| Patent Number |
Title Of Patent |
Date Issued |
| 5949597 |
Method and apparatus for data pulse qualification wherein the amplitude of a preceding pulse of |
September 7, 1999 |
| In a method and apparatus for qualifying peaks in a signal as representing data bits, the signal containing data bits superimposed with background signals, a peak is qualified as representing a data bit when a first derivative of the peak exceeds a threshold value simultaneously with the |
| 5781383 |
Magnetic head for stable tip to tape contact pressure despite head wear and tape tension variati |
July 14, 1998 |
| An improved magnetic head is disclosed for stable pole tip to tape contact pressure despite head wear and tape tension variations. A magnetic head which contacts the magnetic tape comprises a ferromagnetic body. A recess is provided in this ferromagnetic body. A ferromagnetic core has po |
| 5696537 |
Mouse for data entry and control with control of ball friction force |
December 9, 1997 |
| A mouse system is disclosed for data entry and control and wherein a rolling force of the ball is made adjustable to suit an operator's preference. A friction pad or a magnetic force may be applied to the ball to change and adjust the ball rolling force. Alternatively, a free roller |
| 5659945 |
Method of assembling a small distance read/write head with inherently low mistracking |
August 26, 1997 |
| A magnetic head assembly, for use in a tape drive wherein a tape is moved past the head assembly in a longitudinal direction and the tape exhibits transverse tape movement cross-correlated by obtaining repeated measurements at the same longitudinal position of the tape, and wherein a |
| 5629816 |
Tape cartridge gripper mechanism |
May 13, 1997 |
| The invention pertains to developments for manipulating and referencing a magnetic tape cassette in a magnetic tape device involving loading, read/write and tape drive operation, and unloading. To load and unload the tape cassette, a tape drive bridge on which the magnetic head is mounte |
| 5621436 |
Keyboard with integrated mouse for data entry and control |
April 15, 1997 |
| A computer keyboard mouse system wherein a mouse assembly is integrated into a front or side wall of a keyboard of the computer. A control ball of the mouse assembly protrudes from the front or side wall for control by the operator. To protect against forces directed against the ball of |
| 5596762 |
Small-size computer having pluggable memory unit for data protection |
January 21, 1997 |
| In a small size computer, and particularly a portable personal computer, a streaming mode tape recorder is coupled via a plug connector for data protection or backup. A plug connector via which the tape recorder is connected includes line connections for data signal lines and control |
| 5583541 |
Mouse and trackball design with contact-less roller sensor |
December 10, 1996 |
| A mouse or track ball has a roller ball mounted within a housing by three free rollers in contact with an outer peripheral surface of the roller ball. An inner core of the roller ball is provided of a magnetic material having either bumps or holes at an outer periphery thereof. The inner |
| 5548480 |
Tape drive with floating support for insert |
August 20, 1996 |
| A rectangular cylindrical suspension for a data storage drive unit such as a tape drive, the suspension secured into a computer housing, providing resilient leaf springs on a bottom wall and protrusions on a top wall for clasping the data storage drive unit within the cylinder spaced fro |
| 5475548 |
Electrostatic discharge protection for a magnetic tape cartridge |
December 12, 1995 |
| A magnetic tape drive for magnetic tape housed within a cartridge is provided which includes a rectangular access through which the cartridge is inserted into the drive and a wiping member operatively positioned at an edge of the access such that the cartridge is contacted during ins |
| 5430587 |
Cassette-activated mechanism for inwardly opening recorder door |
July 4, 1995 |
| A hinged door is provided for covering the slot opening in a magnetic recorder housing through which tape cassettes are loaded and unloaded. The door rotates inwardly of the recorder housing when opened. A specially configured fulcrum device is disposed within the recorder housing and |
| 5414578 |
Voice coil servo motor for adjusting magnetic head |
May 9, 1995 |
| A head positioning assembly having a magnet housing and fixed suspension vertically positionable by a worm gear/screw shaft arrangement and further positionable for fine tuning by a magnet mounted within the magnet housing and an electrical coil surrounding the magnet and attached to a h |
| 5371640 |
Data carrier load/replace belt system for a data carrier loader |
December 6, 1994 |
| A belt system is disclosed for transferring a data carrier between a magazine and a data reader for use in a data carrier loader of the type wherein the data reader is moved, within the loader housing, over the stationary magazine in the housing to transfer a data carrier therebetwee |
| 5337297 |
Magazine drawer manipulation system for a data carrier loader |
August 9, 1994 |
| A loader data carriers, such as magnetic tape cartridges, of the type having a housing with a data reader therein which is movable over a magazine containing a number of data carriers, so as to be positionable above a selected data carrier for transfer between the magazine and the da |
