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:
Sep. 05, 1989
Filed:
Oct. 21, 1986
Sasson Toeg, Beverly Hills, CA (US);
Other;
Abstract
A method and apparatus for detecting the presence of an object, such as a biological organism, particularly that of a human. Changes occuring upon occupation of a unoccupied spacial location are sensed and analyzed to produce a display, or otherwise used to control other devices. The apparatus includes an antennae to detect electromagnetic radiation changes caused by an organism coming into contact with the antennae or in a spacial area in proximity of the antennae. The changes detected by the antennae are coupled through a receiver to a bridge network for analysis. The circuitry of the bridge network compares the changes caused by the detected object to a zero reference. An output from the bridge is applied to a process which compares all signals with a vector preset in the process. Amplitude and phase are compared with known characteristics for the presence of a human body. The process or output can then be used to indicate the presence of a human by a display device or to trigger alarm devices or for other purposes.