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:
Nov. 11, 1986
Filed:
Mar. 05, 1984
John K Guscott, Lynnfield, MA (US);
Mario D Casamassima, Randolph, MA (US);
American District Telegraph Company, New York, NY (US);
Abstract
Alarm system apparatus and method for optically transmitting information indicative of system operational status from an alarm detection unit to a remote receiver. The alarm detection unit includes a light emitting element for optical transmission of diagnostic and other data to the receiver. The light emitting element is pulse activated in accordance with a specified protocol to optically transmit data serially to the receiver, and the receiver is adapted for decoding of the serially transmitted data to provide an output indication to a system user indicative of detection unit operational parameters. One embodiment of the invention includes a bar graph indicator to provide a visual indication of selected operational parameters as an aid to a user in assessing system performance characteristics.