Abstract: As a result of being provided with an enable signal generating unit that supplies, to an LED driver, an enable signal that is dependent on a low state period of a PWM signal, it is possible to realize a light emitting diode driver circuit that can suppress a booster circuit starting up suddenly and an excess current flowing in a power source in the case where the PWM signal enters a high state (on state) after having been held in a low state (off state) for a prescribed period or longer.

Abstract: The present invention is arranged such that interlace image data, which has been supplied, is converted to progressive image data in an I/P conversion section, and the image data converted to progressive style in the I/P conversion section is subjected to image processing including data comparison in spatial or time series manner, in an image processing section.

Abstract: It is an object of the invention to reduce a leakage low-frequency electric field from a panel section of a matrix type. In the case where a panel section has a usual current structure in which the panel section has a single common electrode elongating over the whole of the display region of the panel section, the maximum voltage difference of a reference signal supplied to the common electrode is defined to be 0.3678×x−0.6136 (wherein x is the area of the display region) or less. In the case where the panel section has the so-called counter source structure and a plurality of column electrodes, the maximum voltage difference of a reference signal supplied to the column electrodes is defined to be ax−b (wherein a=0.3565×y−0.6829, b=−0.0937y+0.7091, and y is a ratio of the area of all the column electrodes to the area of the display region) or less.

Abstract: A manual or handy type copying apparatus including an image reading section for reading an image of an original document to be copied, and a printing section for printing the image read by the image reading section onto a transfer material, and arranged to subject the printing section to manual scanning during the printing operation or work, with the printing portion held in contact with the transfer material, and characterized in that there are provided spring members adapted to support the printing portion in a floating state so that the printing portion contacts the transfer material under a constant pressure during the printing operation.