Scanning Algorithm for Embedded Network Devices
First Claim
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1. A method for filtering signals in a transmission medium having network signals coexisting with broadcast signals, comprising:
- (a) a filter control module controlling a filter coupled to a tuner, the filter switchably attenuating network and broadcast signals above a first frequency or network and broadcast signals above a second frequency greater than the first frequency;
(b) the filter control module receiving an indication that the tuner will tune to a broadcast signal channel between the first frequency and the second frequency; and
(c) the filter control module controlling the filter to switch to attenuating signals above the second frequency in response to receiving the indication.
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Abstract
A system and method is provided for selective filtering of transmissions based on information received from a tuner. An embedded diplexer in a consumer electronic device allows the device to be used in a variety of different signal environments. For example, a television with an embedded switching filter coupled to the television tuner is operable in environments where television signals are transmitted on frequencies up to 1 GHz and in environments where MoCA signals are transmitted on 1 GHz frequencies.
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Citations
23 Claims
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1. A method for filtering signals in a transmission medium having network signals coexisting with broadcast signals, comprising:
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(a) a filter control module controlling a filter coupled to a tuner, the filter switchably attenuating network and broadcast signals above a first frequency or network and broadcast signals above a second frequency greater than the first frequency; (b) the filter control module receiving an indication that the tuner will tune to a broadcast signal channel between the first frequency and the second frequency; and (c) the filter control module controlling the filter to switch to attenuating signals above the second frequency in response to receiving the indication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for filtering signals in a transmission medium having network signals coexisting with broadcast signals, comprising:
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(a) a filter control module coupled to a tuner; and (b) a filter coupled to and controlled by the filter control module, the filter switchably attenuating network and broadcast signals above a first frequency or signals above a second frequency greater than the first frequency;
wherein,(c) the filter control module is configured to receive an indication that the tuner will tune to a broadcast signal channel between the first frequency and the second frequency; and (d) the filter control module is configured to control the filter to switch to attenuating signals above the second frequency in response to receiving the indication. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A consumer electronic device, comprising:
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(a) a tuner configured to tune to broadcast signal channels; (b) a filter control module coupled to the tuner; and (c) a filter coupled to and controlled by the filter control module, the filter switchably attenuating network and broadcast signals above a first frequency or signals above a second frequency greater than the first frequency;
wherein,(d) the filter control module is configured to receive an indication that the tuner will tune to a broadcast signal channel between the first frequency and the second frequency; and (e) the filter control module is configured to control the filter to switch to attenuating signals above the second frequency in response to receiving the indication. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification