Inventor
ZWACK EDUARD
DE17 patents
Patents
17 patentsUS7372846B2May 13, 2008
Method for transmitting time information via a data packet network
SIEMENS AG252 citations98
US5574408ANov 12, 1996
Oscillator circuit having a memory that stores the characteristic information of the individual oscillator crystal
SIEMENS AG73 citations95
US4893097AJan 9, 1990
Method for temperature compensation of a voltage-controlled crystal oscillator in a phase control circuit
SIEMENS AG89 citations95
US5052028ASep 24, 1991
Method for synchronizing the phase of clock signals of two clock generators in communications networks
SIEMENS AG34 citations92
US4864253ASep 5, 1989
Phase locked loop wherein phase comparing and filtering are performed by microprocessor
SIEMENS AG33 citations92
US6313621B1Nov 6, 2001
Method and arrangement for determining the phase difference between two timing signals
SIEMENS AG15 citations83
US6559696B1May 6, 2003
Circuit arrangement for generating a clock-pulse signal having a frequency synchronous with a reference clock-pulse signal
SIEMENS AG11 citations74
US4049921ASep 20, 1977
Method for forming a conference connection in a time division multiplex telecommunication switching system
SIEMENS AG10 citations73
US3984829AOct 5, 1976
Circuit arrangement for converting analog signals into PCM signals and PCM signals into analog signals
SIEMENS AG15 citations73
US4835481AMay 30, 1989
Circuit arrangement for generating a clock signal which is synchronous in respect of frequency to a reference frequency
SIEMENS AG18 citations72
US4754478AJun 28, 1988
Method of adding additional subscribers and signals to existing connection
SIEMENS AG11 citations64
US6922742B2Jul 26, 2005
Node device for a serial databus connecting a number of devices
SIEMENS AG2 citations62
US5703480ADec 30, 1997
Method and arrangement for determining the phase difference between clock signals in a communication equipment
SIEMENS AG6 citations62
US5467059ANov 14, 1995
Temperature-stabilized oscillator circuit having heating elements that can be externally influenced
SIEMENS AG4 citations62
US3993992ANov 23, 1976
Circuit arrangement for converting analog signals into PCM signals and PCM signals into analog signals
SIEMENS AG6 citations62
US5430707AJul 4, 1995
Method and apparatus for communicating operating information between centralized and decentralized equipment of a communication system
SIEMENS AG6 citations57
US7436847B2Oct 14, 2008
Method for internet-protocol-based transmission of communication data
SIEMENS AG0 citations51