Ghost signal elimination circuit

DETAILED DESCRIPTION It is an object of the present invention to provide a greatly improved device and circuit to eliminate ghost signals from a received, incoming signal.
It is an object also of the invention to accomplish the elimination of unwanted signals from a composite signal with hardware combinations not found in the prior art in order to perform this function more effectively and at a substantial saving in cost.
An unwanted signal elimination circuit constructed and arranged in accordance with the present invention is uniquely adapted to function most effectively in eliminating ghosts in a television system, but it will become apparent as the description unfolds that the circuit of the invention is adaptable readily to eliminate unwanted signals in other devices, such as radios.
In its presently preferrred embodiment, the circuit of the invention has an autocorrelator circuit which operates in conjunction with a microcomputer in order to function effectively.
A composite, received signal is connected serially into a data shift register for comparison with a delayed signal that has been processed by the microcomputer.
The comparison is performed in an AND gate circuit such that an output is developed only when there is correlation between the portion of the composite signal that is wanted and the delayed and processed signal.
A suitable data processor circuit is connected to generate the controls needed, as will be described presently.