Canon Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Kazuhito Ohashi

Takashi Suzuki

Shinobu Arimoto

Takashi Sugiura

Takashi Kawai

Tokihiko Ogura

Masafumi Kamei

Noriyoshi Chizawa

Tetsuya Nakamura

Yuichi Ikeda

Nobuyuki Watanabe

Somei Kawasaki

Nobuatsu Sasanuma

Tsuguhide Sakata

Toshihiko Mimura

Hiroyuki Tsuji

Yasutomo Suzuki

Masahiro Inoue

Tsutomu Takayama

Akiko Kanno

Ryo Fujimoto

Akihiko Saito

Shingo Kitamura

Yoshifumi Iwasaki

Tomohiko Sasatani

Yoshiki Uchida

Ryuji Takenaka

Kazushige Takaki

Tomoichirou Ohta

Tsunao Honbo

Takao Sasakura

Junichi Noguchi

Koshiro Fukumoto

Seiichirou Satomura

Tetsuro Inoue

Saburou Nakazato

Kenshi Sakamoto

Hiroyuki Matsuoka

Tomohide Akiyama

Fumiyuki Tora

Tsuyoshi Maeda

Maho Fujiyama

A first fuel flow rate command value indicating a command value of a fuel input amount is calculated so that an output of a gas turbine matches a target output. An upper limit value of the first fuel flow rate command value is calculated based on a deviation obtained by subtracting, from an estimated value of a turbine inlet temperature of the gas turbine, a second limit value relating to the estimated value set such that the estimated value does not exceed a first limit value of the turbine inlet temperature.

Gas turbine control apparatus and gas turbine control method

A system display control unit causes a display unit to display a simulated system screen. A symbol selection unit receives a selection of a symbol from a user. A model display control unit causes the display unit to display a plant model in which a component model corresponding to the component represented by the selected symbol is emphasized. A model selection unit receives a selection of a component model from the user. A component information display control unit causes the display unit to display information about the component represented by the selected model.

Component information retrieval device, component information retrieval method, and program

An image input apparatus has an image sensor for photoelectrically converting image information of an object into an electric signal and outputting the signal, and a correction circuit for adjusting a fluctuation of offset components generated during photoelectric conversion contained in the signal output from the image sensor to correct the offset components. Images of good quality can be obtained by correcting the offset components contained in the signal output from the image sensor.

Image input apparatus

Image signals output from a linear image sensor which outputs charges accumulated in pixels in the right-side area and charges accumulated in pixels in the left-side area via different channels are subjected to discrepancy correction. First, a gray reference board is scanned by the linear image sensor while changing charging periods, and look up tables for converting signal levels of the respective channels are generated on the basis of signal levels obtained by scanning the gray reference board. A discrepancy correction is realized by converting levels of image signals output from the two terminals using the look up tables.

Discrepancy correction method and apparatus for correcting difference in levels of image signals obtained by an image sensor having a multiple output channels

The object of this invention is to provide an image reading apparatus capable of greatly reducing generation of a black streak image caused by dust, dirt, or the like at a flow scanning position on a document glass table in flow scanning of reading a document image while moving the document sheet at a predetermined speed. To achieve this object, the CPU of the image reading apparatus performs dust detection processing of detecting dust on the document glass table by a dust detection circuit during a document nonreading period. The CPU executes dust correction processing based on the dust detection result during continuous document reading. During an interval between the end of a series of image reading JOBs and the next image reading JOB, the CPU performs dust avoidance processing of changing the flow scanning position to a position free from any dust on the document glass table. If dust is difficult to avoid, the CPU inhibits flow scanning and executes control of switching flow scanning to optical scanning document reading.

Image reading apparatus and program

Since an apparatus has a linear image sensor for scanning an image at the stop position of a mirror table from a document that moves at a constant speed, a black stripe image detection circuit for detecting the presence/absence of generation of a black stripe image on the basis of an image signal, and a CPU for determining that dust or soil is attached to the surface of the platen glass upon detection of generation of the black stripe image, and making control for changing the stop position of the mirror table and control for displaying a warning message, any black stripe generated due to dust or soil on the platen glass surface is detected in the sheetfed scanning mode, and the control for changing the sheetfed scan position or the control for displaying a warning message indicating that dust or soil is attached to the platen glass surface is done in accordance with the detection result, thus reducing the frequency of occurrence of generation of a black stripe compared to a conventional apparatus.

Image scanning apparatus, image forming apparatus, image forming system, image scanning control method, and storage medium

Interpolation apparatus for offset sampling of signals comprises a plurality of interpolation circuits whose interpolation methods are different from each other and a selection circuit which selects one of outputs of the interpolation circuits according to the degree of correlation between a group of pixels located in the surrounding area of an interpolation pixel and another group of pixels located in the surrounding area of the group of pixels.

Interpolation apparatus for offset sampling signals

This invention provides an image reading method and apparatus which can prevent a large difference from being produced between the color tones of the read image and the original image. A plurality of signals output from an image sensor (,) are A/D-converted into a plurality of digital signals by A/D conversion circuits (,), a predetermined one of the A/D-converted digital signals is compared with a predetermined reference level by a comparator (,), a low-pass filter (,) removes any high-frequency component from the comparison result, and the output from the low-pass filter (,) is controlled to be input to the A/D conversion circuits (,) as a reference voltage for determining the input range of each A/D conversion circuit (,).

Image reading apparatus for reducing color differences

An image signal recording apparatus for recording, on a recording medium, image signals corresponding to an image in which one picture is composed of a plurality of horizontal scanning lines is arranged to store the image signals for one picture, to simultaneously output N kinds (N: an integer at least 2) of image signals corresponding to N number of horizontal scanning lines adjacently located on the picture, and to simultaneously record, in different areas on the recording medium, the N kinds of image signals. This arrangement enables the apparatus to record an image signal of a high picture quality on the recording medium with a high degree of density.

Image signal recording apparatus

When an image from a scanner or an external apparatus is to be printed out, in order to achieve both high color reproducibility and high gray reproducibility, a black signal is extracted from an input color image signal, the ratio of the extracted black signal to the color image signal is changed in accordance with an input instruction, and an output operation is performed in accordance with the extracted black signal and the color image signal. When a color image signal is formed by scanning an image, a black signal is extracted from the color image signal, a high-frequency component of the extracted black signal is removed, and an output operation is performed in accordance with the black signal, from which the high-frequency component is removed, and with the color image signal.

Color image forming method and apparatus

This invention has as its object to provide an image reading apparatus which can prevent color mixing even when a linear image sensor in which charge transfer units are arranged to sandwich light-receiving units of different colors therebetween is used. In order to achieve the object, the image reading apparatus includes: a linear image sensor which is constituted by a plurality of image line sensors (301, 302, 303) respectively having a plurality of color filters, and transfer units (304-309) for transferring charges from the image line sensors, so that a charge obtained by a light-receiving/storage operation of at least one color image line sensor (302) is transferred to the transfer units (306, 307) via the image line sensor (303) of another color; and a subtraction circuit for subtracting a value obtained by multiplying a charge obtained by the light-receiving/storage operation of the image line sensor (303) of the other color with a correction coefficient from the charge transferred via the image line sensor (303) of the other color.

Image reading apparatus for reading a color image by irradiating light

According to an image pickup apparatus of this invention, a light source illuminates an object, an image pickup unit picks up an image of the illuminated object, an amplifier circuit amplifies the output signal for the image pickup unit, and a control unit adjusts the light amount of the light source after setting the maximum gain of the amplifier circuit and controls the image pickup unit to pickup the image of the object. An image pickup operation can be performed by irradiating an object with a minimum amount of light that the circuitry is capable of coping with.

Image pickup apparatus

It is an object to identify a failed portion in a circuit for image processing and notify a service center of the failed portion, thereby enabling the failed circuit to be promptly replaced. Circuit portions of image processing units are constructed on separate substrates. As processing routes of an image signal which is inputted from an A/D converting unit, a route in which the image signal passes through a given circuit portion and a route in which the image signal doesn't pass therethrough are set. Data of a predetermined pattern is processed by those processing routes. The presence or absence of a failure of each circuit portion is discriminated from the processing results. The discrimination result is transmitted to an external apparatus installed in a service center.

Image processing apparatus capable of remotely diagnosing failed portion

An image reading apparatus, having RGB photoreceptors comprising a CCD line sensor, reduces influence of color mixture due to intrapixel transfer in which electric charges from a photoreceptor are transferred via another photoreceptor. The RGB photoreceptors are provided close to each other in parallel, between CCD shift units corresponding to the photoreceptors. The electric charges generated at the G photoreceptor and the B photoreceptor are directly transferred to the CCD shift units. The electric charges generated at the R photoreceptor are transferred to the CCD shift units via the B photoreceptor. That is, the electric charges generated at a photoreceptor having a larger electric charge-generating characteristic are transferred via a photoreceptor having a smaller electric charge-generating characteristic. Further, a transfer direction in which the electric charges are transferred and a subscanning direction in which an original is conveyed upon reading by the photoreceptors are in the same direction. Thus the amount of color mixture can be reduced.

Image sensing device and image reading apparatus using the same that

Growing community of inventors

Shizuoka, Japan

Kazuhito Ohashi