Digital circuit for synchronizing a pulse train

Details Digital circuit for synchronizing a pulse train Digital circuit for synchronizing a pulse train

1984-03-23

1986-03-25

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 17, 358150, 328 63, 328133, 328139, 328179, 324 83R, 324 83D, 307269, H04N 504, H04N 512, H03L 700

Patent

active

045787050

ABSTRACT:
A digital synchronization operation circuit synchronizes a pulse train with horizontal synchronizing pulses contained in a received standard television signal which, after being demodulated in the television receiver, is present as the composite color signal and which is fed to an analog-to-digital converter clocked by a clock signal. The digital synchronization separation circuit has an improved phase resolution such that the phase resolution is greater than the resolution provided by the pulse width of clocking signals.

REFERENCES:
patent: 4454531 (1984-06-01), Elmis et al.
patent: 4471299 (1984-09-01), Elmis
patent: 4489342 (1984-12-01), Collinger et al.

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