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公开(公告)号：JP2001186351A
公开(公告)日：2001-07-06
申请号：JP36815799
申请日：1999-12-24
Applicant: CANON KK
Inventor： YAMADA YASUHIRO , YAMAGATA SHIGEO
Abstract: PROBLEM TO BE SOLVED: To record a picture of high picture quality superior in reproducibility, of an outline at high speed without irregular gradation from inputted binary picture information. SOLUTION: A two level conversion circuit 22 converts binary picture information inputted to an input buffer circuit 21 into two level picture data of the prescribed number of bits. A filter circuit 23 conducts a two-dimensional filtering operation. A pattern judgment circuit 32 judges whether a pixel of interest is included in the outline by comparing it with a prescribed pattern. The output of the input buffer circuit 21 is outputted to the pixel included in the outline and output from the filter circuit 23 to the pixel except for said pixel so as to output them. A irregular record correction circuit 24 corrects irregular record due to the difference of the characteristics of recording elements, conducts pseudo halftone gradation processing and supplies data to a recording head 14.
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公开(公告)号：JP2000183926A
公开(公告)日：2000-06-30
申请号：JP35159498
申请日：1998-12-10
Applicant: CANON KK
Inventor： YAMADA YASUHIRO
Abstract: PROBLEM TO BE SOLVED: To allow an operator to execute a desired JOB using available equipment among image inputting equipment and image outputting equipment connected with a network decided according to the operator using this system. SOLUTION: A user ID is inputted by the operating part of digital composite equipment 107. The inputted user ID is compared with user information stored in an HDD, and converted into class information set for each user ID. The equipment information designated by the class is transferred to the operating part. Thus, an operator can execute a desired JOB based on the device profile of the designated equipment on a multifunction system based on the equipment information displayed at the operating part.
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公开(公告)号：JPH10322512A
公开(公告)日：1998-12-04
申请号：JP13100697
申请日：1997-05-21
Applicant: CANON KK
Inventor： MIKAMI FUMIO , HIROSE MASAYUKI , YAMADA YASUHIRO , HAYASHI TOSHIO , MOTOYAMA EIICHI , ARAI KOJI , UMEDA YOSHINOBU , NONAKA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To transmit the image data of the first and second devices of different scanning periods to one side without the need of a large capacity page memory by alternately performing the operation of providing standard storage time and dummy storage time and reading valid image data through a buffer memory in a long cycle. SOLUTION: In the case of transferring the image data from the first device 100 requiring the storage time decided by a first cycle so as to obtain the image data of one line to the second device 200 provided with a second cycle for which a cycle capable of processing the data for one line is longer than the first cycle, in order to change a read cycle to be long without changing the storage time of a line sensor 101, the dummy storage time is set. The operation of providing the standard storage time and the dummy storage time is alternately performed, the valid image data are tentatively stored in a FIFO memory 111, dummy data are made to flow away and the valid image data are read in the long cycle adapted to the second device 200.
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公开(公告)号：JPH1040369A
公开(公告)日：1998-02-13
申请号：JP18941396
申请日：1996-07-18
Applicant: CANON KK
Inventor： MIKAMI FUMIO , YAMADA YASUHIRO
IPC: G06T3/40
Abstract: PROBLEM TO BE SOLVED: To generate multilevel image data and interpolating information corresponding to the variable power rate of binary additional information accompanied with the image data, and to generate black character information or the like before a processing for varying power. SOLUTION: A counter 102 operates addition by using a prescribed additional value corresponding to a pixel interval after varying the power as a unit synchronously with an interpolating pixel clock corresponding to an image after varying the power, and outputs the position data of interpolating pixels. Weighted mean at the pertinent positions is calculated by an invertor 103, multipliers 104 and 105, and adder 109 by using the position data, and this is outputted as the multilevel image data of the pertinent interpolating pixels. On the other hand, the position data from the counter 102 are inputted to comparators 106 and 110, and whether or not black character data inputted with multilevel picture data are succeeded to the pertinent interpolating pixel positions is decided. Then, the black character data corresponding to this result are outputted from an OR gate 112.
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公开(公告)号：JPH1016296A
公开(公告)日：1998-01-20
申请号：JP17513796
申请日：1996-07-04
Applicant: CANON KK
Inventor： YAMADA YASUHIRO , OTSUBO TOSHIHIKO
Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive high resolution recording head by realizing the assembling and adjustment in the direction of the optical axis through simple method and system thereby enhancing the mass productivity. SOLUTION: In the method for adjusting a recording head comprising a light emitting element array 1, and means 6 for focusing the light therefrom on an exposing plane, the image of light passed through the focus means 6 is read out by an image reading mean 32 and the emission pattern information therefrom is compared with a known reference emission pattern information. Position of the light emitting element array 1 and the focus means 6 is adjusted such that the emission pattern information is matched with the reference emission pattern information.
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Patent Agency Ranking
公开(公告)号：JPH09312763A
公开(公告)日：1997-12-02
申请号：JP12729796
申请日：1996-05-22
Applicant: CANON KK
Inventor： ITO YOSHINORI , YAMADA YASUHIRO
Abstract: PROBLEM TO BE SOLVED: To quantize multi-value image data into image data with a fewer gradation number by storing picture element strings around a picture element string including a noted picture element and processing the picture element strings together with the noted picture element string. SOLUTION: A parallel arithmetic type processor is mounted on a pseudo binarization processing section so that the binarization processing is processed in real time by the software. An SVP 41 conducts pseudo binarization processing according to a program in a program memory. A controller 42 gives a signal to a mode terminal of the SVP to change an operation mode and controls a selector 43. Prior to the processing in the usual mode, flag setting processing and random number setting processing required for the binarization processing by the SVP are conducted. In the usual processing mode, image data by one line are stored once in a register DIR and all the picture elements are simultaneously processed and after the output is stored in a register DOR at once, the result is outputted sequentially one by one picture element each.
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公开(公告)号：JPH09247429A
公开(公告)日：1997-09-19
申请号：JP5463396
申请日：1996-03-12
Applicant: CANON KK
Inventor： YAMADA YASUHIRO , ITO YOSHINORI
Abstract: PROBLEM TO BE SOLVED: To from and output high-definition image even at the time of forming an image with resolution different from reading resolution by removing information of a prescribed frequency component. SOLUTION: A first operation mode is the one used at the time of copying a normal original image. The second operation mode is the one used for obtaining a secondary output image. In the second operation mode, an optical low-pass filter 20 is arranged on an optical path between an image-forming lens 7 and a color image sensor 8 so as to execute the reading operation of the image. Therefore, when the image is read with the optical low-pass filter, image information is held when a frequency is a cut-off frequency or below but the high frequency component of image information to be the cause of a moire and a nonuniformity is removed. Thus, the position of the optical low- pass filter 20 is changed-over in accordance with the operation mode so that high frequency component of the prescribed frequency or above is cu by considering ink dot resolution and the cause of the moire and the nounifomity is eliminated.
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公开(公告)号：JP2575138B2
公开(公告)日：1997-01-22
申请号：JP16943887
申请日：1987-07-07
Applicant: CANON KK
Inventor： KAMONO TAKESHI , MATSUOKA MIKIHARU , KANEMOTO TAKASHI , MYAZAKI YASUKO , YAMADA YASUHIRO , KATAYAMA HIROHIKO
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公开(公告)号：JPH0872316A
公开(公告)日：1996-03-19
申请号：JP20748994
申请日：1994-08-31
Applicant: CANON KK
Inventor： YAMADA YASUHIRO
Abstract: PURPOSE: To well select a plurality of systems corresponding to the characteris tic of an image. CONSTITUTION: In a recording control part 55, when a gray density signal is predetermined density or more, a control signal 401 permitting the formation of an image is outputted to a PWM part 53 and a control signal 402 prohibiting the formation of an image is outputted to a dummy halftone processing part 50. Therefore, the formation of an image of an electrophotographic system due to a semiconductor laser 11 and the formation of an image of an ink jet system due to ink jet heads 37a-37d are not superposed one upon another.
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公开(公告)号：JPH07323535A
公开(公告)日：1995-12-12
申请号：JP11902294
申请日：1994-05-31
Applicant: CANON KK
Inventor： YAMADA YASUHIRO
Abstract: PURPOSE:To prevent image quality at a joint part of an band image from being deteriorated by a simple structure. CONSTITUTION:Respective data of RGB obtained by reading are converted to data of YMC with a logarithmic conversion circuit 6. Then, they are converted to appropriate data of YMCK with an output masking circuit 8. The converted data of YMCK are made binary with a pseudo halftone processing circuit 10 via a gamma-conversion circuit 9, and recorded with a recording head of each color. Herein, a conversion characteristic controlling part 50 judges whether or not a pixel to be watched is positioned near an end part of a recording head and generates a parameter corresponding to each. The output masking circuit 8 receives the parameter, and converts the outputted data of YMCK according to the parameter.
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