Inventor

Erik Solhjell

Inventor

Oslo, NO

Overview

31→

Patents

1984–2019

Patent span

Physics

Primary field (CPC G)

Patents· 31 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 transducer55%

G06FElectric digital data processing18%

H04LTransmission of digital information, e.g. telegraphic communication8%

H03KPulse technique5%

G01DMeasuring not specially adapted for a specific variable3%

G03HHolographic processes or apparatus3%

G05BControl or regulating systems in general3%

G09GArrangements or circuits for control of indicating devices using static means to present variable information3%

H04WWireless communication networks3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

10,374,8062-factor authentication for network connected storage device2019 8,254,235'System and method for transfer of data stored in holographic storage medium'2012 7,532,431'Single elevator system and method for a tape automation system with a base unit and one or more add-on units'2009 7,161,756'Method and system for communication between a tape drive and an external device'2007 7,123,444'Tape cassette having an optical signal receiver and a memory for storing information optically transmitted into the cassette'2006 6,166,882'Non-belt drive tape cartridge'2000 5,908,168'Apparatus for storing an increased length of continuous tape medium in reeled form in standardized housing formats'1999 5,872,675'Tape cartridge with integrated mirror tracking mechanism'1999 5,696,537'Mouse for data entry and control with control of ball friction force'1997 5,621,436'Keyboard with integrated mouse for data entry and control'1997 5,583,541'Mouse and trackball design with contact-less roller sensor'1996 5,568,327'Method for determining the tape position using dedicated servo format'1996 5,542,082'Data storage system connected to a host computer system and having removable data storage media and equipped to read a control program from the removable media into storage employing ID comparison scheme'1996 5,457,586'Method and arrangement for positioning a magnetic head relative to the storage medium of a magnetic layer storage'1995 5,394,277'Method for determining servo track pair position and longitudinal tape position for a tape using dedicated servo format'1995 5,392,170'Magnetic tape storage unit with improved ability to read data by using a set of multiple read elements'1995 5,377,057'Method and system for tape edge sensing'1994 5,375,245'Apparatus for automatically reducing the power consumption of a CRT computer monitor'1994 5,357,495'Stacker/autoloader system with intelligent media storage magazine control'1994 5,347,407'Method and system for removing particles without requiring a separate cleaning mechanism from a tape in a tape drive system'1994 5,264,972'Method and apparatus for maintaining tape tension in a belt-driven tape cartridge'1993 5,257,148'Method and apparatus for positioning a magnetic head in a magnetic layer memory system using tracking by reading a spaced pair of corresponding subtracks'1993 5,162,780'Trackball for data entry and control with optimized ball height'1992 4,809,092'Improved method and arrangement for recording digital data on a magnetic recording medium by use of binary data signals and magnetic bias signals'1989 4,803,704'Circuit arrangement for the recognition of impermissable phase errors in a phase locked loop'1989 4,780,888'Method and arrangement for disturbance-proof recognition of data contained in data signals'1988 4,763,216'Cleaning cassette for a magnetic tape recorder means'1988 4,728,899'Circuit arrangement for the conversion of analog signals into binary signals'1988 4,639,796'Arrangement for positioning a transducer to at least one track of a tape-shaped recording medium'1987 4,479,151'Magnetic recording of digital signals on a magnetic medium'1984 4,476,503'Method for the recognition of an edge of a magnetic medium and a device for implementation of the method'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–2000Patents assigned to TANDBERG DATA (23)· patent assignee history

1984–2019Based in Oslo, NO· patent location history

1989Based in Konvallveien, NO· patent location history

1996–1997Patents assigned to TANDBERG DATA STORAGE AS (3)· patent assignee history

2012Patents assigned to GEN ELECTRIC (1)· patent assignee history

2012Patents assigned to HERSHEY JOHN ERIK (1)· patent assignee history

2019Patents assigned to HIDDN SECURITY AS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TANDBERG DATA	23	1984–2000
TANDBERG DATA STORAGE AS	3	1996–1997
GEN ELECTRIC	1	2012
HERSHEY JOHN ERIK	1	2012
HIDDN SECURITY AS	1	2019

Locations

Location	Patents	Span
Oslo, NO	30	1984–2019
Konvallveien, NO	1	1989