| Patent application number | Description | Published |
|---|
| 20090185309 | Method for Minimizing Contaminant Levels Within a Tape Drive System - A method for minimizing dust level within a tape drive system is disclosed. A dust concentration level within the tape drive system is initially determined. A head brush interval is subsequently adjusted according to the determined dust concentration level within the tape drive system. | 07-23-2009 |
| 20090185310 | Method for Providing Contaminant Prevention and Removal from a Tape Drive System - A method for preventing dust from entering a tape drive system is disclosed. Initially, a cooling fan is allowed to rotate in one direction to provide airflow to the tape drive system. In response to a detection of a loading or unloading of a tape cartridge or a head brush operation, the cooling fan is allowed to rotate in a different direction to provide airflow in an opposite direction in order to blow any dust and debris, which may be introduced from a tape cartridge or may already be resident on a tape head, out the front of the tape drive system. | 07-23-2009 |
| 20090213489 | METHOD AND SYSTEM FOR SERVO STRIPE WIDTH DETECTION AND COMPENSATION - A method and system for servo stripe width detection and compensation including moving a magnetic tape in a first direction across a magnetic tape head, the magnetic tape having a servo band including a first servo pattern and a second servo pattern, the magnetic tape head having a servo element; detecting a leading edge and a trailing edge of the first servo pattern with the servo element; detecting a leading edge and a trailing edge of the second servo pattern with the servo element; determining a first time from the leading edge of the first servo pattern to the leading edge of the second servo pattern; determining a second time from the trailing edge of the first servo pattern to the trailing edge of the second servo pattern; and determining a correction value from a difference between the first time and the second time. | 08-27-2009 |
| 20100177885 | METHODS TO FACILITATE ENCRYPTION IN DATA STORAGE DEVICES - Methods are provided for managing data encryption for a data storage library. An implementation assessment is performed for a customer and, in response to the implementation assessment, a set of customizations are generated for an encryption command communications appliance to enable the appliance to communicate with an encryption-capable storage device and a data storage library controller within the data storage library and with an encryption key manager (EKM) coupled to the data storage library. The encryption command communications appliance is configured with the set of customizations and the configured encryption command communications appliance is installed in the data storage library coupled to the library controller, the storage device and the EKM. | 07-15-2010 |
| 20100177901 | SYSTEM AND SERVICE TO FACILITATE ENCRYPTION IN DATA STORAGE DEVICES - An encryption communications appliance provides data encryption management for a data storage library. The appliance is coupled to an encryption-capable storage device, a data storage library controller within the data storage library and with an encryption key manager (EKM). The encryption command communications appliance intercepts encryption key requests from the data storage device and transparently forwards the requests to the EKM. The appliance also forwards transparently communications between the library controller and the data storage device. | 07-15-2010 |
| 20100302666 | DETECTING A PERIODIC SEQUENCE OF SERVO SIGNALS - A system and method are disclosed for detecting a periodic sequence. A value detector module detects a plurality of values of a periodic sequence. In one embodiment, a transformation module transforms the plurality of values into transformed values. A confinement module confines the values to a limited set of confined values. A correlation module correlates the confined values with a plurality of instances of the periodic sequence. In addition, a selection module selects an instance of the periodic sequence with the highest correlation to the confined values as an observed periodic sequence. | 12-02-2010 |
| 20110102934 | CANCELLATION OF TIME-VARYING PERIODIC DISTURBANCES IN SERVO CONTROL SYSTEMS - Various embodiments for addressing time-varying periodic disturbances in a servo control system are provided. Each of a plurality of coefficients is updated based on an estimation of at least one disturbance frequency. The updated plurality of coefficients is provided to at least one peak filter modifying an input signal of the servo control system. The peak filter is operable in view of the updated plurality of coefficients to cancel at least one of the time-varying periodic disturbances. | 05-05-2011 |
| 20110134556 | Detection and Acquisition of a Servo Pattern Subject to Lateral Motion - A method, a servo system and a tape drive are provided to acquire lock on a servo signal. The servo signals of at least one servo element are monitored to detect a valid servo signal. If a valid servo signal is not detected than the fine actuator is moved in a first direction until either a valid servo signal is detected or the fine actuator travel limit is reached. When a valid servo signal is detected, the fine actuator is set to a neutral position and the coarse actuator is moved in the first direction. When the fine actuator travel limit is reached the fine actuator is moved to the first position and the coarse actuator is moved in a second direction, opposite of the first direction. | 06-09-2011 |
