摘要:
A two-cycle engine includes a port timing control device for varying a timing of the opening of an exhaust port by a piston. The port timing control means includes a first valve mounted within an exhaust passage adjacent to an upper end of the exhaust port and having a port timing control surface, a second valve mounted on a cylinder block between a cylinder head and the first valve and having a closure surface, and an urging member acting on the second valve to always urge it against the first valve. The first valve is operable to be angularly moved about an axis generally perpendicular to the axis of a cylinder into and out of an extended position where the control surface is disposed slightly below the upper end of the exhaust port to close a part of the exhaust port. The second valve is movable along a generally straight path into and out of an extended position where the closure surface closes that portion of the exhaust port lying between the upper end of the exhaust port and the first valve. The second valve is movable in synchronism with the angular movement of the first valve through the urging member.
摘要:
A multi-color marker editing system for editing a color image by reading a designated marker. The multi-color marker editing system includes an image reading unit for reading color image data, a color-coordinate converting unit for converting the read image data into color data in a color coordinate system defined by optical density, hue and saturation, a color detecting unit for detecting a designated marker color from the read color image data, an image density converting unit for converting a density of the detected marker color image data, and a marker editing unit for making a marker color editing for each color to the density-converted marker color image data.
摘要:
An area control system for an image processing apparatus including a input unit 1 for inputting image signals, a area control unit 2 for generating control signals according to a specified area, document type and processing mode, and a processing unit 3 having a plurality of processing blocks 3-1, 3-2, . . . for processing image signals by setting parameters in the processing blocks 3-1, 3-2, . . . , comprises a decode unit 4 for generating signals to switch the parameters in the processing blocks 3-1, 3-2, . . . of the processing unit 3 by control signals for each area generated by the area control unit 2. The decode unit distributes the control signals from the area control unit to the processing blocks, through the decode unit 4. With such an arrangement, when the area control unit 2 merely outputs the document type and a processing mode for each area, such as an input mode and an output mode, the decode unit 4 automatically generates control signals for the processing blocks 3-1, 3-2, . . . and distributes them to the processing blocks. If the decode unit 4 is provided for each processing block 3-1, 3-2, . . . , the processing system and the processing blocks, if required, can be altered or modified for each processing block.
摘要:
A texture image processing system for image processing apparatus comprises, first calculator for calculating a maximum value and a minimum value of texture image data; second calculator for calculating an average value and a gain value with employment of said maximum value and minimum value; and synthesizing processor for synthesizing texture image data by image picture data, this synthesizing processor synthesizing the texture image data with the image picture data by multiplying a difference between the texture image data and the average value by the gain value. Also, synthesizing processor synthesizes the texture image data with chromaticity information of the image picture data, or chromaticity information of the image picture data with predetermined chromaticity information, chromaticity information of the texture image data. With the above-described structures, both of hue and saturation in the image picture data are maintained, and also the synthesized texture image having no great brightness change over its entire region is obtained.
摘要:
A matrix unit receives a luminance signal L* for a uniform color space and two color difference signals a* and b*. Then, when a control signal has given instructions for a mono-color editing operation, the matrix means outputs only the luminance signal L* out of the picture image data fed into it, and, when a control signal is given otherwise, the matrix means generates and outputs toner color signals for the colors Y, M, C, and K. A multiplying unit multiplies with a prescribed coefficient the picture image data which are output from the matrix unit, and the multiplying unit multiplies the picture image data with a coefficient for permitting the toner signal output from the matrix unit to pass through in case the control signal has not given any instructions for any mono-color editing operation, and multiplies the input luminance signal L* with four coefficients corresponding to the color as instructed by the control signal and generate four toner color signals for Y, M, C, and K. The coefficients have the data form representing the coverage of the toner colors, Y, M, C, and K.
摘要:
A color copying apparatus is capable of making copies without performing a prescan. Input image data of RGB format read from an image input unit is written in an image memory through the shading/gap correction unit and an input &ggr; correction unit. This input image data is supplied to a detection unit through a first color space conversion unit to distinguish color from monochrome in the input image data, and to detect the base color level and the like. Next, on the basis of these detection results, states of a second color space conversion unit, a selector, a frame-erase/base color removal unit and the like are set. Thus, the input image data is read out again from the image memory, and is supplied to an image output unit through the first color space conversion unit to an output &ggr; correction unit.
摘要:
A color image editing apparatus capable of improving color detecting accuracy, color-converting a chromatic color into a neutral (achromatic) color and vice verse and performing a hue conversion, while maintaining gradation. The color image editing apparatus in which image signals read out by an image reading unit are converted to density, hue and chroma signals by color display coordinate system convertor to perform a color image editing operation inlcudes a detector for detecting whether or not density, hue and chroma of a detected color image is within predetermined density, hue and chroma ranges, respectively. It is judged by a judging unit whether or not a color of the detected color image is of a predetermined color in responses to an output of the detector, and a color changing unit means converts the density, hue and chroma independently in response to the judgement result of the judging unit.
摘要:
A marker dot detecting device for a color image recording apparatus such as a color copying machine, color facsimile, or color printer. The marker dot detecting device includes a marker dot detecting unit for detecting a marker dot by detecting a plane size of binary image data having a preset marker color. Further, the marker dot detecting unit includes a template mask unit having a first template mask in a predetermined first size and a second template mask in a predetermined second size larger than the first size, the second template mask including the first template mask. The template mask unit outputs a marker dot detecting signal when a detected size of the marker dot is larger than that of the first template mask and smaller than that of the second template mask.
摘要:
An image processing system for use with a color copier and other image recording apparatus. The system performs operations that comprise filling closed areas of interest with designated solid colors without uncolored holes.