High definition television video signal receiver and processing

Details High definition television video signal receiver and processing High definition television video signal receiver and processing

1991-04-16

1993-04-06

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358141, 358188, 358160, 358 21R, H04N 978, H04N 964

Patent

active

052008118

ABSTRACT:
A method for receiving a high definition television signal has been used by the band-splitting and sub-sampling method. The concrete embodiment for the method can be accomplished by converting the received radio frequency signal into a first intermediate frequency signal, and by splitting a second intermediate frequency signal and a narrow band intermediate frequency signal therefrom. The narrow band intermediate frequency signal is lacked a given fixed frequency to demodulate the second intermediate frequency signal in a quadrature phase-shift technique. The demodulated signal is low-pass filtered and converted into a digital signal to separate into a synchronizing, an audio signal, a control signal therefrom. The digital signal is processed at high frequency band according to the control signal, and delayed a given time. The delayed signal is added to the signal processed at high frequency band. The added signal is separated into a luminance and chrominance signals to convert into an analog signals.

REFERENCES:
patent: 4658285 (1987-04-01), Lewis, Jr.
patent: 4672445 (1987-06-01), Casey et al.
patent: 4885637 (1989-12-01), Fukinuki et al.

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