Digital processing of video signals for performing aspect ratio

Details Digital processing of video signals for performing aspect ratio Digital processing of video signals for performing aspect ratio

1997-12-08

1999-01-05

Kostak, Victor R.

Television

Format conversion

Conversion between standards with different aspect ratios

348441, 348333, H04N 701

Patent

active

058568492

ABSTRACT:
Aspect ratio converting circuits store a digital signal at a first clock rate into a memory, wherein the digital signal represents a picture having a first aspect ratio. In the first mode, the digital signal is retrieved from the memory during one horizontal period on the basis of the first clock rate. In the second mode, in one horizontal period, a portion of the digital signal is retrieved on the basis of a second clock rate related to a conversion ratio between the first aspect ratio and a second aspect ratio of the picture.

REFERENCES:
patent: 5177609 (1993-01-01), Kawakami et al.
patent: 5331346 (1994-07-01), Shields et al.
patent: 5444492 (1995-08-01), Kihara
patent: 5459520 (1995-10-01), Sasaki
patent: 5655356 (1997-08-01), Asaida et al.
patent: 5715010 (1998-02-01), Izawa et al.
patent: 5719633 (1998-02-01), Nishio et al.

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