Television – Basic receiver with additional function – Multimode
Patent
1996-02-14
1999-04-27
Peng, John K.
Television
Basic receiver with additional function
Multimode
348555, 348556, 348705, 348706, H04N 327, H04N 546
Patent
active
058984631
ABSTRACT:
The present invention provides an image display apparatus equipped with a common terminal section 10 to which a single-density signal and a double-density signal each having different horizontal scanning frequencies to each other are commonly connected. The single-density and double-density signals are selectively inputted to the single-density signal processing circuit 5 or the double-density signal processing circuit 6 by a switching operation of a switch 11. A synch-signal separation circuit 13 separates a synchronous signal carrying the horizontal scanning frequency from the signal inputted to the common terminal section 10. An fV-conversion circuit 14 converts a horizontal scanning frequency of the synchronous signal into a voltage. A frequency discrimination circuit 15 detects the horizontal scanning frequency and memorize it in a look-up table of a memory device 16. A control circuit 17 controls switching operations of the switches 7, 11 on the basis of the horizontal scanning frequencies of the signals memorized in the look-up table of the memory device 16.
REFERENCES:
patent: 4414571 (1983-11-01), Kureha et al.
patent: 4426661 (1984-01-01), Okada et al.
patent: 5018013 (1991-05-01), Rabbi
patent: 5041910 (1991-08-01), Suda et al.
patent: 5132793 (1992-07-01), Hirahata et al.
patent: 5257106 (1993-10-01), Maruoka
patent: 5361099 (1994-11-01), Kim
patent: 5420641 (1995-05-01), Tsuchida
patent: 5475442 (1995-12-01), Matsushita et al.
patent: 5663768 (1997-09-01), Yang
patent: 5703657 (1997-12-01), Maruoka et al.
Lo Linus H.
Meller Michael N.
Peng John K.
Victor Company of Japan Ltd.
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