Device for conversion of frame frequency and number of lines for

Details Device for conversion of frame frequency and number of lines for Device for conversion of frame frequency and number of lines for

1990-08-20

1992-08-11

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358160, H04N 701

Patent

active

051384485

ABSTRACT:
A device for conversion of frame frequency and number of lines for a high-definition television receiver which receives input video signals corresponding to different standards and to output a high-definition signal at a desired frame frequency and with the desired number of lines. The device uses a pass-band reduction decoder processing the high-definition input 625/2:1/50 Hz video signals. It includes: a memory, a decoder, and a processing circuit. The memory stores the input video signal frames at a frequency which is a function of the frame frequency of the input signal. This memory is read at the frame frequency desired at the output. The decoder is a pass-band reduction decoder connected to the memory and gives separately at its outputs even and odd frames, respectively, of a decompressed high-definition video signal output at the frame frequency desired. The video processing circuit is connected to the outputs of the pass-band reduction decoder and delivers a display video signal at the required frame frequency and number of lines.

REFERENCES:
patent: 4739405 (1988-04-01), Sumida
patent: 4956707 (1990-09-01), Oakley et al.
patent: 4956708 (1990-09-01), Itagaki
patent: 4979041 (1990-12-01), Schreiber
IEEE 1989 Int'l Conference . . . Jun. 1989, D Gillies.

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