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:
May. 08, 2007
Filed:
Feb. 18, 2000
Magnus G. Karlsson, McKinney, TX (US);
Norayda N. Humphrey, McKinney, TX (US);
Gregory Lee Christison, McKinney, TX (US);
Magnus G. Karlsson, McKinney, TX (US);
Norayda N. Humphrey, McKinney, TX (US);
Gregory Lee Christison, McKinney, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A Universal Serial Bus (USB) modem () in which reassembly and segmentation operations are performed outside of the host computer () is disclosed. A USB interface device () is coupled to a digital signal processor (DSP) () in the modem (), and contains a shared memory () in which bulk endpoints () are established, at which received ATM cell payload data may be stored. An ATM receive controller () is provided in the USB interface device (), which receives each ATM cell from the DSP () and interrogates the ATM cell header to determine which, if any, virtual connection the cell corresponds. The ATM receive controller () then forwards the payload portion of the ATM cell, but not the ATM cell header, to the endpoint () corresponding to the virtual connection to which the ATM cell is directed. The disclosed ATM receive controller () also includes logic () for calculating a cyclic redundancy check value over the payload portion of the ATM cells that make up an ATM packet.