Wide-screen television receiver with aspect ratio conversion fun

Details Wide-screen television receiver with aspect ratio conversion fun Wide-screen television receiver with aspect ratio conversion fun

1992-05-22

1994-08-30

Groody, James J.

Television

Basic receiver with additional function

Multimode

348561, H04N 544, H04N 546

Patent

active

053432380

ABSTRACT:
A wide-screen television receiver capable of converting a TV signal of a non-aspect ratio into a signal of a wide aspect ratio which can be displayed on a wide screen of the wide aspect ratio and previously visually informing the user of what part of the image of the non-aspect ratio TV signal is converted in its aspect ratio and displayed on the wide screen. The receiver includes the interpolation scan speed conversion circuit, the mode setting circuit, the aspect ratio converting circuit, the wide cursor adding circuit and the wide display. The interpolation scan speed conversion circuit makes a series of processes such as Y/C separation and scan line interpolation for the input video signal supplied via the input terminal. The aspect ratio converting circuit compresses the video signal from the interpolation scan speed conversion circuit in the horizontal direction by use of a memory. The magnification processing circuit is provided after the aspect ratio converting circuit. This magnification processing circuit magnifies the horizontally compressed video signal so that an arbitrary part of image specified by the mode setting circuit can be magnified at given magnification powers in the horizontal and vertical direction. The wide screen display displays the magnified image of the video signal without horizontal and vertical distortions on the wide screen.

REFERENCES:
patent: 4528585 (1985-07-01), Bolger
patent: 5029006 (1991-07-01), Katsumata et al.
patent: 5107334 (1992-04-01), Matsumoto
patent: 5119082 (1992-06-01), Lumelsky et al.
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patent: 5243421 (1993-09-01), Nagata et al.
GB 2,251,755A, Jul. 1992, Richards.

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