Parallel sound if with reference carrier derived from quasi-sync

Details Parallel sound if with reference carrier derived from quasi-sync Parallel sound if with reference carrier derived from quasi-sync

1989-04-13

1990-11-27

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358174, H04N 560, H04N 552

Patent

active

049740873

ABSTRACT:
The present invention is for a low buzz television signal processing system. The picture signal is detected by a quasi-synchronous detector wherein the picture carrier is amplitude limited and video tank filtered for insertion into the video mixer for deriving the composite video signal. The sound channel comprises a single parallel resonant tuned circuit forming a bandpass filter with a passband centered at the sound carrier frequency. The modulated sound carrier is fed to a sound detector which is also fed the same filtered picture carrier signal provided by the video tank for providing the 4.5 MHz intercarrier sound signal.

REFERENCES:
patent: 4199787 (1980-04-01), Craft
patent: 4237485 (1980-12-01), Saito et al.
patent: 4263611 (1981-04-01), Gibson et al.
patent: 4353093 (1982-10-01), Durbin, Jr. et al.
patent: 4470070 (1984-09-01), Griffis
patent: 4513323 (1985-04-01), Patel
patent: 4514763 (1985-04-01), Rindal
patent: 4551756 (1985-11-01), Ogawa
patent: 4602288 (1986-07-01), Everett
patent: 4630119 (1986-12-01), Okuno
patent: 4639786 (1987-01-01), Tamer et al.
patent: 4660088 (1987-04-01), Lagoni et al.
patent: 4692803 (1987-09-01), Tobita
patent: 4716464 (1987-12-01), Parker
patent: 4718086 (1988-01-01), Rumreich et al.
patent: 4742293 (1988-05-01), Sugai
Television Gijutsu Issue of Sep. 1985, pp. 49-55, along with English language translation.

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