73results about "Optical recording systems" patented technology

The utility model discloses an optical disc burning printer which comprises an optical disc transmission channel, one end of the optical disc transmission channel is provided with an optical disc storage bin and a burning assembly, and the other end of the optical disc transmission channel is provided with an optical disc outlet. An optical disc thermal printing head and a lifting assembly for driving the optical disc thermal printing head to ascend and descend are arranged above the optical disc transmission channel and located between the burning assembly and the optical disc outlet. The optical disc in the optical disc storage bin flows out, after the recording assembly records the digital information to the optical disc, the optical disc thermal printing head can directly print patterns and characters on the smooth surface of the optical disc, and the optical disc thermal printing head does not need to be coated with a matte layer in advance.

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.

Methods for inducing reversible or permanent electrical conductivity in wide bandgap metal oxides such as Ga2O3 using light rather than doping are described, as well as related compositions and devices.

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 embodiment of the invention provides an all-optical magnetic recording device and method, and is applied to the technical field of magnetic storage. The all-optical magnetic recording device comprises an information reading module, an information writing module and a storage medium, the information reading module comprises a magnetoresistive sensor; the magnetoresistive sensor is used for acquiring read-back information of a target storage unit on a storage medium; the information writing module comprises a laser source, an optical waveguide and a pulse selector; the laser source is used for emitting laser pulses; the optical waveguide is used for guiding the laser pulse to a corresponding storage unit of a storage medium so as to write information; the pulse selector is arranged between the laser source and the optical waveguide; and the pulse selector is used for selectively outputting the laser pulse emitted by the laser source according to the comparison result of the information to be written and the read-back information. According to the device, the application of all-optical magnetic overturning is realized, rapid and effective information writing is ensured, and the application effect of an all-optical magnetic recording technology is improved.

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.

The optical disk device of the present disclosure is characterized in that a signal obtained by extracting an adjacent track component from a playback signal of a target track is generated and phase error is detected from mutual correlation with a playback signal of the adjacent track, whereby resampling is performed so that the playback signal of the target track and the playback signal of the adjacent track take on adjacent signal waveforms at the same angular position.

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.

One example provides a system (800) for reading birefringence data. The system includes one or more light sources (802, 804), a first polarization state generator (808) positioned to generate a first polarization from light of a first wavelength band output by the one or more light sources, a second polarization state generator (810) positioned to generate a second polarization from light of a second wavelength band output by the one or more light sources, an image sensor (822) configured to acquire images of a sample area (814) via the first polarization and the second polarization, a polarization state analyzer (824) positioned between the sample area and the image sensor, a first bandpass filter configured to pass light of the first wavelength band to reach the image sensor, and a second bandpass filter configured to pass light of the second wavelength band to reach the image sensor.

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.

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.

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 law enforcement integrated management platform, an optical disc storage assembly and a process, which include hardware based on servers, local machines, databases, monitors, processors and input devices; the platform includes a screenshot module, a statistical column module, an analysis column module, an evaluation column module, a sunshine police service public module, a drying column module, a business training module, a data mining module, a supervision and management module, a comprehensive query module, a video access module, a role management module and a large screen data analysis and display module; the screenshot module is used for quickly supervising screenshots, and has modules for loading pictures, inputting key items after screenshot, saving pictures, cropping, drawing lines and / or text editing; the statistical column module has a police handling module.

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 concurrently storing visible grey scale or color information of an image and additional digital information on a data carrier.

This disclosure describes a system and method for producing and reading a secure solid-state quantum storage device. The system comprises an illumination source and a detection system. The illumination source provides an excitation light to a quantum memory array. The detection system detects an emitted light from the quantum memory array. The emitted light corresponds to a plurality of quantum bits stored in the quantum memory array.

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.