摘要:
A mobile phone system of the present invention comprises mobile phone terminal (10), wireless base station device (20), mobile phone network (30), and base station information terminal (40). Base station information terminal (40) transmits service information specific to a particular area covered by wireless base station device (20) to wireless base station device (20). Wireless base station device (20) distributes the service information received from base station information terminal (40) to all mobile phone terminals (10) located in the particular area covered by wireless base station device (20) by using a wireless common channel.
摘要:
A nonvolatile semiconductor memory recovers variation in the threshold of a memory cell due to disturbance related to a word line. The nonvolatile memory continuously performs many writing operations without carrying out single-sector erasing after each writing operation, performing the additional writing operations quicker than the usual writing operation, and lightening the burden imposed on software for use in additional writing. The data stored in a designated sector is read out before being saved in a register, and the selected sector is subjected to single-sector erasing when a predetermined command is given. Then write expected value data is formed from the saved data and data to be additionally written, completing the writing operation.
摘要:
A nonvolatile semiconductor memory recovers variation in the threshold of a memory cell due to disturbance related to a word line. The nonvolatile memory continuously performs many writing operations without carrying out single-sector erasing after each writing operation, performing the additional writing operations quicker than the usual writing operation, and lightening the burden imposed on software for use in additional writing. The data stored in a designated sector is read out before being saved in a register, and the selected sector is subjected to single-sector erasing when a predetermined command is given. Then write expected value data is formed from the saved data and data to be additionally written, completing the writing operation.
摘要:
Air conditioning equipment that ensures sufficient noise reduction in the low frequency range of a few hundred hertz or below. The air conditioning equipment is characterized by including a heat exchanger for exchanging heat between air and refrigerant of a refrigeration cycle, a fan that supplies air to the heat exchanger, an air duct in which the fan is installed and through which acoustic waves are propagated, and a plurality of small holes that blows a jet into the air duct and sucks a jet from the air duct by a pressure difference between the blow side and the suction side of the fan.
摘要:
There is provided a writing circuit of an electro-optical device having a plurality of scanning lines, a plurality of data lines, and a plurality of pixels disposed to correspond to intersections between the plurality of scanning lines and the plurality of data lines. Here, each pixel comprises: a pixel capacitor having a pixel electrode and a common electrode opposed to the pixel electrode; and a switching element for electrically connecting the corresponding data line to the pixel electrode when the corresponding scanning line is selected. The writing circuit comprises an inversion circuit for maintaining a voltage between a potential of the data line and a predetermined potential for a predetermined time, and inverting the maintained voltage with respect to a reference potential and applying the inverted voltage to the data line after the lapse of the predetermined time, in a period of time when one scanning line of the plurality of scanning lines is selected.
摘要:
A substrate for an electro-optical device includes a plurality of scanning lines; a plurality of signal lines that are provided so as to cross the plurality of corresponding scanning lines; a plurality of pixel electrodes that are disposed in a matrix so as to correspond to intersections of the plurality of scanning lines and the plurality of signal lines; a plurality of amplifiers each of which has a first node and a second node, the first node being electrically connected to the corresponding signal line and being input with a first potential signal supplied to the pixel electrode, the second node being input with a second potential signal serving as a reference potential, each amplifier outputting signals such that by comparing a potential of the first potential signal with a potential of the second potential signal, the potential of the first node is further decreased when the first potential signal is low, and the potential of the first node is further increased when the first potential signal is high, each amplifier being provided such that a predetermined number of signal lines of the plurality of signal lines correspond to at least one of the first and second nodes; a selection unit that selects one signal line of the predetermined number of signal lines; and a connection unit that electrically connect the selected signal line to at least one of the first and second nodes of the amplifier.
摘要:
An electron beam test system is capable of judging high/low potentials with respect to a DC signal and a signal having no change in potential. The electron beam test system analyzes breakdowns by irradiating an electron beam to a semiconductor integrated circuit device to be analyzed and obtaining a potential contrast. The electron beam test system has a tester, an electron gun and a detector. The tester holds a test pattern to be supplied to the semiconductor integrated circuit device for a predetermined time, and performs an operation of changing direct current power source and an input signal to a reference potential at high speed on the semiconductor integrated circuit device. The electron gun irradiates the electron beam to the semiconductor integrated circuit device. The detector takes in the potential contrast right after the direct current power source and the input signal are changed to the reference potential.
摘要:
The fine jet control type sound absorption system of this invention, aimed at absorbing low-frequency sound with both discrete frequency and broadband frequency to the same degree as already existing acoustic lining can do, is composed of two parts. One is a barrier wall covering an air space in which the concerning low-frequency sound propagates and having a multiplicity of small holes formed therein. The other is the means for causing a fine jet passing through these small holes into or out from the air space. This sound absorption system realizes a fine jet in the vicinity of the barrier wall for the purpose of canceling the sound inside the air space by means of the interference of the sound with the fine jets. Any of or a combination of shape of small holes, jet ejection angle or suction angle, amount of jet flow, thickness of a barrier wall back layer and air flow angle at which secondary air flows into the barrier wall back layer is selected.
摘要:
A radio signal receiving apparatus and a method of radio signal receiving for improving the receiving characteristic by limit the excessive compensation in the AFC circuit are realized. The base band phasing signal output from the phase detector is input to the AFC unit. In the AFC unit, the base band phasing signal is supplied to two ways, one is supplied to a series processing path of the frequency error detecting part, the integrating equalizing part, the numerical limiting part and the integrator, and another is supplied to the adder. In the former case, the frequency error of the base band phasing signal supplied to the frequency detecting part is detected, the detected frequency error is integrated and equalized for every one symbol in the integrating equalizing part and, after that, the equalized frequency error value is limited within a predetermined range in the numerical limiting part, and finally, the frequency error limited by the numerical limiting part is integrated for every one symbol in the integrator. The integrated frequency error is subtracted from the original base band phasing signal, which is the signal of the latter case, by the adder.
摘要:
A nonvolatile semiconductor memory recovers variation in the threshold of a memory cell due to disturbance related to a word line. The nonvolatile memory continuously performs many writing operations without carrying out single-sector erasing after each writing operation, performing the additional writing operations quicker than the usual writing operation, and lightening the burden imposed on software for use in additional writing. The data stored in a designated sector is read out before being saved in a register, and the selected sector is subjected to single-sector erasing when a predetermined command is given. Then write expected value data is formed from the saved data and data to be additionally written, completing the writing operation.