Abstract: A semiconductor device includes a first transistor, a first drive circuit including a second transistor, and a second drive circuit including a third transistor. The second transistor and the third transistor are connected in series; and a connection node of the second and third transistors is connected to a gate electrode of the first transistor. The first transistor, the second transistor, and the third transistor are normally-off MOS HEMTs formed in a first substrate that includes GaN. The first drive circuit charges a parasitic capacitance of the first transistor. The second drive circuit discharges the parasitic capacitance of the first transistor.

Abstract: An information reader includes a reader main unit and a case. The case houses therein an inner pad serving as an electrostatic capacity type of switch used by an operator to enable an information reading unit to read information. The inner pad is assembled within the case to be directed toward a touch detection region of the case. A switch unit, which is separated from the reader main unit, is provided with a touch electrode pad to which electrical charge is applied in response to an operator's touch operation, a wiring line one of whose both ends is electrically connected to the touch electrode pad, and a transmission pad to which the other end is electrically connected. The transmission pad is assembled with the case on the outer surface thereof.

Abstract: An information reader includes a reader main unit and a case. The case houses therein an inner pad serving as an electrostatic capacity type of switch used by an operator to enable an information reading unit to read information. The inner pad is assembled within the case to be directed toward a touch detection region of the case. A switch unit, which is separated from the reader main unit, is provided with a touch electrode pad to which electrical charge is applied in response to an operator's touch operation, a wiring line one of whose both ends is electrically connected to the touch electrode pad, and a transmission pad to which the other end is electrically connected. The transmission pad is assembled with the case on the outer surface thereof.

Abstract: An image printer system that prints out images using image data taken by a digital camera and recorded in a recording medium and that saves the image data in the recording medium in another recording medium. In this system, parameters are set for the printing operation and for the saving operation before they are begun, and the two operations are performed simultaneously or in one sequence. The image data may be corrected for the printing, but the image data that is saved is the original image data.

Abstract: An image printing system includes a mounting mechanism that mounts a medium on which image data is recorded, an instructing unit by which the user places an order for printing with regard to the images recorded on the medium, a printer that prints the images recorded on the medium, and a controller that inputs the image data recorded on the medium, causes the printer to perform printing in response to the order via the instructing unit, and receives the printing fee, wherein the medium comprises a medium having a prepay function, and the controller updates the prepaid balance in the prepayment information of the medium after the printing instruction is issued from the instructing unit.

Abstract: An image processor reduces the load on a user when selecting a frame image from among a group of frame images comprising a dynamic image by executing a specific process for printing and editing. The image processor includes a display controller for displaying a still frame image of a dynamic image with a stop time, and a group of temporally consecutive frame images with the still frame image as the center frame image.

Abstract: An image reading apparatus reads every picture element of an original image, converts the as-obtained analog signals of the respective picture elements into image data which are multilevel digital signals, image-processes the converted image data, and outputs binary image data corresponding to the respective picture elements. The original image is divided into a plurality of picture element blocks which are repeated every one or plural basic units with a basic unit of one or plural picture elements being continuous in a main scanning direction. The image data of the divisional picture element blocks are subjected to image processing such as trimming, masking, simple binarization processing and pseudo half tone processing in a parallel manner. Thereafter the image data of the picture element blocks are combined with each other so that image data corresponding to the original image are outputted.

Abstract: This invention concerns an image processing device for adjusting the density of an image and an image reading device incorporating the image processing device and aims to enhance the repeatability of pseudo-gradient without reference to density distribution of the image. The image processing device which fulfills the purpose of compensating the gradient of image data consisting of multivalue digital signals comprises means ME1 to ME3 for storing a plurality of gradient compensation data T1 to T3 having mutually different contents of compensation, means for detecting a contrast of an image on the basis of a group of image data conforming to one image, and means for switching the contents of compensation for the image data by selecting one of the three gradient compensation data T1 to T3 in conformity with the contrast.

Abstract: An image forming apparatus provided with an image forming part capable of reproducing on a recording medium an image information frame recorded on a microfilm. The apparatus effects a decision as to whether or not image information is present within the range of a prescribed width inwardly of the edge of the image information frame. When the presence of the image information in the range mentioned above is discerned, the part of the projected light reaching the image forming part which falls outside the edge is intercepted and the image information within the image information frame is completely reproduced on the recording medium. When the absence of the image information in the aforementioned range is confirmed, the part of the projected light which falls outside the edge and within the range of the prescribed width inwardly of the edge is intercepted so that the background part of the negative film is not reproduced on the recording medium.

Abstract: A microreader-printer having an automatic focusing function. According to this reader-printer, an autofocusing operation is discontinued in response to a frame search command, removal of a projecting lens from an optical path and removal of a microfilm carrier from an operative position. On the contrary, a print command being generated during the autofocusing operation in congress is suspended until the completion of the autofocusing operation.

Abstract: A microfilm image reader apparatus for detecting an image on a microfilm strip and projecting the detected image onto a target plane, wherein a beam of light bearing an image detected from the microfilm strip is produced by illuminating the microfilm strip and is projected through a projection lens onto the target plane, and wherein an automatic mode of focus control is established through detection of a condition in which the image-bearing beam is focussed with respect to the target plane and, when it is detected that the automatic mode of focus control is inoperable, the projection lens is automatically moved to a position having its focal plane located on a predetermined plane with respect to the target plane and, after the projection lens is moved to such a position, the focal plane of the projection lens may be manually adjusted by the operator of the apparatus.

Abstract: An optical apparatus wherein an image is to be focused onto a generally rectangular projection surface through a projection lens and wherein a focal state at a particular location of the projection surface is to be detected to move the projection lens on the basis of the result of detection of the focal state, a method of automatically controlling the focal point of the projection lens, characterized in that, when it is found that the focal state of the particular location of the projection surface can not be detected, a focal state at another location of the projection surface is detected to move the projection lens with respect to the projection surface on the basis of the result of the detection at the other location.

Abstract: A magnified image projector apparatus such as a microfilm strip reader or a microfilm strip printer apparatus having an automatic focus control system and a tiltable reflector mirror by means of which the image-carrying beam passed through an image projection lens may be directed to advance along one path of light toward the viewing screen to along another path of light to a photodetector unit of the focus control system which comprises a focusing lens located in the path of light between the tiltable reflector mirror and the photodetector unit so that the image-carrying beam passed through the projection lens may be incident on the photodetector unit to a reduced scale. This arrangement of the focussing lens allows significant reduction in the effective light receiving area of the photodetector unit used in the apparatus while enabling the photodetector unit to accurately detect the location at which the beam is focussed by the projection lens.