Abstract: Image feature values Va and Vb are derived from image data, coefficients C and D are determined based on the image feature values Va and Vb, and an approximate expression expressed with the file size Sfj of the JPEG compression file and the quantization data coefficient value Aqt is derived. Next, by designating the file size of a desired predetermined JPEG compression file based on the approximate expression, the quantization data coefficient value Aqt is derived, and a first quantization table as a reference is multiplied by the quantization data coefficient value Aqt, whereby a second quantization table is obtained. Then, using the second quantization table, the image data is actually JPEG-compressed.

Abstract: Disclosed are an apparatus, optical scanning device, and a corresponding method of forming images on a photosensitive surface. The apparatus includes a laser raster output scanner (ROS) including laser emitters arranged to simultaneously scan a plurality of laser beams across a single scan line of the photosensitive surface in response to received image data corresponding to pixels in an image to be reproduced, and a controller individually controlling each of the laser emitters to selectively apply one of a plurality of power levels to each of the laser beams based on the image data for each of the pixels, wherein a total power applied by the laser beams for each pixel is determined by a sum of the power levels applied by each of the laser beams.

Abstract: A data transfer method is used to transfer data via a physical transfer system among a plurality of independently provided transmitter/receiver apparatuses. In the data transfer method, when data is transferred, a database of a transfer-scheduled transmitter/receiver is added to the data, and then the database-added data is transferred.

Abstract: A data transfer method is used to transfer data via a physical transfer system among a plurality of independently provided transmitter/receiver apparatuses. In the data transfer method, when data is transferred, a database of a transfer-scheduled transmitter/receiver is added to the data, and then the database-added data is transferred.

Abstract: A data transfer method used in such a case that data is transferred via a physical transfer system among a plurality of independently provided transmitter/receiver apparatuses. In the data transfer method, when data is transferred, a database of a transfer-scheduled transmitter/receiver is added to the data, and then the database-added data is transferred.

Abstract: A data transfer method used in such a case that data is transferred via a physical transfer system among a plurality of independently provided transmitter/receiver apparatuses. In the data transfer method, when data is transferred, a database of a transfer-scheduled transmitter/receiver is added to the data, and then the database-added data is transferred.

Abstract: There is provided an ophthalmologic apparatus which is easily operated. In the ophthalmologic apparatus, during measurement using an eye examination portion for measuring an optical characteristic of an eye to be examined, the eye examination portion is moved relative to the eye to be examined in up/down and left/right directions by manual input. Then, the eye examination portion is moved relative to the eye to be examined in a forward/backward direction by automatic control.

Abstract: Image feature values Va and Vh are derived from image data, coefficients C and D are determined based on the image feature values Va and Vb, and an approximate expression expressed with the file size Sfj of the JPEG compression file and the quantization data coefficient value Aqt is derived. Next, by designating the file size of a desired predetermined JPEG compression file based on the approximate expression, the quantization data coefficient value Aqt is derived, and a first quantization table as a reference is multiplied by the quantization data coefficient value Aqt, whereby a second quantization table is obtained. Then, using the second quantization table, the image data is actually JPEG-compressed.

Abstract: An image equipment (40) includes an LSI (208) to control itself, and an interface (31) to connect with a ubiquitous image module unit (42) including a ubiquitous image module (12). The ubiquitous image module (12) included in the ubiquitous image module unit (42) connected to the image equipment (40) controls the LSI (208) included in the image equipment (40), so that it becomes possible to realize a new function which the image equipment (40) itself has not had. By this, it becomes unnecessary to develop a new LSI for expanding a function.

Abstract: There is provided an ophthalmologic apparatus which is easily operated. In the ophthalmologic apparatus, during measurement using an eye examination portion for measuring an optical characteristic of an eye to be examined, the eye examination portion is moved relative to the eye to be examined in up/down and left/right directions by manual input. Then, the eye examination portion is moved relative to the eye to be examined in a forward/backward direction by automatic control.

Abstract: A display device 70 having an organic luminescent element arranged at an object image-forming position of a finder optical system. Frames are formed by parts 31b, 32b, 33b of the negative electrode formed of non-transparent material, an organic electroluminescent material is laminated thereon on the eyepiece side, and a positive electrode formed of transparent material is superimposed thereon on the eyepiece side. Since the non-transparent negative electrodes 31b, 32b, 33b shield the light, the frames are recognized as black frames. When the periphery is dark, a voltage is applied between the electrodes causing the organic electroluminescent material to luminesce, such that the frame itself becomes brighter in display and is readily visible.

Abstract: At minimum, a member near an image plane that is observed through an eyepiece is made of antistatic resin obtained by giving the resin itself ion conductivity so that its antistatic effect can be of long duration.

Abstract: A camera is provided with a photographing device for setting various photographing conditions which determine a state of a subject image to be obtained as a picture, the photography device including an exposure device having a Plurality of selectively settable exposure modes for automatically setting at least one exposure value based on brightness of a subject, a mode selector for selecting one of the plurality of exposure modes, a calculation unit for calculating an amount indicative of the state of the subject image in accordance with the photographing conditions set by the photography device, an estimation unit for estimating visual effects which the subject image provides based on the calculated state amount, and a display device for displaying the visual effect corresponding to the exposure mode selected by the mode selection means in accordance with the estimated visual effects.

Abstract: A single-lens reflex camera comprises a taking lens having a zooming optical system, a finder whose angle of view is determined according to a focal length of the taking lens, and an operation member which is manually operated. In the single-lens reflex camera, the focal length of the taking lens is changed by driving the zooming optical system, and the zooming operation is controlled in response to an operation of the operation member so that the focal length of the taking lens is changed in the wide-angle direction by a predetermined amount. An angle of view corresponding to that which is seen before the focal length is changed is displayed within the finder.

Abstract: A single-lens reflex camera comprises a taking lens having a zooming optical system, a finder whose angle of view is determined according to a focal length of the taking lens, and an operation member which is manually operated. In the single-lens reflex camera, the focal length of the taking lens is changed by driving the zooming optical system, and the zooming operation is controlled in response to an operation of the operation member so that the focal length of the taking lens is changed in the wide-angle direction by a predetermined amount. An angle of view corresponding to that which is seen before the focal length is changed is displayed within the finder.

Abstract: A camera includes a manually operable member having a plurality of distance measuring areas and for switching between exposure correction and AF area and between single photographing and continuous photographing. A viewfinder of the camera displays not only an object but also the above-described respective functions displayed on a LCD and switchable by the manually operable member. As a result, a photographer is allowed to perform photographing while looking at not only the object but also the state of the various functions displayed on the LCD in the finder.

Abstract: An ophthalmologic apparatus having a slidable bed slidable horizontally and vertically to observe, measure, and photograph an eye to be examined. The ophthalmologic apparatus has a base, a slidable bed slidable on the base, a joy stick for permitting a user to control sliding of the slidable bed, a monitor for effecting image display, and a control unit for controlling a displayed image on the monitor in response to the operation of the joy stick.

Abstract: A single-lens reflex camera comprises a taking lens having a zooming optical system, a finder whose angle of view is determined according to a focal length of the taking lens, and an operation member which is manually operated. In the single-lens reflex camera, the focal length of the taking lens is changed by driving the zooming optical system, and the zooming operation is controlled in response to an operation of the operation member so that the focal length of the taking lens is changed in the wide-angle direction by a predetermined amount. An angle of view corresponding to that which is seen before the focal length is changed is displayed within the finder.

Abstract: A camera has an electronic viewfinder for displaying an image of a subject to be photographed in accordance with image data from a scene. The displayed image encompasses an area larger than that of the scene to be photographed, to enable the camera user to view objects and events outside of the photographic frame. In addition, the image data can be processed in accordance with differing photographic conditions, such as changes in shutter speed, aperture or electronic flash emission, to permit the user to view the changes that occur under the differing conditions.

Abstract: A single-lens reflex camera comprises a taking lens having a zooming optical system, a finder whose angle of view is determined according to a focal length of the taking lens, and an operation member which is manually operated. In the single-lens reflex camera, the focal length of the taking lens is changed by driving the zooming optical system, and the zooming operation is controlled in response to an operation of the operation member so that the focal length of the taking lens is changed in the wide-angle direction by a predetermined amount. An angle of view corresponding to that which is seen before the focal length is changed is displayed within the finder.