Inventor · disambiguated record
Mutsumi Ohta
Also filed as: OHTA MUTSUMI
21 granted patents·1,067 citations·filing 1987–2003
97Inventor score
Top patents by PatentIndex Score
21 records- 0196US6415041B1Digital watermark insertion system and digital watermark characteristic table creating deviceNEC CORP·Filed 1999·Granted Jul 2, 2002·213 cites·11 claims
- 0295US4931879AImage processing system for recording or reproducing an image signal sequence which has been encoded by employing two predictive coding methods and combining the results of those methodsNEC CORP·Filed 1988·Granted Jun 5, 1990·131 cites·11 claims
- 0393US4837618AMoving image signal coding systemKOKUSAI DENSHIN DENWA CO LTD·Filed 1987·Granted Jun 6, 1989·128 cites·8 claims
- 0492US6880082B2Broadcast verification system, broadcast verification method, broadcast verification apparatus and storage medium storing broadcast verification programNEC CORP·Filed 2001·Granted Apr 12, 2005·57 cites·34 claims
- 0592US4734767AEncoder capable of faithfully and adaptively encoding a moving imageKOKUSAI DENSHIN DENWA CO LTD·Filed 1987·Granted Mar 29, 1988·86 cites·13 claims
- 0691US6470090B2Digital watermark insertion system and digital watermark characteristic table creating deviceNEC CORP·Filed 2002·Granted Oct 22, 2002·56 cites·5 claims
- 0782US4942465AMethod of coding a digital video signal for reverse reproduction of picturesNEC CORP·Filed 1989·Granted Jul 17, 1990·41 cites·4 claims
- 0879US5396237ADevice for subband coding with samples scanned across frequency bandsNEC CORP·Filed 1994·Granted Mar 7, 1995·57 cites·12 claims
- 0979US4908862AEncoding system capable of accomplishing a high efficiency by anterior and/or posterior processing to quantizationKOKUSAI DENSHIN DENWA CO LTD·Filed 1987·Granted Mar 13, 1990·36 cites·10 claims
- 1074US4942476ARecording system for recording on a ROM image signal information which has been subjected to efficient redundancy codingNEC CORP·Filed 1988·Granted Jul 17, 1990·28 cites·4 claims
- 1173US5355378APredictive coding device capable of coding image data signals without a discontinuity among blocksNEC CORP·Filed 1992·Granted Oct 11, 1994·38 cites·6 claims
- 1271US7339706B2Error diffusion processing circuit for an image signal which improves an output imagePIONEER CORP·Filed 2003·Granted Mar 4, 2008·10 cites·20 claims
- 1371US5469517AMotion compensation circuitNEC CORP·Filed 1994·Granted Nov 21, 1995·23 cites·10 claims
- 1470US5790441ALossless transform coding system for digital signalsNEC CORP·Filed 1996·Granted Aug 4, 1998·42 cites·6 claims
- 1570US5703799ALossless transform coding system for digital signalsNEC CORP·Filed 1996·Granted Dec 30, 1997·46 cites·3 claims
- 1663US4969039AImage processing system operable in cooperation with a recording mediumNEC CORP·Filed 1988·Granted Nov 6, 1990·20 cites·9 claims
- 1758US5999957ALossless transform coding system for digital signalsNEC CORP·Filed 1997·Granted Dec 7, 1999·24 cites·14 claims
- 1855US4987490ADecoding device capable of forwardly and backwardly reproducing pictures with a high qualityNEC CORP·Filed 1990·Granted Jan 22, 1991·16 cites·10 claims
- 1943US5719627ASystem and method for motion compensation on sub-band represented signals of motion pictureNEC CORP·Filed 1996·Granted Feb 17, 1998·9 cites·5 claims
- 2040US4985782AReproduction system capable of reproducing a still image by interrupting a sequence of recorded signalsNEC CORP·Filed 1988·Granted Jan 15, 1991·6 cites·4 claims
- 2130US6175661B1Lossless transform coding system for digital signalsNEC CORP·Filed 1998·Granted Jan 16, 2001·0 cites·2 claims
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