Inventor

Koubun Sakagami

Inventor

Kanagawa, JP

Overview

1990–2015

Patent span

Physics

Primary field (CPC G)

Patents· 14 as inventor

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

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer33%

H03MCoding21%

H04NPictorial communication, e.g. television13%

G06FElectric digital data processing8%

G11CStatic stores8%

G03GElectrography4%

G06VImage or video recognition or understanding4%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers4%

H04SStereophonic systems4%

PatentTitleYear

9,008,320'Apparatus, system, and method of image processing, and recording medium storing image processing control program'2015 8,031,942'Matching device'2011 7,420,905'Information reproducing method judging a multivalued level of a present cell by referring to judged multivalued levels of a preceding cell and an ensuing cell'2008 7,376,066'Information recording method and an information recording apparatus'2008 7,350,118'Method and apparatus for recording information in concatenated manner'2008 7,251,207'Multi-level data processing method and apparatus'2007 7,197,000'Method of generating an efficient sequence of multi-level random numbers used for an information recording medium'2007 7,082,091'Information reproducing method judging a multivalued level of a present cell by referring to judged multivalued levels of a preceding cell and an ensuing cell'2006 7,046,610'Recording medium suitable for recording/reproducing multi-level data'2006 6,888,479'Data processing method, circuit, and apparatus with increased accuracy'2005 5,497,194'Electronic camera for photographing and recording an image and for recording and reproducing a voice'1996 5,142,380'Image data processing apparatus'1992 5,140,322'Coder unit for variable word length code'1992 4,977,417'Electrophotography system'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to VICTOR COMPANY OF JAPAN (1)· patent assignee history

1990Based in Sagamihara, JP· patent location history

1992–2008Patents assigned to RICOH KK (11)· patent assignee history

1992–1996Based in Yokohama, JP· patent location history

2005–2015Based in Kanagawa, JP· patent location history

2011–2015Patents assigned to RICOH CO LTD (2)· patent assignee history

2015Patents assigned to SAKAGAMI KOUBUN (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICOH KK	11	1992–2008
RICOH CO LTD	2	2011–2015
SAKAGAMI KOUBUNself	1	2015
VICTOR COMPANY OF JAPAN	1	1990

Locations

Location	Patents	Span
Kanagawa, JP	10	2005–2015
Yokohama, JP	3	1992–1996
Sagamihara, JP	1	1990