US5202783A — Secure and programmable friendly target recogniti…

Claim 1

Independent Claim 125 words

In a combat zone having friendly and unfriendly target objects residing therein, a system for recognizing friendly target objects during the targeting thereof, said system comprising: transmitting means mounted on each friendly target object in the combat zone for transmitting radiation simultaneously in all directions therefrom in the form of coded, short burst data packets according to a particular digital transmission code sequence; and receiving means having a field-of-view limited to one targeted object to be recognized, said receiving means being mounted on a targeting device aimed at the one targeted object for detecting said transmitted radiation in said receiving means' limited field-of-view, wherein the presence of said transmitted radiation according to the particular digital transmission code sequence is indicative of a friendly target object.

Claim 2

Dependent Claim 125 words

In a combat zone having friendly and unfriendly target objects residing therein, a system for recognizing friendly target objects during the targeting thereof, said system comprising: transmitting means mounted on each friendly target object in the combat zone for transmitting radiation simultaneously in all directions therefrom in the form of coded, short burst data packets according to a particular digital transmission code sequence; and receiving means having a field-of-view limited to one targeted object to be recognized, said receiving means being mounted on a targeting device aimed at the one targeted object for detecting said transmitted radiation in said receiving means' limited field-of-view, wherein the presence of said transmitted radiation according to the particular digital transmission code sequence is indicative of a friendly target object.

Claim 3

Dependent Claim 41 words

A system as in claim 1 further comprising: storage means in communication with said transmitting means for electronically storing a plurality of the digital transmission code sequences; and means for selecting the particular digital transmission code sequence from said stored plurality.

Claim 4

Dependent Claim 20 words

A system as in claim 2 wherein said selecting means is an electronic keypad in communication with said storage means.

Claim 5

Dependent Claim 16 words

A system as in claim 2, wherein said storage means is a read only memory (ROM).

Claim 6

Dependent Claim 31 words

A system as in claim 2 further including means for preventing unauthorized movement of said transmitting and receiving means and unauthorized access to said stored plurality of digital transmission code sequences.

Claim 7

Dependent Claim 34 words

A system as in claim 5 wherein said preventing means comprises a self-destruct circuit connected to said storage means, said circuit being activated in response to one of said unauthorized movements or unauthorized accesses.

Claim 8

Dependent Claim 15 words

A system as in claim 1 wherein said transmitted radiation is in the infrared spectrum.

Claim 9

Dependent Claim 136 words

In a combat zone having friendly and unfriendly objects residing therein, a system comprising: at least one transmitter, mounted on each friendly object, for radiating an infrared signal simultaneously in all directions therefrom in the form of code, short burst data packets, wherein the infrared signal is indicative of a particular digital transmission code; an infrared receiver, mounted on each friendly object, configured to selectively target one of the objects in the combat zone and detect the presence of the infrared signal; and processing means, connected to said receiver and provided with a code indicative of friendly objects, for decoding the detected infrared signal into the particular digital transmission code and for comparing the particular digital transmission code to the provided friendly objects code wherein a match therebetween indicates that the selectively targeted object is friendly.

Claim 10

Dependent Claim 136 words

In a combat zone having friendly and unfriendly objects residing therein, a system comprising: at least one transmitter, mounted on each friendly object, for radiating an infrared signal simultaneously in all directions therefrom in the form of code, short burst data packets, wherein the infrared signal is indicative of a particular digital transmission code; an infrared receiver, mounted on each friendly object, configured to selectively target one of the objects in the combat zone and detect the presence of the infrared signal; and processing means, connected to said receiver and provided with a code indicative of friendly objects, for decoding the detected infrared signal into the particular digital transmission code and for comparing the particular digital transmission code to the provided friendly objects code wherein a match therebetween indicates that the selectively targeted object is friendly.

Claim 11

Dependent Claim 48 words

A system as in claim 8 further comprising: means for storing a plurality of codes used for both the particular digital transmission code and the provided friendly objects code; and means for selecting the particular digital transmission code and the provided friendly objects code from the stored plurality.

Claim 12

Dependent Claim 31 words

A system as in claim 9 further comprising means for preventing unauthorized movement of said at least one transmitter or said receiver and for preventing unauthorized access to the stored plurality.

Claim 13

Dependent Claim 34 words

A system as in claim 10 wherein said preventing means comprises a self-destruct circuit connected to said storing means, said circuit being activated in response to one of said unauthorized movements or unauthorized accesses.

Claim 14

Dependent Claim 16 words

A system as in claim 9 wherein said storing means is a read only memory (ROM).

Claim 15

Dependent Claim 43 words

A system as in claim 9 wherein said selecting means is an input receiving means, connecting said storing means to said at least one transmitter and said receiver, for receiving inputs indicative of the particular digital transmission code and the friendly objects code.

Claim 16

Dependent Claim 28 words

A system as in claim 8 further comprising: first modifying means for modifying the particular digital transmission code; and second modifying means for modifying the friendly objects code.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-04-12	1996-10-12	1997-04-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-04-12	2000-10-12	2001-04-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-04-12	2004-10-12	2005-04-13	$7700.00	Window Closed / Lapsed

Secure and programmable friendly target recognition system

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