Method and device for phase correction of a vertically distorted digital image
AssigneeMicronas GmbH
InventorsMirko Hahn, Guenter Scheffler, Dirk Wendel
Life of this patent
Estimating the term…
Abstract
A device for correcting the phase of a vertically distorted digital picture receives picture data and a vertical phase correction signal, and assigns lines of the digital picture to a first half picture and to a second half picture. The lines of the second half picture are phase corrected with respect to the first half picture and the first and second half pictures are displayed sequentially. The phase correction is determined in response an increment signal that describes the change of an imaging factor in the veritcal direction of the digital picture on a line-by-line basis and a picture position signal indicative of whether the first half picture or the second half picture is being output.
Claims18
A device for correcting the phase of a vertically distorted digital picture, comprising:
- a line determination device that receives picture data of a digital picture, and assigns lines of the digital picture to a first half picture and to a second half picture in accordance with an imaging factor, which changes in the vertical direction of the digital picture, such that the lines of the first half picture and the lines of the second half picture are displayed sequentially;
- a phase correction unit that generates a phase correction signal for the line determination device, such that the phase correction signal depends on the vertical position in the second half picture and is taken into account by the line determination device when generating the second half picture;
- where
- the phase correction unit derives the phase correction signal for the second half picture from an increment signal, which describes the change of the imaging factor in the vertical direction of the digital picture.
A device for correcting the phase of a vertically distorted digital picture, comprising:
- means, for receiving picture data and a vertical phase correction signal, and for assigning lines of the digital picture to a first half picture and to a second half picture, such that the lines of the second half picture are phase corrected with respect to the first half picture and the first and second half pictures are displayed sequentially;
- and
- means, responsive to an increment signal that describes the change of an imaging factor in the vertical direction of the digital picture on a line-by-line basis, for generating the phase correction signal.
A device for correcting the phase of a vertically distorted digital picture, comprising:
- means, for receiving picture data and a vertical phase correction signal, and for assigning lines of the digital picture to a first half picture and to a second half picture, such that the lines of the second half picture are phase corrected with respect to the first half picture and the first and second half pictures are displayed sequentially;
- and
- means, responsive to (i) an increment signal that describes the change of an imaging factor in the vertical direction of the digital picture on a line-by-line basis and to (ii) a picture position signal indicative of whether the first half picture or the second half picture is being output, for generating the phase correction signal.
Dependencies are inferred from the claim text.