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:
Dec. 25, 1990
Filed:
Apr. 11, 1989
Abstract
A device embodying the invention for a packet time-division switcher comprises essentially a circuit for detecting beginnings and ends of load interruption periods in the switcher, and a period counter. The detecting circuit is connected to a plurality of input buffer quenes of the switcher and detects a load interruption when all queues signal a state of packet emptiness. A time base of the switcher is inhibited at the end of a period of predetermined duration established by the counter and following the detection of a load interruption. Said duration is predetermined so as to complete the switching of a packet that has been begun. Once the time base is inhibited, the operating of the switcher is interrupted and its power consumption becomes very low. The time base is freed as soon as a packet is received by the queues, and the switcher resumes operating.