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| Number | Title | Issue Date |
| 8059499 | Drive signal generating apparatus and drawing apparatus Provided is a drive signal generating apparatus including: an arithmetic section that calculates an approximate expression to approximate variations of multiple detected values each representing one of a position of an optical pickup section and an amount of positio... | 11/15/2011 |
| 7957228 | Information recording device and method, and computer program An information recording apparatus (1) is provided with: a first judging device (191) for judging whether or not a tracking error signal is greater than or equal to a first threshold value; a detecting device (192) for detecting, as a detection ... | 06/07/2011 |
| 7839729 | Optical drive servo with a servo processor receiving photodetector signals An optical disk drive is provided that includes: a plurality of photodetectors for receiving reflected light from an optical disk, each photodetector providing a photodetector output signal; an analog-to-digital converter for converting versions of the photodetector... | 11/23/2010 |
| 7760590 | Data recording method, data recording apparatus, and data recording program A data recording method is disclosed which includes the steps of: firstly recording audio data onto a temporary storage medium following retrieval of the audio data from an external storage medium in response to an audio data import request; detecting whether a lead... | 07/20/2010 |
| 7356708 | Decryption semiconductor circuit A semiconductor integrated circuit having a plurality of selectable pathways inter-connected to data sources and data destinations; a cryptographic circuit connected to the selectable pathways to selectively receive data from at least one of the data sources, to dec... | 04/08/2008 |
| 7315492 | Header mask signal generating track jump method for a recording medium A track jump method for an optical recording/reproducing medium is provided. In the track jump method, once a track jump command is input, a track jump operation is held until a falling edge of a header mask signal is detected. The track jump starts at the falling e... | 01/01/2008 |
| 7301857 | Media player including a resume function A method and arrangement remembers a last-played position of a recorded medium by associating an identification number with the medium and storing therewith in memory a last-play position of the medium. The identification number of the recorded medium is analyzed af... | 11/27/2007 |
| 7301889 | Optical disc An optical disc having track grooves formed in a radial direction of the disc, and with the disc being divided into a plurality of zones, wherein track grooves are formatted into waved patterns, based on a predetermined modulation rule, in the radial direction of th... | 11/27/2007 |
| 7274789 | Information recording/reproducing apparatus with security measure When data are to be recorded on a recording medium having imparted thereto a medium ID that is identification information unique to the recording medium, an additional ID related to the medium ID is generated on the basis of the medium ID. Then, the data are encrypt... | 09/25/2007 |
| 7251201 | Method of searching new writable address for optical recordable medium A method of searching a new writable address (NWA) for an optical recordable medium includes providing an optical pickup head and setting a first search starting point thereof; determining if NWA is located at the latest track and setting a search finishing point of... | 07/31/2007 |
| 7248541 | Optical disk device and access method for optical disk device An optical disk device has a recording information management portion which detects a distribution of a recorded region R and an unrecorded region M based on reflection light received by an optical head and an access target setting circuit which determines an access... | 07/24/2007 |
| 7233552 | Optical disk device capable of recording information data according to ZCLV format An optical disk device for recording data in an optical disk under ZCLV control is provided. The optical disk device divides the optical disk into a plurality of zones, and drives said optical disk at a linear velocity fixed in each zone but varied among the zones. ... | 06/19/2007 |
| 7213752 | Method of preventing TOC reading error in a multi-session disc A method for preventing a TOC reading error in a multi-session disc includes determining a range of absolute time of a specific session, when a plurality of Q codes, each of which has a value in a “POINT” item not equal to B0, are read, determining whethe... | 05/08/2007 |
| 7193935 | Method and apparatus for controlling positioning of a pickup A disc drive to control a home-in mode and method thereof includes a pickup unit irradiating a light beam on a disc loaded in the disc drive, a motor moving the pickup unit along a radius direction of the disc, and a control unit detecting and storing position infor... | 03/20/2007 |
| 7177857 | Apparatus and method for creating distribution content A distribution content provided with conditions that are only effective to part of a content body is created. On a time axis, a section of a content body is specified. Management data is then created which indicates use conditions that are only effective to the spec... | 02/13/2007 |
| 7173886 | Track jump method for dual-layered optical disk reading device A method is disclosed for jumping tracks on a double-layer optical disk from a first address A on a first data layer to a target address D on a second data layer. According to the method, the first address A where the optical head is currently positioned is read. Th... | 02/06/2007 |
| 7145838 | Method and apparatus for performing target search on optical storage disc An optical storage disc stores storage information and includes track information. A method for performing a target search on the optical storage disc includes: generating a first intermediate signal according to a readout signal generated by an optical storage devi... | 12/05/2006 |
| 7110330 | Method of providing sub-code data of optical disc drive to host computer A sub-code providing method that provides correct sub-code data when sub-code data is requested from a host when a reproduction mode is performed in an optical disc drive. In a method providing sub-code data to a host computer in an optical disc drive formed so that... | 09/19/2006 |
| 7110544 | Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical di... | 09/19/2006 |
| 7099241 | Apparatus for scanning optical recording media An apparatus for reading and/or writing data markings of an optical recording medium having data markings arranged along a track and header markings arranged laterally offset with respect to the center of the track, the apparatus having a header identification unit.... | 08/29/2006 |
| 7088459 | Method and system for providing a copy of a printed page A method for providing a copy of a page from a printed document, the document including coded data indicative of an identity of the document and of a plurality of reference points on the document, the method including: receiving, in a computer system, indicating dat... | 08/08/2006 |
| 7075862 | Recording apparatus for optical recording medium A recording apparatus for a write-once and/or re-recordable optical recording medium includes a discriminator for discriminating a recording position information from the optical recording medium; a detector for detecting a deviation between the address information ... | 07/11/2006 |
| 7075881 | Signal recording/playback apparatus, and recording compensation method and playback method used therefor A signal recording/playback apparatus includes a recording data converter. The recording data converter converts on a data pattern having a large influence on adjacent tracks on an optical disk, and outputs the converted data to an optical pickup. Specifically, by p... | 07/11/2006 |
| 7069092 | Digital audio signal filtering mechanism and method Essentially all of the processing parameters which control processing of a source audio signal to produce an encoded audio signal are stored in an audio processing profile. Multiple audio processing profiles are stored in a processing profile database such that spec... | 06/27/2006 |
| 7065007 | Method and a playback device for performing a track slip A method for performing a track skip and a playback device for optical storage disks enable an accelerated track skip in the case of a non-moving storage disk in which a time is determined for the track skip of a read device between a current track and a selected tr... | 06/20/2006 |
| 7016268 | Optical reproducing system having resume function based on recording time of each program on the medium A record medium playback apparatus includes a playback section and a playback control section. The playback control section is adapted to control a playback start position of the program information when the record medium playback apparatus is restarted after power ... | 03/21/2006 |
| 7016133 | Systems for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness Systems are provided for improving servo-demodulation robustness. Multiple occurrences of a SAM pattern are searched for in a single servo wedge. Each detection of the SAM pattern in the servo wedge is charactered as a good SAM detection or a bad SAM detection. If m... | 03/21/2006 |
| 7012861 | Track jump method for a recording medium A track jump method for an optical recording/reproducing medium is provided. In the track jump method, once a track jump command is input, a track jump operation is held until a falling edge of a header mask signal is detected. The track jump starts at the falling e... | 03/14/2006 |
| 7006311 | Systems for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness Systems are provided for improving servo-demodulation robustness. The SAM pattern is searched for in a servo wedge. If the SAM pattern is detected in the first servo wedge, a determination is made whether to characterize the detection of the SAM pattern as either a ... | 02/28/2006 |
| 7006312 | Methods for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness Methods are provided for improving servo-demodulation robustness. A SAM pattern is searched for in a servo wedge. If the SAM pattern is detected in the first servo wedge, a determination is made whether to characterize the detection of the SAM pattern as either a go... | 02/28/2006 |
| 6985415 | Offset setting system and method for seeking control The invention is an offset setting system for an optical reading/writing apparatus having an optical pickup head reading/writing digital data under a predetermined velocity on an optical storage media. The apparatus sets the offset including a plurality of buffer bl... | 01/10/2006 |
| 6982935 | Pause control for a media player with a movable pickup A method and apparatus for suspending the operation of a rotating optical media player that uses simplified and efficient logic circuitry is described. When an operator initiates a pause operation, for example, by pressing a pause key, the current location of an opt... | 01/03/2006 |
| 6917569 | Method for determining seek times in a disk array storage device Optimizing performance of physical disk drives in a disk array storage device with a plurality of logical volumes is accomplished by accumulating statistics over an interval to select two logical volumes for an exchange. After testing to determine any adverse effect... | 07/12/2005 |
| 6813224 | Method and apparatus for reading and/or writing a data disk A method and an apparatus for reading and/or writing data on a disk (1) storing data in a continuous spiral form (2). The data is simultaneously read from or written to N tracks (4-8, 12-20) by N spots, N being an integer larger than or equal to... | 11/02/2004 |
| 6757391 | OPTICAL DISK, AN OPTICAL DISK BARCODE FORMING METHOD, AN OPTICAL DISK REPRODUCTION APPARATUS, A MARKING FORMING APPARATUS, A METHOD OF FORMING A LASER MARKING ON A OPTICAL DISK, AND A METHOD OF MANUFACTURING AN OPTICAL DISK Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical di... | 06/29/2004 |
| 6661749 | Substrate for optical recording medium, optical recording medium, master disc, master disc recording apparatus, and signal generating apparatus A substrate for an optical recording medium, includes recording tracks formed in guide grooves on a disc; and an address section having an address pit sequence formed between the recording tracks in the guide grooves along an information reading direct... | 12/09/2003 |
| 6657947 | Information recording medium and error detecting method An information recording medium has such error detecting codes that the distance between the codes of adjacent tracks of the medium is always 1. The bits E1 -Em of the detecting codes, which are included by pre-format information, ar... | 12/02/2003 |
| 6654317 | Method and apparatus for reproducing information A method for reproducing information, comprising the steps of: reading compressed audio data from an information recording medium in which the compressed audio data is recorded in a frame unit; and subjecting the compressed audio data thus read to an expa... | 11/25/2003 |
| 6633516 | ZCAV optical and method for accessing thereof Pieces of address information are recorded on an optical disc such that they are successively continuous addresses within each zone but discontinuous at a beginning of a zone next to the previous zone, and an address after repeating the addresses of the p... | 10/14/2003 |
| 6628575 | Track jump method for ZCAV system and storage apparatus employing ZCAV system A storage apparatus has a function of jumping to an arbitrary track on a recording medium in response to a track jump request when making access to the recording medium, where the recording medium is divided into a plurality of zones in a radial direction... | 09/30/2003 |
