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:
Aug. 25, 1992
Filed:
Nov. 30, 1990
Applicant:
Inventors:
Michel P Bertrand, Fontenay-Sous-Bois, FR;
Michel B Bucher, Paris, FR;
Yves R Castanet, Fontenay-aux-Roses, FR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359154 ;
Abstract
A message transmission system is operative for transmitting, over a short range, information emitted by at least one transmitter to one or more receivers, the transmitter being situated in a semi-hemispherical field above the receivers. Each receiver has optics for focusing the semi-hemispherical field on multiple detector elements of an array placed in the focal plane of the optics. The elements are responsive to the transmitted signal.