Abstract: According to the invention, by forming at least every two frames having video contents corresponding to each frame of a video signal, for example, a frame rate of movie contents whose frame rate is equal to 24 Hz is converted into 48 Hz. A plurality of subfields (SFs) corresponding to each frame of the conversion signal are divided into first and second division SF groups. Each division SF group is further classified into an upper SF group on the large weight side and a lower SF group on the small weight side. The weights of the upper SF groups are made symmetrical between the first and second division SF groups. The weight of each SF belonging to the lower SF group in the first division SF is set to be larger than that in the second division SF.

Abstract: An image display apparatus, which converts a video signal in a first video signal format into a video signal in a second video signal format causing an increase in dynamic range, and displays the video signal in the second video format, includes a video signal conversion circuit configured to receive the video signal in the first video signal format and to produce the video signal in the second video signal format, a drive circuit configured to drive an image display panel according to the video signal in the second video signal format, and a signal processing module including signal processing circuits configured to perform signal processing necessary to drive the drive circuit, wherein the video signal conversion circuit is situated inside the signal processing module.

Abstract: A display has a panel, and first and second electrodes. The first and second electrodes define a matrix of cells on the panel. The second electrodes, which correspond to lines of the cells, are scanned to select the cell lines one by one. The first electrodes are driven to set display data for a selected one of the cell lines. The display also has a sequence setting unit for setting sequences of scanning the second electrodes, and a sequence selection unit for selecting one of the sequences that minimizes the current and power consumption of a first-electrode driver without deteriorating the quality of the displayed images.

Abstract: Power consumption control is performed that does not induce unnatural changes in brightness even when data causing an abrupt change in load ratio is input, and that can make the power consumption settle down to the desired value. The load ratio is calculated from data input to a display apparatus, and the load ratio is again calculated this time backward from the present brightness value; if the difference between the two calculated values is greater than a threshold value, a new brightness value is calculated from the load ratio, and the brightness is set to the newly calculated value. Thereafter, the brightness is controlled based on measured power consumption values.

Abstract: A display has a panel, and first and second electrodes. The first and second electrodes define a matrix of cells on the panel. The second electrodes, which correspond to lines of the cells, are scanned to select the cell lines one by one. The first electrodes are driven to set display data for a selected one of the cell lines. The display also has a sequence setting unit for setting sequences of scanning the second electrodes, and a sequence selection unit for selecting one of the sequences that minimizes the current and power consumption of a first-electrode driver without deteriorating the quality of the displayed images.

Abstract: The present invention relates to a plasma display device which limits a generation of electromagnetic wave. The plasma display device has first and second drive circuits for applying a drive voltage to first and second display electrode pair. Further, a direction of a charge current flowing at said first display electrode pair when said drive voltage is applied by said first drive circuit is opposite on said plasma display panel to a direction of a charge current flowing at said second display electrode pair when said drive voltage is applied by said second drive circuit. According to the present invention, a transitional charge/discharge current, which is generated upon the application of a drive voltage to one of the display electrodes, and a light emission discharge current flow in opposite directions on the panel. Thus, electromagnetic waves that are generated by the inductances of the display electrode pair cancel each other out.

Abstract: A method for producing an air-tight, heat-resistant plate for a particular use in manufacturing bulbous fluorescent lamp, which comprises: preparing a shaping material by mixing an inorganic filler composed of alumina powder and silica powder in a specified compositional ratio, and glass powder having a thermal expansion coefficient of 8.5 to 11.5.times.10.sup.-6 /.degree.C., both inorganic filler and glass material being blended at a predetermined ratio then, forming the shaping material into a shaped product of any desired configuration by a known shaping method; thereafter heating this shaped body to a temperature, at which the glass powder used becomes molten and fused, thereby rendering it to be a burned body.