MEANS AND METHOD FOR A SYNCHRONOUS NETWORK COMMUNICATIONS SYSTEM

• US 20010038674A1
• Filed: 07/31/1998
• Published: 11/08/2001
• Est. Priority Date: 07/31/1997
• Status: Active Grant

• Current Assignee: Bc Leow
• Original Assignee: Stanford Syncom Incorporated
• Inventors: TRANS, FRANCOIS
• Granted Patent: US 6,377,640 B2
• Time in Patent Office: Days
• US Class Current: 375/355
• CPC Class Codes: H04B 1/00 Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0047 Decoding adapted to other signal detection operation in conjunction with sequence estimation or equalization H04L25/03286
• CPC Class Codes: H04L 1/0054 Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04L 25/085 Arrangements for reducing interference in line transmission systems, e.g. by differential transmission
• CPC Class Codes: H04L 25/14 Channel dividing arrangements , i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver
• CPC Class Codes: H04L 25/497 by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems transversal equalizers at the transmitter end H04L25/03343
• CPC Class Codes: H04L 7/0008 Synchronisation information channels, e.g. clock distribution lines

Abstract

Nodes on a network are synchronized with each other using a clock transfer system. The communications channels between the nodes are then measured and calibrated for optimal bandwidth. The optimized channels and synchronization enables a new form of signaling based on precise control of the frequency, amplitude, and phase of the waveform of the signal. Receiving nodes receive information in order to locate the signal at the appropriate frequency, phase and amplitude. Precision control of these parameters also servers as a unique signature of the transmitting node preventing security breaches as the signal'"'"'s characteristic are unique to the transmitting node. The channel is continuously updated with a precision control system to insure that the nodes are not out of phase.

Claims

1. A method for increasing bandwidth of signals between a transmitting node and receiving node coupled over a communications channel comprising the steps of:

receiving time synchronization data;

synchronizing the transmitting and receiving node using the synchronization data received;

measuring the capacity of the communications channel between the nodes;

calibrating the communications channel using the capacity measurements;

equalizing channel and signal distortions;

coding the signal to the amplitude and frequency of the receiving node;

sampling the clock signals of the nodes;

responsive to a sampled clock signal of a node exceeding a phase interval, delivering phase delay controls to the nodes.