H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/34
H04N 7/08 (2006.01) H04N 11/24 (2006.01)
Patent
CA 2000709
COMPATIBLE EXTENDED-DEFINITION TELEVISION ABSTRACT OF THE DISCLOSURE A wide-aspect-ratio television signal is encoded for transmission within a standard-television-signal-compatible format is encoded by dividing the television signal into center-panel segments from which the horizontally central portion of a television picture produced from said wide-aspect-ratio television signal is displayed in accordance with a standard-television-signal aspect ratio and side panel segments from which the left and right side portions of the television picture produced from said wide-aspect-ratio television signal are displayed in accordance with the wide aspect ratio; arranging the center panel segments for transmission in the standard-television-signal-compatible format; reducing the spatial frequency extent of at least a portion of said side-panel segments by vertically expanding said portion; and inserting said vertically expanded portion of the side-panel segments for transmission during transmission of said center-panel segments in a manner that enables said inserted portion of the side panel segments to be separated from the center panel segments. The center panel segments are transmitted in a temporal-vertical-frequency domain that includes Fukinuki holes; and the vertically expanded portion is inserted within said Fukinuki holes. The signal is further encoded by producing an augmentation signal from the side panel segments which includes side-panel chrominance information and low-horizontal-frequency and low-vertical-frequency side-panel luminance information; modulating the side-panel chrominance information of said augmentation signal within a predetermined frequency band that does not overlap said low-horizontal-frequency and low-vertical-frequency side-panel luminance information; and inserting said modulated augmentation signal within the vertical blanking interval for transmission.
Katznelson Ron D.
Krause Edward Anthony
General Instrument Corporation
Smart & Biggar
LandOfFree
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