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:
Dec. 14, 1976
Filed:
Oct. 14, 1975
Hansjorg Schlaepfer, Winkel, CH;
Contraves AG, Zurich, CH;
Abstract
A method of increasing the signal-to-noise ratio of a time-dependent scanning signal produced during a periodic scanning operation wherein a defined or bounded and centered field is scanned line-by-line by means of a scanning device, there is produced a time-dependent supplementary or additional signal corresponding to the spacing of the momentarily scanned location from the center of the field and possessing a momentary value r as well as a maximum value R. Successive line scans occur in directions which in each instance differ from one another by a predetermined angle in such a manner that as a function of the line width the neighboring lines successively adjoin one another at the field boundary and within the field partially overlap and at the field center completely overlap. From the scanning signal there is produced a multiplicity of primary signals forming a sequence, which in this sequence possess a stepwise time-delay which in each case increases by a period of the line scanning. From the supplementary signal there is produced a multiplicity of auxiliary signals, a respective auxiliary signal is multiplied in a respective multiplier with a respective associated primary signal for producing a respective intermediate signal, and the intermediate signals are summated in an adder for producing an output signal.