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
Digital photographing apparatus and control method for evaluating validity of an auto-focus operation
Printing apparatus having extendable functionality and method thereof
Synchronization of web applications and media
Fixing apparatus
Metal colloidal particles, metal colloid and use of metal colloid
Mobile communication method, mobile station, and network device
Methods for selective reverse mask planarization and interconnect structures formed thereby
  Randomly Featured Patents
Resilient seal for curved flapper valve
Solid detergent and chemical dispenser
Ultraviolet light stable polymeric compositions
Confidence threshold tuning
Image forming apparatus, developer cartridge, and detecting unit for detecting a state of the developer cartridge
System and method for asynchronous database command processing
Wand assembly for a cleaning appliance
Ascorbic acid derivatives and skin-whitening cosmetics
Enclosure having a closure member
Turbocharged engine