Progressive scan video processing

Abstract

A method and system for separating even and odd lines in a progressive video signal comprises generating from the even lines simulated odd lines, comparing the simulated odd lines with the original odd lines to obtain a support signal, and transmitting the even lines and the support signal in order to reconstitute the full picture. Alternatively, separating odd and even lines may be replaced by separating high- and low-frequency vertical signal components, generating from the low-frequency vertical signal components simulated high-frequency vertical signal components, comparing the simulated high-frequency vertical signal components with the original high-frequency signal components to obtain a support signal.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of provisional Patent Application Ser. No. 61 / 760,275, filed Feb. 4, 2013, and is assigned to the Assignee of the present application and incorporated herein by reference.BACKGROUND[0002]In progressive video scanning, successive scanning lines are vertically aligned from frame to frame. For example, in the 1080p / 60 standard (1080 scanning lines per frame, 60 frames per second), line 1 of frame 2 is scanned at the same vertical location as is line 1 of frame 1, and so are lines 1 of frames 3, 4, etc. For interlaced video, line 1 of field 2 is vertically located between line 1 and line 2 of field 1, and so is line 1 of field 4, while line 1 of field 3 is vertically coincident with line 1 of field 1.[0003]An interlaced signal is composed of a succession of even and odd fields, two successive fields making a frame. For example, in the 1080i / 60 standard (1080 lines interlaced, 60 fields per second), each fie...

AI Technical Summary

Benefits of technology

[0017]In yet a further aspect of the present invention, a method for processing a progressive scan video signal comprises separating the low vertical frequency and high frequency vertical signal components of the progressive scan video signal, deriving a simulation of the high frequency vertical signal components of the progressive scan video signal from the low frequency vertical signal components, subtracting said simulation from the high frequency vertical signal components separated from the progressive scan video signal to obtain an error signal, derivi

Problems solved by technology

In these cases, interlaced signals have to be de-interlaced, which is costly and difficult.

The main disadvantage of progressive scan is an increase by a ratio of two of bandwidth requirements, as compared to an interlaced standard having the same field rate as the comparable progressive scan standard.

The requirements for bandwidth are increasing dai

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