| 摘要 |
A tuner demodulation circuit is provided to filter a high frequency component of an outputted image signal through a low pass filter when buffering an image signal, outputted from a demodulation IC(Integrated Circuit) for demodulating an inputted IF(Intermediate Frequency) signal, through an image buffer circuit and outputting the buffered image signal, thereby improving frequency characteristics of the outputted image signal and accordingly improving ringing of a screen. A tuner demodulation circuit comprises the followings: a filter(21) for passing only band-pass signal among inputted IF(Intermediate Frequency) signals; a demodulation IC(Integrated Circuit)(22) which demodulates IF signals from the filter and outputs an image signal; an image buffer circuit(23) which buffers the image signal outputted from the demodulation IC and outputs the buffered image signal; and a low-pass filter(24) for filtering a high frequency components of the image signal outputted from the image buffer circuit.
|
