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DIGITAL VOICE SYSTEMS INC

Overview
  • Total Patents
    86
  • GoodIP Patent Rank
    214,498
About

DIGITAL VOICE SYSTEMS INC has a total of 86 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets computer technology, basic communication technologies and digital networks are ZOPF ROBERT W, KOVESI BALAZS and MORII TOSHIYUKI.

Patent filings per year

Chart showing DIGITAL VOICE SYSTEMS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hardwick John C 64
#2 Lim Jae S 36
#3 Griffin Daniel W 12
#4 Griffin Daniel Wayne 9
#5 Hardwick John Clark 5
#6 Kottenstette Nicholas 2
#7 Danieru Uein Gurifuin 2
#8 Green David T 1
#9 Jie Esu Rimu 1
#10 Jiyon Shii Haadouitsuku 1

Latest patents

Publication Filing date Title
US2020111500A1 Audio watermarking via correlation modification
US2015340045A1 Audio watermarking via phase modification
US2008154614A1 Estimation of pulsed speech model parameters
US2005278169A1 Half-rate vocoder
US7634399B2 Voice transcoder
EP1329877A2 Speech synthesis
US2004093206A1 Interoperable vocoder
US6912495B2 Speech model and analysis, synthesis, and quantization methods
AU8055901A Isolating and reducing noise generated by mechanical data storage devices
US6675148B2 Lossless audio coder
US6377916B1 Multiband harmonic transform coder
US6199037B1 Joint quantization of speech subframe voicing metrics and fundamental frequencies
US6161089A Multi-subframe quantization of spectral parameters
US6131084A Dual subframe quantization of spectral magnitudes
AU4085396A Estimation of excitation parameters
US5701390A Synthesis of MBE-based coded speech using regenerated phase information
US5754974A Spectral magnitude representation for multi-band excitation speech coders
US5630011A Quantization of harmonic amplitudes representing speech
US5664051A Method and apparatus for phase synthesis for speech processing
US5715365A Estimation of excitation parameters