Inventor · disambiguated record
Eduard Zwack
Also filed as: ZWACK EDUARD
17 granted patents·1 pending application·585 citations·filing 1974–2002
95Inventor score
Files withSIEMENS AG18
Top patents by PatentIndex Score
18 records- 0198US7372846B2Method for transmitting time information via a data packet networkSIEMENS AG·Filed 2002·Granted May 13, 2008·252 cites·17 claims
- 0295US4893097AMethod for temperature compensation of a voltage-controlled crystal oscillator in a phase control circuitSIEMENS AG·Filed 1988·Granted Jan 9, 1990·89 cites·7 claims
- 0387US5574408AOscillator circuit having a memory that stores the characteristic information of the individual oscillator crystalSIEMENS AG·Filed 1995·Granted Nov 12, 1996·73 cites·27 claims
- 0480US4864253APhase locked loop wherein phase comparing and filtering are performed by microprocessorSIEMENS AG·Filed 1988·Granted Sep 5, 1989·33 cites·18 claims
- 0568US5052028AMethod for synchronizing the phase of clock signals of two clock generators in communications networksSIEMENS AG·Filed 1990·Granted Sep 24, 1991·34 cites·29 claims
- 0668US3984829ACircuit arrangement for converting analog signals into PCM signals and PCM signals into analog signalsSIEMENS AG·Filed 1974·Granted Oct 5, 1976·15 cites·8 claims
- 0763US4049921AMethod for forming a conference connection in a time division multiplex telecommunication switching systemSIEMENS AG·Filed 1975·Granted Sep 20, 1977·10 cites·3 claims
- 0862US4835481ACircuit arrangement for generating a clock signal which is synchronous in respect of frequency to a reference frequencySIEMENS AG·Filed 1987·Granted May 30, 1989·18 cites·3 claims
- 0960US6559696B1Circuit arrangement for generating a clock-pulse signal having a frequency synchronous with a reference clock-pulse signalSIEMENS AG·Filed 2000·Granted May 6, 2003·11 cites·12 claims
- 1053US6922742B2Node device for a serial databus connecting a number of devicesSIEMENS AG·Filed 2001·Granted Jul 26, 2005·2 cites·10 claims
- 1151US6313621B1Method and arrangement for determining the phase difference between two timing signalsSIEMENS AG·Filed 1998·Granted Nov 6, 2001·15 cites·10 claims
- 1246US3993992ACircuit arrangement for converting analog signals into PCM signals and PCM signals into analog signalsSIEMENS AG·Filed 1974·Granted Nov 23, 1976·6 cites·7 claims
- 1344US7436847B2Method for internet-protocol-based transmission of communication dataSIEMENS AG·Filed 2002·Granted Oct 14, 2008·0 cites·9 claims
- 1443US2003035444A1Method for synchronizing a communication system via a packet-oriented data networkSIEMENS AG·Filed 2002·Application pending·0 cites
- 1540US4754478AMethod of adding additional subscribers and signals to existing connectionSIEMENS AG·Filed 1986·Granted Jun 28, 1988·11 cites·5 claims
- 1635US5703480AMethod and arrangement for determining the phase difference between clock signals in a communication equipmentSIEMENS AG·Filed 1996·Granted Dec 30, 1997·6 cites·10 claims
- 1734US5467059ATemperature-stabilized oscillator circuit having heating elements that can be externally influencedSIEMENS AG·Filed 1994·Granted Nov 14, 1995·4 cites·14 claims
- 1832US5430707AMethod and apparatus for communicating operating information between centralized and decentralized equipment of a communication systemSIEMENS AG·Filed 1994·Granted Jul 4, 1995·6 cites·15 claims
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