Assignee
HITACHI ELECTRONICS
159 granted patents·5,362 citations·filing 1973–2000
Top patents by PatentIndex Score
159 records- 0197US6154601AMethod for editing image information with aid of computer and editing systemHITACHI ELECTRONICS·Filed 1997·Granted Nov 28, 2000·261 cites·13 claims
- 0297US5203028AAutomatic adjustment radio apparatusHITACHI ELECTRONICS·Filed 1990·Granted Apr 13, 1993·242 cites·2 claims
- 0396US6687386B1Object tracking method and object tracking apparatusHITACHI ELECTRONICS·Filed 2000·Granted Feb 3, 2004·194 cites·16 claims
- 0496US6526215B2Apparatus for editing moving picture having a related information thereof, a method of the same and recording medium for storing procedures in the same methodHITACHI ELECTRONICS·Filed 1998·Granted Feb 25, 2003·123 cites·33 claims
- 0594US6983420B1Motion picture information displaying method and apparatusHITACHI ELECTRONICS·Filed 2000·Granted Jan 3, 2006·72 cites·17 claims
- 0694US6747694B1Television signal processor for generating video signal of wide dynamic range, television camera using the same, and method for television signal processingHITACHI ELECTRONICS·Filed 2000·Granted Jun 8, 2004·95 cites·8 claims
- 0793US6754367B1Method and apparatus for automatically detecting intrusion object into view of image pickup deviceHITACHI ELECTRONICS·Filed 2000·Granted Jun 22, 2004·120 cites·30 claims
- 0893US4156237AColored display system for displaying colored planar figuresHITACHI ELECTRONICS·Filed 1977·Granted May 22, 1979·81 cites·10 claims
- 0992US6445409B1Method of distinguishing a moving object and apparatus of tracking and monitoring a moving objectHITACHI ELECTRONICS·Filed 1999·Granted Sep 3, 2002·192 cites·62 claims
- 1091US6115037AMotion image control method and apparatusHITACHI ELECTRONICS·Filed 1997·Granted Sep 5, 2000·80 cites·19 claims
- 1191US4158149AElectronic switching circuit using junction type field-effect transistorHITACHI ELECTRONICS·Filed 1977·Granted Jun 12, 1979·86 cites·5 claims
- 1290US5956453AMethod of editing moving image and apparatus of editing the sameHITACHI ELECTRONICS·Filed 1997·Granted Sep 21, 1999·71 cites·13 claims
- 1390US4414575AAutofocus systemHITACHI ELECTRONICS·Filed 1981·Granted Nov 8, 1983·54 cites·5 claims
- 1487US6487360B1Method, 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 featureHITACHI ELECTRONICS·Filed 1998·Granted Nov 26, 2002·58 cites·21 claims
- 1587US6404455B1Method for tracking entering object and apparatus for tracking and monitoring entering objectHITACHI ELECTRONICS·Filed 1998·Granted Jun 11, 2002·142 cites·31 claims
- 1687US4792939ADuplex radio communication transceiverHITACHI ELECTRONICS·Filed 1987·Granted Dec 20, 1988·92 cites·12 claims
- 1785US4906885AElectrode material for surface acoustic wave devices and surface acoustic wave device using the sameHITACHI ELECTRONICS·Filed 1988·Granted Mar 6, 1990·35 cites·7 claims
- 1885US3991265ASignal editing and processing apparatusHITACHI ELECTRONICS·Filed 1974·Granted Nov 9, 1976·29 cites·10 claims
- 1984US6577807B1Editing method and apparatus for moving picturesHITACHI ELECTRONICS·Filed 1999·Granted Jun 10, 2003·44 cites·15 claims
- 2083US5978651AMethod for bidirectionally transmitting digital video signal and digital video signal bidirectional transmission systemHITACHI ELECTRONICS·Filed 1997·Granted Nov 2, 1999·79 cites·21 claims
- 2182US6900838B1Method 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 methodHITACHI ELECTRONICS·Filed 2000·Granted May 31, 2005·29 cites·8 claims
- 2282US6459759B1X-ray tomography apparatus and method of taking tomographic image of object with the apparatusHITACHI ELECTRONICS·Filed 2000·Granted Oct 1, 2002·23 cites·6 claims
- 2381US6346761B1Surface acoustic wave device capable of suppressing spurious response due to non-harmonic higher-order modesHITACHI ELECTRONICS·Filed 2000·Granted Feb 12, 2002·22 cites·21 claims
- 2480US7020116B1Method and apparatus of data transmissionHITACHI ELECTRONICS·Filed 2000·Granted Mar 28, 2006·33 cites·13 claims
- 2580US5828784AData coding method and apparatus using a plurality of blocks of different lengthHITACHI ELECTRONICS·Filed 1995·Granted Oct 27, 1998·85 cites·15 claims
- 2680US5802451ANon-linear compensation circuit for a power amplifierHITACHI ELECTRONICS·Filed 1996·Granted Sep 1, 1998·48 cites·11 claims
- 2780US4367495AMethod and apparatus for magnetic recording and reproduction of digital signalHITACHI ELECTRONICS·Filed 1980·Granted Jan 4, 1983·22 cites·6 claims
- 2879US6546115B1Method of updating reference background image, method of detecting entering objects and system for detecting entering objects using the methodsHITACHI ELECTRONICS·Filed 1999·Granted Apr 8, 2003·73 cites·22 claims
- 2979US6118925AMethod of and system for confirming program materials to be broadcasted and then broadcasting the program materials, and recording medium having recorded therein a procedure for implementing the methodHITACHI ELECTRONICS·Filed 1996·Granted Sep 12, 2000·72 cites·12 claims
- 3079US4195230AInput screenHITACHI ELECTRONICS·Filed 1978·Granted Mar 25, 1980·22 cites·11 claims
- 3177US5682431AFM stereo broadcasting apparatus and methodHITACHI ELECTRONICS·Filed 1994·Granted Oct 28, 1997·50 cites·16 claims
- 3276US6304611B1OFDM modulator and OFDM modulation method for digital modulated wave having guard intervalHITACHI ELECTRONICS·Filed 1998·Granted Oct 16, 2001·104 cites·19 claims
- 3376US6108033AMethod and system monitoring video image by updating template imageHITACHI ELECTRONICS·Filed 1997·Granted Aug 22, 2000·63 cites·13 claims
- 3476US5493331AApparatus for judging the order of arrival of racers at a goal in a race and the time taken for the race, using color image pickupHITACHI ELECTRONICS·Filed 1994·Granted Feb 20, 1996·44 cites·20 claims
- 3576US4476437ASystem for detecting abnormal condition of high frequency output signal in its power levelHITACHI ELECTRONICS·Filed 1982·Granted Oct 9, 1984·22 cites·2 claims
- 3675US6693956B1Power amplifier having negative feedback circuit for transmitterHITACHI ELECTRONICS·Filed 2000·Granted Feb 17, 2004·21 cites·6 claims
- 3775US5912544AElectronic equipment and method for enabling plural types of batteries to be selectively usedHITACHI ELECTRONICS·Filed 1997·Granted Jun 15, 1999·98 cites·15 claims
- 3875US5771263ACommunication system control method and communication system using the methodHITACHI ELECTRONICS·Filed 1997·Granted Jun 23, 1998·45 cites·8 claims
- 3974US5926065ADigital modulator having a digital filter including low-speed circuit componentsHITACHI ELECTRONICS·Filed 1997·Granted Jul 20, 1999·109 cites·3 claims
- 4074US5914592ASampling signal generating circuit for sampling apparatus and digital oscilloscopeHITACHI ELECTRONICS·Filed 1996·Granted Jun 22, 1999·37 cites·12 claims
- 4174US5512946ADigital video signal processing device and TV camera device arranged to use itHITACHI ELECTRONICS·Filed 1995·Granted Apr 30, 1996·50 cites·7 claims
- 4273US6466260B1Traffic surveillance systemHITACHI ELECTRONICS·Filed 1998·Granted Oct 15, 2002·137 cites·13 claims
- 4373US6444967B1Microscope in-focus state detecting method and apparatus using image contrast detectionHITACHI ELECTRONICS·Filed 2000·Granted Sep 3, 2002·14 cites·21 claims
- 4473US5701581AMethod for bidirectionally transmitting digital video signal and digital video signal bidirectional transmission systemHITACHI ELECTRONICS·Filed 1994·Granted Dec 23, 1997·33 cites·14 claims
- 4573US5579434ASpeech signal bandwidth compression and expansion apparatus, and bandwidth compressing speech signal transmission method, and reproducing methodHITACHI ELECTRONICS·Filed 1994·Granted Nov 26, 1996·80 cites·11 claims
- 4673US3984189AMethod and apparatus for detecting defects in a surface regardless of surface finishHITACHI ELECTRONICS·Filed 1974·Granted Oct 5, 1976·27 cites·28 claims
- 4772US6512798B1Digital communication system of orthogonal modulation typeHITACHI ELECTRONICS·Filed 1999·Granted Jan 28, 2003·78 cites·11 claims
- 4872US5943374AOut-of-synchronization recovery method and apparatus of data transmission systemHITACHI ELECTRONICS·Filed 1996·Granted Aug 24, 1999·45 cites·23 claims
- 4972US4004205AHybrid servo control systemHITACHI ELECTRONICS·Filed 1973·Granted Jan 18, 1977·13 cites·15 claims
- 5071US4409627AVideo signal decoding circuitHITACHI ELECTRONICS·Filed 1980·Granted Oct 11, 1983·19 cites·6 claims
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