The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 1982
Filed:
Dec. 14, 1979
Applicant:
Inventor:
David J Whitehouse, Melton Mowbray, GB;
Assignee:
The Rank Organisation Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06G / ;
U.S. Cl.
CPC ...
364728 ; 3317 / ; 364507 ; 364819 ;
Abstract
A method of deriving the value of any one of the commonly used parameters for characterizing surfaces in surface measurement technology includes the steps of computing the autocorrelation function of a signal representing the surface, and selectively utilizing values of this autocorrelation function together with the value of the sampling interval used in generating the autocorrelation function, to derive the desired parameter values. This method considerably simplifies the information on a surface which is required, and enables micro-processor techniques to be used in the computation of the parameters.