Abstract: In a stoichiometric operation mode after a lean operation mode, a control unit sequentially generates data representing an estimated value of an output VO2/OUT of an O2 sensor after the dead time of an exhaust system, and at the same time generates a target air-fuel ratio KCMD for an exhaust gas upstream of a catalytic converter in order to converge the estimated value to a predetermined target value. The air-fuel ratio of the exhaust gas is controlled at the target air-fuel ratio KCMD. In the stoichiometric operation mode, the reduced state of NOx in the catalytic converter is recognized based on the estimated value of the output of the O2 sensor, and whether the stoichiometric operation mode is to switch to the lean operation mode or not is determined depending on the reduced state of NOx in the catalytic converter.
Abstract: A semiconductor device for reliably detecting an erroneous entry into a test mode in ordinary usage and for performing various operational tests at the time of shipment includes an internal circuit and a test-mode control circuit. The test-mode control circuit includes a first control circuit and a second control circuit. The test-mode control circuit operates the internal circuit in the test mode in accordance with a test mode command. The first control circuit inactivates at least a part of the internal circuit in accordance with the test mode command. The second control circuit activates at least the part of the internal circuit in accordance with a release command supplied following the test mode command.
Abstract: A mobile communication system includes a first and second systems. Each of the first and second systems has a land station and at least one mobile terminal capable of communicating with the land station. The land station of the first system has a broadcasting channel transmission unit for transmitting status information via a broadcasting channel, and the mobile terminal of the second system has a broadcasting channel receiving unit for receiving information in the broadcasting channel to obtain a broadcasting channel receiving condition and the status information, a giving interference estimation unit for estimating giving interference level onto communication of the first system by the second system based upon the obtained broadcasting channel receiving condition and the obtained status information, and an output signal level control unit for controlling output signal level of the mobile terminal of the second system based upon the estimated giving interference level.
Abstract: A device for controlling the interaction of a tip and a sample includes a deformable element carrying the tip and means for positioning the tip with respect to the sample. The device also includes at lest two electrodes for creating an electrical field that exerts a force. The deformable element is preferably elastically deformable and includes advantageously a cantilever. According to a method for controlling the interaction of a tip and a sample, the tip carried by a deformable element is positioned with respect to the sample and the interaction of the tip and the sample is controlled by creating an electric field using a voltage between at least two electrodes. This electrical field exerts a force on the tip. Applications are to atomic force microscopy (AFM) and to nano-indentation measurements.
Type:
Grant
Filed:
January 13, 2000
Date of Patent:
February 26, 2002
Assignee:
Universite Pierre & Marie Curie
Inventors:
Christian Fretigny, Denis Michel, Benjamin Brocart, Charlotte Basire
Abstract: A semiconductor device includes a timing-stabilization circuit which adjusts a phase of the synchronization clock signal. The semiconductor device further includes a control circuit which suspends the adjustment of the phase of the synchronization clock by the timing-stabilization circuit during a time period when the data is output from an output circuit.
Abstract: A synchronous semiconductor memory apparatus is capable of activating an input buffer circuit only in a required operating cycle and achieving low current consumption without degrading high speed response properties of an input buffer. When combination of control signals (Control) such as /CS, /RAS, /CAS, /WE and the like is directed to active command (ACTV), read command (READ, READA), write command (WRITE, WRITEA), mode register command (MRS), pre-charge command (PRE) and the like, a latch operation is dynamically performed for input from address pins. In this way, in the case where a signal iRAS is set at a low level, a latch signal aCLK is output to the rising edge of a signal iCLK, thereby latching addresses Add or the like. Alternatively, in the case where a signal iRAS or iCAS is set at a low level, the latch signal aCLK is output to the rising edge of the signal iCLK, thereby latching addresses Add or the like.
Abstract: A water sprinkling apparatus for an ice making machine. The sprinkling apparatus includes a spray tube formed by two snap fit parts from which water flows over onto vertical evaporator plates in the ice making machine. The open top channel body permits the water to flow easily as well as having the apparatus cleaned in a simpler and more efficient manner. Furthermore, particle buildup as well as clogging of apertures is eliminated, thereby maintaining continuity of flow and simplifying maintenance.
Abstract: An image processing apparatus comprises an image memory comprising a first storing area for storing first image data for a background and a second storing area for storing second image data for an on-screen-display; a display buffer memory for storing data in a format used for display based on the first and second image data read from the image memory; and a controller for controlling accesses to the image memory and the display buffer memory, the controller reading the first image data from the first storing area in the image memory and writing the first image data into the display buffer memory and reading the second image data from the second storing area in the image memory and writing the second image data into a designated area in the display buffer memory.
Abstract: A water tank including a frusto-conical support hat portion and a tub portion. The tub portion having a support mound that includes a first section and a second section extending from the first section. The first section has a width larger than a width of the second section such that a ledge is formed between the first and second sections. The second section has a rectangular aperture formed therein that permits the manufactured ice to pass therethrough. The support hat portion has a support mound that has a width no larger than the width of the first section. An integral support system includes the support hat nestingly engaging the tub portion from a bottom portion of the tub portion to provide a central support for an ice guide placed on the water tank.
Type:
Grant
Filed:
December 8, 2000
Date of Patent:
February 26, 2002
Assignee:
Hoshizaki America, Inc.
Inventors:
Mark Barnett, Glenn O'Neal Melton, Kazuhiro Yoshida
Abstract: A reductive dimerization process of 1,1,1-trifluoro, 2,2,2-trichloroethane (CFC-113a) with hydrogen, with formation of 1,1,1,4,4,4-hexafluoro-2,2,3,3-tetrachlorobutane and 1,1,1,4,4,4-hexafluoro-2,2-dichlorobutene, and mixtures thereof, wherein the catalyst is constituted by metal ruthenium supported on graphitized carbon obtainable by treatment of the carbon at temperatures higher than 2000° C., in inert gas, or aluminum fluoride having an high surface area.
Type:
Grant
Filed:
February 2, 2000
Date of Patent:
February 19, 2002
Assignee:
Ausimont S.p.A.
Inventors:
Paolo Cuzzato, Ornella Majaron, Francesco Pinna
Abstract: A bolt retaining device for a nutrunner which includes a socket having a longitudinal axis and being sized to fit the bolt, the device having an electromagnet positioned with respect to the socket to generate a magnetic field directed along the axis of the socket to hold the bolt in the socket when the field is present, and a controller connected to the electromagnet controlling the magnetic field. The bolt retaining device wherein the electromagnet is a coil co-axially mounted with respect to the socket. Each nutrunner can include a motor, a socket, and a shaft connecting the motor to the socket. One or more nutrunners can be provided on a movable frame.
Abstract: A solenoid valve device which reduces noise and still conducts opening and closing operation. The solenoid valve device, installed in a brake fluid channel between a master cylinder and a wheel cylinder, includes a master cylinder port connected to a channel located at the master cylinder side, a wheel cylinder port connected to a channel located at the wheel cylinder side, a hydraulic chamber connected to a high resistance duct and the master cylinder port, a switching valve activated due to a hydraulic pressure difference between the hydraulic chamber and the wheel cylinder port to form an orifice; and a solenoid valve, installed in a channel connecting a switching valve and the wheel cylinder port, which opens or closes the channel by application of an electromagnetic force.
Abstract: In an image display system using an organic EL element, variation of light intensity of pixels on a display panel due to variation of characteristics of a bias transistor for energizing said EL element is improved. An active layer of said bias transistor is formed by polysilicon, and length and width of a gate of said transistor is at least 10 times as large as average diameter of a crystal grain of polysilicon in said active layer.
Type:
Grant
Filed:
February 2, 1999
Date of Patent:
February 19, 2002
Assignees:
TDK Corporation, Semiconductor Energy Lab Co., Ltd.
Abstract: Disclosed herein is an evaporative emission control system which can prevent changes in fuel component in the fuel tank and vacuum boiling in the fuel pump to thereby accurately control the air-fuel ratio to a desired value and ensure smooth supply of the fuel. The control system includes an evaporative fuel passage for connecting a fuel tank and an intake system of an internal combustion engine, and a control valve is provided in the evaporative fuel passage for opening and closing the evaporative fuel passage. It is determined whether or not a fuel temperature is higher than or equal to a predetermined fuel temperature. If the fuel temperature is higher than or equal to the predetermined fuel temperature, the opening operation of the control valve is disabled.
Abstract: An automatic transmission comprises a plurality of clutches 11˜15, which are provided to select power transmission paths, respectively, in a parallel shaft speed change mechanism TM and a plurality of shift valves 60˜68, which are used for controlling the supply and drain of hydraulic oil to and from these clutches. For this automatic transmission, a control system comprises a plurality of solenoid valves 81˜85, which are used for controlling the supply and drain of a line pressure so as to control the actuation of these shift valves. This system, when the shift lever is manipulated to set the neutral range, sets the transmission into either a first neutral mode or a second neutral mode depending upon the speed of the vehicle, the first neutral mode being set when the vehicle is driving at a speed equal to or more than a critical speed, and the second neutral mode being set when the vehicle speed is less than the critical speed.
Abstract: A semiconductor memory device, which refreshes memory cells to retain data, has a first refresh mode and a second refresh mode. The first refresh mode is a mode for refreshing all of the memory cells, and the second refresh mode is a mode for refreshing a part of the memory cells. By refreshing only designated areas where data must be retained, power consumption in a refresh operation can be reduced, drastically cutting power consumption in a power-down mode.
Abstract: A TV signal that was scrambled and transmitted from a CATV center is tuned by a TV tuner for a parent unit or a TV tuner for a child unit based on a command received from a microprocessor. The tuned TV signal is input to a descrambler provided in the parent unit. The descrambler descrambles the scrambled TV signal. The descrambled TV signal is input to a synthesizing unit for the parent unit or a synthesizing unit for the child unit. When the parent unit or the child unit cannot receive a desired pay channel program, the microprocessor causes a character generating unit to generate a message that indicates that a pay channel program cannot be watched. This message is synthesized with a TV signal by the synthesizing unit for the parent unit or the synthesizing unit for the child unit and then output to a TV receiver of the parent unit or a TV receiver of the child unit.