Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8107179 | Magnetic disk drive, servo writer, self-servo writer and methods for use therewith A servo writer includes a servo data generation module that generates servo data corresponding to a plurality of servo wedges and a plurality of tracks of a disk, the servo data including track identification data that is repetition coded. A servo write module write... | 01/31/2012 |
| 8094398 | Arrangement method of servo pattern of patterned medium, patterned medium, and information storage device According to one embodiment, address information is expanded on a bit map in order to generate original address information which is divided in a direction of the abscissa to form groups. The demodulated values of the original address information are obtained as ori... | 01/10/2012 |
| 7800853 | Correcting servo sectors in a disk drive A disk drive is disclosed comprising a disk having a plurality of data tracks defined by a plurality of servo sectors, wherein each servo sector comprises a Gray coded address representing at least part of a track address. The disk drive further comprises a head act... | 09/21/2010 |
| 7710676 | Disk drive comprising gray code implemented with servo bursts A disk drive is disclosed comprising a disk including a plurality of servo tracks defined by a plurality of servo sectors, wherein each servo sector comprises a plurality of servo bursts. The disk drive further comprises a head actuated over the disk. A servo sector... | 05/04/2010 |
| 7701655 | Servo signal recording method, servo signal recording apparatus, and magnetic recording medium The present invention is a servo signal recording method for recording a servo signal on a magnetic tape having a data band and a servo band, wherein erasure is performed based on a pulse having a duty ratio varied so that a driving time of the AC erasing head with ... | 04/20/2010 |
| 7667910 | Magnetic disk drive, servo writer, self-servo writer and methods for use therewith A servo writer includes a servo data generation module that generates servo data corresponding to a plurality of servo wedges and a plurality of tracks of a disk, the servo data including burst data that is repetition coded. A servo write module writes the servo dat... | 02/23/2010 |
| 7663830 | Method of forming servo data of HDD and self servo write method using the same A method of forming servo data, and a self-servo write method using the same, the method including partial response maximum likelihood (PRML)-coding servo data into m bits in n-bit units; multiplying each bit of the PRML-coded result by an o multiple; and converting... | 02/16/2010 |
| 7633697 | Magnetic disk drive, servo writer, self-servo writer and methods for use therewith A servo writer includes a servo data generation module that generates servo data corresponding to a plurality of servo wedges and a plurality of tracks of a disk, the servo data including track identification data that is repetition coded. A servo write module write... | 12/15/2009 |
| 7605992 | Robust LPOS detection with predictor and bit verifier A tape drive system which includes the ability to reliably reproduce LPOS information even if both of the servo channels of the tape drive system could not detect the LPOS information due to defects. The system recognizes that an LPOS sequence is sequentially increm... | 10/20/2009 |
| 7542223 | Magnetic disk drive using load/unload area for data storage Embodiments of the invention provide ways to write data in a load/unload area. In one embodiment, address numbers (ranging from 981 to 1065) whose order of addressing by host equipment is later than that of address numbers (ranging from 1 to 980) as logical block ad... | 06/02/2009 |
| 7508610 | Method and apparatus for recording servo frame, storage disk, and method and apparatus for obtaining servo frame information A servo-frame recording apparatus includes: a sector information rearranging section for rearranging serial bits of the sector information that is binary data; a first ExOR section for performing the ExOR (exclusive OR) on the sector information, the serial bits of ... | 03/24/2009 |
| 7398006 | Disc access processor processing a result of accessing a disc and method thereof Prior to recording, a difference between a disc's temporal, maximum recordable length and a temporal length having been consumed by recording data is calculated. A scale is determined to allow a length of a period of a preprogrammed recording to be relatively matche... | 07/08/2008 |
| 7394606 | Information storage device and write control circuit On writing information to an information recording medium including multiple recording areas having logical addresses assigned thereto, each of the recording areas having information recorded therein with a check code generated based on the logical address of the re... | 07/01/2008 |
| 7372657 | Mechanism for minimizing unload times in a tape drive system In one embodiment, a method and apparatus for minimizing unload times in a tape drive system is disclosed. The method includes: writing to a tape in serpentine format; reaching a comparison point on the tape, wherein at the comparison point an actual capacity is com... | 05/13/2008 |
| 7369343 | Disk drive correcting track address during a write operation A disk drive is disclosed comprising a head actuated over a disk having a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors and each servo sector comprises a track address. A read signal from the head representing a first tra... | 05/06/2008 |
| 7370166 | Secure portable storage device In one embodiment of the present invention, a secure storage system includes a removable storage device having a secure storage area for storage of secure data and a public storage area and device port for coupling the removable storage device to a host, the removab... | 05/06/2008 |
| 7362525 | PRML based magnetic servo position demodulator Apparatuses and methods for detecting reference marks on magnetic data storage mediums are described herein. In one variation, the apparatus comprises a magnetic servo position demodulator operable to extract information from the magnetic data storage medium utilizi... | 04/22/2008 |
| 7359848 | Tape storage emulator A tape storage emulator has a disk storage, a tape storage, a server interface, a data path control, a virtual tape management and a personality logic. The server interface is in communications with a server so as to receive and transmit tape storage commands and ta... | 04/15/2008 |
| 7340581 | Method of writing data to non-volatile memory According to a first aspect of the invention, there is provided a controller connected to a non-volatile memory and including a volatile memory, wherein the controller maintains lists in volatile memory of blocks in the non-volatile memory allocated for storage of l... | 03/04/2008 |
| 7330321 | Reference magnetic signal recording device and method of manufacturing the same A method of simultaneously recording multiple reference magnetic signals by using a magnetic head having multiple recording portions is provided. A writing yoke formed of a ferromagnetic material thin film and a back yoke are provided to a side wall of a slider, whi... | 02/12/2008 |
| 7324300 | Head position control method, head position control device and disk device A head position control device controls the position of a head with respect to a disk where post code is assigned to a servo frame. Servo frames of a disk is constituted by a servo frame not having a post code recorded in an inner side zone and a servo frame having ... | 01/29/2008 |
| 7289096 | Shift register and a display device using the same A shift register in which multiple stages are connected one after another to each other, the multiple stages having a first stage in which a start signal is coupled to an input terminal, the shift register sequentially outputting output signals of respective stages.... | 10/30/2007 |
| 7283442 | Method for choosing the defect detection mode of an optical storage device At least one detection area on an optical storage medium is allocated for data storage first, and then the detection area is set to a defect detection mode of either write detection or write verification, depending on the number of defects stated in a previous defec... | 10/16/2007 |
| 7275686 | Electronic equipment point-of-sale activation to avoid theft In accordance with an embodiment of the present invention, an electronic device is displayed for purchase by a user and includes a controller and a protected area for storing a key and a bar code associated with and for identifying the device including a password un... | 10/02/2007 |
| 7263591 | Increasing the memory performance of flash memory devices by writing sectors simultaneously to multiple flash memory devices In one embodiment of the present invention, a memory storage system for storing information organized in sectors within a nonvolatile memory bank is disclosed. The memory bank is defined by sector storage locations spanning across one or more rows of a nonvolatile m... | 08/28/2007 |
| 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 |
| 7254724 | Power management system According to one embodiment of the present invention, there is provided a power management system for use in a computer system having a memory system incorporating a non-volatile memory and a controller which presents the logical characteristics of a disc storage de... | 08/07/2007 |
| 7249168 | Method and apparatus for automated remote volume mounting using a plug-in installed on a client A method and apparatus for remotely and automatically mounting volumes over a network. The invention uses an interface, such as a web browser, to authenticate a client on a server. The server supplies volume mounting parameters specific to the authenticated client v... | 07/24/2007 |
| 7242546 | Determining a location based on a cyclic bit sequence containing consecutively-placed identical bit-groups A location within a cycle is determined by reading a portion of a cyclic bit sequence, the bit sequence containing several interspersed bit-group sets that each contain a plurality of series that each consist of several consecutively-placed identical bit-groups. On ... | 07/10/2007 |
| 7239472 | Method and apparatus for writing data in a disk drive According to one embodiment, there is to provide a data write method which is applied to a disk drive, for recording data on a disk medium by a head mounted on a rotary type actuator. The method carries out a track pitch conversion processing so that a track pitch o... | 07/03/2007 |
| 7227710 | Method for operating disk drive having improved timing marks A method for operating a disk drive having timing marks (TMs) on the disk that are chosen to reduce the probability of misidentification of a TM in the presence of read errors. The disk drive searches for TMs within a fixed TM search window which extends past the TM... | 06/05/2007 |
| 7221295 | High speed serializer-deserializer A high speed serializer-deserializer (SerDes) that passes significantly more data through a channel for a given analog bandwidth and signal-to-noise ratio. This SerDes technique involves converting a plurality of bits to be transferred to positions of edges of a wav... | 05/22/2007 |
| 7219169 | Composite DMA disk controller for efficient hardware-assisted data transfer operations In one embodiment, a direct memory access (DMA) disk controller used in hardware-assisted data transfer operations includes command receiving logic to receive a data transfer command issued by a processor. The data transfer command identifies one or more locations i... | 05/15/2007 |
| 7218304 | Shift register and a display device using the same A shift register in which multiple stages are connected one after another to each other, the multiple stages having a first stage in which a start signal is coupled to an input terminal, the shift register sequentially outputting output signals of respective stages.... | 05/15/2007 |
| 7215580 | Non-volatile memory control According to an embodiment of the present invention, there is provided a method and apparatus for use in a memory system having a non-volatile memory and a controller for limiting the number of non-volatile memory arrays from a plurality of available arrays accessed... | 05/08/2007 |
| 7212364 | Servo writing a disk drive by synchronizing a servo write clock in response to a sync mark reliability metric A method of writing product servo sectors to a disk of a disk drive is disclosed. A plurality of spiral tracks are written to the disk, wherein each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. During the pro... | 05/01/2007 |
| 7206148 | Variable frequency chevron in printed media reference pattern to improve servo demodulation Reference patterns in accordance with the present invention can include variable frequency chevrons incorporated into a reference pattern on a printed media surface to improve servo demodulation. In an embodiment, the reference pattern can include one or more servo ... | 04/17/2007 |
| 7200546 | Tape storage emulator A tape storage emulator provides response data corresponding to a tape storage device and receives a non-media command from a server. The response data is sent to the server in response to the non-media command. A media command is received from the server. The media... | 04/03/2007 |
| 7190884 | Signal recording apparatus and method, signal reproducing apparatus and method, medium, and information assembly A signal recording apparatus includes a quantizer for quantizing a signal employing a quantization step. The apparatus further includes a quantization information creator for creating plural pieces of quantization information to specify the quantization step, an enc... | 03/13/2007 |
| 7185208 | Data processing In one embodiment of the present invention, there is disclosed a reversible method of processing data comprising the data being encrypted before being written to a non-volatile memory wherein the data cannot be accessed without decryption in the case of a direct phy... | 02/27/2007 |
