摘要:
A correction processing unit for correcting a level fluctuation appearing on a tracking error signal when a laser beam passes an ID area on a medium track during an on-track control is provided. That is, in the correction processing unit, a correction value determined by a correction value determining unit at a correction timing detected by a correction timing discriminating unit is subtracted by a correcting unit from a signal value obtained by sampling and converting the tracking error signal into digital data by an A/D converter at a predetermined period and reading, thereby performing the correction.
摘要:
After a first test pattern and a second test pattern were sequentially test written to at least two adjacent tracks by a light emission driving of a laser diode, the adjacent track in which the first test pattern was first test written is reproduced, thereby checking the presence or absence of a data error. When there is the data error, the test writing is repeated while changing a light emitting power until the data error is eliminated. When there is no data error, the light emitting power used in the test writing is set to a recording power.
摘要:
Spherical aggregate crystals of a phosphoric acid/lysine/magnesium composite salt represented by formula (1):R.sub.a Mg.sub.b H.sub.c PO.sub.4.(H.sub.2 O).sub.n (1)whereR is a lysine cation;a is 0.15 to 1.0;b is 1.0 to 1.42;c is 0 to 0.3;n is 0 to 10; anda+(2.times.b)+c=3.
摘要翻译:由式(1)表示的磷酸/赖氨酸/镁复合盐的球形聚集晶体:RaMgbHcPO4。(H2O)n(1)其中R是赖氨酸阳离子; a为0.15〜1.0; b为1.0〜1.42; c为0〜0.3; n为0〜10; 和+(2xb)+ c = 3。
摘要:
There is provided an optical storage device that can position a lens carriage and objective lens even when position sensors for the lens carriage and objective lens are excluded in an effort to make an optical disk unit thinner. In the optical storage device, immediately after an optical disk is loaded in a main body, the cutoff frequency of a filter lying on a path of a reproduction signal is temporarily changed to a lower frequency. A spacing of sectors of the optical disk is detected using a signal sent from the filter. A type of an optical storage medium and a position of a current reproduction track are detected on the basis of the detected sector spacing and data stored in a memory.
摘要:
Transgenic mice carrying a recombinant DNA construct comprising the gene encoding diphtheria toxin A chain operably linked to a osteocalcin promoter. The transgenic mice can be used as a model for metabolic bone diseases since they have decreased bone mass associated with a marked reduction in the number of osteoblasts.
摘要:
When a steady straight advancing state presuming device presumes that the vehicle is in a steady straight advancing state, and a slip rate calculating device calculates a small slip rate, based on an output from a driving-state detecting device, or when the steady straight advancing state presuming device presumes that the vehicle is in the steady straight advancing state, and a driven wheel torque calculating device calculates a small driven wheel torque, based on the output from the driving-state detecting device, a correction execution determining device determines that the vehicle is in a stable state suitable for correcting the wheel speed. By a command from the correction execution determining device, a correcting device corrects the driven wheel speed or the follower wheel speed based on a speed ratio of the driven wheel speed to the follower wheel speed calculated by a speed ratio calculating device. Thus, when a different-diameter tire has been mounted on a wheel, it is possible to precisely correct the wheel speed without being influenced by the slipping of the driven wheels or by the turning of the vehicle.
摘要:
A subtractor calculates an actual wheel speed difference between rotational speeds of left and right wheels on a motor vehicle, and a steering angle converter calculates an actual steering angle from the actual wheel speed difference. The difference between the actual steering angle and an adequate steering angle which is produced based on a lateral acceleration is compared with a predetermined reference range. If the difference between the actual and adequate steering angles exceeds the predetermined reference range, then the pneumatic pressure of a tire on one of the left and right wheels is determined as being lowered. In the steering angle converter, a weight value is established according to a running condition of the motor vehicle, and the calculated actual steering angle or comparative sensitivity is varied according to the weight value. Since the comparative sensitivity is varied according to the running condition, a reduction in the pneumatic pressure of the tire can be detected even under running conditions which lead to large errors.
摘要:
A driven wheel torque control system includes a slip-reduction output torque control device for adjusting the output torque from a prime mover of a vehicle in accordance with the slipping state of a driven wheel driven by the prime mover in order to reduce an excessive slipping of the driven wheel, an operation quantity detecting device for detecting the operation quantity of an operating element for adjusting the output torque from the prime mover, a grip force detecting device for detecting a grip force of a road surface, an output torque gain changing device for changing the output torque control gain from the prime mover with respect to the output from the operation quantity detecting device on the basis of the output from the grip force detecting device, and a gain variable output torque control device for adjusting the output torque from the prime mover on the basis of the output torque control gain changed by the output control gain changing device. Thus, it is possible to positively control the slipping state of the driven wheel on the basis of a driver's will.
摘要:
A disk apparatus having a readout circuit for providing readout data signals and capable of immediately detecting runaway of a readout clock signal generated from a VFO (Variable Frequency Oscillator) in the readout circuit if such occurs. The disk apparatus is free from a read error due to a permanent defect on a disk, e.g., an optical disk, or other causes. The disk apparatus includes a head for picking up signals from a disk, and a readout circuit for providing a readout signal and a readout clock signal, including a digitizing circuit for receiving and digitizing a data signal picked up by the head into a binary data signal, a reference clock generator for generating a reference clock signal and a variable frequency oscillator for receiving a read-gate signal, the digitized binary data signal and the reference clock signal and generating a readout data signal and a readout clock signal, each synchronized with the reference clock signal. The disk apparatus further includes a detecting circuit for supplying the read-gate signal to and receiving the reference clock signal and the readout clock signal from the readout circuit and for detecting that a synchronizing operation in the variable frequency oscillator is in an abnormal state and resetting the read-gate signal when a frequency difference between the reference clock signal and the readout clock signal exceeds a predetermined value.
摘要:
A rectangular wave generator includes a comparator having a first input terminal receiving an input signal, a second input terminal, and an output terminal. The comparator slices the input signal at a hysteresis voltage so that a rectangular wave is output via the output terminal. The generator also includes a differentiating circuit connected between the output terminal and the second input terminal. The differentiating circuit functions as a feedback circuit. In lieu of the differentiating circuit, it is possible to use a feedback circuit connected between the output terminal and the second input terminal, the feedback circuit comprising a control unit for changing a feedback quantity of the differentiating circuit in accordance with variations in a frequency of the input signal.