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
Multi-band dipole antenna
Promoting content
Method for delivering a volatile material
Semiconductor apparatus
Method and system for providing complete internet anywhere with partial server processing
Managing method and apparatus for servicing contents provided by content provider
Headset, terminal, and method capable of switching headset mode
  Randomly Featured Patents
Apparatus and method for increasing the bandwidth to a graphics subsystem
Coating apparatus for semiconductor process
Turbomolecular pump
Systems and methods for analysis and design of radiating and scattering objects
Fuel cell system
Ring-opening metathesis polymerization of bridged bicyclic and polycyclic olefins containing two or more heteroatoms
Pneumatic tire tread and buttress
Control loop for switching power converters
Electronic typewriter
Methods and apparatus for supplying oil to bearing assemblies