Assignee
DATATAPE INC
US43 patents
Top patents by PatentIndex Score
US4984108AJan 8, 1991
Apparatus for transporting magnetic tape cassettes of different sizes
DATATAPE INC45 citations91
US4891720AJan 2, 1990
Belt drive system for a magnetic tape cassette transport/accessor
DATATAPE INC25 citations91
US4989110AJan 29, 1991
Full radius carrier to drum contact in a rotary head scanner
DATATAPE INC82 citations89
US4772963ASep 20, 1988
Duplicate digital date recording apparatus for enhancing bit error rate performance of a data storage medium
DATATAPE INC33 citations84
US4933959AJun 12, 1990
Tracking bit synchronizer
DATATAPE INC26 citations80
US5163070ANov 10, 1992
Digital data synchronizer
DATATAPE INC21 citations76
US5307971AMay 3, 1994
Tape keeper for tape transport elements
DATATAPE INC6 citations74
US5003424AMar 26, 1991
Apparatus for changing the helix angle of magnetic tape relative to a rotary head scanner
DATATAPE INC10 citations74
US5003417AMar 26, 1991
Spring dampener assembly for a sprocket driven belt drive system
DATATAPE INC14 citations74
US4991041AFeb 5, 1991
Apparatus for moving a cassette between storage and receiving locations
DATATAPE INC14 citations74
US4967290AOct 30, 1990
Multiple channel rotary magnetic head scanner having stackable electro-optical signal transmission modules
DATATAPE INC9 citations74
US4947069AAug 7, 1990
Low power magnetic tape reel motor and brake assembly
DATATAPE INC7 citations74
US4779150AOct 18, 1988
Pneumatically controlled tape-loading tape-transporting apparatus
DATATAPE INC11 citations74
US4772969ASep 20, 1988
"Expandable loop" method of and apparatus for automatically threading a web material
DATATAPE INC11 citations74
US4763210AAug 9, 1988
Helical scan tape guide apparatus
DATATAPE INC15 citations74
US4991038AFeb 5, 1991
Automatic threading of a web using a flexible threading band
DATATAPE INC12 citations73
US4819096AApr 4, 1989
Rotary head scanner including anamorphic beam-shaping apparatus in an optical signal-transmission channel
DATATAPE INC9 citations72
US5341134AAug 23, 1994
Simple coding scheme for DC free channel codes of form M/N, where M=N-1 and M and N are positive integers
DATATAPE INC16 citations71
US4826097AMay 2, 1989
Reel spindle apparatus with internal clamping member
DATATAPE INC14 citations71
US4654837AMar 31, 1987
Magneto-optic transducer with enhanced signal performance
DATATAPE INC13 citations71
US4609961ASep 2, 1986
Faraday-effect magneto-optic transducer
DATATAPE INC9 citations71
US5325246AJun 28, 1994
Automatic tracking method for helical scan magnetic tape recorder using reproduced timing signal to sample two out-of-phase reference signals
DATATAPE INC11 citations70
US4891716AJan 2, 1990
Autocalibration of a data signal channel through simultaneous control signals
DATATAPE INC9 citations68
US5321566AJun 14, 1994
Magnetic tape threading and transport apparatus including a sensor for controlling air bearing block movement
DATATAPE INC10 citations66
US5164868ANov 17, 1992
Magnetic tape threading and compliance element guiding apparatus
DATATAPE INC7 citations66
US5044574ASep 3, 1991
Reel hub latch assembly
DATATAPE INC2 citations63
US4964557AOct 23, 1990
Bidirectional web guiding system
DATATAPE INC12 citations63
US4592522AJun 3, 1986
Coaxial reel assembly apparatus
DATATAPE INC4 citations63
US4442963AApr 17, 1984
Tape advancing method and apparatus with fast tape advance mode
DATATAPE INC3 citations63
US5243477ASep 7, 1993
Apparatus for threading magnetic tape from a single reel cartridge in a rotary head tape transport
DATATAPE INC4 citations62
US4984107AJan 8, 1991
Apparatus for transporting a magnetic tape cassette
DATATAPE INC5 citations60
US4958248ASep 18, 1990
Reflective tachometer/headwheel assembly for a rotary head scanner
DATATAPE INC4 citations60
US4677502AJun 30, 1987
Turnaround tape transport apparatus with compensation for head-to-tape stick-slip action
DATATAPE INC2 citations60
US4594699AJun 10, 1986
Faraday-effect magneto-optic transducer apparatus of a rotary form
DATATAPE INC4 citations60
US4647999AMar 3, 1987
Frame for positioning transducing head
DATATAPE INC7 citations58
US4891719AJan 2, 1990
Fast closure method for a data signal channel
DATATAPE INC3 citations57
US5289323AFeb 22, 1994
Autotracking for a helical scan magnetic tape recorder
DATATAPE INC2 citations56
US4587581AMay 6, 1986
Magnetic tape tracking control apparatus
DATATAPE INC3 citations56
US5276559AJan 4, 1994
Technique for recording and reproducing low rate data in a helical vehicle scan recorder having a stationary time code signal reproduce magnetic head
DATATAPE INC5 citations55
US5327307AJul 5, 1994
Magnetic tape cassette recorder having a slidably and tiltably mounted cassette holder and a latch interlock mechanism
DATATAPE INC4 citations53
US4995570AFeb 26, 1991
Reel brake assembly actuated by linear stepper motor
DATATAPE INC1 citations49
US4857825AAug 15, 1989
Voltage controlled resistor
DATATAPE INC1 citations47
US5184258AFeb 2, 1993
Helical scan magnetic tape recorder with capstan assisted vacuum threading
DATATAPE INC0 citations35