Patent application number | Description | Published |
20110001976 | METHOD AND APPARATUS FOR BIOGENIC SUBSTANCE CONCENTRATION MEASUREMENT - The present invention provides an apparatus for biogenic substance concentration measurement including: a cell including therein a first region, a second region, and a test solution retention space; a light source; a polarizing plate; and a photoreceiver, in which a plurality of first metallic nanorods each having a first antibody on a surface thereof are immobilized on the first region, a plurality of second metallic nanorods each having a second antibody on a surface thereof are immobilized on the second region, the respective long axes of the plurality of first metallic nanorods are aligned in the same direction, the respective long axes of the plurality of second metallic nanorods are aligned in the same direction, the long-axis direction of the first metallic nanorod is orthogonal to the long-axis direction of the second metallic nanorod, and at least one of the polarizing plate and the cell is capable of rotation with an optical axis as the rotation axis. | 01-06-2011 |
20120029326 | METHOD FOR MEASURING A CONCENTRATION OF A BIOGENIC SUBSTANCE CONTAINED IN A LIVING BODY - The object of the present invention is to provide a method for measuring concentration of a biological substance contained in a living body in which deterioration of the accuracy due to the reflected light and the interruption component is suppressed. Linear-polarized light is emitted to a particle chip implanted in the skin with modulating its modulating direction continuously. A surface enhanced Raman scattering light of the biological substance generated on the particle chip. A concentration of the biological substance is calculated based on the received signal. The receiving signal satisfy the following equation (III). | 02-02-2012 |
20120215078 | METHOD FOR MEASURING A CONCENTRATION OF A BIOGENIC SUBSTANCE CONTAINED IN A LIVING BODY - One of the purposes of the present invention is to provide a biogenic substance concentration measuring method with improved measuring accuracy. An embodiment of the present invention provides a method for measuring a concentration of a biogenic substance contained in a living body, the method comprises steps of preparing a measuring device, wherein the measuring device comprises a light source, an optical filter, and a light receiver; irradiating a substantially-parallel light from the light source onto a particle chip implanted in a skin though a position on the surface of the skin to generate a reflected light; inclining the light source and calculating the concentration of the biogenic substance on the basis of the difference of signals before and after the inclination. | 08-23-2012 |
20120265038 | METHOD FOR MEASURING A CONCENTRATION OF A BIOGENIC SUBSTANCE CONTAINED IN A LIVING BODY - One of the purposes of the present invention is to provide a biogenic substance concentration measuring method with improved measuring accuracy. An embodiment of the present invention provides a method for measuring a concentration of a biogenic substance contained in a living body, the method comprises steps of preparing a measuring device, wherein the measuring device comprises a light source, an optical filter, and a light receiver; irradiating different focused lights from the light source onto a particle chip implanted in a skin though a position on the surface of the skin to generate corresponding reflected lights; calculating the concentration of the biogenic substance on the basis of the difference of signals obtained from the reflected lights. | 10-18-2012 |
20120288960 | METHOD FOR MEASURING CONCENTRATION OF ANTIGEN CONTAINED IN TEST SOLUTION - A biogenic substance concentration measuring apparatus includes an optical measuring apparatus for measuring optical properties of a first substrate and a second substrate by using a cell for biogenic substance concentration measurement that includes: the first substrate on which a plurality of first metallic nanorods, each of which is modified with a substance that bonds specifically to a test substance, are immobilized such that the long axes thereof are aligned in the same direction; and the second substrate on which a plurality of second metallic nanorods, each of which is modified with a blocking substance, are immobilized such that the long axes thereof are aligned perpendicularly to the long axes of the first metallic nanorods on the first substrate, and calculates a biogenic substance concentration with high accuracy from the optical properties. | 11-15-2012 |
Patent application number | Description | Published |
20110158063 | OPTICAL DISC DEVICE AND DATA REPRODUCTION METHOD FOR THE SAME - Prevention of deletion of data in an unintended recording layer of an optical disc is ensured even when servo deviation occurs while controlling data reproduction. A light source outputs a light beam with light intensity according to a driving current on which a high frequency signal is superimposed. The light beam is collected on a recording layer of an optical disc. As triggered by detection of servo deviation during data reproduction, a light intensity controller adjusts a superimposed amount of the high frequency signal in the driving current to suit to a specific recording layer with the lowest reproduction tolerance in the optical disc and thereby controls the light intensity of the light beam output from the light source. | 06-30-2011 |
20110158068 | OPTICAL DISC DEVICE AND PLAYING METHOD OF OPTICAL DISC - To determine the optimum amplitude of high frequency signal for the loaded disc with a simple configuration to achieve stable playing performance, there is provided an optical disc device comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling amplitude of the high frequency signal to be superimposed on the drive signal for the light source; the optical disc device being configured to read data on an optical disc loaded therein by a signal outputted from the detector, wherein the controller determines the amplitude of the high frequency signal to be superimposed on the drive signal based on asymmetry of the signal outputted from the detector. | 06-30-2011 |
20110158074 | OPTICAL DISC DEVICE AND DISC IDENTIFICATION METHOD - To identify the type of a loaded disc, there is provided an optical disc device, comprising: a light source driven by a drive signal with a high frequency signal superimposed; a detector for detecting return light emitted from the light source; and a controller for controlling the amplitude of the high frequency signal to be superimposed on the drive signal, the optical disc device being configured to read data from an optical disc loaded therein by a signal outputted from the detector, wherein: the controller causes the light source to irradiate the loaded optical disc with light in a condition in which a high frequency signal different from a high frequency signal for data reading is superimposed on the drive signal; and the controller identifies a type of the loaded optical disc based on the return light from the loaded optical disc. | 06-30-2011 |
20110161994 | OPTICAL DISC DEVICE AND CONTROL METHOD OF OPTICAL DISC - An optical disc device comprising: a controller for reading data from an optical disc having a plurality of recording layers, wherein: the controller, in shifting a focus of the laser light from a first layer to a second layer, performs a first change that changes a setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to suppress peak power of the drive signal if a light density of the second layer is higher than a light density of the first layer; the controller shifts the focus from the first layer to the second layer; and the controller, after the focus has been shifted, performs a second change that changes the setting on the high frequency signal to a predetermined value at which the high frequency signal is superimposed to increase the peak power of the drive signal. | 06-30-2011 |
20110205871 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME - An optical disc drive for reading or writing information on a multilayer optical disc having three or more recording layers by irradiating the disc with a light beam includes an optical pickup for irradiating the disc with the light beam, a recording state detector for detecting data recording states at a start point of a focus jump, a transit point or transit points on a recording layer or recording layers to be passed through, and an expected landing point of a focal point of the light beam in a focus jump, and a controller for moving the optical pickup to a position where the recording states are the same at all of the start point, the transit point(s) on the recording layer(s) to be passed through, and the expected landing point if the recording states are different among those points, before starting the focus jump. | 08-25-2011 |
20110205872 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING THE SAME - An optical disc drive for reading or writing information on a multilayer optical disc having a plurality of recording layers by irradiating the disc with a light beam includes an optical pickup for irradiating the disc with the light beam, a focus error signal generator for generating a focus error signal that indicates a state of displacement of a focal point of the light beam from a recording layer based on reflection from the disc, a recording state detector for detecting a data recording state at a landing point of the focal point in a focus jump, a threshold setting unit for setting a threshold to be compared with the focus error signal based on the data recording state at the landing point, and a focus jump controller for controlling the focus jump based on a result of comparison of the focus error signal with the threshold. | 08-25-2011 |
20120008477 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING LASER LIGHT POWER IN OPTICAL DISC DRIVE - This invention provides an optical disc drive with more accurate and stable power control for a laser light source. An optical disc drive in an embodiment of this invention includes a monitor photodetector for receiving laser light emitted by a laser light source to monitor the laser light power. The monitor diode is a photodetector for generating an electric signal corresponding to the laser light power. A laser light controller controls drive current to the laser light source based on a result of measurement by the monitor diode. The optical disc drive measures output variations of the monitor diode and controls the gain of the monitor diode based on the result of the measurement. This gain control improves accuracy and stability in laser light control so that stability in recording/reading can be attained. | 01-12-2012 |
20120008478 | OPTICAL DISC DRIVE AND METHOD OF CONTROLLING POWER OF LASER LIGHT IN RECORDING TO OPTICAL DISC - This invention provides accurate control of laser light power in a recording operation to achieve more stable recording operation. An optical disc drive in an embodiment of this invention monitors the power of laser light with a monitor diode and controls the laser light power based on the result of monitoring. The optical disc drive changes data transfer rate (recording frequency) depending on the disc radial position. The optical disc drive controls the gain of the monitor diode across the recording surface depending on the recording frequency. This control improves the accuracy in laser light power control to achieve stable recording operations by precise servo control. | 01-12-2012 |
20120134253 | OPTICAL DISK DEVICE AND OPTICAL DISK RECORDING METHOD - An optical disk device and recording method of recording data on an optical disk by driving a laser light source with a driving current superimposed with a high-frequency current. The device and method includes a controller for disabling tracking servo and establishing conditions for reproducing a signal from a predetermined region of the optical disk, for generating a tracking error signal by superimposing the high-frequency current varied in amplitude on the driving current for the laser light source, for determining an amplitude of the high-frequency current that provides an optimum quality of the generated tracking error signal, and for recording data on the optical disk by applying the driving current for the laser light source superimposed with the high-frequency current of the determined amplitude. | 05-31-2012 |
20120182845 | OPTICAL DISC DEVICE AND LASER BEAM POWER CONTROLLING METHOD FOR OPTICAL DISC DEVICE - Erroneous data erasure owing to radiation of laser beam with excessive power to the recording layer of the multilayered optical disc upon servo-off while reproducing data of the disc is prevented. When detecting the servo-off based on the amplitude of the tracking error signal or the focus error signal, the laser beam power is reduced to a predetermined minimum value, and the laser beam power value is set again based on the address of the recording medium, which has been obtained later for reproduction. The laser beam power value is changed by applying an offset to the drive current or changing the target value under APC. | 07-19-2012 |