公开(公告)号：US3916380A

公开(公告)日：1975-10-28

申请号：US52160174

申请日：1974-11-06

申请人： NASA ,  ANDERSON TAGE O

发明人： FLETCHER JAMES C ADMINISTRATOR ,  ANDERSON TAGE O

IPC分类号： G06F13/40 ,  G06F15/173 ,  H04Q11/00

CPC分类号： G06F13/4022 ,  G06F15/17368

摘要： A switch controller in a multi-computer processing system functions to establish a data path between any two computers in the system and maintain that data path, without interference, while establishing other independent unidirectional data paths with other pairs of computers. All computers in the system are continuously and rapidly scanned for a request-to-send signal. Those computers that are already engaged in data transmission are leap-frogged by the scanning mechanism. When a request-to-send signal is detected by a particular scanning mechanism, that scanning mechanism stops at the computer generating the request, to provide for an interconnection between the requesting sender and the intended receiver. If during this interconnection phase, it is determined that the intended receiver is occupied, the interconnection is prevented from being completed and the scanning mechanism is instructed to resume scanning of the computers for another request-to-send signal.

摘要翻译： 多计算机处理系统中的开关控制器用于在系统中的任何两台计算机之间建立数据路径，并在不影响的情况下保持该数据路径，同时与其他计算机对建立其他独立的单向数据路径。 系统中的所有计算机都会连续快速地扫描请求发送信号。 那些已经从事数据传输的计算机被扫描机制所跳过。 当通过特定扫描机构检测到请求发送信号时，该扫描机制在生成请求的计算机停止，以提供请求发送者和预期接收者之间的互连。 如果在该互连阶段期间，确定预期的接收机被占用，则防止互连完成，并且指示扫描机制恢复对计算机的扫描以用于另一个请求发送信号。

公开(公告)号：US3889064A

公开(公告)日：1975-06-10

申请号：US45516374

申请日：1974-03-27

申请人： NASA ,  ANDERSON TAGE O

发明人： FLETCHER JAMES C ADMINISTRATOR ,  ANDERSON TAGE O

IPC分类号： H04B7/212 ,  H04J3/24 ,  H04J3/06

CPC分类号： H04B7/2125 ,  H04J3/24

摘要： Asynchronously multiplexed sample data sub-systems employ transmission over a single line to a remote synchronizer and demultiplexer. At the remote synchronizer, the data is recovered by synchronizing signals derived from the data itself. A sub-system, or satellite location, supplies continuously sampled binary data along with a satellite identification and synchronizing sequence as a satellite message frame. This information is supplied bit-serially, to a multiplexer junction. The multiplexed satellite information is delivered asynchronously onto a single line transmission channel with other like bit serial satellite message information from other satellite monitoring sites. Such satellite information is transmitted to a central collection and analysis site where it is demultiplexed according to the words and bits that make up a satellite message frame. At least two message frames from each satellite monitoring site are always placed on the single transmission channel as a single block of data for that satellite. This technique, at the demultiplexer, assures proper recognition of a desired message frame based upon a comparison of satellite identification sequences and a frame synchronization sequence.