Inventor
DUTTWEILER DONALD L
US16 patents
⚠️ This page may combine multiple inventors who share the name “DUTTWEILER DONALD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T BELL LAB
9 patentsUS5025258AJun 18, 1991
Adaptive probability estimator for entropy encoding/decoding
AT & T BELL LAB105 citations96
US5023611AJun 11, 1991
Entropy encoder/decoder including a context extractor
AT & T BELL LAB118 citations94
US4591669AMay 27, 1986
Adaptive filter update gain normalization
AT & T BELL LAB39 citations92
US4562312ADec 31, 1985
Subsampling delay estimator for an echo canceler
AT & T BELL LAB31 citations92
US5031053AJul 9, 1991
Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing pixel clusters
AT & T BELL LAB27 citations91
US4979049ADec 18, 1990
Efficient encoding/decoding in the decomposition and recomposition of a high resolution image utilizing its low resolution replica
AT & T BELL LAB35 citations91
US4973961ANov 27, 1990
Method and apparatus for carry-over control in arithmetic entropy coding
AT & T BELL LAB86 citations91
US4491701AJan 1, 1985
Adaptive filter including a far end energy discriminator
AT & T BELL LAB25 citations80
US4468641AAug 28, 1984
Adaptive filter update normalization
AT & T BELL LAB9 citations68
BELL TELEPHONE LABOR INC
3 patentsUS4243959AJan 6, 1981
Adaptive filter with tap coefficient leakage
BELL TELEPHONE LABOR INC30 citations92
US4129753ADec 12, 1978
Echo canceller using feedback to improve speech detector performance
BELL TELEPHONE LABOR INC30 citations82
US4189715AFeb 19, 1980
μ-Law to floating point converter
BELL TELEPHONE LABOR INC14 citations73