Television synchronous receiver

Details Television synchronous receiver Television synchronous receiver

1982-05-19

1984-07-17

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455165, 329 50, 3581931, 3581951, H03J 702, H04N 550

Patent

active

044610351

ABSTRACT:
A television synchronous receiver is arranged to maintain a 90.degree. phase difference in the broad frequency band of a TV broadcast between a local oscillator signal and another local oscillator signal. This allows a pair of synchronous detectors to detect the in phase components and quadrature components of a received television broadcast signal. A Costas loop is utilized in the generation of the 90.degree. phase difference.

REFERENCES:
patent: 4091410 (1978-05-01), Citta
patent: 4163259 (1979-07-01), Skerlos
patent: 4271434 (1981-06-01), Sakamoto
patent: 4322751 (1982-03-01), Hongu et al.

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