Inventor
HIRAHATA SHIGERU
JP31 patents
⚠️ This page may combine multiple inventors who share the name “HIRAHATA SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
30 patentsUS5974218AOct 26, 1999
Method and apparatus for making a digest picture
HITACHI LTD217 citations99
US5218436AJun 8, 1993
Processing circuit for a plurality of different TV signals
HITACHI LTD156 citations97
US5534934AJul 9, 1996
Television receiver capable of enlarging and compressing image
HITACHI LTD64 citations95
US5132793AJul 21, 1992
Television receiver compatible with both standard system television signal and high definition television signal
HITACHI LTD75 citations95
US5343238AAug 30, 1994
Wide-screen television receiver with aspect ratio conversion function and method of displaying a range to be magnified and displayed
HITACHI LTD61 citations94
US6683956B1Jan 27, 2004
Encrypting conversion apparatus, decrypting conversion apparatus, cryptographic communication system, and electronic toll collection apparatus
HITACHI LTD36 citations92
US5353065AOct 4, 1994
Apparatus for receiving wide/standard picture plane television signal
HITACHI LTD34 citations92
US5243421ASep 7, 1993
Signal processor for a wide televison receiver
HITACHI LTD40 citations92
US4853765AAug 1, 1989
Sequential scanning converter with frame comb filter and freeze frame feature
HITACHI LTD30 citations92
US4794454ADec 27, 1988
Movement detection circuit of a video signal used in a television receiver
HITACHI LTD28 citations92
US4733297AMar 22, 1988
Video signal processing circuit of motion adaptive type
HITACHI LTD26 citations92
US4733300AMar 22, 1988
Contour signal correction circuit for television receiver
HITACHI LTD36 citations92
US5249037ASep 28, 1993
Image signal correction circuit and image signal processor using the circuit
HITACHI LTD41 citations91
US4953032AAug 28, 1990
Motion signal generating circuit for use in a television receiver
HITACHI LTD25 citations91
US5276515AJan 4, 1994
Compatible wide aspect ratio receiver with spatial filtering for variable zoom
HITACHI LTD33 citations90
US6606385B1Aug 12, 2003
Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same
HITACHI LTD14 citations84
US4748504AMay 31, 1988
Video memory control apparatus
HITACHI LTD20 citations82
US4388621AJun 14, 1983
Drive circuit for character and graphic display device
HITACHI LTD21 citations82
US4408197AOct 4, 1983
Pattern display apparatus
HITACHI LTD21 citations81
US5181110AJan 19, 1993
Video signal processing circuit capable of enlarging and displaying a picture
HITACHI LTD10 citations74
US5029006AJul 2, 1991
Video signal processing circuit capable of enlarging and displaying a picture
HITACHI LTD18 citations74
US4591845AMay 27, 1986
Character and graphic signal generating apparatus
HITACHI LTD15 citations74
US4473879ASep 25, 1984
Data transfer system in which time for transfer of data to a memory is matched to time required to store data in memory
HITACHI LTD19 citations74
US4802118AJan 31, 1989
Computer memory refresh circuit
HITACHI LTD18 citations73
US4775888AOct 4, 1988
Motion detector for chrominance signal in TV receiver
HITACHI LTD14 citations73
US4736252AApr 5, 1988
Motion detector for chrominance signal in TV receiver
HITACHI LTD14 citations73
US4404552ASep 13, 1983
Display device for both a character display and a graphic display
HITACHI LTD13 citations73
US4298931ANov 3, 1981
Character pattern display system
HITACHI LTD19 citations73
US4417318ANov 22, 1983
Arrangement for control of the operation of a random access memory in a data processing system
HITACHI LTD7 citations70
US6898578B2May 24, 2005
Recording apparatus for recording digital information
HITACHI LTD2 citations63