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.:

US 8204189 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 19, 2012

Filed:

Aug. 01, 2007
Applicants:

David Charles Rhodes, Auckland, NZ;

Christopher Kimberley Laird, Auckland, NZ;

Inventors:

David Charles Rhodes, Auckland, NZ;

Christopher Kimberley Laird, Auckland, NZ;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An appliance having a diagnostic capability includes a tone generator, a controller, a data collection function, memory for storing the collected data, and a transmitter. The transmiter transmits a stream of data derived from the stored data using a carrier signal. The carrier signal is switched on and off according to bits in a stream of data derived from the stored data. The transmission also includes interleaving each bit for transmission with an off period of the carrier. Each off period of the carrier has a duration of at least 100 milliseconds.


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