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US 7,548,279 B2Granted
Video signal processor
AssigneeKabushiki Kaisha Toshiba
InventorsHirotoshi Miyazawa, Akihiro Matsumoto
Life of this patent
Estimating the term…
Abstract
In the event that the maximum Imax of R, G, B color signals is detected and the maximum value Imax is equal to or higher than the suppression start level Vcs which is lower than a predetermined level to be restricted, a suppression gain is generated in accordance with the value of this maximum Imax, and by this suppression gain Gc, R, G, B color signals to be inputted are simultaneously suppressed. By this, color signals can be restricted to the predetermined range and outputted without impairing white balance.
Claims10
A video signal processor comprising:
- a first detector unit configured to detect the maximum signal level in multiple color signals to be inputted;
- a suppression start level setting unit configured to set the suppression start level to start suppression of signal level in the multiple color signals;
- a second detector configured to detect that the maximum signal level in the multiple color signals becomes higher than the suppression start level;
- and
- a suppression unit configured to suppress the multiple color signals in common by the use of gains which suppress the maximum signal level within the range from the suppression start level to a predetermined level which exceeds the suppression start level.
2 more elements
A color signal suppressing method comprising:
- a maximum signal level detecting step of detecting the maximum signal level in multiple color signals to be inputted;
- a suppression gains setting step of setting suppression gains for suppressing the multiple color signals on the basis of the maximum signal level detected;
- and
- a signals suppressing step of suppressing the multiple color signals in common by the use of gains which suppress the maximum signal level within the range where the detected maximum signal level attains from a first predetermined level to a second predetermined level which exceeds the first predetermined level.
1 more element
Dependencies are inferred from the claim text.