Canon Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Akihiko Yamano

Takahiro Oguchi

Kunihiro Sakai

Katsunori Hatanaka

Hiroyasu Nose

Shunichi Shido

Toshihiko Miyazaki

Toshimitsu Kawase

Ryo Kuroda

Haruki Kawada

Yoshihiro Yanagisawa

Kazuya Miyazaki

Toshitami Hara

Shuji Aoki

Hiroshi Matsuda

Hidetoshi Suzuki

Kenji Saitoh

Hisaaki Kawade

Ken Eguchi

Minoru Yoshii

Eigo Kawakami

Akira Asai

Osamu Takamatsu

Hideyuki Kawagishi

Yuko Morikawa

Yuji Kasanuki

Mitsutoshi Kuno

Noritake Suzuki

Masataka Yamashita

Takehiko Kawasaki

Kiyoshi Takimoto

Eiji Yamaguchi

Hideaki Yui

Masahiro Tagawa

Teruyoshi Washizawa

Hideshi Kawasaki

Makoto Kanda

Hisafumi Ebisawa

Izumi Tabata

Takeshi Yamatoda

Hisashi Sakata

Tohsihiko Miyazaki

Tsutomi Ikeda

Sunichi Shido

Toshimitsu Kawasa

There is provided an image display apparatus having: display devices; a spacer; and a drive circuit. The drive circuit has a first correction circuit that corrects inputted data to make it linear with luminance and a second correction circuit. The second correction circuit has a calculation circuit for calculating an evaluation value and an adjustment circuit. The evaluation value relates to suppression effect that the spacer suppresses an influence on the light emission of a predetermined emitting region due to the inputted image data by driving non-corresponding display devices and is calculated by using the electric charge signal after converting a luminance signal into an electric charge signal. The adjustment circuit calculates an adjustment value that refers to a property of a phosphor based on the luminance signal and dynamically calculates the correction value by using the evaluation value and the adjustment value.

Image display apparatus

An electron emission apparatus can effectively suppress the adverse effect of electric discharges that can take place between the oppositely disposed electrodes of the apparatus to which a high voltage is applied by dividing the electrode adapted to have a higher electric potential into segments in order to reduce the electrostatic capacitance between the electrodes. In the case of an electron emission apparatus comprising electron-emitting devices, said plurality of electron-emitting devices are disposed such that the direction along which those that can be driven simultaneously are arranged is not parallel with the direction along which the electrode is divided into the electrode segments in order to reduce the variable range of the electric current that can flow in the segments.

Electron emission apparatus comprising electron-emitting devices, image-forming apparatus and voltage application apparatus for applying voltage between electrodes

An image display apparatus of smaller beam deviation is provided by making smaller the absolute value of an angle formed by an initial velocity vector of an electron emitted from the first electron-emitting devices closest to a spacerand a line parallel to the longitudinal direction of a spacer, rather than the absolute value of an angle formed by an initial velocity vector of an electron emitted from the second electron-emitting devices secondary closer to the spacerand the line parallel to the longitudinal direction of the spacer

Electron emission apparatus comprising electron-emitting devices, image forming apparatus and voltage application apparatus for applying voltage between electrodes

There is provided a characteristic adjustment method for an image forming apparatus that is provided with a multi-electron source in which a plurality of electron-emitting devices are electrically connected by wiring and arranged on a substrate and a fluorescent member for emitting light by irradiation of an electron beam, the method including: a measurement step of dividing a display portion of the image forming apparatus into a plurality of areas and measuring light emitting characteristics of at least one or more of the electron-emitting devices in the respective divided areas, and a shifting step of shifting the light emitting characteristics of the electron-emitting devices in the divided areas to individual characteristic target values by applying a characteristic shift voltage to the electron-emitting devices.

Characteristics adjustment method of image forming apparatus, manufacturing method of image forming apparatus and characteristics adjustment apparatus of image forming apparatus

A method of measuring luminance of an image display apparatus, a method of manufacturing the same, and a method and an apparatus for adjusting characteristics of the same, in which accuracy of measurement is improved while reducing time for measuring luminance of a pixel are provided. A plurality of devices that are not adjacent to each other (for example the devices of the same color out of R, G, and B) are selected and illuminated simultaneously, and luminance is measured for each of them. Based on measured luminance, the electron-emitting characteristics of the respective electron-emitting device as are adjusted based on measured luminance.

Method of measuring luminance of image display apparatus, method of manufacturing the same, method and apparatus for adjusting characteristics of the same

The present invention relates to the adjustment of luminance. The present invention is a method of manufacturing image forming apparatus including a step of applying characteristic shift voltage comprising a plurality of pulses in which the amplitude of the pulse obtained from the look-up table has two or more values, to the emitter, the look-up table storing the amplitude of the pulse and the number of the pulse for shifting characteristic of emitters to a predetermined luminance target value on the basis of the measurement result of the luminance. Moreover, the present invention is a method of manufacturing image forming apparatus comprising a step of applying the second pulses of characteristic shift voltage having the amplitude which was determined in response to the measurement result of the luminance after the first characteristic shift voltage had been applied to the emitter.

Method of manufacturing image forming apparatus

The present application discloses a characteristic adjusting method of executing a step of changing the characteristics of display devices in an image display apparatus. In particular, the present invention discloses a configuration in which target values for changes in characteristics are obtained by reducing the high-frequency components of the spatial distribution of the characteristics of the display devices.

Method of adjusting characteristics of electron source, method of manufacturing electron emission device

An electron emission apparatus effectively suppresses the adverse effect of electric discharges that can take place between the oppositely disposed electrodes of the apparatus to which a high voltage is applied by dividing the electrode adapted to have a higher electric potential into segments in order to reduce the electrostatic capacitance between the electrodes. In the case of an electron emission apparatus comprising electron-emitting devices, a plurality of electron-emitting devices are disposed such that the direction along which those that can be driven simultaneously are arranged is not parallel with the direction along which the electrode is divided into the electrode segments in order to reduce the variable range of the electric current that can flow in the segments.

Image display apparatus manufacturing method

An electron-beam generating device, in which a number of cold cathode elements are matrix-wired, as well as a method of driving the device, is applied to an image forming apparatus. Statistical calculations are performed in advance with regard to a required electron-beam output, and loss produced in the matrix wiring is analyzed. Drive signals are corrected by deciding optimum correction values based upon the analytical results. As a result, when rows of the matrix are driven successively row by row, the intensity of the outputted electron beams can made accurate for any driving pattern.

Electron-beam generating device having plurality of cold cathode elements, method of driving said device and image forming apparatus applying same

In an information processing apparatus, at least one of recording and reproduction of information is performed while two-dimensionally scanning a recording medium with a probe, utilizing a physical phenomenon occurring between the probe and the medium. The apparatus includes a scanning mechanism for effecting relative movement between the probe and the medium so as to translate the probe as drawing a circular or elliptic locus on the medium and a recording and/or reproducing circuit for performing at least one of the recording and reproduction of information, utilizing the physical phenomenon during the relative movement.

Information processing apparatus with probe undergoing circular motion

An information recording system includes a recording medium, and a probe electrode provided at a location opposed to the recording surface of the recording medium. The probe electrode is capable of recording on the recording medium by application of a voltage between the probe electrode and the recording medium. An elastic member supports the probe electrode for motion relative to a base member arranged perpendicular to the recording surface. The distance between the recording surface and the probe electrode is adjustable by a mechanism provided for that purpose. The displacement of the probe electrode caused by an interatomic force acting between the recording medium and the probe electrode is detected, and a displacement signal based on the detected displacement is output. A control circuit feeds back the displacement signal so that the probe electrode can move back to its original position.

Maintaining interatomic distance between an STM probe and a recording

Apparatus for storing image information in a recording medium, and outputting image information based on editing information includes dividing structure for dividing input image information. A memory is provided for storing each of the divided input image information. The memory includes a plurality of probes, each probe being arranged to oppose the recording medium. The memory also includes scanning structure for relatively moving the probes and the recording medium so that the probes scan a surface of the recording medium. The memory also includes recording and reproducing structure for recording the divided information on the recording medium by using the probes, and for reproducing the divided information recorded on the recording medium. Control circuitry is provided for controlling the scanning structure according to scanning procedures for each of the probes based on the editing information.

Apparatus for recording and reproducing image information in a recording

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Sagamihara, Japan

Akihiko Yamano