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    • 42. 发明授权
    • Method and apparatus for controlling image data transfer in a photographic film scanner
    • 用于控制摄影胶片扫描仪中的图像数据传送的方法和装置
    • US06211975B1
    • 2001-04-03
    • US09134609
    • 1998-08-14
    • Steven M. Bryant
    • Steven M. Bryant
    • G03F310
    • H04N1/00241H04N1/00236H04N1/12H04N1/193H04N1/40056H04N1/484H04N2201/0025H04N2201/0408
    • A photographic film scanner has a line integration light sensor and a programmed controller which employs a plurality of lookup tables (LUT) sequenced by a common timer to control the timing of data collection and transfer to an asynchronously operating host computer. Delays in the transfer of image data to the host computer which exceed the light sensor line integration time can cause the integrated pixel scan information to become corrupted. Data corruption caused by delays in excess of line integration time is avoided by disabling the light sources and the related image scan operations until it is determined that prior line data transfer to the host is completed whereupon the accumulated data is collected and transferred to the host computer and normal scan operations are re-initiated. Even with the LEDs disabled, excessive build-up of dark current in the light sensors can corrupt the accumulated image information in the light sensor. This corruption is prevented by detecting the excessively long delay, flushing the corrupted data out of the light sensor and re-scanning the image line to develop a fresh line of image data for transfer to the host computer.
    • 摄影胶片扫描器具有线路集成光传感器和编程的控制器,其使用由公共定时器排序的多个查找表(LUT)来控制数据收集和传送到异步操作的主计算机的定时。 将超过光传感器线路积分时间的图像数据传输到主机的延迟可能导致集成像素扫描信息被破坏。 通过禁止光源和相关的图像扫描操作,直到确定先前的线路数据传输到主机才能完成累积的数据被收集并传送到主计算机来避免由延迟超过线路积分时间引起的数据损坏 并重新启动正常的扫描操作。 即使LED禁用,光传感器中暗电流的过度累积也会损坏光传感器中累积的图像信息。 通过检测过长的延迟,将损坏的数据从光传感器中刷新并重新扫描图像线以开发用于传送到主计算机的新鲜的图像数据线来防止这种损坏。
    • 45. 发明授权
    • System and method for improving facsimile delay tolerances
    • 提高传真延迟公差的系统和方法
    • US5790641A
    • 1998-08-04
    • US666800
    • 1996-06-19
    • Christina K. ChanHongsoon H. KwonSimon S. LamWilliam A. Larson
    • Christina K. ChanHongsoon H. KwonSimon S. LamWilliam A. Larson
    • H04L12/56H04N1/00H04M11/00
    • H04N1/00312H04L47/10H04N1/00281H04N1/32795H04N2201/0015H04N2201/0025H04N2201/0034
    • A system and method for extending the time period at which a response signal can be received before a time-out occurs without altering the length of the time-out period defined in any transmission protocol, ensuring that the two faxes communicate using one of a predefined, e.g., standard, set of transmission protocols, and/or ensuring that the two faxes communicate using one of a predefined set of signal modulation techniques. The present invention receives signals transmitted from a local fax and transmits these signals to a remote fax. Similarly, the present invention receives signals transmitted from the remote fax and transmits these signals to the local fax. The present invention examines the contents of the signals and can modify the signal transmitted to the local fax in order to ensure that the two faxes communicate using a transmission protocol that is supported by the present invention and to ensure that the two faxes communicate using a signal modulation technique that is supported by the present invention.
    • 一种用于延长在超时之前可以接收到响应信号的时间段的系统和方法,而不改变在任何传输协议中定义的超时周期的长度,确保两个传真使用预定义的一个进行通信 ,例如标准的传输协议集合和/或确保两个传真使用预定义的一组信号调制技术之一进行通信。 本发明接收从本地传真发送的信号并将这些信号发送到远程传真。 类似地,本发明接收从远程传真发送的信号并将这些信号发送到本地传真。 本发明检查信号的内容,并且可以修改发送到本地传真的信号,以便确保两个传真使用本发明支持的传输协议进行通信,并且确保两个传真使用信号进行通信 本发明支持的调制技术。