Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-10-05
1986-08-12
Shepperd, John W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358313, H04N 1120, H04N 1122, H04N 980
Patent
active
046059512
ABSTRACT:
An apparatus for converting field video signals into frame video signals includes a modulation circuit for modulating a chrominance subcarrier with a color signal contained in a field video signal, a signal composing circuit for combining the modulated subcarrier with a luminance signal of the field video signal, and a signal converter circuit means for producing a frame video signal including interlaced fields with a time delay applied to alternative one of the fields of the output signals delivered from the signal composing circuit. The time delay is substantially equal in period to half a horizontal scanning time period. The apparatus further includes a signal generator responsive to a first signal which is substantially equal in frequency to the chrominance subcarrier for generating a second signal which is shifted in phase by substantially 90 degrees with respect to the first signal, and a changeover switch for alternately selecting the first and second signals for each field to supply the modulator circuit with either the first or second signal as the chrominance subcarrier.
REFERENCES:
patent: 3886589 (1975-05-01), Nasu
patent: 4152719 (1979-05-01), Kellar
patent: 4247865 (1981-01-01), Mastronardi
patent: 4298896 (1981-11-01), Heitmann
Fuji Photo Film Co. , Ltd.
Shepperd John W.
LandOfFree
Apparatus for converting field video signals into frame video si does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for converting field video signals into frame video si, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for converting field video signals into frame video si will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1947325