53results about "Optical recording systems" patented technology

To provide a magnetic tape cartridge, a cartridge management system, a reading method, and a program enabling accurately reading an identifier.SOLUTION: A magnetic tape cartridge includes a case on which an identifier is displayed, and a storage medium in which reading condition information that is information regarding a condition for reading the identifier is stored.SELECTED DRAWING: Figure 8

A magnetic disk device capable of improving data recording performance is provided. The magnetic disk device includes: a magnetic disk; a magnetic head; a power supply unit that supplies power to the magnetic head; a control unit that controls reading and writing data from the magnetic disk and, when writing data, suppresses the magnetic field range of the write head based on the offset of the write head; and an address storage unit that stores the address of the magnetic disk where data was written with the magnetic field range suppressed. The control unit reads data from the magnetic disk using the read head at a predetermined timing based on the address stored in the address storage unit, and writes the read data to the magnetic disk using the write head without suppressing the magnetic field range.

The present application relates to the technical field of data storage backup, and especially relates to a method for seamlessly recording audio and video based on a double-disc embedded system. Step S1, cache the audio and video information to be recorded; Step S2, load disc A; Step S3, record; Step S4, periodically detect the memory occupation ratio and adjust the corresponding parameters to the corresponding values; Step S5, continue recording disc B and calculate the audio information similarity of disc A, and adjust the corresponding running parameters of the recording unit to the corresponding values during the recording process of disc B according to the similarity; Step S6, send a termination signal to complete the recording. Compared with the prior art, the present application has the beneficial effect that during the recording process of disc A, the central control unit periodically detects the memory occupation ratio in disc A, and adjusts the corresponding parameters to the corresponding values according to the detection results, thereby ensuring the completeness of the recorded data and the recording effect.

A data protector according to an embodiment of the present disclosure includes: a data layer configured to record confidential information as a visible image; and one or a plurality of cover layers disposed at least one of above or below the data layer and configured to transition between a color-developed state and a decolored state in a visible wavelength region.

A drawing apparatus according to an aspect of the present disclosure includes a light source section and a scanning section. The scanning section irradiates a surface of the recording medium with a plurality of laser beams generated by the light source section. The light source section generates at least one laser beam among the plurality of laser beams to cause a beam shape of each of the laser beams at a position of the recording medium to satisfy a relational expression below, and to cause a length of the beam shape in a direction parallel to a scanning direction of the laser beams to be 0 degrees or more and 20 degrees or less with respect to the scanning direction of the laser beams: Ly×1.1≤Lx<Ly×5.0 d×0.8≤Ly≤d×1.3 Lx: Length of the beam shape in a direction parallel to the scanning direction of the laser beams Ly: Length of the beam shape in a direction orthogonal to the scanning direction of the laser beams d: Pixel size.

The invention relates to law enforcement integrated management hardware and a management process. The law enforcement integrated management hardware comprises a server, a local machine, a database, a display, a processor and input equipment, the platform comprises a screen capture module, a statistical column module, an analysis column module, an evaluation column module, a sunshine police service disclosure module, an airing column module, a business training module, a data mining module, a supervision and management module, a comprehensive query module, a video retrieval module, a role management module and a large-screen data analysis and display module.

A method of writing voxels to a substrate using a laser writing system includes forming a first voxel at a first location in a substrate using a first laser pulse; detecting light emitted or scattered by the substrate due to the formation of the first voxel; determining whether the detected light satisfies a predetermined constraint; and adjusting the amplitude of the second laser pulse when the detected light does not satisfy the predetermined constraint. As a result of forming the voxel, light emission or scattering from the substrate is related to a property of the formed voxel. By monitoring such emission or scattering, changes in performance of the laser write system can be compensated. A laser writing system and a computer program product implementing the method are also provided herein.

The invention discloses a photoinduced fluorescence enhanced vinyl ether compound as well as a preparation method and application thereof. The vinyl ether compound comprises a sulfuryl vinyl ether compound, a carbon-based vinyl ether compound and an ester-based vinyl ether compound, the vinyl ether compound is subjected to photochemical rearrangement under the irradiation of 254 nm ultraviolet light to generate a planar fused ring structure, and the fluorescence intensity is greatly improved. Through substituent group regulation and control, accurate adjustment of emission wavelength can be realized. The synthesis method is based on click reaction of phenolic monomers and activated alkyne, and the process is simple and efficient. The molecules still keep photoresponsiveness in a solid film (such as a PMMA substrate), are successfully applied to a mask-assisted information input and erasing system, and provide a new technical scheme for the fields of anti-counterfeiting and information storage.

To provide a holographic data storage system and a method of exposing an area to a pattern over a sufficient sustaining duration (depending on an output of a beam).SOLUTION: In a method of performing a write operation in a holographic data storage system, a scheduler schedules at least one write operation across several discontinuous write intervals, and, in each of the discontinuous write intervals, a plurality of discontinuous write intervals, in which a region of a holographic recording medium is exposed to an interference pattern resulting from interference between a reference beam and an input beam carrying a set of data has a total duration sufficiently long to cause a sustained state change in the exposed region, thereby the set of data can be recovered from the region by the end of the last write interval of the plurality of discontinuous write intervals.SELECTED DRAWING: Figure 8A

The present invention relates to a method of storing a digital audio signal in a hybrid format and to a method of reading out analog audio information, enhanced analog audio information or digital audio information from a digital audio signal in a hybrid analog digital format.

A method of recording data on an optical data carrier in the form of a rewindable tape containing a recordable layer, comprising a step of applying data symbols to the recordable layer by creating voxels with a locally changed refractive index by subjecting the recordable layer to the impact of electromagnetic radiation pulses from a pulsed focused source of radiation directed to the tape being rewound. The step of applying comprises focusing radiation within the volume of the recordable layer of the tape (100, 600, 800, 900), in voxels (110), located entirely below the surface of the recordable layer, having a size less than or equal to 1 μm a tape (100, 600, 800, 900). An optical data carrier according to the invention has a form of a tape (100, 600, 800, 900) having a recordable layer made of a material containing glass. The recordable layer also is a substrate layer. The tape and has thickness (H) ranging from 5 μm to 100 μm, width (W) ranging from 5 mm to 50 mm and length (L) of at least 100 m.

The application discloses a method for accurately performing high-resolution recording on a high-density track, S11: obtaining to-be-recorded data in a multi-ary form; S12: extracting a plurality of combination models; S13: recording the plurality of combination models on an optical disc to obtain first distortion data; S14: performing a recording compensation operation based on the first distortion data to obtain a plurality of mark correction amounts; S21: for each combination model, using a corresponding mark correction amount to perform compensation to obtain compensation data; and S22: based on a segmented laser control strategy, recording the compensation data on the optical disc in high resolution. The application obtains distortion data that may occur during actual recording in advance, performs a recording compensation operation based on the distortion data to obtain mark correction amounts, so that during the formal recording stage, when a corresponding combination model is recorded, the combination model is compensated using a mark correction amount corresponding to the combination model, and the compensation data is recorded using a segmented laser control strategy, so that heat interference between adjacent data bits is avoided, and the output data during playing is consistent with the actually recorded data, and distortion does not exist.

The recording medium according to one embodiment of the present disclosure is provided with a recording layer. The recording layer includes: an aliphatic polymer; and a multiphoton absorption compound that has a multiphoton absorption property and that includes at least one selected from the group consisting of a carbon-carbon double bond, a carbon-nitrogen double bond, and a carbon-carbon triple bond. When the thickness of the recording layer is 100 μm, the transmittance of the recording layer in the thickness direction for light having a wavelength of 405 nm is 80% or more.

A method of performing a write operation in a holographic data storage system is provided. A scheduler schedules at least one write operation across multiple non-contiguous write intervals, the write operation pertaining to data to be stored in a region of a holographic recording medium. The scheduler uses an energy estimation function, for estimating an amount of energy required to complete the at least one write operation, to perform said scheduling. In each of the non-contiguous write intervals, the region of the holographic recording medium is exposed to an interference pattern caused by interference between a reference beam and an input beam carrying the data. The multiple non-contiguous write intervals have a total aggregate duration of sufficient length to cause a persistent state change in the exposed region, such that the data is recoverable from that region within a final write interval of the multiple non-contiguous write intervals.

The purpose of the present invention is to provide a glass substrate for data recording that achieves both processability and long-term storability. The present disclosure relates to a glass substrate which is for data recording and to the inside of which information can be written with a laser, said glass substrate comprising a first main surface and a second main surface opposite from the first main surface, wherein: an outer peripheral end surface that constitutes the outer periphery of the glass substrate is formed between the first main surface and the second main surface; the thickness of the glass substrate is 0.3-5.0 mm; the glass substrate has a glass composition that contains, in molar percentages based on oxides, 55-88 mol% of SiO2, 0-25 mol% of Al2O3, 0-30 mol% of B2O3, 0-25 mol% of an alkali metal oxide, and 0-25 mol% of an alkaline earth metal oxide; and in a region from the first main surface of the glass substrate to a depth of 0.1 μm, the concentration of sodium ions as measured by time-of-flight secondary ion mass spectrometry (TOF-SIMS) is not more than 9,000 ppm.

A data protector according to an embodiment of the present disclosure includes: a data layer configured to record confidential information as a visible image; and one or a plurality of cover layers disposed at least one of above or below the data layer and configured to transition between a color-developed state and a decolored state in a visible wavelength region.

This invention discloses an optical storage method based on a high-speed recording system using a rotating mirror. The method, implemented using a high-speed recording system, includes: 1. Encoding the data to be stored, including data information and recording coordinates, to obtain a corresponding binary code; 2. Adjusting the binary code to obtain a storage code; 3. Calibrating a high-speed digital output card and determining the recording substrate surface; 4. Generating corresponding light intensity waveform data based on the storage code and storing it in the calibrated high-speed digital output card; 5. Calibrating the optical spherical aberration between the objective lens and the recording substrate surface, and controlling the recording laser to perform recording operations in the y-axis direction; 6. Adjusting the focal length offset of the objective lens and repeating step 5 until all storage codes in the z-axis direction are recorded, obtaining three-dimensional volumetric storage data. This invention also provides an optical storage device. The method provided by this invention solves the problem of excessively long data storage time in the prior art, improving the success rate and accuracy of recording.

The present invention relates to a method of concurrently storing visible grey scale or color information of an image and additional digital information on a data carrier.

An information storage method and information storage medium are provided that have improved storage density through a multi-bit coding method. A method for storing information comprises providing a substrate and encoding information on the substrate by using a laser and / or a focused particle beam to form a plurality of recesses in a surface of the substrate, the recesses having different shapes and / or sizes and, optionally, different depths, each recess corresponding to a predetermined information value.

The invention discloses an anti-explosion and anti-adhesion glass optical disc and a manufacturing method, and belongs to the technical field of optical storage. The glass optical disc comprises an optical disc body, the optical disc body is provided with a center hole, the optical disc body comprises a data recording area and an explosion-proof film, and the explosion-proof film is used for wrapping a first circular ring area on the upper surface of the optical disc body, the inner surface of the center hole of the optical disc body and the lower surface of the optical disc body; the inner diameter of the first ring area is equal to the radius of the center hole; wherein the explosion-proof film is a polymer PET film, and the light transmittance of the explosion-proof film is greater than or equal to 90%. The explosion-proof film is adhered to the surface of the center hole of the optical disc, so that the adhesion of the optical disc during stacking can be reduced, the stability of the optical disc is improved, the fragmentation and adhesion risks of the glass optical disc in daily use and storage processes can be effectively reduced, and the service life of the optical disc is prolonged.

Disclosed is a remote transmission controllable external optical disc driver data processing method and device. The method includes: processing optical disc data objects converted by a decoding module by a microprocessor and transmitting the optical disc data objects to a remote server and a mobile terminal to be stored; transmitting the optical disc data objects to be burnt in a local or remote server to a memory chip configured in a storage module; and converting analog signals by the decoding module into digital signals and burning the digitals signal into a blank optical disc. According to the present disclosure, the application efficiency of the optical disc driver device is improved, and the application scenarios are expanded.

A method for writing voxels onto a substrate using a laser writing system includes: forming a first voxel at a first position in the substrate using a first laser pulse; detecting light emitted or scattered by the substrate as a result of the formation of the first voxel; determining whether the detected light satisfies predetermined constraints; and adjusting the amplitude of a second laser pulse if the detected light does not satisfy the predetermined constraints. The light emission or scattering from the substrate as a result of voxel formation is related to the properties of the formed voxel. By monitoring such emission or scattering, it is possible to compensate for changes in the performance of the laser writing system. A laser writing system and a computer program product implementing the method are also provided herein.

The invention provides a high-density volume storage optical disc information read-write device and method. The device comprises a torquer 1, a dual-wavelength dual-objective optical path structure, a compensation lens module, a PZT driver and a PMT array. The dual-wavelength dual-objective optical path structure comprises a servo objective 4 and a read-write objective 5 which are independent, and a rigid connecting mechanism is arranged between the servo objective 4 and the read-write objective 5 and used for ensuring that the motion trails of the servo objective 4 and the read-write objective 5 are synchronous; the compensation lens module is connected with the PZT driver and is used for dynamically modulating the axial focus position of a write-in / read-out light spot; and the PMT array is used for detecting and reading a scattering signal of the light spot 7 and generating servo feedback. According to the device, the data writing speed is increased, meanwhile, accurate servo for reading out the focusing light spot can be completed under the condition that the optical disc is not provided with a reflecting layer, and the device is suitable for various body storage optical discs including but not limited to optical discs made of fluorescent, glass, ceramic and other materials.

A drawing apparatus according to an aspect of the present disclosure includes a light source section and a scanning section. The scanning section irradiates a surface of the recording medium with a plurality of laser beams generated by the light source section. The light source section generates at least one laser beam among the plurality of laser beams to cause a beam shape of each of the laser beams at a position of the recording medium to satisfy a relational expression below, and to cause a length of the beam shape in a direction parallel to a scanning direction of the laser beams to be 0 degrees or more and 20 degrees or less with respect to the scanning direction of the laser beams: Ly×1.1≤Lx<Ly×5.0 d×0.8≤Ly≤d×1.3 Lx: Length of the beam shape in a direction parallel to the scanning direction of the laser beams Ly: Length of the beam shape in a direction orthogonal to the scanning direction of the laser beams d: Pixel size.

This application discloses a servo control method and apparatus for optical storage media, as well as a data read / write apparatus, relating to the field of optical storage technology. In this method, the servo laser position error is compensated by removing the reproduced portion of the position error between the irradiation position of the servo laser on a reference plane and the read insector using a compensation value of the high-frequency reproduced error corresponding to the read / write position in the optical storage medium, in order to reduce the current position error. Based on the reduced position error, the objective lens shared by the servo laser and the read / write laser is controlled to remove the compensated position error and improve the control accuracy of the tracking servo control of the servo laser.

To provide a laser recording device capable of high-quality color reproduction. [Solution] A laser recording apparatus according to one embodiment for recording an image on a medium having multiple color-emitting layers that emit different colors when exposed to light of different wavelengths comprises a plurality of laser units provided corresponding to the plurality of color-emitting layers, each laser unit emitting laser light of a wavelength that causes the corresponding color-emitting layer to emit color. One pixel is formed by multiple adjacent color marks in the in-plane direction of the medium.

The recording medium in one aspect of the present disclosure has a recording layer. The recording layer contains an aliphatic polymer; and a multi-photon absorbing compound having a multi-photon absorption property, which contains at least one selected from the group consisting of carbon-carbon double bond, carbon-nitrogen double bond, and carbon-carbon triple bond. When the thickness of the recording layer is 100 μm, the transmittance of the recording layer to light of wavelength 405 nm in the thickness direction is 80% or more.