Video signal processing apparatus for converting composite image input signals into output signals having increased scan lines

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United States of America Patent

PATENT NO 5014129
SERIAL NO

07415276

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Abstract

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A video signal processing apparatus for converting an input analog video signal, including a variable-density image signal and a two-state image signal, into an output analog video signal whose number of scanning lines is increased without degrading the visibility of the two-state image; wherein the input video signal is separated into variable-density image data and two-state image data; then, a portion of the variable-density image data from which the two-state image data is removed, is replaced with a variable-density image data portion immediately before the beginning of the two-state image data; then, the variable-density image data and the two-state image data are stored separately in a memory; then, a general analog-mode enlarge interpolation processing, such as a linear interpolation processing, is performed on the variable-density image data; then, a two-state mode enlarge interpolation processing is performed 10 on the two-state image data; and then, the variable-density image data and the two-state image data, both of which are enlarge interpolated, are recombined.

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Patent Owner(s)

Patent OwnerAddress
YOKOGAWA MEDICAL SYSTEMS LIMITED7-127 ASAHIGAOKA 4-CHOME HINO-SHI TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Imanishi, Yasuo Hino, JP 39 542

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