Inventor

KAGEYAMA ATSUHISA

JP48 patents

⚠️ This page may combine multiple inventors who share the name “KAGEYAMA ATSUHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KAGEYAMA ATSUHISA

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Image quality correction circuit for video signals

Gradation correcting apparatus for correcting luminance signal in accordance with detected color signal

False contour correcting apparatus and method

Apparatus for distinguishing between a plurality of video signal types, apparatus for automatic aspect ratio determination and television receiver

Picture information detecting apparatus for a video signal

Video signal gradation corrector which prevents excessive extension of the dynamic range

Video signal gradation corrector

Video signal gradation corrector providing smooth correction while avoiding oscillation of a corrected output luminance signal due to noise and achieving fast response to sudden video scene changes

Gradation corrector with improved smoothing, signal-to-noise ratio and fast response time

Gradation correcting apparatus gradation correcting method and video display apparatus

Data signal extraction apparatus

Dynamic gamma correction apparatus

Device for clamping multiple signals

False contour correcting apparatus and method

Gradation correction circuit, and γ correction apparatus

Compensation voltage generating apparatus for multipicture display and video display including the same

Contour correction circuit and contour correction method

Video signal character converting device and method of the same

Histogram generator

Gamma compensation apparatus

Histogram operating unit for video signals

Black level detecting circuit of video signal

Gradation compensating apparatus for a video signal

Apparatus for correcting a black level of a video signal

Contrast correction device for correcting video signal contrast by varying luminance signal

Video signal correction system

Apparatus for correcting a color tone of a video signal

Apparatus for correcting a black level of a video signal

Luminance signal noise suppressor

Contrast correction device for correcting video signal contrast by varying luminance signal

Noise reduction circuit

Image signal average picture level detecting apparatus

Apparatus for identifying standard and non-standard video signals

Contrast corrector for video signal

Gradation correction apparatus

Pure red color detection circuit and color compensation circuit using the same

2-line YC separation device

Color difference signal correction apparatus

2-line YC separation device

Semiconductor device

Video signal processing apparatus

Black level compensation circuit for a luminance signal

Apparatus for processing luminance signal

Pure red color detection circuit and color compensation circuit using the same

Noise reducing apparatus

PANASONIC CORP

Video signal processing device

Resolution determination device, image processor, and image display device

SOCIONEXT INC

Image correction device and video content reproduction device