Abstract: Improved is luminance of an image display apparatus in which a display panel is configured by a matrix wired plurality of electron emitting devices, and long life thereof is tried to be realized. In one select period, a scanning signal is applied to a plurality of scan interconnection. In a subsequent select period, a scanning signal is applied to a plurality of scan interconnections which were shifted with one scan interconnection portion. Between scanning signals, a low level portion is disposed. Also, pulse width modulation is carried out.

Abstract: In a power saving mode that suffers less deterioration of image quality, power savings are achieved by changing If data, changing PWM clocks, changing ABL setups, drive voltage control, or the like. In a power saving mode that suffers some deterioration of image quality, power saving control is implemented by multiplying luminance control data, bit-shifting an image, reducing the screen size, or the like.

Abstract: This invention suppresses power consumption in an image forming apparatus using an electron-emitting device. For this purpose, an image forming apparatus has a plurality of electron-emitting devices, a light-emitting substance for emitting light by irradiation of electrons emitted by the electron-emitting devices, a first potential application means for sequentially selecting the plurality of electron-emitting devices and applying, to a selected electron-emitting device, a predetermined potential different from a potential applied to an unselected electron-emitting device, and a second potential application means for applying a potential corresponding to an image signal to at least a selected electron-emitting device.

Abstract: An image display apparatus performs color adjustment such that the emission luminances of emission substances of respective colors that emit light upon reception of electrons emitted by electron-emitting devices are controlled by controlling the electron amount emitted by the electron-emitting devices. A pulse width-modulated signal corresponding to an image signal is input to the column wiring of a display panel having an electron source with a plurality of electron-emitting devices and fluorescent substances laid out in stripes in correspondence with the respective colors. A horizontal scanning signal for driving a row wiring is input to the row wiring in synchronism with image display. The pulse width-modulated signal is driven by voltages from different power sources in units of the respective colors.

Abstract: The present invention relates to an image display apparatus for forming an image with a plurality of luminescent spots to be precisely aligned in a matrix. For example, a spacer disposed between an electron source and a face plate causes luminescent spots on the face plate spaced unevenly. The luminescent spots spaced unevenly will produce a visual unevenness in luminance which deteriorates the quality of produced image. By modifying the quantity of light of luminescent spots spaced unevenly, the visual unevenness in luminance is compensated.

Abstract: When a signal applied to the column wiring of a display panel falls, two transistors are simultaneously turned on to cause the signal to fall steeply. Then, only one transistor is turned off to cause the pulse signal to fall moderately. This diminish the influence of crosstalk between adjacent column wirings.

Abstract: For decreasing hardware for correction to compensate for decrease of luminance due to decrease in drive voltage of devices, a plurality of electron-emitting devices are arranged in a matrix pattern and wired by a plurality of row and column lines, a column wiring driving unit applies voltage pulses to the column lines, and row wiring driving units apply voltages to the row lines to switch a row to be selected. The image signal processing unit divides a luminance level of an image signal into plural areas in the signal amplitude direction in response to each split timing signal. There are provided means for detecting frequencies of luminance signals included in the respective amplitude areas, a correction quantity calculating unit for outputting correction signals based on the detected values, and an adding unit for adding the correction signals and luminance signals, which outputs results of addition as electron emission requirements to the column wiring driving unit.

Abstract: A memory capable of memorizing a video signal has part of its address area into which an information signal is inhibited from being written. A writing address controller for cyclically specifying writing addresses of the memory cyclically specifies writing addresses in the remaining address area except for the part of address area to allow a plurality of different moving picture scenes to be memorized in the one and same memory.For according to a large capacity main memory, a sub-memory is interposed to access to the main memory with a predetermined information amount being as the unit, thereby facilitating address management of the main memory as well as improving a utilizing effeciency of the main memory.

Abstract: A television camera device having an image pickup structure, with a plurality of control units, for producing an optimum image output signal that (i) corresponds to a received object image (ii) is in accordance with one of a plurality of predetermined image pickup environments. The device includes a memory for storing scene files which contain image pickup control data for the plurality of the predetermined image pickup environments, and a mode setting structure for selecting a particular scene file from the scene files stored in the memory. Further, the device includes a timer operatable in response to the selection of a scene file by the mode setting structure, and an operation structure, coupled to the image pickup structure, the memory, the mode setting structure, and the timer.