 Security device utilizing conventional telephone lines
01/09/1985EP0130928A1 Telephone-computer terminal unit with a single decimal keyboard and a switchable local current supply
01/09/1985EP0130888A1 Device for transmitting an alarm signal via telephone channels between a transmitter station and a receiver station
01/09/1985EP0130260A1 Interface module for telephone lines
01/08/1985US4492820 Telephone alarm system
01/02/1985CA1180412A Alarm data concentration and gathering system
01/02/1985CA1180407A Data transmission systems
01/01/1985US4491690 Remote control system for use with a telephone
12/1984
12/25/1984US4490579 Auto-dialing pager receiver
12/20/1984WO1984005004A1 Test set
12/19/1984EP0128554A2 Master/slave converter system
12/19/1984EP0128481A2 Television viewer data collection system
12/18/1984US4489220 In an automatic utility meter reading system
12/18/1984CA1179797A1 System for transmitting emergency calls from persons requiring assistance
12/18/1984CA1179737A1 Pager with visible display indicating unread messages
12/18/1984CA1179735A1 Encoder for transmitted message activation code
12/18/1984CA1179734A1 Encoder for transmitted message deactivation code
12/11/1984US4488294 Establishing and supporting data traffic in private branch exchanges
12/11/1984US4488287 Combining and splitting of voice and data from multiple terminal sources and electronic PABX for same
12/11/1984US4488274 Remote dictation transcription system
12/11/1984US4488003 Data communication system
12/11/1984US4488002 Line control of switched network data sets
12/04/1984US4486878 Digital telephone exchange with means for processing packet-switched data
12/04/1984US4486625 Computerized measurement response system
12/04/1984CA1179077A1 Emergency dialer system
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