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Image Processing related Japan Patent Search for Digital Camera Litigation: Rotation of the Image during Display

We performed a Japanese patent search relating to an image processing method of a digital camera.
Search language: Japanese
Period of the search: Japanese documents published before July 31, 1997
Databases used in the search: Patolis, NRI and IPDL

SEARCH RESULTS:
Search strings used and number of hits generated in one search are summarized below for reference.

Search No.	Search strings used	Japanese patent types searched	Number of hits
S9	S1*S2*S3*S4*S8	A、U、U9、T、TU、S	873
S8	Full text search using Japanese synonyms of “digital camera” OR “electronic camera” OR “electronic still camera”	A、U、U9、T、TU、S	8686
S4	Full text search using Japanese synonyms of “rotation” OR “turn” OR “pivot”	A、U、U9、T、TU、S	2074744
S3	Full text search using Japanese synonyms of “picture” OR “image” OR “portrait" OR “photograph”	A、U、U9、T、TU、S	946850
S2	Full text search using Japanese synonyms of “orientation” OR “direction”	A、U、U9、T、TU、S	3381019
S1	IPC search (196401 - 199707): H04N5/232+ H04N5/225+ H04N5/262+ H04N5/907+ H04N5/222+ H04N5/765+ H04N5/781+ H04N101:00	A、U、U9、T、TU、S	23241

These searches generated a total of 1258 hits. We downloaded full patent documents for all these hits, reviewed these documents by screening the specifications of these documents.
4 Japanese patent documents that are considered to be relevant art for the target patent are uncovered.

Tips and case studies of searching Japan patents relating to digital cameras:
How to Search Japanese Patents for Digital Cameras
Search Japan patents for Digital Cameras with unique parameter setting function
Search Japan patents for Digital Cameras with image rotation during display