A method for covering and revealing a translated caption in a video reproducing apparatus, which includes a key input circuit for operating control keys selected by a user, a microcomputer coupled to the key input circuit for controlling the apparatus in response to a selected key input, an OSD processor...http://www.google.com.au/patents/US5486872?utm_source=gb-gplus-sharePatent US5486872 - Method and apparatus for covering and revealing the display of captions
