| Patents for H04J 7 - Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels (369) |
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| 03/03/1999 | EP0899902A2 Method for transmission of measurement information from connected components to a central station in a point to multipoint communication system |
| 02/25/1999 | WO1999009686A2 A teletransmission network, network elements and a method of identifying the synchronization |
| 01/27/1999 | CN1206521A Method, transmitter and receiver for transmitting training signals in TDMA transmission system |
| 01/21/1999 | WO1998046038A3 Method for transmitting additional data signals and a useful data signal by means of optical links |
| 01/12/1999 | US5859877 Simultaneous analog and digital communication using fractional rate encoding |
| 12/01/1998 | US5844944 System for transmitting data |
| 11/12/1998 | DE19820435A1 Signal transceiver for conductive path system with several logic values |
| 11/11/1998 | EP0876719A1 Method, transmitter and receiver for transmitting training signals in a tdma transmission system |
| 11/04/1998 | CN1198275A Method and apparatus for transporting auxiliary data in audio signals |
| 10/20/1998 | US5825781 Pulse amplitude modulated tone generator |
| 10/15/1998 | WO1998046038A2 Method for transmitting additional data signals and a useful data signal by means of optical links |
| 10/15/1998 | DE19713952C1 Verfahren zur Übertragung von Zusatzdatensignalen und einem Nutzdatensignal über optische Verbindungen A method for transmitting additional data signals and a user data signal over optical links |
| 10/13/1998 | US5822360 Method and apparatus for transporting auxiliary data in audio signals |
| 09/22/1998 | CA2106118C Method and devices for transmitting two heterochronous binary signals simultaneously over the same medium |
| 09/16/1998 | CN1193441A Method for the common transmission of digital and analogue modulated radio broad casting and/or television broadcasting signals |
| 09/03/1998 | WO1998027504A3 Method and apparatus for embedding auxiliary data in a primary data signal |
| 09/02/1998 | EP0862289A2 Method for testing the clocklines and a device for implementing this method |
| 08/26/1998 | CA2228318A1 Method of testing clock paths and network elements for carrying out the method |
| 07/08/1998 | EP0852087A2 Method for the common transmission of digital and analogue modulated radio broadcasting and/ or television broadcasting signals |
| 07/08/1998 | EP0852086A1 Method and apparatus for transporting auxiliary data in audio signals |
| 06/25/1998 | WO1998027504A2 Method and apparatus for embedding auxiliary data in a primary data signal |
| 06/25/1998 | CA2273993A1 Method and apparatus for embedding auxiliary data in a primary data signal |
| 05/22/1998 | WO1998021847A1 Method, transmitter and receiver for transmitting training signals in a tdma transmission system |
| 04/30/1998 | WO1998018223A1 Method and device for combined analogue and digital transmission of an analogue ac measuring signal by means of an optical fibre |
| 04/23/1998 | DE19643374A1 Verfahren und Vorrichtung zur kombinierten Analog- und Digitalübertragung eines analogen AC-Meßsignals mittels eines Lichtwellenleiters Method and apparatus for combined analog and digital transmission of an analog AC measurement signal by means of an optical waveguide |
| 03/03/1998 | US5724340 Apparatus and method for amplitude tracking |
| 11/04/1997 | US5684834 Simultaneous analog and digital communication using fractional rate encoding |
| 08/26/1997 | US5661718 Simultaneous analog and digital communication |
| 08/19/1997 | CA2121935C Simultaneous analog and digital communication with an enhanced data rate during near silence |
| 05/15/1997 | WO1997011539A3 Method for the common transmission of digital and analogue modulated radio broadcasting and/ or television broadcasting signals |
| 03/27/1997 | WO1997011539A2 Method for the common transmission of digital and analogue modulated radio broadcasting and/ or television broadcasting signals |
| 03/13/1997 | WO1997009797A1 Method and apparatus for transporting auxiliary data in audio signals |
| 03/13/1997 | CA2231239A1 Method and apparatus for transporting auxiliary data in audio signals |
| 02/18/1997 | US5604918 Two-line mixed analog/digital bus system and a master station and a slave station for use in such system |
| 12/03/1996 | US5581554 Multiple access telecommunication network |
| 09/24/1996 | US5559791 Companding of voice signal for simultaneous voice and data transmission |
| 07/16/1996 | US5537441 Controlled simultaneous analog and digital communication |
| 07/16/1996 | US5537436 Modem system |
| 06/18/1996 | US5528596 Telecommunications systems |
| 05/15/1996 | DE19535327C1 Verfahren zur gemeinsamen Übertragung digital und analog modulierter Rundfunk- und/oder Fernsehrundfunksignalen Method for the shared transmission digital and analog modulated radio and / or television broadcasting signals |
| 04/23/1996 | US5510919 Optical system for transmitting a multilevel signal |
| 03/12/1996 | US5499244 Packet data reciever with sampled data output and background light cancellation |
| 12/12/1995 | US5475713 Shaped signal spaces in a simultaneous voice and data system |
| 12/06/1995 | CN1113057A Companding of voice signal for simultaneous voice and data transmission |
| 11/22/1995 | CN1112324A Shaped signal spaces in a simultaneous voice and data system |
| 11/21/1995 | US5469430 Method and devices for simultaneous transmission of two heterochronous binary signals on the same transmission medium |
| 11/08/1995 | EP0681378A1 Packet data receiver with sampled data output and background light cancellation |
| 11/07/1995 | CA2044562C Interference source identification |
| 09/05/1995 | US5448555 Simultaneous analog and digital communication |
| 08/15/1995 | US5442626 Digital communications system with symbol multiplexers |
| 08/08/1995 | US5440585 Applications of simultaneous analog and digital communication |
| 07/25/1995 | US5436930 Simultaneous analog and digital communications with a selection of different signal point constellations based on signal energy |
| 06/28/1995 | EP0660546A1 Sub-carrier multiple access network |
| 06/07/1995 | EP0656700A1 Optical system for transmitting a multilevel signal |
| 04/25/1995 | US5410541 System for simultaneous analog and digital communications over an analog channel |
| 04/19/1995 | CN1101773A Applications of simultaneous analog and digital communication |
| 04/19/1995 | CN1101772A Simultaneous analog and digital communication |
| 04/19/1995 | CN1101771A Controlled simultaneous analog and digital communication |
| 03/01/1995 | EP0641101A2 Digital communications system with symbol multiplexers |
| 02/22/1995 | CN1099209A Simultaneous analog and digital communication applications |
| 12/28/1994 | EP0631421A1 Simultaneous analog and digital communication applications |
| 12/28/1994 | EP0631420A1 Simultaneous analog and digital communication |
| 12/27/1994 | US5377194 Multiplexed coded modulation with unequal error protection |
| 12/21/1994 | EP0630136A2 Simultaneous analog and digital communication with improved phase immunity |
| 12/21/1994 | EP0630135A2 Simultaneous analog and digital communication using fractional rate encoding |
| 12/21/1994 | EP0630134A2 Simultaneous analog and digital communication with an enhanced data rate during near silence |
| 12/21/1994 | EP0630133A2 Modem applications of simultaneous analog and digital communication |
| 12/21/1994 | EP0630132A2 Shaped signal spaces in a simultaneous voice and data system |
| 12/21/1994 | EP0630131A1 Companding of voice signal for simultaneous voice and data transmission |
| 12/21/1994 | EP0630130A2 Controlled simultaneous analog and digital communication |
| 12/15/1994 | CA2125510A1 Shaped signal spaces in a simultaneous voice and data system |
| 12/15/1994 | CA2125509A1 Companding of voice signal for simultaneous voice and data transmission |
| 12/15/1994 | CA2125053A1 Simultaneous analog and digital communication |
| 12/15/1994 | CA2124730A1 Simultaneous analog and digital communication applications |
| 12/15/1994 | CA2124377A1 Simultaneous analog and digital communication |
| 12/15/1994 | CA2121936A1 Simultaneous analog and digital communication using fractional rate encoding |
| 12/15/1994 | CA2121934A1 Simultaneous analog and digital communication with improved phase immunity |
| 12/14/1994 | EP0628915A1 A two-lined mixed analog/digital bus system and a master station and a slave station for use in such system |
| 07/26/1994 | USRE34676 Fiber optic digital data transmitting system |
| 07/20/1994 | EP0439539B1 Transmitter, transmission method and receiver |
| 05/18/1994 | EP0597720A2 TDM/TDMA telecommunications systems |
| 05/10/1994 | US5311550 Transmitter, transmission method and receiver |
| 03/29/1994 | US5299044 Ranging method for use in TDMA systems on tree-and-branch optical networks |
| 03/23/1994 | EP0588701A1 Method and device for simultaneous transmission of two heterochronous digital signals via the same link |
| 03/02/1994 | EP0585087A1 Ranging method for use in TDMA systems on tree-and-branch optical networks |
| 02/25/1994 | CA2104650A1 Ranging method for use in tdma systems on tree-and-branch optical networks |
| 10/05/1993 | US5251235 Single receiver for receiving wireless transmission of signals is for use with a serial two-conductor data bus |
| 02/10/1993 | EP0378639B1 An arrangement for wireless transmission of signals received via a serial two-conductor data bus |
| 06/09/1992 | CA1303137C Method and device for adding a low-speed digital channel to the highspeed digital channel of a communications link and removing it |
| 05/29/1992 | WO1992009153A1 Device for the simultaneous transmission of data on a transmission channel |
| 05/14/1992 | DE4035996A1 Verfahren zur simultanen uebertragung von daten auf einem uebertragungskanal Method for the simultaneous transmission of data on a transmission channel |
| 02/13/1992 | DE4025042A1 Information coding and transmission system for image or TV signals - uses combining of code elements for 2 or more parallel lines |
| 12/18/1991 | EP0461884A2 Interference source identification |
| 09/10/1991 | US5048015 Interference source identification |
| 08/07/1991 | EP0439539A1 Transmitter, transmission method and receiver. |
| 06/12/1991 | EP0247081B1 Information transmission system, encoder and decoder |
| 05/02/1991 | WO1991006161A1 Method and apparatus for simultaneously communicating a plurality of signals |
| 11/20/1990 | US4972408 Method and apparatus for combining and for separating a low data rate digital channel with or from the high data rate digital channel of a transmission link |
| 07/25/1990 | EP0378639A1 An arrangement for wireless transmission of signals received via a serial two-conductor data bus. |
| 05/03/1990 | WO1990004893A1 Emitter, transmission method and receiver |