SU1483677A1 - Method for reproduction of unidirectional of moving image - Google Patents

Abstract

The invention relates to a television technique. The purpose of the invention is to improve the quality of reproduction by improving the smoothness of movement of the reproduced moving image. The device implementing the method comprises an X-ray receiver, an A / D converter, a memory unit, a D / A converter, a video monitoring unit, Mr. sync pulses, a matching unit, a shift unit and an electric drive unit. Hr produces frame sync pulses, horizontal sync pulses and pulses with a half-frame duration of an image of 2N / frame. The shift block performs the time shift of the horizontal sync pulses by time Τ. The shift of the second half-frame is made by the value Τ = 0.5NT / N, where - N is the number of image elements on the line by which the image is shifted during the period of a television frame, N is the total number of image elements along the line, T is the forward time the progress of the lower-case television sweep. 3 il.

Description

The invention relates to a television technique and can be used to reproduce a unidirectional moving image, in particular, in X-ray television scanner.

The purpose of the invention is to improve the quality of reproduction by improving the smoothness of movement of the reproduced moving image. I

Fig. 1 is an electrical block diagram of a device implementing a method for reproducing a unidirectional moving image; in fig. 2 - time diagrams that show his work.

A device that implements a method of reproducing a unidirectional moving image (Fig. 1) contains an X-ray receiver 1, an analog-to-digital converter (A / D) 2, a RAM block 3, a digital-to-analog converter (D / A converter) 4, a video control unit (VKB) 5, generator 6 sync pulses, coincidence unit 7, shift unit 8, drive unit 9.

The operations of the unidirectional moving image reproduction method are performed as follows.

The generator 6 sync pulses produces personnel sync pulses

four.

00

with about

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The CC, horizontal sync pulses, and pulses with a half-frame duration of 2n / frame image. According to the start signal by the electric drive unit 9, the conveyor is turned on and by the coincident unit 7 for the time of each second half-frame of the image, the signal Dis. permitting the operation of the shift unit 8 (Fig. 2a). The shift unit 8 carries out the time shift of the horizontal sync pulses by a time Ј (see Fig. 26, c). From the output of the shift block 8, the horizontal sync pulses are fed to the input of the WKB 5.

The shift of the second half-frame of the image is produced by the value T 0.5 nT / N, where n is the number of pixels on the line by which the image is shifted during the period of the television frame; N is the total number of pixels per

line; T is the time of the forward course of a horizontal television sweep.

Claims (1)

Invention Formula A method of reproducing a unidirectional moving image based on sequential frame-by-frame display of the memorized moving image with a shift by n of its elements in each frame in the direction of movement of the image, characterized in that, in order to improve the quality of reproduction by increasing the smoothness of movement of the reproduced moving image, the frame-by-frame display produces two half-frames with a shift in the second half-frame of the image on p / 2 of its elements in the direction of movement of the image. a b