Video signal production from cinefilm originated material

Details Video signal production from cinefilm originated material Video signal production from cinefilm originated material

1991-01-16

1993-06-22

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 11, H04N 701, H04N 1120

Patent

active

052219666

ABSTRACT:
A system for converting an input television signal that contains field sequences corresponding to frames in cine film is provided. The input signal is converted into an intermediate television signal wherein there is a direct correlation between the field groups thereof and the original film frames. The intermediate signal is modified to produce and output television signal whose field rate is that of a desired television signal. For example, the input signal can be an NTSC signal produced in part from a 3:2 pull down technique, the intermediate signal may be characterized by 625 lines and 48 fields per second or characterized by 525 lines and 625 fields per second, and the output signal can be a PAL signal characterized by 625 lines and 50 fields per second. In each case, a 3:2 sequence of input signal fields (correlated with cine frames) results in pairs of fields in the output signal correlated with the cine frames. A television signal standards converter and a frame detector for use in the system are provided.

REFERENCES:
patent: 3882539 (1975-05-01), Faroudja
patent: 4275422 (1981-06-01), Le Couteur
patent: 4766484 (1988-08-01), Clayton et al.
patent: 4876596 (1989-10-01), Faroudjar
patent: 4935816 (1990-06-01), Faber
patent: 4998167 (1991-05-01), Jaqua

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