Assignee
AMPEX
US·514 granted patents·12,474 citations·filing 1964–2000
Top patents by PatentIndex Score
514 records- 0198US4532547AVideo device synchronization systemAMPEX·Filed 1982·Granted Jul 30, 1985·215 cites·18 claims
- 0297US4731679AMethod and apparatus for transporting a recording medium with an adaptive velocity change profileAMPEX·Filed 1984·Granted Mar 15, 1988·112 cites·27 claims
- 0397US4692819AMethod and apparatus for controlling the position of a transported webAMPEX·Filed 1986·Granted Sep 8, 1987·132 cites·18 claims
- 0497US4560983ADynamically interactive responsive control device and systemAMPEX·Filed 1982·Granted Dec 24, 1985·158 cites·66 claims
- 0597US4099211APositionable transducing mounting structure and driving system thereforAMPEX·Filed 1976·Granted Jul 4, 1978·116 cites·39 claims
- 0697US4093885ATransducer assembly vibration sensorAMPEX·Filed 1976·Granted Jun 6, 1978·73 cites·5 claims
- 0796US4887172AApparatus and method for cueing a video tape recorderAMPEX·Filed 1987·Granted Dec 12, 1989·101 cites·26 claims
- 0896US4858040ABimorph actuator for a disk driveAMPEX·Filed 1987·Granted Aug 15, 1989·81 cites·4 claims
- 0995US4959774AShadow memory system for storing variable backup blocks in consecutive time periodsAMPEX·Filed 1989·Granted Sep 25, 1990·231 cites·23 claims
- 1095US4908874ASystem for spatially transforming imagesAMPEX·Filed 1986·Granted Mar 13, 1990·180 cites·12 claims
- 1195US4851755ALow power stepper motor drive system and methodAMPEX·Filed 1988·Granted Jul 25, 1989·98 cites·16 claims
- 1295US4399474AAutomatic threshold tracking systemAMPEX·Filed 1981·Granted Aug 16, 1983·58 cites·11 claims
- 1395US4211997AMethod and apparatus employing an improved format for recording and reproducing digital audioAMPEX·Filed 1978·Granted Jul 8, 1980·133 cites·23 claims
- 1494US6076142AUser configurable raid system with multiple data bus segments and removable electrical bridgesAMPEX·Filed 1997·Granted Jun 13, 2000·194 cites·12 claims
- 1594US5189355AInteractive rotary controller system with tactile feedbackAMPEX·Filed 1992·Granted Feb 23, 1993·284 cites·8 claims
- 1694US5189580AUltra small track width thin film magnetic transducerAMPEX·Filed 1991·Granted Feb 23, 1993·87 cites·11 claims
- 1794US5016342AMethod of manufacturing ultra small track width thin film transducersAMPEX·Filed 1989·Granted May 21, 1991·73 cites·12 claims
- 1894US5003539AApparatus and method for encoding and decoding attribute data into error checking symbols of main dataAMPEX·Filed 1989·Granted Mar 26, 1991·104 cites·21 claims
- 1994US4959718AVideo device synchronization systemAMPEX·Filed 1989·Granted Sep 25, 1990·91 cites·19 claims
- 2094US4575124AReproducible gray scale test chart for television camerasAMPEX·Filed 1984·Granted Mar 11, 1986·77 cites·16 claims
- 2194US4500933AUniversal interface unitAMPEX·Filed 1982·Granted Feb 19, 1985·134 cites·13 claims
- 2294US4463372ASpatial transformation system including key signal generatorAMPEX·Filed 1982·Granted Jul 31, 1984·100 cites·12 claims
- 2393US5146324AData compression using a feedforward quantization estimatorAMPEX·Filed 1990·Granted Sep 8, 1992·187 cites·16 claims
- 2493US4789826ASystem for sensing the angular position of a rotatable member using a hall effect transducerAMPEX·Filed 1987·Granted Dec 6, 1988·87 cites·10 claims
- 2593US4521870AAudio/video system having touch responsive function display screenAMPEX·Filed 1984·Granted Jun 4, 1985·82 cites·12 claims
- 2693US4472732ASystem for spatially transforming imagesAMPEX·Filed 1981·Granted Sep 18, 1984·127 cites·26 claims
- 2793US4356523ANarrow track magnetoresistive transducer assemblyAMPEX·Filed 1980·Granted Oct 26, 1982·91 cites·18 claims
- 2893US4285004ATotal raster error correction apparatus and method for the automatic set up of television cameras and the likeAMPEX·Filed 1980·Granted Aug 18, 1981·88 cites·39 claims
- 2993US4080636ASystem for damping vibrations in a deflectable transducerAMPEX·Filed 1976·Granted Mar 21, 1978·45 cites·11 claims
- 3092US5434623AMethod and apparatus for image data compression using combined luminance/chrominance codingAMPEX·Filed 1991·Granted Jul 18, 1995·154 cites·9 claims
- 3192US4821121AElectronic still store with high speed sorting and method of operationAMPEX·Filed 1987·Granted Apr 11, 1989·112 cites·15 claims
- 3292US4597083AError detection and correction in digital communication systemsAMPEX·Filed 1984·Granted Jun 24, 1986·68 cites·20 claims
- 3392US4555784AParity and syndrome generation for error detection and correction in digital communication systemsAMPEX·Filed 1984·Granted Nov 26, 1985·47 cites·3 claims
- 3492US4151570AAutomatic scan tracking using a magnetic head supported by a piezoelectric bender elementAMPEX·Filed 1976·Granted Apr 24, 1979·42 cites·27 claims
- 3591US6457928B1Inter-row transfer unit for moving tape cartridges between rows of library systemsAMPEX·Filed 1999·Granted Oct 1, 2002·76 cites·39 claims
- 3691US5041922AMagnetic recording medium having magnetic storage and saturable layers, and apparatus and method using the mediumAMPEX·Filed 1990·Granted Aug 20, 1991·64 cites·34 claims
- 3791US4475981AMetal polishing composition and processAMPEX·Filed 1983·Granted Oct 9, 1984·70 cites·23 claims
- 3891US4000510ASystem for storage and retrieval of video information on a cyclical storage deviceAMPEX·Filed 1975·Granted Dec 28, 1976·96 cites·20 claims
- 3990US5220318AApparatus for selectively varying keyboard switching forceAMPEX·Filed 1990·Granted Jun 15, 1993·75 cites·5 claims
- 4090US4564915AYIQ Computer graphics systemAMPEX·Filed 1982·Granted Jan 14, 1986·91 cites·37 claims
- 4190US4375631AJoystick controlAMPEX·Filed 1981·Granted Mar 1, 1983·85 cites·7 claims
- 4290US4163993AContinuous slow motion automatic tracking systemAMPEX·Filed 1978·Granted Aug 7, 1979·37 cites·26 claims
- 4390US4151569APositionable transducer mounting structure using a piezoelectric bender elementAMPEX·Filed 1976·Granted Apr 24, 1979·39 cites·29 claims
- 4489US4481449APower fail servo systemAMPEX·Filed 1982·Granted Nov 6, 1984·36 cites·24 claims
- 4589US4468708ACombined data rate reduction systemAMPEX·Filed 1981·Granted Aug 28, 1984·54 cites·16 claims
- 4689US4027335ADC free encoding for data transmission systemAMPEX·Filed 1976·Granted May 31, 1977·72 cites·14 claims
- 4789US3982233ACore memory with improved sense-inhibit recovery timeAMPEX·Filed 1974·Granted Sep 21, 1976·37 cites·24 claims
- 4888US6724826B1Method and apparatus for improving the image quality of transmitted video signals via pre-filteringAMPEX·Filed 2000·Granted Apr 20, 2004·40 cites·30 claims
- 4988US6438623B1Transfer unit extending between two or more cabinets for expansion of tape library systemsAMPEX·Filed 1999·Granted Aug 20, 2002·61 cites·39 claims
- 5088US4767970ADynamic brake control for a tape drive systemAMPEX·Filed 1986·Granted Aug 30, 1988·38 cites·18 claims
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