Abstract: A line buffer unit stores the pixel values of image data for respective lines in synchronism with pixel clocks and a horizontal sync signal. An output counter generates a coordinate value to specify a pixel position in second image data based on the count value of predetermined clocks and the horizontal sync signal, and a data request unit converts the generated coordinate value into a pixel position in input image data on the basis of the set scale value. The pixel values of pixels required for arithmetic operations are acquired from the line buffer unit based on this pixel position, and an arithmetic unit calculates the pixel value of a pixel corresponding to the coordinate value. When the arithmetic unit is not ready to execute the arithmetic operation of the pixel value, generation of the coordinate value by the counter is stopped until the arithmetic unit is ready to execute the operation.

Abstract: A system and process for directing a laser beam within a space is presented. The system includes a pointing device which periodically outputs orientation data indicative of the direction it is pointing and a cursor device which projects a laser beam. The orientation data is used to compute the direction the pointing device is pointing in terms of yaw and pitch angles. The laser beam is directed to locations in the space relative to the amount of movement of the pointing device. In an absolute mode, the pointed device and the laser beam of the cursor device are pointed at the same location in the space, whereas in a relative mode, the pointing device does not point at the same location as the laser beam. The position of the laser can be used to select a variety of hardware devices known to be in a room for future control actions.

Abstract: In an image display apparatus of the present invention, at a predetermined timing, a characteristic data setting module actuates a reference image signal generation module to generate an analog reference image signal, based on reference image data prepared in advance. The characteristic data setting module then controls a signal selector module to select the analog reference image signal. An A-D converter module converts the analog reference image signal selected by the signal selector module into a digital image signal according to preset characteristic data. The characteristic data setting module adjusts the characteristic data set in the A-D converter module to make image data expressed by the digital image signal input from the A-D converter module into an image conversion processing module approach to the reference image data. This arrangement ensures easy adjustment of the operating characteristics of the image display apparatus.