Configurable Frequency Band Elimination For Powerline Network

• US 20110143694A1
• Filed: 02/18/2011
• Published: 06/16/2011
• Est. Priority Date: 01/21/2005
• Status: Active Grant

• Current Assignee: Ryuichi Iwamura
• Original Assignee: Ryuichi Iwamura
• Inventors: Iwamura, Ryuichi
• Granted Patent: US 8,081,934 B2
• Time in Patent Office: Days
• US Class Current: 455/91
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 2203/5491 using filtering and bypassing
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

A communication device for use in adapting an appliance to a computer network consistent with certain embodiments has a data transmitter that receives data to be transmitted and generates output signals carrying the data at a plurality of carrier frequencies. A user configurable notch filter, receives the output signals from the data transmitter, for reducing the amplitude of a user selected range of frequencies, and producing a filtered output. A network communication medium interface receives the filtered output and transmitting the filtered output over a network communication medium. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

Claims

1. A power line communication (PLC) device for use in adapting an appliance to a PLC computer network, comprising:

a PLC data transmitter, comprising;

a forward error correction encoder receiving data to be transmitted and error correction encodes the data to produce an error corrected output;

an interleaver that receives the error corrected output and interleaves the error corrected output to produce interleaved output data;

a serial to parallel converter receiving the interleaved output data and producing a parallel output signal;

a modulator receiving the parallel output signal and producing a modulated output therefrom;

an inverse fast Fourier transformer receiving the modulated output and producing a transformed output signal at a plurality of frequencies;

a user configurable notch filter, receiving the transformed output, for reducing the amplitude of a user selected range of frequencies, and producing a filtered output; and

a PLC interface receiving the filtered output and transmitting the filtered output over the power line.

2. The power line communication (PLC) device in accordance with claim 1, wherein the user configurable notch filter is configured via a user interface, wherein the user interface is adapted to permit the user to select a frequency band to be attenuated by the user configurable notch filter, and wherein the user interface is further adapted to permit the user to select a time for deactivation of the attenuation of the selected frequency band.

3. The power line communication (PLC) device in accordance with claim 1, wherein the user configurable notch filter is configured via a user interface, wherein the user interface is adapted to permit the user to select a frequency band to be attenuated by the user configurable notch filter, and wherein the user interface is further adapted to permit the user to select a time for activation of the attenuation of the selected frequency band.

4. The power line communication (PLC) device in accordance with claim 1, wherein the user configurable notch filter is configured via a user interface, wherein the user interface is adapted to permit the user to select a frequency band to be attenuated by the user configurable notch filter, and wherein the user interface is further adapted to permit the user to select at least one day of the week for activation and deactivation of the attenuation of the selected frequency band for at least a portion of the selected day.

5. The power line communication (PLC) device in accordance with claim 1, further comprising means for generating a notch filter configuration request message specifying notch filter configuration parameters and transmitting the notch configuration request using the data transmitter.

6. The power line communication (PLC) device in accordance with claim 1, further comprising a receiver that receives a notch configuration request message specifying notch filter parameters, and means for configuring the user configurable notch filter in accordance with the specified notch filter configuration parameters received in the notch filter configuration request message.

7. The power line communication (PLC) device in accordance with claim 1, further comprising a processor that generates a notch filter configuration request message specifying notch filter configuration parameters and transmitting the notch configuration request using the data transmitter.

8. The power line communication (PLC) device in accordance with claim 7, further comprising a receiver that receives a notch configuration request message specifying notch filter parameters, and a processor that configures the user configurable notch filter in accordance with the specified notch filter configuration parameters received in the notch filter configuration request message.

9. The power line communication (PLC) device in accordance with claim 1, further comprising a receiver that receives a notch configuration request message specifying notch filter parameters, and a processor that configures the user configurable notch filter in accordance with the specified notch filter configuration parameters received in the notch filter configuration request message.

10. A power line communication (PLC) device for use in adapting an appliance to a PLC computer network, comprising:

a PLC data transmitter, comprising;

a forward error correction encoder receiving data to be transmitted and error correction encodes the data to produce an error corrected output;

an interleaver that receives the error corrected output and interleaves the error corrected output to produce interleaved output data;

a serial to parallel converter receiving the interleaved output data and producing a parallel output signal;

a modulator receiving the parallel output signal and producing a modulated output therefrom;

an inverse fast Fourier transformer receiving the modulated output and producing a transformed output signal at a plurality of frequencies;

a user configurable notch filter, receiving the transformed output, for reducing the amplitude of a user selected range of frequencies, and producing a filtered output;

a PLC interface receiving the filtered output and transmitting the filtered output over the power line;

wherein the user configurable notch filter is configured via a user interface, wherein the user interface is adapted to permit the user to select a frequency band to be attenuated by the user configurable notch filter, and wherein the user interface is further adapted to permit the user to select;

a time for deactivation of the attenuation of the selected frequency band, a time for activation of the attenuation of the selected frequency band, and at least one day of the week for activation and deactivation of the attenuation of the selected frequency band for at least a portion of the selected day;

means for generating a notch filter configuration request message specifying notch filter configuration parameters and transmitting the notch configuration request using the data transmitter;

a receiver that receives a notch configuration request message specifying notch filter parameters; and

means for configuring the user configurable notch filter in accordance with the specified notch filter configuration parameters received in the notch filter configuration request message.

11. A power line communication (PLC) device for use in adapting an appliance to a PLC computer network, comprising:

a PLC data transmitter, comprising;

a forward error correction encoder receiving data to be transmitted and error correction encodes the data to produce an error corrected output;

an interleaver that receives the error corrected output and interleaves the error corrected output to produce interleaved output data;

a serial to parallel converter receiving the interleaved output data and producing a parallel output signal;

a modulator receiving the parallel output signal and producing a modulated output therefrom;

an inverse fast Fourier transformer receiving the modulated output and producing a transformed output signal at a plurality of frequencies;

a user configurable notch filter, receiving the transformed output, for reducing the amplitude of a user selected range of frequencies, and producing a filtered output;

a PLC interface receiving the filtered output and transmitting the filtered output over the power line;

a programmed processor;

wherein the user configurable notch filter is configured via a user interface, wherein the user interface is adapted to permit the user to select a frequency band to be attenuated by the user configurable notch filter, and wherein the user interface is further adapted to permit the user to select;

a time for deactivation of the attenuation of the selected frequency band, a time for activation of the attenuation of the selected frequency band, and at least one day of the week for activation and deactivation of the attenuation of the selected frequency band for at least a portion of the selected day;

the programmed processor being programmed to generate a notch filter configuration request message specifying notch filter configuration parameters and transmit the notch configuration request using the data transmitter;

a receiver that receives a notch configuration request message specifying notch filter parameters; and

the programmed processor being programmed to configure the user configurable notch filter in accordance with the specified notch filter configuration parameters received in the notch filter configuration request message.