Some examples include a computing device that receives media content to distribute to a plurality of electronic devices. The computing device may receive an indication of first data to relate to the media content for distribution to the plurality of electronic devices. A portion of the multimedia content may be decoded to enable a determination that the media content already has second data embedded in the media content. A psychoacoustic mask may be extracted from the media content and subtracted from the received media content to remove the embedded second data. The first data may be associated with the media content by either embedding third data in the media content, or by embedding the first data in the media content.

A configuration is realized in which a packet delimiter can be discriminated from an MMTP packet string including MMT format data, and a packet can be selectively acquired and reproduced. The MMT format data is input through a broadcast wave or the like, a packet length of an MMT protocol (MMTP) packet including the MMT format data is acquired, and recording data in which an additional header storing the acquired packet length is set before the MMTP packet, is generated, and is recorded in an information recording medium. A reproducing device is capable of discriminating a delimiter of each MMTP packet, according to the packet length of the MMTP packet, read from the additional header, is capable of acquiring reproducing data, for example, image data, from the selected packet, and is capable of decoding and reproducing the acquired data.

A servo writer includes a writing head that writes a servo signal on a long magnetic tape that is traveling, a guide roller that is provided on an upstream side of a travel path with respect to the writing head and guides the traveling magnetic tape, and a polishing unit that is provided on an upstream side of the travel path with respect to the guide roller and polishes at least one edge of the traveling magnetic tape, in which the guide roller includes a flange that regulates the travel of the magnetic tape.

A recording and reproducing device includes: a reading unit that reads production information from a recording medium of a magnetic tape cartridge, the magnetic tape cartridge including a magnetic tape, and the recording medium other than the magnetic tape and on which the production information is recorded, the production information being information regarding the magnetic tape obtained in a production process of the magnetic tape cartridge; and a control unit that performs, as an initialization process of the magnetic tape cartridge, control of recording the production information on the magnetic tape and invalidating the production information in the recording medium.

[Object] A cartridge memory according to an embodiment of the present technology is a cartridge memory for a recording medium cartridge, including: a memory unit; and a capacity setting unit. The memory unit has a memory capacity capable of storing management information relating to a second information recording medium configured to be capable of recording information with a second data track number larger than a first data track number. The capacity setting unit is configured to be capable of setting a data storage area limited to a first capacity capable of storing management information relating to a first information recording medium configured to be capable of recording information with the first data track number.

According to one embodiment, a magnetic disk device includes a disk, a head which writes data to the disk and reads data from the disk, and a controller which increases a first recording density of data to be written to a first sector having a first overwrite in the first sector and reduces a second recording density of data to be written to a second sector having a second overwrite different from the first overwrite, on a first track of the disk.

A method for operating a storage controller to write to a group of multi-actuator disk drives includes receiving a data stream, performing RAID mapping to a preselected RAID level, organizing the data stream into at least one data stream, creating at least one parity data stream, organizing each data stream and parity data stream into blocks of data, dividing each data stream and each parity data stream into groups of blocks of data assigned to a logical unit representing a drive and an actuator, blocks of data from a data stream and parity stream assigned to a different drive, sequential groups of blocks of data assigned substantially equally to logical units representing actuators in each drive, providing each group of blocks of data to a target port associated with the drive to which it has been assigned, and sending each group of blocks of data from the target port.

The present disclosure describes aspects of constant-density writing for magnetic storage media. In some aspects, a constant-density writer delays transitions between bits within write data to enable constant-density writing. The write data has an initial bit period based on a constant clock signal, which is generated based on the rotation of a media disk. The constant-density writer modifies the write data to generate phase-delayed write data, which has a bit period that is greater than or equal to the initial bit period. To realize this bit period, the constant-density writer changes write phases of bit transitions within the write data. The constant-density writer can also insert stretch bits, filter single-bit transitions, and mitigate glitches within the phase-delayed write data.

A tape drive may arrange timing-based-servo marks into a timing-based-servo pattern. The timing-based-servo pattern may be at least one M-pattern. The tape drive may select the at least one M-pattern. The tape drive may match at least two timing-based-servo marks in the at least one M-pattern. The tape drive may determine, from the matching, whether an alignment of the at least two timing-based-servo marks is demonstrative of tape-creep.

A method for storing data in groups of logical data sectors across a plurality of contiguous data tracks of a data storage medium includes defining a plurality of interleaver patterns, each interleaver pattern including a sector interleaving pattern specifying a respective order in which segments of respective ones of the logical data sectors are spread across physical data sectors of a respective one of the contiguous data tracks. For each respective group of logical data sectors, a respective interleaver pattern is selected. Data is written from each group of logical data sectors to one of the data tracks using the selected interleaver pattern. Each respective group of logical data sectors is written to its respective data track using a different interleaver pattern from any other group of logical data sectors written to an adjacent data track, so that no two adjacent data tracks are written using the same interleaver pattern.