An on-screen display circuit of the interlaced scanning type comprising a vertical counter for counting a horizontal synchronous signal inputted thereto and outputting the counted values as higher-order bits of a vertical address, a 1-bit counter for counting a vertical synchronous signal inputted thereto...http://www.google.de/patents/US5486842?utm_source=gb-gplus-sharePatent US5486842 - On-screen display circuit of the interlaced scanning type
