Abstract: An exciter system (1, 2) able to communicate information between an exciter unit (10) and one or more remote units (12) or between multiple exciter units (10). The exciter units (10) may include wireless type exciter devices, such as optimum exciters (14), or they may include wired equivalent type exciter devices, such as direct connect exciters (16). The exciter devices (14, 16) inject or extract RF currents (24) in the metallic framework (22) of a vehicle. The remote units (12) couple electromagnetic fields (26) with the metallic framework (22) of the vehicle. The information is exchanged with the exciter devices (14, 16) by communications equipment (20) that modulates or demodulates the RF currents (24) and/or electromagnetic fields (26) with the information. As the RF currents (24) and/or electromagnetic fields (26) reach everywhere within, on and in close proximity to the vehicle the information is communicated throughout.

Abstract: The thin film disk includes a pre-seed layer of amorphous or nanocrystalline structure which may be CrTa or AlTi or AlTa, and that is deposited upon a disk substrate. The pre-seed layer is followed by the RuAl seed layer, a Cr alloy underlayer, an onset layer composed essentially of CoCr and a magnetic layer. The onset layer has an optimal concentration of 28-33 at. % Cr and an optimal thickness of 0.5 to 2.5 nm and it increases coercivity and improves the Signal-to-Noise Ratio (SNR) of the disk.

Abstract: The design of a magnetic thin film disk, for use in a disk drive, with an amorphous or nanocrystalline pre-seed layer preferably followed by a ruthenium-aluminum (RuAl) seed layer is described. The pre-seed layer may be CrTa or AlTi. The pre-seed layer deposited over a glass substrate, for example, allows a more strongly oriented RuAl seed layer to be deposited and, thus, favorably influences the orientation and grain size in the subsequent layers which include preferably at least one Cr alloy underlayer and at least one magnetic layer.

Abstract: A process (100) and library element (14) product by that process for use with a design tool (18) to incorporate a complex electronic system (CES) (10) into a printed circuit board (PCB) (12) under development. The CES (10) is complex by virtue of having a plurality of connectors (20). The process (100) integrates physical data, and optionally also functional and other data, about the CES (10) into the library element (14). The library element (14) then may be stored and used from a conventional library (16) in the manner already widely used in the art for less complex elements.

Abstract: A secure e-mail system (10) permitting a sender (12) to send a secure e-mail (14) to one or more receivers (16). The sender (12) employs a sending unit (18) having a software module (26) to compose the secure e-mail (14), to send data about it to a security server (24), to receive back from that security server (24) a messageKey (102e) for encrypting the secure e-mail (14), and for sending it conventionally to an e-mail server (22). The receivers (16) employ receiving units (20) also having software modules (26) to receive the secure e-mail (14), to send data about it to the security server (24), and to receive back from the security server (24) the messageKey (102e) for decrypting the secure e-mail (14). The security server (24) stores a user id (102a) and password (102b) for the sender (12) and the receivers (16); a messageId (104a), a sealSalt (104j), and the messageKey (104g) for the secure e-mail (14); and a receiver address (106b) in a database (100).

Abstract: In a thin film magnetic disk, a crystalline CrNi pre-seed layer is sputtered onto a substrate such as glass, followed by a RuAl seed layer. The CrNi pre-seed layer reduces grain size and its distribution, and improves in-plane crystallographic orientation, coercivity (Hc) and SNR. In a preferred embodiment the RuAl seed layer is followed by a Cr alloy underlayer. In a preferred embodiment the Cr alloy underlayer is followed by an onset layer and a magnetic layer, or by two or more magnetic layers antiferromagnetically coupled through one or more spacer layers. The crystalline CrNi pre-seed layer allows use of a thinner RuAl seed layer which results in smaller overall grain size, as well as a reduction in manufacturing cost due to relatively high cost of ruthenium. The CrNi pre-seed layer also allows use of a thinner Cr alloy underlayer which also contributes to reduce overall grain size.

Abstract: A reassign process is provided in a disk drive system including a plurality of tracks for storing data, each of the tracks being divided into a plurality of sectors, each sector having a corresponding logical address value associated therewith. Each track has a corresponding skew associated therewith and having a nominal skew value providing adequate time for sequential access of the corresponding track from a sequentially preceding track. The reassign process is operative to reassign data sectors stored in a reassign span including a first partial track having a reassign sector, a second partial track having a spare sector corresponding with the reassign sector, and at least one intermediate track disposed between the first and second partial tracks.

Abstract: A hard disk drive of the present invention includes a magnetic head having a high aspect ratio induction coil. The magnetic head includes a first pole tip piece that is formed upon a first magnetic pole and a second pole tip piece that is part of the second magnetic pole, where the write gap is formed between the first pole tip piece and the second pole tip piece. The use of the two pole tip pieces increases the spacing between the first magnetic pole layer and the second magnetic pole layer such that an induction coil having high aspect ratio coil turns can be formed within the insulation layers. A reactive ion etch (RIE) process is used to form the coil trenches within which the high aspect ratio coil turns are created. An RIE etch stop layer is formed upon the first magnetic pole layer to prevent the RIE etch process from creating coil turn trenches that make contact with the first magnetic pole layer.

Abstract: The present invention is a read/write head for writing information to magnetic media and reading information from magnetic media. It includes a write head element for writing information onto magnetic media, a read head element for reading information from the magnetic media, and an electromagnetic field shield element that is disposed between the write head element and the read head element. The shield functions to shield the read head from electromagnetic field energy created by the write head element. An enhanced second embodiment includes an electrical circuit element that is disposed proximate the read head element that functions to generate an electromagnetic field at the read head element that is generally oppositely directed to the electromagnetic field generated by the write head element to reduce the total electromagnetic field that the read head element is exposed to during a writing operation.

Abstract: To protect the MR read head element from ESD damage during wafer level manufacturing, a lead from the MR element is electrically connected to one or both of the read head element shields during manufacturing. In a preferred embodiment of the present invention, the electrical connection is fabricated in the kerf area between adjacent magnetic heads as they are fabricated upon a wafer substrate. Thereafter, when the magnetic heads are separated by saw cutting through the kerf areas, the electrical connections are thereby removed, such that the MR element electrical leads and the shields are electrically isolated. In an alternative embodiment, one or more of the shields, as well as the MR element leads can also be electrically connected to the substrate upon which the magnetic head is fabricated.

Abstract: A method is described for storing data on a target track of a recordable medium in a storage device via a magnetic write head therein. The storage device has an operating parameter having an operational range with extreme at which the writing of data to said device is prohibited. A first threshold within said range is defined and proximate said first extreme and delimits a first operational subrange. The method including the steps of: monitoring said operating parameter; and determining whether the monitored parameter lies within said first subrange and if so, performing a first predetermined operation to compensate for deleterious effects on data storage caused thereby.