58results about "Digital signal formatting" patented technology

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.

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.

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.

Maintains good write characteristics in a heat-assisted magnetic recording and playback device. [Solution] According to the embodiment, the adjustment method for a heat-assisted magnetic recording and playback device is an adjustment method for a heat-assisted magnetic recording and playback device equipped with a heat-assisted magnetic recording head and a heat-assisted magnetic recording medium, wherein the bit density in the starting area of ​​the recording band and in each area storing information other than user data is changed to be lower than the bit density of the areas other than the starting area in order to improve the write characteristics.

According to one embodiment, during a first write period, an adjustment unit derives a first predicted excess amount and a predicted upper limit threshold value, and a correction limit prediction unit calculates a first cumulative predicted excess amount. The determination unit causes the write processing unit to continue the write processing if determining that the first cumulative predicted excess amount is smaller than or equal to the predicted upper limit threshold value, and causes the write processing unit to suspend the write processing if determining that the first cumulative predicted excess amount exceeds the predicted upper limit threshold value.

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 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.

To provide a method, a system, and a storage medium for generating a bitstream that represents an object based audio program.SOLUTION: A bitstream comprises a sequence of containers. A first container in the container sequence includes a plurality of substream entities for a plurality of substreams of an object based audio program, and a presentation section. A method 600 includes the steps of: 601 determining a set of object channels; 602 providing a set of object related metadata for the set of object channels; 603 inserting a first set of object channel frames and a first set of object related metadata frames into a respective set of substream entities of the first container; and 604 inserting presentation data into the presentation section.SELECTED DRAWING: Figure 6

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.

According to an embodiment, a processing circuit of a magnetic disk device modulates a recording width in the radial direction of a first data sequence depending on a first combination and a second combination when writing data to a first track. The first track is adjacent to a second track in which data is already written. The first combination is a combination of the first data sequence that is data written to the first track and a second data sequence that is data already written to the second track. The second combination is a combination of polarities at the bit position of the first track and the bit position of the second track adjacent to each other in the radial direction.

The objective is to provide a control device, a storage system, a control method, and a program that can suppress the occurrence of a large amount of unused storage space in volatile memory. [Solution] The control device of the embodiment is a control device for controlling volatile memory. When an error occurs in reading data stored in the storage area of ​​the volatile memory, and the circumstances of the error in the storage area where the error occurred satisfy a predetermined first occurrence condition, the control device of the embodiment makes the storage area where the error occurred a read cache area for storing read data read from a predetermined storage unit.

Disclosed are hard disk drives (HDDs), and methods for use therewith, that utilize reduced overhead servo fields, thereby simplifying the servo system. Reduced overhead servo fields may be of particular use in HDDs that utilize multi-revolution storage techniques to store data at much higher densities than what is possible for conventional HDDs. The relaxed performance requirements of high-density, multi-revolution drives provides opportunities for reducing servo overhead, thereby potentially further increasing the areal density capability of the magnetic media. Servo overhead may also be reduced by placing certain servo data on flash or other memory off of the media disk rather than in the servo fields written to the media disk.

The invention provides a magnetic disk device and a control method thereof capable of suppressing fluctuation of a floating amount of a magnetic head. According to the present embodiment, a magnetic disk device controls the driving of a first actuator in order to seek a magnetic head to a target position on a magnetic disk, and controls the driving of a second actuator in order to finely adjust the position of the magnetic head at the target position on the magnetic disk. The drive voltage for the second actuator is changed in stages each time at a predetermined voltage limit value. While superimposing a high-frequency signal on a drive voltage for a second actuator output from a second control unit, a fluctuation in the amount of floating of the magnetic head is detected, and the voltage limit value is set on the basis of the detection result.

To provide a magnetic disk device and a write processing method capable of improving reliability.SOLUTION: A magnetic disk device according to the present embodiment includes: a disk; a head for writing data to the disk and reading the data from the disk; and a controller for controlling write processing on the basis of a first determination value corresponding to a first deviation amount specified for each excess time in which the first deviation amount in a radial direction of the disk of the head exceeds a first threshold causing a read error in a second track adjacent in the radial direction of the first track and a second threshold changing the write processing, at the time of write processing of the first track of the disk.SELECTED DRAWING: Figure 1

A tape storage device, a computing system, and a method for a tape storage device are provided. The tape storage device includes: a plurality of tape assemblies arranged in a first direction, each of the plurality of tape assemblies including a first reel, a second reel, and tape wound between the first reel and the second reel, the first reel and the second reel facing each other in a second direction that intersects with the first direction; a drive component coupled to the plurality of tape assemblies and adapted to drive and wind the tape of the plurality of tape assemblies; and a magnetic head component adapted to read from and write to the tape of the plurality of tape assemblies. This significantly reduces the addressing time of the tape storage device and improves the random access performance of the tape storage device, making the tape storage device applicable to more application scenarios.

A solid state drive and a memory mode switching method. The memory mode switching method is applicable to a memory, and the memory mode switching method is performed by a controller and includes: receiving a user instruction, wherein the user instruction specifies a specified operation mode of the memory; formatting a storage space of the memory according to the user instruction; and switching the storage space from a current operation mode to the specified operation mode after the formatting.

The invention discloses a multi-dimensional optical disk data format design method, which comprises the following steps of: numbering N data layer positions of a multi-dimensional optical disk to obtain layer numbers; each data layer is divided into continuous BANDs from inside to outside, M is larger than or equal to 200, each BAND stores fixed-capacity user data, and 1-3 circles of blank areas are reserved between every two adjacent BANDs to serve as boundary identification bands; the width of the BAND is gradually increased according to a gradient of 0.1-0.7 mm from outside to inside along the radial direction, and the width of the BAND on the innermost side is adaptive to the field of view of the image sensor; dividing the storage structure of each BAND into a BAND head, a data segment and a BAND tail which are arranged in sequence; the BAND head comprises a position identification area and a file information area; the data segment comprises data frames, synchronization frames and error correction frames which are alternately arranged; the BAND tail comprises a filling area and a tail identification area; according to the method, the addressing efficiency, the data extraction accuracy, the storage efficiency and the cross-device compatibility can be remarkably improved, the method is adaptive to a TB-magnitude high-capacity multi-dimensional optical disk, and the requirement for archiving and storing big data is met.

An end of data set (EOD) containing a high-resolution tape directory (HRTD) is written on the tape adjacent to the last written user data set. When a new user data set is appended, the new user data set is written starting at the position adjacent to the end longitudinal position (LPOS) of the EOD, creating an overwritten EOD.

The present application discloses an information processing apparatus and an information processing method in which a predetermined kind of audio data can be easily reproduced from a plurality of kinds of audio data. A file generation device generates an audio file in which a plurality of groups of audio streams are arranged to be divided into tracks for each group or a set of more than one groups, and information related to the plurality of groups is arranged. The present application can be applied to an information processing system constituted by, for example, a file generation device for generating a file, a web server for recording a file generated by the file generation device, and a video reproduction terminal for reproducing the file, and the like.

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.

To provide a magnetic disk drive capable of suitable servo control. [Solution] The magnetic disk device comprises a magnetic head and a magnetic disk. Multiple servo regions, each containing multiple data fragments, are arranged at equal intervals in the circumferential direction on the magnetic disk, with servo data written to them in a circumferential direction. At multiple consecutive first radial positions, the recording frequency of the servo data differs for each first radial position. In each of the multiple servo regions, the first data fragment among the multiple data fragments is written to a first circumferential position where the circumferential movement time of the magnetic head, based on the timing when the magnetic head passes a reference position on the circumference, is aligned among the multiple first radial positions.

A magnetic tape defined with one or more data partitions and one or more parity partitions is obtained, wherein each of the data partitions is separated from each of the parity partitions correspondin

An optical data storage tape includes more than one segment, with each segment divided into multiple zones, which include multiple data tracks. The layout of the logical zones in one segment is in a different order than those of another segment. In an example, the tape includes at least N physical segments, at least M physical zones in each segment, at least M logical zones assigned to the M physical zones, and wherein logical zones of adjacent physical segments are in a different order than an adjacent physical segment.

To appropriately perform error correction.SOLUTION: According to one embodiment, in a disk device, a controller can perform error correction for each sector in units of tracks. The controller can predict that the number of error sectors of the second track reaches the correction limit number of sectors according to the track margin specified by the first management information and the off-track amount of the first track while writing data to the first track with the head. The first track is a track of the plurality of tracks. In the first management information, track identification information and a track margin are associated with each of the plurality of tracks. The second track is a track adjacent to the first track among the plurality of tracks. For each of the plurality of tracks, the controller updates the first management information according to the reference value of the bit error rate and the bit error rate of the information read from the track.SELECTED DRAWING: Figure 1

To provide a magnetic disk device that can efficiently search for commands. [Solution] A magnetic disk device according to one embodiment includes a magnetic disk, memory, and a controller. The magnetic disk includes a plurality of areas, each with a unique address. The memory stores a plurality of pending commands. The controller stores a tree-structured database in memory. The structure includes a plurality of nodes, each associated with a plurality of addresses specified by each of the plurality of pending commands, and two of the plurality of nodes are associated with each other. The controller selects a candidate command to be executed next from among the plurality of pending commands from a command associated with an address greater than the start address and closest to the start address, and a command associated with an address less than the start address and closest to the start address.

The present invention provides a magnetic disk device and a control method therefor that can accurately detect sync marks on a spiral pattern. [Solution] Multiple adjustment patterns with different frequencies are written to each magnetic disk by each magnetic head. Each written adjustment pattern is read by each magnetic head, and the number of sync marks contained in the read signal is detected. The frequency of the adjustment pattern that yields a number of detected marks above a threshold is selected as the write frequency for each magnetic head. A spiral pattern with the same frequency as the selected write frequency is written to each magnetic disk by each magnetic head. While tracking the written spiral pattern, a servo pattern that serves as the reference for the seek positioning control of each magnetic head is written to each magnetic disk by each magnetic head.