Television – Image signal processing circuitry specific to television – Special effects
Patent
1997-07-25
1999-09-14
Hsia, Sherrie
Television
Image signal processing circuitry specific to television
Special effects
348561, 348704, H04N 974, H04N 3223
Patent
active
059530758
ABSTRACT:
The present invention relates to a video signal processing apparatus for converting video signals based on a desired transmission system such as NTSC, PAL, MUSE or any other system so as to conform to a display unit of a desired screen system such as XGA, VGA or the like. The apparatus has a feature that it is provided with a PLL circuit for changing a sampling frequency used by an analog-to-digital converter for converting inputted video signals into digital signals in accordance with the sort of the transmission system of the video signals, and a controller for controlling picture element interpolation of the digital signals performed by a picture image magnifying circuit for magnifying the video signals horizontally and vertically, in accordance with the sort of the transmission system of the video signals.
REFERENCES:
patent: 5715013 (1998-02-01), Kang
"Television Gijutsu Kyokasho (Television Technology Textbook)", first volume, edited by Japan Broadcasting Corp., pp. 31-91 and pp. 277-281.
"MUSE--Hi-Vision Transmission System" edited by Institute of Electronics, Information and Communication Engineers of Japan, pp. 1-8.
SID 96 Digest, vol. 27, May 12, 1996 entitled "Late-News Paper: Development of 13.3-in. Super TFT-LCD Monitor" by N. Kasai et al., pp. 414-417.
Hasegawa Ryo
Matono Takaaki
Nagata Tatsuo
Sakai Takeshi
Sudo Koichi
Hitachi , Ltd.
Hitachi Video and Information System Inc.
Hsia Sherrie
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