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1. 发明公开

EP0108625A3 Improvements in and relating to document scanners 有权
公开(公告)号：EP0108625A3
公开(公告)日：1985-04-10
申请号：EP83306719
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N01/10
CPC分类号： H04N1/10 , H04N1/193
摘要： A document scanner is described in which a book can be offered up to a wedge-shaped housing containing at least one window through which one page of the book can be viewed. The book is carried by a trough shaped support which is movable up and down as required and may be fully floating to allow different thicknesses etc. of book to be accommodated. The book support is itself rotatable about a vertical axis to an opposite page of a book to be presented to the window. A lamp is incorporated in the housing off-axis to illuminate the page to be scanned theough the viewing corridor. The scanning element is typically an elongate array of photosensitive junctions and scanning is achieved by electrically addressing each of the junctions in succession.

2. 发明公开

EP0109237A2 Improvements in and relating to document scanners 失效
标题翻译：文件扫描仪的改进
公开(公告)号：EP0109237A2
公开(公告)日：1984-05-23
申请号：EP83306715.0
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N1/2036 , H04N1/10 , H04N1/1017 , H04N1/193 , H04N1/203 , H04N2201/0434
摘要： A document is described for scanning a page of a book comprising:-

1. a movable housing having at least one flat face containing a window through which light from a document to be copied can pass.
2. a scanner within the housing adapted to scan an image of the document to generate an electrical video signal corresponding to the information carried by the document, '
3. means for supporting a book face upwards so that the book can be moved into contact with the window,
4. a pivoting joint between the housing and a support therefor to permit rotation of the housing into at least one other position in which the window is unobstructed and light from a remote document can be directed therethrough to from the image to be scanned.
摘要翻译：描述了用于扫描书页的文档，其包括：1.可移动外壳，其具有至少一个包含窗口的平坦表面，来自待复制文档的光可以通过该窗口。 2.一个位于外壳内的扫描器，用于扫描文件的图像以产生对应于文件所携带的信息的电视频信号; 3.用于向上支撑书面以使书可以移动到与所述窗口，4.所述外壳和支撑件之间的枢转接头，以允许所述外壳旋转到所述窗口未被阻挡的至少一个其他位置，并且来自远程文档的光可以通过所述至少一个其他位置被引导通过所述窗口以从待扫描图像。

3. 发明公开

EP0112016A2 Improvements in and relating to document scanners 有权
标题翻译： Dokumentabtaster。
公开(公告)号：EP0112016A2
公开(公告)日：1984-06-27
申请号：EP83306718.4
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N1/10 , H04N1/193
摘要： A document scanner is described in which an image of an illuminated information bearing document is formed by a lens and brought to focus in a plane containing a narrow line of photoelectric elements onto which the image falls, which elements are addressed in sequence to produce an electrical signal a parameter of which (such as amplitude) varies in sympathy with the incident light level on the individual elements as the latter are scanned, and means is provided for moving the line of photoelectric elements relative to the image, so that the latter can be scanned in a series of parallel bands, each of which is effectively "scanned" in a direction perpendicular to the movements of the elements by the sequential addressing of the elements making up the line, and the scanner further comprises a first housing within which the lens and line of photoelectric elements are housed and a second housing within which the first housing is mounted for sliding movement parallel to a window remote from the lens through which light from the document can pass, to form the image thereof in the plane containing the line of photoconductive elements.
摘要翻译：描述了一种文件扫描器，其中照射的信息承载文件的图像由透镜形成并使其聚焦在包含图像下降的光电元件的窄线的平面中，哪些元件依次被寻址以产生电信号，其参数（例如幅度）随同扫描时各个元件上的入射光水平的同情而变化，并且提供用于相对于图像移动光电元件的线的装置，使得后者可以以一系列平行的带扫描，每个平行带通过构成线的元件的顺序寻址而在垂直于元件的运动的方向上被有效地“扫描”，并且扫描器还包括第一壳体，透镜并且容纳光电元件线，并且第二壳体安装有第一壳体，用于平行于窗户遥控的滑动运动来自文件的光通过该透镜通过，以在包含光电导元件线的平面中形成其图像。

4. 发明公开

EP0108623A2 Improvements in and relating to document scanners 有权
标题翻译：文档扫描仪。
公开(公告)号：EP0108623A2
公开(公告)日：1984-05-16
申请号：EP83306714.3
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N1/10 , H04N1/193
摘要： A document scanner is described for scanning a page of a book comprising:-

1. a movable housing having at least one flat face containing a window through which light from a document to be copied can pass.
2. a scanner within the housing adapted to scan an image of the document to generate an electrical video signal corresponding to the information carried by the document,
3. means for supporting a book face upwards so that the book can be moved into contact with the window,
4. a pivoting joint between the housing and a support therefor to permit rotation of the housing into at least one other position in which the window is unobstructed and light from a remote document can be directed therethrough to form the image to be scanned.

5. 发明公开

EP0158409A3 Improved threshold detector 失效
标题翻译：改进的阈值检测器
公开(公告)号：EP0158409A3
公开(公告)日：1988-03-23
申请号：EP85300372
申请日：1985-01-21
申请人： The British Library Board
发明人： Brotton, James
IPC分类号： H04N01/40
CPC分类号： H04N1/403 , H04N1/401
摘要： A threshold detector, more especially when embodied in a document scanning device, wherein a varying amplitude video signal is compared with a threshold signal. In accordance with the invention, the threshold signal is produced by a circuit which comprises a counter (22) synchronized to the scanning to produce a sequence of digital values of each line of scan, a memory device (20) which stores digital values released by the digital values produced during scanning, and a D/A converter (26) which produces the required threshold voltage from the digital values released from the memory (Fig 1).
摘要翻译：一种阈值检测器，更具体地说在文档扫描装置中实现时，其中将变化幅度视频信号与阈值信号进行比较。根据本发明，阈值信号由电路产生，该电路包括与扫描同步的计数器（22）以产生每行扫描线的数字值序列;存储器件（20），其存储由扫描期间产生的数字值以及从存储器释放的数字值产生所需阈值电压的D / A转换器（26）。

6. 发明公开

EP0158409A2 Improved threshold detector 失效
标题翻译： Schwellendetektor。
公开(公告)号：EP0158409A2
公开(公告)日：1985-10-16
申请号：EP85300372.1
申请日：1985-01-21
申请人： The British Library Board
发明人： Brotton, James
IPC分类号： H04N1/40
CPC分类号： H04N1/403 , H04N1/401
摘要： A threshold detector, more especially when embodied in a document scanning device, wherein a varying amplitude video signal is compared with a threshold signal. In accordance with the invention, the threshold signal is produced by a circuit which comprises a counter (22) synchronized to the scanning to produce a sequence of digital values of each line of scan, a memory device (20) which stores digital values released by the digital values produced during scanning, and a D/A converter (26) which produces the required threshold voltage from the digital values released from the memory (Fig 1).
摘要翻译：一种阈值检测器，更具体地说在文档扫描装置中实现时，其中将变化幅度视频信号与阈值信号进行比较。根据本发明，阈值信号由电路产生，该电路包括与扫描同步的计数器（22）以产生每行扫描线的数字值序列;存储器件（20），其存储由扫描期间产生的数字值以及从存储器释放的数字值产生所需阈值电压的D / A转换器（26）。

7. 发明公开

EP0108626A2 Improvements in and relating to document scanners 失效
标题翻译：文件扫描仪的改进
公开(公告)号：EP0108626A2
公开(公告)日：1984-05-16
申请号：EP83306720.0
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N5/23212 , H04N1/028
摘要： A device as described for indicating the state of focus of an image of a document which is converted into a video signal by sequentially inspecting the incident light level at points within the image and generating an electrical signal having a parameter which varies with the light level. The device includes:-

(a) circuit means responsive to the electrical signal from sequential inspection of the image for integrating the amplitude variations thereof to produce a varying amplitude focus indication signal,
(b) amplifying means for generating from the varying amplitude signal a varying control signal,
(c) an indicator comprising a linear array of lamps,
(d) circuit means which provides operating current for the lamps the current being related to the amplitude of the focus indication signal, so that with increasing amplitude of the latter so more of the lamps are caused to be illuminated or vice versa, where all the lamps are illuminated to indicate a state of poor focus, and
(e) means for adjusting the focus of the image in response to visual inspection of the illuminated lamps, so as to obtain the best possible indication of the state of focus of the image.
摘要翻译：所描述的设备用于通过顺序地检查图像内的点处的入射光水平并产生具有随着光水平而变化的参数的电信号来指示文档的图像的焦点状态，所述文档被转换成视频信号。该装置包括：（a）响应于来自图像的顺序检查的电信号的电路装置，用于对其幅度变化进行积分以产生变幅幅度聚焦指示信号，（b）放大装置，用于从变幅信号产生变化（c）包括灯的线性阵列的指示器，（d）为灯提供工作电流的电路装置，电流与聚焦指示信号的幅度有关，从而随着后者的幅度增加更多的灯被点亮或反之亦然，其中所有的灯都被照亮以指示焦点不良的状态，以及（e）响应于对被照亮的灯的视觉检查而调整图像的焦点的装置，以便以获得图像焦点状态的最佳可能指示。

8. 发明公开

EP0108625A2 Improvements in and relating to document scanners 有权
标题翻译：文件扫描仪的改进
公开(公告)号：EP0108625A2
公开(公告)日：1984-05-16
申请号：EP83306719.2
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N1/10 , H04N1/193
摘要： A document scanner is described in which a book can be offered up to a wedge-shaped housing containing at least one window through which one page of the book can be viewed.
The book is carried by a trough shaped support which is movable up and down as required and may be fully floating to allow different thicknesses etc. of book to be accommodated.
The book support is itself rotatable about a vertical axis to an opposite page of a book to be presented to the window.
A lamp is incorporated in the housing off-axis to illuminate the page to be scanned theough the viewing corridor.
The scanning element is typically an elongate array of photosensitive junctions and scanning is achieved by electrically addressing each of the junctions in succession.
摘要翻译：描述了一种文件扫描仪，其中书可以被提供直至包含至少一个窗口的楔形外壳，通过该窗口可以查看书的一页。该书由槽形支架携带，可根据需要上下移动，并且可以完全浮动以允许容纳不同厚度的书。书本支架本身可以围绕垂直轴旋转到书的相对页面以呈现给窗户。一个灯离轴安装在外壳中，以照亮要观看走廊的扫描页面。扫描元件通常是光敏结的细长阵列，并且通过相继地电解决每个结来实现扫描。

9. 发明授权

EP0108625B1 Improvements in and relating to document scanners 有权
标题翻译：文件扫描仪的改进
公开(公告)号：EP0108625B1
公开(公告)日：1987-09-30
申请号：EP83306719.2
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N1/10 , H04N1/193

10. 发明授权

EP0112016B1 Improvements in and relating to document scanners 有权
标题翻译：对文件扫描仪的改进和相关
公开(公告)号：EP0112016B1
公开(公告)日：1987-07-29
申请号：EP83306718.4
申请日：1983-11-04
申请人： The British Library Board
发明人： Wilman, Hugh , Brotton, James
IPC分类号： H04N1/10
CPC分类号： H04N1/10 , H04N1/193

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