Multi-channel Receiver Filter Management Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Devices processing multiple parallel signal channels face excessive power consumption due to the need for extensive filtering and increased digital signal processing operations, which grows with the number of channels and filter operations.
Innovation Solution
A device with a filter management circuit that dynamically activates and deactivates signal processing circuits and filter operations based on predicted interference, using shared programmable circuits and adaptive filtering to minimize power consumption by skipping unnecessary processing and filtering operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If extensive filtering and digital signal processing operations are performed on multiple parallel channels, then interference from other channels is prevented, but power consumption increases proportionally with the number of channels and filter operations
Solution Approach 1:
The patent applies dynamics by making the filter operations adaptive and conditional rather than static and continuous. The system dynamically activates or deactivates filtering based on detected interference conditions, allowing the processing intensity to vary according to actual needs. This resolves the contradiction by enabling interference prevention only when necessary, rather than continuously consuming power regardless of interference presence.
Solution Approach 2:
The patent changes the parameter of filter operation activation from a constant state to a variable state based on interference detection. By monitoring signal conditions and adjusting filter activation accordingly, the system maintains interference rejection capability when needed while reducing power consumption when interference is absent. This parameter change approach allows the system to adapt processing intensity to actual operational requirements.
2Object-affected harmful factors
If digital signal processing is used to filter multiple channels in parallel or via time division multiplexing, then channel interference is reduced, but the number of processing instructions and power consumption increase with the number of channels
Solution Approach 1:
The patent extracts and processes only the specific channel of interest rather than processing all channels equally. By identifying and isolating the desired channel signal, the system applies filtering operations only where necessary, removing unnecessary processing instructions for other channels. This extraction approach reduces device complexity while maintaining effective interference rejection for the target channel.
Data Source
Figure 1
AI summary
A device processes signals from a plurality of signal channels that are received in parallel. A channel processing circuit (12a,b, 14a,b), applies a series of filtering operations selectively to the signal from a first one of the signal channels. A filter management circuit (18) detects a reception condition from reception of a signal in a second one of the signal channels. The filter management circuit (18) controls application of at least a part of said filtering operations to the signal from the first one the signal channels by the channel processing circuit (12a,b, 14a,b), dependent on the detected reception condition. Selected filter operations may be enabled or disabled. Thus, power consumption may be reduced. In an embodiment, the detected reception condition is determined as a by-product of functional reception of another channel. Thus power consumption for the detection of the reception condition is also reduced. From reception of specific types of channels, for example, it may be detected whether the device is indoors or outdoors and filtering of other channels may be adapted accordingly.