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1195results about "Optical recording/reproducing/erasing methods" patented technology
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System and Method for Caching Multimedia Data
InactiveUS20100332754A1Data augmentationImprove functionalityMemory architecture accessing/allocationEnergy efficient ICTParallel computingData system
Systems and methods are provided for caching media data to thereby enhance media data read and / or write functionality and performance. A multimedia apparatus, comprises a cache buffer configured to be coupled to a storage device, wherein the cache buffer stores multimedia data, including video and audio data, read from the storage device. A cache manager coupled to the cache buffer, wherein the cache buffer is configured to cause the storage device to enter into a reduced power consumption mode when the amount of data stored in the cache buffer reaches a first level.
Owner:COREL CORP
Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system
InactiveUS6938162B1Prevent unjust digital copyingImprove reliabilityAccessories for auxillary signalsAccessories for indicating/preventing prior/unwanted useInformation processingHandling system
A recording type optical disk on which data is recordable includes a data recording and reproducing area for recording data therein and reproducing data therefrom, and a read-only disk identification information area for recording disk identification information for identifying the optical disk therein. In the optical disk, the disk identification information is formed by removing a reflection film that is formed on the optical disk in a strip shape. The disk identification information includes an inherent disk identifier for each optical disk, and the data recording and reproducing area includes an area for recording encrypted data therein. The encrypted data is encrypted by using information including the disk identification information for identifying the optical disk as a key.
Owner:PANASONIC CORP
Method of and apparatus for managing disc defects using temporary defect management information (TDFL) and temporary defect management information (TDDS), and disc having the TDFL and TDDS
ActiveUS20040076096A1Combination recordingRecord information storageComputer hardwareManagement area
A disc having an updatable defect management area used by an apparatus for managing defects on the disc, the disc including a user data area which includes user data, a spare area that is a substitute area for a defect existing in the user data area, and an area in which are recorded an address of data that is last recorded in the user data area and an address of a replacement data recorded in the spare area. Accordingly, the disc defect management method and apparatus are applicable to a recordable disc such as a write-once disc while effectively using a defect management area of the disc.
Owner:SAMSUNG ELECTRONICS CO LTD
Multi-layered information recording medium, recording apparatus, and recording method
ActiveUS7184377B2Effective areaEasy accessFilamentary/web record carriersOptical beam sourcesComputer hardwareRadial position
A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.
Owner:PANASONIC CORP
Multimedia optical disk, reproduction apparatus and method for achieving variable scene development based on interactive control
InactiveUS6185365B1Efficient reproductionTelevision system detailsColor television signals processingData storingData store
A multimedia optical disk is provided. The multimedia optical disk includes a data area for storing objects which include moving picture data and at least one of audio data and sub-picture data. The multimedia optical disk also includes an index area for storing reproduction orders of the objects. Route information in the index area includes a sequence of addresses of objects whose alignment represents a reproduction order. Chain control information in the index area corresponds to the route information. The chain control information, being effective in reproducing objects specified by the alignment of the sequence of addresses (objects specified by the alignment of the sequence of addresses are called a chain), instructs the reproduction apparatus to have a navigation control of the chain. A piece of moving picture data having a certain time period is reproduced at the same timing as a piece of audio data and a piece of sub-picture data. A piece of sub-control information, being effective in reproducing moving picture data, sub-picture data, and audio data stored in a small unit instructs the reproduction apparatus to have a navigation control of the data stored in the same small unit.
Owner:PANASONIC CORP
Write-once optical disc, and method and apparatus for recording management information on write-once optical disc
ActiveUS7233550B2Disc-shaped record carriersFilamentary/web record carriersComputer hardwareOptical recording
A write-once optical recording medium, and a method and apparatus for recording management information on the recording medium are provided. The method includes recording, in a temporary defect management area (TDMA), management information produced while the recording medium is in use, and transferring and recording the latest management information of the TDMA in a final defect management area (DMA) of the recording medium at a DMA fill-in stage of the recording medium.
Owner:LG ELECTRONICS INC
Multi-layered information recording medium with spare defect management areas
ActiveUS7123556B2Shorten the timeEfficient managementInput/output to record carriersFilamentary/web record carriersComputer hardwareRecording layer
A multi-layered information recording medium comprising a plurality of recording layers, a user data area for recording user data, provided in at least two of the plurality of recording layers, and a defect list storing area for storing a defect list. When at least one defective area is detected in the user data area, the defect list is used to manage the at least one defective area.
Owner:PANASONIC CORP
Machine readable recording medium, reproduction apparatus and method for controlling selection of menu items within a video object
InactiveUS6226446B1Efficient reproductionTelevision system detailsColor television signals processingControl selectionData storing
Owner:PANASONIC CORP
Optical disk for high resolution and three-dimensional video recording, optical disk reproduction apparatus, and optical disk recording apparatus
InactiveUS20030108341A1Precise positioningWithout any changeTelevision system detailsTelevision system scanning detailsImage resolutionImage segmentation
The present invention has an objective of providing an optical disk having a high resolution picture and a system for reproducing data on the optical disk, which are compatible with a conventional system for reproducing an ordinary resolution picture. A high resolution signal is divided into a main signal and a sub signal by picture division means and MPEG-encoded. The main signal and the sub signal are divided into frames each having 1 GOP or more. The resultant first interleave block 54 and second interleave block 55 are recorded alternately on an optical disk. A high resolution reproduction apparatus reproduced both the first and second interleave blocks, so that a high resolution picture is obtained. A non-high resolution reproduction apparatus reproduces only the first or second interleave block, so that an ordinary resolution picture.
Owner:PANASONIC CORP
Mutli-layered information recording medium, reproduction apparatus, recording apparatus, reproduction method, and recording method
InactiveUS20060195719A1Shorten the timeEfficient managementInput/output to record carriersFilamentary/web record carriersComputer hardwareRecording layer
A multi-layered information recording medium comprising a plurality of recording layers, a user data area for recording user data, provided in at least two of the plurality of recording layers, and a defect list storing area for storing a defect list. When at least one defective area is detected in the user data area, the defect list is used to manage the at least one defective area.
Owner:PANASONIC CORP
Method and apparatus for retry calculation in an optical disk device
A method for determining a maximum number of attempted retry operations when a read error occurs in an optical disk device. The method includes the steps of receiving an RF signal from a pickup of the optical disk device, detecting an envelope of the RF signal, asserting a defect signal when a level of the envelope is lower than a predetermined threshold, generating interrupt pulses during the assertion of the defect signal, and determining the maximum number of attempted retry operations using the interrupt pulses.
Owner:TIAN HLDG LLC
Memory device
ActiveUS20090006725A1Memory architecture accessing/allocationMemory loss protectionOperating systemStorage cell
A memory device includes a nonvolatile memory and a controller. The nonvolatile memory includes a storage area having a plurality of memory blocks each including a plurality of nonvolatile memory cells, and a buffer including a plurality of nonvolatile memory cells and configured to temporarily store data, and in which data is erased for each block. If a size of write data related to one write command is not more than a predetermined size, the controller writes the write data to the buffer.
Owner:KIOXIA CORP
Optical disk identification device
The present invention provides an optical disk identification device for use in an optical disk reproduction apparatus for reproducing a plurality of types of optical disks based on information recorded on the optical disks. Recorded information is reproduced from an optical disk 1 while an optical pickup 3 is fixed at a focal position Pf. A focal position detector 32 generates a focal position detection signal Sg that is either at a high level or at a low level at the focal position Pf based on reproduced signals Sa, Sb, Sc, Sd. An RF signal detector 20 detects an RF signal Srf from the reproduced signal based on the focal position detection signal Sg. A recording density identifier 31, S14, S20 identifies the recording density of the optical disk based on the RF signal. A format identifier S16 to S24 identifies the type of the optical disk based on the detected recording density.
Owner:PANASONIC CORP
Storage media access control method and system
InactiveUS20050050343A1Limit installationAvoid accessUser identity/authority verificationAccessories for indicating/preventing prior/unwanted useMedia access controlOptical medium
A method and apparatus for controlling access to a storage medium, such as an optically readable medium. Light sensitive or other materials that are adapted to change state and affect reading of a storage medium are used to control access to data that may be stored on optical medium and / or to control use of the medium.
Owner:SELINFREUND RICHARD H +4
System and method for embedding optical drive compatibility information in optical media
ActiveUS7391694B2Reduce disadvantagesReduce problemsCombination recordingRecord information storageFirmware versionComputer compatibility
Compatibility information embedded in an optical medium modifies actions allowed by predetermined non-compatible optical disc drives on the optical medium, such as optical disc drives that may suffer damage if certain actions are performed on the optical medium. For instance, a compatibility engine of the optical disc drive applies compatibility information read from an optical medium to determine restrictions to impose on the use of the optical medium, such as restricting the optical disc drive from writing to the optical medium, reading from the optical medium or performing any operations until an update to the optical disc drive firmware is performed either automatically or by display of a compatibility user interface at an information handling system associated with the optical disc drive. In one embodiment, the compatibility information identifies incompatible optical disc drives and firmware versions by unique identifiers.
Owner:HEWLETT PACKARD DEV CO LP +2
Information record medium having first and second recording layers in which mid areas are recorded respectively, and apparatus for recording the same
InactiveUS7295762B2Improve tracking performanceShorten speedMultilayered discsTelevision system detailsRecording layerComputer science
An information record medium is provided with a first recording layer on which a data group is recorded, and a second recording layer on which a data group is recorded. On the first recording layer, a lead-in area, management information for the whole of recording information, and the data group are recorded. On the second recording layer, a lead-out area and a data group are recorded. The lead-in area is recorded at the inner radius side of the information record medium. The lead-out area is recorded at the inner radius side of the information record medium. The medium is further provided with a mid area at the outer radius side of the first recording layer, and the other mid area at the outer radius side of the second recording layer.
Owner:PIONEER CORP
Information recording medium, information recording apparatus and method, information reproducing apparatus and method, information recording/reproducing apparatus and method, recording or reproduction control computer program, and data structure containing control signal
ActiveUS20050120049A1Efficiently record one or a plurality of titlesEasy to copyTelevision system detailsDigital data processing detailsComputer hardwareControl signal
An information recording medium includes an object data file for storing object data as a series of content information such as video information and audio information and play list information file for storing play list information defining a reproduction sequence on play list basis. Furthermore, the medium includes a disc information file for storing a plurality of title play lists each containing information specifying play list information defining a play list to be reproduced, pre-command information and post-command information specifying commands to be executed before and after a reproduction, respectively, according to the play list information.
Owner:PIONEER CORP
Optical recording medium
InactiveUS20050100704A1Increase line speedGood light stabilityLayered productsRecord information storagePhoto stabilityOptical recording
An optical recording medium can be recorded at a high linear velocity of at least 10 m / s while maintaining an excellent light stability and favorable reflectance. A recording medium is constructed of a recording layer on a substrate, the recording layer including a first dye with a maximum absorption wavelength in a thin-film state of 450 nm to 620 nm inclusive as a first dye and being formed so as to include a second dye with an extinction coefficient of at least 0.5 for a recording wavelength. In this case, it is preferable for the second dye to have a maximum absorption wavelength of 620 nm to 750 nm inclusive in a thin-film state.
Owner:TDK CORPARATION
Three-dimensional recording and reproducing apparatus
ActiveUS7286153B1Information stabilityStable reproductionRecording apparatusInking apparatusHigh densityOptical axis
In a three-dimensional recording and reproducing apparatus having a recording medium including a plurality of recording layers stacked on a substrate and an optical system for converging a light irradiated from the substrate side on each of the plurality of recording layers to three-dimensionally record and reproduce information, the following equation is satisfied:λ / 4≦(1 / 8NB)(1 / NB2−1)NAF4Δd whereλ: Wavelength of the light;NB: Refractivity of the substrate 3; NAF: Numerical aperture of a focus lens 8 for converging a light;Δd: Positional range in the optical axis direction in which exists a recording layer on which the light is to be converged.A light spot is focused on each layer of the multi-layer structured disc to record and reproduce highly reliable data in a high density.
Owner:HITACHI CONSUMER ELECTRONICS CORP
Optical disc device and optical disc discriminating method
InactiveUS6147941AReliable reproductionOptical discsRecord information storageLaser lightLaser beams
An optical disc device includes a laser light source for radiating a laser light beam illuminated via an objective lens on a signal surface of an optical disc, a return light detection unit for detecting the reflected light radiated from the laser light source and reflected from the signal surface of the optical disc, a disc discriminating unit for discriminating the type of the optical disc based on a detection output of the return light detection unit, a unit for detecting tracking error signals of plural different types of different detection systems based on the detection output of the return light detection unit, a tracking unit for displacing the objective lens along the radius of the optical disc responsive to the tracking error signals for tracking-controlling a laser spot of the laser light focussed on the signal surface of the optical disc and a controlling unit for switching the detection system based on a discriminating output by the disc discriminating unit for selecting one of the plural types of the tracking error signals responsive to the types of the optical discs.
Owner:SONY CORP
Recording medium, recording apparatus, reproduction apparatus, recording method and reproduction method
InactiveUS20060044979A1Improve efficiencyImprove performanceFilamentary/web record carriersRecord information storageComputer hardwareRecording media
In a write-once media, by using a selected area such as an area starting from a postscript-recording point in the main data area as an alternate area, by determining whether or not an address specified in a request such as a write request is an address at which data has been recorded on the basis of information on a sequential recording range and by recording pieces of alternate-address management information for replacing defective locations on the media and for renewing data recorded on the media in a table by letting the pieces of information coexist in the table, defective locations on the media can be replaced with other locations and data already recorded on the media can thus be renewed even without providing pre-allocated alternate area on the media. In addition, if the media is provided with an alternate area and the alternate area becomes insufficient for alternate-address processing, a selected region in the main data area can be used as a region supplementary to the insufficient alternate area. An example of the region is an area starting from a postscript-recording point mentioned above.
Owner:SONY CORP
Information recording medium evaluation method, information recording medium, method for manufacturing information recording medium, signal processing method and access control apparatus
InactiveUS20080159104A1Improve read performanceQuality of the read signal can be rated appropriatelyModification of read/write signalsRecord information storageComputer scienceSignal processing
A method for rating an information recording medium according to the present invention includes the steps of: receiving a digital read signal, which has been generated based on an analog read signal representing information that has been read from the information recording medium, and shaping the waveform of the digital read signal; subjecting the shaped digital read signal to maximum likelihood decoding, thereby generating a binarized signal showing a result of the maximum likelihood decoding; and calculating the quality of the digital read signal based on the shaped digital read signal and the binarized signal. If the quality of the read signal is calculated by a PRML method in which a number of zero-cross portions are included in a merging path of a minimum difference metric, the quality is calculated by using only a state transition pattern in which only one zero-cross portion is included in a merging path of a non-minimum difference metric.
Owner:PANASONIC CORP
Recording apparatus, recording method, and disc shaped record medium
InactiveUS6871205B1Easy to implementEasy searchTelevision system detailsDigital data processing detailsDigital recordingOperation mode
A digital recording apparatus using a disc shaped record medium is disclosed, that comprises a means for extracting outlined information of each of a plurality of files recorded on the disc shaped record medium, a means for correlating the extracted outlined information and the plurality of files and generating an index file, and a means for recording the index file to a predetermined position of the disc shaped record medium, wherein when a predetermined operation mode is performed, a plurality of types of data of the plurality of files are output in a predetermined format.
Owner:SONY CORP
Optical Disc, Optical Disc Driving Apparatus, Optical Disc Driving Method, Data Processing Apparatus, and Optical Disc Recording/Reproducing Apparatus
By avoiding the problem that in a hybrid optical disc with a standard-density recording area and a high-density recording area, an optical pickup designed to be suitable for the standard-density recording area cannot operate as desired in the high-density recording area and may cause a malfunction, damage to the disc drive or optical disc is prevented and optimal control is enabled. Access operation identification information such as reproducing identification information 225 indicating whether or not information recorded in the user data area 222 of the optical disc can be reproduced under the reproducing conditions of the optical disc driving apparatus is recorded in the lead-in area 222. The optical disc driving apparatus reads this type of access operation identification information, compares it with access operation identification information possessed by the optical disc driving apparatus, and if they do not correspond, does not carry out access operations by the optical head to the user data area 222, because reproducing or recording compatibility with the optical disc 201 is lacking.
Owner:MITSUBISHI ELECTRIC CORP
Apparatus and method for recording data onto a predetermined recording medium
In an operation to record information played back from a first recording medium into a second recording medium, control is executed to permit or prohibit the operation to record (dub or copy) the information into the second recording medium on the basis of a judgment as to whether the first recording medium is a recording medium that is permitted to be dubbed or prohibited from being dubbed. The control can be executed to permit or prohibit the operation to copy the information in accordance with the type of the first recording medium.
Owner:SONY CORP
Secure digital video disk and player
InactiveUS6842522B1Easy and inexpensive implementationTelevision system detailsInformation arrangementDigital videoShift register
A method for recoding data on an optical medium such as DVD. The method includes receiving main data from a data source, determining a plurality of data frame values in response to the main data, inverting at least one selected bit in at least one of the data frame values to generate a plurality of encoded data frames, scrambling the encoded data frames by a feedback shift register to generate scrambled data frames, generating ECC values in response to the scrambled data frames, adding the ECC values to the scrambled data frames to generate an ECC block, rearranging the ECC block to generate a plurality of recording frames, encoding the recording frame by an eight-to-sixteen modulation (ESM) encoder to generate code words, adding sync values to the code words to generate a plurality of physical sectors, and recording the physical sectors on the optical medium. There is a complementary method for reading and decoding data from an optical medium.
Owner:MACROVISION CORP
Method of and apparatus for managing disc defects using temporary defect management information (TDFL) and temporary defect management information (TDDS), and disc having the TDFL and TDDS
ActiveUS20050128904A1Combination recordingFilamentary/web record carriersComputer hardwareManagement area
A disc having an updatable defect management area used by an apparatus for managing defects on the disc, the disc including a user data area which includes user data, a spare area that is a substitute area for a defect existing in the user data area, and an area in which are recorded an address of data that is last recorded in the user data area and an address of a replacement data recorded in the spare area. Accordingly, the disc defect management method and apparatus are applicable to a recordable disc such as a write-once disc while effectively using a defect management area of the disc.
Owner:SAMSUNG ELECTRONICS CO LTD
Recording medium, recording apparatus, and reading apparatus
InactiveUS20010053114A1Easily and precisely determineMaintain compatibilityTelevision system detailsRecord information storageComputer hardwareMoment of inertia
Within a sub-code to be recorded in a recording medium, the physical characteristics of the recording medium are recorded. This enables a recording apparatus or a reading apparatus to easily and correctly determine the physical characteristics of the recording medium by reading the sub-code. The physical characteristic information includes information concerning the material, the disc type, the linear velocity, the track pitch, the moment of inertia, and the size / configuration of the recording medium. It is thus possible to easily and correctly determine the physical characteristics of the disc (or unit area) while maintaining the compatibility with known recording media.
Owner:SONY CORP
Copy protection for optical discs
InactiveUS20020076046A1Information arrangementDigital data processing detailsComputer hardwareCopy protection
A method of copy protecting optical discs uses the differences in capability between the encoder associated with a laser beam recorder and that in currently available CD writers. Digital sum value (DSV) is a property of the encoded data on CODs and an encoder, which controls a laser beam recorder may be able to choose a pattern of merge bits which result in the overall DSV having optimal properties. During mastering of a CD, data patterns are added to the disc to provide an authenticating signature. These data patterns are chosen to cause DSV problems. Currently available CD writers have been found to have difficulty writing an authenticating signature of the type described without producing a resulting CD which has severe readability problems. Thus, the copy disc written by the CD writer will result in a CD reader returning corrupted data or information signalling a read error.
Owner:ROVI EURO LTD
Information storage medium having super resolution structure and apparatus for recording to and/or reproducing from the same
InactiveUS20050254408A1Reduce reproductionLayered productsPhotomechanical apparatusImage resolutionLight beam
A super-resolution information storage medium having recording marks or pits that are smaller than the resolution limit of a beam incident from an information recording and / or reproducing apparatus, and the information recording and / or reproducing apparatus. The information storage medium includes a substrate and at least one super-resolution reproduction layer containing a super-resolution material and a high melting point material with a melting point higher than that of the super-resolution material formed on the substrate. The high melting point material suppresses movement of the super-resolution material in a melted phase so as to prevent signal degradation caused by repeated reproduction.
Owner:SAMSUNG ELECTRONICS CO LTD
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