摘要:
When a video signal is inputted to a projector (10) through a video input terminal, a luminance peak value of an image of the video signal is detected by an image-analyzing circuit (61) to be outputted to a CPU (71). A gain-adjusting circuit (63) adjusts a luminance signal in the video signal based on a command from the CPU (71). The CPU (71) determines a gain adjustment amount based on the luminance peak value of the image obtained by the image-analyzing circuit (61) and outputs the result to the gain-adjusting circuit (63). For instance, when the luminance peak value (Ip) of the image is 50% of the upper limit (Imax) thereof, a gain-adjusting amount AG is doubled. In this case, an illuminating light volume of a light valve (44a) has to be reduced to 50%, which is achieved by light-attenuation by a light-source lamp (21) and an open/close light shield (23).
摘要:
When a video signal is inputted to a projector (10) through a video input terminal, a luminance peak value of an image of the video signal is detected by an image-analyzing circuit (61) to be outputted to a CPU (71). A gain-adjusting circuit (63) adjusts a luminance signal in the video signal based on a command from the CPU (71). The CPU (71) determines a gain adjustment amount based on the luminance peak value of the image obtained by the image-analyzing circuit (61) and outputs the result to the gain-adjusting circuit (63). For instance, when the luminance peak value (lp) of the image is 50% of the upper limit (Imax) thereof, a gain-adjusting amount AG is doubled In this case, an illuminating light volume of a light valve (44a) has to be reduced to 50%, which is achieved by light-attenuation by a light-source lamp (21) and an open/close light shield (23).
摘要:
An illumination device includes: a light source; a polarization converter (114) that converts a light beam irradiated by the light source into a substantially uniform linear polarized light, the polarization converter (114) being slanted relative to a central axis of the light beam irradiated by the light source and including a plurality of polarization-separating films (1141) and a plurality of light reflection films (1143) alternately arranged in a direction substantially orthogonal to the central axis of the light beam irradiated by the light source; an optical filter (311) provided between the light source and the polarization converter (114) and having a plurality of optical conversion layers, which are formed striped with the pitch thereof corresponding to the arrangement of the polarization-separating films (1141) to optically convert the incident light beam; a holder frame (312) that holds the optical filter (311); and a filter-driving mechanism (313) that moves the holder frame (312) in a direction in which the polarization-separating films (1141) are arranged.
摘要:
The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.
摘要:
The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.
摘要:
A casing for electronic device having a casing body for housing an electronic device and a foot part provided to be movable forward to and backward from a surface of the casing body and adapted to adjust inclination of the electronic device, the casing body has a boss that is formed to protrude on the inner surface of the casing body and in which a hole connecting the inside and outside of the casing body is formed, and the foot part has a grounding part exposed from the casing for an electronic device and abutted against an installation target surface and a shaft part housed within the boss and having a screw groove formed on its outer circumferential surface. A recess part is formed at a part of the screw groove of the shaft part, and on the inner surface of the boss, a screw thread that engages with the screw groove of the shaft part and extends in a circumferential direction of engagement without overlapping a circumference of the hole as viewed from the axial direction of movement of the foot part, and a protrusion that fits in the recess part when the shaft part turns by a predetermined quantity in relation to the inner surface of the boss, are formed.
摘要:
The CPU of a personal computer displays a list of one-click icons, each representing one or a plurality of printing functions, in the icon display area, and selects one one-click icon from the list of the one-click icons displayed in the icon display area, to automatically set a plurality of printing functions corresponding to the selected one-click icons.