Video signal processing apparatus and video signal processing method
AssigneeKabushiki Kaisha Toshiba
InventorHirotoshi Miyazawa
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Abstract
Based on a first table in which a value of an input luminance signal is corresponded to a value of an output luminance signal acquired by performing nonlinear correction processing on the input luminance signal, there is created a second table in which a value of the input luminance signal is corresponded to a value of a color correction signal for performing amplitude control based on the nonlinear correction processing performed on the input luminance signal on an input color signal. The nonlinear correction processing is performed on the input luminance signal based on the first table and the amplitude control is performed on the input color signal based on the second table.
Claims11
A video signal processing apparatus comprising:
- a first creating unit configured to create a first table in which a value of an input luminance signal is corresponded to a value of an output luminance signal acquired by performing nonlinear correction processing on the input luminance signal;
- a second creating unit configured to create, based on the first table created in the first creating unit, a second table in which a value of the input luminance signal is corresponded to a value of a color correction signal for performing amplitude control based on the nonlinear correction processing performed on the input luminance signal on an input color signal;
- a nonlinear correcting unit configured to perform nonlinear correction processing on the input luminance signal based on the first table created in the first creating unit;
- and
- a color correcting unit configured to perform amplitude control on the input color signal based on the second table created in the second creating unit.
A video signal processing method comprising:
- a first step of creating a first table in which a value of an input luminance signal is corresponded to a value of an output luminance signal acquired by performing nonlinear correction processing on the input luminance signal;
- a second step of creating, based on the first table created in the first step, a second table in which a value of the input luminance signal is corresponded to a value of a color correction signal for performing amplitude control based on the nonlinear correction processing performed on the input luminance signal on an input color signal;
- and
- a third step of performing nonlinear correction processing on the input luminance signal based on the first table created in the first step and performing amplitude control on the input color signal based on the second table created in the second step.
A broadcasting receiver comprising:
- a receiving unit configured to receive a broadcasting signal;
- a generating unit configured to generate a luminance signal and a color signal from a broadcasting signal received in the receiving unit;
- a first creating unit configured to create a first table in which a value of a luminance signal generated in the generating unit is corresponded to a value of a luminance signal acquired by performing nonlinear correction processing on the luminance signal;
- a second creating unit configured to create, based on the first table created in the first creating unit, a second table in which a value of the luminance signal is corresponded to a value of a color correction signal for performing amplitude control based on the nonlinear correction processing performed on the luminance signal on a color signal generated in the generating unit;
- a nonlinear correcting unit configured to perform nonlinear correction processing on a luminance signal generated in the generating unit based on the first table created in the first creating unit;
- and
- a color correcting unit configured to perform amplitude control on a color signal generated in the generating unit based on the second table created in the second creating unit.
Dependencies are inferred from the claim text.