Abstract: An image projection apparatus as a first image projection apparatus configured to project an image includes a first input unit into which first image data is input, a second input unit into which second image data is input, and a generating unit configured to generate projection image data that includes a first image area corresponding to the first image data and a second image area corresponding to the second image data. The second image data is at least part of image data input to a second image projection apparatus different from the first image projection apparatus.

Abstract: The liquid crystal drive apparatus drives a liquid crystal element. The apparatus includes an image data producer producing, using each of multiple input frame image data continuously input thereto, first frame image data and second frame image data, and a driver sequentially controlling, depending on the first frame image data and the second frame image data, application of a first voltage or a second voltage lower than the first voltage to each of multiple pixels of the liquid crystal element in respective multiple sub-frame periods included in one frame period to cause that pixel to form a tone. Pixel data at pixel positions corresponding to each other in the first and second frame image data have mutually different tones. A tone difference between the mutually different tones is 20% or less of a higher one of the mutually different tones.

Abstract: The liquid crystal drive apparatus drives a liquid crystal element. The apparatus includes an image data producer producing, using each of multiple input frame image data continuously input thereto, first frame image data and second frame image data, and a driver sequentially controlling, depending on the first frame image data and the second frame image data, application of a first voltage or a second voltage lower than the first voltage to each of multiple pixels of the liquid crystal element in respective multiple sub-frame periods included in one frame period to cause that pixel to form a tone. Pixel data at pixel positions corresponding to each other in the first and second frame image data have mutually different tones. A tone difference between the mutually different tones is 20% or less of a higher one of the mutually different tones.

Abstract: A driving apparatus includes a contrast controller configured to repeat a bright display and a dark display having a display tone lower than the bright display every one frame in the plurality of pixels. In a driving mode in which the contrast controller repeats the bright display and the dark display, the common voltage controller provides different values to the common voltage in applying the voltage to the same pixel electrode between a first bright display frame that provides the bright display just before a frame for the dark display and a second bright display frame that provides the bright display just after the frame for the dark display.

Abstract: The electrooptical display apparatus includes pixels, and scan lines and data lines arranged in a matrix. The apparatus further includes pixel switching elements each enabling, in response to application of a selection voltage to one scan line, application of a pixel voltage to one pixel in a pixel row corresponding to the one scan line through one data line, a voltage producing part producing a sampling voltage that is to be supplied to the data lines and that monotonously changes while the selection voltage is applied to the scan line, a voltage sampling part sampling the pixel voltage from the sampling voltage, a sampling number detecting part detecting number of pixels for which a same voltage is sampled, and a controller lowering a frequency of sampling of the pixel voltage when the detected number is a predetermined number.

Abstract: When images are projected in a superposing manner on a screen by a plurality of projectors, a controller of a projector obtains drive timing information of liquid crystal panels of the plurality of projectors and controls a drive timing of a drive unit on the basis of the obtained drive timing information so as to reduce a flicker of a display image.

Abstract: Object recognition is executed by using, of feature data classified into a plurality of groups, only feature data belonging to a selected group. Hence, it is unnecessary to compare and refer to all feature data so that object recognition processing can be speeded up.

Abstract: A display control apparatus to drive a display panel to display an image and a control method of the display device. It is determined whether or not a number of different bits in a plurality of bits of display image signals that are to be continuously converted into analog signals are different from each other is equal to or more than a predetermined value. If it is determined that the number of different bits is equal to or more than the predetermined value, then the display image signal is modified so that the display panel is driven based on an analog signal converted from the modified display signal to display an image.

Abstract: Object recognition is executed by using, of feature data classified into a plurality of groups, only feature data belonging to a selected group. Hence, it is unnecessary to compare and refer to all feature data so that object recognition processing can be speeded up.

Abstract: This invention makes it possible to execute photography with a sufficient red-eye relaxation effect. To do this, in this invention, the amount of a red eye is detected on the basis of a signal obtained by reading an object image under light projection by a light projection unit. The light projection by the light projection unit is controlled on the basis of the detection result.

Abstract: A display control apparatus to drive a display panel to display an image and a control method of the display device. It is determined whether or not a number of different bits in a plurality of bits of display image signals that are to be continuously converted into analog signals are different from each other is equal to or more than a predetermined value. If it is determined that the number of different bits is equal to or more than the predetermined value, then the display image signal is modified so that the display panel is driven based on an analog signal converted from the modified display signal to display an image.

Abstract: When images are projected in a superposing manner on a screen by a plurality of projectors, a controller of a projector obtains drive timing information of liquid crystal panels of the plurality of projectors and controls a drive timing of a drive unit on the basis of the obtained drive timing information so as to reduce a flicker of a display image.

Abstract: The present invention provides a flash discharging circuit for simplifying the charging of electric power in a capacitor. When energy discharged from a transformer for storing and discharging energy is charged in a main capacitor of the circuit, a detection voltage inputted to a first input terminal of a comparator so as to detect a primary current flowing through a primary winding of the transformer is compared with a reference voltage inputted to a second input terminal of the comparator. According to a result of the comparison, it is detected that a predetermined primary current flows through the primary winding of the transformer. When the primary current flowing through the primary winding of the transformer is turned off, the reference voltage is set to be lower than the detection voltage.

Abstract: The present invention provides a flash discharging circuit for simplifying the charging of electric power in a capacitor. When energy discharged from a transformer for storing and discharging energy is charged in a main capacitor of the circuit, a detection voltage inputted to a first input terminal of a comparator so as to detect a primary current flowing through a primary winding of the transformer is compared with a reference voltage inputted to a second input terminal of the comparator. According to a result of the comparison, it is detected that a predetermined primary current flows through the primary winding of the transformer. When the primary current flowing through the primary winding of the transformer is turned off, the reference voltage is set to be lower than the detection voltage.

Abstract: This invention makes it possible to execute photography with a sufficient red-eye relaxation effect. To do this, in this invention, the amount of a red eye is detected on the basis of a signal obtained by reading an object image under light projection by a light projection unit. The light projection by the light projection unit is controlled on the basis of the detection result.

Abstract: The present invention provides a flash discharging circuit for simplifying the charging of electric power in a capacitor. When energy discharged from a transformer for storing and discharging energy is charged in a main capacitor of the circuit, a detection voltage inputted to a first input terminal of a comparator so as to detect a primary current flowing through a primary winding of the transformer is compared with a reference voltage inputted to a second input terminal of the comparator. According to a result of the comparison, it is detected that a predetermined primary current flows through the primary winding of the transformer. When the primary current flowing through the primary winding of the transformer is turned off, the reference voltage is set to be lower than the detection voltage.

Abstract: This invention makes it possible to execute photography with a sufficient red-eye relaxation effect. To do this, in this invention, the amount of a red eye is detected on the basis of a signal obtained by reading an object image under light projection by a light projection unit. The light projection by the light projection unit is controlled on the basis of the detection result.

Abstract: Object recognition is executed by using, of feature data classified into a plurality of groups, only feature data belonging to a selected group. Hence, it is unnecessary to compare and refer to all feature data so that object recognition processing can be speeded up.

Abstract: The present invention provides a flash discharging circuit for simplifying the charging of electric power in a capacitor. When energy discharged from a transformer for storing and discharging energy is charged in a main capacitor of the circuit, a detection voltage inputted to a first input terminal of a comparator so as to detect a primary current flowing through a primary winding of the transformer is compared with a reference voltage inputted to a second input terminal of the comparator. According to a result of the comparison, it is detected that a predetermined primary current flows through the primary winding of the transformer. When the primary current flowing through the primary winding of the transformer is turned off, the reference voltage is set to be lower than the detection voltage.

Abstract: A strobe device including a light-emitting tube, a main capacitor which accumulates energy and which supplies the energy to the light-emitting tube, a transformer circuit which includes primary and secondary coils in order to accumulate the energy of a power supply in the main capacitor, wherein the primary coil is connected to the power supply and the secondary coil is connected to the main capacitor, a control circuit which controls a current flowing from the power supply to the primary coil, wherein a current starts to flow through the secondary coil after the control circuit stops a current flowing through the primary coil, and a determination circuit which determines that a malfunction has occurred in accordance with a current flowing through the secondary coil.