60results about How to "Information stability" patented technology

The present invention provides a molecular level of DNA information code which uses a base pair sequence as an information code unit. Also, the present invention provides a molecular code system which includes designing and coding DNA which is an information code unit; stabilizing the DNA information code by encapsulating it with an inorganic capsule and coating the DNA-inorganic capsule to a medium; taking and extracting the coated DNA information code which is present in a trace amount, collecting the DNA information code using a polypyrrole-maghemite nanohybrid; and amplifying the collected DNA information code using a polymerase chain reaction and reading the amplified DNA information code. According to the present invention, the DNA information code having high security is prepared by assigning a security unit to a DNA which has an excellent accumulating capacity, and then the DNA information code is stabilized so as to be coated to a medium. Only the DNA information code may be extracted, collected, and read, if necessary. Thus, a unified molecular code system can be established.

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

where

• • λ: 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.

A hologram recording method for forming a light interference pattern in a hologram recording medium to record information thereon. The method includes a step of interfering with a reference beam a signal beam spatially modulated by an information pattern which carries the information to generate interfered beams. The method includes a step of executing a recording sequence a plurality of times, the recording sequence including steps of irradiating the interfered beams onto a recording surface of the hologram recording medium to form a group of a plurality of holograms each corresponding to the information pattern. The method includes a step of completing the recording sequence. Different modulation conditions are set for at least one of the signal beam and the reference beam in one recording sequence and the subsequent recording sequence immediately after the one recording sequence.

A switching method in a bidirectional line switched ring includes the steps of performing span switch by one node of the ring for getting rid of a fault detected by the one node, changing the span switch into ring switch when the span switch could not be performed normally, and performing the ring switch, and holding the ring switch request as an internal request of the one node when a span switch request, higher in priority than the ring switch, generated in another node is received by the one node.

A hologram recording medium is for recording or reproducing information with light irradiated thereto. The medium has a recording layer made of a photo-sensitive material, a reflective layer disposed on the opposite side of the recording layer from a light irradiated side, tracks formed on the reflective layer such that the tracks are spaced apart by a first pitch from each other to extend without intersection, and positioning marks formed on the reflective layer such that the positioning marks are spaced apart by a second pitch from each other in a direction in which the tracks extend. The second pitch is a function of the first pitch.

A substrate for bioassay comprises a substrate and a group of reaction regions serving as a field where interaction between substances proceeds and formed in the substrate, and a group of information pits used to obtain positional information of individual reaction regions and/or substance information used in the reaction regions. The group of reaction regions and the group of information pits are not formed in the same substrate surface. A bioassay apparatus using the substrate and a method for making the substrate are also provided.

An optical information recording medium, which is made of a resin provided with photoreactivity containing organometal compound, has a recording layer on which, after a photoreaction are brought about when predetermined initialization light is irradiated to the medium and then the resin is hardened, at a time of recording information, a recording mark is formed when predetermined recording light is condensed to the medium, and a temperature of the medium near a focal point of the recording light is increased and the organometal compound is transubstantiated, and at a time of reproducing information, the information is reproduced based on returned light according to predetermined reading light being irradiated.

To provide a two-dimensional modulation method for hologram recording which is capable of preventing degradation of reconstructing performance when positional shift occurs and which enables information to be stably recorded or reproduced. The hologram recording carrier employs the two-dimensional modulation method for hologram recording for generating coherent light containing therein page data through a spatial light modulator having a plurality of pixels two-dimensionally arranged therein, in which the pixels of the spatial light modulator are partitioned into a plurality of blocks consisting of m pixels adjacent to each other (where m=an integral number), and a boundary portion which has a width having at least the width of one pixel of the spatial light modulator or of one pixel of an image detecting sensor used to reproduce the recorded page data and the distance between the adjacent pixels in each of the blocks, and each of which shields light is provided between the adjacent blocks.

An optical head apparatus capable of stably obtaining a detection signal of spherical aberration even with a high density optical disk. A spherical aberration error signal is obtained by: dividing the returning light from the optical disk into a transmitted light and a diffracted light; reproducing information with the transmitted light having a larger amount of light while dividing the diffracted light having a small amount of light into two regions, i.e., region near the optical axis and a region distant from the optical axis; determining amounts of focus deviation in respective regions as focus error signals; and taking the difference signal therebetween. Thus, it is possible to detect the amount of spherical aberration with the SN ratio of the information reproducing signal kept at high level.

A magnetic memory element includes: a first magnetization free layer configured to be composed of ferromagnetic material with perpendicular magnetic anisotropy; a reference layer configured to be provided near the first magnetization free layer; a non-magnetic layer configured to be provided adjacent to the reference layer; and a step formation layer configured to be provided under the first magnetization free layer. The first magnetization free layer includes: a first magnetization fixed region of which magnetization is fixed, a second magnetization fixed region of which magnetization is fixed, and a magnetization free region configured to be connected with the first magnetization fixed region and the second magnetization fixed region. The first magnetization free layer has at least one of a step, a groove and a protrusion inside.

A method and a user terminal for identifying exercise information of a user are provided. The method includes detecting air pressure information at a location of the user terminal; identifying a state of a topography at the location of the user terminal by using the detected air pressure information; analyzing vertical movement and horizontal movement of the user terminal to identify movement information of the user terminal; and identifying the exercise information of the user according to the identified movement information of the user terminal and the identified state of the topography at the location of the user terminal.

An optical lens includes a hologram, a refractive lens, and a phase level difference. The hologram has a sawtooth shape grating having a sawtooth shape in cross-section, and generates +2nd-order diffracted light most strongly with respect to blue light and +1st-order diffracted light most strongly with respect to red light, by setting a height of the sawtooth shape grating. The +2nd-order diffracted light of blue light is condensed through a substrate with a thickness t1, and the +1st-diffracted light of red light is condensed through a substrate with a thickness t2 (t1<t2). The difference in optical path length occurring when the blue light passes through the phase level difference is five times the wavelength of the blue light.

An error factor estimating method estimates a factor of an error occurring when information recorded on a digital recording medium is reproduced by a digital recording and reproducing apparatus. The error factor estimating method includes the steps of: recording error factor estimation data on a digital recording medium; reproducing the error factor estimation data from the digital recording medium to obtain an error factor estimation signal; and estimating the factor of the error based on the factor estimation. The error factor estimating method can estimate the factor of occurrence of the error based on a factor estimation signal obtained by reproducing the error factor estimation data from the recording medium by the digital recording and reproducing device without affecting user data recorded on the recording medium at all.

A diffraction grating is constituted such that directions of diffraction are disposed asymmetrically with respect to the optical axis, by causing light subjected to aperture restriction to have a difference of one half wavelength in the optical path length by making use of the fact that the difference in the optical path length experienced by the light passing through a diffraction element varies depending on the wavelength. With this constitution of the diffraction grating, aperture restriction is applied to both the light focused on an optical disk and the light reflected from the optical disk, thereby achieving an optical pickup that is capable of recording/reproducing information on/from optical disks of different types by using a single objective lens. The optical pickup prevents unnecessary light from entering a photodetector and enables the production of diffraction elements at a low cost.

A recording data string is composed of a plurality of synchronous frames each of which has synchronous data and coding data. Data items in the coding data contributed to creation of the same column of the error correction code are arranged at regular intervals of E in the recording data string. A data segment length L is obtained by adding an additional synchronous frame to the recording data string. Wherein, a physical segment length A satisfies the equation L=mA, m is a natural number. And A is set indivisible by E.

A recording medium (10) is provided with a left-handed material layer (1) having at least one of a permittivity and a permeability of a negative value, and having substantially periodically formed structures; and a recording layer (2) including island-shaped and substantially periodically arranged recording regions (22), and being laminated on the left-handed material layer (1). The structure period of the left-handed material layer (1) is equal to or is an integral multiple of the arrangement period of the recording regions (22) of the recording layer (2).

A biological information acquisition telemetry system includes: a transmit device, attached to a part of a living body and configured to acquire a biological signal to transmit the biological signal as a radio signal; a relay device, configured to perform space diversity reception, the relay device including: a first receiver, configured to wirelessly receive the radio signal from the transmit device; a first transmitter, configured to transmit the radio signal received by the first receiver; and an attachment unit, adapted to hold the first receiver and the first transmitter and attach the first receiver and the first transmitter to the living body; and a center apparatus, including: a second receiver, configured to receive the radio signal from the first transmitter of the relay device; a processor, configured to generate biological information based on the radio signal received by the second receiver; and a display, configured to display the biological information generated by the processor.

A magneto-optical recording medium where an optical recording film is formed on optical phase pits formed on a substrate can be optically regenerated both the optical phase pit signals and the signals of the recording film formed thereon. The modulation degree of the phase pits is adjusted by changing the gas pressure when the recording film is deposited on the substrate by sputtering. By this, an optical storage medium, of which the jitter of RAM signals and the phase pit signals are suppressed to the target 10% or less, can be uniformly manufactured at low cost.

Provided is an information sharing system which allows setting information relating to a second communication device to be shared with a first communication device. The information sharing system includes an information collection device that retains the setting information and is communicatively connected to the first communication device, and a management device that makes a request for transmission of the setting information with respect to the information collection device. The management device includes a communication management unit that determines whether or not communication is established between the first and second communication devices when receiving the request for transmission of the setting information, and an information request unit that makes a request for transmission of the setting information with respect to the information collection device in a case where it is determined by the communication management unit that the communication is established between the first and second communication devices. The information collection device includes an information management unit that transmits the setting information to the first communication device in response to the request made by the information request unit.