Method and apparatus for reducing signal processing requirements for transmitting packet-based data
US7406119B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2002 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Apr 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13396
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver circuit of the modem is coupled to receive a continuous analog signal from a communication channel. This analog signal includes both packet and idle information. A burst mode protocol is also provided, in which packets of digital information are modulated by a transmitter circuit of the modem, thereby converting the packets of digital information into analog signal bursts of discrete duration. These analog signal bursts are transmitted from the transmitter circuit to a telephone line. A receiver circuit monitors the telephone line to detect the analog signal bursts. Upon detecting the presence of the analog signal bursts on the telephone line, the receiver circuit demodulates the analog signal bursts using full processing capabilities of the receiver circuit. However, upon detecting the absence of the analog signal bursts on the telephone line, the demodulating function of the receiver circuit is disabled. The burst mode protocol enables multi-drop and multi-cast operation, as well as reducing required DSP resources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.