Touch field compound field detector personal ID

• US 7,890,055 B1
• Filed: 07/09/2008
• Issued: 02/15/2011
• Est. Priority Date: 07/09/2007
• Status: Expired due to Fees

• Current Assignee: Everlokt Corporation
• Original Assignee: Everlokt Corporation
• Inventors: Stein, John William
• Primary Examiner(s): Dao; Minh D
• Application Number:
  US12/217,776
• Time in Patent Office: 951 Days
• Field of Search: 455/41.1, 455/85, 455/214, 455/264, 455/263, 455/100, 455/414.1, 235/380, 607/32, 607/60, 340/573.1
• US Class Current: 455/41.1
• CPC Class Codes: H04B 5/22 Capacitive coupling

Abstract

A near field detection device that detects a field near the body when appropriately connected to conductive plates. The near field is generated by an oscillatory voltage device which when in contact with the body permeates all that is in contact with the body. The detector electronics and conductive plates are packaged so that near contact with the body is accommodated. A footwear packaging scheme provides a convenient location to embed the detector invention, though other packaging arrangements and locations on the body are claimed. Auxiliary electronics may be included with the detector and conductive plates to provide additional synergistic functionality to the packaging scheme.

Claims

1. A touch field compound field detector comprising:

two opposing metal plates separated by an insulation material;

differential amplifier inputs electrically connected to the two metal plates;

an output of the differential amplifier being electrically connected to a voltage level sense device;

the level sense device configured to produce a digital process signal when a body comes in electrical contact with an oscillatory signal causing the body to become a near field emitter to the detector.