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)
07/1987
07/16/1987WO1987004313A1 Low speed gate circuit
07/15/1987EP0228954A1 Telephone line interface option module
07/15/1987EP0228794A2 Intelligent synchronous modem and communication system incorporating the same
07/15/1987EP0228634A2 Videotex information utility
07/14/1987US4680790 Bedside control module for healthcare stations and the like
07/14/1987US4680785 Personal-signaling communication system
07/14/1987US4680781 Data telecommunications system and method with universal link establishment
07/14/1987US4680773 Data telecommunications system and method utilizing a multi-mode modem
07/08/1987EP0228096A2 Signal detection and discrimination using waveform peak factor
07/08/1987EP0227825A1 Electronic information dissemination system
07/07/1987US4679229 Ringing detection circuit
07/07/1987US4679227 Ensemble modem structure for imperfect transmission media
07/07/1987US4679226 Computer security guard circuit
07/07/1987US4679186 Alternate self-routing packet switching node having fault detection capabilities
07/07/1987CA1223934A1 Asynchronous transmission system particularly for interactive videotex system
07/01/1987EP0227327A2 Communication systems and terminals therefor
07/01/1987EP0226688A1 Serial link adapter for a communication controller
06/1987
06/30/1987US4677660 Communication apparatus selectively operable in voice-communication or in image-communication
06/30/1987US4677659 Telephonic data access and transmission system
06/30/1987US4677658 Remote dictating apparatus
06/30/1987US4677657 Voice recording card
06/30/1987US4677656 Telephone-radio interconnect system
06/30/1987CA1223681A2 Telephonic alphanumeric data transmission system
06/25/1987DE3642323A1 Data transmission device with data modem controlled via the data line
06/25/1987DE3544999A1 Circuit arrangement for videotex operation in telephone PBX systems, in particular intercom and executive-secretary systems
06/24/1987EP0226561A1 Arrangement for adjusting an impedance network in an integrated semiconductor circuit
06/23/1987US4675863 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
06/18/1987WO1987003764A1 Telephone line interface option module
06/16/1987US4674113 Frequency responsive apparatus for reading a meter over a telephone line
06/16/1987US4674112 Character pattern recognition and communications apparatus
06/16/1987CA1223096A1 Message retrieval system
06/11/1987DE3630709A1 Compact remote transmitter for motion, smoke and temperature data
06/10/1987EP0225084A2 Line Access apparatus
06/10/1987EP0225083A2 Line access apparatus for in-band communication
06/09/1987US4672662 Switching system and method for network having a plurality of terminal control equipment units
06/09/1987US4672654 PBX security system for monitoring security guard tours
06/09/1987US4672653 Remote security system
06/09/1987US4672605 Data and voice communications system
06/09/1987US4672602 Control and routing system
06/09/1987US4672463 Method for emphasizing sharpness in picture scanning recording time in a picture reproducing machine
06/04/1987WO1987003446A1 A telemetry terminal
06/03/1987EP0224149A2 Improved synchronous/asynchronous modem
06/02/1987US4670874 Communications system for transmitting and receiving data and voice signals simultaneously through 2-wire signal lines
06/02/1987CA1222586A1 Personal-servicing communication system
05/1987
05/27/1987EP0223546A2 Telephone line access apparatus
05/27/1987EP0222920A1 Method and apparatus for simultaneously displaying plurality of characters and graphic data on multi-screen display on terminal side in communications system
05/27/1987EP0222919A1 Method and apparatus for displaying character and graphic data simultaneously with video data on single display on terminal side in communications system
05/27/1987EP0222744A1 Meter interface unit for utility meter reading system
05/21/1987WO1987003156A1 Bi-directional data telemetry system
05/19/1987CA1222077A1 Communications system for transmitting and receiving data and voice signals simultaneously through 2-wire signal lines
05/13/1987EP0221589A1 Device for establishing a connection between a telecommunication network and a controllable system, such as a computer system, provided with an access control unit controllable via a separate network terminal
05/12/1987US4665544 Home control system and interphone system
05/12/1987US4665516 Information transport system employing telephone lines
05/07/1987DE3538698A1 Telecontrol system
05/05/1987US4663778 Communication apparatus
05/05/1987US4663777 Apparatus for controlling digital voice recording and playback over telephone lines and adapted for use with standard host computers
05/05/1987US4663675 Apparatus and method for digital speech filing and retrieval
04/1987
04/28/1987US4661972 Mobile telephone system for automatically paging absent mobile subscriber
04/28/1987US4661659 Wireless phone system communicatively combined with a computer
04/28/1987CA1221156A1 Data call transfer preindication
04/22/1987EP0218904A2 Process for modifying operation of application program
04/22/1987EP0218859A2 Signal processor communication interface
04/22/1987EP0218631A1 Telephone system and method for transmitting digital information
04/22/1987CN86106515A Communication interface for signal processor
04/21/1987US4660218 Apparatus for switching telephone line a response device, a data terminal or a telephone
04/21/1987US4659877 Verbal computer terminal system
04/21/1987US4659876 Audiographics communication system
04/21/1987CA1220843A1 Digital terminal keyboard dialing
04/15/1987EP0218113A1 Protocol converting apparatus for videotex system
04/14/1987US4658417 Information transmission/reception system using pushphone and information reception apparatus
04/14/1987US4658290 Television and market research data collection system and method
04/14/1987US4658097 Remote terminal for use with central dictation apparatus
04/14/1987US4658095 Building intercom system
04/08/1987EP0217369A2 Power transmission arrangement for telecommunications systems
04/08/1987EP0217308A2 A method of and an arrangement for forwarding a customer order
04/08/1987CN85107941A New simultaneous voice and data communciations system,with possibility of connection to public or private networks
04/07/1987US4656655 Remote control adapter of electric equipment using telephone lines
04/07/1987US4656654 Computer assisted graphic teleconferencing method and apparatus
04/07/1987US4656652 Emergency warning device for use in a party line telephone system or the like
04/07/1987US4656622 Multiple paths in a self-routing packet and circuit switching network
04/07/1987US4656319 Alarm system tester
04/07/1987US4656318 Modem with power-off ring detection
04/02/1987DE3534868A1 Method for signal and data transmission for featurephone stations connected via a two-wire transmission channel
04/01/1987EP0216515A2 Method of and apparatus for connecting remote users of a telephone trunk interface and the like
04/01/1987EP0216248A1 Videotex terminal with a memory for storing plural picture frames
04/01/1987EP0215905A1 Combined voice/data telephone system
03/1987
03/31/1987US4654869 Information collecting and forwarding apparatus
03/31/1987US4654868 Time independent data transmission system having capability for accessing a plurality of data devices
03/31/1987US4654718 Equipment for notifying the arrival of a correspondence at a facsimile receiver, to the ultimate addressee thereof
03/31/1987US4654638 Security monitoring system
03/31/1987US4654633 Method and apparatus for transforming PRESTEL codes to NAPLPS codes
03/31/1987US4654482 Home merchandise ordering telecommunications terminal
03/31/1987CA1219956A1 Programmable multiple type data modem
03/31/1987CA1219939A1 Exchange system
03/25/1987EP0215309A2 Message taking an retrieval system
03/25/1987CN85106540A System for controlling the activation sequence of a network
03/24/1987US4653090 Terminal for use with a communication system
03/24/1987US4653087 Stereo interface telephone ring detector
03/24/1987US4653086 Communication terminal for processing voice and graphical information
03/24/1987US4653085 Telephone switching system adjunct call processing arrangement
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