Patent ID: 6042014
Filing Date: 2000-03-28
Classification: G06K

Abstract:
Apparatus for playing back an audio and/or video signal in the form of a recording on magnetic strip laid down on a support, a succession of timing marks spaced along said strip being associated with this recording, which timing marks define recording blocks between successive marks and a predetermined time interval T for playing back each of said blocks, including:read means which are manually movable with respect to said magnetic strip for reading said recording and said succession of timing marks and generating a first read signal of said recording and a second periodic read signal of said succession of marks;a memory periodically write controlled in a first stage for storing an ordered succession of samples of said first signal, and periodically read controlled in a second subsequent stage for reading said stored samples in an order correlated with that of writing;reproduction means connected to said memory for receiving said signal samples, read from said memory and for converting them into an acoustic and/or video signal; andtiming and control means connected to said read means for receiving said second read signal, and connected to said memory for writing said memory during said first stage, for reading said memory during said second stage and for variably controlling, in time and as a function of said second periodic signal, one of the two following frequencies:A) the frequency of said periodic writing to memory,B) the frequency of said periodic reading of the memory in such a way that, in A), a number of samples representing a recording block is stored during a period of said second signal and, in B), a number of samples representing a recording block is read during said predetermined time interval T.