Method and system for picture-correct transfer of motion picture film scenes to magnetic tape
First Claim
1. Method for recording motion picture film frames representing scenes on television recording tape, utilizing a telecine forming a motion picture video scanner (3), a video tape recording apparatus (5) to record video scenes in accordance with television transmission standards operating at 60 fields per second, and a central process computer (1);
- comprisinggenerating a sequence of pulses (FIG. 1;
graph c) in the telecine which have a frequency which is characteristic for the scanning repetition frequency at all occurring motion picture film speeds and which corresponds to the lowest common denominator of the frame repetition frequency of the motion picture film speed and the field repetition frequency of the video standard, respectively,transferring said pulses to the central process computer (1); and
jointly controlling by said process computer (1), the telecine (3) with respect to the video tape recording apparatus (5) to operate the video scanner (3) to scan a selected frame of the film at a time when the selected frame of the film is before the scanner and, simultaneously and based on the generated sequence of pulses, controlling recording on the recording tape by the video tape recording apparatus (5).
1 Assignment
0 Petitions
Accused Products
Abstract
To record motion picture film scenes, for example recorded at 24 frames per second, a television recording medium, such as magnetic tape, in accordance with the NTSC standard of 30 frames--60 fields--per second, a sequence of pulses (FIG. 1: graph c) are generated, for example in a motion picture film scanner (3), which pulses have a frequency which is characteristic for the scanning repetion frequency at any film frame repetition rate--for exaple 24 frames per second; a motion picture film scanner (3) and a video recorder (5) are jointly controlled by the central process computer and controller to operate the video scanner to scan the film at the time when a selected frame of the film is before the scanner and, simultaneously and based on a sequence of generated pulses, controlling recording of the film on the record medium by the recording apparatus. A transfer switch may be used, connected to a monitor (11), to selectively display either the scanned scene or the recorded scene.
113 Citations
8 Claims
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1. Method for recording motion picture film frames representing scenes on television recording tape, utilizing a telecine forming a motion picture video scanner (3), a video tape recording apparatus (5) to record video scenes in accordance with television transmission standards operating at 60 fields per second, and a central process computer (1);
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comprising generating a sequence of pulses (FIG. 1;
graph c) in the telecine which have a frequency which is characteristic for the scanning repetition frequency at all occurring motion picture film speeds and which corresponds to the lowest common denominator of the frame repetition frequency of the motion picture film speed and the field repetition frequency of the video standard, respectively,transferring said pulses to the central process computer (1); and jointly controlling by said process computer (1), the telecine (3) with respect to the video tape recording apparatus (5) to operate the video scanner (3) to scan a selected frame of the film at a time when the selected frame of the film is before the scanner and, simultaneously and based on the generated sequence of pulses, controlling recording on the recording tape by the video tape recording apparatus (5). - View Dependent Claims (2)
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3. System for picture-correct transfer of motion picture film scenes on a television recording tape in a television system operating at 60 fields per sercond comprising
a central process computer and common controller (1); -
a telecine forming a motion picture film scanner (3); a video tape recording apparatus (5); a machine control interface (2) coupled to the telecine (3) and a second machine control interface (4) coupled to the video magnetic tape recording apparatus (5); means (7) coupling the telecine (3) to the video tape recording apparatus (5) for transmission of video signals from the telecine to the video tape recording apparatus (5); said telecine generating a sequence of pulses (FIG. 1;
graph c) which have a frequency which is characteristic for the scanning repetition frequency at all occurring film speeds;means (12) for transmitting the generated sequence of pulses from the telecine to the central process computer and common controller (a); and connection means from the central process computer and controller (1) both to the telecine (3) and the video tape recording apparatus (5), with the respective machine control interface (2) interposed, to control operation of the telecine (3) to scan the film at a time when a selected frame of the film is before a scanner of the telecine and, simultaneously, and based on said generated sequence of pulses, controlling operation of said video tape recording apparatus (5) to record information on the recording tape. - View Dependent Claims (4, 5)
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6. Method for the picture-correct transfer of motion picture film scenes to magnetic tape, utilizing a telecine (3) and a video tape recorder (5) to record film scenes in accordance with television transmission standards operating at 60 fields per second,
comprising generating a sequence of pulses (FIG. 1: - graph c) in the telecine which have a frequency which is characteristic for the scanning repetition frequency at all occurring film speeds;
transferring the sequence of pulses from the telecine (3) to a common control means (1); and controlling, by the common control means (1), the telecine (3) relative to the video tape recorder (5), based on said sequence of pulses, in such a way that the relative position of the film picture selected for the transfer, as related to the pulse sequence (FIG. 1;
graph c) is such that the field calculated based on said sequence, and on the film, will be recorded on the magnetic tape in accordance with television transmission standards. - View Dependent Claims (7, 8)
- graph c) in the telecine which have a frequency which is characteristic for the scanning repetition frequency at all occurring film speeds;
Specification