18223349. FIR FILTER, FILTERING METHOD BY FIR FILTER, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING CONTROL PROGRAM simplified abstract (NEC Corporation)
FIR FILTER, FILTERING METHOD BY FIR FILTER, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING CONTROL PROGRAM
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FIR FILTER, FILTERING METHOD BY FIR FILTER, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING CONTROL PROGRAM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18223349 titled 'FIR FILTER, FILTERING METHOD BY FIR FILTER, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING CONTROL PROGRAM
Simplified Explanation
The abstract describes an FIR filter with an address signal generation unit and an extraction unit. The address signal generation unit generates an address signal based on k bit values corresponding to k filter coefficients with a symmetric property. The extraction unit retrieves a computation result from a table based on the address value indicated by the address signal.
- Address signal generation unit generates address signal based on k bit values corresponding to k filter coefficients with symmetric property.
- Extraction unit retrieves computation result from table based on address value indicated by address signal.
- Table contains multiple computation results where sets of results indicating the same values among 2 to the power of k patterns are shared.
- Address values are associated with each other in the table.
- Potential Applications
- Digital signal processing
- Image processing
- Audio processing
- Problems Solved
- Efficient filtering of signals
- Simplified computation of filter coefficients
- Benefits
- Improved signal processing accuracy
- Reduced computational complexity
- Enhanced performance in various applications.
Original Abstract Submitted
An FIR filter includes: an address signal generation unit configured to generate an address signal of an address value in accordance with k bit values that correspond to k filter coefficients having a symmetric property; and an extraction unit configured to extract a computation result that corresponds to the address value indicated by the address signal from the table, in which, in the table, a plurality of computation results in which sets of computation results indicating the same values among 2 to the power of k patterns of computation results which are obtained by adding up k results of multiplication, the k results of multiplication being results obtained by multiplying each of k filter coefficients having a symmetric property by each of k bit values that correspond to k filter coefficients are commonly shared, and the plurality of address values are associated with each other.
