Hitachi Video Engineering, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 5237
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 4147
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 3135
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5854879 Method and apparatus for multi-level tone display for liquid crystal apparatusJan 12, 93Dec 29, 98[G09G]
5737632 Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder/decoder circuitFeb 22, 94Apr 07, 98[G08F]
5654757 Focusing apparatus for video camera or the likeMar 01, 95Aug 05, 97[H04N]
5583530 Liquid crystal display method and apparatus capable of making multi-level tone displayFeb 10, 93Dec 10, 96[G09G]
5523991 Data recording/reproducing deviceAug 21, 95Jun 04, 96[G11B]
5519683 Information recording/reproducing device and method in which a resynchronization signal is inserted into the data at predetermined intervalsAug 10, 94May 21, 96[H04N, G11B]
5408332 Focusing apparatus for video camera or the likeFeb 03, 89Apr 18, 95[H04N]
5383171 Information recording/reproducing device and method for recording/reproducing information on a recording medium using accurate synchronization in a data area in which coded data is storedDec 15, 92Jan 17, 95[H04N]
5321567 Tape loading mechanism for a rotating drum and cassette tape recording and reproducing apparatusJun 19, 92Jun 14, 94[G11B]
5309170 Half-tone representation system and controlling apparatus thereforApr 26, 90May 03, 94[G09G]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6578136 Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder circuitExpiredOct 30, 01Jun 10, 03[G06F, G11B]
6311236 Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder circuitExpiredFeb 14, 00Oct 30, 01[G06F, G11B]
6125427 Magnetic disc control apparatus with parallel data transfer between disc control unit and encoder circuitExpiredApr 07, 98Sep 26, 00[G06F, G11B]
5488595 Optical information recording medium having a transitioning three bit access pit group and optical information recording/reproducing apparatus using the sameExpiredSep 21, 93Jan 30, 96[G11B]
5414470 Sync signal generator for generating a second sync signal synchronized with a first sync signalExpiredJan 28, 91May 09, 95[H04N]
5307171 Video tape recorder/playerExpiredJul 24, 90Apr 26, 94[H04N]
5266972 Thermal printer for recording paper in the form of a rollExpiredMar 14, 90Nov 30, 93[B41J]
5253064 Video camera apparatus with electronic zoom control and method thereforExpiredApr 23, 91Oct 12, 93[H04N]
D339123 Video tape recorderExpiredJul 18, 91Sep 07, 93[]
5229986 Data recording/reproducing deviceExpiredSep 26, 90Jul 20, 93[H04N, G11B]
5220314 Liquid crystal display apparatus and method of performing liquid crystal displayExpiredJun 04, 90Jun 15, 93[G09G]
5206635 Method and apparatus for multi-level tone display for liquid crystal apparatusExpiredJan 30, 90Apr 27, 93[G09G]
5181110 Video signal processing circuit capable of enlarging and displaying a pictureExpiredDec 27, 90Jan 19, 93[H04N]
5181116 Television receiver with control of writing and reading of video memoryExpiredMar 07, 90Jan 19, 93[H04N]
5168399 Tape loading mechanism for a rotating drum and cassette tape recording and reproducing apparatusExpiredMay 09, 89Dec 01, 92[G11B]
5146323 Signal processing circuit including a white balance adjusting circuit in a color video printer apparatusExpiredSep 28, 89Sep 08, 92[G03F]
5146509 Method of inspecting defects in circuit pattern and system for carrying out the methodExpiredAug 28, 90Sep 08, 92[G06K]
5138451 Television receiverExpiredAug 10, 89Aug 11, 92[H04N]
5134465 Color detecting circuitExpiredAug 08, 90Jul 28, 92[H04N]
5124854 Cassette loading apparatus having an inner cassette holder supported on an outer cassette holderExpiredApr 17, 90Jun 23, 92[G11B]

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