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| Number | Title | Issue Date |
| 7120084 | Integrated memory controller A system and circuit for reading and writing data to a buffer memory, which is Synchronous Dynamic Random access Memory (“SDRAM”), or Double Data Rate-Synchronous Dynamic Random Access Memory (“DDR”) is provided. The circuit includes logic for managing progr... | 10/10/2006 |
| 7116509 | Magnetic disk apparatus and servo signal recording method A magnetic disk apparatus capable of generating a reference clock signal without using an external reference by writing a clock track only once using a head of the magnetic disk apparatus even if the head is of a read/write element separation type. Using the head of... | 10/03/2006 |
| 7113864 | Fully automated vehicle dispatching, monitoring and billing A system for controlling vehicles to provide transportation services without need for human intervention. A database stores records each documenting needed transportation services. Processing circuitry (which may be one or several networked computers) reviews these ... | 09/26/2006 |
| 7109670 | Motor drive with velocity-second compensation An apparatus for use with a signal generator and a motor controller includes a velocity compensator, an adjustor, and a velocity regulator. The signal generator provides a reference velocity signal, and the motor controller receives an output signal and uses the out... | 09/19/2006 |
| 7110200 | Magnetic disk control apparatus, magnetic disk control method, magnetic disk control program, and magnetic disk A magnetic disk control apparatus is capable of reducing the overall length of synchronization fields in split sectors and hence capable of increasing the storage capacity for data fields. The apparatus records data for each sector in such a manner that when a servo... | 09/19/2006 |
| 7110199 | Information recording and reproducing apparatus, signal decoding circuit, and information recording medium and method Upon data recording, a data recording unit inserts revise bytes as a predetermined specific code train into at least two or more portions including the head and last portions of data and records the data onto a medium. Upon data reproduction, a data reproducing unit... | 09/19/2006 |
| 7110202 | Disk drive employing multiple index marks A disk drive is disclosed comprising a disk surface having a plurality of concentric, radially spaced tracks, wherein each track comprises a plurality of data sectors and a plurality of servo sectors. At least two different index marks are distributed around the cir... | 09/19/2006 |
| 7110209 | Systems and methods for efficient writing of low-RRO phase-burst servo patterns The minor coherence-errors suffered during servowriting of bursts in a phase burst servo pattern may contribute to significant written-in runout of the resulting pattern. Embodiments of the present invention enables the servowriting of both the zig/zag bursts and/or... | 09/19/2006 |
| 7110431 | Hardware and software for performing computations in a short-code spread-spectrum communications system The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection ... | 09/19/2006 |
| 7111085 | Flash memory card with enhanced operating mode detection and user-friendly interfacing system An interfacing system facilitating user-friendly connectivity in a selected operating mode between a host computer system and a flash memory card. The interfacing system includes an interface device and a flash memory card. The interfacing system features significan... | 09/19/2006 |
| 7106534 | Method for compensating timing to start data recording and magnetic disk device using same Head-to-head variations in the head gap distance between write and read heads is compensated by measuring the head gap distance in each head by writing and reading a predetermined unique pattern, and compensating the timing to start the data writing by changing it i... | 09/12/2006 |
| 7102839 | Magnetic recording channel utilizing control fields for timing recovery, equalization, amplitude and amplitude asymmetry Channel parameters for a magnetic readback channel are optimized by detecting a readback signal that is recorded on a magnetic medium. The readback signal contains a plurality of predetermined-length control fields. Each control field is arranged between two user da... | 09/05/2006 |
| 7102847 | Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating charac... | 09/05/2006 |
| 7102846 | Identification of laterally positioned servo bands employing differentiating characteristics of servo patterns In a tape having separate servo bands of patterns positioned laterally across the tape, the patterns of a separate servo band have at least one differentiating characteristic with respect to patterns of another of the separate servo bands. The differentiating charac... | 09/05/2006 |
| 7099095 | Track identification codewords having multiple bit error correction capability and generalized gray code property The present invention may be embodied in a disk drive comprising a rotating magnetic media having tracks identified by binary codewords, and in a related method. Each track codeword for a particular track within a contiguous band of tracks differs from a track codew... | 08/29/2006 |
| 7099098 | Preamplifier circuit and method for a disk drive device An amplifying circuit and method are disclosed for amplifying electrical signals, such as electrical signals generated by the read head of a disk drive. The circuit includes a pair of cross-coupled differential amplifier circuits. Each differential amplifier circuit... | 08/29/2006 |
| 7092177 | Methods for searching for SAM patterns using multiple sets of servo demodulation detection parameters Methods for searching for a servo address mark (SAM) pattern using multiple sets of servo demodulation detection parameters are provided. A SAM pattern is searched for using a first set of servo demodulation detection parameters. The SAM pattern is also searched for... | 08/15/2006 |
| 7092185 | Write gate timing for a servo bank A recording system records sector information on a recording medium, such as a hard disc drive, using a write gate signal. Timing of the write gate signal enables writing a servo data patterns over the servo wedge fields of the disc and, if the hard disc drive conta... | 08/15/2006 |
| 7092179 | Write precompensation amount setting method and apparatus A write precompensation amount setting method and apparatus comprise a function detecting the respective head characteristics with an electric current used at an ordinary temperature and a irregular electric current, and a function setting an optimum write precompen... | 08/15/2006 |
| 7092184 | Monitoring a sensor's output using a target window that is based on a longitudinal offset's position-dependent indicator Using a “reference” sensor, a reference position is detected in a frame of reference that is moving along a predetermined path relative to the reference sensor. The reference position is used to derive a position-dependent indicator of a position-dependent “lo... | 08/15/2006 |
| 7092883 | Generating confidence scores from word lattices Systems and methods for determining word confidence scores. Speech recognition systems generate a word lattice for speech input. Posterior probabilities of the words in the word lattice are determined using a forward-backward algorithm. Next, time slots are defined ... | 08/15/2006 |
| 7092183 | Template pattern for improving printed media self-servo writing Template patterns in accordance with the present invention can be applied to improve printed media self-servo writing by reducing PES noise and SAM error-rate at an outer diameter of a reference surface of a disk. In one such template pattern, zig-bursts within a se... | 08/15/2006 |
| 7092198 | Access performance adjusting method and storage apparatus An access performance adjusting method is adapted to a storage apparatus having a storage to prestore a skew quantity that is used to shift a data write starting position of each track of a recording medium depending on a head moving time required to move a head fro... | 08/15/2006 |
| 7091895 | A/D converter, digital PLL circuit using the same, and information recording apparatus using the same An A/D converter includes a low-bit resolution A/D which converts an input signal into a digital value of 4 bits or less, and a low-pass digital filter which suppresses a high-frequency-band component in an output from the low-bit resolution A/D, and extracts phase ... | 08/15/2006 |
| 7092181 | Magnetic recording apparatus A method of enhancing the thermal stability of gray codes is disclosed. The gray code block in a servo area is recorded with a combination of two different magnetization directions. When the two different magnetization directions are expressed as “+” and “−... | 08/15/2006 |
| 7092462 | 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 recording medium and generated by an A/D converter at a symbol rate, and ... | 08/15/2006 |
| 7092468 | Timing recovery system for a multi-pair gigabit transceiver A method and a timing recovery system for generating a set of clock signals in a system which includes a set of subsystems. Each of the subsystems includes an analog section. The set of clock signals includes a set of sampling clock signals. Each of the analog secti... | 08/15/2006 |
| 7088536 | Magnetically recorded data reproduction apparatus and method thereof A magnetically recorded data reproduction apparatus that reproduces magnetically recorded data using a magnetoresistive head and method thereof. The recorded data are reproduced by a magnetoresistive head and supplied to a reproduction amplifier. A signal from an AG... | 08/08/2006 |
| 7088533 | Method of self-servo writing in a disk drive using a spiral pattern A disk drive includes a head and a disk, spiral patterns are located on the disk, and the disk drive self-writes servo patterns on the disk using the spiral patterns as a reference for servoing the head. In an embodiment, the disk drive uses preliminary servo patter... | 08/08/2006 |
| 7088534 | Disk synchronous write An apparatus, method, and system for writing data to a hard disk drive synchronous with an apparent disk speed. The apparatus, method, and system has a phase-locked loop (PLL) to generate am output clock signal, wherein a clock interpolator responsive to phase rotat... | 08/08/2006 |
| 7089353 | Radial self-propagation pattern generation for disk file servowriting A method for writing a servopattern comprises writing a first burst at a first radial position, writing a second burst at a second radial position, wherein an edge of the first burst and an edge of the second burst have a substantially similar common radial position... | 08/08/2006 |
| 7085084 | Magnetic disk apparatus and servo pattern recording method therefor A magnetic disk apparatus and a servo pattern recording method therefor, enabling writing of servo signal with high quality, without being affected with ill influences due to fluctuation on a rotation speed when conducting the self servo write operation, comprises: ... | 08/01/2006 |
| 7085088 | Method of controlling reader amplifier gain variations of a HDD preamplifier, or the like An amplifier (70) has a differential input stage (84,86). An output transistor (102) is connected to receive a single ended output developed by transistor 86. First (74) and second (76) current sources are connected to estab... | 08/01/2006 |
| 7085085 | Disk driving apparatus and method for operating disk driving apparatus A first delay circuit receives a sampling clock obtained by multiplying detected frequency of reference clock patterns and outputs delay clocks from first delay stages, respectively. Recording frequency of the sampling clock is not obtained using the reference clock... | 08/01/2006 |
| 7085666 | Magnetic head testing apparatus A magnetic head testing apparatus includes reference information storing unit for holding a predetermined reference sampling period and a number of reference samplings, sampling unit for sampling reproduced data read a plurality of times from a magnetic medium in th... | 08/01/2006 |
| 7085975 | Method and apparatus for generating expect data from a captured bit pattern, and memory device using same Expect data signals are generated for a series of applied data signals having a known sequence to determine if groups of the data signals were properly captured. A first group of the applied data signals is captured, and a group of expect data signals are generated ... | 08/01/2006 |
| 7082007 | Method to achieve higher track density by allowing only one-sided track encroachment A disc drive includes a transducer having a separate element for writing information and a separate element for reading information to and from the disc. In a disc drive designated to read and write long sequential records, the track misregistration budget is reduce... | 07/25/2006 |
| 7082005 | Servo data detection in the presence or absence of radial incoherence using digital interpolators Techniques for detecting data, such as servo data, from input or incoming data read from a transmission medium, such as magnetic recording medium, in the presence or absence of radial incoherence. In one illustrative recording medium-based aspect of the invention, s... | 07/25/2006 |
| 7079567 | Digital modulation system using extended code set A digital (de)modulation system uses a larger code set of M codes for N length codes, where M>N, to provide an increased data rate while maintaining the coding gain. For example, the system can use 16 different codes each having a length of 11 chips in a code set wh... | 07/18/2006 |
| 7079343 | Time-based sectored servo data format The invention combines the benefits of sectored servo data with the benefits of time-based servo data. Recording media such as magnetic tape, magnetic disks, optical tape and optical disks can store servo data in a time-based sectored servo format. ... | 07/18/2006 |
