| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 360060000 | Recording-or erasing-prevention | 20 |
| 20080204918 | Electro-Mechanical System For Non-Duplication of Audio Files - A system consisting of a memory storage unit in which the licensed audio files are stored. The function of this device is to recognize the requested data and thereby allow the audio file contents from the memory storage unit according to the instructions set to this device. It is an effective means for protecting the audio files in the device from duplication. | 08-28-2008 |
| 20080316634 | MAGNETIC TAPE WRITE ONCE OVERWRITE PROTECTION - A magnetic tape cartridge, a recording system, and a magnetic tape drive are configured to, for example, guard against tampering with a write once overwrite protection pointer which allows a rewritable magnetic tape to be treated as write once. In one embodiment, the magnetic tape cartridge comprises a magnetic tape and a cartridge memory. The magnetic tape is configured to provide at least one overwrite protection pointer, the overwrite protection pointer identifying data to be protected from being overwritten; and the cartridge memory is configured to provide the at least one overwrite protection pointer, the overwrite protection pointer identifying magnetic tape data to be protected from being overwritten. | 12-25-2008 |
| 20090080102 | MEDIA PLAYER WITH ACCELERATION PROTECTION - An improved media player and a method for operating a portable computing device (e.g., media player) are disclosed. According to one aspect, a portable computing device is able to protect its disk drive when being subjected to undesired levels of acceleration. The portable computing device protects its disk drive by monitoring for such accelerations and operating to avoid usage of the disk drive during periods of acceleration. Through such protection, the likelihood of damage to the disk drive or loss of data stored on the disk drive is able to be substantially reduced. According to another aspect, a user of a portable computing device can be alerted when the portable computing device is being subjected to undesirable levels of acceleration. | 03-26-2009 |
| 20090128945 | DATA PROTECTION BASED ON SYSTEM VIBRATION MODES - An aspect of the present disclosure relates to implementing a data protection mode based on system vibration modes in a data supported system. An exemplary system vibration mode is associated with an operating mode of the data supported system. The data protection mode operates to limit, or prevent, errors caused by the vibration. In one exemplary embodiment, a method is provided for operating a data supported system. The method includes receiving an indication that a vibration associated with an operating mode of the system will occur and, in response, implementing a data protection mode in the system. | 05-21-2009 |
| 20100208380 | ENCRYPT-ONLY DATA STORAGE CARTRIDGE - Control of the encryption of data for storage with respect to removable data storage cartridges having a recording media and having cartridge memory with at least a portion lockable to read-only, employs the steps of inspecting the read-only portion of the cartridge memory of the removable data storage cartridge for an “Encrypt-Only” flag. If the “Encrypt-Only” flag is present, writes to the recording media of the removable data storage cartridge are limited to data in an encrypted format, if any; and, else, writes to the recording media of the removable data storage cartridge are allowed for data in any of encrypted and unencrypted formats. | 08-19-2010 |
| 20100321817 | MAGNETIC DISK DRIVE AND DATA REWRITE METHODS - In one embodiment, a magnetic disk drive includes a magnetic disk having data tracks, a magnetic head, a motion mechanism for moving the magnetic head, and a controller. The controller adds a value to a rewrite parameter for a rewrite region based on a number of writes to data tracks related to the rewrite region, the value is chosen to reflect a degree of influence the number of writes have on the rewrite region, and the magnetic head rewrites data of the rewrite region when the rewrite parameter is greater than a threshold. In another embodiment, a method includes writing data tracks in a rewrite region, defining values reflecting a degree(s) of influence on the rewrite region, adding the values to a rewrite parameter upon writing data to the data tracks, determining that the rewrite parameter has reached or exceeded a threshold and rewriting data in the rewrite region. | 12-23-2010 |
| 20110051278 | DATA STORAGE DRIVE OVERWRITE PROTECTION OF NON-WORM CARTRIDGES - Protection against data overwrite of a rewritable non-WORM data storage cartridge is provided by a data storage drive operating cartridge data overwrite protection procedures independent of, or not withstanding, the absence of cartridge controls relating to data overwrite protection. Also for the non-WORM cartridge, the drive responds to an allow data overwrite command to allow an immediately subsequent write type command to write to the cartridge even if the write command overwrites existing data. The overwrite protection procedures and data overwrite procedures may be configured and enabled for the data storage drive. | 03-03-2011 |
| 20110128645 | APPARATUS AND METHOD FOR WRITING DATA TO TAPE MEDIUM - In a controller of a tape drive, a command processing unit receives a request to write new data, an offset determination unit determines whether old data is not partially overwritten with new data, and if old data is not partially overwritten with new data, a head position management unit makes a write head offset toward the unoverwritten portion. Then, a channel input/output unit reads pattern data that disables old data from a pattern storage unit and outputs the data to the write head to thereby overwrite the old data with the pattern data. After that, a tape transport management unit rewinds a tape and the head position management unit returns the write head to the original position to overwrite the old data with the new data as usual. | 06-02-2011 |
| 20110267716 | CONTROL OF LOGICAL WRITE PROTECTION OF REWRITABLE DATA STORAGE CARTRIDGE - Write protection for data of a rewritable data storage cartridge having partitions is provided in certain circumstances by providing logical write protection; and in response to detection of an application issuing at least one partition-based command with respect to the rewritable data storage cartridge, the logical write protection is disabled with respect to the detected application. Thus, where the cartridge has a non-default index addressing location, in response to detection of an application issuing at least one command initially addressing a location other than the non-default index location, logical write protection is enabled with respect to the detected application; and if the non-default index location is addressed, the logical write protection is disabled. | 11-03-2011 |
| 20110292538 | RECORDING MEDIUM CONTROLLER AND METHOD THEREOF - According to one embodiment, a recording medium controller includes a recording medium, an input module, a reading module, and a writing module. The recording medium includes a write area and an escape area. The write area includes track groups. Each of the track groups is a unit for writing data and includes tracks. The input module receives a write command for data. The reading module reads data stored in the escape area and data from a first track group of the track groups. The writing module writes data received for the write command to the escape area, and writes merged data obtained by merging the data read from the escape area and the data read from the first track group to each track of a second track group of the track groups by using a shingle recording technique in which adjacent tracks are partly overlapped with each other. | 12-01-2011 |
| 20120014013 | DISK DRIVE WITH VARIABLE INCREMENTED COUNTING OF WRITES TO THE DATA TRACKS FOR MINIMIZING THE EFFECT OF FAR TRACK ERASURE - A hard disk drive (HDD) minimizes the effects of far track erasure (FTE) by counting the number of writes to the data tracks and incrementing counters based on the known effect of FTE on each track. The extent of the FTE effect is determined for each track within a range of tracks of the track being written, and based on the relative FTE effect for all the tracks in the range a count increment (CI) is determined for each track within the range. A counter is maintained for each track. For every writing to a track, a count for each track within a range of the track being written is increased by the CI value associated with the track number within the range. When the count value for a track reaches a predetermined threshold the data is read from that track and rewritten, preferably to the same track. | 01-19-2012 |
| 20130176641 | TAPE STORAGE DEVICE - A method, and tape storage device configured to perform such method, according to various embodiments, includes writing data stored in a buffer onto a tape; writing an interval marker on the tape after the data stored in the buffer is written onto the tape; writing next data subsequent to the interval marker when the next data is stored in the buffer in a first round corresponding to a first-time write in a single track in the tape; writing data stored in the buffer in an area of the interval marker in a second round corresponding to a second-time write in the single track; and writing data stored in the buffer in an area of the interval marker in which no data is written in each of third and subsequent rounds corresponding to third- and subsequent-time writes in the single track. | 07-11-2013 |
| 20130265669 | Magnetic Tape Partitioning Format For Use in Linear Recording of Fixed Partitions - A partitioning format for magnetic tape media that includes at least a first portion (e.g., a file directory) having a plurality of dynamically updateable (e.g., non-shingled) partitions and a second portion (e.g., a data portion) having a plurality of linearly or sequentially written shingled partitions. Use of both shingled and non-shingled partitions on the same length of magnetic tape allows for an increase in capacity over those applications that perform linear recording of non-shingled partitions while allowing for the dynamic updating of a local file directory free of disturbing the linearly written data of the shingled partitions. | 10-10-2013 |
| 20140002922 | Failure-Resistant Multi-LUN Hard Disk Drive | 01-02-2014 |
| 20140022663 | MONITORING OF RESIDUAL ENCRYPTED DATA TO IMPROVE ERASE PERFORMANCE ON A MAGNETIC MEDIUM - In one embodiment, a system includes a processor, logic in the processor and/or memory configured to determine a physical position on a magnetic medium that corresponds to an end of encrypted data written over residual unencrypted data, and logic configured to store an indicator of the physical position on at least one of the magnetic medium and a memory coupled thereto. In another embodiment, a method includes determining a physical position on a magnetic medium that corresponds to an end of encrypted data written over residual unencrypted data, storing an indicator of the physical position on at least one of the magnetic medium and a memory coupled thereto. | 01-23-2014 |
| 20140063635 | VARIABLE STOPWRITE THRESHOLD USING KURTOSIS - A data storage system according to one embodiment includes a head; a drive mechanism for passing a medium over the head; and a controller electrically coupled to the head. The system calculates a kurtosis value, using the current position error signal sample or derivative thereof, and adjusts a threshold value using the kurtosis value. The standard deviation or variance is compared to the threshold value, and writing is enabled when the standard deviation or variance does not exceed the threshold value. | 03-06-2014 |
| 20150092293 | VARIABLE STOPWRITE THRESHOLD WITH VARIABLE SMOOTHING FACTOR - In one embodiment, a method includes determining a stopwrite threshold based on a standard deviation or a variance at a current position error signal sample, and determining whether the current position error signal sample exceeds the stopwrite threshold. Writing is disabled in response to determining that the current position error signal sample exceeds the stopwrite threshold. Writing is enabled in response to determining that the current position error signal sample does not exceed the stopwrite threshold. | 04-02-2015 |
| 20160042760 | METHOD OF DETECTING TAMPERING OF DATA IN TAPE DRIVE, AND FILE SYSTEM - A method of detecting whether data in a tape drive used in a file system is tampered is described according to one embodiment. The method includes: (a) preparing a first tape cartridge including a tape on which multiple files and archival records of index information are stored in a WORM partition, and index information is stored in the R/W partition; (b) reading and comparing the index information of the R/W partition and the last index information of the WORM partition; and (c) when these two pieces of index information do not match, determining that the index information of the R/W partition is tampered when these two pieces of index information do not match. | 02-11-2016 |
| 20160093317 | MAGNETIC TAPE REWIND OVERWRITE DATA PROTECTION - A computer-implemented method for preventing overwriting of data, e.g., on a magnetic medium, includes receiving a write command to write to a magnetic tape. The current location of the magnetic tape is determined. A determination is also made as to whether data corresponding to the write command is at least one of: a size and type specified for a block at the current location. Execution of the write command is disallowed in response to determining that the data corresponding to the write command is not of the specified size and/or type. | 03-31-2016 |
| 20160379678 | SYSTEM AND METHOD FOR WRITE PROTECTING PORTIONS OF TAPE STORAGE MEDIA - A non-transitory computer readable storage medium includes a tape having a plurality of partitions configured for storing data, and a plurality of read-only partition identifiers, each read-only partition identifier associated with one of the plurality of partitions and readable by a tape drive having a processor and memory for writing and reading tape data. Each read-only partition identifier selectively designates a corresponding one of the partitions as read-only to prevent data from being written to the designated read-only partition by the tape drive. | 12-29-2016 |
