KR970073100A - BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical delay reproducing apparatus for a digital television, - Google Patents

Abstract

The present invention relates to a vertical delay reproduction apparatus and a digital delay television system, and more particularly, to a digital television system in which a video signal of a television broadcast signal is delayed by a predetermined time period in a digital television so that signal data included in a vertical blanking period of the broadcast signal can be reproduced, Lt; / RTI > Accordingly, the present invention is characterized in that it comprises function command input means (10, 12) for setting a function command for reproducing the signal data of the vertical blanking period according to the video signal of the television broadcast, A second memory means (16) for memorizing the vertical / horizontal synchronizing signal extracted from the video signal, a second memory means (16) for storing the vertical / horizontal synchronizing signal extracted from the video signal, Vertical / horizontal synchronizing extraction means (18, 20, 22) for extracting a vertical / horizontal synchronizing signal by separating a synchronizing signal from the video data through the first memory means (16) Vertical detecting means for generating vertical detecting data and counting data of a scanning period according to a result of comparing the vertical / horizontal synchronizing signals extracted by the vertical / horizontal synchronizing extracting means (18.20.22) (10, 12) Horizontal synchronizing signals from the vertical / horizontal synchronizing extracting means (18, 20, 22) to the second memory means (16) by receiving a function command of screen reproduction for signal data of vertical blanking period from the vertical / Address designation of the image memory 4 so that the video data is delayed by 1/2 screen based on the vertical detection data detected as a result of supplying as the reference data to the vertical detection means and the counting data of the scanning period, And control means (32) for performing reading control.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical delay reproducing apparatus for a digital television,

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FIG. 1 is a block diagram showing a vertical delay reproducing apparatus of a digital television according to the present invention. FIG. 2 is a block diagram of a vertical delay reproducing apparatus of a digital television according to a preferred embodiment of the present invention. FIG. 3 is a diagram illustrating a state in which signal data included in a vertical blanking period is delayed and displayed on an image screen according to a preferred embodiment of the present invention. FIG.

Claims (2)

(2) for sampling a video signal of a television broadcast and converting the sampled video signal into digital data, an image memory means (4) for memorizing the data converted image data on a screen basis, a video image And a screen driving means (6) for driving a pixel for screen reproduction on the screen display means (8) by data, characterized in that the digital television comprises a display means (6) for reproducing the signal data of the vertical blanking period according to the video signal of the television broadcast A first memory means (14) in which code data corresponding to a function command of the function command input means (10, 12) is stored; A second memory means (16) for memorizing the extracted vertical / horizontal synchronizing signal, a second memory means (16) for extracting a vertical / horizontal synchronizing signal by separating the synchronizing signal from the video data through the data converting means Horizontal and vertical synchronization extracting means for extracting vertical and horizontal synchronizing signals extracted from the vertical and horizontal synchronizing extracting means with the vertical and horizontal synchronizing signals of the first memory means as reference data, Vertical detection means for generating vertical detection data and counting data of a scanning period in accordance with a result of comparison between the vertical and horizontal synchronizing signals and a screen for signal data in the vertical blanking period from the function command input means (10, 12) Horizontal synchronizing signal from the vertical / horizontal synchronizing extracting means (18, 20, 22) is memorized in the second memory means (16), and the vertical detecting means (32) for performing the address designation and the reading control of the image memory (4) so that the video data is delayed by 1/2 screen based on the vertical detection data detected as a result of supplying the video data and the counting data of the scanning period And And a vertical delay reproducing apparatus for a digital television. The vertical memory device according to claim 1, wherein the vertical detection means compares a vertical synchronization signal from the vertical / horizontal synchronization extraction means (18, 20, 22) using the vertical synchronization signal of the first memory means (16) A pulse generator 26 for receiving the output signal according to the comparison result of the first comparator 24 and issuing the vertical detection data, A second comparator 28 for comparing the horizontal synchronizing signal from the vertical / horizontal synchronizing extracting means 18, 20, 22 with the reference signal as the reference data, and an output according to the comparison result of the second comparator 28 And a counter (30) for counting the received signal and resetting it by the vertical detection data from the pulse generator (26). ※ Note: It is disclosed by the contents of the first application.