Abstract: A recording-medium cartridge including a recording-medium and a cartridge memory. In this recording-medium cartridge, the cartridge memory holds a unique cryptographic key in the condition that the rewrite of the cryptographic key is forbidden, and is detachably attached to the recording-medium cartridge. The recording-medium holds a CRC-code, which is generated based on the cryptographic key and data to be recorded on the recording-medium, and data in the condition that the CRC-code is correlated with the data.

Abstract: A modulation clock supplied to a drive circuit (7) of a display panel (1) is frequency-modulated so as to spread its harmonics spectrum. The frequency deviation is so restricted that, if at least two pixels corresponding to two adjacent scanning wirings are displayed based on arbitrary same luminance data, a difference in display luminance in a specified period between one pixel and the other pixel is less than or equal to a tolerable value determined by the luminance data.

Abstract: The invention provides an image display apparatus and an image display method of excellent image quality, by correcting the voltage drop retsulting from the electrical resistance of the wirings with a simple configuration. There are provided adjustment data calculation means for calculating, for input image data, adjustmnent data for correcting the influence of the voltage drop resulting from the electrical resistance of the row wirings and gray scale number converting means for converting the number of gradation levels of the adjustmnent data. Modulation means outputs a signal modulated in the voltage amplitude to each column wiring, based on the adjustment data outputted by and subjected to the conversion of gradation levels by the gray scale number converting means.

Abstract: A recording and reproducing apparatus includes: a recording section for recording an information signal in a magnetic recording medium including a magnetic layer including hexagonal ferrite; a reproducing section for reproducing the information signal recorded in the magnetic recording medium, the reproducing section including: a reproducing head for reading the information signal from the magnetic recording medium; an equalizer for equalizing the information signal read from the magnetic recording medium, wherein a partial response of the information signal after equalization by the equalizer satisfies a condition that 0.4?a<3.0, ?0.6?b<2.0, ?2.0<c??0.2, ?3.0<d??0.4, and ?1.0<e?0.0. A corresponding reproducing method, a corresponding reproducing apparatus, and the magnetic recording medium are also disclosed.

Abstract: A recording and reproducing apparatus includes: a recording section for recording an information signal in a magnetic recording medium in which a magnetic layer containing hexagonal ferrite is formed; and a reproducing section for reproducing the information signal recorded in the magnetic recording medium, the reproducing section including: a reproducing head for reading the information signal from the magnetic recording medium; and an equalizer for equalizing the information signal read from the magnetic recording medium, wherein in the equalized information signal, coefficients a, b, c, d of PR(1, a, b, c, d) meet conditions that 0.1?a<2.0, ?0.9?b<?0.0, ?2.0<c??0.3, and ?1.0<d??0.1. A corresponding reproducing method, a corresponding reproducing apparatus, and the magnetic recording medium are also disclosed.

Abstract: This invention discloses an arrangement capable of controlling necessary display characteristics by a proper one of a controller and image display when display characteristics must be corrected upon an environmental change even if the image display and controller are located apart from each other in an image display control system having the controller for outputting a signal including at least a pair of video and acoustic signals, and at least one image display for receiving a signal from the controller and displaying a corresponding image. This invention adopts various sensors for detecting the environment of one of the controller and image display. In adjusting the display characteristics of the image display in accordance with the detection results of the sensors, the display characteristics of the image display are adjusted by either one of the controller and image display in accordance with an adjustment target.

Abstract: The invention provides an image display apparatus and an image display method of excellent image quality, by correcting the voltage drop resulting from the electrical resistance of the wirings with a simple configuration. There are provided adjustment data calculation means for calculating, for input image data, adjustment data for correcting the influence of the voltage drop resulting from the electrical resistance of the row wirings and gray scale number converting means for converting the number of gradation levels of the adjustment data. Modulation means outputs a signal modulated in the voltage amplitude to each column wiring, based on the adjustment data outputted by and subjected to the conversion of gradation levels by the gray scale number converting means.

Abstract: Provided is a magnetic recording medium capable of achieving high reproduction output in a short wavelength region. The magnetic recording medium comprises a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a ferromagnetic powder and a binder in this order on a nonmagnetic support. The magnetic layer has a squareness ranging from 0.6 to 1.0 in a perpendicular direction, and the magnetic recording medium is employed for recording a magnetic signal on the medium in a longitudinal direction at a linear recording density of equal to or greater than 300 Kbpi using a recording head with a gap length of equal to or less than 0.3 micrometer, and reproducing the magnetic signal using a magnetoresistive head with a shield spacing of equal to or less than 0.2 micrometer.

Abstract: Provided is a magnetic recording medium capable of achieving optimum error rate characteristics in the high-density region. The magnetic recording medium is employed for magnetically recording signals and reproducing the signals with a reproduction head with a track width equal to or less than 6 ?m. The magnetic recording medium comprises a magnetic layer on a nonmagnetic support, and the thickness variation of the magnetic layer satisfies the following equation (1): (1)m/Tw?10 [wherein m denotes magnetic layer thickness variation (%) and Tw denotes reproduction head track width (?m)].

Abstract: There is here provided an image display apparatus that adjusts a change of a drive condition resulting from an electrical resistance of a matrix wiring of a display panel scarcely using a hardware. The apparatus has an adjusted image data calculation unit that generates adjusted image data that is the image data to which adjustment is applied for relaxing an influence of a voltage drop caused by the electrical resistance of a row wiring for the input image data of one horizontal scan interval, wherein the adjusted image data calculation unit is provided with means for discretely forecasting and calculating a voltage drop amount in the space and time directions, to be generated on the row wiring during the one horizontal scan interval corresponding to input image data and means for calculating the adjusted image data in which adjustment is applied to the image data.

Abstract: A transparent electroconductive film characterized in comprising a laminate having a three-layered structure in which a transparent electroconductive layer is formed via a transparent gas barrier layer on one face of a transparent, fluorine-containing resin film.

Abstract: An electrophotographic photoreceptor is disclosed. The charge transport material comprising a mixture of stereoisomers as a charge transport material and glass transition point Tgb of the binder resin of the charge transport layer and glass transition point Tgl of the charge transport layer satisfy 100° C.<Tgl1<Tgb(both Tgb and Tgl in ° C.). An image forming method employing the photoreceptor is also disclosed.

Abstract: This invention discloses an arrangement allowing connection of various kinds of image displays to one supply source in an image display control system having a supply source for transmitting a signal including at least a video signal, and an image display for receiving the signal and displaying a corresponding image. The supply source acquires characteristic data of the image display when it is powered on, determines a signal communication specification with the image display based on the acquired characteristic data, and communicates a signal including the video signal with the determined communication specification. The image display transmits characteristic data for specifying the characteristics of the image display to the supply source, and communicates the signal including the video signal in accordance with the determined communication specification. This invention also discloses an arrangement permitting changing the specifications and version of the control program of the image display.

Abstract: A display apparatus includes a display panel having display devices arranged in a matrix layout and driven through a plurality of row wirings and column wirings, a scanning unit to scan the row wirings, and a modulation unit to supply a modulation signal to the column wirings. A compensation unit applies compensation processing to compensate for fluctuation of display luminance due to the influence of voltage drop caused by a resistance of the row wiring to the image data, and a luminance control unit controls display luminance of the display panel based upon luminance information of the image data.

Abstract: In a display apparatus having a display panel 301 having display devices which are arranged in a matrix layout and driven through a plurality of row wirings and column wirings, a scanning unit 302 adapted to scan the row wirings, and a modulation unit 303 adapted to supply a modulation signal to the column wiring based upon image data, a compensation unit 304 adapted to apply compensation processing for compensating at least fluctuation of display luminance due to influence of voltage drop which is caused by a resistance of the row wiring to the image data, and a luminance control units 306A, 306B, 306C adapted to control display luminance of the display panel, based upon luminance information of the image data are provided.

Abstract: There is here provided an image display apparatus that adjusts a change of a drive condition resulting from an electrical resistance of a matrix wiring of a display panel scarcely using a hardware. The apparatus has an adjusted image data calculation unit that generates adjusted image data that is the image data to which adjustment is applied for relaxing an influence of a voltage drop caused by the electrical resistance of a row wiring for the input image data of one horizontal scan interval, wherein the adjusted image data calculation unit is provided with means for discretely forecasting and calculating a voltage drop amount in the space and time directions, to be generated on the row wiring during the one horizontal scan interval corresponding to input image data and means for calculating the adjusted image data in which adjustment is applied to the image data.

Abstract: In order to obtain a satisfactory image by making a peak luminance of an image to be displayed large and suppressing an occurrence of unnecessary period, there is provided a display driving method for driving a display with a plurality of scanning wirings and a plurality of modulation wirings, comprising: a step of supplying a scan selection signal to a scanning wiring selected out of the plural scanning wirings for each horizontal scanning period; and a step of supplying a modulation signal modulated in accordance with image data to the plural modulation wirings for each horizontal scanning period, in which the selection period of the scan selection signal varies between at least two horizontal scanning periods in a vertical scanning period.

Abstract: An image processing method, comprises the steps of: reading out corrected data from a memory which prestored the corrected data, by referring to low P bit (P is an integer number grater than or equal to 1, and less than or equal to M) in M bits digital image data (M is an integer number grater than or equal to 2); calculating corrected data based on data for operation read out from the memory which prestored the data for operation, wherein the data for operation is read out from the memory by referring to high R bit (R is an integer number grater than or equal to 1, and less than or equal to M-1) in the digital image data; and outputting the read-out corrected data in case that a value of the digital image data is not greater than a predetermined value, and outputting the calculated corrected data in case that the value of the digital image data is greater than the predetermined value.

Abstract: Provided is an image display method for an image display device including a plurality of electron emission elements and a fluorescent substance that emits light by electron irradiation from the electron emission elements, the method including: storing a fluorescent substance correction value for correcting variation in the light emitted from the fluorescent substance; continually updating an emission current correction value for correcting variation in an emission current; and driving the image display device based on the fluorescent substance correction value and the updated emission current correction value. According to the method, it is possible to correct both the variation in emission currents and the variation in light emitted from fluorescent substances, and to suppress the unevenness of light emitted in the image display device.

Abstract: Provided are image display apparatus and image display methods capable of suitably making correction for variation of driving conditions due to an electric resistance of matrix wiring of a display panel by downsized hardware. The apparatus and methods involve a device of calculating voltage drop amounts caused by the resistance of row wires, for input image data, and a device of calculating image data with correction for the voltage drop amounts (corrected image data). An overflow processing circuit is provided so as to prevent overflow of the image data after the correction from an input range of a modulator, and the overflow is prevented by a gain. Since a gradation converter for changing a gradation conversion characteristic by a gain is provided in the stage preceding to the configuration for making the correction for influence of the voltage drop, it becomes feasible to cancel saturation characteristics of phosphors and to display images with high quality thereby.