Radio telephone with position transmission capability

• US 4,435,711 A
• Filed: 09/15/1980
• Issued: 03/06/1984
• Est. Priority Date: 09/15/1980
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Sharpe, Claude A., Ho, Cecil C., Bell, Alexander G., Butcher, Bruce A.
• Primary Examiner(s): Blum, Theodore M.
• Application Number:
  US06/187,253
• Time in Patent Office: 1,268 Days
• Field of Search: 343/112 R, 343/103, 340/22, 340/23, 340/24, 455/88, 455/89, 364/452
• US Class Current: 342/389
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236

Abstract

A communications link having a position capability responsive to either a manual or remote control actuation. In one embodiment, a remote carrier has a navigation system for outputting signals representative of the carrier location or position. A frequency shift key (FSK) modulator is connected to the navigation system for tone coding the carrier position signals, a transmitter of a transceiver is connected to the modulator for transmitting the carrier position signals, and a position enable switch for controlling selectively the transmittal of the carrier position signals. In another embodiment, a base station is provided with a control station identification signal (ID) generator, an FSK modulator for tone modulating the station identification signal, and a transmitter connected to the FSK modulator for transmitting the tone modulated carrier ID signal, and a remote station is provided with a receiver mounted upon the carrier for receiving the ID signal, said receiver having a demodulator for demodulating the received carrier identification signals, means for recognizing the ID signal, enabling means for enabling a transmitter, a navigation system outputting position information, an FSK modulator connected to the navigation system for tone modulating the carrier position information, a transmitter for transmitting the position information, and in the base carrier a printer having an FSK demodulator connected to the receiver for demodulating and printing the carrier position information.

Claims

1. A communication data link system comprising:

(a) a base radio transceiver station including a receiver for receiving incoming messages, a polling generator means for generating a carrier identification code signal, a transmitter operatively connected to the polling generator means for transmitting the code signal and a display means for displaying the messages; and

(b) a remote radio transceiver for a carrier including a LORAN-C navigation system for outputting signals representative of the carrier'"'"'s position, a transmitter of the transceiver connected to the navigation system output for transmitting the carrier position signals, a receiver means for receiving the carrier identification code signal transmitted by the base radio transceiver station and a switching means for controlling selectively the automatic and manual transmittal of the carrier position whereby the carrier position may be transmitted in response to receipt of the carrier identification code signal or to manual actuation of the switching means for single transmission or continuous transmission.

2. A communication data link system according to claim 1 wherein the switching means of the remote radio transceiver comprises a logic circuit and a manually operable switch said logic circuit including means operably connected to the manually operable switch and receiver and operative in response to signals from either the manually operable switch or receiver means to activate the carrier position transmitter.

3. A communication data link system according to claim 2 wherein the means of the logic circuit operably connected to manually operable switch and receiver means is an "OR" gate.

4. A communication data link system according to claim 2 wherein the switching means further includes a timing and control means operative in response to the manually operable switch to activate the transmitter for transmitting the carrier position on a preselected basis and in response to the received carrier identification code signal to actuate the transmitter for transmitting the carrier position.