Abstract: A display device includes a display processing unit configured to display character input buttons, each of which is assigned a plurality of characters, and an order designation button for designating the order of a character capable of being input among the characters assigned to the character input button, an order designation unit configured to designate the order of the character capable of being input among the characters assigned to the character input button every time a button corresponding to the order designation button among buttons on an operation terminal is pressed, and an input character acquisition unit configured to acquire the character corresponding to the order designated by the order designation unit among the characters assigned to the character input button corresponding to the pressed button as an input character when the button corresponding to the character input button among the buttons on the operation terminal is pressed.

Abstract: An image projection device includes: a calculation processor which executes a video mute operation on the basis of a video mute manipulation signal for requesting the video mute operation, determines whether or not a screensaver of video output equipment has been activated on the basis of a first signal input from the video output equipment, determines the presence or absence of a second signal to be input from the video output equipment, and determines whether or not information indicating the activation of the screensaver of the video output equipment has been stored. The calculation processor determines to continue the video mute operation when the video mute operation has been requested, when it is determined that there is no second signal, and when it is determined that the information indicating the activation of the screensaver of the video output equipment has been stored.

Abstract: Transition to an electric power saving mode is performed without giving a user of a projector the false awareness that the projector is failing, a flicker phenomenon is suppressed and an image with a brightness in the electric power saving mode being is immediately projected, first to third electric powers electric power values which become smaller in this order are used as light source electric power, and a controller that, upon acceptance of an input for selecting the third electric power, causes the second electric power to be supplied to the light source and decreases an amplitude of the image signal, and after elapse of a fixed time, causes the third electric power to be supplied to the light source is included.

Abstract: Transition to an electric power saving mode is performed without giving a user of a projector the false awareness that the projector is failing, a flicker phenomenon is suppressed and an image with a brightness in the electric power saving mode being is immediately projected, first to third electric powers electric power values which become smaller in this order are used as light source electric power, and a controller that, upon acceptance of an input for selecting the third electric power, causes the second electric power to be supplied to the light source and decreases an amplitude of the image signal, and after elapse of a fixed time, causes the third electric power to be supplied to the light source is included.

Abstract: With the purpose of controlling a light source to appropriately reduce the brightness of reflected light at the time of starting projection according to the conditions under which a projector is being used, the projector includes a solid-state light source unit that emits light, a power supply unit that supplies driving electric power to the solid-state light source unit, an image display device that modulates the light emitted from the solid-state light source unit according to an image signal and that projects the modulated light onto a projection surface, and a detection unit that detects the intensity of the ambient light of the projection surface.

Abstract: With the purpose of controlling a light source to appropriately reduce the brightness of reflected light at the time of starting projection according to the conditions under which a projector is being used, the projector includes a solid-state light source unit that emits light, a power supply unit that supplies driving electric power to the solid-state light source unit, an image display device that modulates the light emitted from the solid-state light source unit according to an image signal and that projects the modulated light onto a projection surface, and a detection unit that detects the intensity of the ambient light of the projection surface. Upon receiving a lighting signal that indicates that the solid-state light source unit is to be lit, a control unit controls the power supply unit according to the intensity of the light detected by the detection unit to incrementally raise the driving electric power supplied from the power supply unit to the solid state light source unit.

Abstract: An electronic device capable of reducing a continuously generated whining sound is provided. Electronic device (1) includes: cooling target (2); cooling fan (3) that cools cooling target (2); temperature detector (4) that detects the temperature of cooling target (2); and controller (5) that determines a driving voltage to be supplied to cooling fan (3) on the basis of the temperature of cooling target (2) detected by temperature detector (4), supplies the driving voltage to cooling fan (3), and, when a waiting time for updating the driving voltage has elapsed after supplying the driving voltage, redetermines the driving voltage on the basis of the temperature of cooling target (2) detected by temperature detector (4) at that point in time and supplies the driving voltage to cooling fan.

Abstract: A projector having a focusing lens comprises a position detector for detecting the position of the focusing lens, an image forming element for modulating light based on a video signal to form an image, a data recording unit having stored therein a correlation table indicative of a relationship between the position of the focusing lens and the amplitude of the video signal applied to the image forming element, a processing unit for calculating the amplitude of the video signal that corresponds to the position of the focusing lens detected by the position detector with reference to the correlation table stored in the data recording unit, and an image control unit for adjusting the amplitude of the applied video signal to the amplitude calculated by the processing unit, and supplying the adjusted amplitude to the image forming element.

Abstract: A first area and a second are formed in an image projected by a projector. A standard image plate is placed in a surface on which an image for the first area is projected. A standard image has been drawn on a standard image plate and is displayed in correct colors when white light is projected on the standard image plate. The projector projects white light as the image for the first area. An image for the second area is projected on a projecting surface. A user operates an operating section so that the image in the second area is closer to the standard image. A color correcting section corrects the colors of the image in the second area on the basis of information inputted to the operating section.

Abstract: In a method of improving quality of color images displayed on or produced from a color image device, a user is made to select a color or an object area of an object of user's interest and color correction is conducted using the selected item as a central color of correction to thereby flexibly achieve color correction. The image color correcting device 1 conducts color correction for an input image 2 and supplying an output image to an image display section 3 and includes object selecting means 10 for selecting an object item or an object color as a color correction object from the output image of the image display section 3 and a color correction processing section 11 for calculating a central color of an object item or an object color thus selected and setting the central color as a central color of correction and correcting the central color to thereby correct the output image into a desired color.

Abstract: A first area and a second are formed in an image projected by a projector. A standard image plate is placed in a surface on which an image for the first area is projected. A standard image has been drawn on a standard image plate and is displayed in correct colors when white light is projected on the standard image plate. The projector projects white light as the image for the first area. An image for the second area is projected on a projecting surface. A user operates an operating section so that the image in the second area is closer to the standard image. A color correcting section corrects the colors of the image in the second area on the basis of information inputted to the operating section.