H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/46 (2006.01) G09G 5/00 (2006.01) H04N 7/01 (2006.01) H04N 5/44 (2006.01)
Patent
CA 2317790
When an image having an aspect ratio of 16:9 is compressed in a vertical direction to be displayed on a display screen having an aspect ratio of 4:3, a gray scale signal is inserted into a top and a bottom of an image signal and a brightness level of the inserted gray scale signal is made to correspond to an average brightness level of the image signal. In addition, when an image having an aspect ratio of 4:3 is compressed in a horizontal direction to be displayed on a display screen having an aspect ratio of 16:9, a gray scale signal is inserted into a right edge and a left edge of an image signal and a brightness level of the inserted gray scale signal is made to correspond to an average brightness level of the image signal. Accordingly, a boundary line between a video image area and a non-video image area due to the difference in luminous characteristics of phosphors becomes hardly recognizable.
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
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