Inventor

Masaaki Fujinawa

Inventor

Tokyo, JP

Overview

33→

Patents

1977–2000

Patent span

Physics

Primary field (CPC G)

Patents· 33 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Nprimary

H04NPictorial communication, e.g. television28%

G06FElectric digital data processing25%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

G06VImage or video recognition or understanding13%

G06TImage data processing or generation, in general11%

G05BControl or regulating systems in general2%

G09GArrangements or circuits for control of indicating devices using static means to present variable information2%

G11BInformation storage based on relative movement between record carrier and transducer2%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters2%

H04LTransmission of digital information, e.g. telegraphic communication2%

PatentTitleYear

6,094,647'Presearch type document search method and apparatus'2000 5,901,254'Apparatus and method for image reduction'1999 5,608,858'Method and system for registering and filing image data'1997 5,590,317'Document information compression and retrieval system and document information registration and retrieval method'1996 5,576,849'Image data transformation apparatus and image entry apparatus'1996 5,539,843'Image processing system'1996 5,522,041'Data processor and data transfer method'1996 5,519,857'Hierarchical presearch type text search method and apparatus and magnetic disk unit used in the apparatus'1996 5,452,102'Image processing unit'1995 5,428,727'Method and system for registering and filing image data'1995 5,390,034'Color image processing method and apparatus with chrominance emphasizing process'1995 5,388,167'Document image processing system and document image processing method'1995 5,353,397'Registration/search system for registering and searching image data using vector data attributes'1994 5,335,084'Document image filing system having input color mode selecting capability'1994 5,278,981'Character stream search apparatus using a finite state automation'1994 5,268,771'Image restoration processing system and method'1993 5,235,681'Image filing system for protecting partial regions of image data of a document'1993 5,231,482'Image filing apparatus and method for thereby encoding and storing various documents'1993 5,181,260'Method for determining the amount of skew of image, method for correcting the same, and image data processing system'1993 5,168,533'Hierarchical presearch type text search method and apparatus and magnetic disk unit used in the apparatus'1992 5,140,644'Character string retrieving system and method'1992 5,129,016'System for registration of documents'1992 5,128,748'Image processing system and apparatus for processing color documents'1992 5,129,011'Method and apparatus for retrieving image data'1992 5,125,045'Image processing system'1992 5,051,886'System for character stream search using finite state automaton technique'1991 5,021,989'Document browsing apparatus with concurrent processing and retrievel'1991 4,937,681'Picture coding system for document image'1990 4,893,188'Document image entry system'1990 4,757,302'Image display apparatus'1988 4,485,410'Graphic reading'1984 4,143,310'Apparatus for positioning'1979 4,051,417'Control system for a brushless motor'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2000Patents assigned to HITACHI LTD (32)· patent assignee history

1977–1984Based in Hachioji, JP· patent location history

1984Patents assigned to HITACHI KOKI KK (1)· patent assignee history

1988–2000Based in Tokyo, JP· patent location history

1992–1995Based in Nishitama-gun, JP· patent location history

1994–1996Based in Odawara, JP· patent location history

1995–1999Based in Kanagawa, JP· patent location history

1997Patents assigned to HITACHI MICROSOFTWARE SYSTEMS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	32	1977–2000
HITACHI KOKI KK	1	1984
HITACHI MICROSOFTWARE SYSTEMS	1	1997

Locations

Location	Patents	Span
Tokyo, JP	16	1988–2000
Kanagawa, JP	4	1995–1999
Odawara, JP	4	1994–1996
Nishitama-gun, JP	3	1992–1995
Hachioji, JP	3	1977–1984