Inventor

Abraham Hoogendoorn

Inventor

Eindhoven, NL

Overview

21→

Patents

1977–2002

Patent span

Physics

Primary field (CPC G)

Patents· 21 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer69%

H04BTransmission12%

H03MCoding8%

G05BControl or regulating systems in general4%

G06FElectric digital data processing4%

G10LSpeech analysis techniques or speech synthesis4%

PatentTitleYear

6,477,003'System for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the medium'2002 6,239,932'Method of and arrangement for formatting a magnetizable medium'2001 6,097,571'Magnetic head and system for controlling the position of a magnetic head'2000 6,061,196'System for recording and/or reproducing information medium for use in the system, and magnetic write head and arrangement for formatting the medium'2000 5,966,276'Magnetic head and system for controlling the position of a magnetic head'1999 5,949,607'System, apparatus and method for recording and reproducing information'1999 5,912,778'System for recording and/or reproducing information medium for use in the system and magnetic head for formatting the medium'1999 5,912,637'Magnetic recording method and apparatus which provide at least two write pulses for each binary signal bit to be recorded'1999 5,831,798'Magnetic head configured to read and/or write information on digital and analog form'1998 5,805,372'Positioning of a head relative to a plurality of tracks'1998 5,559,642'Reproducing device used with a record carrier containing two sides recorded in opposite directions that determines the selection of particular read back characteristics'1996 5,488,663'Encoding methods for generating a digital signal containing modulated bit allocation information, and record carriers containing that signal'1996 5,455,717'Recording device with temperature-dependent write-current control'1995 5,375,171'Transmission system, and transmitter and receiver used in the transmission system for transmitting and receiving digital signals containing modulated bit allocation information'1994 5,325,239'Apparatus for producing recorded tape-like magnetic record carriers, record carrier obtained thereby, and device for reproducing the record carriering device for reproducing the record carrier'1994 5,161,210'Coder 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 thereon'1992 5,083,224'Apparatus for recording an audio signal with protection against re-recording thereof, and recording apparatus which indicates the presence of such protection'1992 4,636,874'System 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 mode'1987 4,439,799'Apparatus for reproducing information recorded in a plurality of adjacent tracks'1984 4,286,318'Control loop'1981 4,057,796'Analog-digital converter'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1999Patents assigned to PHILIPS CORP (15)· patent assignee history

1977–2002Based in Eindhoven, NL· patent location history

1984–1987Based in Vienna, AT· patent location history

1998Patents assigned to U S PHILIP CORP (1)· patent assignee history

2000–2001Patents assigned to ONSTREAM INC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PHILIPS CORP	15	1977–1999
ONSTREAM INC	3	2000–2001
U S PHILIP CORP	1	1998

Locations

Location	Patents	Span
Eindhoven, NL	19	1977–2002
Vienna, AT	2	1984–1987