JOSEPH G SPRINGER
Nursing in Philadelphia, PA

License number

Pennsylvania RN311240L

Professional information

Senior Instructor Video Technology At Fig Leaf Software

Position:

Senior Instructor Video Technology at Fig Leaf Software

Location:

Greater Philadelphia Area

Industry:

Design

Work:

Fig Leaf Software - Senior Instructor Video Technology

Switch Matrix For Data Transfers

US Patent:

4191941, Mar 4, 1980

Filed:

Apr 3, 1978

Appl. No.:

5/892905

Inventors:

Joseph F. Springer - Philadelphia PA
Donald H. Kaplan - Cherry Hill NJ

Assignee:

RCA Corporation - New York NY

International Classification:

H04Q 300

US Classification:

340166R

Abstract:

A switch matrix for connecting any one of a large number of communications lines, transmitting a message header, with any other non-busy one of the lines. A plurality of connection links are provided. A message header identifies a transmitting line carrying a request-to-send signal, and the address of a desired receiving line. Means responsive to a received header determines the availability of an unconnected link and the not-busy condition of the desired receiving line, and connects a selected link from the transmitting line to the desired receiving line, whereby to permit the transfer of information. A link-activity checker operates automatically to disconnect a link when transmission of data through the link ceases.