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:
Apr. 11, 1978
Filed:
Sep. 08, 1976
Philippe Defranould, Paris, FR;
Bernard Munier, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
A reading device for analysing an optical image in one dimension and for converting it into an electrical signal the amplitude of which characterizes the light intensity of the elemental zones analysed by a semiconductive substrate and scanned by the interaction of acoustic surface waves on a piezoelectric substrate, which comprises, for increasing its sensitivity, discrete junctions on the surface of the photosensitive semiconductive substrate 'scanned' by the surface waves arising out of the non-linear interaction, and wherein the output signal is collected between an electrode disposed on the other surface of the semiconductive substrate and an electrode of the piezoelectric substrate.