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
Electronic device with embedded antenna
Apparatus and method for transmitting/receiving data in a communication system
Catalysts and process for producing aldehydes
Roll of continuous web of optical film laminate and production method therefor
Location estimation of wireless terminals through pattern matching of deduced signal strengths
Tread portion of an automobile tire
Thwarting keyloggers using proxies
  Randomly Featured Patents
Apparatus, method, and program for transferring structured documents including plurality of document elements
Electrical connector keying arrangement
Polyvinyl butyral sheet roughness control
Secure personalization of memory-based electronic devices
Process for preparing 7-trialkylsilyl baccatin III
Line release on trolling device
Content switch for enhancing directory assistance
Information apparatus with phone function, ring history processing method and program
Vertical shaft system for gyroscopic theodolites with two degrees of freedom
Gas turbine with protective sheath for a probe and method for protecting an instrument lead which is laid in a protective sheath