Abstract: The invention provides a semiconductor apparatus provided with at least one set of buried channel type first conductive type MOS transistor and surface channel type first conductive type MOS transistor on the same substrate, in which a first conductive type impurity region is provided below a gate electrode of the buried channel type and surface channel type MOS transistors and between source drain regions. Further, the invention provides a solid state image pickup device having a photoelectric conversion portion and a pixel including a plurality of transistors formed in correspondence to the photoelectric conversion portion, in a substrate, wherein the plurality of transistors includes a buried channel type first conductive type MOS transistor and a surface channel type first conductive type MOS transistor, and a first conductive type impurity region is provided below a gate electrode of the buried channel type and surface channel type MOS transistors and between source drain regions.

Abstract: It is an object of the present invention to provide a small, yet high sensitivity semiconductor device. A semiconductor pressure sensor 1 includes an SOI substrate 2 on which a diaphragm 3 is formed and four piezo resistor elements R1 to R4 provided on the SOI substrate 2. Of the piezo resistor elements R1 to R4, two mutually facing piezo resistor elements R1 to R4 are arranged across the inside and outside of the diaphragm 3 so as to satisfy a relationship of 0.5<Leff/L<1, where L is the overall length and Leff is the length from the inside to edge of the diaphragm 3.

Abstract: A sheet feeding device is operable to feed a sheet medium to an image forming apparatus. A cassette chamber has an inner face. A cassette member is adapted to accommodate the sheet medium therein, and to be withdrawably inserted into the cassette chamber in a first direction. The cassette member has an outer face adapted to oppose the inner face of the cassette chamber when the cassette member is inserted into the cassette chamber. At least one recess is formed on one of the inner face of the cassette chamber and the outer face of the cassette member. At least one protrusion is formed on the other one of the inner face of the cassette chamber and the outer face of the cassette member, and adapted to be fitted with the recess when the cassette member is plenarily inserted into the cassette chamber.

Abstract: A photoelectric conversion device comprising a semiconductor substrate of a first conduction type, and a photoelectric conversion element having an impurity region of the first conduction type and a plurality of impurity regions of a second conduction type opposite to the first conduction type. The plurality of second-conduction-type impurity regions include at least a first impurity region, a second impurity region provided between the first impurity region and a surface of the substrate, and a third impurity region provided between the second impurity region and the surface of the substrate. A concentration C1 corresponding to a peak of the impurity concentration in the first impurity region, a concentration C2 corresponding to a peak of the impurity concentration in the second impurity region and a concentration C3 corresponding to a peak of the impurity concentration in the third impurity region satisfy the following relationship: C2<C3<C1.

Abstract: There is provided an electron-emitting device of a field emission type, with which the spot size of an electron beam is small, an electron emission area is large, highly efficient electron emission is possible with a low voltage, and the manufacturing process is easy. The electron-emitting device includes a layer 2 which is electrically connected to a cathode electrode 5, and a plurality of particles 3 which contains a material having a resistivity lower than that of a material constituting the layer 2, and is wherein a density of particles 3 in the layer 2 is 1×1014/cm3 or more and 5×1018/cm3 or less.

Abstract: A frequency setting circuit includes a table storing, in an address corresponding to a channel number, a quotient and a remainder calculated by subtracting 1 from the channel number to calculate a difference and dividing the difference by 3 are stored in bits b7 to b3 and bits b1 to b0, respectively. When the channel number is designated by a channel setting unit, a value of the bits b1 to b0 is decoded and given to a selector as a selection signal. A frequency set value of twelve bits of lower-order four digits is selected and output from the selector.

Abstract: The present invention, in a photoelectric conversion device in which a pixel including a photoelectric conversion device for converting a light into a signal charge and a peripheral circuit including a circuit for processing the signal charge outside a pixel region in which the pixel are disposed on the same substrate, comprising: a first semiconductor region of a first conductivity type for forming the photoelectric region, the first semiconductor region being formed in a second semiconductor region of a second conductivity type; and a third semiconductor region of the first conductivity type and a fourth semiconductor region of the second conductivity type for forming the peripheral circuit, the third and fourth semiconductor regions being formed in the second semiconductor region; wherein in that the impurity concentration of the first semiconductor region is higher than the impurity concentration of the third semiconductor region.

Abstract: A photoelectric conversion device comprising a semiconductor substrate of a first conduction type, and a photoelectric conversion element having an impurity region of the first conduction type and a plurality of impurity regions of a second conduction type opposite to the first conduction type. The plurality of second-conduction-type impurity regions include at least a first impurity region, a second impurity region provided between the first impurity region and a surface of the substrate, and a third impurity region provided between the second impurity region and the surface of the substrate. A concentration C1 corresponding to a peak of the impurity concentration in the first impurity region, a concentration C2 corresponding to a peak of the impurity concentration in the second impurity region and a concentration C3 corresponding to a peak of the impurity concentration in the third impurity region satisfy the following relationship: C2<C3<C1.

Abstract: A plurality of liquid crystal modulation electrodes is arranged in matrix on a semiconductor substrate 28, a light transmitting substrate 47 with a transparent electrode 23 and a semiconductor substrate are laminated together with liquid crystal interposed therebetween, the semiconductor substrate is connected to a flexible printed board 25 electrically connecting to an external, the transparent electrode is connected to the wiring of the flexible printed board not through the semiconductor substrate and the wiring is connected to the semiconductor substrate, thereby the transparent electrode is electrically connected to the semiconductor substrate. The semiconductor substrate 28 is provided with an anti-electrostatic protection circuit and the transparent electrode is connected to the anti-electrostatic protection circuit through the wiring.

Abstract: In order to suppress the effect due to electrons (holes) generated by incident light that cannot be prevented from entering only by means of light shielding, rather than the drain region 34 of a transistor, with respect to a majority carrier, a region 36 whose voltage is set to a value lower than the reference value of product of the voltage of a drain region and Q (unit electric charge) is provided, or a potential barrier is provided around the drain region. In such a configuration, by controlling the voltage of the periphery of the drain region 34 connected to a reflection electrode 30 to be in a floating state, photo carriers generated in the semiconductor substrate are caused to be hardly guided in the drain region 34.

Abstract: Disclosed are a low-cost circuit, a communication apparatus and a method for correcting a clock and for application to a specific radio system with low electric power consumption. The communication apparatus comprises: a frequency data storage circuit for storing frequency set values corresponding to respective channels to output a frequency set value corresponding to a channel specified by a channel selection signal; a frequency correction circuit for calculating a frequency control value by performing a calculation using both the frequency control value and a frequency correction value determined in accordance with an ambient temperature; a voltage controlled oscillator for generating a first frequency based on a clock signal; and a PLL circuit for generating a desired second frequency by performing a calculation using the first frequency and the frequency control value.

Abstract: The present invention provides a data transmitting/receiving apparatus that determines according to a signal strength of a received radio wave whether a receiving operation should be continued, and a control method thereof. In the data transmitting/receiving apparatus, a measurement unit in a transmitter-receiver counts demodulation clocks of a demodulator. The measurement unit supplies a result of measurement indicating instability of reception data until the counted number thereof reaches a predetermined target count value and indicating stability of the reception data after its attainment to a determinator. When the determinator receives the result of measurement indicative of the instability of the reception data therein, the determinator outputs a result of determination indicative of the stop of a receiving operation regardless of a signal strength.

Abstract: The present invention provides a data transmitting/receiving apparatus which determines whether received data is destined therefor, and a received data analysis method thereof. In the data transmitting/receiving apparatus, a comparison circuit in a transmitter-receiver outputs any of real data related to part of reception data and all data related to all thereof in accordance with a reception data selection signal and supplies the same to a control circuit. Therefore, only the data necessary for reception processing by the control circuit is supplied, whereby the time required to perform a receiving operation by the present apparatus can be shortened and the efficiency of the receiving operation can be enhanced.

Abstract: An object is to be able to correct a shift even when the shift occurs in the light beam incident on a spatial light modulator in an optical information recording apparatus such as a hologram memory system and the like using the spatial light modulator having an area to modulate information beam. Hence, a shift amount detector is provided, which detects a shift of the light beam incident from a first light source on the spatial light modulator (modulator/light sensing device). Based on the shift amount detected by the shift amount detector, a position of the information beam modulating area in the spatial light modulator is shifted from an initial position.

Abstract: A holographic memory system comprises a spatial light modulator having multiple modulators for spatially modulating at least a part of a light beam emitted from a light source and rendering it as an information light beam, and a light sensing device for reading the information light beam taken out of a recording medium. The spatial light modulator and the light sensing device are integrally formed on the same substance.

Abstract: The invention provides a low-cost screw rotor that is capable of compressing gas. As exemplified in FIG. 4, screw rotors (26, 27) comprise: upstream screw section (43a) defined on the upstream side of the gas travel path with screw thread (41a) identically positioned at the same interval, and downstream screw section (43b) connecting to the downstream side of upstream screw section (43a) along the gas travel path, where threads (41b) on the downstream screw section are arranged continuously with identical pitch smaller than threads (41a) on the upstream screw section; and the upstream end of the downstream screw thread (41b) along the gas travel path and the downstream end of upstream screw thread (41a) along the gas travel path are continuously connected at a yielding point (43c).

Abstract: An integrated circuit includes a volatile memory, a central processing unit that normally operates on a first clock, and an input-output circuit that transfers data in synchronization with a second clock having a lower frequency than the first clock. The integrated circuit has a power-saving mode in which the volatile memory loses its data and the central processing unit stops operating. The power-saving mode is preceded and followed by transitional periods during which the central processing unit uses the input-output circuit to save data from the volatile memory to an external memory device and restore the data from the external memory device to the volatile memory. During these transitional periods, the central processing unit operates on the second clock to conserve power.

Abstract: A radio communication method includes deciding either a sending timing or a receiving timing; measuring a receiving electric intensity; comparing a stored value and the measured receiving electric intensity; and starting a sending operation when the measure receiving electric intensity is smaller than the stored value in the sending timing and starting a receiving operation when the measurement receiving electric intensity is greater than the stored value in the receiving timing.

Abstract: A frequency setting circuit includes a table storing, in an address corresponding to a channel number, a quotient and a remainder calculated by subtracting 1 from the channel number to calculate a difference and dividing the difference by 3 are stored in bits b7 to b3 and bits b1 to b0, respectively. When the channel number is designated by a channel setting unit, a value of the bits b1 to b0 is decoded and given to a selector as a selection signal. A frequency set value of twelve bits of lower-order four digits is selected and output from the selector.

Abstract: Wireless communications apparatus is provided by which power consumption is much more reduced in a wireless system composed of a base station and wireless terminal stations. The apparatus installed in the base station includes a transmitter/receiver and a controller. The transmitter/receiver compares an RSSI value indicating the received wave strength of a received wireless signal with a preset value periodically at time intervals set in a timer for defining a time to start and stop the controller. When the RSSI value indicates that the received wave strength is higher than the preset value, the controller is made operative, and then the demodulated received data of the received signal are sent to the controller. The controller operates when the preset value is set in the transmitter/receiver, and analyzes the received data when the received wave strength has exceeded the preset value.