Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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 |
| 7773483 | Information recording apparatus The objects of the present invention are to facilitate the driving of the recording energy source, and to secure sufficient cooling time of the recording medium to promote the high-speed formation of high-precision marks and to provide high-speed and large-capacity ... | 08/10/2010 |
| 7738339 | Data recording devices and methods thereof A data recording device. A random data generator randomly generates substitute data. A recording data generator receives original data and a recording address from a host, receives the substitute data, compares the recording address with a reference address, and out... | 06/15/2010 |
| 7684303 | Read-only optical recording medium on which unique identification information is written A method for recording a unique ID to a read-only optical disk adopts the 1-7 PP modulation technique and provides in a plurality of predetermined positions postscript areas each having a predetermined postscript pattern. The postscript pattern takes a form of 3T (p... | 03/23/2010 |
| 7649824 | Optical storage medium control data region An optical storage medium can be provided by which illegal usage of the optical storage medium involving an infringement on the copyright can be prevented effectively without impairment of the functions for reproducing physical format information and optical storage... | 01/19/2010 |
| 7646693 | Data overwriting in probe-based data storage devices A method and apparatus for overwriting data in a probe-based data storage device wherein data is represented by the presence and absence of pits formed in a storage surface by a probe of the device is provided. Input data is first coded such that successive bits of ... | 01/12/2010 |
| 7590042 | Read-only optical recording medium on which unique identification information is written There is provided a method for recording an unique ID to a read-only optical disk (1) adopting the 1-7 PP modulation technique and having provided in a plurality of predetermined positions postscript areas each having a predetermined postscript pattern formed therei... | 09/15/2009 |
| 7532558 | Data recording method and data recording medium A system for modulating digital binary data to be recorded on a recording medium comprises the generation of channel bits of the digital binary data to be recorded according to a standard for the recording medium with the exception that a maximum run length larger t... | 05/12/2009 |
| 7423950 | Apparatus for forming an image on an optical disk An optical disk apparatus for forming an image on an optical disk according to dot data which defines density of dots of the image, the optical disk apparatus includes: a framing unit which makes a frame data by grouping a plurality of unit data, wherein when the do... | 09/09/2008 |
| 7420905 | Information reproducing method judging a multivalued level of a present cell by referring to judged multivalued levels of a preceding cell and an ensuing cell A mark representing information of a multivalued level is recorded in each of cells arranged in a recording medium. Upon reproducing the multivalued level from a reproduction signal of the recording medium, the multivalued level of a present cell is judged by referr... | 09/02/2008 |
| 7414941 | Data recording device and data reproducing device The present invention provides a data recording device that can restrain the low-pass component in data to be written onto a recording medium without causing a problem in decoding the data using likelihood information. This data recording device includes: a data bit... | 08/19/2008 |
| 7403461 | Disc recording medium, disc drive apparatus, reproduction method, and disc manufacturing method A recording and reproducing area and a reproduction-only area are formed by wobbling a groove formed in a spiral fashion to form a track to be tracked on a disk. The recording and reproducing area has address information recorded by wobbling of the groove and inform... | 07/22/2008 |
| 7397751 | Optical disk apparatus, method of recording information, and information recording medium A recorded stream generator generates a data block stream in synchronism with the phase of a recording clock, from the input data. The recorded stream generator further generates, for each predetermined data unit constituting the data block stream, a data phase refe... | 07/08/2008 |
| 7385901 | Data recording/reproducing apparatus and method using needle-shaped member The data to be recorded onto a recording medium is directly spread and then recorded onto the recording medium through a needle-shaped member, such as a probe. Upon reproducing the data, the data read from the recording medium is de-spread and reproduced. ... | 06/10/2008 |
| 7382708 | Data recording/reproducing device A data recording device comprises a block division unit dividing a sequence of user data blocks into first blocks and second blocks, a plurality of multi-level data generating units generating multi-level data blocks from the first blocks and the second block, a gro... | 06/03/2008 |
| 7379502 | Method of converting digital data Disclosed is a method of digital data conversion. The method includes binding input digital data into unit blocks constituted by a plurality of bytes, modulation-coding each byte of the input data blocks by using a code conversion table, and allocating a merging bit... | 05/27/2008 |
| 7366084 | Optical recording medium with different wobble characteristics between the user data area and the lead-out area An optical recording medium has a user data area and a lead-out area, wherein the user data area and the lead-out area each has grooves and lands formed thereon. Wobbles are formed on at least one lateral surface of grooves of the user data area and the lead-out are... | 04/29/2008 |
| 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 |
| 7355942 | Optical disk and optical disk drive for suppressing a digital sum value and low-frequency components An optical disk apparatus for suppressing a Digital Sum Value (DSV) and performing Running Optimum Power Control (R-OPC). An encoding/decoding circuit inserts a synchronization information item to a head of only one synchronous frame when data are recorded on an opt... | 04/08/2008 |
| 7355949 | Apparatus and method for manufacturing optical disks, apparatus and method for recording data on optical disks, apparatus and method for reproducing data from optical disks, and optical disk formed with pit strings and mark strings with radial deviation features Described herewith is an optical disk manufacturing apparatus for reading recorded digital data from an optical disk, comprising an encryption unit (22, 23) for encrypting entered digital data according to a plurality of key information; an optical disk subst... | 04/08/2008 |
| 7355929 | Magneto-optical disk and recording and/or reproducing method and recording and/or reproducing apparatus using the magneto-optical disk A magneto-optical disk having a small-sized diameter and a large capacity and able to record and reproduce disk discrimination information, and a recording method and a reproducing method of the same, wherein a recording layer including a main recording region in wh... | 04/08/2008 |
| 7352673 | Recording method and recording apparatus A recording method and apparatus reduces jitter and increases the number of possible rewrites in an optical disc. When the absolute values of DSV values calculated for different DCC bits are equal, the selection of the DCC bit is carried out in a random manner, so t... | 04/01/2008 |
| 7349297 | Method and apparatus for acquiring an index mark A method and apparatus for reading an index mark pattern. The pattern may be formed on an optical disc medium. The optical disc medium may include a set of data arranged in a data field, and an index mark pattern for identifying a relative location of the data field... | 03/25/2008 |
| 7336207 | Modulation table, modulating apparatus and method, program, and recording medium A modulation table for converting data with a basic data length of m bits into a variable length code (d,k;m,n;r) is provided. The modulation table includes a basic table for converting data patterns into code patterns and a replacement table for replacing data patt... | 02/26/2008 |
| 7333033 | Modulation table, modulating device and method, program, and recording medium A modulation table configured to convert data having a basic data length of m bits into variable length code (d, k; m, n; r) is provided. The modulation table includes a maximum constraint length r>1, a minimum run of d (d>0), a maximum run of k, and a basic codewor... | 02/19/2008 |
| 7327659 | Method and apparatus for recording data on writable compact disc A method of recording data on a compact disc is provided includes modulating the data of 1 byte to p-channel bits, recording the modulated data when a minimum mark length is greater than 0.5 μm and smaller than 1.0 μm, p/q is greater than 4.5 and smaller than 8 wh... | 02/05/2008 |
| 7324423 | Data recording method recorder and data reproducing method and device The present invention is relative with a method for recording further data on a recording medium on which there re pre-recorded data obtained on modulating M-bit data to N-bit data, where M | 01/29/2008 |
| 7321531 | Apparatus for reproducing data from optical storage medium using multiple detector An apparatus includes a multiple detecting unit having n detectors, and a controller which selects one of the n detectors and controls the selected detector to output a binary signal. In the apparatus, a plurality of detectors are used to detect a signal read from a... | 01/22/2008 |
| 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 |
| 7317738 | Data transmission method for embedded data, data transmitting and reproducing apparatuses and information recording medium therefor In a data transmission method for information data containing additional information data therewith, comprising, at a transmitter side, following steps: adding error correction codes for correcting error to said additional informat... | 01/08/2008 |
| 7315685 | Method and apparatus for continuous feed of disks for recording digital video signals and authenticating the digitally recorded disks A digital signal recording apparatus a method of operating the same, used in conjunction with TV and video cameras, for example for security applications, includes a disk feeder system having a disk recorder and an upper compartment for holding fresh unrecorded disk... | 01/01/2008 |
| 7310392 | Method and apparatus for determining inter-symbol interference for estimating data dependent jitter A method and apparatus for displaying substantially noise-free segments of serial data waveforms. The method comprises the steps of dividing an acquired waveform into a plurality of waveform slices and categorizing each of the plurality of waveform slices according ... | 12/18/2007 |
| 7304932 | Data recording medium, and data recording method and device A recording method for converting m-bit data into n-bit (where n>m) bit data whose run length is restricted and recoding the converted data on a recording medium, the recording method comprising the steps of when at least preceded data is data containing a special d... | 12/04/2007 |
| 7304931 | Recording medium, optical disk apparatus and writing method Recording parameters are decided so that the time control information on at least the front edge and the rear edge of a parameter forming a mark of twice size or above of the laser spot diameter focused on the recording medium is substantially proportional to the re... | 12/04/2007 |
| 7301866 | Information reproducing apparatus and method A pit data generation circuit generates a first clock signal synchronized with pit data and a pit synchronization signal from a sum read signal obtained by reading the length of a pit. A division circuit generates a second clock signal by frequency-dividing the firs... | 11/27/2007 |
| 7298963 | Time code generator and time code generating method, time code reader and time code reading method, and video recording and reproducing apparatus The present invention provides an apparatus for generating a time code compatible with 50P, 60P or 59.94P and having interchangeability with existing time codes. The apparatus includes: a microcomputer for dividing a frame number indicated by time address data in su... | 11/20/2007 |
| 7277545 | Scrambler and scrambling method A scrambler and scrambling method. The scrambler has a random data generator which generates random data having a random data generation cycle based on a result obtained by multiplying at least a size of a first data frame by a result obtained by dividing a data amo... | 10/02/2007 |
| 7277368 | Playback method, playback control circuit and playback apparatus for a recording medium Stable playback performance is assured and data loss due to out-of-step synchronization is reduced even when playback signal quality deteriorates due to such cause as a recording medium defect. The playback method applies to a recording medium to which data is recor... | 10/02/2007 |
| 7272098 | Data recording apparatus and associated methodology of affecting a digital sum variance A recording method includes the steps of generating recording data in such a manner that, when m-bit data is converted into a data symbol of n bits (m | 09/18/2007 |
| 7272097 | Method of detecting data structure of non-return-to-zero data in an optical storage device A method of detecting a data structure of fourteen-bit data in an optical storage device includes connecting a first 8-bit register between an eight-to-fourteen modulator and a leading zero counter, storing 8 least significant bits of the data output from the eight-... | 09/18/2007 |
| 7263056 | Apparatus and methods for securing information in storage media The methods described herein are directed at securing information in storage media such as optical discs, magnetic disks or a combination thereof. In particular the methods describe embedding a first stream of data in a second stream of data by modulating the locati... | 08/28/2007 |
