Abstract: A semiconductor memory device is disclosed that includes an ODT circuit configured to be connected to a bus which transmits a data signal or a data strobe signal between a memory block and an input-output terminal; a first switch configured to be inserted into the bus between the memory block and the ODT circuit; a mode controller configured to switch off the first switch during a test of the memory block; and an oscillator configured to be connected to the ODT circuit, wherein a test signal is supplied to the ODT circuit from the oscillator during the test of the memory block.

Abstract: In addition to reflective light modulation devices, reflective polarization plates, a color combining optical device, and support bodies, a projector is provided with connection members fixed to the color combining optical device and for supporting the support bodies. Support positions of the support body by the connection members are disposed on the opposite side to the disposition position of the reflective light modulation device with respect to a plane including a polarization split surface of the reflective polarization plate.

Abstract: A memory error detecting apparatus for detecting an error of a subject memory, the memory error detecting apparatus includes a memory bus connected to the subject memory, a mirror memory connected to the memory bus so as to receive the same data as data to be written into and read from the subject memory, the received data being written into the mirror memory, an address acquiring portion configured to acquire an address related to the data written into the subject memory, a mirror memory controller configured to control data writing or reading to or from the mirror memory on the basis of the acquired address, a comparator configured to compare data read from the subject memory and data read from the mirror memory, and an error detector configured to detect a data error on the basis of a result of the comparison.

Abstract: In a semiconductor storage apparatus, an internal address generation unit generates, when receiving successive first and second external addresses, from the second external address an internal address for selecting any of the memory cells connected to bit lines and word lines except the bit line and word line connected to a memory cell to be selected according to the first external address. When receiving the successive external addresses, a memory cell connected to the same bit line and word line is not continuously selected, and erroneous readout due to rewriting of a value of the memory cell in a non-selected state is suppressed.

Abstract: A multi-projection display system is provided with a plurality of sensor units corresponding to projector units. The sensor units detect brightness for each color in a projected image that is projected on a screen and supply the detection results. The projector unit generates a brightness correction table on the basis of the image signal of a specific picture element of the projected image realized by an adjacent projector unit and on the basis of the brightness of the specific picture element of the projected image of the adjacent projector unit that is detected by a sensor unit for matching the brightness of the image projected by its own projector unit with that of the adjacent projector unit, refers to the brightness correction table to correct brightness for each color of the image signals that are received as input, and projects onto a screen the light of each color in accordance with the corrected image signals.

Abstract: An optical scanning device includes: a first scanning; a first scanning mirror driving unit; a light emission signal output unit; a light receiving unit; and a phase control unit which controls the first scanning mirror driving unit so as to delay a phase of the oscillation of the first scanning mirror when the light receiving unit outputs the detection signal before intermediate time in a case where the light receiving unit does not output the detection signal during a predetermined period of time, the phase control unit controlling the first scanning mirror driving unit so as to advance a phase of the oscillation of the first scanning mirror when the light receiving unit outputs the detection signal after the intermediate time in the case where the light receiving unit does not output the detection signal during the predetermined period of time.

Abstract: A projection screen includes: phosphor regions arranged cyclically in an in-plane direction of a display region; a plurality of black stripes and reference black stripes that partition the display region into the phosphor regions; and an optical information formation unit that is provided in a specific position within the display region and that generates readable optical information.

Abstract: A multi-projection display includes: a plurality of projector units; a plurality of optical sensors that are provided corresponding to each of the projector units; and a main control unit that both causes adjustment images to be projected by each of the projector units and vertically synchronizes each projected adjustment image. Each projector unit acquires by a respective optical sensor brightness values of the picture elements that are adjacent between the adjustment image that is projected by the projector unit and the adjustment images that are projected by other projector units and adjusts the brightness of the projected image based on the differences in the acquired brightness values.

Abstract: A transmission device displays a public image (a first image) provided to unspecified users, a private image (a second image) provided to particular users, and a mask image of the private image in a time division multiplexed manner, and transmits a private image sync signal synchronized with display of the private image. A reception device receives the private image sync signal transmitted from the transmission device and shoots by a shooting unit the private image displayed on the transmission device by using the private image sync signal, and displays the shot image on a display unit.

Abstract: A projector includes a screen having a periodic array of color stripes for producing visible light depending on incident light, a light source that remits a light beam, a projection unit that scans an area of the screen where the color stripes are disposed, with the light beam in a direction across the color stripes, to display an image on the screen, a detector that detects the visible light from each of the color stripes as a feedback light pulse, and a controller that adjusts a start-of-emission timing of the light source based on a start-of-detection timing at which the feedback light pulse is detected by the detector and a detection period during which the feedback light pulse is detected by the detector, and controlling the light source to emit the light beam in order to apply light pulses to the color stripes within boundaries thereof.

Abstract: A projector includes a screen which has color stripes that are periodically arranged and that generate visible light corresponding to incident light. A laser light source section emits a light beam. A laser scanning section scans the light beam on a region of the color stripes arranged on the screen. A light detection section detects feedback light radiated from the screen corresponding to the light beam. A control section adjusts a light emission timing and a light emission period of the laser light source section based on a detection result of the light detection section and causes the laser light source section to emit the light beam such that light pulses enter the individual color stripes.

Abstract: A multi-projection display system is provided with a plurality of sensor units corresponding to projector units. The sensor units detect brightness for each color in a projected image that is projected on a screen and supply the detection results. The projector unit generates a brightness correction table on the basis of the image signal of a specific picture element of the projected image realized by an adjacent projector unit and on the basis of the brightness of the specific picture element of the projected image of the adjacent projector unit that is detected by a sensor unit for matching the brightness of the image projected by its own projector unit with that of the adjacent projector unit, refers to the brightness correction table to correct brightness for each color of the image signals that are received as input, and projects onto a screen the light of each color in accordance with the corrected image signals.

Abstract: An optical switch includes electro-optic crystal, and electrode unit including a plurality of electrodes arranged on the same plane in electro-optic crystal to extend in parallel to one another. A refractive index of a part of electro-optic crystal is changed by an electric field generated at electrode unit, thereby switching transmission and reflection of light incident on electro-optic crystal. Electro-optic crystal has an entrance surface through which light enters and an exit surface from which light exits. Electrode unit is located between the entrance surface and the exit surface. An angle ?x formed between a longitudinal direction of electrodes and at least one surface from among the entrance surface and the exit surface is set near an angle that satisfies the expression ?x=90°?Sin?1[ cos(Tan?1(n))] in a wavelength of light to be modulated.

Abstract: A computer apparatus includes a main memory, a first memory diagnosis unit that determines a faulty area in the main memory by executing a first memory diagnostic program, and a storage unit that stores a relocatable second memory diagnostic program. Moreover, the computer apparatus includes a second memory diagnosis unit, that loads the second memory diagnostic program into areas of the main memory other than the faulty area determined by the first memory diagnosis unit.

Abstract: A memory control device is provided. The memory control device is configured to control access to a storage device including a plurality of storage areas. The memory control device includes a defect detecting unit configured to detect a defective area of a storage area into which data may not be stored. The memory control device also includes a storage processing unit configured to store defect information including address information of the defective area detected using the defect detecting unit into a memory area. A data writing unit is also included in the memory control device. The data writing unit is configured to write data, which has been written into the defective area, into a storage area other than the storage area comprising the defective area based on the defect information stored using the storage processing unit.

Abstract: An information processing device includes a first storage section 2 that includes a plurality of cells to store data; a second storage section 3 that holds refresh intervals and the states of implementation of refresh operations for each of a plurality of the cells; and a control section that controls the refresh operation of each of the cells on the basis of the refresh intervals and the states of implementation of refresh operations held by the second storage section 3. The information processing device controls the refresh operation of each of the cells at refresh intervals set for respective cells.

Abstract: A memory system includes a first memory that is used as a main memory of a target device, a second memory that has an access speed lower than that of the first memory, a securing section that secures a predetermined area of the first memory as a temporary storage area of the second memory, and a memory control section that receives an instruction to write data into the second memory, temporarily stores the data into the first memory and also transfers the stored data from the first memory to the second memory.

Abstract: A test apparatus for testing a memory device including a memory cell. The test apparatus includes a storage and a controller. The storage stores a first value. The controller executes, at a given timing, determining a second value which is a threshold limit value to read data of the memory cell correctly on the basis of an output of the memory cell, calculating a difference between the first value and the second value, outputting a deterioration information on the basis of the difference between the first value and the second value, and updating the first value stored in the storage to the second value.

Abstract: An optical switch changes the refractive index of an electro-optical crystal according to an electric field applied to the electro-optical crystal so as to switch depending on whether the electro-optical crystal enables incident light to pass through or whether the electro-optical crystal enables incident light to be totally reflected. The optical switch includes an electrode section including a plurality of electrodes and formed in the electro-optical crystal, a principal plane including the largest area of each electrode on a same plane of the electro-optical crystal; an insulator layer on at least one plane of the electro-optical crystal, the plane being parallel with the electrode section, the insulator layer made of an insulator with lower dielectric constant than the electro-optical crystal; and a temperature control device formed on and in contact with the insulator layer and controls a temperature of the electrode section or dissipates heat generated in the electrode section.

Abstract: In a semiconductor storage apparatus, an internal address generation unit generates, when receiving successive first and second external addresses, from the second external address an internal address for selecting any of the memory cells connected to bit lines and word lines except the bit line and word line connected to a memory cell to be selected according to the first external address. When receiving the successive external addresses, a memory cell connected to the same bit line and word line is not continuously selected, and erroneous readout due to rewriting of a value of the memory cell in a non-selected state is suppressed.