Metod och arrangemang för att synkronisera funktioner presenterade på skärm under analog mottagning

摘要

A method and an arrangement are disclosed for synchronising on-screen display functions during analog signal reception in a terminal arrangement that is capable of receiving both digital and analog video signals. There are provided means (312, 313) for generating on-screen display objects. Coupled to said means for generating on-screen display objects, there are synchronisation pulse generation means (314) for controlling the generation of on-screen display objects. Comparison means (322) are used for comparing synchronisation pulses generated by said synchronisation pulse generation means (314) with a synchronisation signal obtained (320) from an analog video signal. The result of said comparing as a controlling signal is conveyed (323, 324) to a process (314, 325) of generating said synchronisation pulses.