Television receiver for displaying two pictures of similar or different aspect ratios simultaneously
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United States of America Patent
Stats
-
Apr 2, 1996
Grant Date -
N/A
app pub date -
Dec 22, 1994
filing date -
Dec 24, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display is to be produced based on video signals having aspect ratios of 4:3 and 16:9. Controller 21 turns on switches SW1 and SW2 so that the digitalized video signal of the first picture is compressed at a rate of 3/8 in the time axis. Simultaneously, the video signal of the second picture is converted digitally, written into memory 14 in synchronization with the first picture video signal, read out based on a delay of 3H/8 from the synchronization with the first picture video signal, and sent to a digital processing circuit 13. The controller 21 controls the digital processing circuit 13 so as to compress in the time axis the video signal of the second picture at a compressing rate of 5/8. Also, the controller 21 controls a vertical amplitude switching signal generator 19 to adjust a vertical deflecting current in a deflecting circuit 18 based on an operation by the audience.
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