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Gas concentration sensing apparatus
A gas concentration sensor comprises a pump cell for detecting an oxygen concentration in an exhaust gas and a sensor cell for detecting a NOx concentration in...
Method of making update information of map data and differential data of
map data updating system
A differential update method for vehicular navigation apparatus, which can precisely update map data stored in a storage medium to up-to-date contents. When a...
Magnetoresistive type position detecting device
In a position detecting device for a moving object, such as a camshaft gear, having ridges and valleys, magnetoresistive elements are disposed in positions...
Piezoelectric laminate body
This invention provides a piezoelectric laminate body that limits, to a minimum, the difference of the quantity of displacement occurring in the boundary between...
Silicon carbide semiconductor device
A vertical type power MOSFET made of silicon carbide includes a surface channel layer doped with nitrogen as dopant with a concentration equal to or less than...
Insulated gate bipolar transistor and method of fabricating the same
An IGBT having a buffer layer for shortening the turn-off time and for preventing the latching up is improved. The buffer layer of the present invention is not...
Molten metal vessel for filtering impurities
A molten metal vessel includes a first chamber for containing molten metal such as molten aluminum therein, a filtration chamber in which impurities contained in...
Method and apparatus for fabricating high quality single crystal
A crucible for growing a single crystal therein has a seed crystal attachment portion and a peripheral portion surrounding the seed crystal attachment portion...
Respiratory disease monitoring system
A respiration monitoring system monitors the state of disorder of the respiratory system of a sleeping patient based on the detection of respiratory body...
Semiconductor physical quantity sensor
A semiconductor angular velocity sensor has a frame-shaped base portion, a detection oscillator connected to the base portion through a detection beam portion,...
Semiconductor physical quantity sensor
A semiconductor physical quantity sensor from which a stable sensor output can be obtained even when the usage environment changes. A silicon thin film is...
Capacitive physical quantity detection device
A capacitive semiconductor acceleration sensor capable of efficiently performing a self-diagnostic procedure without having to provide any separate electrodes...
Micro-heater and airflow sensor using the same
An airflow sensor including a micro-heater having a film structure, which can reduce a warpage of the film structure even when a thick ness of the film structure...
Tire air pressure warning device
In a tire air pressure warning device, an outside impact such as hydraulic brake pressure is intentionally applied in a pulsating way to a tire when the vehicle...
Air passage controlling system for air conditioning apparatus
An air passage controlling system for selecting an air outlet mode of an air conditioning apparatus includes a driving shaft, an intermediate shaft, a driven...
Refrigerant evaporator with refrigerant distribution
An evaporator has plural tubes arranged in parallel with each other in a width direction perpendicular to an air flowing direction. The tubes are further...
Method for interconnecting printed circuit boards and interconnection
In interconnecting printed circuit boards: preparing a first and second printed circuit board is accomplished with the first having an insulating substrate of...
Lane mark recognition system and vehicle traveling control system using the
A lane mark recognition apparatus for a vehicle is provided which recognizes a lane mark printed on a road using an image of a frontal view captured by a CCD...
Safety tilt mechanism for portable telephone including a speakerphone
A portable telephone with a speakerphone with a safety mechanism. This portable telephone is prevented from entering speakerphone mode unless the device is...
Stereoscopic image display device
A device for displaying a stereoscopic image in which cross-talk is suppressed. A left eye image and a right eye image alternately displayed on a liquid crystal...
Rotation-angle-detection device having magnetic sensor fixed to cover with
detection direction transverse to...
A rotation-angle-detection device includes a main housing, a resinous cover for covering an opening of the main housing, a permanent magnet disposed at the main...
A semiconductor device which improves heat radiation performance and realizes size reduction and enables heat to be radiated swiftly from both of the principal...
Semiconductor acceleration sensor
A semiconductor sensor chip is provided with a weight portion supported in a frame via beams whereby acceleration up to substantially .+-.1 G can be detected by...
Metal mold for molding a honeycomb structure and method of producing the
A method of producing a metal mold for molding a honeycomb structure, wherein the slit grooves are formed by electric discharge machining that is executed a...
Manufacturing method of semiconductor device
A semiconductor substrate has a trench for forming a gate insulation film and a gate electrode therein, or an insulated isolation isolating a semiconductor...
Organic electroluminescent panel
An organic electroluminescent panel having two luminescent layers interposed between a pair of electrode layers emits white light or colored light. One...
Thermoplastic polyester resin composition
To provide a thermoplastic polyester resin composition which has a very good durability to alkaline solutions for a long period of time. That is, a thermoplastic...
Method of welding composite member
A method of welding a hollow member and an insert member to form a composite member including a hollow member and insertion member requiring a high dimensional...
Gas concentration measuring apparatus producing current signals as a
function of gas concentration
A gas concentration measuring apparatus is provided which may be employed in measuring an air-fuel ratio of mixture sucked into automotive engines. The apparatus...
Engine control unit using pulses of different frequencies
In an engine control unit, a pulse interval in a crank signal having a pulse missing portion is measured. On the basis of the measured pulse interval, frequency...
Vehicle control apparatus having multiple ECUs loaded with respective
A vehicle control apparatus has multiple electronic control units, A-ECU and B-ECU, connected via a communication line. Control programs of the apparatus is...
Capacitive moisture sensor and fabrication method for capacitive moisture
A capacitive moisture sensor is made from an SOI, i.e., silicon-on-insulator, substrate. Two electrodes, between which moisture-sensitive material is interposed,...
Method of detecting a radar characteristic, a radar characteristic,
detection apparatus, and a recording medium...
A radar wave reflected by a preceding automotive vehicle is received. The distance and the reception level of the received radar wave are repeatedly stored with...
Cyclic battery charger using continuous battery discharge
A cyclic battery charger reduces the formation of the ionic barrier in a battery. The battery charger applies a current to the battery for a first period of...
Semiconductor sensor device and method of manufacturing the same
Plural semiconductor chips such as acceleration sensor chips formed on the first surface of a substrate are separated into individual pieces by dicing the...
Hydrogen storage unit
A hydrogen storage unit is provided with a hydrogen storage container containing a hydrogen absorption material, and a filter portion for eliminating impurities...
Hybrid type compressor driven by engine and electric motor
A hybrid type compressor is provided that is drivable by an electric motor and an external driving source. The hybrid type compressor includes a housing and a...
Hydraulic actuator for an anti-lock braking system
A cup-shaped diaphragm is inserted into a bore formed in a housing. An inlet opening of the bore is closed by a plug-like wall member. A conduit line extends...
Brake system having brake assist feature
A brake system includes first brake assist means arranged in a first brake circuit to increase a first wheel cylinder pressure to a level higher than a master...
Leakage restriction device for refrigeration cycle
A leakage restriction device for a refrigeration cycle of a vehicle air conditioner in which refrigerant flows has first and second rubber gaskets. The first and...
Starter having improved electromagnetic switch
An electromagnetic switch for controlling an electric power supply to a starting motor is located in the periphery of one side of an output shaft in a radial...
Gas concentration measuring apparatus compensating for error component of
A gas concentration measuring apparatus is provided which measures the concentration of two kinds of gas components such as O.sub.2 and NOx contained in exhaust...
Airtime usage limiting system
A call time usage system for a portable telephone allows entering call time usage information into the portable telephone. The limits include limits on total...
Electronic control unit having connector positioned between two circuit
The electronic control unit controls operation of actuators connected thereto based on sensor signals fed thereto and processed therein. The unit includes a...
Discharge lamp apparatus
In a discharge lamp apparatus for a vehicle, it is determined that a grounded condition is present when a lamp voltage is less than a predetermined voltage and a...
Air conditioning apparatus with detachable filter
A filter for a vehicle air conditioning apparatus is composed of only a filter medium, and is disposed in a case. A first support member supports a peripheral...
Vehicle braking apparatus and vehicle braking method
In attaining a target vehicle braking force corresponding to a pedal depression force, an assigned braking force is obtained by subtracting a minimum braking...
Semiconductor device with elements surrounded by trenches
Pch-MOS transistors to which a power supply potential is applied are respectively surrounded by first trenches, and Nch-MOS transistors to which a ground...
Fluid injection nozzle
At fuel downstream end of a valve body, there is arranged an injection port plate formed into a thin disc shape. In the injection port plate, there are formed...
Valve timing adjusting system of internal combustion engine
An effective range of urging force of an assist spring is between a maximum retarded phase and a predetermined phase of a camshaft, a vane rotor and vanes. The...