Television – Basic receiver with additional function – For display of additional information
Patent
1995-10-20
1997-05-06
Metjahic, Safet
Television
Basic receiver with additional function
For display of additional information
348565, 348556, 348513, H04N 545, H04N 5445
Patent
active
056275986
ABSTRACT:
A display apparatus wherein a video signal of a child picture read out at a double speed is inserted accurately with a high resolution into a parent picture of another video signal having a double frequency. Control signals for designating a write area and a read-out area of a four field sequence memory provided for forming a double speed field frequency is formed in accordance with odd/even number field discrimination signals for write and read-out video signals, a vertical synchronizing signal prior to double speed conversion and a double speed synchronizing signal for a parent picture so that, even when the parent picture is scrolled, passing of the read-out side memory area does not take place. Where the parent picture is formed from a video signal of the interlace system by a line double speed, the double speed child picture video signal is delayed, upon reading out in an even-numbered field, by one horizontal scanning period so that lines may be overlapped between the parent and child pictures.
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Maioli Jay H.
Metjahic Safet
Sony Corporation
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