Inventor · disambiguated record
Naofumi Yanagihara
Also filed as: YANAGIHARA NAOFUMI
84 granted patents·3,111 citations·filing 1990–2007
99Inventor score
Top patents by PatentIndex Score
84 records- 0197US5899578ADigital signal processor, processing method, digital signal recording/playback device and digital signal playback methodSONY CORP·Filed 1996·Granted May 4, 1999·125 cites·6 claims
- 0295US6658157B1Method and apparatus for converting image informationSONY CORP·Filed 2000·Granted Dec 2, 2003·150 cites·19 claims
- 0394US6671319B1Methods and apparatus for motion estimation using neighboring macroblocksSONY CORP·Filed 2000·Granted Dec 30, 2003·75 cites·52 claims
- 0494US6211800B1Data decoding system and method, transfer device and method, and receiving device and methodSONY CORP·Filed 1997·Granted Apr 3, 2001·192 cites·60 claims
- 0593US6483876B1Methods and apparatus for reduction of prediction modes in motion estimationSONY CORP·Filed 2000·Granted Nov 19, 2002·63 cites·12 claims
- 0693US6285824B1Digital signal processor, processing method, digital signal recording/playback device and digital signal playback methodSONY CORP·Filed 1998·Granted Sep 4, 2001·60 cites·47 claims
- 0793US5835668ATransmission, recording and reproduction of digital data and time information in transport packets using a compression ratioSONY CORP·Filed 1995·Granted Nov 10, 1998·110 cites·12 claims
- 0891US6690728B1Methods and apparatus for motion estimation in compressed domainSONY CORP·Filed 2000·Granted Feb 10, 2004·50 cites·44 claims
- 0991US6233393B1Apparatus for transmitting data in isochronous and asynchronous manners, an apparatus for receiving the same, and a system and method for such transmitting and receiving of such dataSONY CORP·Filed 1997·Granted May 15, 2001·142 cites·13 claims
- 1091US5416651AApparatus for magnetically recording digital dataSONY CORP·Filed 1991·Granted May 16, 1995·126 cites·19 claims
- 1191US5321440AHigh efficiency data compressed image encodingSONY CORP·Filed 1992·Granted Jun 14, 1994·107 cites·23 claims
- 1290US7705889B2Shutter time compensationSONY CORP·Filed 2007·Granted Apr 27, 2010·13 cites·18 claims
- 1389US6996176B1Motion estimation process and system using sparse search block-matching and integral protectionSONY ELECTRONICS INC·Filed 2000·Granted Feb 7, 2006·34 cites·2 claims
- 1489US6687296B1Apparatus and method for transforming picture informationSONY CORP·Filed 2000·Granted Feb 3, 2004·46 cites·10 claims
- 1589US6539056B1Picture decoding method and apparatusSONY CORP·Filed 1999·Granted Mar 25, 2003·132 cites·7 claims
- 1689US6172989B1Transmitting apparatus and method, receiving apparatus and methodSONY CORP·Filed 1997·Granted Jan 9, 2001·119 cites·68 claims
- 1789US5832085AMethod and apparatus storing multiple protocol, compressed audio video dataSONY CORP·Filed 1997·Granted Nov 3, 1998·128 cites·17 claims
- 1888US5859949ATransmission, recording and reproduction of digital data and time information in transport packets using a compression ratioSONY CORP·Filed 1997·Granted Jan 12, 1999·72 cites·2 claims
- 1987US6130912AHierarchical motion estimation process and system using block-matching and integral projectionSONY ELECTRONICS INC·Filed 1998·Granted Oct 10, 2000·105 cites·32 claims
- 2086US6128047AMotion estimation process and system using sparse search block-matching and integral projectionSONY CORP·Filed 1998·Granted Oct 3, 2000·82 cites·25 claims
- 2185US7227898B2Digital signal conversion method and digital signal conversion deviceSONY CORP·Filed 2005·Granted Jun 5, 2007·6 cites·1 claims
- 2283US6714592B1Picture information conversion method and apparatusSONY CORP·Filed 2000·Granted Mar 30, 2004·26 cites·8 claims
- 2383US6115531AMethod and apparatus for reproducing/recording at variable speeds dependent upon the bit rate of the MPEG encoded signalSONY CORP·Filed 1997·Granted Sep 5, 2000·39 cites·23 claims
- 2483US5946446ARecording and reproduction of variable-speed playback data using a specific area on each track of a recording mediumSONY CORP·Filed 1997·Granted Aug 31, 1999·75 cites·10 claims
- 2582US5543932ADigital video signal recording apparatus and digital video signal reproducing apparatusSONY CORP·Filed 1994·Granted Aug 6, 1996·55 cites·17 claims
- 2682US5317413ADigital high-definition video signal recording and reproducing apparatusSONY CORP·Filed 1992·Granted May 31, 1994·32 cites·10 claims
- 2779US6532309B1Picture decoding method and apparatusSONY CORP·Filed 1999·Granted Mar 11, 2003·61 cites·8 claims
- 2879US5699475AMethod and apparatus for encoding a digital image signalSONY CORP·Filed 1993·Granted Dec 16, 1997·47 cites·14 claims
- 2976US6028726ADigital data recording/reproducing apparatus and method with means for adding arrival time to a data packetSONY CORP·Filed 1997·Granted Feb 22, 2000·53 cites·26 claims
- 3076US5684917AApparatus and method for recording and reproducing digital video data in a variable-speed modeSONY CORP·Filed 1994·Granted Nov 4, 1997·34 cites·22 claims
- 3176US5557420AMethod and apparatus for recording video signals on a record mediumSONY CORP·Filed 1994·Granted Sep 17, 1996·40 cites·16 claims
- 3275US5557479AApparatus and method for recording and reproducing digital video signal data by dividing the data and encoding it on multiple coding pathsSONY CORP·Filed 1995·Granted Sep 17, 1996·51 cites·13 claims
- 3374US5677734AMethod and apparatus for modifying the quantization step of each macro-block in a video segmentSONY CORP·Filed 1995·Granted Oct 14, 1997·51 cites·8 claims
- 3474US5404168AMethod and apparatus for encoding an image signal using a multi-stage quantizing number determinerSONY CORP·Filed 1993·Granted Apr 4, 1995·35 cites·20 claims
- 3573US7526030B2Digital signal conversion method and digital signal conversion deviceSONY CORP·Filed 2007·Granted Apr 28, 2009·2 cites·1 claims
- 3673US7221709B2Information processing apparatus and method, and program storage mediumSONY CORP·Filed 2005·Granted May 22, 2007·2 cites·1 claims
- 3773US5850501ATransmission recording and reproduction of digital data and time information in transport packets using a compression ratioSONY CORP·Filed 1997·Granted Dec 15, 1998·29 cites·4 claims
- 3873US5581360AMethods and systems for dubbing a variable-length encoded digital video signal on a record mediumSONY CORP·Filed 1993·Granted Dec 3, 1996·20 cites·22 claims
- 3972US5845043ATransmission recording and reproduction of digital data and time information in transport packets using a compression ratioSONY CORP·Filed 1997·Granted Dec 1, 1998·15 cites·5 claims
- 4070US6442330B2Digital signal processor, processing method, digital signal recording/playback device and digital signal playback methodSONY CORP·Filed 2001·Granted Aug 27, 2002·5 cites·42 claims
- 4170US5347310AApparatus for compression encoding video signalsSONY CORP·Filed 1992·Granted Sep 13, 1994·29 cites·18 claims
- 4265US6697432B2Processing of packets in MPEG encoded transport streams using additional data attached to each packetSONY CORP·Filed 1997·Granted Feb 24, 2004·28 cites·18 claims
- 4364US6963606B1Digital signal conversion method and digital signal conversion deviceSONY CORP·Filed 1998·Granted Nov 8, 2005·19 cites·14 claims
- 4464US5095394ATracking method for digital signal reproducing apparatusSONY CORP·Filed 1990·Granted Mar 10, 1992·14 cites·28 claims
- 4562US5845042ATransmission recording and reproduction of digital data and time information in transport packets using a compression ratioSONY CORP·Filed 1997·Granted Dec 1, 1998·10 cites·10 claims
- 4661US6438319B1Recording digital video signals and redundancy signals for error correctionSONY ELECTRONICS INC·Filed 1997·Granted Aug 20, 2002·25 cites·46 claims
- 4760US5712946ARecording/reproducing video signals with a plurality of playback speedsSONY CORP·Filed 1995·Granted Jan 27, 1998·24 cites·10 claims
- 4859US6748018B2Picture decoding method and apparatusSONY CORP·Filed 1999·Granted Jun 8, 2004·23 cites·4 claims
- 4958US5459617AApparatus and methods for recording information signals and tracking signals on magnetic tapeSONY CORP·Filed 1993·Granted Oct 17, 1995·11 cites·11 claims
- 5057US5233488AMethod and apparatus for detecting tracking errorsSONY CORP·Filed 1991·Granted Aug 3, 1993·11 cites·25 claims
Showing the top 50 of 84 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →