Patent ID: 6288758
Filing Date: 2001-09-11
Classification: H04N

Abstract:
A digital convergence correction device, in which a convergence correction signal is generated in accordance with correction data, comprising:a memory for preliminarily obtaining a convergence correction amount at each convergence correction point which corresponds to a position on a screen in a relation of 1 to 1, and storing and holding a variation in each convergence correction amount with respect to an adjacent convergence correction point as correction data;an address counter for generating an address read out with respect to the memory synchronously with screen scanning;a gate circuit for controlling an output time to be constant with respect to each of the correction data read out;a digital/analog converter circuit for integrating the correction data from the gate circuit, and generating and outputting an analog signal; anda low-pass filter for smoothing the analog signal and generating a convergence correction signal.