Inventor · disambiguated record
Avraham Perahia
Also filed as: PERAHIA AVRAHAM
10 granted patents·2 pending applications·78 citations·filing 1975–2005
88Inventor score
Top patents by PatentIndex Score
12 records- 0174US4195318AHigh density bias linearized magnetic recording system utilizing Nyquist bandwidth partial response transmissionSPERRY CORP·Filed 1978·Granted Mar 25, 1980·17 cites·44 claims
- 0271US5418657ATrack address detecting means by HDD sector servo methodALPS ELECTRIC CO LTD·Filed 1988·Granted May 23, 1995·18 cites·8 claims
- 0358US4063293AMagnetic head switching matrix with bi-directional current capabilitySPERRY RAND CORP·Filed 1976·Granted Dec 13, 1977·9 cites·17 claims
- 0453US3940636AAcoustic delay surface wave motion transducer systems with enhanced stabilitySPERRY RAND CORP·Filed 1975·Granted Feb 24, 1976·13 cites·10 claims
- 0551US6903893B2Energy storage for use in emergency head retraction in disk drivesRIOSPRING INC·Filed 2003·Granted Jun 7, 2005·2 cites·10 claims
- 0650US6894453B2Method and apparatus to measure disk drive head load/unload velocityRIOSPRING INC·Filed 2003·Granted May 17, 2005·2 cites·8 claims
- 0746US4563653AServo preamplifier and demodulator chain using transconductance balanced modulatorsPERTEC COMPUTER CORP·Filed 1982·Granted Jan 7, 1986·7 cites·2 claims
- 0840US4301416AServo preamplifier and demodulator chain using transconductance balanced modulatorsPERTEC COMPUTER CORP·Filed 1979·Granted Nov 17, 1981·4 cites·9 claims
- 0939US2004083396A1Method and apparatus for power management in disk drivesRIOSPRING INC·Filed 2003·Application pending·0 cites
- 1038US2005240783A1Monitoring a voltage level of a power supply for a disk driveRIOSPRING INC·Filed 2005·Application pending·0 cites
- 1134US4425534ALinear motor velocity sensorPERTEC COMPUTER CORP·Filed 1981·Granted Jan 10, 1984·5 cites·4 claims
- 1229US4384309AClosed loop servo demodulator for positioning a servo headPERTEC COMPUTER CORP·Filed 1981·Granted May 17, 1983·1 cites·2 claims
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