Line standard conversion circuit for a television signal

Details Line standard conversion circuit for a television signal Line standard conversion circuit for a television signal

1982-09-10

1985-01-08

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 942

Patent

active

044929765

ABSTRACT:
A television receiving system for converting a video signal of one line standard to a video signal of another line standard. A field delay circuit is provided which separates the video signal of the one line standard into a high frequency and low frequency portion. The low frequency portion of the signal is processed to have a delay during one field different from the delay of a subsequent field. Independent processing means for the high frequency portion of the separated signal is provided. The processed high frequency and low frequency signals are combined to provide a video signal for converting to a different line standard. By processing the high frequency and low frequency portions of the video signal differently, a savings in hardware components is realized without material degradation in performance.

REFERENCES:
patent: 4057835 (1977-11-01), Kinuhata et al.
patent: 4322750 (1982-03-01), Lord et al.
Kinuhata et al., "A Digital Standards-Converter for TV Using Intra-Frame Line Interpolation Techniques", Intern. Conf. on Comm., Jun. 17-19, 1974, IEEE.

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