Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent
1988-11-22
1989-05-23
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
364449, 340996, G01S 124
Patent
active
048334774
ABSTRACT:
An omega, loran or satellite navigation receiver is provided with a speech synthesizer coupled to its latitude/longitude output which is in turn coupled to a transmitter which transmits the latitude and longitude along with a "mayday" indication on an emergency channel when an emergency button is depressed on the unit. The emergency button turns the power on for the navigation unit and bypasses all functions except those relating to the production of a lat./lon. signal. The emergency button also activates the synthesizer after determining that the navigation unit has obtained lock. Upon the obtaining of lock a repeat timer produces repeated dump pulses to the speech synthesizer which modulates the transmitter to transmit the "mayday" indication plus an indication of the latitude and longitude of the vessel. As an option, the vessel name, type and color may be entered into a memory for the speech synthesizer so that the identity of the vessel and its type and color may be ascertained. As an additional feature the unit is provided with a receiver tuned to a special channel utilized by the Coast Guard or other authorities to disable the transmitter remotely. A manual disable from within the vessel is also provided. In one embodiment the same antenna is utilized for the navigation unit, the transmitter and the receiver, whereas in another embodiment the navigation unit is placed in stand-by during the transmit cycle so that its latitude and longitude are not affected by the emergency transmission.
REFERENCES:
patent: 3573819 (1971-04-01), Mason et al.
patent: 3840877 (1974-10-01), Crane
patent: 3907223 (1975-09-01), Crane
patent: 4135143 (1979-01-01), Argentieri et al.
patent: 4234924 (1980-11-01), LaVance et al.
patent: 4288789 (1981-09-01), Molinick et al.
patent: 4383241 (1983-05-01), Kojima et al.
patent: 4435711 (1984-03-01), Ho et al.
patent: 4489405 (1984-12-01), Tendler
patent: 4531114 (1985-07-01), Topol et al.
patent: 4589132 (1986-05-01), Botbol et al.
patent: 4616350 (1986-10-01), Tendler
patent: 4621348 (1986-11-01), Tendler
Swann Tod
Tarcza Thomas H.
Tendler Robert K.
LandOfFree
Emergency vessel location system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Emergency vessel location system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergency vessel location system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1733321