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Patent Searching and Data


Title:
CYCLIC NOISE REDUCER
Document Type and Number:
Japanese Patent JPH03266565
Kind Code:
A
Abstract:

PURPOSE: To smoothly process the scene change and to reduce the noise mixed in a picture signal by selectively outputting the memory output signal or the memory input signal of a delay means as an output picture signal by switching.

CONSTITUTION: When the large picture change like the scene change does not occur in an input picture signal 1, the memory output signal of a delay means 3 is outputted as an output picture signal 10; but otherwise, the memory input signal of the delay means 3 is outputted as the output picture signal 10 by switching of a switching means 9. Thus, this device immediately copes with the large picture change like the scene change, and the smooth processing of the large picture change like the scene change is possible, and the noise mixed in the input picture signal is reduced without degrading the outline resolution of a moving object.


Inventors:
ARISAWA YASUO
AZUMA MOTOO
KIJIMA TAKAYUKI
Application Number:
JP6403390A
Publication Date:
November 27, 1991
Filing Date:
March 16, 1990
Export Citation:
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Assignee:
OLYMPUS OPTICAL CO
International Classes:
H04N5/21; (IPC1-7): H04N5/21
Attorney, Agent or Firm:
Kenji Mogami