Abstract: An optical transmission system including an optical transmission device and an optical reception device that receives, via an optical transmission line, a signal transmitted from the optical transmission device, the optical transmission system including a transmission-mode selection unit that selects transmission mode information in descending order of priority out of transmission mode information, which is combinations of a plurality of parameters concerning transmission performance, the transmission mode information being a plurality of kinds of the transmission mode information common to the transmission performance of the optical transmission device and the optical reception device, a signal transmission unit that transmits, to the optical reception device, a signal modulated based on the selected transmission mode information, and a signal reception unit that receives the signal and modulates the received signal based on the transmission mode information selected by the transmission-mode selection unit.

Abstract: An image forming apparatus includes, an image forming portion configured to form a toner image on a sheet using printing toner and apply powder adhesive on the sheet, a fixing portion configured to heat the toner image formed on the sheet and the powder adhesive applied on the sheet by the image forming portion and fix the toner image and the powder adhesive to the sheet, and a bonding portion configured to bond the sheet with the powder adhesive by reheating the sheet having been heated by the fixing portion. The bonding portion is arranged above the image forming portion.

Abstract: [Object] To detect airspeed and an airflow direction with respect to an airframe of a motorized aircraft with high accuracy without increasing the cost and weight and rapidly control attitudes of an electric propulsion system and the airframe in accordance with fluctuations of the airspeed and airflow direction.

Abstract: To provide an electric aircraft and an aerodynamic performance control method therefor that are capable of optimizing aerodynamic performance of a wing in each flight phase or an emergency such as gust action without depending on the shape of a wing. To provide an electric aircraft and an aerodynamic performance control method therefor that are capable of optimizing aerodynamic performance of a wing in each flight phase or an emergency such as gust action without depending on the shape of a wing.

Abstract: A belt examination system includes a defect candidate detecting processor that detects a candidate for a belt defect of an intermediate transfer belt of an image forming apparatus from a belt image, the defect candidate detecting processor executes a background pattern reduction step to reduce a texture-pattern like background noise present in the belt image and detects the candidate based on the belt image generated during the background pattern reduction step, the background pattern reduction step is to execute a locally adaptive binarization process on the belt image in a range having a specific size based on a typical size of the belt defect to generate a binary image and subtract the binary image from the belt image, and the binary image includes a first value into which a lowest color value of the belt defect is converted and a second value larger than the first value.

Abstract: A belt examination system includes a defect candidate detecting processor that detects a candidate for a belt defect that is an abnormal portion of an intermediate transfer belt of an image forming apparatus from a belt image that is an image of the intermediate transfer belt, the defect candidate detecting processor executes a background pattern reduction step to reduce a texture-pattern like background noise present in the belt image and detects the candidate based on the belt image generated during the background pattern reduction step, and the background pattern reduction step is to replace, in the belt image, a color value within a specific range of color values not including a lowest color value of the belt defect with a specific color value within the specific range.

Abstract: A motor control device includes: a power source device including a DC-output power conversion device having a first mode for outputting first voltage and a second mode for outputting second voltage higher than the first voltage; a power supply device; and a control device, and controls a motor. When a flying object takes off, the control device controls the power conversion device in the second mode. When the control device judges that flight information which is one or both of information of a motor parameter obtained along with control for the motor and information of an environmental factor relevant to the flight altitude satisfies a predetermined condition, or when the control device has received an operation mode signal for which the first mode is selected on the basis of the flight information during control for the motor, the control device controls the power conversion device in the first mode.

Abstract: A motor control device includes: a step-down device including a DC-output power conversion device having a first mode for outputting first voltage and a second mode for outputting second voltage lower than the first voltage; a power supply device; and a control device, and controls a motor. When a flying object takes off, the control device controls the power conversion device in the first mode. When the control device judges that flight information which is one or both of information of a motor parameter obtained along with control for the motor and information of an environmental factor relevant to the flight altitude of satisfies a predetermined condition, or when the control device has received an mode signal for which the second mode is selected on the basis of the flight information during control for the motor, the control device controls the power conversion device in the second mode.

Abstract: A belt inspection system to detect a belt defect of an intermediate transfer belt of an image forming apparatus using a first belt image obtained by photographing the intermediate transfer belt, performs a preprocessing on the first belt image to generate a second belt image, detects a candidate for the belt defect from the second belt image, and performs, in the preprocessing, a noise removal processing to remove a specific noise included in the first belt image, the specific noise including a noise caused by the photographing, a noise of a specific size based on an average size of the belt defect, and a band-shaped or streak-shaped noise extending in the width direction of the intermediate transfer belt.

Abstract: A belt examination system includes a defect candidate detecting processor that detects a candidate for a belt defect of an intermediate transfer belt of an image forming apparatus from a belt image, the defect candidate detecting processor executes a background pattern reduction step to reduce a texture-pattern like background noise present in the belt image and detects the candidate based on the belt image generated during the background pattern reduction step, the background pattern reduction step is to execute a locally adaptive binarization process on the belt image in a range having a specific size based on a typical size of the belt defect to generate a binary image and subtract the binary image from the belt image, and the binary image includes a first value into which a lowest color value of the belt defect is converted and a second value larger than the first value.

Abstract: A belt examination system includes a defect candidate detecting processor that detects a candidate for a belt defect that is an abnormal portion of an intermediate transfer belt of an image forming apparatus from a belt image that is an image of the intermediate transfer belt, the defect candidate detecting processor executes a background pattern reduction step to reduce a texture-pattern like background noise present in the belt image and detects the candidate based on the belt image generated during the background pattern reduction step, and the background pattern reduction step is to replace, in the belt image, a color value within a specific range of color values not including a lowest color value of the belt defect with a specific color value within the specific range.

Abstract: The present invention provides a riblet structure that further reduces drag, which is a sum of turbulent friction drag and pressure drag, and an object including such a riblet structure. An object such as an aircraft, plant, and pipeline includes a wavelike riblet pattern on a surface. The wavelike riblet pattern includes a large number of wavelike riblets. Each of the large number of wave riblets includes a wavelike ridge line, and a height thereof changes cyclically with respect to a fluid flow direction. With such a configuration, drag, which is a sum of turbulent friction drag and pressure drag, can be further reduced.

Abstract: A belt inspection system to detect a belt defect as an abnormal portion of an intermediate transfer belt of an image forming apparatus on the basis of a first belt image obtained by photographing the intermediate transfer belt, the belt inspection system comprising a defect candidate detector that performs a preprocessing on the first belt image and detects a candidate for the belt defect from a second belt image on which the preprocessing is performed, in which the preprocessing includes a noise removal processing for removing a noise caused by at least photographing of the intermediate transfer belt, and the noise removal processing removes, a noise caused by the photographing, a noise of a specific size, from the first belt image, in accordance with a standard size of the belt defect.

Abstract: To provide an electrified aircraft, and a method of controlling a regenerative electric power of the electrified aircraft where a path angle and a descending rate can be controlled with a good response independently from a speed while controlling the drag force of the propulsion drive system and where it is possible to maximize safely a generated electric power in each flight status at the time of descent or ascent. The electrified aircraft includes a propeller or a fan for propulsion; an electric drive motor for rotary-driving the propeller or the fan and for generating an electric power by the rotation of the propeller or the fan; and an estimation unit for estimating a drag force of the propeller or the fan or an electric power generation amount of the electric drive motor based on propulsion system parameters of the electric drive motor.

Abstract: The present invention provides a riblet structure that further reduces drag, which is a sum of turbulent friction drag and pressure drag, and an object including such a riblet structure. An object such as an aircraft, plant, and pipeline includes a wavelike riblet pattern on a surface. The wavelike riblet pattern includes a large number of wavelike riblets. Each of the large number of wave riblets includes a wavelike ridge line, and a height thereof changes cyclically with respect to a fluid flow direction. With such a configuration, drag, which is a sum of turbulent friction drag and pressure drag, can be further reduced.

Abstract: A lattice point group generating method generates a group of pre-color conversion lattice points to be contained in a color conversion table for conversion of colors in a color space having three channels to colors in another color space. The method includes generating sequences and generating lattice points. The generating sequences generates three van der Corput sequences in which the number of terms is equal to a quotient obtained by subtracting a specified number from a maximum number of lattice points allocatable to the color conversion table and dividing the difference by 12 or 6, and whose basis is a positive integer greater than or equal to 2. The generating lattice points generates lattice points each located at coordinates including terms in the same ordinal number out of the three respective van der Corput sequences for six possible associations of the three van der Corput sequences with the three channels.

Abstract: A motorized aircraft is controlled by a drive control means that rotationally drives a propulsion system propeller. The propulsion system propeller is driven by a plurality of electric motors. A comparison detection unit compares estimated propeller torque and estimated motor torque with each other and detects an abnormal state of an electric motor on the basis of the fact that a difference between the propeller torque and a multiple of the motor torque is above a predetermined value.

Abstract: To provide an electrified aircraft, and a method of controlling a regenerative electric power of the electrified aircraft where a path angle and a descending rate can be controlled with a good response independently from a speed while controlling the drag force of the propulsion drive system and where it is possible to maximize safely a generated electric power in each flight status at the time of descent or ascent. The electrified aircraft includes a propeller or a fan for propulsion; an electric drive motor for rotary-driving the propeller or the fan and for generating an electric power by the rotation of the propeller or the fan; and an estimation unit for estimating a drag force of the propeller or the fan or an electric power generation amount of the electric drive motor based on propulsion system parameters of the electric drive motor.

Abstract: A color gamut cross-section acquiring method for acquiring a cross-section of a color gamut of an image forming apparatus taken on a specific plane includes: acquiring color gamut boundary line segments; acquiring intersection points between the color gamut boundary line segments and the specific plane; acquiring a shortest possible route passing through each of the intersection points exactly once; acquiring each of line segments making up the route as a provisional cross-section boundary line segment; acquiring a set of verification line segments by connecting intersection points between the color gamut boundary line segments and a plane intersecting with the provisional cross-section boundary line segment at a point other than the endpoints of the provisional cross-section boundary line segment; and acquiring the provisional cross-section boundary line segment as a cross-section boundary line segment if the provisional cross-section boundary line segment intersects with the set of verification line segment

Abstract: This is a method for obtaining a cross-section of a color gamut of an image forming apparatus by slicing the color gamut along a plane. This method includes the steps of obtaining gamut boundary line segments, obtaining cross-section boundary line segments, and obtaining endpoints. The gamut boundary line-segment obtaining step is to obtain gamut boundary line segments serving as baseline segments of a boundary of the color gamut. The cross-section boundary line-segment obtaining step is to obtain cross-section boundary line segments serving as baseline segments of a boundary of the cross-section. The endpoints obtained in the endpoint obtaining step are points of intersection of the gamut boundary line segments and the plane. The cross-section boundary line segments obtained in the cross-section boundary line-segment obtaining step are line segments making up a route that is the shortest route passing through all the endpoints only once.