Inventor

Yasuji Ohta

Inventor

Kawasaki, JP

Overview

1991–1999

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G10Lprimary

G10LSpeech analysis techniques or speech synthesis63%

G06TImage data processing or generation, in general16%

H03MCoding16%

H04LTransmission of digital information, e.g. telegraphic communication5%

PatentTitleYear

5,864,650'Speech encoding method and apparatus using tree-structure delta code book'1999 5,828,811'Speech signal coding system wherein non-periodic component feedback to periodic excitation signal source is adaptively reduced'1998 5,323,486'Speech coding system having codebook storing differential vectors between each two adjoining code vectors'1994 5,263,119'Gain-shape vector quantization method and apparatus'1993 5,261,027'Code excited linear prediction speech coding system'1993 5,231,692'Pitch period searching method and circuit for speech codec'1993 5,224,167'Speech coding apparatus using multimode coding'1993 5,199,076'Speech coding and decoding system'1993 5,151,968'Vector quantization encoder and vector quantization decoder'1992 5,115,469'Speech encoding/decoding apparatus having selected encoders'1992 5,086,471'Gain-shape vector quantization apparatus'1992 5,003,604'Voice coding apparatus'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1999Patents assigned to FUJITSU LTD (12)· patent assignee history

1991–1999Based in Kawasaki, JP· patent location history

1992–1993Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJITSU LTD	12	1991–1999

Locations

Location	Patents	Span
Kawasaki, JP	6	1991–1999
Yokohama, JP	6	1992–1993