Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US00418696Aexternal-prioritypatent/US3852723A/en
Application filed by International Business Machines CorpfiledCriticalInternational Business Machines Corp
Publication of ES431922A1publicationCriticalpatent/ES431922A1/en
Management, Administration, Business Operations System, And Electronic Commerce
(AREA)
Abstract
A programmable signal distribution device, comprising: a plurality of inputs and a plurality of outputs; a set of cross-point switches connected between said inputs and said outputs; a memory cell connected to each of said cross point switches; means for writing a signal in each of said memory cells determining the state of the respective cross point switch and thus opening or closing said respective cross point switch according to said signal thereby connecting any one or more of said inputs to a selected plurality of outputs. (Machine-translation by Google Translate, not legally binding)
ES431922A1973-11-231974-11-14A programmable device for signal distribution. (Machine-translation by Google Translate, not legally binding)
ExpiredES431922A1
(en)
Supervisory arrangement for detecting faults in means for selecting crossing points corresponding to switching means ina reading matrix ina telecommunication system controlled by computers