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1. 发明授权

US4717954A Method and apparatus using a conversion table based on pre-printed color charts for determining half-tone dot percents required to reproduce the color of a color specimen 失效
公开(公告)号：US4717954A
公开(公告)日：1988-01-05
申请号：US608230
申请日：1984-05-08
申请人： Toshiji Fujita , Kazuo Yarita , Toshihiko Hashimoto , Masaki Nojima
发明人： Toshiji Fujita , Kazuo Yarita , Toshihiko Hashimoto , Masaki Nojima
IPC分类号： H04N1/405 , B41F33/00 , G03F3/08 , G03F5/00 , B41M1/14 , G01J3/52
CPC分类号： G03F5/00 , B41F33/0027
摘要： A method and apparatus for obtaining an accurate half-tone dot percent of each color separation where a color designated by a color specimen is to be reproduced by printing of ink of the colors, for example, yellow, magenta, cyan and black. A variety of color charts printed using predetermined combinations of half-tone dot percents are optically measured to obtain color information of the colors printed on the color charts. The obtained color information values together with the corresponding predetermined combinations of half-tone dot percents therefor are then utilized to prepare a conversion table of color information and corresponding half-tone dot percents for reproducing each of the colors printed on the color charts. A color specimen is then optically measured to detect color information of a color to be reproduced. The color information obtained from the color specimen is then successively compared with the color information of the conversion table, and the color information of the conversion table is selected which most closely corresponds to the color information obtained from the color specimen. The combination of half-tone dot percents corresponding to the selected color information from the conversion table is then displayed or otherwise outputted. The outputted combination of half-tone dot percents may then be used to reproduce the color designated by the color specimen. The method and apparatus also provides for interpolation operations if the color information obtained from the specimen does not precisely correspond to the color information in the conversion table. Further, the method and apparatus also provides for generating an expanded conversion table having expanded combinations of half-tone dot percents and corresponding expanded color information, and for performing an interpolation operation if a value of 0% and/or 100% is included in the combination of half-tone dot percents corresponding to the selected color information so as to obtain an interpolated combination of half-tone dot percents corresponding more closely to the color information obtained from the color specimen.

2. 发明授权

US4485413A Process and apparatus for converting a video frame into a set of color separation films 失效
标题翻译：将视频帧转换为一组分色膜的方法和装置
公开(公告)号：US4485413A
公开(公告)日：1984-11-27
申请号：US303558
申请日：1981-09-23
申请人： Haruo Furuta , Toshiji Fujita , Chihiko Yamada , Masaki Nojima
发明人： Haruo Furuta , Toshiji Fujita , Chihiko Yamada , Masaki Nojima
IPC分类号： G03F3/08 , H04N1/00 , H04N1/50 , H04N1/64 , H04N9/495
CPC分类号： H04N1/00294 , H04N1/508 , H04N1/646 , H04N1/00291
摘要： A color television video signal is directly read out in synchronism to the scanning speed of a scanner, the video signal thus read out is converted into three primary color signals, and these three primary color signals are in turn converted into process video signals, which are supplied to the scanner. A printing plate can be produced directly from a television video signal without requiring any color picture original.
摘要翻译：与扫描仪的扫描速度同步地直接读出彩色电视视频信号，由此读出的视频信号被转换为三原色信号，这三个原色信号又被转换为处理视频信号，提供给扫描仪。可以直接从电视视频信号产生印版，而不需要原始的彩色图像。

3. 发明授权

US4339769A Photography apparatus for television picture 失效
标题翻译：电视摄影机
公开(公告)号：US4339769A
公开(公告)日：1982-07-13
申请号：US159846
申请日：1980-06-16
申请人： Toshiji Fujita , Chihiko Yamada , Takeo Terashima , Masaki Nojima
发明人： Toshiji Fujita , Chihiko Yamada , Takeo Terashima , Masaki Nojima
IPC分类号： H04N1/00 , H04N1/50 , H04N1/64 , H04N5/78 , H04N5/84 , H04N9/02
CPC分类号： H04N1/00294 , H04N1/508 , H04N1/646 , H04N1/00291
摘要： A photography apparatus for television picture comprises a video tape recorder which detects a frame specifying signal recorded on an audio track corresponding to a frame image next to a predetermined frame image by a detecting head disposed before the audio head by a distance corresponding to one field in the direction of tape travel; a memory device for storing one frame image produced by the video tape recorder when the video tape recorder detects the frame specifying signal; an NTSC decoder for separating the signal stored in the memory into three primary color signals; a monochrome monitor for reproducing images corresponding to each of the three primary color signals produced by the NTSC decoder; and a camera with a vertically elongated aperture diaphragm for forming, on color film, multi-exposed images on the monochrome monitor through color filters passing only the respective primary color corresponding to each image.
摘要翻译：一种用于电视图像的摄影装置包括：磁带录像机，其通过设置在音频头之前的检测头与对应于预定帧图像相邻的一个场的距离来检测记录在与预定帧图像相邻的帧图像的音频轨道上的帧指定信号磁带旅行方向; 存储装置，用于当录像机检测到帧指定信号时存储由磁带录像机产生的一帧图像; NTSC解码器，用于将存储在存储器中的信号分离成三原色信号; 用于再现与由NTSC解码器产生的三原色信号中的每一个对应的图像的单色监视器; 以及具有垂直细长的孔径光阑的相机，用于通过仅通过对应于每个图像的各自原色的彩色滤光片在彩色胶片上形成单色监视器上的多曝光图像。

4. 发明授权

US4685139A Inspecting device for print 失效
标题翻译：检查设备进行打印
公开(公告)号：US4685139A
公开(公告)日：1987-08-04
申请号：US712151
申请日：1985-03-15
申请人： Toshiro Masuda , Kouichi Ishizuka , Toshiji Fujita , Yoshio Kinoshita
发明人： Toshiro Masuda , Kouichi Ishizuka , Toshiji Fujita , Yoshio Kinoshita
IPC分类号： B41F33/00 , G01N21/956 , G07D7/20
CPC分类号： G07D7/20 , B41F33/0036 , G01N21/956
摘要： The present invention relates to an inspecting device for a print which can scan the entire print pattern of a printed sheet by an optical detecting device, detects the image information of the print pattern at every pixel, calculates the difference between the detected image information with reference information, delays the differential signal in several pixels in the scanning direction of the optical detecting device, calculates the difference between the differential signal and the delayed differential signal, sets a threshold level to the twice differential signal produced from the result, and judges the production of a printing defect when the twice differential signal exceeds the threshold level, thereby accurately detecting the printing defect even when the entire variation in the color density occurs on the printed sheet.
摘要翻译：本发明涉及一种能够通过光学检测装置对打印片材的整个打印图案进行扫描的打印检查装置，检测每个像素处的打印图案的图像信息，计算检测到的图像信息之间的差异信息延迟光检测装置的扫描方向上的几个像素的差分信号，计算差分信号和延迟的差分信号之间的差，将阈值电平设置为由结果产生的两倍差分信号，并且判断生成当两倍差分信号超过阈值水平时，即使在印刷纸上出现色彩浓度的全部变化时也能准确地检测印刷缺陷。

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