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. 04, 1994
Filed:
Nov. 26, 1991
Sony Corporation, Tokyo, JP;
Abstract
A matrix switching apparatus includes a plurality of switching units connected in tandem, each switching unit having a plurality of input terminals and a plurality of output terminals. There are a plurality of transmission/reception units, each provided within a respective switching unit and also within a remote control unit. The transmission/reception units are for transmitting switching data. A first one of the transmission/reception units is set to a master station mode and sequentially polls the remaining transmission/reception units which are set to a slave station mode. The remaining units respond to the polling by outputting switching data, which is collectively transmitted by the master station over a serial busline. The remaining transmission/reception units receive only relevant data from the switching data transmitted over the serial busline and supply the relevant data to controlling units which control the turning on and off of crosspoint switches in the switching units.