Television – Synchronization – Phase locking regenerated subcarrier to color burst
Patent
1992-11-12
1994-05-10
Groody, James J.
Television
Synchronization
Phase locking regenerated subcarrier to color burst
348500, 348713, 348708, H04N 1120, H04N 701
Patent
active
053112962
ABSTRACT:
A state memory circuit responsive to a selection signal indicative of either the first television system or the second television system selected according to an external setting operation and adapted to be set to a logical "1" or "0" state when the selection signal indicates that the first television system is selected, the state of the state memory circuit being alternated between "1" and "0" for every signal according to the burst flag pulse when the selection signal selects the second television system, and a timing circuit for outputting the state of the state memory circuit at a timing before a leading edge of the burst flag pulse or after a trailing edge of the burst flag pulse and responds to an even number of burst signals in one frame and generates a color video signal suitable to the first or the second television system according to the selection signal.
REFERENCES:
patent: 4263608 (1981-04-01), Hinn
patent: 4688082 (1987-08-01), Kato
Ikefuji Yoshihiro
Murakami Sadakazu
Burgess Glenton B.
Groody James J.
Rohm & Co., Ltd.
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