Skew processing circuit and method of calculating a preset value

Details Skew processing circuit and method of calculating a preset value Skew processing circuit and method of calculating a preset value

1991-03-14

1995-05-23

Jankus, Almis

395136, 395148, G06T 1100

Patent

active

054188962

ABSTRACT:
A skew processing circuit 33 includes two line buffers, a skew processing type line buffer 331 and an original type line buffer 332, and a write/read control circuit 333 for controlling the two line buffers. The write/read control circuit 333 is a control circuit for writing a given image data in the line buffers 331, 332 in single lines and selectively reading the data written in the two line buffers 331, 332. When an image data is written in the original type line buffer 332, addressed are sequentially written from the head address 0. On the other hand, when the image data is written in the skew processing type line buffer 331, a write start address RH0 is determined in correspondence with a skew angle, and the write start address RH0 is shifted in each line to discard the head portion of the image data by specified dots (specified addresses). Thus, by controlling the writing of data in the two line buffers 331, 332 and reading data from them, an image in an arbitrary area can be processed into the skew with an arbitrary angle.

REFERENCES:
patent: 4788599 (1988-11-01), Sugishima
patent: 5187753 (1993-02-01), Bloomberg et al.

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