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:
Feb. 26, 1980
Filed:
May. 18, 1977
Harold G Alles, Bridgewater, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
At least one movable device is mechanically coupled to a coupling device which moves in response to the motion of the movable device. The coupling device moves in a path which closely parallels the path of a time-varying, propagating electric field. Upon interception of the electric field with the coupling device, a signal is transferred through the coupling device by capacitive coupling with the field to an input of a detector. The signal is detected by circuitry which generates a pulse width modulated (PWM) signal corresponding to the period of time between the initiation of the propagation of the electric field and the moment of interception. Circuitry is provided to generate pulse code modulated (PCM) signals responsive to the position location of up to 2.sup.n movable devices.