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. 11, 1998
Filed:
Sep. 28, 1995
Thomas J Barnes, Hillsboro, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A system for detecting an underrun condition in a block processing modem and upon detection retransmitting previously transmitted data or a fixed pattern of data. The system has a register or memory location that counts the symbols in a buffer located between the microprocessor and the DSP. As a symbol is added to the buffer by the microprocessor, the register is incremented. As a block of symbols is taken from the buffer by the DSP, the register decremented. Thus at any point in time, the register contains a count of the symbols in the buffer. When The DSP is ready for a next block of symbols, logic in the DSP compares the symbol count in the register and if the count is too low for the block of symbols to be passed to the DSP, the DSP itself sends either the previous set of data or a fixed pattern of data to the AFE. The error detection software operating in the software layer above the data pump detects an error and requests a retransmission.