| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
|---|
| 04/18/1990 | EP0364085A2 Tracking servo apparatus |
| 04/18/1990 | EP0363550A1 Distance-controlled tunneling transducer and direct access storage unit employing the transducer |
| 04/18/1990 | EP0363419A1 Latch mechanism for disk drives. |
| 04/18/1990 | CN1041470A Magnetic head air bearing slider |
| 04/17/1990 | US4918676 Track accessing apparatus for optical disk |
| 04/11/1990 | EP0362987A2 Servo device for disc player |
| 04/11/1990 | EP0362938A1 Device for scanning a record carrier and control circuit for use in such a device |
| 04/11/1990 | EP0362285A1 Disk drive architecture. |
| 04/10/1990 | US4916684 Head drive arrangement for a data reproducing apparatus |
| 04/10/1990 | US4916559 Method for fading out recorded data at end of predetermined period |
| 04/10/1990 | US4916342 Rotary actuator |
| 04/10/1990 | CA1267723A1 Prewritten data storage medium and optical scanning device therefor |
| 04/05/1990 | WO1990003644A1 Fault tolerant index patterns and decoding means |
| 04/05/1990 | DE3932678A1 Fast search device for video cassette tape recorder - reduces length of tape in frictional contact to minimise risk of damage during high-speed movement |
| 04/04/1990 | EP0362072A2 A mechanism for suspending a head slider of a recording apparatus |
| 04/04/1990 | EP0361786A2 Disk file digita servo control |
| 04/04/1990 | EP0361658A1 Magnetic recording apparatus with magnetic head air bearing slider |
| 04/04/1990 | EP0361488A2 Magnetic disk apparatus having a circuit for detecting the position of servo information recorded on a magnetic disk |
| 04/04/1990 | EP0361381A2 Actuator velocity control system for moving a magnetic head in a magnetic disk unit and a magnetic disk unit with said system |
| 04/04/1990 | EP0361222A2 An automatic servo gain calibration system for a disk drive |
| 04/03/1990 | US4914725 Transducer positioning servo mechanisms employing digital and analog circuits |
| 04/03/1990 | US4914644 Disk file digital servo control system with coil current modeling |
| 03/28/1990 | EP0362285A4 Disk drive architecture. |
| 03/28/1990 | EP0360499A2 Analog-to-digital converter |
| 03/28/1990 | EP0360207A2 Servo data for a magnetic data recording medium |
| 03/28/1990 | EP0360123A2 Super-large capacity data storage drive |
| 03/27/1990 | US4912583 Clamp for mounting head-load beam slider arm in a disk drive |
| 03/27/1990 | US4912577 Tracking apparatus for VCR |
| 03/27/1990 | US4912576 Method for writing a servo pattern |
| 03/27/1990 | US4912572 Magnetic disk drive with effective AGC control of servo signals by selectively varying A/D converter reference level |
| 03/22/1990 | WO1990003031A1 Recording/reproducing apparatus |
| 03/22/1990 | WO1990003030A1 Magnetic head and disc tester |
| 03/22/1990 | WO1990003029A1 Rotating positioning device for magnetic disk memories |
| 03/22/1990 | DE3831064A1 Circuit for controlling the tracking in a recorder |
| 03/21/1990 | EP0359368A1 Tracking servo system |
| 03/21/1990 | EP0359364A2 A rigid transparent disk for testing sliders and a method of forming the same |
| 03/20/1990 | US4910722 Optical information recording and reproducing apparatus |
| 03/20/1990 | US4910617 Disk drive head positioning servo system utilizing encoded track zone information |
| 03/20/1990 | US4910616 Servo track centering for magnetic disc read/write head |
| 03/20/1990 | US4910615 Capacitance sensor for detecting the position of magnetic rotating heads |
| 03/07/1990 | EP0357430A2 Multispeed reproducing control apparatus of a video disk player |
| 03/07/1990 | EP0357044A1 Device for controlling an access operation of an information recording and reproducing device |
| 03/07/1990 | EP0356959A2 Tracking error detecting circuit |
| 03/07/1990 | EP0356939A1 Device for controlling an access operation of an information recording and reproducing device |
| 03/06/1990 | US4907109 Magnetic disc drive system having automatic offset and gain adjustment means |
| 03/06/1990 | US4907108 Delayed-action motor control circuit for reducing load current |
| 03/06/1990 | US4907107 Method for positioning a magnetic head in accordance with digital peak values corresponding to servo data and magnetic disk positioning apparatus for the same |
| 03/06/1990 | US4907106 Head slider driving mechanism for a magnetic disk apparatus |
| 03/06/1990 | US4907099 Method and apparatus for reproducing an information signal recorded on a rotary recording medium at a high speed |
| 03/06/1990 | US4906923 Speed detecting apparatus including a multi-coil device |
| 02/27/1990 | US4905109 Process for optimizing head position to overcome disk misclamping and imperfections |
| 02/22/1990 | WO1990001767A1 Magnetic head locking mechanism |
| 02/21/1990 | CN1039919A The method and circuit compensating failure adjust voltage in the circuit of focus and/or tracing |
| 02/20/1990 | US4903157 Electromagnet-actuated head latching apparatus |
| 02/20/1990 | US4903151 Head positioning system for positioning a multiple head with respect to data and servo trasks of a recording medium |
| 02/20/1990 | US4902971 Magnetic head and disc tester employing pivot arm on linearly movable slide |
| 02/20/1990 | US4901430 Method of mounting a magnetic head |
| 02/13/1990 | US4901299 Optical disk reading head controller |
| 02/13/1990 | US4901176 Magnetic head support assembly for floppy device |
| 02/08/1990 | WO1990001205A1 Method and apparatus for mounting a magnetic head on a suspension arm |
| 02/07/1990 | EP0353897A2 Control system for a disk drive head |
| 02/07/1990 | EP0353767A2 Detecting sector servo information in a disk system |
| 02/07/1990 | EP0353566A2 Read/write head carrying mechanism for floppy disk drive |
| 02/06/1990 | US4899328 Data reproducing apparatus and method for locking a reproducing head |
| 02/06/1990 | US4899325 Fine access method and circuit for an optical disk drive using a multi-track jump |
| 02/06/1990 | US4899234 Adaptive velocity profile for disk actuator control |
| 02/06/1990 | CA1265615A1 Digitally responsive system for positioning a transducer of a storage apparatus |
| 01/31/1990 | EP0353077A1 Information storage disc transducer position control system using last step damping |
| 01/30/1990 | US4897743 Method and apparatus for releasing a magnetic head |
| 01/30/1990 | US4897001 De-staking tool and method for removal of head gimbals from head stack assemblies |
| 01/30/1990 | CA1265242A1 Magnetic disk apparatus |
| 01/30/1990 | CA1265241A1 Disk drive positioning system providing passive head crash protection |
| 01/25/1990 | WO1990000797A1 Process and circuit arrangement for compensating offset voltages in a focus and/or track-regulating circuit |
| 01/24/1990 | EP0351888A2 Disk unit |
| 01/24/1990 | EP0351837A2 Read/write head slider with medium access aperture |
| 01/23/1990 | US4896240 Magnetic disk having an index area and a limited number of radially extending servo sections |
| 01/23/1990 | US4896233 Head supporting mechanism for a magnetic disk apparatus in which a head slider is inclined with respect to a gimbal spring |
| 01/23/1990 | US4896228 Magnetic disc apparatus having improved head position control |
| 01/23/1990 | CA1264851A1 Method and apparatus for recording a digital signal |
| 01/17/1990 | EP0350939A1 Method and switching arrangement for the compensation of offset voltages in a focus and/or track-following circuit |
| 01/16/1990 | US4894740 Magnetic head air bearing slider |
| 01/16/1990 | US4894599 deadbeat control of disk drive actuator |
| 01/11/1990 | WO1990000300A1 Seeking multitasking disk controller |
| 01/09/1990 | US4893294 Disk player and disk playing method in which tracking miss tolerance is adjusted |
| 01/09/1990 | US4893206 Pivoting radial access mechanism with spinning support shaft |
| 01/09/1990 | US4893205 Flexure mount for disc drives |
| 01/09/1990 | US4893204 Air bearing head slider having first and second leading edge tapered portions |
| 01/09/1990 | US4893201 Track access control system for magnetic disk apparatus |
| 01/09/1990 | US4892423 Rotary actuator and fabrication process therefor |
| 01/03/1990 | EP0348949A2 Disc control apparatus |
| 01/02/1990 | US4891724 Disk drive read/write head rack flexible rail mount apparatus |
| 12/28/1989 | WO1989011148A3 Tape drive machines |
| 12/27/1989 | EP0348197A2 Linear motor locking mechanism in a disc unit |
| 12/27/1989 | EP0348165A2 Disc recording and/or reproducing apparatus |
| 12/26/1989 | US4890277 Carriage driving apparatus for a disk player |
| 12/26/1989 | US4890176 Crash stop and magnetic latch for a voice coil actuator |
| 12/26/1989 | US4890172 Automatic servo gain calibration system for a disk drive |
| 12/20/1989 | EP0347102A2 Magnetic disk file recording with variable track width and variable track density |
| 12/20/1989 | EP0346439A1 Low drag stabilizer device for stabilizing the interface between a transducer and a moving medium. |
| 12/13/1989 | EP0345696A2 Data reproducing system |