Audio-video data carrier, e.g. film, position determining device, e.g. for use in radio, has synchronizer to compare search window with sequence of sample values of read layer based on higher sample rate, in order to receive fine result

摘要

The device has a memory (420) for storing film information, which is applied on a film (110) in a temporal sequence. A time scale is assigned to the information. A receiver (440) receives a layer that is read by the film. A synchronizer (460) compares a search window of the stored film information with a sequence of sample values of the read layer based on a smaller sample rate, in order to receive a rough result. The synchronizer compares another window with another sequence based on a higher rate, in order to receive a fine result, which refers to the position of the film. Independent claims are also included for: (1) a method of determining a position in a film; and (2) a computer program with a program code for executing a method of determining a position in a film.