Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-02-28
1986-01-14
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 12, H04N 1120, H04N 1106
Patent
active
045648573
ABSTRACT:
A television system having a fully compatible high-definition signal with extended aspect ratio information receivable at conventional resolution by conventional TV receivers without auxiliary apparatus with one TV channel carrying the conventional TV signal while high-frequency luminance and chrominance information plus extended aspect ratio information are provided in a second TV channel. The extended aspect ratio information including luminance and chrominance information is transmitted during the horizontal retrace interval of the second TV channel. The extended aspect ratio chrominance information comprises I.sub.e and Q.sub.e segments which are transmitted during alternate horizontal retrace intervals. Since the segments are alternately transmitted, a storage mechanism is provided so that a segment received during a previous horizontal retrace interval can be reused during the present horizontal retrace interval for displaying the complete chrominance edge information.
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LoCicero Joseph L.
Pazarci Melih
Rzeszewski Theodore S.
AT&T Bell Laboratories
Dunnam Michael P.
Groody James J.
Moran John C.
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