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. 18, 1986
Filed:
Nov. 22, 1982
Applicant:
Inventors:
Chester D Slocum, Miami, FL (US);
John R Batty, Jr, Miami, FL (US);
Assignee:
Cordis Corporation, Miami, FL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08C / ; A61N / ;
U.S. Cl.
CPC ...
34087032 ; 1284 / ; 128631 ; 34087019 ;
Abstract
For inbound data transmission a carrier signal is gated by the external programmer to transmit bursts of discrete numbers of cycles. The carrier is picked up by an implanted telemetry coil. The bursts are amplified and decoded by 'missing pulse' detection. Outbound telemetry is synchronized with the external constant carrier in a similar manner by loading the coil for discrete numbers of cycles. In the preferred embodiment, within an eight cycle bit period, two cycles of 64 kHz carrier represent '0' while a six cycle burst represents '1', to achieve a two-way data transmission rate of 8000 bits per second.