-
公开(公告)号：US4969712A
公开(公告)日：1990-11-13
申请号：US369883
申请日：1989-06-22
CPC分类号： G02B6/4246 , G02B6/12004 , G02B6/30
摘要： An edge emitting optoelectronic source is integrally formed on a surface of a semiconductor substrate. An optical waveguide is integrally formed on the same surface of the substrate adjacent to the source. The waveguide is aligned with the source for optical coupling of the source to the waveguide. The waveguide comprises an optical diverter for diverting at least a portion of any light propagating along the waveguide toward the source through a surface of the waveguide. An optoelectronic detector is secured to that surface of the waveguide through which light is diverted for receiving light diverted through that surface. The resulting optoelectronic apparatus is suitable for launching and detecting optical signals in large volume bidirectional optical fiber transmission systems.
-
公开(公告)号：US5751454A
公开(公告)日：1998-05-12
申请号：US728427
申请日：1996-10-10
CPC分类号： H04J14/0289 , H04J14/0212 , H04J14/0227 , H04J14/0283 , H04Q11/0062 , H04J14/0282 , H04J14/0284 , H04Q11/0066 , H04Q2011/0039 , H04Q2011/0086 , H04Q2011/0092
摘要： The invention is directed to the use of wavelength channels to bypass nodes in ring networks. For networks with a small number of nodes, direct node to node routes are provided without changing the physical layout of the fibre in the ring. Architectures providing complete transparent interconnections with extra capacity for heavily used routes on a portion of the ring are disclosed. For networks with a large number of nodes, underconnected networks provide a number of accelerated, direct routes between some of the nodes. Proposed architectures for underconnected networks and methods for self-routing the traffic are also provided.
摘要翻译： 本发明涉及使用波长信道来绕过环形网络中的节点。 对于具有少量节点的网络，提供直接的节点到节点路由而不改变环中的光纤的物理布局。 公开了提供完整的透明互连的体系结构，其具有在环的一部分上的大量使用的路线的额外容量。 对于具有大量节点的网络，不连接的网络在一些节点之间提供了多条加速的直接路由。 还提供了用于不连接网络的建议架构和自动路由流量的方法。
-
公开(公告)号：US4337531A
公开(公告)日：1982-06-29
申请号：US149765
申请日：1980-05-14
申请人： Herman W. Willemsen
发明人： Herman W. Willemsen
CPC分类号： G11B7/1384 , G11B7/0937 , G11B7/123 , G11B7/13 , G11B7/0901 , G11B7/0909
摘要： In a scanning head for an optical disc system, a light beam from a laser is transmitted through a monomode optical fiber and then focussed on a record carrying surface of an optical disc by a converging lens. The end of the fiber can be reoriented within orthogonal planes perpendicular to the plane of the record carrying surface by transducers so as to correct for tracking and timing errors. The laser diode can function both as an emitter and, in an external cavity mode, as a detector of light reflected from the disc. Drive to the transducers is dependent on tracking and speed error signals generated from the detected light. For tracking and speed error compensation, only lens fiber end, and, optionally, a collimating lens, which are of negligible weight, need be moved rather than the entire scanning head. This provides a simple structure having a high frequency response and low power consumption.
摘要翻译： 在用于光盘系统的扫描头中，来自激光器的光束通过单模光纤传输，然后通过会聚透镜聚焦在光盘的记录载体表面上。 纤维的端部可以通过换能器重新定向在垂直于记录载体表面的平面的正交平面内，以便校正跟踪和定时误差。 激光二极管可以作为发射器起作用，并且在外腔模式中可以作为从盘反射的光的检测器。 传感器的驱动取决于从检测到的光产生的跟踪和速度误差信号。 对于跟踪和速度误差补偿，只有透镜光纤端和可选择的重量轻微的准直透镜才需要移动，而不是整个扫描头。 这提供了具有高频响应和低功耗的简单结构。
-
公开(公告)号：US4672600A
公开(公告)日：1987-06-09
申请号：US835927
申请日：1986-03-04
CPC分类号： G06K7/10861 , G11B23/30 , G11B27/19 , G11B7/0901 , G11B7/24056
摘要： An optical disc assembly has an optical disc and a protective cover. The optical disc has a surface adapted to have optically recorded thereon data consisting of a series of laser ablated pits recorded as a series of concentric data tracks. The pits have small size and high surface density. The protective cover has a permanent optical recording at one surface thereof consisting of a series of visible marks. The marks are an order of magnitude larger than the pits and have a much lower surface density. Memory data is recorded on the optical disc and positional data, comprising a map of the memory data surface, is recorded on the cover. This allows the use of separate positional data and memory data monitoring channels which facilitates the recording of a blank optical disc and subsequent memory data access.
摘要翻译： 光盘组件具有光盘和保护盖。 光盘具有适于在其上光学记录的数据，其由记录为一系列同心数据轨道的一系列激光烧蚀凹坑组成。 凹坑具有小尺寸和高表面密度。 保护盖在其一个表面上具有由一系列可见标记组成的永久光学记录。 标记比凹坑大一个数量级，并且具有低得多的表面密度。 存储器数据被记录在光盘上，并且包括存储器数据表面的映射的位置数据被记录在盖上。 这允许使用分开的位置数据和存储器数据监视通道，便于记录空白光盘和随后的存储器数据存取。
-
公开(公告)号：US4366488A
公开(公告)日：1982-12-28
申请号：US136533
申请日：1980-04-02
摘要： A terminal has a reciprocating print head bearing a series of linearly arranged, individually-magnetizable styli for printing on magnetic particle oriented paper. The terminal may be used as a printer, or as a display by combining the printer with an erasing head comprising a series of linearly arranged magnets which create a rotating magnetic field to erase the magnetic particle oriented paper when the erasing head is reciprocated. The print and erase heads are mounted on a common carriage. The terminal is cheap to manufacture and, if used as a printer, has the advantage of reusable paper. If used as a display, it required no refresh.
摘要翻译： 端子具有往复式打印头，其具有一系列线性布置，可单独磁化的测针，用于在面向磁性颗粒的纸上打印。 终端可以用作打印机，或者通过将打印机与包括一系列线性排列的磁体相结合的显示器来使用，该擦除头在擦除头往复运动时产生旋转磁场以擦除磁性颗粒定向的纸张。 打印和擦除头安装在公共托架上。 终端制造便宜，如果用作打印机，则具有可重复使用的纸张的优点。 如果用作显示器，则不需要刷新。
-
-
-
-
搜索结果
5 条记录 (耗时 0.011 秒)