Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle
Patent
1993-08-16
1996-02-27
Swarthout, Brent A.
Communications: electrical
External condition vehicle-mounted indicator or alarm
Transmitter in another vehicle
340906, G08G 100
Patent
active
054952425
ABSTRACT:
An early warning system (10) for visually informing the hearing impaired driver (D) of an automotive vehicle (A) of the proximity of an emergency vehicle by detecting a siren being sounded by the emergency vehicle. A microphone unit (12) receives an audible frequency signal transmitted by the siren. This signal is in one of a band of audible frequencies. In addition to the siren, the microphone unit receives other audible frequency signals as well. A signal processor (22) processes all received audible frequency signals. The processor includes an analog-digital converter (30) for converting received signals to a digital signal. The processor further includes a correlator microprocessor (32) for comparing the resulting processed signal to known siren signal characteristics each of which identifies a different type of siren. A light indicator (D1) provides a visible signal to the driver of the proximity of an emergency vehicle and an audible warning is also provided. These warnings allow the driver time to take appropriate action to avoid the emergency vehicle. The indicator is illuminated when a correlation is found indicating a received signal corresponds with the sound made by an emergency vehicle siren.
REFERENCES:
patent: 3430195 (1969-02-01), Castlen
patent: 4209769 (1980-06-01), Chronerberry
patent: 4587522 (1986-05-01), Warren
patent: 4625206 (1986-11-01), Jensen
patent: 4747064 (1988-05-01), Johnston
patent: 4785474 (1988-11-01), Bernstein et al.
patent: 4806931 (1989-02-01), Nelson
patent: 4952931 (1990-08-01), Serageldin et al.
patent: 5046127 (1991-09-01), Luber et al.
patent: 5287411 (1994-02-01), Hill et al.
Kick James
McConnell William D.
C.A.P.S. Inc.
Swarthout Brent A.
LandOfFree
System and method for detection of aural signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for detection of aural signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for detection of aural signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1682074