Casio Computer Co., Ltd.

Kazuyuki Odachi

Masao Kawamura

Takahiro Fuse

Koji Yamagishi

Haruo Ono

Masaharu Kizaki

A television video signal A/D converter apparatus in a liquid crystal television receiver has an A/D converter for A/D converting a television video signal. Upper and lower reference potentials for determining an operating voltage amplitude are supplied to the A/D converter from a reference potential generator. The upper and lower reference potentials are divided at a given ratio by a resistor so as to fix an average potential of the television video signal at a constant value using the potential at the dividing point as a bias potential, and thereafter the television video signal is supplied to the A/D converter.

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Tokorozawa, Japan

Kazuyuki Odachi