Television – Image signal processing circuitry specific to television – Switching
Patent
1995-02-03
1997-05-06
Lee, Michael
Television
Image signal processing circuitry specific to television
Switching
348718, 348558, H04N 5268
Patent
active
056276028
ABSTRACT:
A video signal processing apparatus processes plural kinds of video signals and is used for displaying each one of the processed outputs of the plural kinds of video signals on the same screen. In the video signal processing apparatus, a memory used for a subtitle processing circuit and a memory used for a helper signal separation circuit are used in common by providing a switching means to switch according to an input video signal. A subtitle processing circuit magnifies a video signal with a letter box format such that a horizontally long picture is inserted in a picture with a 4:3 aspect ratio on a horizontally long screen with 2:1 or 16:9 aspect ratio. The helper signal separation circuit is used for receiving a television signal such as an EDTV 2 system which has a helper signal to improve picture quality.
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European Search Report No. 95300651.7, dated Sep. 28, 1995.
Translation of "Multidimensional Signal Processing of Television Image", Toshihiko Fukinuke, Daily Industry Press Co., Fig. 4. 14, p. 137.
Izawa Yosuke
Nio Yutaka
Lee Michael
Matsushita Electric - Industrial Co., Ltd.
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