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    • 2. 再颁专利
    • Multi-user digital laser imaging system
    • 多用户数字激光成像系统
    • USRE38005E1
    • 2003-02-25
    • US09001595
    • 1997-12-31
    • Paul C. SchubertRichard R. LembergerTerrence H. JoyceTodd G. Langmade
    • Paul C. SchubertRichard R. LembergerTerrence H. JoyceTodd G. Langmade
    • G09G100
    • H04N1/2323H04N1/2307H04N1/2338H04N1/407H04N1/4078
    • A multi-user digital laser imaging system for imaging film from bar coded cartridges as a function of image values representative of the images to be printed. The imaging system includes memory for storing transfer functions and film models for each of several users. The transfer functions characterize the relationships between image values and expected imaged film transmittance quantities. The film models characterize the relationship between the transmittance quantities and laser drive values that will provide the appropriate film exposure. An image management subsystem generates lookup tables characterizing the relationship between image values and laser drive values on the basis of user-selected transfer functions and film models selected by the system through the use of film identification information read from the bar code. During imaging operations the image management subsystem accesses the lookup tables as a function of the image values to obtain the appropriate laser drive values. The transfer functions can be modified to accommodate user preferences. Test wedge calibration procedures are periodically implemented to correlate the film models to measured sensitometric characteristics. Density patch calibration procedures are performed during each imaging operation to correct for drifts caused by the film developing subsystem.
    • 一种多用户数字激光成像系统,用于根据代表要打印的图像的图像值来从条形码盒成像胶片。 成像系统包括用于存储多个用户中的每一个的传送功能和胶片模型的存储器。 传递函数表征图像值与预期成像膜透射率之间的关系。 电影模型表征了将提供适当胶片曝光的透射率和激光驱动值之间的关系。 图像管理子系统通过使用从条形码读取的胶片识别信息,基于用户选择的传递函数和系统选择的胶片模型,生成表征图像值与激光驱动值之间的关系的查找表。 在成像操作期间,图像管理子系统根据图像值访问查找表以获得适当的激光驱动值。 传输功能可以修改以适应用户偏好。 周期性地执行测试楔形校准程序,以将胶片模型与测量的感光特征相关联。 在每个成像操作期间执行密度补丁校准程序,以校正由成膜子系统引起的漂移。
    • 3. 发明授权
    • Light collection device for a film image digitizer
    • 用于胶片图像数字转换器的光采集装置
    • US5596190A
    • 1997-01-21
    • US459328
    • 1995-06-02
    • Yun Z. LiRichard R. LembergerPaul C. SchubertTerrence H. JoyceJack K. Warren
    • Yun Z. LiRichard R. LembergerPaul C. SchubertTerrence H. JoyceJack K. Warren
    • H04N1/04H04N1/028H01J3/14
    • H04N1/0283H04N1/028H04N1/02815
    • A light collection device for use in a film image digitizing apparatus comprises a housing having an elongated aperture extending along a light beam scan line. The aperture receives light transmitted through a sheet of film from a light source. A diffusing member, disposed within the aperture and extending along the scan line, optically diffuses the light received by the aperture. The housing may include one or more reflective interior surfaces. A linear array of photodiodes, disposed within the housing and extending along the scan line, detects the light diffused by the diffusing member. Each of the photodiodes generates an analog signal representing an intensity of the detected light for each of a plurality of pixels. A summing circuit, coupled to each of the photodiodes, sums the analog signals generated by the photodiodes for each of the pixels to produce an output analog signal representing an overall intensity of the light transmitted through the sheet of film for each of the pixels.
    • 一种用于胶片图像数字化装置的光收集装置包括具有沿光束扫描线延伸的细长孔的外壳。 孔径从光源接收透过薄膜的光。 设置在孔内并沿着扫描线延伸的漫射构件光学扩散由孔接收的光。 壳体可以包括一个或多个反射内表面。 设置在壳体内并沿着扫描线延伸的线状阵列的光电二极管检测由扩散构件扩散的光。 每个光电二极管产生表示多个像素中的每一个的检测光的强度的模拟信号。 耦合到每个光电二极管的求和电路对于每个像素的光电二极管产生的模拟信号求和,以产生表示针对每个像素的透过薄膜的光的总体强度的输出模拟信号。