The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
May. 04, 1987
Charles B Johnson, Dallas, TX (US);
Jeffrey L Box, Farmers Branch, TX (US);
David B Hildebrand, Bedford, TX (US);
SRX Corporation, Dallas, TX (US);
Abstract
A distributed switching system (20) is provided for implementation in an integrated circuit utilizing a switching bus (30) in which bus lines (30a-30n) are time division multiplexed serial data streams consisting of time slots used for both transmit and receive directions. The bus lines (30a-30n) comprise a single bi-directional bus used for both inter-processor communication and for transparent voice and data switching. The distributed switching system (20) includes a bus line selector (31) to select one of the plurality of bus lines (30n-30n) to perform space switching functions. A slot counter (32) is provided for selecting one of a plurality of time slots on the plurality of bus lines (30n-30n) to perform a time switching function. Interface shift registers (33, 35) are interconnected for transmitting to and receiving data from the switching bus (30). Interconnected to the bus registers (33, 35) is a line interface register (34) for transmitting to and receiving data from a digital instrument.