Inventor

Tokuya Fukuda

Inventor

Tokyo, JP

Overview

20→

Patents

1987–1998

Patent span

Electricity

Primary field (CPC H)

Patents· 20 as inventor

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

H04Nprimary

H04NPictorial communication, e.g. television63%

H03HImpedance networks, e.g. resonant circuits11%

G01RMeasuring electric variables7%

G02BOptical elements, systems or apparatus4%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%

G11BInformation storage based on relative movement between record carrier and transducer4%

H03GControl of amplification4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

PatentTitleYear

5,784,118'Video signal phase synchronizing method, circuit and synthesizing apparatus'1998 5,557,328'Video camera having an improved zoom system'1996 5,471,481'Testing method for electronic apparatus'1995 5,390,191'Apparatus and method for testing the interconnection between integrated circuits'1995 5,291,276'Apparatus for processing a video signal to generate video signal adjustment data that is self-contained with the video equipment'1994 5,291,277'Digital image signal processing circuits'1994 5,185,707'Focusing apparatus and digital filters for use therewith'1993 5,142,375'Video camera integral with magnetic recording and reproducing device, and with color video signal processing apparatus'1992 5,087,967'Color image pickup device having a level correcting circuit for correcting level variations in color image signals'1992 5,070,408'Focusing apparatus and digital filters for use therewith'1991 5,049,983'Digital camera apparatus having an analog emphasis circuitry'1991 4,926,261'Video noise reduction circuit'1990 4,891,689'Color signal matrix circuits'1990 4,851,930'Magnetic recording and reproducing apparatus compensating for the deviation of H alignment during a variable speed reproduction'1989 4,807,049'C-type comb filter with negative feedback'1989 4,750,033'Comb filter, chrominance and luminance signal separating circuit for modifying the level-frequency characteristic of the luminance signal'1988 4,731,674'Color video signal processing apparatus for crosstalk elimination'1988 4,725,900'Apparatus employing adjustable modulation index for reducing cross talk between recorded audio and video signals'1988 4,709,275'Apparatus for magnetically recording and/or reproducing two-channel audio signals together with a color video signal in successive oblique tracks on a magnetic tape'1987 4,689,580'Active filter circuit'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1998Patents assigned to SONY CORP (20)· patent assignee history

1987–1998Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SONY CORP	20	1987–1998

Locations

Location	Patents	Span
Tokyo, JP	20	1987–1998