Abstract: A co-channel interference canceler having a co-channel interference rejection filter and a driving method therefor are provided. The co-channel interference canceler is driven for removing co-channel interference of an NTSC signal existing in a co-channel on receiving of an HDTV signal. In doing so, an error rate of a direct signal path which does not pass the rejection filter and an error rate of a signal path passed through the rejection filter are compared. That is, the error rates, obtained for a predetermined period for each path, are compared using a reference signal, to output a driving signal for selecting the path having the smaller error rate. The error rate is obtained by integrating the number of symbol errors between the reference signal and each path signal. Therefore, the driving of the co-channel interference canceler is controlled according to the driving signal based on the error rate, thereby giving simple circuit structure and increased reliability.

Abstract: A digital deflection control system in a projection TV is provided which digitally integrates the configuration for converting the digital horizontal deflection signal outputted from the DCS into an analog signal to be applied to the deflection coil as an input, thereby reducing the production cost and realizing small-size product.