摘要:
A servo head capable of verifying at least one timing based pattern printed on media is provided. The servo head includes a magnetic structure having at least one magnetic element arranged and configured to form at least one magnetic gap parallel to the timing based pattern. In one embodiment, the magnetic element is arranged and configured to have a plurality of magnetic gaps being parallel to each other but not co-linear to each other. In the second embodiment, the magnetic element is arranged and configured to have a magnetic gap being parallel to and co-linear to the timing based pattern.
摘要:
Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.
摘要:
A servo head capable of verifying at least one timing based pattern printed on media is provided. The servo head includes a magnetic structure having at least one magnetic element arranged and configured to form at least one magnetic gap parallel to the timing based pattern. In one embodiment, the magnetic element is arranged and configured to have a plurality of magnetic gaps being parallel to each other but not co-linear to each other. In the second embodiment, the magnetic element is arranged and configured to have a magnetic gap being parallel to and co-linear to the timing based pattern.
摘要:
Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.
摘要:
A magnetic recording head assembly, and method, for connecting a magnetic head within a magnetic tape device such as a tape formatting device. In one example, the assembly includes a mounting device for attachment to the magnetic tape device, and a sub-mount for attaching the magnetic head to the mounting device, the sub-mount having a first end connected with the magnetic head and a second end removably connected with the mounting device. By attaching the head to one end of the sub-mount, the head/sub-mount combination can be removably attached to the mounting device which is (or will be) attached to the magnetic tape device. The sub-mount and mounting device provide an improved level of flexibility for connecting heads to various different magnetic tape devices. Various embodiments of the invention are disclosed.
摘要:
Methods and systems for data recording and reading for increasing overall tape data storage density, especially for data written in azimuth style. The principles of the invention provide servo formats and systems that allow accurate on track guidance for higher density applications and that are less sensitive to off track error. Preferred embodiments of the invention offer servo formats and systems of the invention that allows positive track and group identification at the beginning, end, and optionally periodically along the length of a tape.
摘要:
An optical path or waveguide for a laser-assisted transducing head is disclosed. The optical path extends between the poles of the transducing head to near the write gap. A solid-state laser is attached to or incorporated into the slider or head and is positioned to direct thermal energy through a waveguide and onto a track of a read/write surface to lower the coercivity of the recording medium to facilitate the write process.
摘要:
A thin film magnetic recording head is provided with a tape bearing surface that has magnetically isolated channels while still providing a maximum continuous surface area with which to engage the media. This can be accomplished by providing spaces in the magnetically permeable thin film that are large enough to prevent cross-talk between the channels, but small enough to prevent significant interference with the moving media. Alternatively, magnetically impermeable thin film spacers can be provided to magnetically isolate each of the channels. The spacers are generally even with the magnetically permeable thin film so as to provide a continuous media-bearing surface.
摘要:
An arbitrary gap thin film magnetic recording head is fabricated by forming a substrate based on traditional vertical planar thin film head wafer technology which is designed to produce an integrated subgap and subpole substrate structure. The wafer is then processed into row bars to reveal, in a plane parallel to the transducing direction of the medium, the subgap and subpoles at the surface of the row bar and to bring the structure to a certain coil depth or gap depth. A flat or cylindrical contour may be utilized. This thin film subgap row bar is taken through a film deposition or growth process that deposits the magnetic film on a plane perpendicular to the wafer plane, horizontal planar processing, forming a surface film recording head where an arbitrary gap structure can be made in-between the subpoles and generally directly on top of the subgap. The surface thin film is deposited and patterned on the tape bearing surface of the head to optimize various element configurations, gap patterns and head-to-tape medium contact. An arbitrary gap thin film magnetic recording head is manufactured using two major thin film processing planes, one orthogonal to the other, the first major plane is wafer level and the second major plane is sub-wafer level and perpendicular to the first. The first major plane of processing defines the magnetically active substrate including coils, subgap and subpole members. The second major plane of processing defines the surface film which transmits the flux from the subpoles to the gap features contained in the surface film. This resulting structure is a recording head that is wired to the servo system electronics and will format the tape with the arbitrary gap pattern.
摘要:
A thin film magnetic recording head utilizing a timing based servo pattern is fabricated using a focused ion beam (FIB). The recording head is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing based pattern, is defined on the thin film and the FIB cuts a gap through the thin film based on that pattern. Once completed, the recording head is used to write a servo track onto magnetic tape. The timing based servo track then allows for the precise alignment of data read heads based on the positional information obtained by a servo read head which scans the continuously variable servo track.