Abstract: An apparatus includes a polarity reversing section which generates a polarity reversing signal for the liquid crystal drive voltage; a liquid crystal driver which reverses the polarity of the liquid crystal drive voltage based on the polarity reversing signal to drive the liquid crystal display panel; a warning signal generation section which generates a warning signal indicating the polarity reverse before the polarity of the liquid crystal drive voltage is reversed; and a regulator section which controls a supply of the liquid crystal drive voltage in accordance with the warning signal.

Abstract: An information processing apparatus has a resistance film type touch panel generating position coordinate data at a predetermined sampling interval, a liquid crystal display panel driven by a liquid crystal drive voltage, a first control circuit having a first generating circuit generating a horizontal synchronizing signal, a second generating circuit generating an alternating current signal for reversing the polarity of the liquid crystal drive voltage based on the horizontal synchronizing signal, and a third generating circuit generating a noise warning signal based on the horizontal synchronizing signal, the noise warning signal telling the interval at which the polarity of the liquid crystal drive voltage reverses; and a second control circuit changing the predetermined sampling interval based on the noise warning signal and detecting a position coordinate input from the resistance film type touch panel at the changed predetermined sampling interval.

Abstract: An apparatus includes a polarity reversing section which generates a polarity reversing signal for the liquid crystal drive voltage; a liquid crystal driver which reverses the polarity of the liquid crystal drive voltage based on the polarity reversing signal to drive the liquid crystal display panel; a warning signal generation section which generates a warning signal indicating the polarity reverse before the polarity of the liquid crystal drive voltage is reversed; and a regulator section which controls a supply of the liquid crystal drive voltage in accordance with the warning signal.

Abstract: An image processor realizing noise removal and contour line emphasis simultaneously. A high-pass filter (1) outputs the high-pass components h(m,n) of input image data f(m,n). An emphasis control amount deriving section (2) determines an emphasis control amount e(m,n) by subjecting the input image data to discrete wavelet conversion. A multiplying section (3) determines and outputs the product of the emphasis control amount e(m,n) from the emphasis control amount deriving section (2) and the high-pass components h(m,n) from the high-pass filter (1) for each pixel. An amplifying section (5) multiplies the output from the multiplying section (3) by a fixed factor (? times). An adding section (4) adds the product from the multiplying section (3) and the image data to produce output image data.

Abstract: An information processing apparatus has a resistance film type touch panel generating position coordinate data at predetermined sampling interval, a liquid crystal display panel driven by a liquid crystal drive voltage, a first control circuit (liquid crystal display panel control circuit) having a first generating circuit generating a horizontal synchronizing signal, a second generating circuit generating an alternating current signal for reversing the polarity of the liquid crystal drive voltage based on the horizontal synchronizing signal, and a third generating circuit generating a noise warning signal based on the horizontal synchronizing signal, the noise warning signal telling the interval at which the polarity of the liquid crystal drive voltage reverses; and a second control circuit (resistance film type touch panel control circuit) changing the predetermined sampling interval based on the noise warning signal and detecting a position coordinate inputted from the resistance film type touch panel at t