| 摘要 |
In order to correct a scanning pattern, in particular as regards convergence, correction values for the crossing points in the scanning pattern are stored in a memory. The aim of the invention is to provide a simple circuit for interpolation between two correction values, which can be adapted in particular to different numbers of lines (N). A delta voltage (x) is generated for interpolation from one correction value (K1) to the next (K2) by means of a simple digital circuit comprising an adder (2), a register (3) and a D/A converter (8). The circuit is particularly suitable for convergence correction in a rear-projection TV set. |
