Inventor · disambiguated record
Jenn-Tsair Tsai
Also filed as: TSAI JENN-TSAIR
75 granted patents·3 pending applications·848 citations·filing 1996–2007
99Inventor score
Files withMUSTEK SYSTEMS INC55MUSTEK SYSTEM INC7MUST SYSTEMS INC4TSAI JENN-TSAIR4MUSKEK SYSTEMS INC1
Top patents by PatentIndex Score
78 records- 0194US6678075B1Slide securing device for flatbed scanning systemMUSTEK SYSTEMS INC·Filed 2000·Granted Jan 13, 2004·92 cites·10 claims
- 0280US6721072B1Apparatus for scanning documents in front of a document plateMUSTEK SYSTEMS INC·Filed 2000·Granted Apr 13, 2004·19 cites·5 claims
- 0378US6450475B1Platform adjustment device for scannerMUSTEK SYSTEMS INC·Filed 2000·Granted Sep 17, 2002·20 cites·6 claims
- 0478US6353486B1Device for improving scanning quality of image scannerMUSTEK SYSTEMS INC·Filed 2000·Granted Mar 5, 2002·16 cites·9 claims
- 0577US6809842B1Apparatus for scanning documentMUSTEK SYSTEMS INC·Filed 2000·Granted Oct 26, 2004·19 cites·10 claims
- 0677US6707583B1Image scanner using low-pixel-density CCD to achieve high-pixel-density scanning quality by pixel-level shift of CCDMUSTEK SYSTEMS INC·Filed 2000·Granted Mar 16, 2004·16 cites·14 claims
- 0773US5999277AImage information reading apparatus having rolling elements interposed between a sheet table and a contact-type sensorMUSTEK SYSTEMS INC·Filed 1997·Granted Dec 7, 1999·42 cites·9 claims
- 0869USRE42823ESlide securing device for flatbed scanning sysemTRANSPACIFIC OPTICS LLC·Filed 2006·Granted Oct 11, 2011·3 cites·40 claims
- 0968US6178015B1Apparatus and method for increasing the scan accuracy and quality of the flatbed scanner by using close loop controlMUSTEK SYSTEMS INC·Filed 1998·Granted Jan 23, 2001·35 cites·9 claims
- 1066US6229629B1Device and method for quick and precise determination of scan start point for image scannerMUSTEK SYSTEMS INC·Filed 1998·Granted May 8, 2001·31 cites·30 claims
- 1166US6144467ADevice and method for improving scanning quality of image scannerMUSTEK SYSTEMS INC·Filed 1998·Granted Nov 7, 2000·31 cites·20 claims
- 1265US5900951AContact image sensor image reading apparatusMUSTEK SYSTEMS INC·Filed 1997·Granted May 4, 1999·29 cites·18 claims
- 1361US6163388AApparatus and method for automatic scanningMUSTEK SYSTEMS INC·Filed 1997·Granted Dec 19, 2000·26 cites·6 claims
- 1461US5719404AMethod and apparatus for calibrating the horizontal starting point of a document on a flatbed scannerMUST SYSTEMS INC·Filed 1996·Granted Feb 17, 1998·26 cites·2 claims
- 1560US6222934B1Test chart for determining the image quality of an optical scannerMUSTEK SYSTEMS INC·Filed 1998·Granted Apr 24, 2001·23 cites·10 claims
- 1656US6879412B1Method for optimizing the best resolution of an optical scanning system and apparatus for the sameMUSTEK SYSTEMS INC·Filed 2000·Granted Apr 12, 2005·4 cites·9 claims
- 1756US6603514B1Focus controlling method and system by evaluating a resolution indexMUSTEK SYSTEMS INC·Filed 1999·Granted Aug 5, 2003·19 cites·22 claims
- 1856US6392762B1Device for quick and precise determination of scan start point for image scannerMUSTEK SYSTEMS INC·Filed 1999·Granted May 21, 2002·19 cites·19 claims
- 1954US6381043B1Device used in image scanner for quickly and precisely determining scan start point and improving scanning qualityMUSTEK SYSTEMS INC·Filed 1999·Granted Apr 30, 2002·18 cites·25 claims
- 2053US6005685ATransmission mechanism for a contact-type image scannerMUSTEK SYSTEMS INC·Filed 1997·Granted Dec 21, 1999·16 cites·10 claims
- 2152US5942746AMulti-lenses optical deviceMUSTEK SYSTEMS INC·Filed 1998·Granted Aug 24, 1999·15 cites·14 claims
- 2251US6188801B1Method and apparatus for automatic image calibration for an optical scannerFiled 1998·Granted Feb 13, 2001·16 cites·12 claims
- 2351US5822052AMethod and apparatus for compensating illuminance error of a light sourceNUSTEK SYSTEMS INC·Filed 1996·Granted Oct 13, 1998·18 cites·16 claims
- 2449USRE40974EApparatus for scanning documents in front of a document plateTSAI JENN-TSAIR·Filed 2006·Granted Nov 17, 2009·0 cites·37 claims
- 2549US6611292B1Focus controlling method and system for an image capturing systemMUSTEK SYSTEMS INC·Filed 1999·Granted Aug 26, 2003·13 cites·12 claims
- 2649US6557762B1Method for increasing depth of scanning field of a scanning deviceMUSTEK SYSTEMS INC·Filed 2000·Granted May 6, 2003·2 cites·9 claims
- 2749US6157467ACCD rotary-alignment device for optical scannerMUSTEK SYSTEM INC·Filed 1998·Granted Dec 5, 2000·13 cites·5 claims
- 2848US5953169ARotary drum type optical filter apparatusMUSTEK SYSTEM INC·Filed 1997·Granted Sep 14, 1999·13 cites·18 claims
- 2948US5861622AHandy scanner having scanning path straightness-maintaining mechanismMUSTEK SYSTEMS INC·Filed 1997·Granted Jan 19, 1999·11 cites·9 claims
- 3048US5822087AApparatus having a rotatable arm for providing light source for a transparent sheet and a reflective sheetMUSTEK SYSTEMS INC·Filed 1996·Granted Oct 13, 1998·12 cites·10 claims
- 3148US5734477AOptical device having multilensesMUST SYSTEM INC·Filed 1996·Granted Mar 31, 1998·13 cites·8 claims
- 3247USRE43087EImage scanner using low-pixel-density CCD to achieve high-pixel-density scanning quality by pixel-level shift of CCDTSAI JENN-TSAIR·Filed 2006·Granted Jan 10, 2012·0 cites·26 claims
- 3347USRE41567EMethod for optimizing the best resolution of an optical scanning system and apparatus for the sameTSAI JENN-TSAIR·Filed 2007·Granted Aug 24, 2010·0 cites·27 claims
- 3447US5816969ADriving apparatus for a flatbed scannerMUSKEK SYSTEMS INC·Filed 1996·Granted Oct 6, 1998·12 cites·5 claims
- 3546US6637897B2Securing device for transparent documents in a flatbed scanning systemMUSTEK SYSTEMS INC·Filed 2002·Granted Oct 28, 2003·6 cites·9 claims
- 3646US5780829AFlat-plate scanner having a beam-splitting prism/mirror and two light emitting sourcesMUSTEK SYSTEMS INC·Filed 1997·Granted Jul 14, 1998·17 cites·4 claims
- 3743US6236472B1Flatbed scanners with single dynamic sourceMUSTEK SYSTEMS INC·Filed 1998·Granted May 22, 2001·9 cites·15 claims
- 3842US6456327B1Multi-lenses optical deviceMUSTEK SYSTEMS INC·Filed 1998·Granted Sep 24, 2002·8 cites·15 claims
- 3942US6295143B1Apparatus and method of detecting a scanning range when applying assistant frames for flatbed scannersMUSTEK SYSTEMS INC·Filed 1998·Granted Sep 25, 2001·11 cites·12 claims
- 4042US5895914AScanner capable of scanning penetrative document and reflective document with single lampMUSKTEK SYSTEMS INC·Filed 1997·Granted Apr 20, 1999·11 cites·5 claims
- 4142US5677777AApparatus for scanning an original sheet by means of reflective light and transmitted lightMUST SYSTEMS INC·Filed 1996·Granted Oct 14, 1997·8 cites·20 claims
- 4242US2003086143A1Scanner photoelectric module with adjustable lens and charge-coupling deviceMUSTEK SYSTEMS INC·Filed 2002·Application pending·0 cites
- 4341US6486978B1Image-scanning module for downsizing image-scanning devicesMUSTEK SYSTEMS INC·Filed 1999·Granted Nov 26, 2002·7 cites·5 claims
- 4441US5936239ALens holder for a scanner system with one supporting point and one pressing pointMUSTEK SYSTEMS INC·Filed 1997·Granted Aug 10, 1999·12 cites·13 claims
- 4540USRE41038ESecuring device for transparent documents in a flatbed scanning systemTSAI JENN-TSAIR·Filed 2005·Granted Dec 15, 2009·1 cites·23 claims
- 4640US6376835B1Scanner module with adjustable magnification ratioMUSTEK SYSTEMS INC·Filed 1999·Granted Apr 23, 2002·6 cites·8 claims
- 4740US6278808B1Method and apparatus for obtaining relative and absolute modifying factors for image scanning apparatusMUSTEK SYSTEMS INC·Filed 1999·Granted Aug 21, 2001·7 cites·22 claims
- 4840US5864133ACost-effective optical deviceMUSTEK SYSTEM INC·Filed 1997·Granted Jan 26, 1999·7 cites·9 claims
- 4940US5845180AApparatus having a simplified driving device for scanning an original sheetMUSTEK SYSTEMS INC·Filed 1997·Granted Dec 1, 1998·7 cites·16 claims
- 5039US6728011B1Method of adjusting scanner module and device thereofMUSTEK SYSTEMS INC·Filed 1999·Granted Apr 27, 2004·6 cites·9 claims
Showing the top 50 of 78 patent records by PatentIndex Score.
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