Assignee
ARCHIVE CORP
US·38 granted patents·1,245 citations·filing 1981–1993
Top patents by PatentIndex Score
38 records- 0194US4833418ACompensation circuit for nullifying differential offset voltage and regulating common mode voltage of differential signalsARCHIVE CORP·Filed 1988·Granted May 23, 1989·138 cites·13 claims
- 0293US5157564AStorage module changer for a computer data storage driveARCHIVE CORP·Filed 1990·Granted Oct 20, 1992·76 cites·7 claims
- 0392US5386545ATarget management method for data backup to a shared transfer station, multiple media element deviceARCHIVE CORP·Filed 1992·Granted Jan 31, 1995·150 cites·28 claims
- 0491US4644420ACircuit and methodology for reading and tracking binary data from magnetic tape independently of the data pattern on the tapeARCHIVE CORP·Filed 1984·Granted Feb 17, 1987·39 cites·20 claims
- 0589US5285333AMass storage and retrieval system for magnetic tape cartridgesARCHIVE CORP·Filed 1991·Granted Feb 8, 1994·70 cites·10 claims
- 0689US5253126ARaw error monitoring and reportingARCHIVE CORP·Filed 1991·Granted Oct 12, 1993·50 cites·8 claims
- 0788US5371636AMechanisms for a closed loop head positioner for streaming tape drivesARCHIVE CORP·Filed 1992·Granted Dec 6, 1994·49 cites·17 claims
- 0888US5191492AMechanisms for a closed loop head positioner for streaming tape drivesARCHIVE CORP·Filed 1992·Granted Mar 2, 1993·46 cites·2 claims
- 0988US5182687AMethod and apparatus for aligning cartridges with a cartridge insertion slotARCHIVE CORP·Filed 1990·Granted Jan 26, 1993·48 cites·13 claims
- 1087US5050020ACartridge loader for loading each of a plurality of cartridges into a cartridge insertion slotARCHIVE CORP·Filed 1989·Granted Sep 17, 1991·35 cites·19 claims
- 1187US5006819ATrack and hold phase locked loop circuitARCHIVE CORP·Filed 1990·Granted Apr 9, 1991·66 cites·11 claims
- 1284US4466027ADigital tape erasure conditioning systemARCHIVE CORP·Filed 1981·Granted Aug 14, 1984·27 cites·13 claims
- 1382US4414593AStreaming cartridge tape driveARCHIVE CORP·Filed 1981·Granted Nov 8, 1983·24 cites·21 claims
- 1481US5109308AStationary head tape drive with a movable door opening mechanismARCHIVE CORP·Filed 1989·Granted Apr 28, 1992·29 cites·1 claims
- 1580US4858039AStreaming tape drive with direct block addressabilityARCHIVE CORP·Filed 1988·Granted Aug 15, 1989·32 cites·26 claims
- 1674US5101311ATape and mechanism protection methods for DAT drivesARCHIVE CORP·Filed 1989·Granted Mar 31, 1992·20 cites·8 claims
- 1772US5255130AAdjustable write equalization for tape drivesARCHIVE CORP·Filed 1991·Granted Oct 19, 1993·23 cites·14 claims
- 1872US5163136ASystem for assembling playback data frames using indexed frame buffer group according to logical frame numbers in valid subcode or frame headerARCHIVE CORP·Filed 1989·Granted Nov 10, 1992·50 cites·3 claims
- 1970US5257091AOptical alignment system for aligning a multiple gap tape head assemblyARCHIVE CORP·Filed 1992·Granted Oct 26, 1993·21 cites·10 claims
- 2070US5081547AApparatus and method for automatic adjustment of read amplitude threshold in a digital tape driveARCHIVE CORP·Filed 1989·Granted Jan 14, 1992·17 cites·14 claims
- 2170US5001580AMethod to compensate for tape slope and head azimuth errorsARCHIVE CORP·Filed 1989·Granted Mar 19, 1991·17 cites·6 claims
- 2270US4833558AHead positioning assemblyARCHIVE CORP·Filed 1986·Granted May 23, 1989·20 cites·26 claims
- 2368US5237469AStationary head cartridge tape drive with moveable x-y table and methodARCHIVE CORP·Filed 1991·Granted Aug 17, 1993·19 cites·35 claims
- 2466US5381292AMethod for self-cleaning dat drive tape headsARCHIVE CORP·Filed 1993·Granted Jan 10, 1995·15 cites·13 claims
- 2562US5267096AAdjustable write equalization for tape drivesARCHIVE CORP·Filed 1992·Granted Nov 30, 1993·15 cites·10 claims
- 2662US4747004AMagnetic head positioning apparatusARCHIVE CORP·Filed 1986·Granted May 24, 1988·15 cites·7 claims
- 2761US5172280AApparatus and method for automatic write current calibration in a streaming tape driveARCHIVE CORP·Filed 1989·Granted Dec 15, 1992·15 cites·5 claims
- 2858US4837643ACircuit for controlling frequency and phase of voltage controlled oscillator in a data smoother for a streaming cartridge tape driveARCHIVE CORP·Filed 1986·Granted Jun 6, 1989·11 cites·38 claims
- 2956US5198947AApparatus for adjusting a tape head for a magnetic tapeARCHIVE CORP·Filed 1990·Granted Mar 30, 1993·9 cites·24 claims
- 3056US4978955AData randomizing/de-randomizing circuit for randomizing and de-randomizing dataARCHIVE CORP·Filed 1989·Granted Dec 18, 1990·21 cites·22 claims
- 3151US5327059ATape drive capstan motor servo system with static friction compensationARCHIVE CORP·Filed 1992·Granted Jul 5, 1994·11 cites·18 claims
- 3251US5218487AAudio tape operation on a DAT data storage driveARCHIVE CORP·Filed 1992·Granted Jun 8, 1993·9 cites·8 claims
- 3351US5122916AElectromagnetic head having interference compensation circuitryARCHIVE CORP·Filed 1991·Granted Jun 16, 1992·9 cites·4 claims
- 3449US5218501ADevice for aligning magnetic tape to a read-write headARCHIVE CORP·Filed 1991·Granted Jun 8, 1993·8 cites·8 claims
- 3548US4816932ACircuit for providing a symmetric current to the head of a magnetic recording deviceARCHIVE CORP·Filed 1986·Granted Mar 28, 1989·8 cites·28 claims
- 3648US4717866AStepping motor excitation sequencesARCHIVE CORP·Filed 1986·Granted Jan 5, 1988·7 cites·33 claims
- 3740US5375224ARaw data readerARCHIVE CORP·Filed 1993·Granted Dec 20, 1994·16 cites·15 claims
- 3836US4963810AVariable load motor drive controlARCHIVE CORP·Filed 1989·Granted Oct 16, 1990·10 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when ARCHIVE CORP files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →