Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and device for comparing two variable analogue signals










Image Number 3 for United States Patent #5305243.

A device compares two variable analogue signals, e.g. varying in time, such as audio or video signals. The signals, which are either different or identical but shifted in time, are within a predetermined frequency range. The device includes two parallel channels for processing analogue signals. One of the channels introduces a time shift of one signal with respect to the other, the shift being equal to a 1/4 period at the center frequency of the band. Both channels include in series circuits for transforming the analogue signals into binary logic signals, a logic circuit, a summing circuit for establishing a first and second correlation signal. An adder adds the absolute values of the first and second correlation signals to form a third correlation signal that is substantially independent of any time shift between the analogue signals.








 
 
  Recently Added Patents
Front portion of a vehicle, toy, and/or replicas thereof
Turbulence sensor and blade condition sensor system
Portable computer display structures
Cathode active material and lithium secondary battery comprising the same
Method for forming contact hole
Method and apparatus for content-aware resizing of data chunks for replication
Protocol delay measuring device and protocol delay measuring method
  Randomly Featured Patents
Semiconductor flip-chip package and method for the fabrication thereof
Remote current sensing and communication over single pair of power feed wires
Hiding search box based on search provider settings
Pneumatic impact wrench
Method and system for designing a power converter
Method and installation for spraying a multi-layer insulating refractory coating, and the coating thus obtained
Lehr loader
Method for electronic data and signature collection, and system
Method and system for transferring digitized representations of documents via computer network transfer protocols
Water goggle