Class / Patent application number | Description | Number of patent applications / Date published |
369126000 | Electrical modification or sensing of storage medium (e.g., capacitive, resistive, electrostatic charge) | 83 |
20080205252 | FERROELECTRIC INFORMATION STORAGE MEDIUM AND METHOD OF MANUFACTURING THE SAME - A ferroelectric information storage medium having ferroelectric nanodots and a method of manufacturing the ferroelectric information storage medium are provided. The ferroelectric information storage medium includes a substrate, an electrode formed on the substrate, and ferroelectric nanodots formed on the electrode, wherein the ferroelectric nanodots are separated from each other, and a plurality of the ferroelectric nanodots form a single bit region. | 08-28-2008 |
20080212456 | DATA STORAGE DEVICE AND METHOD OF PRODUCTION THEREFOR - The present invention relates to a data storage device comprising: a data storage medium for storing data in the form of topographic features; and at least one probe for writing and/or reading the data stored in the data storage medium, wherein the data storage medium is formed on a support layer, the support layer having a lower shear modulus than the data storage medium. | 09-04-2008 |
20080219133 | Probe storage with doped diamond-like carbon medium and current limiter - According to embodiments of the present invention, a probe storage medium includes a conductive layer as an electrode and a metal, metalloid, and/or non-metal doped diamond-like carbon (DLC) layer disposed on the conductive layer. A probe array may be positioned close proximity with the layer of doped DLC. An individual probe in the probe array may have an atomic force microscope tip. The probe storage medium may be written to by applying a current, voltage, and/or power to the tip between a thresholds current, voltage, and/or power value and a limiting current, voltage, and/or power value. The current, voltage, and/or power cause the layer of DLC to change conductance. The probe storage medium may be read by applying a current, voltage, and/or power to the tip below a threshold current, voltage, and/or power value and sensing the conductance. | 09-11-2008 |
20080219134 | Method for Positioning a Scanning Probe on a Target Track of a Multi-Track Storage Medium, Storage Device, Scanning Device, and Storage Medium - A method for settling on a target track of a servo system in a storage device ( | 09-11-2008 |
20080225676 | Data storage device and control - The present invention provides data storage devices, systems and methods. An example device includes: a storage medium for storing data in the form of marks; and at least one probe. The probe(s) and storage medium are operable to move relative to each other, with each probe comprising a tip facing the storage medium and having a force creating unit associated thereto. The force creating units are operable to create a force acting between the tip and said storage medium. The data storage device is operable to erase an indentation mark in the storage medium by way of controlling the force creating unit for creating at least one erase force pulse with a force rise time being less than or equal to the order of 1 microsecond. | 09-18-2008 |
20080225677 | Storage device having flexible architecture and free scalability - A storage device according to the invention has flexible architecture and free scalability. It includes an address input and a data input. It also includes an address and data evaluation unit, which is formed in such a way that it controls a controllable switching means, wherein in operation the address and data evaluation unit depends on the signals of said address and data inputs. Finally, a read/write line for a read/write signal is provided, which can be applied to a local probe data storage unit via the controllable switching means. | 09-18-2008 |
20080225678 | FERROELECTRIC RECORDING MEDIUM AND WRITING METHOD FOR THE SAME - A ferroelectric recording medium and a writing method for the same are provided. The ferroelectric recording medium includes a ferroelectric layer which reverses its polarization when receiving a predetermined coercive voltage. A nonvolatile anisotrophic conduction layer is formed on the ferroelectric layer. A resistance of the anisotrophic conduction layer decreases when receiving a first voltage lower than the coercive voltage, and the resistance of the anisotrophic conduction layer increases when receiving a second voltage higher than the coercive voltage. Multi-bit information is stored by a combination of polarization states of the ferroelectric layer and the resistance of the anisotrophic conduction layer. Accordingly, multiple bits can be expressed on one domain of the ferroelectric recording medium. | 09-18-2008 |
20080225679 | Data Read/Write Systems Comprising A Tip - A method for writing data to and/or reading data from locations on a surface via a tip comprises moving the tip between the locations on the surface. At each location, energy is selectively applied to the surface via the tip and the tip and the surface are selectively forced together in synchronization with the application of energy. | 09-18-2008 |
20080232228 | SYSTEMS AND METHODS OF WRITING AND READING A FERRO-ELECTRIC MEDIA WITH A PROBE TIP - A system for storing information comprises a media including a ferroelectric layer, a tip arrangeable in electrically communicative proximity to the media, and circuitry to detect a polarization signal having a radio frequency. The polarization signal corresponds to changes in polarization of domains of the ferroelectric layer at a relative velocity of movement between the tip and the media, wherein a domain of polarization of the ferroelectric layer is information. | 09-25-2008 |
20080239930 | SPIN FET, MAGNETORESISTIVE ELEMENT AND SPIN MEMORY - A spin FET includes a first ferromagnetic film disposed on a first source/drain area, a direction of magnetization thereof being fixed in an upward direction or a downward direction perpendicular to a film surface, a second ferromagnetic film disposed on a second source/drain area, a direction of magnetization thereof being changed in the upward direction or the downward direction, an anti-ferromagnetic ferroelectric film disposed on the second ferromagnetic film, and a tunnel barrier film disposed at least between the first source/drain area and the first ferromagnetic film or between the second source/drain and the second ferromagnetic film. Resistance of the anti-ferromagnetic ferroelectric film is larger than ON resistance when the first and second source/drain areas conduct electricity through the channel area. | 10-02-2008 |
20080239931 | RECORDING AND REPRODUCING APPARATUS PROVIDED WITH PROBE MEMORY - A recording and reproducing apparatus supports a recording medium swingably in at least two axis directions by a support section formed in a shape having elasticity. When an access can be made to a memory, the recording medium is constantly and reciprocatingly moved in a direction along data row. Thus, a positional relationship with a probe head is always grasped. When an access is made, a moving time associated with position identification is reduced, and precise and fast movement is achieved. | 10-02-2008 |
20080239932 | INFORMATION RECORDING AND REPRODUCING APPARATUS - A nonvolatile information recording and reproducing device exhibits low power consumption and high thermal stability. The information recording and reproducing apparatus according to an aspect of the present invention includes a recording layer and a unit for recording information by applying a voltage to the recording layer to generate a resistance change to be caused due to a phase change in the recording layer. The recording layer includes a material having a ramsdelite structure. | 10-02-2008 |
20080247300 | STORAGE DEVICE AND METHOD FOR SCANNING A STORAGE MEDIUM - A storage device and a method for scanning a storage medium. A storage medium for storing data in the form of marks is scanned by an array of probes for mark detecting purposes in a scanning mode. The storage medium has fields with each field to be scanned by an associated one of the probes. At least one of the fields has marks representing operational data for operating the scanning mode. Scanning parameters are computed from the operational data and the scanning mode is adjusted according to the computed parameters. | 10-09-2008 |
20080253269 | POSITIONING SYSTEM MOUNTED ON PROBE MEMORY DEVICE AND POSITIONING METHOD THEREOF - A probe memory device carries out positioning with the use of a servo pattern provided in a servo area on a recording medium, and the recording medium and a probe head section are reciprocatingly moved (scan-moved) by vibration at a specific frequency in a one-axis direction. At this time, based on information from the servo area, relative position information between the recording medium and the probe head section is acquired, the relative position information is processed at a control section, and then, feedback control is carried out for carrying out position correction relative to an actuator. | 10-16-2008 |
20080259779 | Probe Head With Narrow Read Element - An apparatus includes a storage medium, and a transducer positioned adjacent to the storage medium, wherein the transducer includes a first electrode and a second electrode, with the width of the first electrode being less than the width of the second electrode. A method including: applying a first voltage to a transducer to write data to a storage medium, and applying a second voltage to the transducer to read data from the storage medium, wherein the magnitude of the first voltage is greater than the magnitude of the second voltage. | 10-23-2008 |
20080298218 | ELECTRONIC DEVICE AND MANUFACTURING METHOD OF ELECTRONIC DEVICE - In the state in which a FPC terminal conductor precoated with a solder bump is opposed to a suspension terminal conductor having an Au plating layer, heating and melting is carried out while the suspension terminal conductor is pressed against the solder bump by a heater chip, thereby joining the FPC terminal conductor with the suspension terminal conductor by solder without using flux. In the suspension terminal conductor, a notch, a slit, or the like is formed as a solder joint observation window through which the solder joint state by the solder bump can be visually checked from outside via an insulating layer. | 12-04-2008 |
20080316904 | METHOD AND APPARATUS FOR REDUCING TIP-WEAR OF A PROBE - The present invention relates to a method of reducing the wear of a tip of a probe when the tip is in contact with a surface of a substrate and when the probe is mounted on a support structure. A method is provided where a load force is applied to the probe, thereby causing the tip to be maintained substantially in contact with the substrate surface and a modulation step where the e magnitude of the load force is modulated at a modulation frequency. The modulation frequency is selected to be greater than a fundamental vibration frequency of the support structure on which the probe is mounted. | 12-25-2008 |
20080316905 | Data Storage Device - A storage device including a storage medium for storing data in the form of topographic or magnetic marks. At least one probe is mounted on a common frame, the common frame and the storage medium designed for moving relative to each other for creating or detecting said marks. Each probe includes a tip facing the storage medium, a read sensing element, a write element and a capacitive platform, that forms a first electrode and is designed for a voltage potential applied to it independent from a control signal for said read sensing element and for said voltage potential applied to said capacitive platform being independent from a control signal for said write heating element. It further comprises a second electrode arranged in a fixed position relative to the storage medium forming a first capacitor together wherein said first electrode and a medium between the first and second electrode. | 12-25-2008 |
20080316906 | READ/WRITE TRANSDUCER FOR A FERROELECTRIC STORAGE MEDIUM, AND CORRESPONDING STORAGE DEVICE AND METHOD - A transducer for a storage medium has a supporting element positioned over the storage medium with a first head configured to interact with the storage medium and a second head operatively connected to the first head to interact with the storage medium. The second head is carried by the supporting element in a position adjacent to the first head, and the first head and the second head are aligned in a scanning direction. The first head performs the reading of a data item stored in a portion of the storage medium, the reading entailing the deletion of the data item, and the second head performs the rewriting of the data item in the same portion of the storage medium. | 12-25-2008 |
20090003186 | Probe, Recording Apparatus, Reproducing Apparatus, And Recording/Reproducing Apparatus | 01-01-2009 |
20090003187 | Storage Device and Method for Operating a Storage Device - A method of operating a storage device includes storing data in the form of marks in a storage medium; scanning the storage medium with at least one probe operating in a scanning mode; and utilizing a control unit to provide a pulsed reading signal for data detecting in the scanning mode, and providing the probe with oversampling reading pulses in a clock mark scanning mode, wherein the control unit further comprises an input for a response signal to the oversampling reading pulses, and a determination unit for determining the clock dependent on the response signal; wherein the storage medium comprises marks for determining a clock of the pulsed reading signal. | 01-01-2009 |
20090010144 | Transducer Assembly and Data Storage Apparatus Including the Transducer Assembly - An apparatus includes a storage medium, a transducer including an electrode positioned along an axis and having a curved end positioned adjacent to the storage medium, a wear-resistant coating surrounding the electrode, and an actuator for providing relative movement between the storage medium and the transducer. | 01-08-2009 |
20090016202 | METHOD OF PRODUCING A PHOTOELECTRIC TRANSDUCER AND OPTICAL PICK UP - A photoelectric transducer comprises a board, which carries at least an optical sensor on one face, and a spacer defining a recess that houses the optical sensor. The recess is at least partly filled with an optical glue. To mount the transducer in an optical pick up for an optical disk, the spacer is fastened to an optical body of the pick up. | 01-15-2009 |
20090022042 | E-WRITER HEAD - An integrated electromechanical disc drive system for creating nanoscale patterns comprises a spinning disc coated with a liquid or solid film and at least one flying integrated write head, said write head being attached to a pivoted swing arm and comprising a heating tip locally exerting heat when a current is driven through it; and at least one electrically conductive electrode tip which functions as an electrostatic atomic force tip capable of exerting an electric field between the tip and the disc. | 01-22-2009 |
20090034405 | METHOD OF IMPROVING SENSITIVITY OF ELECTRIC FIELD SENSOR, STORAGE APPARATUS INCLUDING ELECTRIC FIELD SENSOR, AND METHOD OF REPRODUCING INFORMATION OF THE STORAGE APPARATUS - A storage apparatus includes a ferroelectric recording medium, an electric field sensor including a source region, a drain region and a resistance region electrically connecting the source region to the drain region and having a resistance, which varies according to an intensity of an electric field due to a polarization voltage of an electric domain of the recording medium, a voltage applying unit applying a drain voltage between the source region and the drain region, and a reproducing signal detection unit including at least one negative resistor installed in an electric circuit connecting the drain region to the voltage applying unit, and detecting a change in a voltage between the drain region and the at least one negative resistor. | 02-05-2009 |
20090040911 | Cantilever on cantilever structure - In one embodiment, the present invention includes an apparatus having a first cantilever structure to move in a vertical direction, including a first plate formed of a conductive material, an insulation beam adapted on a portion of the first plate, and a second cantilever structure adapted on the insulation beam and including a second plate formed of a conductive material, where an air gap is present between the first and second plates. Other embodiments are described and claimed. | 02-12-2009 |
20090059773 | ELECTRON BEAM RECORDING APPARATUS - An electron beam recording apparatus is disclosed that records information onto the surface of a sample by using an electron beam. The electron beam recording apparatus includes an electron source that irradiates the electron beam, a magnetic detector that is configured to move onto and out of an irradiation axis and acquires magnetic information on the irradiation axis, a convergence position control part that calculates a convergence position correction amount for correcting a convergence position of the electron beam with respect to the surface of the sample based on the magnetic information, and a convergence position adjusting part that adjusts the convergence position of the electron beam with respect to the surface of the sample. The convergence position control part causes the convergence position adjusting part to adjust the convergence position of the electron beam with respect to the surface of the sample based on the convergence position correction amount. | 03-05-2009 |
20090059774 | Method of storing a data bit in a phase change alloy material with an electron beam - Alloy memory structures and methods are disclosed wherein a layer or volume of alloy material changes conductivity subsequent to introduction of a electron beam current-induced change in phase of the alloy, the conductivity change being detected using current detection means such as photon-emitting P-N junctions, and being associated with a change in data bit memory state. | 03-05-2009 |
20090086613 | Non-Destructive Readback For Ferroelectric Material - An apparatus that provides for non-destructive readback of a ferroelectric material. The apparatus can include a ferroelectric layer with a scannable surface wherein the ferroelectric layer has a compensation charge adjacent the scannable surface. The apparatus also can include an electrode adjacent the scannable surface to sense the compensation charge. A related method is also disclosed. | 04-02-2009 |
20090092032 | Multiple Ferroelectric Films - An apparatus includes a first ferroelectric storage layer and a second ferroelectric storage layer adjacent the first ferroelectric storage layer. A coupling layer may be between the first ferroelectric storage layer and the second ferroelectric storage layer. The ferroelectric storage layers may be configured as a data storage medium for use in a data storage system. A related method is also disclosed. | 04-09-2009 |
20090092033 | ELECTRIC FIELD SENSOR HAVING VERTICAL STRUCTURE, FABRICATION METHOD THEREOF, AND STORAGE UNIT USING THE SAME - An electric field sensor includes a substrate having a low resistive semiconductor layer doped with a high-density dopant as the top layer of the substrate, a high resistive semiconductor layer doped with a low-density dopant, the high resistive semiconductor layer located at a partial area on the low resistive semiconductor layer, and a conductive layer located on the high resistive semiconductor layer, wherein a change of an electric field is detected by a change of a current flowing through the low resistive semiconductor layer, the high resistive semiconductor layer, and the conductive layer. | 04-09-2009 |
20090097385 | INFORMATION RECORDING/REPRODUCING APPARATUS - A probe group is composed of, for instance, four probes adjacently arranged, and one modulation circuit is arranged for each probe group. At the time of recoding information, a changeover switch connects one of the four probes with the modulation circuit, and subsequently changes the probes to be connected with the modulation circuit while reciprocal movement of a recording medium is being controlled. | 04-16-2009 |
20090116366 | Preload Modulation to Reduce Head Motion Hysteresis - An apparatus includes a data storage media and a plurality of heads, the data storage media and heads being structured and arranged for relative movement between the heads and storage media causing the heads to move along a scan path, and an actuator for changing a magnitude of head to media force as the heads move along the scan path. A method for reducing head motion hysteresis is also provided. | 05-07-2009 |
20090116367 | FERROELECTRIC RECORD CARRIER, ITS METHOD OF MANUFACTURE AND MICRO-TIP RECORDING SYSTEM INCORPORATING SAME - The present invention relates to a data record carrier of the type with ferroelectric memory layer, its method of manufacture and a micro-tip recording system incorporating same. The invention applies in particular to computer-based or multimedia applications requiring high memory capacities. A record carrier according to the invention comprises a substrate, a counter-electrode deposited on the substrate and intended to cooperate with an electrode of a data reading and/or writing device, and at least one ferroelectric memory layer which is able to store these data and which exhibits a first face in close contact with said counter-electrode. According to the invention, the counter-electrode is made of a substance comprising a carbonaceous material chosen from the group consisting of carbon in the form of graphite or amorphous diamond, the carbides of a metallic or non-metallic element with the exclusion of ionic carbides, and their mixtures. | 05-07-2009 |
20090129246 | ENVIRONMENTAL MANAGEMENT OF A PROBE STORAGE DEVICE - A system for storing information comprises a package including a lid, a bowl mateable with the lid, and leads extending from an interior of the package to an exterior of the package. A magnet structure includes a first flux plate and a magnet and is fixedly connected with the lid by way of the first flux plate. A media stack includes a cap including cut-outs for receiving at least a portion of the magnet structure, a media frame connected to the cap, a tip die connected to the media frame, and a second flux plate connected with the tip die. A movable media platform is movably connected with the frame and arranged between the cap and the tip die. An electric trace is formed on the media platform so that the electric trace is arranged between the media platform and the cap. A media is fixedly associated with the movable media platform and accessible to the tip die. The media stack is seated within the bowl and wire-bonded to the leads. | 05-21-2009 |
20090129247 | METHOD AND SYSTEM FOR IMPROVING DOMAIN FORMATION IN A FERROELECTRIC MEDIA AND FOR IMPROVING TIP LIFETIME - An information storage device comprises a ferroelectric media, write circuitry to provide a first signal and a second signal to the ferroelectric media, a tip platform and a cantilever operably associated with the tip platform. A tip extends from the cantilever toward the ferroelectric media and includes a first conductive material communicating the first signal from the write circuitry to the ferroelectric media and a second conductive material communicating the second signal from the write circuitry to the ferroelectric media. A insulating material arranged between the first conductive material and the second conductive material to electrically isolate the first conductive material from the second conductive material. | 05-21-2009 |
20090154327 | PROBE STORAGE DEVICE - A probe storage device includes a scanner chip having at least a suspension layer and a table layer an array chip, and at least one coil mounted to the scanner chip. The probe storage device further includes a top plate mounted proximate to the table layer. The top plate includes at least one magnet positioned adjacent the at least one coil. A base plate is mounted proximate to the suspension layer and includes at least one magnet positioned adjacent to the at least one coil. An electronic component mounting cavity is formed in one of the table layer, suspension layer, at least one top plate and base plate. An electronic component is mounted within the electronic component mounting cavity. The electronic component is wired directly to the scanner chip to provide a direct wired connection to that eliminates the need for a printed circuit board. | 06-18-2009 |
20090161523 | USING CONTROLLED BIAS VOLTAGE FOR DATA RETENTION ENHANCEMENT IN A FERROELECTRIC MEDIA - Using controlled bias voltage for data retention enhancement in a ferroelectric media is generally described. In one example, an apparatus includes a ferroelectric film including one or more domains, the ferroelectric film having a first surface and a second surface, the first surface being opposite the second surface, an electrode coupled with the first surface, and an electrically conductive thin film coupled with the second surface wherein the electrically conductive thin film is sufficiently conductive that a controlled bias field applied between the electrically conductive thin film and the electrode is sufficient to grow, shrink, or actively maintain the size of the one or more domains disposed between the electrically conductive thin film and the electrode. | 06-25-2009 |
20090161524 | READING/WRITING HEAD USING ELECTRIC FIELD, DATA READING/WRITING APPARATUS INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE SAME - A data reading/writing head reading/writing data from/to a ferroelectric recording medium by using an electric field effect, includes a semiconductor body having a first plane on which an air bearing pattern is formed and a second plane crossing the first plane. A sensing unit is located on the second plane and reads data written to the ferroelectric recording medium, wherein the second plane is separated from the first plane, and a floating gate is disposed on the sensing unit, wherein an end of the floating gate extends to the first plane to guide an electric field from the ferroelectric recording medium to the sensing unit. | 06-25-2009 |
20090168635 | Memory Media Including Domains HavingTrapped Charges at a Top Region Thereof - A memory media and a method to provide same. The memory media includes: a media layer comprising a ferroelectric layer having a bottom surface and a top surface; a plurality of adjacent charge domains defined in the ferroelectric layer, the domains including alternating up domains and down domains each extending between the bottom surface and the top surface; and a trapped charge region adjacent a top surface of the media layer, the trapped charge region including charges in addition to the charges present in the charge domains at regions thereof other than regions adjacent the top surface of the media layer. | 07-02-2009 |
20090168636 | CANTILEVER DESIGN WITH ELECTROSTATIC-FORCE-MODULATED PIEZORESPONSE FORCE MICROSCOPY (PFM) SENSING - In one embodiment, the present invention includes an apparatus having a cantilever structure to move in a vertical direction, including a grounded cantilever body and a conductive tip, a vertical actuation electrode to actuate the cantilever to cause the conductive tip to contact a ferroelectric media surface, an AC electrostatic drive electrode to produce electrostatic forces to cause the cantilever structure to vibrate, and a sensing trace coupled with the conductive tip to sense charge generated by the ferroelectric media surface in response to a force applied by the conductive tip. Other embodiments are described and claimed. | 07-02-2009 |
20090175153 | Electrical-Effect Data Recording Medium that Includes a Localized Electrical Conduction Layer - An electrical-effect data recording medium is preferably formed by a successive stacking of a protective layer, a localized electrical conduction layer, a recording layer, a thin layer forming an electrode and a substrate. The localized electrical conduction layer is formed by a low electrical conductivity material, in which inclusions having a higher electrical conductivity than that of the material are dispersed. The inclusions can be oblong or spherical in shape and the material presents a non-linear electrical conduction. | 07-09-2009 |
20090185474 | METHOD OF STORING DATA USING A MICRO-ELECTROMECHANICAL SYSTEM BASED DATA STORAGE SYSTEM - A method of storing data using data storage system having a positioning system for a micro-electromechanical system (“MEMS”) based data storage is provided. The method includes a moving MEMS-based scanner that interacts with a polymer medium to read, write and erase data. A first positioning system is coupled to the MEMS scanner to allow the storage of data over a defined area. A second positioning system is coupled to the first positioning system and the MEMS scanner to allow the use of a larger polymer medium. A plurality of storage modules is also provided to allow scalability of data storage. | 07-23-2009 |
20090207717 | Three-terminal multiple-time programmable memory bitcell and array architecture - In one embodiment, a non-volatile memory bitcell includes a program electrode, an erase electrode, a cantilever electrode connected to a bi-stable cantilever positioned between the program electrode and the erase electrode, and switching means connected to the program electrode arranged to apply a voltage potential onto the program electrode, or to detect or to prevent the flow of current from the cantilever to the program electrode. The switching means may comprise a switch having a first node, a second node, and a control node, wherein voltage is applied to the control node to activate the switch to provide a connection between the first node and the second node. The switching means may comprise a pass-gate. The switching means may comprise an NMOS transistor. The switching means may comprise a PMOS transistor. The switching means may comprise a MEMS switch. | 08-20-2009 |
20090207718 | Information storage devices using magnetic domain wall motion and methods of operating the same - An information storage device using magnetic domain wall motion and a method of operating the same are provided. The information storage device includes a magnetic track having a plurality of magnetic domains and magnetic domain walls arranged alternately. A current supply unit is configured to apply current to the magnetic track, and a plurality of reading/writing units are arranged on the magnetic track. The information storage device further includes a plurality of storage units. Each of the plurality of storage units is connected to a corresponding one of the plurality of reading/writing units for storing data temporarily. | 08-20-2009 |
20090252024 | Signal Processing Circuit and Reproducing Apparatus - A signal processing circuit is provided with a signal input layer having a plurality of signal input sections which receive signal input; a plurality of signal processing layers whereupon a plurality of signal processing sections, which are arranged corresponding to each of the signal input sections and processes in parallel signals from the signal input sections, are dispersed; and connecting lines for associating and connecting the signal input sections with the signal processing sections, respectively. The size of a region occupied by each of the signal processing sections on the signal processing layers is larger than the arrangement intervals between the signal input sections on the signal input layers. | 10-08-2009 |
20090262636 | WIRE-ASSISTED MAGNETIC WRITE DEVICE INCLUDING MULTIPLE WIRE ASSIST CONDUCTORS - A magnetic device includes a write element including a write element tip, and a conductive coil for carrying a write current to induce a first field in the write element. A first conductor proximate a trailing edge of the write pole tip is operable to carry a first assist current to generate a second field that augments the first field. A second conductor proximate a leading edge of the write pole tip is operable to carry a second assist current to generate a third field that augments the first field. First and second side shields are on opposing sides of the write element in a cross-track direction. | 10-22-2009 |
20090262637 | PASSIVE STYLUS FOR CAPACITIVE SENSORS - A passive stylus for capacitive sensors comprises a tip and a shaft. The tip is configured to couple electrically with a capacitive sensing device and to couple physically and electrically with the stylus shaft. The tip comprises a contact surface, a support region, and a flexible region. The contact surface is configured to contact a device surface associated with the capacitive sensing device. The flexible region is disposed between the contact surface and the support region. The flexible region comprises a hardness gradient. The support region is configured to provide structural support to the flexible region. | 10-22-2009 |
20090262638 | SPIN-TORQUE MEMORY WITH UNIDIRECTIONAL WRITE SCHEME - Spin torque magnetic memory elements that have a pinned layer, two free layers, and a current-blocking insulating layer proximate to at least one of the free layers. The resistive state (e.g., low resistance or high resistance) of the memory elements is altered by passing electric current through the element in one direction. In other words, to change from a low resistance to a high resistance, the direction of electric current is the same as to change from a high resistance to a low resistance. The elements have a unidirectional write scheme. | 10-22-2009 |
20090285082 | ELECTRIC FIELD READ/WRITE HEAD, METHOD OF MANUFACTURING THE ELECTRIC FIELD READ/WRITE HEAD, AND INFORMATION STORAGE DEVICE INCLUDING THE ELECTRIC FIELD READ/WRITE HEAD - An electric field head includes a body portion and a read head having a channel layer provided on an air bearing surface (ABS) of the body portion facing a recording medium and a source and a drain contacting both ends of the channel layer. The electric field head is manufactured by defining a head forming portion of a substrate, separating the head forming portion from the substrate, forming an ABS pattern on a side surface of the separated head forming portion, and forming a channel layer for a read head on a surface of the head forming portion where the ABS pattern is formed. An information storage device includes a ferroelectric recording medium and the electric field head. | 11-19-2009 |
20090310472 | METHOD AND STRUCTURE FOR ULTRA-HIGH DENSITY, HIGH DATA RATE FERROELECTRIC STORAGE DISK TECHNOLOGY USING STABILIZATION BY A SURFACE CONDUCTING LAYER - A method and structure for a ferroelectric storage medium, includes a metallic underlayer and a ferroelectric data layer over the metallic underlayer. A layer over the ferroelectric data layer has a charge migration rate faster than a charge migration rate of the ferroelectric data layer. | 12-17-2009 |
20090316564 | ELECTRIC FIELD READ/WRITE APPARATUS AND METHOD - Provided are an electric field read/write apparatus and method, which reproduce information written in a recording medium by using an electric field read/write head including a channel. In the electric field read/write apparatus and method, an electric field generated from the recording medium is modulated by using a modulation signal, a variation in the modulated electric field is detected, and a voltage signal determined according to the detected variation is demodulated and information written in the recording medium is determined according to a result of the demodulation. | 12-24-2009 |
20090323506 | Data storage medium, data storage device containing same, and method of manufacturing data storage device containing same - A data storage medium includes a piezoelectric film ( | 12-31-2009 |
20100002563 | MEDIA WITH TETRAGONALLY-STRAINED RECORDING LAYER HAVING IMPROVED SURFACE ROUGHNESS - A media for storing information comprises a substrate, a conductive layer formed over the substrate, and a ferroelectric layer epitaxially formed on the conductive layer. The ferroelectric layer includes an a-lattice constant that is substantially matched to an a-lattice constant of the conductive layer and an average c-lattice constant that is longer than an average c-lattice constant of a bulk-grown ferroelectric layer. | 01-07-2010 |
20100008209 | INFORMATION RECORDING/REPRODUCING DEVICE - An information recording/reproducing device according to an aspect of the present invention includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having one of a Wolframite structure and a Scheelite structure. | 01-14-2010 |
20100014412 | INFORMATION RECORDING/REPRODUCING APPARATUS AND METHOD - An information recording/reproducing device is provided with a recording medium with a recording surface, a plurality of probes that carry out at least either record processing or reproduction processing by scanning a plurality of information tracks on the recording surface, a position detecting means that detects a position of at least one information track by using the probe for every plural divided regions into which the recording medium is divided in a direction intersecting the plural information tracks and which contain at least one information track, and a track control means that controls tracking of the probe used for at least either record processing or reproduction processing for every plural divided regions. Thus, the device structure can be simplified. | 01-21-2010 |
20100039919 | Cantilever Structure for Use in Seek-and-Scan Probe Storage - An information storage device comprises a media including a ferroelectric layer formed over a conductive layer, a tip substrate including a bottom actuation electrode, the tip substrate arranged opposite the media, and a cantilever connected with the tip substrate at a fulcrum and actuatable toward the media. The cantilever includes a first portion and a second portion, with the fulcrum located between the first portion and the second portion. The first portion is conductive and arranged over the bottom actuation electrode while a top actuation electrode is associated with the second portion so that the top actuation electrode is opposite the media. A first potential is applied to the bottom actuation electrode to generate electrostatic force between the bottom actuation electrode and the first portion and a second potential is applied to the top actuation electrode to generate electrostatic force between the top actuation electrode and the conductive layer. The cantilever rotates when the first potential and the second potential are applied so that the tip contacts the media. | 02-18-2010 |
20100046350 | RECORDING/REPRODUCING APPARATUS - A recording/reproducing apparatus ( | 02-25-2010 |
20100054111 | ASYMMETRIC WRITE FOR FERROELECTRIC STORAGE - A method of writing to ferroelectric storage medium includes the steps of applying a first write voltage to a ferroelectric layer for writing a first bit in a first polarization direction and applying a second write voltage to the ferroelectric layer for writing a second bit in a second polarization direction opposing the first polarization direction. The first write voltage having a first magnitude, and the second write voltage having a second magnitude being greater than the first magnitude. The ferroelectric layer having a ferroelectric imprint polarization direction, and the first polarization direction being substantially the same as the ferroelectric imprint polarization direction. The ferroelectric medium contains first bits with a first surface area that is substantially equal to second bits surface area. A probe storage apparatus can use this method and ferroelectric medium. | 03-04-2010 |
20100074092 | Reducing Spin Pumping Induced Damping of a Free Layer of a Memory Device - A system and method of reducing spin pumping induced damping of a free layer of a memory device is disclosed. The memory device includes an anti-ferromagnetic material (AFM) pinning layer in contact with a bit line access electrode. The memory device also includes a pinned layer in contact with the AFM pinning layer, a tunnel barrier layer in contact with the pinned layer, and a free layer in contact with the tunnel barrier layer. The memory device includes a spin torque enhancing layer in contact with the free layer and in contact with an access transistor electrode. The spin torque enhancing layer is configured to substantially reduce spin pumping induced damping of the free layer. | 03-25-2010 |
20100085863 | RETUNING OF FERROELECTRIC MEDIA BUILT-IN-BIAS - Provided herein are embodiments for adjusting a built-in bias of a media including a conductive layer and a ferroelectric layer above the conductive layer. In certain embodiments, a voltage signal is applied between the conductive layer of the media and an electrode (provided over at least a portion of the ferroelectric layer) to thereby tune the built-in bias so that the built-in bias moves in a direction of (i.e., towards) the desired built-in bias. In other embodiments, the temperature of the at least a portion of the ferroelectric layer of the media is elevated to thereby tune the built-in bias so that the built-in bias moves in a direction of (i.e., towards) the desired built-in bias. The desired built-in bias can be a zero built-in bias, or a non-zero built-in bias. | 04-08-2010 |
20100103806 | SEEK AND SCAN PROBE (SSP) CANTILEVER STOP STRUCTURES - MEMS storage devices and associated systems and structures are generally described. In one example, a micro-electro-mechanical (MEMS) storage device includes a substrate, a lateral actuation structure coupled with the substrate, a micro-electro-mechanical (MEMS) probe coupled with the lateral actuation structure, the MEMS probe having a first end, a second end having a probe tip, and a longitudinal axis extending between the first end and the second end, wherein the second end can be actuated in a direction substantially normal to a surface of the substrate, and one or more stop beam structures coupled with the lateral actuation structure to restrict motion of the MEMS probe in the direction substantially normal to the surface of the substrate. | 04-29-2010 |
20100182892 | DATA STORAGE MEDIUM AND METHOD FOR SCANNING A STORAGE MEDIUM - A data storage medium stories data in the form of marks, said marks being written and/or read by an array of probes. The storage medium further includes a plurality of data fields, each field including an area of the storage medium which, in use, is scanned for reading and/or writing by an associated one of the array of probes. The data fields include operational data fields having operational data for operating said scanning stored herein, wherein the operational data fields are arranged in a plurality of clusters, each cluster including a plurality of adjacent operational data fields. The invention also provides a method of scanning the data storage medium with the probe array, in which a target data field is determined and an operational data cluster closest to the target data field is selected and the operational data stored therein is used to control parameters of the scanning. | 07-22-2010 |
20100195475 | DEVICE AND METHOD FOR INFORMATION MASS STORAGE - A device for mass storage of information, the device comprising: a substrate ( | 08-05-2010 |
20100208573 | METHOD AND DEVICE FOR DETECTING FERROELECTRIC POLARIZATION - An information storage device comprises a media including a ferroelectric layer and a conductive layer and a cantilever adapted to be actuated toward the media. A tip extends from the cantilever and an electrode associated with the cantilever. When the cantilever is actuated, the tip applies a contact force to strain the media so that a charge is coupled from the ferroelectric layer to the tip. A signal is applied to the electrode to generate electrostatic force between the electrode and the conductive layer, causing the cantilever to vibrate based on a frequency of the signal. Vibration of the cantilever causes the contact force applied by the tip to the media to vary. Polarization of the ferroelectric layer can be determined based on one or both of a baseband signal generated by the charge accumulated at the tip and an upper-band signal generated by the variation in phase of the charge accumulated at the tip. | 08-19-2010 |
20100226237 | RANDOM READ/WRITE PERFORMANCE OF PROBE STORAGE MEMORY DEVICES - Current probe-type memory architecture assumes that the minimum chunk of data that a probe tip can access is one entire track and perhaps only four out of five-thousand, for example, probes participate in the access thereby degrading performance. By subdividing the track into D finer chunks or data zones, D times more probes can cooperate to read out the data, hence increasing the data throughput by Dx. Each tip now only scans approximately one Dth of the track and hence the scan time is reduced by a factor D, while D probes are being utilized in parallel. | 09-09-2010 |
20100260033 | DATA RETENTION OF FERROELECTRIC FILMS BY CONTROLLING FILM COMPOSITION AND STRAIN GRADIENT FOR PROBE-BASED DEVICES - For a probe based data storage (PDS) device a ferroelectric film stack may be used as a media to store data bits by polarizing areas of the film as either an up domain or a down domain to represent bits. However a built-in-bias field (BBF) may create domain retention problems. By growing the ferroelectric films with stress and composition gradients this may generate polarization gradients which reduce the bias field. Thus, the retention (or imprint) may be improved with minimized BBF. | 10-14-2010 |
20100284263 | Data recording / reproducing apparatus and method using needle-shaped member - The data to be recorded onto a recording medium is directly spread and then recorded onto the recording medium through a needle-shaped member, such as a probe. Upon reproducing the data, the data read from the recording medium is de-spread and reproduced. | 11-11-2010 |
20100296382 | DOUBLE-ELECTRODE CANTILEVER ACTUATION FOR SEEK-SCAN-PROBE DATA ACCESS - A seek-scan-probe memory device, utilizing a media electrode to allow active cantilevers to contact the storage media, and a pull electrode to pull up cantilevers away from the storage media when in an inactive mode. Other embodiments are described and claimed. | 11-25-2010 |
20100315938 | LOW DISTORTION PACKAGE FOR A MEMS DEVICE INCLUDING MEMORY - A package to receive a memory device including an electromagnetic motor comprises a body having a top surface and a bottom surface. Conductive leads extend through the body so that the conductive leads are at least partially exposed within the package. A base is connectable with the bottom surface of the body, and a lid is connectable with the top surface of the body. The base and the lid have substantially matched thermal expansion characteristics and provide magnetic flux return paths for the electromagnetic motor. | 12-16-2010 |
20100322064 | METHOD FOR DETECTING FLUORESCENT SIGNALS IN A BIOLOGICAL SAMPLE - A method for automated microscopic analysis wherein the test protocol is obtained from interrogatable data affixed to each microscope slide. The method further comprises the algorithms that implement the test protocol. | 12-23-2010 |
20110038246 | VOLTAGE PATTERN FOR FERROELECTRIC RECORDING HEAD - The presently disclosed technology teaches an improved voltage pattern for conductive tips utilized as moveable top electrodes for writing data bits into ferroelectric media. A conductive tip is dragged in contact or near contact with a ferroelectric surface forming a moveable top electrode on a ferroelectric media disk. A metallic film is deposited onto a bottom-side of the ferroelectric media forming a conductive bottom electrode. Applying electrical voltage pulses between the conductive tip and the bottom electrode induces polarization switching of the ferroelectric media under the head. The improved voltage pattern incorporates positive and negative overshoot voltages to induce a polarization switch in the ferroelectric media and positive and negative drag voltages to expand a polarized region on the ferroelectric media. Potential benefits of the improved voltage pattern include reduced cross-track blooming and reduced along-track blooming resulting in a more uniform track width and bit series length. | 02-17-2011 |
20110058465 | MICROELECTROMECHANICAL DEVICE HAVING AN ELECTROMAGNETIC MICROMOTOR, IN PARTICULAR MASS STORAGE DEVICE MADE BY PROBE STORAGE TECHNOLOGY - A microelectromechanical device that includes a fixed supporting body, at least one semiconductor body, which is movable with respect to the fixed supporting body, and at least one micromotor for moving the semiconductor body with respect to the fixed supporting body, the micromotor having at least one permanent magnet and a coil, which are coupled together and are movable with respect to one another. A ferromagnetic guide is coupled to the magnet and is shaped so as to concentrate lines of magnetic field generated by the magnet towards the coil. | 03-10-2011 |
20110063969 | SEMICONDUCTOR INTEGRATED CIRCUIT - The semiconductor integrated circuit incorporates a PLL circuit including a phase-frequency comparator | 03-17-2011 |
20110194398 | MEMS MEMORY MICROPROBE AND RECORDING APPARATUS - According to one embodiment, a MEMS memory microprobe includes a probe tip, a lever, and a base. The probe tip is arranged to oppose a recording medium and is brought into contact with the recording medium to perform recording or reproduction of information when a current or voltage is applied between them. In the probe tip, a plurality of electrodes used in the recording or reproduction and a plurality of support portions which form the probe tip together with the electrodes are alternately arranged, and the electrodes and the support portions form a single plane which opposes the recording medium. | 08-11-2011 |
20110216642 | DOUBLE ELECTRODE CANTILEVER ACTUATION FOR SEEK-SCAN-PROBE DATA ACCESS - A seek-scan-probe memory device, utilizing a media electrode to allow active cantilevers to contact the storage media, and a pull electrode to pull up cantilevers away from the storage media when in an inactive mode. Other embodiments are described and claimed. | 09-08-2011 |
20110242961 | FERROELECTRIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME, INFORMATION PROCESSING DEVICE, AND METHOD OF PROCESSING INFORMATION - A ferroelectric recording medium includes a ferroelectric recording layer on an electrode layer, which includes an insulative layer on the ferroelectric recording layer, and includes non-continuous electrically conductive coating portions on the insulative layer. | 10-06-2011 |
20120294137 | FERROELECTRIC READ HEAD - An apparatus can include a read head formed in a semiconductor layer of an air bearing surface, the read head comprising a channel region formed between a source and drain which are doped to a higher conductivity than the channel region; wherein the channel region is configured to generate a charge carrier depletion region in response to a first ferroelectric dipole direction, and to accumulate charge carriers in response to a second ferroelectric dipole direction. | 11-22-2012 |
20130003521 | ARRANGEMENT AND METHOD TO PERFORM SCANNING READOUT OF FERROELECTRIC BIT CHARGES - An arrangement, a method and a system to read information stored in a layer of ferroelectric media. The arrangement includes a layer including a ferroelectric media having one or more ferroelectric domains holding bit charges, a domain corresponding to information; a probe having a tip, wherein the media and the tip are adapted to move relative to one another such that the tip scans the ferroelectric domains of the media while applying a contact force to the domains to generate a direct piezoelectric effect within the domains; and circuitry coupled to the tip and adapted to generate a signal in response to an electrical coupling between the tip and the domains while scanning the tip in contact with the domains, the signal corresponding to a readout signal for ferroelectric bit charges stored in the media | 01-03-2013 |
20130021894 | TRANSDUCING DATA USING HIGH FREQUENCY FERROELECTRIC READ DEMODULATION - Apparatus and method for transducing data from a ferroelectric data storage medium using high frequency read modulation. In accordance with some embodiments, a ferroelectric data transducer has a write electrode, a doped semiconductor layer with a source, a drain and a channel therebetween, and an insulating layer disposed between the channel and the write electrode. A write circuit applies a time varying write signal at a first frequency to the write electrode to write a corresponding sequence of data bits to an adjacent ferroelectric data storage medium. A read circuit reads the sequence of data bits from the data storage medium by applying a time varying read signal at a higher, second frequency to the write electrode and detecting changes in electrical resistance of the channel. | 01-24-2013 |
20130058202 | SEEK SCAN PROBE (SSP) CANTILEVER TO MOVER WAFER BOND STOP - A seek-scan probe (SSP) memory involves multiple-wafer bonding needing precision small gaps in between. Solder reflow bonding is typically used to join the wafers due to its reliability and ability to hermetically seal. However, solder reflow bonding may not provide a consistently controllable gap due to flowing solder during the bonding process. Thus, a bond stop technique and process is used to provide accurate cantilever to media gap control. | 03-07-2013 |
20130064062 | STORAGE DEVICE - A storage device includes a storage medium and a plurality of probes. The probes each have a recording/reproducing portion. The probes include a first probe, a second probe spaced from the first probe in a first direction, and a third probe spaced from the first probe in the first direction and in a second direction different from the first direction. A distance X | 03-14-2013 |
20130077461 | STORAGE DEVICE - A storage device includes a recording medium, a probe, a substrate, and a processing unit. The recording medium stores a signal. The probe reads or writes the signal to/from the recording medium. The substrate is provided with the probe via a conductive anchor interposed therebetween and a first connection terminal connected to the probe. The processing unit is provided on the substrate and has a second connection terminal. The second connection terminal is connected to the first connection terminal. | 03-28-2013 |