Inventor · disambiguated record
Abraham Hoogendoorn
Also filed as: HOOGENDOORN ABRAHAM
21 granted patents·721 citations·filing 1975–2000
96Inventor score
Top patents by PatentIndex Score
21 records- 0198US5161210ACoder for incorporating an auxiliary information signal in a digital audio signal, decoder for recovering such signals from the combined signal, and record carrier having such combined signal recorded thereonPHILIPS CORP·Filed 1989·Granted Nov 3, 1992·382 cites·14 claims
- 0294US5083224AApparatus for recording an audio signal with protection against re-recording thereof, and recording apparatus which indicates the presence of such protectionPHILIPS CORP·Filed 1990·Granted Jan 21, 1992·85 cites·23 claims
- 0391US4636874ASystem for reproducing information signals on a magnetic tape which incrementally adjusts, in a plurality of steps the speed of the magnetic tape and the positioning and rotational speed of the magnetic head upon a change of modePHILIPS CORP·Filed 1984·Granted Jan 13, 1987·47 cites·16 claims
- 0480US4286318AControl loopPHILIPS CORP·Filed 1979·Granted Aug 25, 1981·34 cites·11 claims
- 0577US5455717ARecording device with temperature-dependent write-current controlPHILIPS CORP·Filed 1993·Granted Oct 3, 1995·32 cites·3 claims
- 0670US6477003B1System for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the mediumFiled 2000·Granted Nov 5, 2002·7 cites·2 claims
- 0764US5559642AReproducing device used with a record carrier containing two sides recorded in opposite directions that determines the selection of particular read back characteristicsPHILIPS CORP·Filed 1994·Granted Sep 24, 1996·12 cites·17 claims
- 0863US5831798AMagnetic head configured to read and/or write information on digital and analog formPHILIPS CORP·Filed 1997·Granted Nov 3, 1998·17 cites·1 claims
- 0962US4439799AApparatus for reproducing information recorded in a plurality of adjacent tracksPHILIPS CORP·Filed 1981·Granted Mar 27, 1984·13 cites·5 claims
- 1062US4057796AAnalog-digital converterPHILIPS CORP·Filed 1975·Granted Nov 8, 1977·12 cites·14 claims
- 1159US5949607ASystem, apparatus and method for recording and reproducing informationPHILIPS CORP·Filed 1996·Granted Sep 7, 1999·14 cites·14 claims
- 1255US6097571AMagnetic head and system for controlling the position of a magnetic headONSTREAM INC·Filed 1998·Granted Aug 1, 2000·11 cites·11 claims
- 1347US5912778ASystem for recording and/or reproducing information medium for use in the system and magnetic head for formatting the mediumPHILIPS CORP·Filed 1997·Granted Jun 15, 1999·11 cites·20 claims
- 1447US5805372APositioning of a head relative to a plurality of tracksU S PHILIP CORP·Filed 1996·Granted Sep 8, 1998·9 cites·20 claims
- 1546US5325239AApparatus for producing recorded tape-like magnetic record carriers, record carrier obtained thereby, and device for reproducing the record carriering device for reproducing the record carrierPHILIPS CORP·Filed 1992·Granted Jun 28, 1994·5 cites·34 claims
- 1642US6239932B1Method of and arrangement for formatting a magnetizable mediumONSTREAM INC·Filed 1998·Granted May 29, 2001·5 cites·8 claims
- 1742US6061196ASystem for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the mediumONSTREAM INC·Filed 1997·Granted May 9, 2000·5 cites·18 claims
- 1839US5966276AMagnetic head and system for controlling the position of a magnetic headFiled 1996·Granted Oct 12, 1999·4 cites·13 claims
- 1937US5375171ATransmission system, and transmitter and receiver used in the transmission system for transmitting and receiving digital signals containing modulated bit allocation informationPHILIPS CORP·Filed 1993·Granted Dec 20, 1994·8 cites·23 claims
- 2036US5488663AEncoding methods for generating a digital signal containing modulated bit allocation information, and record carriers containing that signalPHILIPS CORP·Filed 1994·Granted Jan 30, 1996·7 cites·20 claims
- 2126US5912637AMagnetic recording method and apparatus which provide at least two write pulses for each binary signal bit to be recordedPHILIPS CORP·Filed 1996·Granted Jun 15, 1999·1 cites·21 claims
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