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:
Aug. 29, 2000
Filed:
Dec. 07, 1998
Karl Nordling, Raleigh, NC (US);
Cirrus Logic, Inc., Fremont, CA (US);
Abstract
A modem interface unit is provided for coupling a communications modem to a host processor. The modem interface unit includes a host interface for coupling to a host processor, an anlog interface for coupling to a communications modem and a digital signal processor for performing signal processing operations on modem signals as they are transferred from the host interface to the analog interface and vice versa. A memory is provided for use in moving the modem signals through the interface unit. A sleep mode mechanism is provided for discontinuing the supplying of operating current to the digital signal processor when no modem signals have been transmitted or received for a predetermined period of time.