Abstract:
PROBLEM TO BE SOLVED: To provide a digital microscope apparatus that can process focusing at high speed and with high accuracy.SOLUTION: A digital microscope apparatus comprises a first imaging unit having a first optical system including an object lens that enlarges the image of a preparation slide holding an observation object and a first imaging element on which an image is formed through the first optical system; a second imaging unit having a second optical system, which is branched out of the first optical system and is greater in field depth than the first optical system, and a second imaging element on which an image is formed through the second optical system; and a control unit that calculates a tentative focusing position of the object lens on the basis of the image shot by the second imaging unit, determines an area in which an image is read out of the first imaging element of the first imaging unit, and searches a prescribed range with reference to the tentative focusing position for a focusing position of the object lens on the basis of the image read out of the first imaging element.
Abstract:
PURPOSE:To stabilize the optimum value (Ib-opt) of a bias current and to stabilize a bit error rate (BER) by determining the ratios of magnetic permeability of MR elements to respective shielding magnetic materials according to a gap length. CONSTITUTION:This magnetic head is a so-called vertical type MR head (vertical type magneto-resistive magnetic head) and is formed by arranging a magneto-resistive effect element (MR element) in such a manner that its longitudinal direction is perpendicular to the medium-facing surface (ABS surface) with a hard disk. The MR element 4 is formed by holding the element with the lower shielding magnetic material 7 and the upper shielding magnetic material 8 therein. The ratio of the magnetic permeability of the MR element 4 to the respective shielding magnetic materials 7, 8 is determined according to the gap lengths L2, L2 of the magnetic gap for reproduction formed between the respective shielding magnetic materials 7, 8 and the MR element 4. As a result, Ib-opt is stabilized and BER is stabilized even if the gap is narrowed. The reliability of the reproduced signals is thus improved.
Abstract:
PROBLEM TO BE SOLVED: To generate image data of a viable tissue in a short time. SOLUTION: The focal information generating device 2 receives a first reflected light beam Lr1 separated from a reflected light beam Lr and a second reflected light beam Lr2 passing through a pinhole plate 36. A signal processing unit 13 calculates a sum signal SS and a difference signal SD, and also uniform reflectance RE expressing a ratio of light quantity of the second reflected light beam Lr2 to the first reflected light beam Lr1. A supervisory control unit 11 detects a position Z1 equivalent to an upper surface 104A of a cover glass 104 based on the sum signal SS or the difference signal SD, and also detects a position Z3 expressing the viable tissue 102 based on the sum signal and the uniform reflectance RE. As a result, the supervisory control unit 11 can calculate a cover distance DM from the upper surface 104A of the cover glass 104 in a pathological slide glass 100 to the viable tissue 102 based on the positions Z1 and Z3. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PURPOSE:To reduce reproducing data error by reducing cross talk between adjacent tracks and to increase recording density by reducing a guard band which between the tracks. CONSTITUTION:Unique patterns 23 and magnetic clock patterns 22 continuing radially are provided on a magnetic disk 21, and data segments 24 are provided between them. A head 26 is connected to a reproducing amplifier 28 corresponding to the patterns 23, 22 and head 26 is connected to a recording amplifier 33 corresponding to the segment 24 in a recording mode. An external clock CKO synchronizing with the pattern 22 is formed in a clock generation circuit 31, and a data existing point clock CKd is formed by that and inputted to a D flip-flop 32 supplying recording data to the amplifier 33. A recording is performed while magnetization inversion phases are shifted by 180 deg. from each other between the adjacent tracks since the clock CKd has phase difference of 180 deg. between even-numbered and odd-numbered tracks. The cross talk is reduced since reproducing pulse positions of a reproducing subject track and an adjacent track are not superposed mutally.
Abstract:
PROBLEM TO BE SOLVED: To acquire a precise magnified image while improving usability. SOLUTION: The tissue-slice image acquirement method acquires a precise dark field magnified image while improving the usability by accurately acquiring a profile shape of a tissue-section portion in a bright field thumbnail image by: correcting the profile shape of the tissue-section portion in a dark field thumbnail image based on the bright field thumbnail image; acquiring a dark field magnified image by using that profile shape; and then, displaying the bright field thumbnail image and the dark field magnified image together. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a disk device in which reliability of the device is improved by adopting new observation information and the processing method of the observation information and to provide the evaluation method of the device. SOLUTION: At least one of the followings is observed as new observation information in order to observe the physical condition of the device, i.e., the amount of jitter (the amount of phase difference) of servo clock obtained from a tracking/phase information detector 31, the amount of positional error of a head and the amount of driving current of a spindle motor. Thus, the difficulty between the head and a disk is recognized and reliability of the device is improved. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To minimize the probability that servo information is misdetected by inputting phase-difference divided bit streams generated by dividing a sampled bit stream by an analog-digital converting circuit and detecting addresses according to the individual input divided bit streams. SOLUTION: The signal converted by an A/D converter(ADC) 526 is inputted to a track number/position signal detecting circuit 517, whose detection signal is further inputted to a position control circuit 522 performing position control, and a voice coil motor(VCM) 523 is driven to control the positioning of a head 512. The 4-fold oversampling signal from the ADC 526 is inputted sequentially to an address detector of a track number/position signal detecting circuit 517, one by one, to discard a 4th sample and then the next and succeeding samples are inputted to the address detector in order.
Abstract:
PROBLEM TO BE SOLVED: To surely follow eccentricity of a recording medium by generating plural sinewave signals with different phases based on a rotation synchronizing signal synchronized with the rotation of the recording medium and successively correcting amplitude according to a phase comparison signal output answering to a phase difference between a reference signal and a clock signal. SOLUTION: A time reference signal S11 obtained reproducing a clock mark in a servo area is supplied to an input terminal of a phase comparator 32, and the clock signal S12 outputted from a VCO 42 is divided to a frequency of 1/N times through a frequency divider 43 to be supplied to the other input terminal. The phase comparator 32 converges the phase error of the time reference signal S11 based on feedback control by PLL loops 32, 41-43 to supply a phase error signal S22 to an adder 40. By keeping the phase difference between an eccentricity follow signal S28 and the clock signal S12, the clock signal S12 having the frequency of N times of the eccentricity follow signal S28 and synchronized with the eccentricity follow signal S28 is outputted from the VCO 42.
Abstract:
PROBLEM TO BE SOLVED: To realize stable driving control of an objective lens driver which constitutes an optical head device and has a driving mechanism with three shafts or more including the driving shafts in the focusing direction and the tracking direction. SOLUTION: The objective lens driver 6 is provided with a movable part 7 which holds the objective lens 5 and is position-controlled in the focusing direction and the tracking direction with respect to a disk 2 is provided with a driving mechanism 9 for rotating the movable part 7 around the shaft with respect to a plane almost parallel with the disk 2, including the direction along a disk radial direction. By supplying a driving signal with a waveform obtained by combining a direct current voltage component or a low frequency alternating current component and high frequency alternating current voltage component to a driving coil constituting the driving mechanism 9, the influence of static friction in the driving mechanism 9 is relieved and an influence resulting from having a hysteresis characteristic in relation to a position and an angle corresponding to a driving voltage value is reduced. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To quickly perform an initial synchronism establishment in a synchronizing servo type disk device. SOLUTION: In an initial synchronism establishment, a waveform of a reproduced signal is blunted by controlling a cut-off frequency of a band pass limiting filter 26 so that the waveform is made a low value. Quantity of an error for a peak value of a detected sampling value is suppressed to a small value by blunting a waveform of a reproduced signal when a sampling phase is out of a phase of a reproduced signal. Thus, in the initial synchronism establishment, probability with which an unique pattern and a segment ID pattern are detected is improved. Therefore, probability with which operation detecting the unique pattern and the segment ID pattern is repeatedly performed can be a low level, and initial synchronism establishment can be quickly performed. Also, probability with which the unique pattern and the segment ID pattern are detected can be improved and initial synchronism establishment can be quickly performed by also controlling a reference amplitude value required for operation of a viterbi decoder in a unique pattern detecting circuit 20 so as to be a low level.