Abstract: A work fixing device capable of stably fixing the work, without any biasing, in the longitudinal direction of the work, of the fastening force for fixing the work. The moving mechanism of clamps is constructed by comprising a scroll disc as working disc forming a circular hole in which to insert the work at the center and scroll guides in spiral shape the winding direction of which is opposite to each other from the center toward the outer circumference on the both side faces, a rotary drive mechanism for rotatably driving this scroll disc, and scroll pieces having a fitting portion to be engaged with the scroll guides of the scroll disc and disposed on both sides of the scroll disc in a way to correspond to a plurality of clamps respectively.

Abstract: An acceleration sensor, which has realized such a high impact-resistance that a weight bottom surface of an acceleration sensor element does not directly collide with an inner bottom plate of a protection case made of ceramic, glass or silicon to avoid edges and corners of the weight bottom surface of the acceleration sensor element chipping, even when an excessive acceleration or impact is applied to the acceleration sensor. The acceleration sensor comprises the acceleration sensor element having in a center a weight that works as a pendulum when acceleration is applied, and the protection case housing the acceleration sensor element. The inner bottom plate of the protection case works as a regulation plate to prevent the weight from excessively swing downwards. An impact buffer material of a metal layer or a resin layer is provided on the weight bottom surface or the inner bottom plate of the protection case.

Abstract: It is possible to better correct dynamic false contours in gradation display made by dividing each field into plural subfields. A motion vector detection section detects a motion vector extending between pixels mutually corresponding between two mutually neighboring fields. A pixel position changing section calculates a pixel position vector indicating from where to acquire data for use in rearranging emission data by multiplying a motion vector ending at a pixel to be rearranged by a predetermined function. Furthermore, when a brightness difference between the pixel from which data is to be acquired and the pixel to be rearranged is larger than a threshold value, the pixel position changing section corrects the calculated pixel position vector to change the pixel indicated thereby to one closer to the pixel to be rearranged until the brightness difference is equal to or smaller than the threshold value.

Abstract: Provided is a semiconductor sensor device which is manufactured by an MEMS technology wherein machining technology and/or material technology is combined with semiconductor technology for detecting and measuring various physical quantities. In the semiconductor sensor device, cracks which generate in a cap chip and a molding resin are eliminated and air-tightness between a semiconductor sensor chip and the cap chip is ensured. The cracks due to vibration applied when being cut can be eliminated by having the circumference side surface of the cap chip as a wet-etched surface. Furthermore, insulation is ensured by coating the cap chip side surface with an insulating protection film.

Abstract: A multi-grayscale display device to appropriately control brightness of a display (screen) and power according to the content of a picture while preventing deterioration of image quality of a picture, so that both of these performances are improved. In a multi-grayscale processing unit of the display device (PDP device), in a subfield (SF) driving control, the number of pixels of low grayscales in an image of an input picture signal is detected and determined by an image number detection unit, and accordingly, a selection signal to switch one from outputs of a plural types of SF conversions of an SF conversion unit is determined and outputted by a switching unit. In the control, an SF conversion in which the number of rest SF becomes large as the number of pixels of low grayscales becomes small selected.

Abstract: A technology capable of reducing false contours and others in accordance with inclinations of various gradations and capable of improving image quality when moving images are displayed in a multiple tone display system is provided. In this display system, in addition to a movement amount (MV) and a digit change signal (RK) and the like, an edge amount (GR) which expresses a size of inclination of gradation is detected in a multiple tone processing unit. Then, in accordance with them, an appropriate process is selected and executed in a false contour processing unit from plural kinds of processes for reducing the false contours in moving images including a multiple tone process.

Abstract: An image display apparatus includes a displayed-subfield selecting circuit configured to select a lit-up pattern table from a plurality of lit-up pattern tables in response to an input image signal, a gain-characteristic generating circuit configured to select, from a plurality of gain characteristics, a gain characteristic corresponding to the selected lit-up pattern table, and a gain control circuit configured to produce a gain-limited image signal made by limiting a maximum level of the input image signal in response to the selected gain characteristic, wherein the on/off state of subfields is controlled in response to a level of the gain-limited image signal in accordance with the selected lit-up pattern table, thereby displaying a multi-level image on a display panel.

Abstract: In a displacement detection device having an IC chip for a regulation plate, silicon broken pieces might drop from loose chippings during assembling or using the device and affect properties of the displacement detection device. By setting an angle of grinding traces on an IC chip wafer of chip with a vertical line on side ridges of the IC chip to less than 45 degrees, more preferably 10 to 45 degrees, the chippings including loose chippings can be reduced on the side ridges of the IC chip. Using of an IC chip having loose chippings on side ridges for a regulation plate can be avoided, and a highly reliable displacement detection device can be provided.

Abstract: An acceleration sensor, which has realized such a high impact-resistance that a weight bottom surface of an acceleration sensor element does not directly collide with an inner bottom plate of a protection case made of ceramic, glass or silicon to avoid edges and corners of the weight bottom surface of the acceleration sensor element chipping, even when an excessive acceleration or impact is applied to the acceleration sensor. The acceleration sensor comprises the acceleration sensor element having in a center a weight that works as a pendulum when acceleration is applied, and the protection case housing the acceleration sensor element. The inner bottom plate of the protection case works as a regulation plate to prevent the weight from excessively swing downwards. An impact buffer material of a metal layer or a resin layer is provided on the weight bottom surface or the inner bottom plate of the protection case.

Abstract: The present invention provides a work fixing device capable of stably fixing the work, without any biasing, in the longitudinal direction of the work, of the fastening force for fixing the work. The moving mechanism 3 of clamps 2 is constructed by comprising a scroll disc 4 as working disc forming a circular hole 41 in which to insert the work W at the center and scroll guides 42a, 42b in spiral shape the winding direction of which is opposite to each other from the center toward the outer circumference on the both side faces, a rotary drive mechanism 5 for rotatably driving this scroll disc 4, and scroll pieces 6 having a fitting portion 61 to be engaged with the scroll guides 42a, 42b of the scroll disc 4 and disposed on both sides of the scroll disc 4 in a way to correspond to a plurality of clamps 2 respectively.

Abstract: A floating type magnetic head is made of a polycrystalline material. A surface to be opposed to a magnetic recording medium is undulated with lands and grooves having a height difference of 50 to 200 .ANG. on an average and a repetition pitch of 5 to 20 microns on an average. The portions, in which the heights of the lands and the grooves abruptly change, extend along the boundaries of the polycrystals. The head surface opposed to the magnetic recording medium is sputter-etched to have the predetermined surface roughness.

Abstract: A floating type magnetic head is made of a polycrystalline material. A surface to be opposed to a magnetic recording medium is undulated with lands and grooves having a height different of 50 to 200 .ANG. on an average and a repetition pitch of 5 to 20 microns on an average. The portions, in which the heights of the lands and the grooves abruptly change, extend along the boundaries of the polycrystals. The head surface opposed to the magnetic recording medium is sputter-etched to have the predetermined surface roughness.