Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for detection of edge position thickness or splice position of a material web










Image Number 5 for United States Patent #5583828.

A series of pulses of ultrasonic wave emitted from the transmitter with a specified period are received by the receiver. The received signals are rectified to a smooth wave with a single peak. The occurrence time of the peak is determined to gain and store the peak value, which corresponds to the edge position, thickness or splice position of the web. Alternatively, the transmitter emits a series of pulses of ultrasonic wave with a specified period and the peak value in the signals received by the receiver is once held in the peak-holding circuit. The peak voltage held is discharged and reduced with the discharge device and smoothing of the charged voltage yields its mean value, which corresponds to the edge position, thickness or splice position of the web.








 
 
  Recently Added Patents
Dynamic bar oriented user interface
Multi-room user interface
Lid for a container
System and method for managing investment funds
Light powered hearing aid
Method and apparatus for controlling the use of data stored on a media sample
Converter and measuring apparatus
  Randomly Featured Patents
Processing photographic material
Metal-gate CMOS device and fabrication method thereof
Semiconductor integrated circuit, control method, and information processing apparatus
Combined beer light and key holder
Contact structure between two conductive layers in semiconductor device and method of manufacturing the same
Cable tie
Integrated circuit for chip op/amp interface
Socket for electrical parts
Rotary electric machine for vehicles
Video disc player with compensation for stylus holder mechanical resonance