Method for a compatible increase in resolution in television sys

Details Method for a compatible increase in resolution in television sys Method for a compatible increase in resolution in television sys

1980-09-19

1982-12-14

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 502

Patent

active

043640907

ABSTRACT:
Band limited standard video signals are sampled with line coupled sampling clock pulses. The sampling clock pulses are shifted from field to field by one-half a sampling interval. The sampling clock pulse rate is twice the frequency at the center of the Nyquist edge of the transmission channel. The received signal is sampled in synchronism, line coupled and offset from field to field. A video memory records the sampled values and furnishes them to the monitor at twice the sampling frequency and without flicker as a full frame. The video playback takes place at twice the line frequency or alternatively with the same line frequency and synchronous spot wobbling.

REFERENCES:
Dill, "High Resolution NTSC Television System," IBM Technical Disclosure Bulletin, vol. 21, No. 5, Oct. 1978, pp. 2148-2153.

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