Per-Tone Delay Adjustment for Multi-Tone Systems
First Claim
Patent Images
1. A data transmission circuit, comprising:
- an interface to receive a data stream for transmission;
a data stream splitter to split the data stream to produce multiple substreams;
a plurality of parallel data preparation circuits, each data preparation circuit to prepare a corresponding substream for transmission and to generate a respective sub-channel signal;
wherein at least two of the data preparation circuits each comprises a programmable element to receive a respective delay value and to delay the corresponding substream in accordance with the respective delay value; and
a combiner to combine the respective sub-channel signals to generate a data transmission signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A data transmission circuit has an interface for receiving a data stream for transmission, a data stream splitter, a plurality of parallel data preparation circuits, and a combiner. The data stream splitter splits the data stream to produce multiple substreams, the plurality of parallel data preparation circuits prepare a respective substream for transmission and generate a respective sub-channel signal, and the combiner combines the respective sub-channel signals to generate a data transmission signal. At least two of the plurality of data preparation circuits each include a programmable element for delaying the corresponding substream.
18 Citations
23 Claims
-
1. A data transmission circuit, comprising:
-
an interface to receive a data stream for transmission; a data stream splitter to split the data stream to produce multiple substreams; a plurality of parallel data preparation circuits, each data preparation circuit to prepare a corresponding substream for transmission and to generate a respective sub-channel signal; wherein at least two of the data preparation circuits each comprises a programmable element to receive a respective delay value and to delay the corresponding substream in accordance with the respective delay value; and a combiner to combine the respective sub-channel signals to generate a data transmission signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of transmitting data, comprising:
-
receiving a data stream for transmission; splitting the data stream to produce multiple substreams at a data stream splitter; preparing the multiple substreams for transmission, wherein the preparing comprises, for each of at least two respective substreams, receiving a respective delay value and delaying the respective substream in accordance with the respective delay value; generating respective sub-channel signals from the multiple substreams; and combining the respective sub-channel signals to generate a data transmission signal. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A data communications system, comprising:
-
a communications channel; a data transmission circuit at a first end of the communications channel, the data transmission circuit to output a data transmission signal carrying at least two parallel data streams onto the communications channel, the data transmission signal being a combination of at least two data signals each carrying a different one of the at least two parallel data streams using a different frequency band, the at least two data signals being offset in phase at the first end of the communications channel and being substantially aligned in phase at a second end of the communications channel; and a data receiving circuit at the second end of the communication channel, the data receiving circuit to extract each of the at least two parallel data streams from the data transmission signal; wherein the data transmission circuit is to offset at least two data signals in phase according to at least one delay value. - View Dependent Claims (16, 17)
-
-
18. A method of transmitting data, comprising:
-
transmitting a data transmission signal at a first end of a communications channel, wherein the data transmission signal carries at least two parallel data streams onto the communications channel, the data transmission signal being a combination of at least two data signals each carrying a different one of the at least two parallel data streams using a different band of frequencies, the at least two data signals being offset in phase at the first end of the communications channel according to at least one delay value; selecting the at least one delay value such that the at least two data signals are substantially aligned in phase at a second end of the communications channel; and extracting each of the at least two parallel data streams from the second end of the communications channel. - View Dependent Claims (19)
-
-
20. A multi-tone device, comprising:
-
at least one data pin to be coupled to a first end of a first communications channel; a data transmission circuit coupled to the at least one data pin, the data transmission circuit to output a data transmission signal carrying at least two parallel data streams onto the first communications channel, the data transmission signal being a combination of at least two data signals each carrying a different one of the at least two parallel data streams using a different band of frequencies, the at least two data signals being offset in phase at the first end of the first communications channel according to at least one delay value, the at least one delay value being selected such that the at least two data signals are substantially aligned in phase at a second end of the first communications channel. - View Dependent Claims (21, 22, 23)
-
Specification