148results about "Digital signal formatting" patented technology

According to an embodiment, tracks on a magnetic disk each include a long-distance sector having a length in the circumferential direction covering two or more servo sectors. A controller executes an acquisition operation to acquire one or more evaluation amounts on the basis of a track pitch in each of the two or more servo sectors included in a portion adjacent to the long-distance sector. The controller executes a protection operation to protect data of an adjacent track in a case where a total value of the one or more evaluation amounts exceeds a first threshold value.

Example channel circuits, data storage devices, and methods for data read synchronization from phase modulated synchronization fields are described. A data synchronization detector may receive an oversampled digital read signal read from a synchronization field that uses a single written pattern to encode the start of data position, phase, and gain for the read channel. The write pattern may use a phase modulated carrier signal to encode a pseudo-random binary sequence indicating the start of data position.

The present disclosure describes aspects of codeword interleaving over magnetic media surfaces. In some aspects, segments of a codeword are spread or interleaved across multiple surfaces of magnetic storage media. Data for one or more codewords may be received by a read / write channel and, for each codeword, a respective index is selected, received, or generated. The index may indicate which sector partitions of the multiple surfaces that segments of one of the codewords are to be written. The data of the codewords can be segmented and then arranged in an interleaver based on the respective index to which the codeword corresponds. The codeword segments are written from the interleaver to sectors of the multiple surfaces of the magnetic media. By so doing, codewords may be spread across multiple surfaces, such that a loss of a portion of a segment track does not prevent readback and decoding of the codewords.

Various illustrative aspects are directed to a data storage device, method, and one or more processing devices that are configured to: maintain respective measures of write commands associated with respective ones of shingled magnetic recording (SMR) zones defined in a data storage device, wherein data associated with the write commands is stored in a write cache associated with the data storage device; select one of the SMR zones based on the respective measures; perform a pre-heat operation of a laser diode included in a head associated with the selected one of the SMR zones; and perform a continuous write operation in the selected one of the SMR zones following the pre-heat operation, wherein the continuous write operation writes at least a portion of data stored in the write cache associated with the selected one of the SMR zones.

According to one embodiment, a magnetic disk device includes a disk, a write head, and a write processing unit. The write processing unit executes first write processing of writing data to a first segment of a first data sector in a first data track. The write processing unit then executes second write processing of writing data to a first segment of a second data sector in the first data track. The write processing unit then executes third write processing of writing data to a second segment of the first data sector in a second data track.

According to the embodiment, an HDC receives a plurality of data segments from a host, and executes generation and addition of a first code and output of a data segment to which the first code is added to each data segment. An HDC calculates exclusive OR with respect to the first codes, and outputs obtained first information. The RWC performs data conversion and calculation of exclusive OR on the plurality of data segments to which the first code is added, and outputs the plurality of data segments after the data conversion and a track parity obtained by the calculation of the exclusive OR. The RWC acquires the first code from the plurality of data segments. The RWC calculates exclusive OR with respect to a group of the second codes which are the acquired first codes to acquire second information. The RWC compares the first information with the second information.

An electronic device and method thereof for outputting audio data, the electronic device including: an audio module for outputting at least one of a piece of first audio data having a designated format or a piece of second audio data having a format different from the designated format; a memory configured to store instructions; and a processor configured to execute the instructions to: mix (hereinafter, first-mix) the at least one piece of second audio data, convert the first-mixed audio data into the designated format, mix (hereinafter, second-mix) the at least one piece of first audio data and the audio data converted into the designated format, post-process the second-mixed audio data; and transmit the post-processed audio data to the audio module to be output through the first sound output device.

The magnetic head comprises a recording module in which a plurality of recording elements are provided, and a reproducing module in which a plurality of reproducing elements are provided. The recording module and the reproducing module are disposed along a longitudinal direction of the magnetic tape. A pair of first servo reading elements of the recording module and a pair of second servo reading elements of the reproducing module are shifted from each other by a predetermined difference along one direction in the width direction of the magnetic tape. The predetermined difference is defined based on a pitch between a plurality of tracks formed using an SMR method and a length of the recording element in the width direction of the magnetic tape.

A system for recalling data from tape is disclosed. The system includes computer processing circuits and computer readable storage media having computer executable instructions. When executed, the instructions cause the computer-processing circuits to start, in response to a request to recall data from a tape, to read the tape at a read position. Additionally, the instructions cause the circuits to determine that the tape comprises a damaged region. Further, the instructions cause the circuits to determine a start position of the damaged region by skimming the tape. Additionally, the instructions cause the circuits to determine an end position of the damaged region by skimming the tape. Further, the instructions cause the circuits to read between the read position and the start position of the damaged region. Additionally, the instructions cause the circuits to read between the end position of the damaged region and an end of data indicator.

A shingled magnetic recording (SMR) hard disk drive (HDD) receives a read command for data associated with a range of logical block addresses (LBAs). In situations where a first portion of valid data associated with the range of LBAs is stored in an SMR region of the HDD and a second portion of valid data associated with the range of LBAs is stored in a non-SMR region of the HDD, the first portion is read from the SMR region in a single disk access and copied to a first buffer of the HDD, and the second portion is read from the non-SMR region in one or more disk accesses and copied to a second buffer of the HDD. The valid data associated with the range of LBAs stored in the second buffer are copied to the first buffer to be combined with valid data associated with the range of LBAs stored in the first buffer, and the combined valid data is then transferred to the host to complete execution of the read command.

This magnetic tape drive is used in a magnetic tape cartridge which is equipped with a magnetic tape and a storage medium. The storage medium stores geometric characteristic information. The magnetic tape records geometric characteristic information. The processor of the magnetic tape drive leaves second geometric characteristic information on the storage medium by deleting the first geometric characteristic information from the storage medium. The second geometric characteristic information is information for which it is possible to identify the recording position at which the geometric characteristic information is recorded on the magnetic tape. The first geometric characteristic information is information other than the second geometric characteristic information.

Controlling a shingled magnetic recording (SMR) hard drive involves attempting a sequential write to a first sector of a sequence of sectors and, responsive to encountering a write inhibit boundary corresponding to the first sector, continuing the write to the next available sector in the sequence of sectors for the write. Thus, instead of that write inhibit triggering a hard error, the data is adaptively written to the next down-track physical sector possible, i.e., “sliding” to the next sector. This does not require an additional disk revolution thus there is negligible performance penalty. The write may be continued to the next track if necessary, and may continue through the entire zone, to maintain all the data in sequential form for performance and large block protection purposes.

To provide a magnetic disk device capable of improving efficiency of data processing.SOLUTION: A magnetic disk device 1 includes a disk, a write head, and a write processing section. The write processing section executes: first write processing for writing data in a first segment of a first data sector in a first data track (ST1); second write processing for writing the data in a first segment of a second data sector in the first data track (ST2); and third write processing for writing the data in a second segment of a first data sector in a second data track (ST6).SELECTED DRAWING: Figure 12

The invention relates to the technical field of audio processing, in particular to a multi-source audio quality unified optimization method and system. According to the multi-source audio quality unified optimization method provided by the invention, unified optimization can be carried out on multi-source audios with relatively large parameter differences; the method comprises the following steps: firstly marking a plurality of audio segments needing to be optimized as audio segments to be optimized, then sequentially carrying out format optimization, sampling rate optimization and loudness optimization on the audio segments to be optimized, then splicing the optimized audio segments to obtain an audio segment to be played, and subsequently sending the audio segment to be played to a user for listening. And the hearing feeling of the optimized to-be-played audio is better, and the unified feeling of the audio is better, so that the user experience is improved.

The present technology relates to a data processing device, a data processing method, and a program that make it possible to easily perform synchronized generation of a plurality of files in which file streams of different data formats are stored. File data, which is obtained by encoding images and stored in each of a plurality of files, is generated from identical images. Between first file data stored in one file among a plurality of files and second file data stored in another file among the plurality of files, at least one of the codec, the chroma format, and the bit depth is different. The present technology can be applied to the generation of a plurality of files having identical image content.

A recording control device (10) configured to control recording of a data item in one or more recording sections (14, 24, 34, 44, 54), the recording control device comprising: a data acquiring section (17) configured to acquire the data item having a plurality of types; a data read-only storage section (S110, S140, S190, S670) configured to store, in the one or more recording sections, the one or more data items that match a recording condition prepared in advance of the acquired data item having the plurality of types; a condition changing section (S135, S185, S260) configured to to define the recording condition as an old recording condition, and to specify that the data storage section uses a new recording condition instead of the old recording condition when the new recording condition different from the old condition is received from the outside; a time transmission section (S630) configured to transmit reference time information to a partner device (20), the partner device corresponding to a communication counterpart of the recording control device, and returning a response data item obtained by applying information to be transmitted by the partner device to the reference time information when the reference time information indicating a time managed by the recording control device is received; and a time setting section (S650) configured to to obtain the response data element, and to set a generation time of the response data element based on the reference time information of the response data element, where: the data storage section causes the data item to be recorded in association with the generation time of the response data item.

The present invention provides a magnetic disk device that can efficiently record parity and has excellent error correction capabilities for user data on the disk. [Solution] The magnetic disk device comprises a disk DK, a write head WHD, a volatile buffer memory 80, a parity generation unit, a write processing unit 62, an error correction unit 64, a storage processing unit 65, and a normal correction limit prediction unit 66. The parity generation unit generates a first normal parity and a first strong parity based on first user data, and generates a second normal parity and a second strong parity based on second user data. The storage processing unit 65 overwrites the first recording area of ​​the buffer memory with the second strong parity if the first prediction information is normal information, and if the first prediction information changes to abnormal information, it leaves the first strong parity in the first recording area and stores the second strong parity in the second recording area of ​​the buffer memory.

To provide a technique for formatting recording media for recording image data.SOLUTION: An image recording device includes a control unit 11 that performs processing of recording image data showing an image photographed by a photographing device 14 in recording media 13, and format processing for setting the recording media 13 in a predetermined recording format. When a first operation button 151 is pressed for short time, the control unit 11 receives an input of a format instruction and executes the format processing on the recording media 13.SELECTED DRAWING: Figure 2

A high resolution tape directory (HRTD) stored in volatile memory of the tape drive is communicated for storage in off-tape non-volatile memory prior to ejection of the tape cartridge. In response to loading of the tape cartridge into the tape drive, the HRTD is received from the off-tape non-volatile memory.

Controlling a shingled magnetic recording (SMR) hard drive involves writing, to a first track of a zone pre-sized based on a nominal track width based on an expected mean track width across an entire zone, a portion of a write operation according to the nominal track width. Then, based on the positional accuracy of the first track writing, determining a second track position for an adjacent second track, and writing the second track another portion of the write operation according to the determined second track position. Thus, the determination and position of a given track is determined by the positional accuracy of a previously written track, considering for example the position error signal corresponding to the writing of the previously written track. Thus, the track pitch is effectively defined by the average positional error across a zone rather than by a worst-case scenario positional error across the zone.

To make it possible to prevent an unnatural change in luminance during random access.SOLUTION: An information processing apparatus according to one aspect of the present technology is configured to generate dynamic metadata including information regarding luminance of a picture, and encode HDR video data such that the dynamic metadata is added to each picture serving as a random access point. For example, the dynamic metadata can be allowed to be added to a first picture of a GOP, the first picture serving as the random access point during fast-forward playback / rewind playback or cueing playback. The present technology can be applied to Blu-ray (R) Disc players.SELECTED DRAWING: Figure 9

Disclosed are storage devices and methods relating to reading staggered bits recording patterns in which the data bits on adjacent tracks recorded on magnetic media are staggered in such a way that a single reader detects a combined signal from data bits on multiple tracks at selected signal sampling locations. A signal shaping algorithm is used to deconvolve the combine signals, thus isolating each of the tracks from one another so that single track bit sequences can be decoded. In this way, staggered bits patterns can use intertrack interference effects for advantage, allowing readers to read multiple bit tracks simultaneously and without ambiguity.

To prevent an unnatural change in luminance during random access.SOLUTION: An information processing apparatus of one side of the present technique generates dynamic metadata including luminance information of pictures, and performs encoding of data of HDR video so as to add the dynamic metadata to each of the pictures to be random access points. For example, the dynamic metadata can be added to the head of a GOP to be a random access point during fast forward playback / rewind playback, and cueing playback. The present technique can be applied to a Blu-ray (registered trademark) disc player.SELECTED DRAWING: Figure 9

This application relates to the field of optical storage technology and discloses a system and method for reading and writing data. The method can be used to increase the read / write speed of optical storage without increasing the rotation speed of the optical storage medium. The system includes an optical deflector and a read / write optical head. The optical deflector is configured to sequentially deflect a first optical signal through multiple angles to obtain multiple second optical signals. The read / write optical head is configured to receive the multiple second optical signals and separately focus the multiple second optical signals onto the optical storage medium to read and write multiple data points.

A method according to one embodiment includes acquiring a result of quality inspection related to recording quality of first sectors included in a first storage area of a magnetic disk. The method includes calculating a first number being the number of sectors corresponding to a capacity obtained by subtracting a set capacity from an actual capacity of the first storage area. The first number is calculated based on the set capacity of the first storage area and a set value of recording density of the first storage area. The method includes selecting a second number of sectors from the first sectors based on the result of quality inspection. The method includes assigning addresses to a group of sectors that are not included in the second number of sectors among the first sectors. The group of sectors consists of sectors with the number corresponding to the set capacity.

According to one embodiment, a disk device including a head, a disk, and a controller is provided. The disk includes at least one band. When a target track is written while being partially overlapped with a track adjacent to the target track in each of the at least one band, the controller writes a plurality of tracks in the band such that a track pitch on the head side of the band is larger than the other track pitches in at least a part of a circumferential position range.

A magnetic tape drive is used for a magnetic tape cartridge including a magnetic tape and a storage medium. Geometrical characteristic information is stored in the storage medium. The geometrical characteristic information is recorded on the magnetic tape. A processor of a magnetic tape drive erases first geometrical characteristic information from the storage medium to leave second geometrical characteristic information in the storage medium. The second geometrical characteristic information is geometrical characteristic information capable of specifying a recording position in the magnetic tape at which the geometrical characteristic information is recorded. The first geometrical characteristic information is geometrical characteristic information other than the second geometrical characteristic information.