DE3117308A1 - - Google Patents

Description

3121308

Rl.-No. 1992/81

25.5-1981 / FE / PLI / Hz / Vt

ROBERO? BOSCH GMBH, 7000 Stuttgart 1

Procedure for television scanning of movies

State of the art

The invention is based on a method for television-like scanning of pilms after Genre of the claim.

The invention is based on the object of a simplification of the in the Ilnuptanmoldunp; described inventive method through the use of an, extended image memory « to reach.

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3121308

Class no. 1992 / 8.1

May 25, 1981 / FE / PLI / Rz / Vt

Advantages of the invention 'ft

The inventive method with the characteristic --J

features of the patent claim.> has the advantage that an expanded for the expansion of the digitized video signals by using a complete ■ · cinemascope film image receiving image ■ * memory further single memory, such as line memory can be saved. ·. '

drawing

An embodiment of the invention is shown in the drawing and in explained in more detail below.

In the circuit shown in the figure, the expansion of the digital video signal takes place in an image memory 65 which accommodates the complete Cinemascope film image. The chrominance signals picked up by the semiconductor sensors (not shown in the figure) R, G, B are in a matrix, also not shown, in the luminance signal Y and the two color difference signals R-Y and B-Y have been converted. The luminance signal Y as well as one of the two color signals R-Y / B-Y = C are the

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3121308

Rl.-No. 1992 / Hl ~? ~

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A / D converter 39 is supplied. The video signals Y, C digitized in the converter 39 are fed to the image memory 65, which is operated at the same clock frequency f ~ as the A / D converter 39 during writing. The reading out of the video signals from the image memory 65 takes place at a frequency f ^ = 1 / K _e · fp correspondingly reduced by the expansion factor K. The D / A converter 44 is also clocked with the frequency f ^. The analog video signal with components Y and G can then be removed from its output terminals 45 and 46.

The clock frequency sifp and f _Z) _ supplies a clock generator 42 which is synchronized with studio sync pulses S. The studio sync pulses S are applied to terminal 43. The clock generator 42 also supplies the clock signals required for reading from the semiconductor sensors with the frequency f * , which can be removed from terminal 47, as well as the H-pulses EL, which are also required for the operation of the semiconductor sensors, which can be removed from terminal 48.

The image section is shifted by selecting the image points in the image memory 65 by means of a signal emitted by the position shift circuit 49, which is changed by manual or automatic setting of an actuator can be.

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Claims (1)

3121308 Rl.-No. 1992/81 25.5-1981 FE / PLl / Rz / Vt ROBERT BOSCH GMBH. 7000 Stuttgart! claim Process for the television-like scanning of films of the so-called Cinemascope format, in which the images are recorded in the horizontal direction compressed by a factor of 2 with the help of line or area sensors on which the entire width of the film image is mapped, whereby to avoid image informationless Stripes on the upper and / or lower edge of the screen when the film is played back on television, the video signal is expanded by a corresponding clocking of storage means and the beginning and thus the end of the Auslerjevorgangs is automatically shifted according to the television standard _; according to patent application P 31 15 3G> 7, characterized in that the video signals supplied by the sensors are digitized, —2— 3121308 Rl.-Kr. 1992/81 -2- then into a correspondingly clocked, das Capture full Cinemascope film image Image memory (65) are written in and with a reduced by the expansion factor (K) Clock frequency (f. L / K) can be read out again after shifting the start of reading.