Abstract: A disk drive controller controls a vacuum pump to establish a vacuum within a disk drive housing to conserve power while ensuring that the head of the drive does not crash into the disk. The controller compares actual spindle power to a predetermined maximum power threshold and actual fly height to a calibration fly height to control the pump. The calibration values are derived by comparing no-load and loaded values for a parameter, e.g., error rate, disk temperature, and so on.

Abstract: A slider is provided for actively controlling a fly height of the slider relative to a data storage disc during operation of a data storage system. The slider includes a slider body having front and back surfaces, a length and a crown curvature on the front surface along the length. The slider also includes first and second elongated rails which are positioned on the front surface along the length of the slider body and form first and second bearing surfaces. Each bearing surface includes a leading portion, a trailing portion and a waist portion, wherein the waist portion is wider than the leading and trailing portions and has a maximum width within a middle half of the length of the slider body. A deformable material is positioned on the slider body having a dimension that is changeable in response to an electrical control signal applied in a deformable material, wherein a change in the dimension causes a change in the crown curvature.

Abstract: A method and apparatus are provided for enhanced performance in the presence of stationary position error signal (PES) outliers in a direct access storage device (DASD). A plurality of PES samples are obtained from a plurality of servo sectors around a track. Utilizing the PES samples, a normalized outlier value is computed for each of the plurality of servo sectors around the track. The computed normalized outlier values are sequentially stored and compared with a set threshold value. A stationary PES outlier is identified responsive to each stored outlier value being greater than the set threshold value. Each identified stationary PES outlier is utilized during predefined operations of the DASD. During a recalibration mode of the DASD, a different track for feedforward generation is selected to avoid an identified stationary PES outlier.

Abstract: A device for precision alignment of a write element of a tape head to a transport direction of a media that is transported across the tape head is disclosed. The tape head includes at least one alignment element that is cofabricated with the write element so that both the write element and the alignment element have a fixed orientation with respect to a magnetic axis of the tape head. The alignment element and the write element can be fabricated on the tape head using standard microelectronic photolithographic processes. Preferably, the tape head includes a plurality of alignment elements. Those alignment elements are operative to write alignment transitions onto the media. The alignment transitions can be observed to determine if they are indicative of the write element having a predetermined orientation with respect to the transport direction.

Abstract: To provide a disk drive, a manufacturing method thereof, and a disk-drive controller which are capable of improving yield without increasing costs so significantly. When track-following control is performed, HDC detects the current position of a read/write head, based on the reproduced output of a servo sector from a channel unit, and makes a calculation of servo data by employing both an integral parameter corresponding to a target track to be read onto a RAM and the detected current position of the read/write head.

Abstract: A method, apparatus, and computer program product for linearizing a position error signal of a transducer in a hard disk drive. In one embodiment, a disk including a first plurality of tracks each includes first and second servo bursts defining a track reference line, and a second plurality of the first plurality of tracks on the disk each includes third and fourth servo bursts defining a second plurality of different position offsets from the track reference line of the second plurality of tracks. Each of the second plurality of different position offsets being at a different value than any other position offset. The second plurality is no greater than the first plurality. The second plurality of different position offsets are used for linearizing a position error signal.

Abstract: A vernier magnetic recording head comprises multiple read and write transducers. The write transducers are equally spaced a first distance apart and the read transducers are equally spaced a second distance apart. The write transducers initially write a plurality of equally spaced servo tracks which can be subsequently tracked by the read transducers. The write transducers may then be used to successively write a plurality of data tracks to one side of each servo track. The read transducers are positioned relative to the write transducers such that one read transducer is always positioned to track a servo track while the write transducers are writing the data tracks, thereby positioning the data tracks equidistant and parallel to or concentric with the servo tracks. One read transducer is positioned to track a servo track as the head is positioned at an extreme so that read transducers read data from the furthest data tracks, and the head may be positioned to write an adjacent set of new servo tracks.

Abstract: A method for adjusting a tape wrap angle is described comprising the steps of operating the tape system to generate or regenerate an electrical signal in the head from the tape, either increasing or reducing the tape wrap angle as appropriate until a signal from the tape head reappears or goes to zero, then increasing the wrap angle until the desired angle is achieved as measured by the signal from the head or by moving the tape support a fixed amount. A tape recording and/or reading system with adjustable wrap angles is described which can be used with the method of the invention. The system includes one or more rollers mounted on an adjustable shaft with an eccentric or axially offset portion supporting the roller. Preferably for a two or multibump head an adjustable shaft and roller according to the invention are located on the tape-in and tape-out side of the tape head.

Abstract: A cartridge library apparatus according to the present invention comprises door 1 provided openably to apparatus body C and having a multiplicity of cells 4 for housing cartridge W in an inner surface, shutter 2 provided in apparatus body C and covering an opening portion of apparatus body C when door 1 is open, and a driving mechanism for driving the opening/closing of the shutter. Shutter 2 comprises a plurality of shutter brackets 17 to 24 in plane plate shape swingably coupled by hinges and is taken up around rotor 15 with a motor of the driving mechanism which is activated in response to the opening and closure of the door.

Abstract: A lubricating perfluoropolyether (PFPE) composition for lubricating one or more disks in a disk drive system may be formed by providing a first component of PFPE molecules having an aggregate vapor pressure in the range of 1×10−6 to 1×10−11 atm and a second component of PFPE molecules comprising at least 5% of the total number of molecules of the first component, wherein the second component includes an aggregate vapor pressure lower than that of the first component. The first and second components are mixed together to form a homogeneous composition, which may be in the liquid form. The composition may be introduced into a reservoir in a vapor phase lubricant reservoir system in a disk drive enclosure.

Abstract: A disk drive includes a spindle motor assembly mounted on an enclosure and at least two disks. The disks are mounted on a hub of the spindle motor assembly. Each of the disks have a magnetic medium deposited between an inner circumference and an outer circumference. The disks define a volume therebetween wherein airflow is generated when the disks rotate. The disk drive also includes an airflow spoiler positioned between the disks. The airflow spoiler has a spoiler mounting portion and a non-data bearing extending portion. The spoiler mounting portion is configured to be mounted on the hub of the spindle motor assembly. The non-data bearing extending portion is connected to the spoiler mounting portion and extends outwardly therefrom into the volume defined between the disks. The non-data bearing extending portion extends at least partially over the magnetic medium.

Abstract: A recording and reproducing separation type magnetic head has a recording head with an upper core and a lower core that writes information on a magnetic disk and a reproducing head with an upper magnetic film and a lower magnetic film, as sealed layers, that reads the information from the magnetic disk. A thickness of the upper part of the upper core is less than a thickness of the tip minute of the upper core. The magnetic head has excellent overwriting performance and achieves high speed transfer.

Abstract: A thin film read/write head with a high performance inductive write section that incorporates a single layer coil with an improved fabrication method of a center tab of the single layer coil. The center tab is formed before the main body of the single layer coil is formed. Several advantages can thus be achieved. The coil resistance and inductance can be monitored for all the devices immediately after the coil fabrication to improve yield by identifying additional processing or rework before final production. Several conventional wafer processing steps can be eliminated, thereby shortening the cycle time of wafer processing. The chance of corrosion or delamination of the second pole P2 is significantly reduced.

Abstract: A magnetic head including an upper pole and a lower pole for generating a leakage magnetic flux to magnetize a recording medium to have a predetermined pattern, wherein the upper pole has a structure in which the central portion of a side opposite to the recording medium is thicker than the edges of the side. In this magnetic head, the upper pole has a shape in which its central portion protrudes higher than its edges. Thus, the shape of a magnetic field distributed can be maintained rectangular even if the width of the upper pole is reduced, which enables an increase in the track density of a recording medium.

Abstract: A top pole layer has a first portion and a second portion. The first portion has an end located in an air bearing surface, has a constant width equal to a write track width, and includes a pole portion. The second portion is coupled to the other end of the first portion and includes a yoke portion. The first portion, a write gap layer, and a part of the bottom pole layer closer to the write gap layer have an equal width in a region where the first portion of the top pole layer and the bottom pole layer are opposed to each other via the write gap layer. The thickness of the first portion of the top pole layer in a region extending from the air bearing surface to a predetermined position is smaller than the thickness of the other part of the top pole layer adjacent to this region.

Abstract: A disk cartridge in which a pair of shutter members can be opened and closed smoothly and reliably, and a dust-proof property and an airtightness of a large opening portion can be increased by reducing a space between a pair of shutter members and a cartridge housing as much as possible. The disk cartridge comprises a cartridge housing in which a disk compartment is formed between an upper shell and a middle shell by overlapping the upper shell, the middle shell and the lower shell and the middle shell is supported by the upper shell and the lower shell so as to become freely rotatable, an optical disk rotatably stored within the disk compartment and a pair of shutter members attached to the middle shell in such a manner that they can be moved in the plane direction on the same plane. A shutter opening and closing mechanism for opening and closing opening portions by moving the pair of shutter members based rotation of the middle shell.

Abstract: Disclosed herein is a magnetic tape cartridge including a cartridge case in which a single reel with magnetic tape wound on an outer periphery of a reel drum is rotatably housed. The magnetic tape cartridge further includes a locking member, provided within the reel drum so that it is movable between a locking position and an unlocking position in the axial direction of the reel. The locking member is used for locking the reel to restrain rotation of the reel during periods of non-use. In the magnetic tape cartridge, a first radial clearance between the locking member and the reel drum is set smaller than a second radial clearance between the reel and the cartridge case so that when the magnetic tape cartridge is vertically loaded into a cartridge drive unit, chucking failure is prevented.

Abstract: A system and method for cleaning a tape media, such as a magnetic tape. The system preferably includes first and second cleaning heads. The first cleaning head has a plurality of spaced ridges defining a curved, tape-receiving face. The second cleaning head has including a plurality of lands spaced by shallow cavities configured to establish a sub-ambient condition. During use, a tape is transversed over the first cleaning head, with contact at leading edges formed by the ridges removing relatively large and loose particles. Relative to the second cleaning head, the tape partially wraps about a leading corner of the lands, due to the sub-ambient condition within the shallow cavities, facilitating removal of small, tacky debris. Processing by the cleaning heads simulates multiple passes over a magnetic head, thereby stabilizing magnetic tape. In alternative embodiments, the system includes only one of the first or second cleaning heads.

Abstract: A suspension comprises a baseplate having a boss portion, a beam portion with a flexure, and a hinge member. The hinge member includes a connecting portion that can bend in the thickness direction thereof between the baseplate and the beam portion. If the length of the suspension from a pivot portion on the distal end portion of the beam portion to the center of the boss portion is 14.5 mm, the thickness of the baseplate is 0.175 mm or greater, the width of the baseplate is 4.5 mm or greater, the length of the connecting portion of the hinge member is 0.7 mm or shorter, and the length of the baseplate is 5.04 mm or shorter.

Abstract: The present invention discloses a new kind of multi layer suspension and a method for making this. The multi-layer suspension of the present invention is comprised of a rectangular base plate section, a load beam and a flexure. The load beam can be further divided into a bending area adjacent to the base plate and a rigid area contiguous to the bending section. The suspension assembly is made up of three layers, wherein an adhesive layer is sandwiched between two stainless steel layers with parts of one of the stainless steel layers being etched off. The structure of the multi-layer suspension of the present invention overcomes the problems of etching variations and misalignment that exist in the traditional production of the suspension.

Abstract: The suspension of a disk drive incorporates controlled attachment of the gimbal to the slider. The gimbal has at least one wall or enclosure formed on its contact surface which receives a desired amount of adhesive or solder paste. The wall or enclosure confines the adhesive or paste to an exact location and also controls the amount of adhesive or paste that contacts the slider upon assembly. This controlled attachment between the gimbal and slider enhances performance of the read/write head attached to the slider. Use of a meltable solder paste also allows the suspension to be reworked by improving the ability to separate the slider from the gimbal after initial assembly. The contact surface of the gimbal may be modified to include a metallic strip which contacts the adhesive. Use of an electrically conductive bonding material in combination with the metallic strip assists in dissipating electric static which may build up on the read/write head.

Abstract: A head suspension having a load beam and flexure both including electrical components formed integrally therewith. The load beam is formed using subtractive methods such as chemical etching to reduce the cost of forming the load beam. The flexure is formed using additive methods such a sputtering, evaporation, or photolithographic techniques to allow the electrical components to be relatively low mass and flexible. The flexure electrical components are electrically interconnected with the load beam electrical components. In this way, the head suspension is formed having reduced cost and desirable dynamic characteristics.

Abstract: In an Integrated Lead Suspension system, it is desired that the stainless steel suspension is grounded to a controlled ground potential. This requires creating a grounding path between the stainless steel suspension and a copper trace layer through a layer of dielectric material that separates the stainless steel suspension and the copper layer. The copper trace layer and subsequently the stainless steel suspension can then be grounded to a controlled ground potential. This invention proposes several methods of creating a ground path between the stainless steel suspension and the copper trace layer.

Abstract: A precise positioning actuator to be fixed to a head slider provided with at least one head element and to a support, for precisely positioning the at least one head element, includes a pair of movable arms formed by a metal plate. These movable arms are capable of displacing in response to a drive signal applied to the actuator along a direction crossing a plate plane of the movable arms, and catch the head slider in a space between them.

Abstract: A spin-valve thin-film magnetic element includes a substrate, a laminate formed on the substrate, biasing layers, and conductive layers. The laminate includes a free magnetic layer; a first nonmagnetic conductive layer, a first pinned magnetic layer and a first antiferromagnetic layer deposited on the upper surface, away from the substrate, of the free magnetic layer; a second nonmagnetic conductive layer, a second pinned magnetic layer and a second antiferromagnetic layer deposited on the lower surface, near the substrate, of the free magnetic layer. The conductive layers supply a sensing current to the free magnetic layer. The magnetization vectors of the first and second pinned magnetic layers are antiparallel to each other. The first and second antiferromagnetic layers are composed of an alloy comprising Mn and at least one element selected from the group consisting of Pt, Pd, Ir, Rh, Ru, Os, Au, Ag, Cr, Ni, Ne, Ar, Xe and Kr.

Abstract: A plurality of magnetoresistive heads are arranged on a wafer substrate. A plurality of electrode pads are arranged on the wafer substrate in a first direction. Each electrode pad is connected to an associated magnetoresistive head. Respective adjacent electrode pads are shifted from each other in a second direction perpendicular to the first direction. The shifted amount of the adjacent pads in the second direction is larger than a dimension of the electrode pad in the second direction.

Abstract: A read/write head with a bottom shield on a slider substrate and a shared shield spaced apart from the bottom shield. A write head is deposited on the shared shield. A read sensor is spaced apart by reader magnetic gaps from the bottom shield and the shared shield. Electrically insulating layers in the reader magnetic gaps form a thermal resistance between the read sensor and the shields. A thermally conducting nonmagnetic layer in a reader magnetic gap reduces the thermal resistance without a corresponding reduction in the reader magnetic gaps.

Abstract: This invention presents a method and structure for magnetic spin valves. The spin valve structure includes a first ferromagnetic layer separated from a second ferromagnetic layer by a non-magnetic layer. The spin valve structure also includes a first specular scattering layer separated from a second specular scattering layer by the first ferromagnetic layer, the non-magnetic layer, and the second ferromagnetic layer. The first ferromagnetic layer can include a free layer and the non-magnetic layer can include a spacer layer. The second ferromagnetic layer can include a pinned layer or a reference layer. The specular scattering layers can include a material such as Y2O3, HfO2, MgO, Al2O3, NiO, Fe2O3, and Fe3O4. The specular scattering layers can also be used in a SAF structure. In the SAF structure, the antiferromagnetic coupling material can be co-deposited with the second specular scattering layer.

Abstract: A spin valve sensor system and method for fabricating the same is provided. Included is a free layer and a pinned layer with a spacer layer disposed between the free layer and the pinned layer. Such spacer layer is oxidized for improving operational characteristics of the spin valve sensor.

Abstract: A spin valve sensor has a pinned layer structure which includes first, second and third pinned films wherein the first pinned film is nickel iron and is located between the second and third pinned films which are cobalt iron. This structure significantly reduces the magnetostriction of the free layer structure of the spin valve sensor to an acceptable level.

Abstract: The present invention provides a spin-valve thin film magnetic element adaptable to high-density recording and having excellent heat resistance. The track width is defined by bias layers formed on flat portions of a free magnetic layer. The flat portions formed both sides of a track groove with no bias layer remaining in the groove. The spin-valve thin film magnetic element has an antiferromagnetic layer, a pinned magnetic layer, a nonmagnetic conductive layer, a free magnetic layer, bias layers, and conductive layers, which are formed on a substrate. The free magnetic layer forms the track groove on the side opposite to the pinned magnetic layer. The track groove has a width corresponding to the track width.

Abstract: A spin valve sensor is provided with a negative ferromagnetic coupling field −HFC for properly biasing a free layer and a spin filter layer is employed between the free layer and a capping layer for increasing the magnetoresistive coefficient dr/R of the spin valve sensor. A top portion of the free layer is oxidized for improving the negative ferromagnetic coupling field −HFC when the spin filter layer is employed for increasing the magnetoresistive coefficient dr/R.

Abstract: A magnetoresistive head reproduces information recorded on a recording medium with high recording density, suppressing generation of Barkhausen noise. A magnetoresistive effect element in the head is a flat multi-layer film in which a free magnetic layer is set to a lowest layer. The head also includes a non-magnetic substrate, an insulating layer contacting a center portion of a lower surface of a substrate side of the free magnetic layer, and a pair of electrode layers. The electrode layers are formed with the insulating layer in between, contacting both edge portions of the free magnetic layer. The electrodes are formed with the same surface height as the surface height of the insulating layer. A pair of magnetic wall control layers suppress movement of a magnetic wall of the free magnetic layer.

Abstract: An electrically conductive sidewall for an electromagnetic transducer having a magnetoresistive sensor is formed as a layer oriented substantially perpendicular to other layers of the sensor, and is used as a mask for defining the width of the sensor. This allows the sensor to be made much thinner than conventional sensors, providing higher resolution in a track width direction. The sidewall can be nonmagnetic, serving as a spacer between the magnetic sensor layers and an adjacent magnetic shield without the need for a protective cap to guard against damage from polishing and wet etching. Alternatively, the sidewall can be magnetic, serving as an extension of the shield. In either case, the sidewall reduces the effective length of the sensor for linear resolution, sharpening the focus of the sensor and increasing linear density. Also reduced is the tolerance for error in sensor width and length.

Abstract: A tunneling magnetoresistive head according to the present invention includes a tunneling magnetoresistive stack having a free layer, a barrier layer, a pinned layer and a pinning layer. The tunneling magnetoresistive stack is configured to operate in a current perpendicular to plane (CPP) mode, wherein a sense current flows substantially perpendicular to a longitudinal plane of the barrier layer. The tunneling magnetoresistive head includes a first shield and a second shield coupled to opposing sides of the tunneling magnetoresistive stack. The first and the second shields act as electrodes to couple the sense current to the tunneling magnetoresistive stack. The first shield has a concave shape and substantially surrounds the free layer. The tunneling magnetoresistive head also includes a spacer layer and a layer of antiferromagnetic material. The spacer layer is formed on the free layer. The layer of antiferromagnetic material is formed on the second spacer layer.

Abstract: A magnetic sensor for reproducing information recorded on a magnetic recording medium senses an external magnetic field using a spin-filtered sensor current flowing through a non-magnetic layer.

Abstract: A controller for a pulse width modulated electrical drive or a dual-mode, pulse width modulated/variable voltage inverter drive is coupled to sensors within a filter at the drive output. Upon detecting failure of the filter or filter components (e.g., a capacitor short or blown fuse) through the sensors, the controller either shuts down the drive or automatically switches the drive operating mode to an output mode which does not require filtering. Damage to the electrical system or downhole equipment from transmission of unfiltered or improperly filtered power may thus be averted upon failure of the filter or a filter component.

Abstract: A microcircuit includes core and other portions, which receive different supply voltages from disparate sources. An electrostatic discharge protection (ESD) circuit internally connects the lower and higher voltage terminals together with a diode, poled so that the diode conducts if the nominally lower voltage supply exceeds the higher voltage supply. If the high voltage supply fails or even drops below the value of the low voltage supply, the diode conducts, and current is drawn in an amount which may overheat the microcircuit. A shut-down circuit is provided for sensing the voltage of the higher-voltage source, and shutting down the lower-voltage source any time the higher-voltage source drops below either the actual voltage or nominal voltage of the lower value source.

Abstract: The present invention provides power quality correction circuitry integrated into a single IC, therefore saving space and reducing costs while increase potential and frequency. An embodiment of the present invention discloses an integrated circuit with integrated power factor correction circuit (PFC) and MOSFET circuit. Another embodiment of the present invention provides a power factor correction circuit, a pulse width modulation (PWM) control circuit, and MOSFET circuits integrated into a single IC. Therefore, signals provided by the present invention ensure a smooth and high quality power to the system, thus improving the quality and performance of the overall system.

Abstract: An improved series-pass over-voltage protection circuit includes at least one N-channel enhancement mode MOSFET (NFET) coupling a DC voltage supply such as a motor vehicle storage battery to one or more high current electrical loads. The drain of the NFET is connected to the positive terminal of the DC voltage supply, and a high impedance gate voltage power supply biases the NFET to a fully enhanced state in normal operation to provide very low pass-through on-resistance.

Abstract: An electronic device protection circuit inhibits a voltage exceeding the rated voltage of the electronic device, which may include a secondary battery, from being applied and includes a positive temperature characteristic device and a diode that are connected in series and arranged in proximity to each other. The thermal fuse, the posistor, and the zener diode are arranged to conduct heat to each other, so that applying an overvoltage greater than the rated voltage to input terminals of the electronic device causes the current resulting from the overvoltage to flow through the zener diode that causes it to generate heat that accelerates the fusion of the thermal fuse.

Abstract: Temperature-based cooling fan control structure mainly including a thermistor for measuring ambient temperature, a voltage amplification system to indicate voltage needed for the cooling fan to rotate under the measured temperature, a magnetic induction system, a rotating speed control system for adjusting the fan rotating speed, a timing trigger capacitor periodically actuating the cooling fan to rotate when the fan is temporarily stopped under an external force, a rectification system protecting all elements in the control structure against damage due to extreme changes in voltage and current, and a voltage-stabilizing control system reducing electromagnetic noise produced in the magnetic induction system.

Abstract: The invention relates to a cost effective protective device for safeguarding an electrical device against overcurrent. The preferred exemplary embodiment is a conductor track fuse that is arranged in a hollow body. According to the invention, the hollow body has an opening that specifically allows metal vapor to escape upon tripping of the fuse. This prevents the production of an electric arc.

Abstract: A carrier assembly for a surge protection assembly includes: a connector strip; a plurality of pins extending from the connFiguresector strip; and wherein the connector strip and the plurality of pins are formed from a single piece of conductive material.

Abstract: The present invention discloses systems and methods for protecting electronic devices (switching and non-switching) such as micro electro-mechanical system (MEMS) devices and solid state relays due to lightning exposure or electrical power surges in double end exposed systems. Over voltage suppressors and over current detectors are used to limit the exposure of high voltages and currents to the MEMS and solid-state relay devices in double end exposed systems.

Abstract: Systems and methods are provided for an on-chip decoupling device and method. One aspect of the present subject matter is a capacitor. One embodiment of the capacitor includes a substrate, a high K dielectric layer doped with nano crystals disposed on the substrate, and a top plate layer disposed on the high K dielectric layer. According to one embodiment, the high K dielectric layer includes Al2O3. According to other embodiments, the nano crystals include gold nano crystals and gold nano crystals. One capacitor embodiment includes a MIS (metal-insulator-silicon) capacitor fabricated on silicon substrate, and another capacitor embodiment includes a MIM (metal-insulator-metal) capacitor fabricated between the interconnect layers above silicon substrate. The structure of the capacitor is useful for reducing a resonance impedance and a resonance frequency for an integrated circuit chip. Other aspects are provided herein.

Abstract: An IPD has a varistor of electrodes and a ZnO dielectric. A capacitor includes electrodes and a dielectric that has oxides of bismuth, magnesium, and niobium having a pyrochlore structure of type A2B2O7. The materials are applied as wet layers and are sintered for integrated production.

Abstract: A computer and method of operating same. One aspect is a computer configurable between three configurations. In a first, a display and keyboard are accessible to a user. In a second configuration, the display and a keyless interface are accessible. The third configuration is a tablet configuration. In another aspect the keyboard and keyless interface are disposed on opposite sides of a module, and a cable-less connection is provided between the module and a body of the computer housing the processor. A further aspect is a computer comprising a body and a module slidably mountable thereto and including the keyboard and keyless interface on opposite sides. The body includes a slot to slidably receive the module, with the slot having an open end. A further aspect is an adapter, and method of use therefor, for use with a notebook computer.

Abstract: Electronic apparatus with keyboard module which can be rotated and hidden. The electronic apparatus includes an electronic apparatus main body and a keyboard module. One side of the main body is provided with pivot notches. The keyboard module is pivotally connected with the side of the main body via bracket members freely pivotally inlaid in the pivot notches. The keyboard module can be turned rearward to attach to back face of the main body and hidden behind the main body for easy carriage. In addition to the virtual keyboard on the operation panel of the electronic apparatus, a user can alternatively pivot the keyboard module toward the operation panel for quickly keying in data.

Abstract: In a portable electronic apparatus, a cover device includes a stand unit provided on a cover body. The stand unit includes a support member connected to and pivotable relative to the cover body. A foldable limiting member is connected to the support member and is connected to the cover body for limiting the support member at the supporting position. The cover device is assembled removably on a user interface device for protecting an operating surface of the user interface device when the support member is in a collapsed position, where the support member lies on the cover body, and is removed from the user interface device to permit movement of the support member to a supporting position, where the support member forms an angle with the cover body for positioning the user interface device on the stand unit.