Patent Number: 6,295,314

Title: Method and apparatus for partitioning a modem between non-real-time and real-time processing environments

Abstract: A communications system includes a host computer, a modem communication unit, and a link interface unit. The host computer is capable of generating a plurality of user frames of digital data. The modem communication unit includes a frame buffer, an idle indicator insertion unit, and a modulator. The frame buffer is adapted to receive the user frames. The idle indicator insertion unit is adapted to generate an idle indicator if the frame buffer contains no user frames for transmission. The modulator is adapted to receive at least one of the user frames and the idle indicator to generate transmit data. The modulator is adapted to generate a plurality of waveform samples based on the transmit data. The link interface unit is adapted to receive the plurality of waveform samples and generate an analog transmit signal based on the plurality of waveform samples. A method for transmitting data includes generating a plurality of user frames of digital data. The user frames are stored in a frame buffer. It is determined if the frame buffer contains user frames for transmission. An idle indicator is generated in response to determining no user frames for transmission. Transmit data is generated based on at least one of the user frames and the idle indicator. A plurality of waveform samples is generated based on the transmit data. An analog transmit signal is generated based on the plurality of waveform samples.

Inventors: Cole; Terry L. (Austin, TX)

Assignee: Advanced Micro Devices, Inc.

International Classification: H04L 27/00 (20060101); H04B 001/38 (); H04L 005/16 ()

Expiration Date: 09/25/2018