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)
07/1991
07/30/1991US5036513 Method of and apparatus for integrated voice (audio) communication simultaneously with "under voice" user-transparent digital data between telephone instruments
07/30/1991US5036314 Method and system for the integrated supply of telematic services and graphic information to user terminals, particularly for advertising purposes
07/25/1991WO1991011068A1 Data transmission and storage
07/24/1991EP0438035A2 Microprocessor-controlled doorkeeper lodge system intercoupling at least a door-keeper lodge with one or more coded-access apartments
07/24/1991EP0437489A1 A multi-purpose communications device
07/23/1991US5034916 Fast contact conversational video system
07/16/1991US5033080 Method and apparatus for identifying the source of page communication in a party-line intercom paging system
07/16/1991US5033078 Communication apparatus including facsimile and telephone functions
07/16/1991US5033077 Voice message delivery to unattended station
07/16/1991US5033062 Digital modem
07/16/1991US5032820 Two-wire television interphone system
07/16/1991CA1286391C Signaling arrangement
07/11/1991WO1991010309A1 Integrated data communication system
07/11/1991WO1991010308A1 Automatic data restoral for modems
07/10/1991EP0436238A1 Arrangement for connecting a telefax device or a telephone set to a telecommunication line
07/09/1991US5031209 Automatic meter reader with microcomputer control system
07/09/1991US5031208 Data communication system and apparatus for transmitting data on a line and interrupting data transmission when an accounting pulse is detected on the line
07/09/1991US5031206 Method and apparatus for identifying words entered on DTMF pushbuttons
07/03/1991EP0435614A2 Communicating apparatus capable of utilizing a portable device to designate its communicating mode
07/03/1991EP0435458A1 Speech/voiceband data discriminator
07/03/1991CN1013073B Control system for common line communication of data terminal and telephone
07/02/1991US5029333 Communications system
07/02/1991US5029290 Emergency alert system
07/02/1991US5029201 Auto-answer videotex terminal
07/02/1991CA1285669C Remote subscriber interaction system
07/02/1991CA1285668C System for communicating digital data on standard office telephone system
07/02/1991CA1285648C Electronic information dissemination system
07/02/1991CA1285617C Apparatus and method for a cellular freeway emergency telephone service
06/1991
06/27/1991WO1991009378A1 Full-duplex video communication system
06/26/1991EP0434435A2 Microphone-controller with multifunction single conductor
06/26/1991EP0434351A2 Facsimile terminal equipment
06/26/1991EP0434231A2 Paging accessory for portable computing devices
06/26/1991CN2079838U Auto-alarm device for telephonic circuit
06/25/1991US5027383 Supervised, interactive alarm reporting system
06/21/1991WO1991009485A1 Microphone-controller with multifunction, single conductor
06/20/1991DE3938479A1 Data protecting appts. for data network - uses programme segment capable of withholding permission for use of data from transmission side if user is unauthorised
06/19/1991EP0433153A1 Telecommunication and management terminal connectable to the telephone network and an automatic calling device for such a terminal
06/19/1991EP0433078A2 Data transfer method and apparatus
06/18/1991US5025470 Automatic meter reading system with malfunction protection
06/18/1991US5025469 Method and apparatus for reducing the turn-around time in facsimile transmission
06/18/1991US5025443 Digital data over voice communication
06/15/1991CA2019019A1 Method and system for high speed data transfer
06/13/1991WO1991008637A1 Payphone system
06/13/1991DE4039696A1 Door intercom installation with central ID code generator - recognises key operated by visitor and communicates corresp. code to recognition units in all apartments
06/12/1991EP0431007A1 Data capable radio communication console
06/12/1991EP0430993A1 Data message waiting
06/12/1991CN1052089A Apparatus for guard against commit crime in elevator
06/11/1991US5023906 Method for monitoring telephone call progress
06/11/1991US5023905 Pocket data receiver with full page visual display
06/11/1991US5023903 Voice and data telecommunications apparatus
06/11/1991US5023901 Surveillance system having a voice verification unit
06/09/1991WO1991009478A1 Optical fibre communications system
06/08/1991WO1991009479A1 Communications system
06/05/1991EP0430217A2 Facsimile device and automatic receiving method thereof
06/05/1991EP0430213A2 A multimedia protocol interface for 64 Kbit/s data flow
06/05/1991EP0429571A1 Device for telecommunication systems
06/04/1991US5022072 Communication apparatus
06/04/1991US5022071 Two-way voice & digital data analyzer for telephones
06/04/1991US5022026 Method of throughconnecting wideband connections in a digital time switch module between subscribers, and a device for carrying out the method
06/04/1991US5022024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
06/04/1991US5021892 Image processing device of multifunctional type
06/04/1991US5021890 Method of and apparatus for facsimile communications
06/04/1991US5021889 Facsimile apparatus
05/1991
05/30/1991WO1991007838A1 Remote access telephone control system
05/29/1991EP0429364A1 Supervisory alarm transmission and remote alarm receipt devices
05/29/1991CN1051837A Appangement for connecting telefax device or telephone set to telecommunication line
05/28/1991US5020101 Musicians telephone interface
05/28/1991US5020096 Image communication system having improved line control
05/22/1991EP0427760A1 Method and apparatus for accessing a facsimile store and forward network.
05/22/1991CN2077622U Multifunctional alarming telephone
05/22/1991CN1051647A Television, telephone and microcomputer network system
05/21/1991US5018192 Utility meter to telephone line interface
05/21/1991US5018190 Device to block unauthorized modem access over a PBX line
05/21/1991US5018189 Communication apparatus with telephone and data communication capability
05/21/1991US5018188 Microphone-controller with multifunction, single conductor
05/21/1991US5018141 Circuit for separating voice, data and signaling information
05/21/1991US5018072 Optically readable mail system with general and receiver specific information
05/21/1991US5017915 Method of enhancing communication setup between a communication station and a telecommunications network
05/17/1991WO1991007833A1 Identifying telephone controller system
05/17/1991CA2068893A1 Identifying telephone controller system
05/16/1991WO1991007044A1 Data and voice transmission over a cellular telephone system
05/16/1991WO1991007018A1 Transmission of broadband signals
05/16/1991DE4015466C1 Entry phone esp. for apartment block - has individual and common leads with mains supply unit switchable into latter
05/16/1991CA2072634A1 Transmission of broadband signals
05/15/1991EP0427447A2 Karaoke music reproduction device
05/15/1991EP0427228A2 Threshold value control system in a receiver circuit
05/14/1991US5016270 Expanded telephone data organization system
05/14/1991US5016192 Videotex terminal with a memory for storing plural picture frames
05/14/1991CA1284211C Cable television system selectively distributing pre-recorder video and audio messages
05/14/1991CA1284191C Remote confinement system
05/10/1991WO1991007839A1 Computer and telephone apparatus with user friendly computer interface and enhanced integrity features
05/08/1991EP0426361A2 Coordinated voice and data display in a multiplex communication system
05/08/1991EP0426336A2 Compression of a PCM facsimile signal for transmission in a packet switching network
05/08/1991CA2029397A1 Arrangement for connecting a telefax device or a telephone set to a telecommunication line
05/07/1991US5014306 Voice and data telephone communication system and method
05/07/1991US5014299 Modem coupler for multi-line key telephone system
05/07/1991US5014298 Voice-data telephonic control system
05/07/1991US5014296 Facsimile terminal device having voice message recording capability
05/07/1991US5014125 Television system for the interactive distribution of selectable video presentations
05/02/1991WO1991006067A1 Data collection/transmission device and data collection system
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