Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8130458 | BPM recording with more than one dot per bit Data storage systems are provided. Data storage systems illustratively include a recording head having a writing element and a bit patterned medium having a plurality of media dots. In some embodiments, the plurality of media dots pass the recording head at a media ... | 03/06/2012 |
| 8040626 | High-rate transition control code for magnetic recording channels A method and apparatus for reducing noise in a communication signal is provided. The method includes converting raw channel data from the communication signal to a sequence of transition code symbols, each symbol having a plurality of bits, each bit having a positio... | 10/18/2011 |
| 7965462 | Storing partial data sets to magnetic tape Methods, logic, apparatus and computer program product write data, comprising less than a full Data Set, to magnetic tape. Data is received from a host, a do-not-interleave command is issued and C1 and C2 ECC are computed. Codeword Quad (CQ) sets are then formed. At... | 06/21/2011 |
| 7876516 | Rewrite-efficient ECC/interleaving for multi-track recording on magnetic tape For writing data to multi-track tape, a received data set is received and segmented into unencoded subdata sets, each comprising an array having K2 rows and K1 columns. For each unencoded subdata set, N1-K1 C1-parity bytes... | 01/25/2011 |
| 7808735 | Magnetic disc controller and method A magnetic disk controller includes a first buffer that includes a first storage area that stores former portions of pieces of writing data, and a second storage area that stores latter portions of pieces of writing data; an encoding unit that encodes a former porti... | 10/05/2010 |
| 7760454 | Sequence-permutation control information detection and signal polarity determination Systems and techniques relating to interpreting signals on a noisy channel with polarity uncertainty. A signal processor, such as a read channel transceiver device usable in a magnetic recording system, includes a detector operable to find a data pattern that indica... | 07/20/2010 |
| 7715135 | Methods, circuits, apparatus, and systems for read channel synchronization and/or fly height measurement Methods, circuits, and systems for processing a preamble field in a read channel (e.g., in a magnetic storage device such as a hard disk drive). The methods generally include the steps of (a) reading the preamble field, wherein the preamble field comprises a repetit... | 05/11/2010 |
| 7688535 | Extracting position information using user data A method is disclosed for determining position information of a transducer. At least a first code and a second code are chosen. The first code has different characteristics than the second code. User data written to a first sub-track is encoded with the first code a... | 03/30/2010 |
| 7679850 | Position determination using circular shift codes A shift code that consists of N-symbol code words is provided as an L-symbol “master sequence” in which no sub-sequence of N symbols repeats, where L≦SN and S is the number of code symbols. A decoder determines a location in the code from N decoded ... | 03/16/2010 |
| 7612959 | Method for correcting added and lost bits in a hard disk drive using error correction codes A hard disk drive with an encoder that writes data onto a disk in accordance with a plurality of first codes. Each code contains a plurality of digital bits. The first codes are selected so that if a bit is added or dropped during a write or read process the resulti... | 11/03/2009 |
| 7433141 | Data randomization for rewriting in recording/reproduction apparatus A data recording/recovery device (20) comprises a packet generator (34) for including recordable information into a packet (44), the packet initially having a nominal run length limited (RLL) sequence if it were RLL encoded. A randomizer (38 | 10/07/2008 |
| 7379452 | Synchronous read channel A synchronous read channel having a single chip integrated circuit digital portion which provides digital gain control, timing recovery, equalization, digital peak detection, sequence detection, RLL(l,7) encoding and decoding, error-tolerant synchronization and chan... | 05/27/2008 |
| 7372717 | Methods for resistive memory element sensing using averaging A system for determining the logic state of a resistive memory cell element, for example an MRAM resistive cell element. The system includes a controlled voltage supply, an electronic charge reservoir, a current source, and a pulse counter. The controlled voltage su... | 05/13/2008 |
| 7372651 | Introducing a noise signal into a read-back signal when data is written to a removable data storage medium In one exemplary embodiment, a noise signal is introduced into a read-back signal when data is written to a removable data storage medium. While writing the data to the removable data storage medium, a portion of the data written to the removable data storage medium... | 05/13/2008 |
| 7372652 | Correcting errors in disk drive read back signals by iterating with the Reed-Solomon decoder A read channel includes a signal receiver that receives a read back signal and a signal detector to detect symbols in the read back signal. The signal detector includes a first detector that generates raw decisions as a function of the read back signal, a post proce... | 05/13/2008 |
| 7369476 | Device for reading from or writing to optical recording media having a control unit for a data slicer The present invention relates to a device for reading from and/or writing to optical recording media (1) having an optical scanner (2) for scanning the recording medium (1) by means of a light beam (3) and for generating scanning signals ... | 05/06/2008 |
| 7366071 | Data recording method and device, data recording medium, data reproduction method and device The present invention provides a DSV normal controller and a DSV special controller. In only a predetermined region designated on an optical disc, the DSV special control is performed. The DSV special control causes the absolute value of the DSV to increase so that ... | 04/29/2008 |
| 7363561 | Method and circuit arrangement for resetting an integrated circuit The invention relates to a method for resetting at least one circuit part of an integrated circuit, in particular a synchronous semiconductor memory, in which a clock signal and a clock signal that is inverted with respect to the latter are provided in order to cloc... | 04/22/2008 |
| 7359132 | Equalization preamble region in digital data storage (DDS) format A magnetic tape includes plural diagonal tracks, each storing a preamble sequence close to user data such that a transducer for reading the track reads the preamble sequence immediately before reading the user data. The preamble sequence is such that when the track ... | 04/15/2008 |
| 7355808 | Method and apparatus for partial self-servo writing using servo wedge propagation A method and apparatus for partial self-servo writing a disk surface in a disk drive using servo wedge propagation is provided. In one embodiment, servo information is written by a servo track writer near an outer diameter of the disk surface. The servo information ... | 04/08/2008 |
| 7330390 | Noise resistant small signal sensing circuit for a memory device Apparatus and method for data sensing circuitry that uses averaging to sense small differences in signal levels representing data states. The apparatus periodically switches the coupling of input terminals and output terminals of an integrator circuit from a first c... | 02/12/2008 |
| 7327096 | Electrode temperature differential operation of a discharge lamp The invention relates to a method for operating a discharge lamp 11 including two electrodes 12,13. The method comprises applying to the electrodes an alternating current ILamp. In order to improve the performance of the lamp and to increase... | 02/05/2008 |
| 7324560 | Recovering clock and frame information from data stream A method for transmitting a digital data stream includes recovery of data clock information and data frame information from the digital data stream. The method includes providing a digital data stream having successive data stream units. Each data stream unit includ... | 01/29/2008 |
| 7319645 | Recording apparatus and recording method for recording data to a rewritable recording medium, and rewritable recording medium A recording apparatus for recording modulated data on a rewritable recording medium includes a data modulation section for modulating data in accordance with a prescribed modulation rule; a parameter value changing section for changing at least one parameter value o... | 01/15/2008 |
| 7320101 | Fast parallel calculation of cyclic redundancy checks Circuits, methods, and apparatus for the fast parallel calculation of CRCs. One embodiment provides a feedforward path that combines common terms to simplify input logic. Common expressions that appear in multiple terms in the feedforward path are implemented using ... | 01/15/2008 |
| 7319686 | Frame synchronization in multi-cell systems with a data interface A method of timing in a multi-cell system requiring synchronization of frames in transmission is provided. Transceivers of a wired data interface between a central controller and multiple base stations are synchronized to a frame timing clock up to a difference in p... | 01/15/2008 |
| 7317586 | Methods and structure for general purpose interval accumulating filter for measuring operational parameters of a digital read channel Methods and structures for a general purpose, discrete time sample, interval accumulating filter for measuring any of a plurality of parameters associated with operation of a digital read channel. The general purpose interval accumulating features and aspects hereof... | 01/08/2008 |
| 7302024 | Method of and apparatus for detecting impulsive noise, method of operating a demodulator, demodulator and radio receiver In a digital receiver for receiving COFDM modulated television signals or the like, consecutive samples are compared with a detection threshold and the number of samples having amplitudes greater than the threshold is determined. This is compared with a further thre... | 11/27/2007 |
| 7296030 | Method and apparatus for windowing in entropy encoding The present invention provides efficient window partitioning algorithms for entropy-encoding. The present invention enhances compression performance of entropy encoding based on the approach of modeling a dataset with the frequencies of its n-grams. The present inve... | 11/13/2007 |
| 7292161 | NB/MB coding apparatus and method using both disparity independent and disparity dependent encoded vectors Techniques for encoding N-binary symbol (NB) source data vectors into M-binary symbol (MB) encoded vectors, M>N>0, are provided. Techniques for decoding are also provided. Exemplary coding and decoding apparatuses are presented, as is an exemplary 8B/10B encoding sc... | 11/06/2007 |
| 7286684 | Secure document design carrying auxiliary machine readable information A two dimensional pattern design for secure documents serves as both a machine readable code and an aesthetic part of the documents' design. A method for generating the design generates a variable auxiliary message comprising message values and maps the message valu... | 10/23/2007 |
| 7286065 | Method and apparatus for DC-level constrained coding A method and apparatus reduces a DC level of an input word. The input word is divided into a plurality of components that include n symbols. The n symbols of the components are summed for each component. The component is encoded into a substitute component if a sum ... | 10/23/2007 |
| 7274527 | Method for optimizing dynamic stroke in the self servo-write process Methods in accordance with embodiments of the present invention can be applied to determine a width of a data stroke along a rotatable medium of a data storage device. In one embodiment, the width can be determined by measuring a distance from a marker zone edge of ... | 09/25/2007 |
| 7272428 | Wireless electrocardiograph system and method A method and system for wireless ECG monitoring is provided. An electrode connector, transmitter and receiver operate with existing electrodes and ECG monitors. The electrode connector includes connectors for attaching to disposable or reusable single electrodes. Th... | 09/18/2007 |
| 7268707 | Coding device and decoding device Embodiments of the invention allow relatively simple circuits to provide a coding device capable of coding longer bit-length data suitably for disk apparatus and a decoding device capable of decoding the data coded by the coding device. In one embodiment, a coding d... | 09/11/2007 |
| 7265935 | Velocity adaptive compensator for a synchronous sampling time-based servo system Disclosed are a system, a method, and article of manufacture to provide a velocity adaptive compensator for a synchronous sampling servo control system. ... | 09/04/2007 |
| 7260167 | Method and apparatus for synchronization of a bit stream for long latency date detection A method is for decoding a bit stream from a waveform representing the bit stream, having a first synchronization mark, data, and a second synchronization mark. Digitized samples are decoded to form a reconstructed bit stream. The reconstructed bit stream is then st... | 08/21/2007 |
| 7260151 | Dual phase pulse modulation system A system configured to transmit and receive data signals over a data link in serial fashion using dual phase pulse modulation (DPPM) is described. The data link may be, for example, a one or two wire unshielded twisted pair (UTP) cable. An exemplary system includes ... | 08/21/2007 |
| 7254672 | Translation device driver for translating between disk device driver and tape device driver commands A translation device driver apparatus and method are disclosed. A first type of request is received from a disk-based file system to access a first type of storage device. The first type of storage device permits direct access reads and writes and implements update-... | 08/07/2007 |
| 7253979 | Method and device for data read/write, recording medium, and program product A data read/write device includes a data write-processing unit that performs amplitude modulation on write data to obtain an amplitude-modulated signal that contains a plurality of amplitude levels, correlates a plurality of data included in the write data with each... | 08/07/2007 |
