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8154822 |
Analog techniques to decode signals extracted from computer-readable storage media
Methods, apparatuses, and systems implementing analog techniques to decode signals extracted from servo wedges of computer-readable storage media. A digital signal representing a repeatable runout...
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8098447 |
Method and apparatus to limit DC-level in coded data
In a perpendicular magnetic recording system, the data that is being written by the write channel is fed back into the read channel. The read channel processes the data and decides if the written...
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8094400 |
Asymmetry correction in read signal
Systems and techniques relating to interpreting signals on a channel having an asymmetrical signal amplitude response include an integrated circuit device including: an input to receive digital...
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8081865 |
AV data recording apparatus and method, recording media recorded by the same, AV data reproducing apparatus and method, and AV data recording and reproducing apparatus and method
To provide an AV data recording and reproducing apparatus capable of easily carrying out real-time recording and reproducing via a 1394 interface, and method thereof. Input time information...
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8000054 |
Control device, control method, and information storage apparatus
A control device includes an acquisition section which acquires a reading signal from a head under plural heat amounts, an computation section which computes plural kinds of characteristic values...
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7974035 |
Timing recovery optimization using disk clock
Timing recovery optimization using disk clock. A novel means is presented to perform and provide control of the sampling frequency of a signal that is read from a disk within a hard disk drive...
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7933084 |
Corrective adjustment of recording characteristics in digital renditions of analog recordings
A signal reconstruction technique is used to correct for wow and flutter in analog audio recordings. Elements of the recording are used to generate a signal for correcting the output. Involves...
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7904045 |
Phase detector comprising a switch configured to select a phase offset closest to a phase of an amplifier
A phase detector includes a plurality of phase detectors located in a phase correction loop, each phase detector configured to receive as input a radio frequency (RF) input signal and an RF...
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7894151 |
“Flat analog” AFE coupled with an all digital architecture compensation read channel
Reading data from a magnetic storage media with an analog front end (AFE) coupled to an all digital read channel compensation architecture. A read head passes over magnetic storage media to produce...
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7864464 |
Disk clock system with up-sampler to generate frequency offset
A system reads data from a magnetic storage media. A read head reads data from the magnetic storage media and produce an analog signal. A variable gain amplifier amplifies the analog signal. An...
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7831127 |
Combining video material and data
A method of combining data with other material comprises the step of repetitively distributing the data in the other material. The data is for example metadata associated with the other material....
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7827232 |
Record button on a computer system
A record button that facilitates audiovisual input into a computer system without requiring manual interaction (direct manipulation interaction) with software. The record button may be grouped with...
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7817901 |
Recording and reproducing apparatus
A recording and reproducing apparatus including a reproduction unit configured to reproduce information data, which is error-correcting-coded for every N tracks, from a recording medium, wherein...
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7817362 |
Inspection apparatus and inspection method of magnetic disk or magnetic head
An inspection apparatus and method are disclosed for inspecting a magnetic disk or a magnetic head. A first reference signal generating source generates reference signals of a controllable...
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7783170 |
Method and apparatus for recording digital data streams and management information
An optical disc and a method and apparatus for recording digital data streams and management information on the disc, are provided. The method includes recording a digital data stream including at...
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7773325 |
Timing recovery for data storage channels with buffered sectors
A storage channel, e.g., for a disk drive system, may asynchronously sample and buffer an entire sector, and then process the buffered sector to recover timing information. The storage channel may...
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7768730 |
Base line control electronics architecture
A read channel in that reads data from a magnetic storage media. An analog signal produced by passing a read head over magnetic storage media is amplified to match the range of an analog to digital...
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7764458 |
Up-sampled filtering for servo demodulation
An apparatus, method, and system for providing a fine adjustment for transducing head positioning in a hard disk drive (HDD). The apparatus, method, and system include reading a positioning error...
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7702218 |
Image recording apparatus and semiconductor device
A coding/decoding part performs codes and decodes a given signal in one of a plurality of coding/decoding modes of different bit rates; and a control part sets a predetermined bit rate to be...
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7643728 |
Magnetic recording/reproduction apparatus
A video signal recording apparatus with a video and audio memorizing section for temporarily memorizing an inputted video audio signal, a time code generating section for generating a time-code of...
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7583458 |
Channel optimization metrics
A recording system, such as a magnetic or optical recording system, employs optimization metrics that are independent of a target partial response for equalization of a signal read from a recording...
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7583469 |
Up-sampled filtering for servo demodulation
An apparatus, method, and system for providing a fine adjustment for transducing head positioning in a hard disk drive (HDD). The apparatus, method, and system include reading a positioning error...
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7574115 |
Method to select recordings by their duration
The invention relates to a method for the selection of stored video programs (Si) in which, together with the video program (Si), their running time (tDi) and, if necessary, an information item...
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7555202 |
Digital dat recording/reproducing apparatus
A digital data recording/reproducing apparatus which divides each of information data pieces into a plurality of cells, further divides each of the cells into a series of a plurality of units, and...
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7502427 |
Asynchronous servo RRO detection employing interpolation
A repeatable read-out (RRO) detector employs one or more digital interpolators to interpolate asynchronous sample values that represent RRO data. The asynchronous sample values are read from a...
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7400821 |
Device and method for reproducing photographic sound recordings
For a reproduction of optical sound information in a double variable-area track (DZ) an optoelectronic converter device scans the optical sound track of a film. The converter device generates a...
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7328148 |
Transferring compressed audio via a playback buffer
A method for transferring real time information on a record carrier, typically bitstream audio on an optical disc, which method comprises encoding consecutive segments of the real time information...
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7227709 |
System and method for providing head amplitude characterization
To calibrate the VGA of a read head, test signals from a DAC are input to the VGA and the output of the VGA is observed, with the gain of the VGA being adjusted as appropriate. So that the DAC need...
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7199956 |
Disk drive self-servo writing using fundamental and higher harmonics of a printed reference pattern
Disk drive self-servo writing includes transferring a reference pattern by magnetic printing onto a reference disk, wherein the resulting printed reference pattern includes embedded servo...
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7191193 |
Automatic digital music library builder
A digital music library builder including an analog-to-digital converter for converting analog audio into digital audio, an optical character processor for recognizing characters within an image, a...
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7065291 |
Method of processing data packets, and video recording/playback apparatus incorporating the method
In a video recording/playback apparatus, when recording a series of packets transmitted over an IEEE 1394 bus, a relative value is taken between a requested time of arrival written in a header...
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7050704 |
Method for storing and retrieving digital data to/from a tape recording medium through a digital interface
A method for enabling a magnetic recording medium such as a digital video cassette tape of a digital video tape recorder to be used as an auxiliary storage device of a personal computer (PC) which...
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7047436 |
Digital microelectronic circuit with a clocked data-processing unit and a converting unit
A digital microelectronic circuit comprises a clocked data-processing unit (1) and a converting unit (2) which reads in data present at the output of the data-processing unit, performs a...
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7027245 |
Apparatus for providing head amplitude characterization using gain loops
An apparatus for providing head amplitude characterization using gain loops is disclosed. A variable gain amplifier (VGA) receiving input signals and generates a VGA output signal. A...
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7027239 |
Data acquisition system
A data acquisition apparatus acquires an analog input signal from an analog sensor, and generates digital data based on the analog input signal for processing by a personal computing apparatus. The...
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7027718 |
Packet data recording/reproducing system
A packet recording/reproducing system is provided which records or reproduces packets on or from tracks formed in time sequence on a magnetic tape. In a recording operation, the packet...
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7020834 |
Circuit and signal encoding method for reducing the number of serial ATA external PHY signals
A Circuit for reducing the number of serial ATA external PHY signals includes: a serializer/deserializer, connected to a storage medium controller through a set of parallel signal transmitting...
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6985320 |
Method and apparatus for encoding data to guarantee isolated transitions in a magnetic recording system
Provided is a method, system, and program for storing input groups of uncoded binary data on a storage medium. A plurality of uncoded data blocks in a data stream are received. An encoded data...
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6978080 |
Video switcher
A video switching apparatus in which an operating mode (recording/reproduction) of a recording/reproducing apparatus is discriminated from a video output signal of the recording/reproducing...
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6977975 |
Digital clock recovery PPL
An apparatus comprising an analog circuit, a first digital circuit, and a second digital circuit. The analog circuit may be configured to generate a plurality of samples of an input signal in...
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6922297 |
Double-attribute method of encoding and decoding magnetic data
A method of encoding and decoding data involving the simultaneous application of pulse width modulation and pulse position modulation systems to data intended for storage on a magnetic disk medium.
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6859903 |
Detection unit, device for reproducing an information carrier and method for detecting
Bits in a first binary signal are compared with one or more first binary patterns. For each first binary patterns, if the comparison meets a predetermined criteria for the first binary pattern,...
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6819512 |
Triple-attribute method of encoding and decoding magnetic data
A method of encoding and decoding data involving the simultaneous application of pulse amplitude modulation, pulse width modulation, and pulse position modulation systems to data intended for...
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6807366 |
Data recording apparatus, data recording/reproducing apparatus, data recording method, and data recording/reproducing method
The invention relates to a data recording apparatus in which a shuffling process for enabling a reproduced image to be easily seen in a high speed reproducing mode of a digital VTR is performed to...
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6788877 |
Recording and reproducing apparatus
A recording and reproducing apparatus includes a recording block for recording, on a recording medium, image data and error information indicative of presence or absence of any error in the image...
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6788484 |
PLL circuit, data detection circuit and disk apparatus
A PLL circuit is disclosed which extracts phase difference information of a high S/N ratio from a readout signal uses the phase difference information for PLL control. An A/D converter samples the...
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6781776 |
Magnetic card reader and magnetic data reproduction method using signal peak point intervals
A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an...
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6735028 |
Method and apparatus for increasing data storage capacity via phase and amplitude modulation
The capacity and realized data rate of a data storage medium is increased by storing multiple bits per symbol using digital modulation techniques. Both phase and amplitude modulation techniques can...
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6721487 |
Magnetic recording method and apparatus for digital signals, magnetic reproducing method and apparatus for digital signals and tape-shaped recording medium
A recording apparatus for digital signals which effectively utilizes production equipments or components for a magnetic tape to assure long-time recording of high-quality signals on the magnetic...
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6710955 |
Method and apparatus for converting an analog audio source into a digital format
An apparatus and method for converting and improving an existing analog audio recording as it is converted into a digital format with reliable tone detection and interpretation. Specifically, the...
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