TOTAL BANDWIDTH CONDITIONING DEVICE

• US 20110085586A1
• Filed: 10/09/2009
• Published: 04/14/2011
• Est. Priority Date: 10/09/2009
• Status: Abandoned Application

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Kelma, David, Cox, Tab Kendall
• Application Number:
  US12/576,612
• Publication Number:
  US 20110085586A1
• Time in Patent Office: Days
• US Class Current: 375/219
• CPC Class Codes: H03G 3/30 in amplifiers having semiconductor devices
• CPC Class Codes: H04N 7/10 Adaptations for transmission by electrical cable H04N7/12 takes precedence

Abstract

A device for conditioning a total bandwidth includes a return path extending at least a portion of a distance between a supplier side connector and a user side connector, and a forward path extending at least a portion of a distance between the supplier side connector and the user side connector. An upstream section including a variable signal level adjustment device connected within the return path. A downstream section including a forward coupler connected within the forward path. The device further includes at least one microprocessor. The microprocessor is connected electrically upstream the variable signal level adjustment device. The microprocessor reduces an amount of signal level adjustment applied to the return path in response to a reduction in a level of a downstream bandwidth at the forward coupler.

Claims

1. A device for conditioning a total bandwidth, the device comprising:

a return path extending at least a portion of a distance between a supplier side connector and a user side connector;

a forward path extending at least a portion of a distance between the supplier side connector and the user side connector;

an upstream section comprising a variable signal level adjustment device connected within the return path;

a downstream section comprising a forward coupler connected within the forward path;

at least one microprocessor, the microprocessor being connected electrically upstream the variable signal level adjustment device,

wherein the microprocessor reduces an amount of signal level adjustment applied to the return path in response to a reduction in a level of a downstream bandwidth at the forward coupler.

2. The device of claim 1, wherein the upstream section further comprises:

a return coupler connected within the return path, the coupler providing a secondary path;

a detection circuit connected electrically downstream the return coupler; and

a level detector connected electrically downstream the detection circuit,

wherein the microprocessor is connected electrically downstream the level detector.

3. The device of claim 2, wherein the downstream device further comprises:

a tuner connected to the forward coupler and being tunable based on an input from the microprocessor, the tuner providing a tuner output of a selected channel, the selected channel being at least one of a high frequency channel and a low frequency channel.

4. The device of claim 3, wherein the microprocessor comprises at least one control mode that compares one of the low channel level and the high channel level to a respective goal level.

5. The device of claim 4, wherein the microprocessor comprises a level threshold, a difference between the one of the low channel level and the high channel level and the respective goal level being compared to the level threshold.

6. The device of claim 1, wherein the upstream section and the downstream section utilize their own respective microprocessor, these microprocessors having a communication link there between.

7. The device of claim 1, wherein the upstream section and the downstream section utilize the same microprocessor.

8. A method of conditioning an upstream bandwidth, the method comprising:

adding at least one increment of attenuation to the upstream bandwidth;

measuring a first level of the downstream bandwidth; and

removing at least a portion of the at least one increment of attenuation in response to the first level of the downstream bandwidth.

9. The method of claim 8 further comprising:

measuring a second level of the downstream bandwidth, the second level of the downstream bandwidth being measured an amount of time prior to the measuring of the first level;

comparing the second level of the downstream bandwidth to respective goal level to obtain a second difference;

comparing the first level of the downstream bandwidth to respective goal level to obtain a first difference; and

directing the removal of the portion of the at least one increment of attenuation when the first difference and the second difference vary by a variance greater than a predetermined threshold.

10. The method of claim 9, wherein the predetermined threshold is at least an amount of expected variation, the expected variations including those relating to at least one of cyclical temperatures, humidity, and sunlight.

11. The method of claim 10, wherein the predetermined threshold varies depending on an amount of time between measuring the second level and measuring the first level.

12. The method of claim 8 further comprising:

initiating a first mode, the first mode comprising;

tuning to an initial high frequency channel from a downstream bandwidth;

obtaining a high channel modulation and a high channel level from the initial high frequency channel;

tuning to an initial low frequency channel from the downstream bandwidth;

obtaining a low channel modulation and a low channel level from the initial low frequency channel;

providing an amount of level adjustment of the downstream bandwidth;

providing an amount of slope adjustment of the downstream bandwidth;

initiating a second mode after competing at least one iteration of the first mode steps, the second mode comprising;

obtaining a high channel modulation and a high channel level for each of a plurality of high frequency channels;

obtaining an average of the high channel levels;

obtaining a low channel modulation and a low channel level for each of a plurality of low frequency channels;

obtaining an average of the low channel levels;

providing an amount of level adjustment of the downstream bandwidth;

providing an amount of slope adjustment of the downstream bandwidth.

obtaining a third difference between the average of the high channel levels and an average of respective high channel goal levels;

obtaining a fourth difference between the average of the low channel levels and an average of respective low channel goal levels;

returning to the first mode when at least one of the third difference and the fourth difference exceeds a respective predetermined threshold; and

directing the removal of the portion of the at least one increment of attenuation when returning to the first mode from the second mode.

13. The method of claim 12 further comprising:

providing the microprocessor with an identification for each of the plurality of high frequency channels and each of the plurality of low frequency channels, the identification indicating whether a respective channel is being transmitted from a supplier,

wherein the average of the high channel levels includes the high channel levels for only those high frequency channels identified as being transmitted from the supplier, and

wherein the average of the low channel levels includes the low channel levels for only those low frequency channels identified as being transmitted from the supplier.