USO0RE42495E

(19) United States (12) Reissued Patent

(10) Patent Number:

Whitten et al. (54)

(45) Date of Reissued Patent:

Jun. 28, 2011

INTRUDER DETECTION AND WARNING

5,786,760 A *

7/1998 Suzuki et a1. ............... .. 340/541

SYSTEM

5,892,446 A

4/1999

5,980,123

.

(75)

US RE42,495 E

.

Inventors: Stephen Whitten,Harr.1sonburg,VA~ (Us); Rlchard Stockstlll,$anAnton10, TX (US)

(73) Assignee: Communicated Enforcement, LLC,

Reich ........ .. Hei?er

340/5731

A

11/1999

. . . . . . . . . . . . . . .

6,079,862 A

6/2000

..

364/167.6

6,094,135 A * 6,097,029 A 6,507,366 B1

7/2000 Sugimoto et al‘ ““ H 8/2000 Downie et a1. l/2003 Lee

340/541 250/330 348/352

6,943,685 B2*

9/2005

Kawashima et a1.

. . . . . ..

396/427

Seo ............................. .. 340/541

* Cited by examiner

Miami, FL (U S) Primary Examiner * Van T. Trieu

(21)

Appl- NO-1 12/700’241

(22) Filed:

(74) Attorney, Agent, or Firm 4 Bacon & Thomas, PLLC

Feb. 4, 2010

(57)

Related U‘s‘ Patent Documents Reissue 0ft (64) Patent NO? Issuedi APPI- NO-I Filedi (51)

(58)

7113275253 Feb- 5, 2008 11/1211189 May 41 2005

Int- ClG083 13/00

ABSTRACT

An intruder detection and warning system has a plurality of infrared sensors for receiving infrared radiation from respec tive contiguous areas of premises in need of security. A cen tral illumination unit including a rotatable light is operated to project a beam illuminating a selected one of the contiguous areas of the premises in response to the received infrared radiation by the infrared sensor in the selected area indicating presence of a person in the selected area. Initially a polite message randomly selected from a group of different polite

(2006-01)

US. Cl. ....................... ..

messages is broadcast to request the intruder t0 leaVe the

Field of Classi?cation Search ................ .. 340/ 541,

premises. When continued presence of the intruder is

340/541.1, 541.2, 545, 545.2, 545.3, 506,

detected, the light beamis moved away from andthen backto

340/517, 555, 556, 557, 567, 540; 349/152 See application ?le for complete search history.

the selected area and a further message randomly selected from a group of different more demanding messages is broad cast to demand the intruder to leave the premises. Thus com

(56)

References Clted

puterized control of the central illumination unit to selectively

us PATENT DOCUMENTS

detect intruders mimics manual monitoring and security

illuminate areas monitored by respective infrared sensors to 2,256,787 A

9/ 1941 Lazar ........................... .. 240/ 1.2

enforcement to more effectively deter intruders. Control of

2,700,318 A *

1/1955

~~~~~~ ~~ 88/1

the illumination unit with an associated video camera is

"

passed to a remote monitoring station upon continued failure

~~

2 5’309’145 A *

5/1994

340/540

5,557,173 A

9/1996

.... .. 315/158

5,581,297 A *

ofthe intruder to vacate the premises.

12/1996 Koz et a1. .................... .. 348/152

PERSONNEL

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US RE42,495 E 1

2

INTRUDER DETECTION AND WARNING SYSTEM

Other objects, advantages and features of the invention will be apparent form the following detailed description of the

invention and accompanying drawings. Matter enclosed in heavy brackets [ ] appears in the original patent but forms no part of this reissue speci?ca

BRIEF DESCRIPTION OF THE DRAWINGS

tion; matter printed in italics indicates the additions made by reissue.

FIG. 1 is a block diagram of an intruder detection and

warning system in accordance with the invention. FIG. 2 is a perspective view of an illumination, camera and

BACKGROUND OF THE INVENTION

communication unit in the system of FIG. 1. FIG. 3 is perspective view of a personnel infrared sensor unit in the system of FIG. 1. FIG. 4 is table showing messages stored in the system of FIG. 1. FIG. 5 is a diagram illustrating operation of one portion of

The prior art contains many intruder detection and warning systems including systems employing one or more infrared

sensors along with lights, video cameras, video recorders, monitors, warning devices and/ or warning messages. Security of various facilities is an increasing concern. Interception of intruders on premises is an important part of

the system of FIG. 1 to direct a light beam over a selected area.

security. Visual monitoring of live video monitors displaying

directed to another selected area.

FIG. 6 is a diagram similar to FIG. 5 but with the light beam

scenes of the premises is often used but fatigue, distractions and other human factors can result in failure to detect intru

sions. Infrared detection of intruders is commonly used and can alert or activate visual monitoring. One disadvantage of

visual monitoring is the high cost of personnel to perform the visual monitoring. Some systems employ lights, noise and/or

25

warning messages triggered by infrared sensors to deter or scare away intruders but often such lights, noise or warning

FIG. 7 is a diagram similar to FIGS. 5 and 6 but with the light beam directed to still another selected area. FIG. 8 is a step diagram of a main program employed to control the illumination, camera and communication unit of FIGS. 1 and 2. FIG. 9 is a step diagram of an analyze sensor inputs pro cedure of the program of FIG. 8.

FIG. 10 is a step diagram of warning procedure of the program of FIG. 8.

messages are ineffective as intruders recognize such mea

sures as being generated by computers that can be ignored.

Additionally large area premises require employment of mul

DETAILED DESCRIPTION OF THE INVENTION 30

tiple intrusion detection and warning systems to cover respec

As shown in FIGS. 1, 5-7, the invention is embodied in a intruder detection and warning system which includes one or more illumination, camera and communication units 20, each of which are disposed in premises centrally with respect to a

tive sections of the premises adding to the cost of such prior art systems. Thus there exists a need for effective intruder interception

systems with low operating costs.

35

corresponding plurality of personnel infrared sensor units, such as units 22a, 22b, 22c, 22d and 22e (shown in detail as

BRIEF SUMMARY OF THE INVENTION

unit 22 in FIG. 3) deposed to sense the presence of a person or

persons in respective contingent areas 24a, 24b, 24c, 24d and The invention is summarized in a intruder detection and

warning system having a plurality of infrared sensors for receiving infrared radiation from respective contiguous areas

40

of premises in need of security; logic or computer processing for indicating if the received infrared radiation from each of the contiguous areas is from one or more persons intruding on

the premises; an illumination unit including a rotatable light

45

24e of the premises. Particularly as shown in FIGS. 5, 6 and 7, each unit 20 can be operated to rotate a light 26 to project a light beam 28 to selectively illuminate any one of the areas

24a, 24b, 24c, 24d or 24e. For example, FIG. 5 shows light beam 28 illuminating area 240, FIG. 6 shows light beam illuminating area 24b and FIG. 7 shows light beam 28 illu minating area 24e. Since the rotatable light 26 is disposed

centrally in the premises and the light beam is projected onto

which can be operated to project a beam illuminating a selected one of the contiguous areas of the premises; and a

only a portion of the premises such as the selected one of the areas 24a, 24b, 24c, 24d and 24e, an intruder illuminated by

control responsive to the indicating means indicating pres

the light beam is given the impression that the intruder detec

ence of a person on one of the contiguous areas for operating

An object of the invention is to provide a relatively low cost

tion and warning system is under manual control. Thus an intruder will be deterred from continuing the intrusion. Additionally the system includes a plurality of stored mes

intruder detection and warning system that effectively deters

sages, FIG. 4, such as messagela, messagelb, messagelc, . .

the illumination unit to project a beam of light on the area where the presence of the person is indicated.

many intruders and reduces the need for manual operation to view intrusions.

50

. of group 1 and message2a, message2b, message2c, . . . of 55

An advantage of the invention is that relatively simple

sages (different in that they are recorded by different people and/or have different wording) and the messages of group 2 are different demanding messages. Examples of polite mes

passive infrared sensors can be spaced about a central illumi

nation and communication unit with automatic operation of the illumination unit mimicking manual operation to direct a light beam to the area where infrared radiation detected by a

sages are: “You are on private property, please leave” or “You 60

Additional features enhancing the appearance of manual

operation include provision of light beam movement away

premises.

are in a restricted area, please leave,” Examples of demanding messages are: “Please leave the area immediately or police will be called” or “You have two minutes to leave the area

respective sensor indicates presence of a person.

and back to the area where a person is detected, and random selection of a broadcast message from different messages and/ or different voices requesting the intruder to vacate the

group 2. The messages of group 1 are different polite mes

before you are arrested for trespassing.” Typically the demanding message will include a threat of enforcement. 65

When an intruder is ?rst detected on the premises, a randomly selected one of the polite messages of group 1 is broadcast on

the premises. If the intruder is still detected after a delay

US RE42,495 E 3

4

period, such as two to ?ve minutes, a randomly selected one of the demanding messages of group 2 is broadcast on the

array. The housing contains a rechargeable battery (not shown) which is recharged by the solar panel and contains electronic circuitry for handling radio transmission to and from the unit 20, for processing signals from the passive

premises. Often intruders intending to in?ict damage, steal goods or spy on premises will make repeat visits to the pre

mises. The broadcast of different messages during repeated visits gives the intruder the impression that the intruder’s presence is monitored by security personnel and thus intru

infrared sensor 54 and for controlling the charging of the

battery. A main program, FIG. 8, employed by a microprocessor in the control unit 32 controls operation of the light and camera positioning motors and the message broadcasting facilities in the illumination and communication unit 20. At startup step

sions are further deterred.

Referring back to FIG. 1, the intruder detecting and wam ing system also includes a control unit 32 connected to the illumination, camera and communication units 20, a remote monitoring facility or center 34 with a video display monitor 36 connected to the control unit 32 and possibly connected to

60 the system is initialized and then in step 62 a timer such as a sixty minute timer is set to the desired minimum period between system checks. In step 64 the procedure of FIG. 9 is called to analyze inputs from the ?eld sensors to determine if

many other intruder detecting and warning systems (not shown), and a video recorder for recording video frames viewed by the unit 20. Typically the control unit 32 and the

one or more persons are present in the areas monitored by

personnel infrared sensor units 22 associated with the unit 20, such as sensor units 22a, 22b, 22c, 22d and 22d monitoring respective areas 24a, 24b, 24c, 24d and 24e when there are

video recorder are mounted in a building (not shown) or other secure enclosure while units 20 and 22 are mounted outside

on posts, outside portions of buildings, etc. Data from and to personnel infrared sensor units 22 is transmitted data by wire

?ve such sensors. 20

In step 66 of FIG. 9 it is determined if a person is present in

area-1. The analysis of the signal(s) generated by infrared

less or radio links to the unit 20. Cables connect the units 20

to the control unit 32 for transmitting the data from the infra

sensors to determine the presence of a person can be either by

red sensors along with light position and video signals. Con

logic or computer processing in the passive sensing unit 22

trol and message signals from the control unit 32 are trans mitted by cables to the illumination, camera and communications units. The remote monitoring facility 34 is connected by cable or by dedicated or dial-up telephone lines to the control unit 34. Alternatively, the personnel infrared sensor units 22 can be

connected directly by cables in a star arrangement (not shown) or a ring arrangement (not shown) to the control unit

25

monitoring area-1 or in the control unit 32 based upon infra red readings transmitted to control unit 32. The presence of a person in the viewed ?eld is determined based upon signal

strength, duration, movement, etc. If step 66 is true then area-1 ?ag is set in step 68; otherwise the area-1 ?ag is reset

in step 70. The procedure for area-1 represented by steps 66, 30

68 and 70 is repeated for each of the areas associated with the

unit 20; for example steps 72, 74 and 76 similar to respective steps 66, 68 and 70 are performed for area-2 and steps 78, 80

32. Referring to FIG. 2, the illumination, camera and commu

and 82 similar to steps 66, 68 and 70 are performed of area-N.

nication unit 20 has a housing 42 which can be mounted on a Where the passive sensing units 22 sense arrays of arc incre support (not shown), such as under eaves of a building or on 35 ments, the angular location of the person within each area can a crossbar on a post. The rotatable light 26 includes a rotating be determined. When two adjacent areas indicate the present and pivoting mounting 44 containing internal motors which of a person in angular areas which overlap, a determination

rotate the light 26 in a horizontal plane and pivot the light 26 in a vertical plane. The light 26 is a spot light which projects a beam such, as a 400,000 candle-power beam, su?icient to illuminate a selected area in the premises under security while

that only one person is present in the overlapping portions of 40

overlapping portions of area-1 and area-2 and the determina

leaving non-selected areas non-illuminated. Preferably rotary position sensors such as potentiometers (not shown) provide

tion of a person within this overlapped area would result in the

resetting of area-1 and area-2 ?ags and the setting of area-6

signals indicating the horizontal and vertical rotary positions of the light 26 to the control unit 32. A video camera such as a color CCD video camera 46 is mounted on the housing of

the areas being viewed. Furthermore the overlapped area can be designated as a separate area, for example area-6 canbe the

45

?ag. This would enable the search light to centered on the overlapped area.

the light 26 for being rotated and pivoted with the light. The

After returning to the main program of FIG. 8, step 84 determines if the unit 20 is controlled by the remote monitor

camera 46 has motorized zoom control as well as automatic

ing station 34. If true, the program continues to cycle through

and motorized focusing control. Additional a speaker and microphone arrangement 48 is mounted on the housing 42 for

step 64 to determine presence of one or more intruders and 50

present the results to the monitoring station. If step 84 is false,

broadcasting messages in the premises and receiving

step 86 determines if any person has been found on the pre

responses for transmission to the monitoring station 34. The

mises by procedure 64 and, if true, the warning procedure of

housing 42 contains electronic circuitry for handling radio

FIG. 10 is called in step 88.

transmissions to and from the units 22, for handling cable transmissions to and from the control unit 32, for processing light and camera horizontal and vertical position signals, for

In the warning procedure of FIG. 10, the spot light is 55

has been found in the procedure 64. More particularly, step 90

providing signals to operate the light positioning motors, for

determines if area-1 ?ag is set indicating a person is in area-1. When no person is in area-1, the area-1 ?ag has not been set

providing signals operating the zoom and focus controls of the camera 46, for providing ampli?ed audio signals to the

speaker and receiving and processing audio signals from the

directed successively to all areas where a person or intruder

60

by the procedure 64 and thus procedure 88 advances to step 92 which determines if the area-2 ?ag is set. The procedure

microphone.

continues to look for set area ?ags of all the areas through

The personnel sensor unit 22, FIG. 3, includes a housing 52 which can be mounted on a post (not shown) and which

area-N ?ag in step 98 whereupon a false returns the procedure

supports a passive infrared personnel sensor 54 and a solar panel 56. Typically the sensor 54 includes an infrared array

sensor (not shown) with optics for directing infrared from arc portions of the viewed ?eld onto respective members of the

to the main program of FIG. 8. When an area ?ag is found set, such as area-1 ?ag being 65

found set in step 90, the procedure directs the spot light to that ?agged area and to broadcast one or more warnings to the

intruder. For the example of area-1 ?ag being set, step 102

US RE42,495 E 5

6

determines if area-1 level is set to initial state 0. If true, step 104 sets the area-1 level to 1, step 106 turns the light 26 on,

ing the light beam through all the areas at two or more suc

cessive vertical positions, and step 166 then turns the light off. If step 160 is false, step 170 determines if the sixty minute timer is 0 and if true, proceeds to step 172 where a system

and step 108 rotates and pivots the light 26 to illuminate area-1. The horizontal and vertical positions needed for the light 26 to illuminate area-1 are predetermined and stored in a non-volatile memory for being recalled and used to position the light. Then in step 110, a randomly selected message from the ?rst group of messages is broadcast from the speaker 48. This ?rst message is a polite message requesting the intruder

check is preformed to determine if all components are oper

ating properly. After the system check, the program returns to step 62 to again set the sixty minute timer.

The foregoing description and accompanying drawings are only illustrative of the invention and many variations, modi ?cation and changes in detail can be made without departing from the scope and spirit of the invention.

to leave the area. The recording of one or more video frames

in the video recorder 38 is performed in step 112 and an area-1 timer is set in step 114 to a value equal to a time period suf?cient to allow the intruder to leave area-1.

The invention claimed is:

1. An intruder detection and warning system comprising: a [plurality of infrared sensors] personnel sensor for

When step 102 is false, i.e., after the initial movement of the spot light and broadcast of a polite warning to the intruder,

[receiving infrared radiation from] monitoring respec

step 116 determines if the area-1 level is now 1, and if true step 118 determines if the intruder has had suf?cient time to

tive [contiguous] di?’erent areas of premises in need of

leave area-1 by determining if area-1 timer has lapsed. When

indicating means for [indicating if the received infrared

true, step 120 sets area-1 level to 2. Next, step 122 rotates the light 26 to the left from area-1, to the right past area-1 and then

security; radiation] analyzing inputs from each of the [contigu 20

back to area-1, and pivots the light 26 down from area-1, up past area-1 and the back to area-1. This rotation of the light is

an illumination unit including a rotatable light which can be operated to project a beam illuminating a selected one

designed to give the appearance of the light being operated by manual controls to deter further intrusion. Step 124 records one or more additional video frames in the video recorder 38 25

and step 126 broadcasts a second message selected from the

[contiguous] diferent areas, for operating the illumina tion unit to project a beam of light on the selected one area where the presence of the person is indicated, to

ing then the ?rst message and may include a threat of enforce 30

arrested.

The program proceeds to step 128 when step 116 is false

claim 1 comprising a plurality ofpersonnel sensors, wherein each of the plurality of [infrared] personnel sensors is a pas sive infrared sensor. 35

mining if the area-1 timer is 0. When true, step 132 sets the area-1 level to 3 and step 134 passes control to the remote

monitoring station 34. Further automatic operation of the illumination, camera and communication unit 20 is prevented by step 84 of the main program. After remote control is discontinued, step 136 will be false causing the program to

illuminate the selected one area.

2. An intruder detection and warning system as claimed in

wherein it is determined of the area-1 level is 2. If true, step 130 determines of enough time has elapsed for the intruder to

leave the premises after the second warning message by deter

of the [contiguous] di?’erent areas of the premises; and illumination operating means, responsive to the indicating means indicating presence of a person in one of the

second group of messages followed by setting the area-1 timer again in step 114. The second message is more demand ment, such as a threat to call the police or have the intruder

ous] areas [is from] to determine ifthe presence ofone or more persons intruding on the premises is indicated;

3. An intruder detection and warning system as claimed in claim 1 further including message means responsive to the indicating means indicating presence of a person for broad casting a message on the premises requesting the intruder to

leave the premises. 40

4. An intruder detection and warning system as claimed in

claim 3 wherein the illumination operating means, responsive

proceed to step 138 where the area-1 level is set back to 0 and then to step 140 where the light is turned off. The procedure of FIG. 10 described above by the even

to the indicating means indicating presence of a person a

period of time after the message broadcast, operates the illu mination unit to simulate manual control by moving the light

numbered steps 102 through 140 is a warning procedure for

45

an intruder detected in area-1. If any of steps 90, 118 and 130 are false or after completion of steps 114 and 140, the warning procedure advances to step 150 where it is determined if area-2 ?ag is set to indicate that a person is in area-2. When true a warning procedure 152 having steps similar to the even

50

beam away from the area where the presence of the person is indicated and then back to the area where the presence of the person is indicated. 5. An intruder detection and warning system as claimed in claim 4 wherein the second illumination operating means

successively rotates the light and pivots the light to move the

numbered steps 102 through 140 is performed for area-2.

light beam successively horizontally and vertically away

Similar procedures are performed for each of the areas area-1

through area-N such as indicated by warning procedure 156

from the area where the presence of the person is indicated. 6. An intruder detection warning system as claimed in

for area-N.

claim 4 further including a memory and, stored in the

It is noted that when intruders are sensed in two or more 55 memory, a plurality of different messages and wherein the

areas, the light beam is successively moved to each of the areas where intruders are found. Thus intrusions by several people will not result in failure to detect and warn any of the several intruders.

After each cycle through the warning procedure of FIG. 10,

60

message means randomly selects a message from the plural ity of different messages to broadcast on the premises. 7. An intruder detection and warning system as claimed in claim 6 wherein the plurality of messages include ?rst and second groups of messages, the ?rst group of messages being

the main program from step 88 returns to step 64 so that the system continues to detect the presence of intruders in any of

different messages which politely request the intruder to leave the premises and the second group of messages being

the areas.

different messages which demand the intruder to leave the premises with a threat of enforcement; and wherein the mes

When all the areas are found clear of intruders, the program proceeds to step 160 when it is determined if any area level is greater than zero. If true, step 162 resets all area levels back to

zero, step 164 performs an area patrol by horizontally sweep

65

sage means includes ?rst message means responsive to the indicating means initially indicating presence of a person on

the premises for broadcasting a ?rst message randomly

US RE42,495 E 7

8

selected from the ?rst group of messages, and second mes sage means responsive to continued indication of the pres ence of the person on the premises for broadcasting a second message randomly selected from the second group of mes sages. 8. An intruder detection and warning system as claimed in

predetermined for the selected one area and selectively

rotates the light horizontally to the horizontal position prede termined for illumination of the selected one area. 13 . An intruder detection and warning system as claimed in

claim 12 wherein the illumination unit is a spotlight having suf?cient candle-power to illuminate the selected area. 14.An intruder detection and warning system as claimed in claim 12 wherein the illumination unit illuminates the selected one area while leaving non-selected [contiguous] di?renl areas non-illuminated. 15.An intruder detection and warning system as claimed in claim 1 further comprising a memory and, stored in the

claim 7 further including a remote monitoring station and means, responsive to further continued indication of the pres ence of the person on the premises after operation of the illumination operating means and the second message means, for passing control of the illumination means to the remote

monitoring station.

memory, horizontal and vertical light positions predeter

9. An intruder detection and warning system as claimed in claim 8 further including a video camera mounted on the

mined for each of the [contiguous] dz?‘erenl areas; and

rotatable light for enabling the remote monitoring station to view the premises.

wherein the ?rst illumination operating means retrieves the

10.An intruder detection and warning system as claimed in claim 3 further including a memory and, stored in the memory, a plurality of different messages and wherein the message means randomly selects a message from the plural ity of different messages to broadcast on the premises.

horizontal and vertical light positions predetermined for the selected one area and pivots the light vertically to the vertical position predetermined for illumination of the selected one area and rotates the light horizontally to the horizontal posi 20

16.An intruder detection and warning system as claimed in claim 15 wherein the illumination unit is a spotlight having

11 . An intruder detection and warning system as claimed in

claim 10 wherein the plurality of messages include ?rst and second groups of messages, the ?rst group of messages being different messages which politely request the intruder to leave the premises and the second group of messages being different messages which demand the intruder to leave the premises with a threat of enforcement; and wherein the mes sage means includes ?rst message means responsive to the indicating means initially indicating presence of a person on

tion predetermined for illumination of the selected one area.

suf?cient candle-power to illuminate the selected one area. 25

30

the premises for broadcasting a ?rst message randomly

17. An intruder detection and warning system as claimed in claim 15 wherein the illumination unit illuminates the selected one area while leaving non-selected [contiguous] di?renl areas non-illuminated. 18.An intruder detection and warning system as claimed in claim 1 wherein the illumination unit is a spotlight having suf?cient candle-power to illuminate the selected one area.

19.An intruder detection and warning system as claimed in claim 1 wherein the illumination unit illuminates the selected one area while leaving non-selected [contiguous] dz?‘erenl

selected from the ?rst group of messages, and second mes sage means responsive to continued indication of the pres ence of the person on the premises for broadcasting a second message randomly selected from the second group of mes sages. 12.An intruder detection and warning system as claimed in claim 1 further comprising a memory and, stored in the

35

memory, horizontal light positions predetermined for each of the [contiguous] diferenl areas; and wherein the ?rst illumi nation operating means retrieves the horizontal light position

40

areas non-illuminated.

20. An intruder detection and warning system according to claim 1 wherein the illumination operation means mimics

manual control by rotating the light in a ?rst direction past the selected one area and then in a second direction back to the selected one area.

UNITED STATES PATENT AND TRADEMARK OFFICE

CERTIFICATE OF CORRECTION PATENT NO.

I RE42,495 E

APPLICATION NO. DATED

: 12/700241 : June 28, 2011

INVENTOR(S)

: Stephen Whitten et a1.

Page 1 Ofl

It is certified that error appears in the above-identi?ed patent and that said Letters Patent is hereby corrected as shown below:

Title page, Item (57) ABSTRACT, please replace the Abstract with the following: --An intruder detection and warning system has a plurality of sensors for receiving signals from respective areas of a premises. A central illumination unit including a rotatable light projects a beam to illuminate a selected area of the premises in response to the signal received from a sensor, indicating presence of a person in that area. Initially a polite message, randomly selected from a group of

different polite messages, requests the intruder to leave. When continued presence of the intruder is detected, the light beam is moved away from and then back to the same area and a further, more

demanding message is broadcast to demand that the intruder leave the premises. Thus, computerized control of the central illumination unit mimics manual monitoring to more effectively deter intruders. -

Signed and Sealed this

David J. Kappos Director 0fthe United States Patent and Trademark O?ice

Intruder detection and warning system

Feb 4, 2010 - 6,943,685 B2* 9/2005 Seo ............................. .. 340/541 ... (21) Appl- NO-1 12/700'241. (74) Attorney, Agent, or Firm 4 Bacon & Thomas, PLLC.

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