Assignee
WANDEL & GOLTERMANN
DE·29 granted patents·396 citations·filing 1975–1993
Top patents by PatentIndex Score
29 records- 0178US5120943AMethod of and apparatus for setting a measuring instrumentWANDEL & GOLTERMANN·Filed 1990·Granted Jun 9, 1992·67 cites·8 claims
- 0269US4275348AMethod of and system for measuring the transmission characteristics of four-terminal networksWANDEL & GOLTERMANN·Filed 1979·Granted Jun 23, 1981·20 cites·20 claims
- 0366US4428076AMethod of and system for evaluating bit errors in testing a signal pathWANDEL & GOLTERMANN·Filed 1981·Granted Jan 24, 1984·29 cites·12 claims
- 0464US5163057AMethod of and circuit arrangement for determining a cell loss and/or a cell insertion during traversal of a cell oriented transmission device by cell structured signalsWANDEL & GOLTERMANN·Filed 1990·Granted Nov 10, 1992·76 cites·12 claims
- 0564US4220849ACircuit arrangement for the control of a digitally settable loadWANDEL & GOLTERMANN·Filed 1978·Granted Sep 2, 1980·7 cites·8 claims
- 0661US3965294AMethod of and apparatus for testing transmission line carrying bipolar PCM signalsWANDEL & GOLTERMANN·Filed 1975·Granted Jun 22, 1976·21 cites·10 claims
- 0758US4075558AMethod of and system for metering a periodically varying voltageWANDEL & GOLTERMANN·Filed 1976·Granted Feb 21, 1978·13 cites·10 claims
- 0853US4514705ALow-noise digitally tunable phase-locked loop frequency generatorWANDEL & GOLTERMANN·Filed 1981·Granted Apr 30, 1985·12 cites·13 claims
- 0951US5307031AStandard or reference transmission line with variable group time delayWANDEL & GOLTERMANN·Filed 1992·Granted Apr 26, 1994·17 cites·8 claims
- 1051US4020425ADigital settable frequency generator with phase-locking loopWANDEL & GOLTERMANN·Filed 1976·Granted Apr 26, 1977·10 cites·13 claims
- 1150US4287469AProcess and circuit arrangement for the measuring of coefficients of message-transmission equipmentWANDEL & GOLTERMANN·Filed 1979·Granted Sep 1, 1981·9 cites·28 claims
- 1250US4156183AMethod of and means for measuring the level of test signals over selected wide band frequency rangesWANDEL & GOLTERMANN·Filed 1977·Granted May 22, 1979·10 cites·14 claims
- 1349US4191930ADigitally settable frequency generatorWANDEL & GOLTERMANN·Filed 1978·Granted Mar 4, 1980·9 cites·10 claims
- 1447US4996699ADigitally settable frequency divider, especially for a frequency synthesizerWANDEL & GOLTERMANN·Filed 1989·Granted Feb 26, 1991·8 cites·15 claims
- 1547US4884180ARegulated direct-current converterWANDEL & GOLTERMANN·Filed 1988·Granted Nov 28, 1989·15 cites·23 claims
- 1646US4697156ADigitally controlled variable frequency synthesizerWANDEL & GOLTERMANN·Filed 1986·Granted Sep 29, 1987·9 cites·18 claims
- 1741US4733395ADigital word generatorWANDEL & GOLTERMANN·Filed 1986·Granted Mar 22, 1988·17 cites·6 claims
- 1835US5736773APhotodiode with antireflection coatingWANDEL & GOLTERMANN·Filed 1991·Granted Apr 7, 1998·5 cites·1 claims
- 1932US4380731ASystem for monitoring the operation of individual connectors in a multipath coupling networkWANDEL & GOLTERMANN·Filed 1980·Granted Apr 19, 1983·9 cites·7 claims
- 2032US4223272AFour-terminal network of adjustable transfer functionWANDEL & GOLTERMANN·Filed 1978·Granted Sep 16, 1980·4 cites·8 claims
- 2131US4370617ASynchronization extractor responsive to digital signalsWANDEL & GOLTERMANN·Filed 1980·Granted Jan 25, 1983·3 cites·8 claims
- 2230US5166514AOptical plug system for optical measuring deviceWANDEL & GOLTERMANN·Filed 1991·Granted Nov 24, 1992·1 cites·8 claims
- 2328US5519645AData averaging and compressing method for measuring instrumentsWANDEL & GOLTERMANN·Filed 1993·Granted May 21, 1996·6 cites·10 claims
- 2426US5430746AMethod of and circuitry for detecting synchronism failure of two word sequencesWANDEL & GOLTERMANN·Filed 1993·Granted Jul 4, 1995·5 cites·3 claims
- 2526US4068172AMethod of and means for measuring distortion of binary and ternary signalsWANDEL & GOLTERMANN·Filed 1976·Granted Jan 10, 1978·1 cites·10 claims
- 2626US4020392AMethod of and system for visually displaying several periodically reproducible input signalsWANDEL & GOLTERMANN·Filed 1976·Granted Apr 26, 1977·0 cites·10 claims
- 2725US4161627AMethod of and system for generating digital test signalsWANDEL & GOLTERMANN·Filed 1977·Granted Jul 17, 1979·4 cites·10 claims
- 2823US4325024ASystem for measuring signal levelsWANDEL & GOLTERMANN·Filed 1980·Granted Apr 13, 1982·6 cites·15 claims
- 2916US4986621AOptical head adapted to receive a light guide plugWANDEL & GOLTERMANN·Filed 1989·Granted Jan 22, 1991·3 cites·8 claims
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