摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
The control unit 21 takes in a test command and expected value data from input terminals 11 and 12 respectively, to output via an internal bus 30 the command to the function block 31 etc. and the expected value data to a decision unit 40. A processing result of the function block 31 etc. is provided to the decision unit 40, where it is compared to the expected value data in order to decide acceptability of the function block 31 etc. The decision result is held in an output unit 50 and output from an output terminal 104 etc. Such a configuration provides a semiconductor integrated circuit which can easily adjust the timing in a test operation mode and reduce the number of external terminals.
摘要:
A field emission electron-emitting device in which an electron beam diameter is small and an electron emission area is large, with which highly efficient electron emission is possible at a low voltage, and which can be easily manufactured. Also provided is an electron source and an image-forming apparatus that use the electron-emitting device. An opening is formed to penetrate through a first electrode layer and a first insulating layer, and a second insulating layer is included in the opening. The second insulating layer is provided with an opening having a taper such that an opening area gradually decreases from the first electrode layer side to the second electrode layer side. A third electrode layer is provided between the second insulating layer and the second electrode layer. The third electrode layer is also provided with an opening, in which an electron-emitting layer comprised of an electron-emitting material is formed.
摘要:
There are provided a method of properly driving an electron source, in matrix driving in which each signal line and scanning line have large capacitance and are capacitively coupled to disturb each other, without any influence of the disturbance, an electron source using the driving method, an image-forming apparatus, and a method of driving the image-forming apparatus. In an electron source made up of electron-emitting devices each having a gate electrode and cathode electrode, in performing passive matrix driving operation of driving a plurality of signal lines together after selecting a scanning, letting V1off be the OFF voltage of the scanning line and V2on be the ON voltage of a signal line, V1off>V2on−. In addition, V1off−V2on is set to be large enough to prevent a gate/cathode voltage from changing to the ON region during an OFF period even if the voltage changes due a disturbance caused by driving. Letting V1on be the ON voltage of a scanning line and V2off be the OFF voltage of a signal line, V1on>V2off and V1off−V2on>V1on−V2off.
摘要:
A small-size liquid crystal capable of exhibiting good color balance and light utilization efficiency is formed of a layer of liquid crystal, two-dimensionally arranged pixel electrodes disposed so as to apply voltages to the liquid crystal and, together with the liquid crystal, form two-dimensionally arranged pixels each corresponding to one pixel electrode and designed to emit light of one of a plurality of colors, and an array of microlenses disposed to illuminate each pixel with a condensed light spot of illumination light of one of the plurality of colors. In the device, pixels of at least one of the plurality of colors are set to have a pixel size different from those of pixels of the other color(s).