Video signal conversion method for displaying a 4:3 video signal

Details Video signal conversion method for displaying a 4:3 video signal Video signal conversion method for displaying a 4:3 video signal

1995-02-23

1996-04-09

Groody, James J.

Television

Format conversion

Conversion between standards with different aspect ratios

348913, H04N 701

Patent

active

055066259

ABSTRACT:
The present invention provides a video signal conversion method for displaying a video signal having a 4:3 aspect ratio on a screen having a 16:9 aspect ratio by using a single clock. The video signal conversion comprises the steps of inserting two zero pixels between two pixels of the 4:3 video signal, band pass filtering the two pixels of the 4:3 video signal, such that 3/4 of the bandwidth of the pixels is passed and upper and lower parts of pixels are not passed, and sampling the filtered pixels by every fourth transition of a clock signal, and then displaying the sampled pixels on the 16:9 screen.

REFERENCES:
patent: 5243421 (1993-09-01), Nagata et al.
patent: 5323235 (1994-06-01), Tonomura et al.
patent: 5347313 (1994-09-01), Choi
patent: 5386236 (1995-01-01), Hong

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