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:
Mar. 30, 2021
Filed:
Sep. 08, 2016
Applicant:
James L Hill, Show Low, AZ (US);
Inventor:
James L Hill, Show Low, AZ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G 1/07 (2006.01); G08G 1/048 (2006.01); H04W 76/50 (2018.01); G08G 1/01 (2006.01); G08G 1/087 (2006.01);
U.S. Cl.
CPC ...
G08G 1/048 (2013.01); G08G 1/0137 (2013.01); G08G 1/087 (2013.01); H04W 76/50 (2018.02);
Abstract
A traffic control system comprises a control unit and a plurality of speakers each configured to function as a microphone and having a DC resistance in the range of 20 to 30 ohms. The control unit monitors the DC resistance of each speaker and communicates malfunctions to a 24 hour emergency dispatch center which contacts repair personnel. The control unit also compares the frequency pattern of a siren to ambient noise at an intersection to distinguish siren sound from ambient noise.