(12) United States Patent ao) Patent No.: us 6,463,039 Bi
Ricci et al. (45) Date of Patent: Oct. 8,2002
(54) METHOD AND APPARATUS FOR FULL DUPLEX SIDEBAND COMMUNICATION
(75) Inventors: Christopher P. Ricci, Pembroke, MA (US); William Peters, Kingston, NH (US)
(73) Assignee: Intelligent Ideation, Inc., Amesbury, MA (US)
( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/065,838
(22) Filed: Apr. 24, 1998
(51) Int. CI.7 H04B 7/00; H04B 1/68;
H04Q 5/22
(52) U.S. CI 370/277; 340/10.3; 340/10.4;
455/42; 455/46; 455/47
(58) Field of Search 370/276-277,
370/310; 375/219-221, 270, 301, 321; 455/42, 45-47; 340/10.1, 10.3, 10.34, 10.4, 10.41, 572.1, 572.2, 572.4, 572.5; 342/42, 44, 51, 410^14, 116
(56) References Cited
U.S. PATENT DOCUMENTS
5,317,309 A * 5/1994 Vercellotti et al 340/10.34
5,543,798 A * 8/1996 Schuermann 342/42
5,977,913 A * 11/1999 Christ 342/465
6,064,320 A * 5/2000 d'Hont et al 342/42
* cited by examiner
Primary Examiner—-Wellington Chin
Assistant Examiner—Maikhanh Tran
(74) Attorney, Agent, or Firm—Chris Ricci
(57) ABSTRACT
The invention is an apparatus and method for using electromagnetic energy as the means ol automatic data collection (ADC). The communication system that comprises the invention utilizes frequency modulated ("FM") sideband electromagnetic energy to enable lull duplex communication with another communication device. In one embodiment one ol the communication devices is passive and the carrier is used to power the passive device. In another embodiment the communication devices are active and the carrier is suppressed to increase range or decrease power constraints, as the application requires.
18 Claims, 4 Drawing Sheets
