Patent ID: 8711064

Claim:
A digital-signal processing apparatus for processing elementary-color data to be output to a liquid-crystal display apparatus having a color panel structure, said digital-signal processing apparatus comprising: a line-unit weight-coefficient sum computation section configured to compute a line-unit sum of weight coefficients, said weight coefficients including at least a black-level coefficient, a white-level coefficient, and an intermediate level coefficient, for each line unit of said weight coefficients and for each of the elementary-color data; a compensation-coefficient computation section configured to compute a compensation coefficient reflecting other color information of each of said line units for each of the elementary-color data; a partial-weight-coefficient-sum computation section configured to successively compute a partial weight-coefficient sum of some of the weight coefficients in a range starting from a head of each of said line units and ending at the position of a pixel serving as a processing subject for each of the elementary-color data; a first-compensation-quantity-component computation section configured to compute a first component of a compensation quantity for each of the elementary-color data as a component effective for a front end of a scan direction for the position of said pixel serving as a processing subject on the basis of a difference between said compensation coefficient and said partial-weight-coefficient sum; a second-compensation-quantity-component computation section configured to compute a second component of said compensation quantity for each of the elementary-color data as a component effective for a back end of said scan direction for the position of said pixel serving as a processing subject on the basis of said compensation coefficient; a compensation-quantity computation section configured to successively compute said compensation quantity to be applied to each of the elementary-color data at the position of said pixel serving as a processing subject on the basis of said computed first and second components; a line memory used for applying a one-line period extension process to each of the elementary-color data until a compensation quantity for each of the elementary-color data is calculated; and a horizontal-cross-talk compensation section configured to successively compensate each of the elementary-color data, which has been subjected to said 1-line period extension process in said line memory, by making use of said compensation quantity computed for each of the elementary-color data.