Hitachi Denshi Kabushiki Kaisha

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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 24218
 
  
 
H04B TRANSMISSION 6204
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 4194
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 3156
 
  
 
H03K PULSE TECHNIQUE 3128
 
  
 
H04H BROADCAST COMMUNICATION 352
 
  
 
H04K SECRET COMMUNICATION; JAMMING OF COMMUNICATION355
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 3282
 
  
 
H04Q SELECTING 3107
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 2136

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7020116 Method and apparatus of data transmissionSep 29, 00Mar 28, 06[H04Q]
6983420 Motion picture information displaying method and apparatusMar 02, 00Jan 03, 06[H04N]
6597676 CDMA communication system and methodApr 18, 00Jul 22, 03[H04B]
6577807 Editing method and apparatus for moving picturesJul 06, 99Jun 10, 03[H04N]
6563534 High definition television camera apparatus for correcting a characteristic value of a video signalMar 26, 98May 13, 03[H04N]
6560400 Video information editing method and system, and recording medium having the editing method storedJul 09, 98May 06, 03[H04N, G11B]
6546115 Method of updating reference background image, method of detecting entering objects and system for detecting entering objects using the methodsSep 09, 99Apr 08, 03[G06K]
6526215 Apparatus for editing moving picture having a related information thereof, a method of the same and recording medium for storing procedures in the same methodNov 10, 98Feb 25, 03[H04N, G09G]
6512798 Digital communication system of orthogonal modulation typeMar 05, 99Jan 28, 03[H04L, H03K, H03H]
6487360 METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR EDITING MOVING IMAGE AND DISPLAYING SELECTED GROUPS OF REPRESENTATIVE IMAGES OF CUTS OF THE MOVING IMAGE SUCH THAT REPRESENTATIVE IMAGES HAVING A PREDETERMINED FEATURE CAN BE DISTINGUISHED FROM REPRESENTATIVE IMAGES NOT HAVING THE PREDETERMINED FEATUREAug 26, 98Nov 26, 02[H04N, G11B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7545777 CDMA communication system and methodExpiredJun 09, 03Jun 09, 09[H04B]
6900838 Method of processing image signal from solid-state imaging device, image signal processing apparatus, image signal generating apparatus and computer program product for image signal processing methodExpiredSep 28, 00May 31, 05[H04N, G06K]
6813326 Data transmission system, data transmission communication station, and data transmission methodExpiredSep 10, 99Nov 02, 04[H04L]
6754367 Method and apparatus for automatically detecting intrusion object into view of image pickup deviceExpiredSep 28, 00Jun 22, 04[G06K]
6747694 Television signal processor for generating video signal of wide dynamic range, television camera using the same, and method for television signal processingExpiredJun 06, 00Jun 08, 04[H04N]
6693956 Power amplifier having negative feedback circuit for transmitterExpiredSep 29, 00Feb 17, 04[H04L]
6687386 Object tracking method and object tracking apparatusExpiredJun 13, 00Feb 03, 04[G06K]
6611493 Communication, transmission and receiving method and apparatus using orthogonal frequency division multiplexing modulation systemExpiredJan 26, 99Aug 26, 03[H04L]
6590871 Multi-carrier modulation apparatus and transmitter using the sameExpiredJun 25, 99Jul 08, 03[H04B, H04J]
6473466 Data transmitting method and data transmitting apparatus accompanied with a plurality of transmitting of receiving antennasExpiredDec 07, 98Oct 29, 02[H04B]
6466260 Traffic surveillance systemExpiredNov 12, 98Oct 15, 02[H04N]
6459759 X-ray tomography apparatus and method of taking tomographic image of object with the apparatusExpiredMar 14, 00Oct 01, 02[G01N]
6381236 Bi-directional digital transmission system and bi-directional digital transmission methodExpiredJan 26, 99Apr 30, 02[H04J]
6381251 Data transmission apparatus and receiving apparatus using orthogonal frequency division multiplex modulation systemExpiredJun 11, 98Apr 30, 02[H04J]
6346761 Surface acoustic wave device capable of suppressing spurious response due to non-harmonic higher-order modesExpiredJan 27, 00Feb 12, 02[H01L]
6345390 Bidirectional digital signal transmission system and repeater for the sameExpiredJun 17, 97Feb 05, 02[H04L, H04N, H04J]
6278497 Moving picture processing method and apparatus, and computer program product having processing procedure recorded thereforeExpiredJan 26, 99Aug 21, 01[H04N, G11B]
6259704 Digital transmission networkExpiredApr 23, 97Jul 10, 01[H04L]
6111649 Thickness measuring apparatus using light from slitExpiredOct 12, 99Aug 29, 00[G01B]
6038249 Spectrum spread transmission method and apparatusExpiredMar 18, 97Mar 14, 00[H04L, H04B, H04K]

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