Upstream bandwidth conditioning device
First Claim
1. An upstream bandwidth conditioning device that can be inserted into a signal transmission line of a CATV system in or proximate to a premise of a user, said device comprising:
- a return path and a forward path created between a supplier side diplexer and a premise side diplexer, the return path including an upstream bandwidth transmission path;
a signal amplification device configured to amplify a desirable signal through the upstream bandwidth transmission path, the signal amplification device located within the return path and external to the forward path;
a tunable low pass filter within the return path and external to the forward path;
a tunable high pass filter within the return path and external to the forward path, and connected in series with the tunable low pass filter, wherein the tunable low pass filter in combination with the tunable high pass filter is connected between the supplier side diplexer and the signal amplification device so as to prevent amplification of undesirable interference signals on the return path; and
at least one voltage control unit configured to adjust each of the tunable low pass filter and the tunable high pass filter between at least a first intermediate frequency range, of an upstream bandwidth, having a first width including a first position and a second intermediate frequency range, of the upstream bandwidth, having a second width including a second position, the first width differing in size from the second width, the first position differing from the second position, wherein the at least one voltage control unit is connected to the tunable low pass filter and the tunable high pass filter.
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Accused Products
Abstract
An upstream bandwidth conditioning device is provided that can be inserted into a signal transmission line of a CATV system on a premise of a user. The device includes a tunable low pass filter, a tunable high pass filter connected in series with the tunable low pass filter, and at least one voltage control unit. The voltage control unit is configured to adjust each of the tunable low pass filter and the tunable high pass filter between at least a first intermediate frequency range having a first width and a second intermediate frequency range having a second width. The first width differs in size from the second width.
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Citations
23 Claims
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1. An upstream bandwidth conditioning device that can be inserted into a signal transmission line of a CATV system in or proximate to a premise of a user, said device comprising:
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a return path and a forward path created between a supplier side diplexer and a premise side diplexer, the return path including an upstream bandwidth transmission path; a signal amplification device configured to amplify a desirable signal through the upstream bandwidth transmission path, the signal amplification device located within the return path and external to the forward path; a tunable low pass filter within the return path and external to the forward path; a tunable high pass filter within the return path and external to the forward path, and connected in series with the tunable low pass filter, wherein the tunable low pass filter in combination with the tunable high pass filter is connected between the supplier side diplexer and the signal amplification device so as to prevent amplification of undesirable interference signals on the return path; and at least one voltage control unit configured to adjust each of the tunable low pass filter and the tunable high pass filter between at least a first intermediate frequency range, of an upstream bandwidth, having a first width including a first position and a second intermediate frequency range, of the upstream bandwidth, having a second width including a second position, the first width differing in size from the second width, the first position differing from the second position, wherein the at least one voltage control unit is connected to the tunable low pass filter and the tunable high pass filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of conditioning an upstream bandwidth that is created in a premise of a user using a device located in or proximate to the premise of the user, the method comprising:
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providing the device with a return path and a forward path between a supplier side diplexer and a premise side diplexer, the return path including an upstream bandwidth transmission path; providing the device with a signal amplification device within the return path and external to the forward path; amplifying, by the signal amplification device, a desirable signal through the upstream bandwidth transmission path; providing the device with a tunable low pass filter within the return path and external to the forward path; providing the device with a tunable high pass filter within the return path, external to the forward path, and connected in series with the tunable low pass filter, wherein the tunable low pass filter in combination with the tunable high pass filter is connected between the supplier side diplexer and the signal amplification device so as to prevent amplification of undesirable interference signals on the return path; providing the device with at least one voltage control unit; adjusting, by the at least one voltage control unit in response to instructions from a controller device, each of the tunable low pass filter and the tunable high pass filter between a first intermediate frequency range having a first width including a first position and a second intermediate frequency range having a second width including a second position, the first width differing in size from the second width, the first position differing from the second position, wherein the at least one voltage control unit is connected to the tunable low pass filter and the tunable high pass filter. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification