摘要:
This invention relates to an index signal generator of magnetic disk drive. The peak of a magnetic field from a magnet rotating in association with the rotation of the spindle in detected by a peak detecting circuit. A detection pulse signal output circuit outputs a detection pulse signal synchronously with the peak of the magnetic field on the basis of the result of the detection of the peak detecting circuit. A memory for storing adjustment data is provided. This adjustment data corresponds to the time after the detection pulse signal was output until the index pulse signal is output. An index pulse signal output circuit outputs the index pulse signal on the basis of the adjustment data stored in the memory after an expiration of the period of tiem corresponding to the adjustment data from the output of the detection pulse signal.
摘要:
A process of leaching gold can be inexpensively and efficiently carried out from a mixture containing sulfur and gold, typically from the material containing sulfur and gold that is an intermediate product recovered by the flotation method in the hydrometallurgical method. Specifically, the mixture containing elemental sulfur and gold and an aqueous solution of hydroxide of one or more of metals of alkali metals and alkaline earth metals are combined, the hydroxides reacting with elemental sulfur to form thiosulfate of alkali and/or alkaline earth metal, and the gold thereby being leached by reaction with the thiosulfate.
摘要:
A PLL circuit includes a phase comparing section, a low pass filter, a digital VCO circuit, and a frequency divider. The phase comparing section compares an inputted clock signal and a frequency-divided clock signal in phase to detect a phase difference. The low pass filter averages the phase difference outputted from the phase comparing section to output the averaged result as a frequency control input. The digital VCO circuit operates in synchronism with a reference clock signal, and generates a sync clock signal based on the frequency control input while a phase of the sync clock signal is controlled in units of predetermined resolution values. The predetermined resolution value is a 1/K (K is a natural number more than 1) of a period of the reference clock signal. The frequency divider frequency-divides the synch clock signal to generate the frequency-divided clock signal.
摘要:
A PLL circuit includes a phase comparing section, a low pass filter, a digital VCO circuit, and a frequency divider. The phase comparing section compares an inputted clock signal and a frequency-divided clock signal in phase to detect a phase difference. The low pass filter averages the phase difference outputted from the phase comparing section to output the averaged result as a frequency control input. The digital VCO circuit operates in synchronism with a reference clock signal, and generates a sync clock signal based on the frequency control input while a phase of the sync clock signal is controlled in units of predetermined resolution values. The predetermined resolution value is a 1/K (K is a natural number more than 1) of a period of the reference clock signal. The frequency divider frequency-divides the synch clock signal to generate the frequency-divided clock signal.
摘要:
A PLL circuit for comparing with a phase comparator 1a phase between an input signal and one of multiphase pulse signals CK0DIV to CKNDIV used as a channel clock generated by an output of a controlled oscillator 5, and controlling an oscillation of the controlled oscillator 5 according to a phase difference signal, comprises a frequency fixing circuit 9 for outputting an activating signal PCSTART for the control when the input signal is nearly equivalent to a frequency of the channel clock and has entered into a capture range of the phase comparator and a selection circuit 7 for selecting as the channel clock a multiphase pulse signal of a closest phase to a generating point of the input signal after generation of the activating signal, and the selection circuit 7 decides whether the input signal is advanced or delayed with respect to the channel clock after having selected a multiphase pulse signal as the channel clock and generates either an advance signal or delay signal according to the advance/delay of the input signal, for controlling a skew adjusting circuit 8 with the advance signal or delay signal.
摘要:
A flexible printed circuit board is provided including a flexible sheet having at least one electrically conductive layer, with a printed circuit pattern and a fold retainer pattern formed in one of the electrically conductive layers. The fold retainer pattern is electrically isolated from the printed circuit pattern. The fold retainer pattern has notches that indicate where the sheet is to be folded when the flexible sheet is folded, it is held in its folded shape by the fold retainer pattern.
摘要:
An image processing apparatus applicable to a multi-media copying machine with which multiple different recording media are usable includes a scanner for reading a document image and converting it into an electrical image signal, a floppy disk drive, an MPU and other controllers, and a printer for printing out an image on paper. The apparatus has not only a document-to-paper copying function but also a document-to-disk copying function and a disk-to-paper copying function.
摘要:
For supplying fuel from a fuel tank to an internal combustion engine by a fuel supply pump, a fuel delivery pressure of the fuel supply pump is regulated by a pressure regulating valve so as to maintain the difference between the fuel delivery pressure of the pump and an inner pressure of an intake manifold of the engine at a prescribed constant value, and the delivery volume of fuel from the pump is controlled in response to the fuel delivery pressure so as to minimize the amount of surplus fuel produced by the pressure regulating operation of the pressure regulating valve.
摘要:
A plasma nitriding method includes performing a high nitrogen-dose plasma nitriding process on an object having an oxide film by introducing a processing gas containing a nitrogen gas into a processing chamber of a plasma processing apparatus and generating a plasma containing a high nitrogen dose; and performing a low nitrogen-dose plasma nitriding process on the object by generating a plasma containing a low nitrogen dose. After the performing the high nitrogen-dose plasma nitriding process is completed, a plasma seasoning process is performed in the chamber by generating a nitrogen plasma containing a trace amount of oxygen by introducing a rare gas, a nitrogen gas and an oxygen gas into the chamber and setting a pressure in the chamber in a range from about 532 Pa to 833 Pa and a volume flow rate ratio of the oxygen gas in all the gases in a range from about 1.5% to 5%.
摘要:
A multiphase clock with high resolution is generated. A first clock generator circuit (120) includes n level converters BUFs that conduct level conversion on two input signals, and generate a pair of pulse signals that switch the levels with reference to a crossing point at which the two signal are identical in level with each other. An i-th BUF in the first clock generator circuit (120) inputs a one-side output pair that is respective one-side outputs of the differential outputs of two i-th (1≦i≦n) and (i+1)-th (1 when i=n) differential circuits in a ring oscillator 110 in which n differential circuits DCELs having differential inputs and outputs are connected in a ring configuration. The one-side output pair is two one-side outputs that are input to the noninverting terminal of the next differential circuit, or the two one-side outputs that are input to the inverting terminal of the next differential circuit.