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1. 发明专利

JP2006261882A Image forming apparatus and image forming method 审中-公开
标题翻译：图像形成装置和图像形成方法
公开(公告)号：JP2006261882A
公开(公告)日：2006-09-28
申请号：JP2005074364
申请日：2005-03-16
申请人： Toshiba Corp , Toshiba Tec Corp , 東芝テック株式会社 , 株式会社東芝
发明人： TERUDA HIROKAZU , MIURA KUNIHIKO , SEKIZAWA HIDEKAZU
IPC分类号： H04N1/04 , H04N1/12 , H04N1/387
CPC分类号： H04N1/40062 , H04N1/40068
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which is kept high in character reproducibility and excellent in character decipherability, keeping files nearly as large in size as image data of low resolution.
SOLUTION: The image forming apparatus is capable of reading in a manuscript by mechanically scanning an axial light source in an auxiliary scanning direction vertical to the axis of the light source. The image forming device is characterized in that it is equipped with a sensor whose resolution in a main scanning direction is higher the designated resolution, a control unit which controls the drive speed of the axial light source so as to make its resolution in the auxiliary scanning direction higher than the designated resolution, an original image data forming unit which forms original image data whose resolution is higher than the designated resolution depending on the output of the sensor, and an image reducing unit which generates the reduced pixels from the prescribed number of the pixels in the original image data, wherein the number of the reduced pixels is smaller than the prescribed number of pixels in the original image data, and produces the reduced images whose resolution is set equal to the designated resolution.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种保持高字符再现性和良好的字符解码能力的图像形成装置，保持文件几乎与低分辨率的图像数据一样大。解决方案：图像形成装置能够通过在与光源的轴垂直的辅助扫描方向上机械扫描轴向光源来读取原稿。图像形成装置的特征在于，其配备有在主扫描方向上的分辨率高于指定分辨率的传感器，控制单元，其控制轴向光源的驱动速度以使其在辅助扫描中的分辨率方向高于指定分辨率，原始图像数据形成单元，其根据传感器的输出形成分辨率高于指定分辨率的原始图像数据;以及图像缩小单元，其从规定数量的原始图像数据中的像素，其中缩小像素的数量小于原始图像数据中的规定数量的像素，并且产生其分辨率被设置为等于指定分辨率的缩小图像。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2004343787A Image recording apparatus 有权
公开(公告)号：JP2004343787A
公开(公告)日：2004-12-02
申请号：JP2004172158
申请日：2004-06-10
申请人： Toshiba Corp , 株式会社東芝
发明人： HIGUCHI KAZUHIKO , YAMAMOTO TADASHI , SEKIZAWA HIDEKAZU , SAKAGAMI HIDEKAZU , KAWAKAMI HARUKO
IPC分类号： B41J2/52 , G06T5/00 , H04N1/23 , H04N1/405
摘要： PROBLEM TO BE SOLVED: To provide an image recording apparatus capable of recording an excellent gradation image of high definition and low noise without a density change or roughness in a low-density region, while using a recording system which is not suited to multi-level recording. SOLUTION: The image recording apparatus comprises a first signal converting means 3 for converting a pixel density value for a concerned pixel into a first recording control signal which specifies a recording amount for controlling a recording means, a second signal converting means 4 for referring to the recording control signal which specifies the recording amount, in at least one neighboring pixel linked to the concerned pixel to convert the pixel density value into a second recording control signal which specifies a recording amount with which image formation based on the first recording control signal is stabilized and which is closest to the first recording control signal, a recording means 5 for recording an image on the basis of the second recording control signal, and an error diffusing means 8 for calculating an error between an input density value of the concerned pixel and a recording density value in the second recording control signal, diffusing and propagating the error to unprocessed pixels which are positioned around the concerned pixel. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JPH0939294A IMAGE RECORDING DEVICE 失效
公开(公告)号：JPH0939294A
公开(公告)日：1997-02-10
申请号：JP19525895
申请日：1995-07-31
申请人： TOSHIBA CORP
发明人： YAMAMOTO TADASHI , SEKIZAWA HIDEKAZU
IPC分类号： B41J2/44 , G03G15/01 , H04N1/04 , H04N1/113 , H04N1/23 , H04N1/40 , H04N1/407 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To correct the shift of scanning lines while restraining the occurrence of stripe-like noises by preventing the shift of scanning lines and simultaneously correcting the density dislocation of recording images in reference with the image element pattern of image signals. SOLUTION: The auxiliary scanning position shift correction part 102 uses positional shift degree signals 159, 160, and corrects the shift in the auxiliary scanning direction of scanning lines composing recording images relative to the image signals while inputting image signals outputted from an image memory. The auxiliary scanning density shift correction means 103 corrects the density in the auxiliary scanning direction of the recording images accompanied by the correction of positional shift in the auxiliary scanning direction relative to the image signals outputted from the auxiliary scannig position shift detecting part 102. The main scanning position shift and density shift correction part 104 corrects each shift in the main scanning direction of the scanning lines composing the recording images relative to signals of the auxiliary scanning density shift correction part 103, and also converts the image signals into pulse width modulation signals and make them recording signals to the image recording part.

4. 发明专利

JPH08111778A IMAGE PROCESSOR 失效
公开(公告)号：JPH08111778A
公开(公告)日：1996-04-30
申请号：JP18024595
申请日：1995-07-17
申请人： TOSHIBA CORP
发明人： KAWAKAMI HARUKO , SEKIZAWA HIDEKAZU , YAMAMOTO TADASHI
IPC分类号： H04N7/18 , G06T1/00 , G06T1/20 , H04N1/21 , H04N1/407 , H04N9/77
摘要： PURPOSE: To provide an image processor which can give the optimum correction of density to various input images by generating the correction density data in response to the type of the input image that is acquired based on the mode set by a control panel means. CONSTITUTION: A scanner 1 scans an original, applies the photoelectric conversion to the reflected light of the original via a three-color filter, and then applies the A/D conversion to the reflected light undergone the photoelectric conversion to acquire a digital image signal Si'. The signal Si' is normalized into a color signal Si through a shading correction circuit 2. The signal Si is inputted to a matrix circuit 3 and separated into a luminance signal I and the color difference signals C1 and C2. The signal I undergoes the conversion of density and the texture processing through a gamma conversion circuit 4. The contents of the data stored in a ROM 5 are processed by a CPU 7 based on the input received from a control panel 6 so that the correction density data can be obtained. The panel 6 includes a mode setting switch, a density setting switch and a texture density setting lever.

5. 发明专利

JPH03191677A COLOR IMAGE PROCESSOR 失效
公开(公告)号：JPH03191677A
公开(公告)日：1991-08-21
申请号：JP32970289
申请日：1989-12-21
申请人： TOSHIBA CORP
发明人： KAWAKAMI HARUKO , SEKIZAWA HIDEKAZU , YAMAMOTO TADASHI
IPC分类号： H04N1/46 , G06T1/00
摘要： PURPOSE:To designate a correct area even to a color original or an original using the color paper by detecting the degree to get out of a reprodicible area and identifying a designated area via a fluorescent color marker. CONSTITUTION:A color signal Si received from a color scanner 101 is converted 102 into the intermediate value Sil and then converted 103 into an ink color signal Dj. Furthermore the signal Dj is converted 104 into an ink quantity signal Jj and the signal Dj is also inputted to a fluorescent color detecting circuit 105. Then a signal DFn produced to a picture element at decision of a fluorescent color is inputted to a mark area detecting circuit 16. The circuit 106 eliminates the noises from the the fluorescent color detection signal and detects a mark area to send it to an image editing processing circuit 109 as an area identification signal. The circuit 109 edits a quantity signal Tj via the area identification signal. The edited quantity signal TTj is supplied to a color printer 11, etc.

6. 发明专利

JPH03179571A PICTURE EDITING DEVICE 失效
公开(公告)号：JPH03179571A
公开(公告)日：1991-08-05
申请号：JP31785589
申请日：1989-12-08
申请人： TOSHIBA CORP
发明人： YAMAMOTO TADASHI , SEKIZAWA HIDEKAZU
IPC分类号： H04N1/387 , G06T1/00 , G06T11/60
摘要： PURPOSE:To improve the detecting accuracy in a frame area as well as the picture quality by detecting an editing picture signal for color frames, etc., and a picture signal to be edited for monochromic picture areas, etc., independently and applying the independent processing to both signals. CONSTITUTION:A color picture is read by a picture input part 1 as the picture signals of R, G and B and then converted into the ink quantity signals shown in the ink density of Y, M and C to be recorded at a picture recording part 8 via a color conversion part 2. Then the ink quantity signals are turned into the picture signals to be edited via a production part 3 for picture signals to be edited. These picture signals to be edited or ink quantity signals undergo the picture quality improvement processing and mainly the high frequency correction processing via a picture quality improvement processing part 4. At the same time, a color frame discriminating part 5 extracts the color frame information as the editing picture signals out of the ink quantity signals. Then an intra-frame area detecting part 6 detects the internal area of each color frame based on the color frame information. An editing processing part 7 applies the picture quality improvement processing to the signals received from the part 4 and the coloring editing processing is applied to the ink quantity signals with use of the area color signal received from the part 6. Then a picture is recorded at a picture recording part 8.

7. 发明专利

JPH0262671A COLOR EDITING PROCESSOR 失效
公开(公告)号：JPH0262671A
公开(公告)日：1990-03-02
申请号：JP21369888
申请日：1988-08-30
申请人： TOSHIBA CORP
发明人： SEKIZAWA HIDEKAZU , IWAMOTO AKITO , HIRAHARA SHUZO , YAMAMOTO TADASHI , SAITO TSUTOMU , HIGUCHI KAZUHIKO
IPC分类号： B41J2/485 , G06F17/30 , G06T1/00 , G06T11/60 , H04N1/387 , H04N1/58
摘要： PURPOSE:To directly perform an automatic and complicated editing process based on an original pointed by a color frame by using the color information on the color marks to set a method designated by a color mark, an editing working process function, the parameter of the process function, priority between the process function and the parameter, etc. CONSTITUTION:The color frame designating method, e.g., a free form frame or a circumscribed quadrilateral frame is designated by the color information on the detected color frame. Furthermore two pictures are partly synthesized with each other in equimultiple and in variable power when the coincidence and the discordance of colors are secured for designation of color frames between the synthesizer side and the side to be synthesized. In addition, the picture designated by a cold color frame is shifted to a position designated by a warm color frame. In such an editing way, a system contains a table showing the relationships among the colors, the functions, the priority, etc. Based on the table, the most rational instruction contents are decided by the color information designated by the detected color frame. Then an editing process is carried out by means of a position shift function, a magnification/reduction function, a color replacement function, an area-filling function, a trimming/masking function, a color changing function, etc.

8. 发明专利

JPH01140273A DISCRETE DENSITY CONVERTING METHOD 失效
公开(公告)号：JPH01140273A
公开(公告)日：1989-06-01
申请号：JP29796987
申请日：1987-11-26
申请人： TOSHIBA CORP
发明人： YAMAMOTO TADASHI , SEKIZAWA HIDEKAZU
IPC分类号： G06T3/40
摘要： PURPOSE:To suppress the generation of a moire noise or the deterioration of resolution and to convert with the small number of operations by interpolating and operating so as to equally contribute a converting signal to an original signal at the time of converting a discrete processing density with a converting ratio excluding a natural number and the inverse number thereof. CONSTITUTION:At the time of converting the discrete density of the discreted original signal Xi before conversion with the converting ratio R (R is a number excluding the natural number and the inverse number thereof), the value of the converting signal Yj is represented by a linear operation indicated by the equation I and an interpolating coefficient Aij is selected so as to satisfy the condition of the equation II. The equation I is represented by the equation III when the discrete densities of the original signal Xi and the converting signal Yj are respectively defined to be Px, Py. In the equation III, k=int(Qj), m=int(Qi+1), a=frac(Q), b=frac(Qj+1), R=Py/Px, Qj=R.j+c, int( ) indicates the integer part of a numeric value in ( ), frac( ) the decimal fraction part of a numeric value in ( ) and (c) a constant. In such a way, an enlargement/ reduction operation with no deterioration in a picture quality can be attained.

9. 发明专利

JPS62101180A PICTURE READER 失效
公开(公告)号：JPS62101180A
公开(公告)日：1987-05-11
申请号：JP24097285
申请日：1985-10-28
申请人： TOSHIBA CORP
发明人： YAMAMOTO TADASHI , SAITO TSUTOMU , SEKIZAWA HIDEKAZU
IPC分类号： H04N1/401 , G06K9/36 , G06T5/00 , H04N1/40
摘要： PURPOSE:To reduce a random noise included in a black reference signal by averaging a black reference signal, which is inputted through an A/D converter, in a standardizing circuit in the arrangement direction of photoelectric transducer of a line image sensor in an image pickup system. CONSTITUTION:A scanner carriage is moved to the position of a black reference plate 8 before reading the picture on an original 3, and signals of plural lines are taken out through the image pickup system. This signal is read into a standardizing circuit 10 from an A/D converter 7 and are accumulated for the same picture element, namely, signals obtained from the same photoelectric transducer in a line image sensor 5 by an adder 13 and a line memory 14, and the result is stored in a line memory 15. Contents of the line memory 15 are averaged in the main scanning direction (the arrangement direction of photoelectric transducers in the line image sensor 5), and contents of the memory 15 are rewritten with a running average, and it is used as an offset correcting signal.

10. 发明专利

JPS6297474A IMAGE PROCESSOR 失效
公开(公告)号：JPS6297474A
公开(公告)日：1987-05-06
申请号：JP23675985
申请日：1985-10-23
申请人： TOSHIBA CORP
发明人： KAWAKAMI HARUKO , SEKIZAWA HIDEKAZU , YAMAMOTO TADASHI
IPC分类号： H04N1/407 , H04N1/40 , H04N1/46 , H04N9/79
摘要： PURPOSE:To obtain a most appropriate correction density data corresponding to various input images by using a rewritable memory to a density conversion table which converts the density data of the input image to the correction density data of an output image. CONSTITUTION:A primary color signal read at a scanner 1 is sent to a matrix circuit 3 through a shading correction circuit 2. The matrix circuit 3 outputs a luminance signal I and color difference signals C1 and C2, and the luminance signal I is sent through a gamma conversion circuit 4, and the color difference signals C1 and C2 directly to a color conversion circuit 8. At such a time, the gamma conversion circuit 4 tries to change a density characteristic corresponding to the kinds of originals. In other words, when one mode out of plural modes is selected by an operation panel 6, a CPU7 reads a data stored at a ROM5 corresponding to the mode, and forms the correction density data. And the correction density data is added on the gamma conversion circuit 4, and a luminance signal I' on which a density conversion and a texture processing are applied can be obtained.

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