Correction conversion circuit for converting to image data skew of which is corrected and skew quantity correction method
AssigneeNEC Corporation
InventorsHitoshi Takemoto, Hiromasa Kanno
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Abstract
According to an image data correction conversion circuit and a skew quantity correction method respectively according to the present invention, image data for predetermined lines is stored, the quantity of skew of the stored image data is measured, the number of blocks into which the image data is divided is operated based upon the quantity of the skew and a control signal for correcting and converting the image data based upon the operated data is output. A selector acquires image data the quantity of skew of which is corrected by selecting and outputting the stored image data for predetermined lines according to the control signal.
Claims9
An image data correction conversion circuit, comprising:
- line buffer which stores image data for predetermined lines;
- CPU measuring a quantity of skew of the image data stored in said line buffer, dividing the image data into a plurality of blocks based on the quantity of skew, and generating data for correcting skew of said image data in said line buffer based upon the quantity of the skew;
- a control circuit for generating a control signal based upon said data generated by said CPU;
- and
- a selector, responsive to said control signal, for selecting image data from said line buffer to correct the skew of said image data and outputting corrected image data of a horizontal scanning direction.
A skew quantity correction method, comprising:
- storing image data for predetermined lines,
- measuring a quantity of skew of said stored image data,
- dividing said image data in a number of blocks based upon said measured quantity of skew;
- and
- selecting and outputing said stored image data, the quantity of skew of which is corrected, based upon said divided blocks of image data.
Dependencies are inferred from the claim text.