Crime prevention monitor system

A crime prevention monitor system which, when detecting an intruder entering into a monitor region, automatically judges quickly and reliably whether or not the intruder is an illegally intruding person on the side of its concentrator center and if so, then issues a highly reliable report to such a restraint organization as a police station. In the system, an image database having image data of authorized persons for the respective monitor regions previously registered therein is provided in the concentrator center so that, when the intruder is present in the monitor region, the image data of the intruder is sampled through a monitor camera and collated with the image data of the authorized persons of the monitor region in question, whereby, when the intruder does not correspond to any of the authorized persons of the associated monitor region, the system determines that the intruder is illegal and reports the presence of the intruder to the restraint organization.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to a crime prevention monitor system which 
monitors, on a remote control basis, the presence or absence of an illegal 
intruder entering into a monitor region to be monitored, such as an 
office, a shop, a school, a bank or a factory, on the basis of a picture 
signal received from a monitor camera installed in the monitor region for 
photographing the intruder. 
2. Description of the Related Art 
There has been so far well known such a sort of crime prevention system 
that a thermal radiation sensor or an infrared ray sensor is previously 
set in a monitor region to be watched so that when an intruder entering 
into the monitor region is detected by the sensor, the presence of the 
intruder is automatically reported to a concentrator installed in a 
security company and the like through a public line or a private line. 
With such a system, a guard of the security company rushes to the monitor 
region in question on the basis of the automatic report to the 
concentrator and when recognizing the abnormality on the spot, he or she 
quickly informs such a predetermined organization as a police station or a 
fire station of the abnormality. 
The aforementioned crime prevention sensor and concentrator are usually 
interconnected by means of a transmitter which has a function of 
automatically calling the public or private line and by means of a 
receiver which enables communication of the transmission line in response 
to the calling of the transmitter through the line and sends a report 
signal received thereafter to the concentrator. When the crime prevention 
sensor detects the intruder entering into the monitor region, the 
following procedure is carried out and an automatic report to the 
concentrator is realized. 
(1) The transmitter is started on the basis of an intruder detection signal 
received from the crime prevention sensor. 
(2) The started transmitter automatically calls the receiver installed in 
the security company or the like. 
(3) This results in the transmission line connected between the transmitter 
and the receiver being placed in its communication enable state. 
(4) A predetermined report signal having identification data, etc. of the 
monitor region included therein is transmitted from the transmitter to the 
receiver. 
(5) The transmitted report signal is demodulated at the receiver in a 
predetermined manner and then applied to the concentrator. 
In this way, the prior art system can detect the presence or absence of the 
intruder entering into the monitor region accurately to a certain extent 
so long as the crime prevention sensor is high in detection accuracy. 
However, since the presence or absence of the intruder is judged only by 
the crime prevention sensor, when the intruder is one of authorized 
persons for the monitor region or when a mouse, a dog, a cat or a bird is 
detected as an intruder or when the aforementioned transmitter, receiver, 
etc. including the sensor are erroneously operated, for example, the 
system issues an erroneous report signal with a very low reliability. As a 
result, even when the above report is issued through a so-called terminal 
apparatus including the crime prevention sensor and transmitter disposed 
in the monitor region, the guard cannot determine that the report is 
actually correct until he rushes to the on-site monitor region and 
actually confirms the situation. 
Further, with such a system, even when the above report is correct, the 
guard must confirm the on-spot situation, which inevitably requires a time 
loss until confirmation of the situation. 
There has been recently proposed a crime prevention monitor system which 
can cope with such a situation as to require emergent confirmation with an 
improved reliability, and in which a monitor camera such as an industrial 
television (ITV) camera, is also installed in a monitor region to be 
guarded so that a picture signal from the monitor camera and the 
aforementioned report signal are transmitted from a terminal apparatus to 
a concentrator, whereby a watchman on at the concentrator can monitor the 
received picture image on a suitable display unit and can confirm the 
on-spot situation substantially on a real time basis. This crime 
prevention monitor system, however, has been disadvantageous in that it is 
hard for the watchman to judge whether or not the intruder into the 
monitor region is one of authorized persons therefor in actual situations 
because he usually cannot know substantially all information of the 
monitor region, which means that such a picture image is not effectively 
utilized. 
As the number of terminal apparatuses increases not only the intruder 
detection and report accuracy of the crime prevention monitor system; but 
also its reliability; becomes very vital. 
SUMMARY OF THE INVENTION 
In view of such circumstances, it is an object of the present invention to 
provide a crime prevention monitor system in which, when an intruder 
entering into a monitor region is detected, a concentrator center can 
automatically judge quickly and reliably whether or not the detected 
intruder is really illegal and if so, can inform a restraint organization, 
such as a police station; of a reliable report. 
In accordance with an aspect of the present invention, the above object is 
attained by providing a crime prevention monitor system which comprises a 
terminal apparatus for generating monitor data on a monitor region to be 
monitored on the basis of a picture signal indicative of an intruder 
photographed by a monitor camera installed in the monitor region and for 
sending the generated monitor data onto a predetermined transmission line; 
and a concentrator for performing concentrating operation over the monitor 
data received through the transmission line to generally manage the 
monitor data of one or a plurality of the monitor regions on a remote 
control basis. 
In more detail, the terminal apparatus of the system comprises: 
(a) sensor means provided in the monitor region for detecting the presence 
or absence of the intruder entering into the monitor region; 
(b) monitor controller means for starting the monitor camera on the basis 
of the presence of the intruder detected by the sensor means and for 
sequentially receiving the picture signal photographed by the monitor 
camera therefrom; 
(c) image processing means for converting the received picture signal into 
image data; 
(d) identification data setting means for previously setting identification 
data for the monitor region; 
(e) timer means for outputting time data; and means 
(f) first report controller means, in response to the detection of the 
presence of the intruder by the sensor means, for acquiring the time data 
of the timer means, calling the concentrator through the transmission 
line, forming the monitor data on the basis of the converted image data, 
the identification data of the monitor region and the acquired time data, 
and sending the formed monitor data to the caller concentrator. 
The concentrator comprises: 
(g) image demodulator means for separating the image data from the monitor 
data received from the terminal apparatus and demodulating the image data; 
(h) identification data extractor means for extracting the identification 
data of the monitor region from the received monitor data; 
(i) an image database for previously registering therein image data of 
authorized persons with respect to the respective monitor regions; 
(j) image collator means for collating the demodulated image data with all 
the image data of the authorized persons of one of the monitor regions 
specified by the extracted identification data among the image data 
registered in the image database and for outputting a matching signal 
indicative of a coincidence when the demodulated image data coincides with 
the image data of any of the authorized persons and outputting a 
non-matching signal indicative of a non-coincidence when the demodulated 
image data fails to coincide with the image data of any authorized 
persons; and 
(k) second report controller means, when the image collator means outputs 
the non-matching signal, for calling a receiver previously installed in a 
restraint organization, forming together with the time data emergent 
report data informing the presence of the illegal intruder into the 
monitor region specified by the identification data extracted from the 
monitor data, and sending the formed emergent report data to the caller 
receiver. 
The terminal apparatus comprising the aforementioned means (a) through (f), 
when the intruder enters into the monitor region, converts intruder's 
face, attitude, behaviors, etc. into image data and transmits as the 
monitor data the image data together with the identification data of the 
monitor region and the intrusion time data thereof from the first report 
controller means (f) to the concentrator. 
On the other hand, the concentrator, when receiving the monitor data, 
separates the image data, identification data and time data from the 
received monitor data. In particular, the image data separated and 
demodulated through the image demodulator means (g) is collated at the 
image collator means (j) with the image data previously registered in the 
image database (i). 
The image data base (i) previously registers therein the image data of the 
authorized persons as, e.g., face picture data with respect to the 
respective monitor regions. The image collator means (j) retrieves from 
the image database (i) all image data registered for the monitor region 
specified by the identification data extracted through the identification 
data extractor means (h) and sequentially collates the retrieved image 
data with the demodulated image data received from the terminal apparatus. 
In this case, the image collator means (j), for example, performs the 
following operations (1) through (4). 
(1) Extracts a plurality of still images from the demodulated image data. 
(2) Further extracts face parts from the plurality of extracted still 
images. 
(3) Generates a face picture model from the extracted face part images. 
(4) Overlaps the corresponding images of the image data registered in the 
image database (i) on the generated face picture model and judges the 
coincidence or non-coincidence on the basis of extracted contours and 
features of the overlapped images. 
The image collator means judges, on the basis of the extracted contour and 
feature parts of the overlapped images, whether or not the demodulated 
image data corresponds to any of the registered authorized persons. When 
determining a coincidence therebetween, the image collator means outputs 
the matching signal and when determining a non-coincidence, outputs the 
non-matching signal. 
Only when the non-matching signal is issued from the image collator means 
(j) based on the image collation result of the collator means, that is, 
only when it is determined that the intruder does not correspond to any of 
the authorized persons for the monitor region, the image collator means 
(j) determines that the intruder is illegal and the second report 
controller means (k) informs the restraint organization of the presence of 
the illegal intruder in the form of the above emergent report data, which 
results in that its reliability becomes very high. 
In the case where the receiver previously installed in the restraint 
organization is such an image receiver as a facsimile machine and the 
second report controller means (k) forms, as the emergent report data to 
be transmitted, image data (including character data, of course) converted 
in a predetermined manner based on the image data demodulated from the 
monitor data, the identification data extracted from the monitor data and 
the time data contained in the monitor data, the contents of the emergent 
report data becomes very informative, which can contribute, for example, 
to the arrest of the illegal intruder. 
Further, in the case where it is desired to transmit such emergent image 
report data, in particular, the concentrator further includes (l) 
identification data related database for previously registering therein 
related data indicative of addresses of buildings located within the 
monitor regions, location telephone numbers of the monitor regions in the 
buildings and features of the monitor regions in association with the 
identification data and also includes (m) identification data processor 
means for retrieving the corresponding related data from the 
identification data related database on the basis of the extracted 
identification data, to add even the retrieved identification related data 
to the emergent report data formed through the second report controller 
means (k), whereby the contents of the emergent report data becomes 
further informative.

DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring to FIG. 1, there is shown a crime prevention monitor system in 
accordance with an embodiment of the present invention. 
As shown in FIG. 1, the system of the present embodiment comprises a 
terminal apparatus 100, a concentrator 200 and a report receiver 300, 
which are all interconnected by means of transmission lines PT1 and PT2. 
The terminal apparatus 100 is installed in regions of a house or building 
to be monitored, such as an office, a shop, a school, a bank or a factory. 
Installed for each of zones or regions WZ to be monitored or watched is a 
crime prevention sensor 101 for detecting an intruder entering into the 
associated region; such as a thermal radiation sensor or an infrared ray 
sensor; and a monitor camera 102 for photographing the intruder; such as 
an industrial television (ITV) camera, so that a detection signal obtained 
from the crime prevention sensor 101 and an image signal obtained from the 
monitor camera 102 are input to the associated terminal apparatus 100. 
The concentrator 200, is installed, for example, in a security company or 
the like, and collectively receives monitor data reported from the 
terminal apparatuses 100 provided in a multiplicity of monitor regions 
through the transmission line PT1 and generally monitors on a remote 
control basis the presence or absence of an illegal intruder entering into 
the regions WZ under monitor. The concentrator 200, when determining the 
presence of an intruder in the monitor region WZ on the basis of its 
monitor result, informs the report receiver 300 of the fact through the 
transmission line PT2. 
The report receiver 300 is disposed in a restraint organization, such as a 
police station. It is assumed, that image transfer based on facsimile can 
be carried out between the concentrator 200 and the report receiver 300, 
that is, image data relating to the face picture of the intruder including 
character data indicative of the address and telephone number of the 
monitor region in question, an intrusion time, the features of the monitor 
region is sent as its report data on a facsimile transmission basis to the 
restraint organization. 
Detailed explanation will then be sequentially made as to the specific 
structures of these devices of FIG. 1 and operations thereof. 
When a person enters into the monitor region WZ shown in FIG. 1, the 
presence of the intruder is detected by the crime prevention sensor 101, 
regardless of the fact that the person entering into the monitor region WZ 
is authorized or not. A detection signal issued from the crime prevention 
sensor 101 is sent to a monitor controller 103 of the terminal apparatus 
100. 
The monitor controller 103 is switched to its watch set or release state in 
response to a received signal S/R which changes its state according to the 
watch setting or resetting operation of a suitable switch means (not 
shown). Assuming that the monitor controller 103 is in its watch set 
state, that is, a dweller or a company employee of the monitor region WZ 
previously sets the switch means in its set mode to guard the monitor 
region WZ in the nighttime, the monitor region WZ is remotely watched or 
monitored under control of the concentrator 200. Then the monitor 
controller 103, when responding to a reception of the detection signal 
from the crime prevention sensor 101, issues a start signal E to the 
monitor camera 102 and a first report controller 104 to put the camera and 
controller in their active state. 
The monitor camera 102 thus set in its active state starts its 
photographing operation of an intruder entering into the monitor region WZ 
and sends an intruder's image signal IM to an image processor 105. In this 
connection, the monitor camera 102 can complete its photographing 
operation over the intruder in a time period of several scores of seconds 
even in the nighttime. 
The image processor 105 receiving the image signal IM in this manner has a 
well known structure which includes various sorts of devices including, 
for example, an analog/digital (A/D) converter for converting the image 
signal IM into predetermined image data signal and an image memory for 
temporary storage. The image signal IM indicative of the intruder taken by 
the monitor camera 102 is processed at the image processor 105 into image 
data IMD that is processable by a computer or the like. The image data IMD 
is then sent from the image processor 105 to the first report controller 
104. 
Meanwhile, the first report controller 104; when controllably put in its 
active state by the start signal E received from the monitor controller 
103 as in the monitor camera 102, calls the concentrator 200 through the 
transmission line PT1, during which the first report controller 104 
receives an identification (ID) number of the monitor region WZ in 
question from a monitor-region ID setter 106, receives from a timer 107 
time data T indicative of a time when receiving the start signal E, i.e., 
when the crime prevention sensor 101 detects the intruder, also receives 
the image data IMD indicative of the intruder image from the image 
processor 105, and generates monitor data on the basis of these input 
data. When the first report controller 104 secures a logical 
interconnection to the concentrator 200 through the aforementioned calling 
operation, the first report controller 104 sends the generated monitor 
data to the concentrator 200. 
The monitor-region ID setter 106 sets the unique ID number for the monitor 
region WZ on a hardware basis by means of dip switch or the like or on a 
software basis by means of an ID number setting program, while the timer 
107 is a known device which outputs time data based on the oscillating 
operation of a crystal oscillator or the like. Any of the monitor-region 
ID setter 106 and timer 107 may be incorporated in the monitor controller 
103 or in the first report controller 104. 
Any of the constituent parts of the terminal apparatus 100 is arranged so 
that a backup power supply 110 can back up the necessary power supply of 
the constituent parts at all times to maintain their functions even in 
case a power failure or the like causes stoppage of their power supply. 
The concentrator 200, when the first report controller 104 of the terminal 
apparatus 100 transmits the monitor data to the concentrator 200 through 
the transmission line PT1, receives the monitor data at a receive 
controller 201 therein. 
The receive controller 201, in response to the call from the first report 
controller 104, controls the transmission line PT1 to secure a logical 
interconnection to the associated terminal apparatus. Thereafter, the 
receive controller 201, when receiving the above monitor data from the 
first report controller 104 of the terminal apparatus, demodulates the 
received monitor data into a demodulated signal and outputs the 
demodulated signal to an ID extractor 202, a time data extractor 203 and 
an image demodulator 204, respectively. 
More specifically, the ID extractor 202 extracts the aforementioned ID 
number data ID of the monitor region WZ having the intruder entered 
therein from the demodulated signal, the time data extractor 203 extracts 
the aforementioned intrusion time data T from the demodulated signal, and 
the image demodulator 204 extracts the aforementioned image data part of 
the intruder from the demodulated signal, demodulates the image data that 
is usually subjected to a compression for the transmission into such image 
data IMD as to be processable by the computer. The demodulated image data 
IMD is then sent to a display 205 where the intruder's behaviors are 
displayed thereon as a real time image, and also sent to an image collator 
206 to be collated with image data previously registered in an image 
database 207. 
The image database 207 previously registers therein image data concerning 
authorized persons with respect to different monitor regions. The image 
collator 206 collates the above demodulated image data IMD with all image 
data of the authorized persons of one of the monitor regions specified by 
the ID number data ID extracted through the ID extractor 202 among the 
image data previously registered in the image database 207, and when 
finding any coincidence between the demodulated image data IMD and the 
authorized persons image data, outputs a matching signal M indicative of 
the coincidence and when failing to find any coincidence therebetween, 
outputs a non-matching signal NM indicative of the non-coincidence to a 
concentrator manager 208. An example of the image collating operation of 
the image collator 206 and image database 207 will be further detailed by 
referring also to FIG. 2. 
In the illustrated example, it is assumed that the image data previously 
registered in the image database 207 are indicative of the face pictures 
of the respective authorized persons, and that one of the previously 
registered image data retrieved by the image collator 206 on the basis of 
the extracted ID number data ID, that is, the image data of the authorized 
persons being registered with respect to the monitor region WZ specified 
by the ID number data ID is shown by retrieved data 207Z in FIG. 2. 
Then, the image collator 206 retrieves the image data 207Z, temporarily 
stores the retrieved data 207Z in a suitable image memory (not shown), and 
then sequentially performs the following operations (1) to (6). 
(1) Extracts several still images from the demodulated image data IMD 
through a still image extractor 2061. 
(2) Further extracts face parts from the extracted still images through a 
face part extractor 2062. 
(3) Combines the extracted face part images through a front face model 
generator 2063 to generate a front face picture model. 
(4) Reads in picture data (face picture data) of the retrieved data 207Z, 
overlaps the read-in picture on the generated front face picture model, 
and extracts contours and features between the overlapped images through a 
contour/feature extractor 2064. 
(5) Judges at a judger 2065 on the basis of the extracted contours and 
features whether or not these are matched, that is, the overlapped images 
indicate one of the authorized persons. 
(6) Repeats the above operations (4) and (5) over all the image data of the 
retrieved data 207Z. 
When the judger 2065 determines all non-coincidences, that is, when the 
judger determines that the person indicative of the demodulated image data 
IMD does not correspond to any of the authorized persons of the associated 
monitor region WZ, the image collator 206 outputs to the concentrator 
manager 208 the non-matching signal NM together with face picture model 
data IMDF generated through the front face model generator 2063. On the 
other hand, the determination of the presence of at least one coincidence 
at the judger 2065 causes the image collator 206 to output to the 
concentrator manager 208 the matching signal M together with the generated 
face picture model data IMDF. It is assumed in the illustrated example 
that the person indicative of the image data IMD is an illegal intruder 
and the image collator 206 issues the non-matching signal NM. In this 
connection, such image collating operation as mentioned above per se can 
be completed in a short time of at most about 60 sec. through the 
introduction of an exclusive computer. 
Meanwhile, in the concentrator 200, concurrently with the above image 
collating operation, retrieval for the related data is carried out through 
an ID data processor 209 and an ID related database 210 on the basis of 
the ID number data ID extracted at the ID extractor 202. 
In more detail, the ID related database 210 previously registers therein 
related data indicative of addresses of buildings in these monitor regions 
and the location, telephone number and features of the monitor region in 
question in the building in association with the ID number data ID. The ID 
data processor 209 retrieves related data IDINF from the ID data related 
database 210 on the basis of the extracted ID number data ID. The 
thus-retrieved related data IDINF on the associated monitor region WZ is 
also output to the concentrator manager 208 through the ID data processor 
209, together with its ID number data ID. 
The concentrator manager 208 receives the non-matching signal NM (or 
matching signal M) from the image collator 206, receives the ID number 
data ID and the related data IDINF from the ID data processor 209 and also 
receives the extracted time data T from the time data extractor 203; and 
generally processes these received data in accordance with, for example, 
such a procedure as shown in FIG. 3. 
More specifically, the concentrator manager 208 monitors the matching and 
non-matching signals M and NM received from the image collator 206 (step 
S1 in FIG. 3). The concentrator manager 208, when receiving the 
non-matching signal NM, as in the illustrated example (step S2 in FIG. 3), 
immediately starts a second report controller 211 (step S3 in FIG. 3) and 
sends the received intruder's face picture model data IMDF, ID number 
related data IDINF and time data T to the second report controller 211 
(step S4 in FIG. 3). 
The concentrator manager 208, even when receiving the natching signal M 
(step S2 in FIG. 3) by a guard or the like working in the concentrator 
center providing a forced reporting operation through a console 212 (step 
S3 in FIG. 3), immediately starts, as in the above case, the second report 
controller 211 (step S3 in FIG. 3) and sends the received intruder's face 
picture model data IMDF, ID number related data IDINF and time data T to 
the started second report controller 211 (step S4 in FIG. 3). That is, in 
the system of the present embodiment, since the intruder's behaviors are 
monitored on the display 205, even in the case where the matching signal M 
is issued from the image collator 206, when the guard judges that the 
intruder's behaviors are clearly suspicious, he or she can give the forced 
reporting operation through the console 212, whereby erroneous monitoring 
can be suppressed to its minimum level. 
Otherwise, when the matching signal M is issued from the image collator 206 
(step S2 in FIG. 3) and no forced reporting operation is carried out (step 
S5 in FIG. 3), the concentrator manager 208 starts its monthly report 
processing while not starting the second report controller 211. 
The `monthly report processing` as used herein refers to such processing 
that monitored results for every month are reported to a client who asked 
the crime prevention of his territory under control of the present system. 
In more detail, in the illustrated example, the concentrator manager 208, 
for example, generates monthly report data including the ID number data, 
time data and if necessary, intruder's face picture model data with 
respect to the different monitor regions on the basis of the received ID 
number data ID, time data T and if necessary, intruder's (entered 
person's) face picture model data IMDF (step S6 in FIG. 3), registers the 
generated monthly report data in a monthly report database 213 (step S7 in 
FIG. 3). When receiving an output request for the specified monitor region 
from the console 212 (step S8 in FIG. 3), the concentrator manager 208 
reads out the monthly report data associated with the specified monitor 
region from the monthly report database 213 and outputs it in the form of 
data having a predetermined format through an output device 214, such as a 
printing device or printer (step S9 in FIG. 3). 
Meanwhile, the second report controller 211, when started by the 
concentrator manager 208, calls the report receiver 300 located in such a 
restraint organization as a police station, forms the aforementioned 
monthly report data on the basis of the received intruder's face picture 
model data IMDF, ID number related data IDING and time data T and 
transmits the formed report data to the report receiver 300 through the 
secured transmission line PT2. The transmission of the report data through 
the transmission line PT2 is on a facsimile transmission basis, as already 
mentioned above. 
When the report data is transmitted to the report receiver 300 in this 
manner, the report receiver 300 in turn receives the report data at a 
receive processor 301 therein. The report data is immediately demodulated 
at a received data demodulator 302 and then output to an output device 
303. The contents of the print-out report data is shown in FIG. 4. 
As shown in FIG. 4, the system transmits on a facsimile transmission basis 
from the report receiver 300 to the police station such report data that, 
in addition to a report date and a reporter name (security company), 
includes the following data (A), (B) and (C). 
(A) ID number related data: 
The address of the monitor region into which the intruder entered. 
Its office name (such as householder, shop name, school name or company 
name). 
Telephone number. 
Features of the monitor region (such as room locations, surrounding 
circumstances or environment). 
(B) Time data: 
Intrusion time. 
(C) Intruder's face picture model data: 
Image data indicative of the generated intruder's face picture model. 
The police station, when receiving the report data from the report receiver 
300, can immediately grasp the contents correctly and cope with it 
(intruder's arrest). 
Although the system has been arranged to send report data including the ID 
number related data, time data and intruder's face picture model data on a 
facsimile transmission basis, other suitable transmission technique and 
medium may be employed. For example, a suitable display unit under control 
of a computer can be installed even at the side of the report receiver 300 
and the report data can be transmitted by an image transmission technique 
other than the facsimile transmission technique to be displayed on the 
display unit. In addition, the data to be transmitted to the report 
receiver 300 is not limited only to the image data but may be of a voice 
or character type as necessary. In particular, only when the system judges 
through the aforementioned image collating operation that the intruder 
does not correspond to any of the authorized persons of the associated 
monitor region, the system determines that the intruder is an illegal 
person and informs the restraint organization of the presence of the 
invader. As a result, even when the latter technique for not necessarily 
sending the image data to the report receiver 300 is employed, the report 
can be made very high in reliability. 
Though it is assumed that the transmission lines PT1 and PT2 are general 
public lines in the system of the foregoing embodiment, other suitable 
private lines or radio lines may be employed. 
Further, in the system of the foregoing embodiment, when the non-matching 
signal NM is issued from the image collator 206, this immediately causes 
the second report controller 211 to be started to report the presence of 
the illegal intruder to the restraint organization. However, a telephone 
automatic transmitter means for automatically calling a specified 
telephone set may be provided in the concentrator 200 so that, when the 
non-matching signal NM is issued, the telephone automatic transmitter 
means can automatically call the telephone set previously installed in the 
associated monitor region, and only when failing to receive a response to 
the calling from the intruder even after passage of a predetermined time, 
can cause the report controller 211 to be started. The employment of such 
an arrangement enables further suppression of an erroneous report 
possibility, from the viewpoint that the authorized person usually answers 
to such a call without any hesitation and that, when the aforementioned 
image collating operation is considerably high in accuracy but the 
intruder happened to be photographed in undesirable photographing 
conditions (as when intruder's face could not be photographed), its 
accurate collation becomes difficult. 
The above explanation has been made on the assumption that the terminal 
apparatus 100 comprising the constituent parts 103 to 107 (including the 
monitor controller 103, the first report controller 104 and the timer 107) 
is provided for one monitor region having the crime prevention sensor 101 
and the monitor camera 102 in a one-to-one (1:1) relation, but one 
terminal apparatus 100 may be provided for N (which is an integer of 2 or 
higher) of such monitor regions. In other words, so long as the monitor 
controller 103 can recognize one of the crime prevention sensors which 
issued the detection signal and one of the monitor cameras to be started 
and the ID number data of one of the monitor regions having the recognized 
crime prevention sensor and monitor camera installed therein can be 
incorporated into the aforementioned monitor data which is to be formed 
through the first report controller 104, even in the event where a 
plurality of monitor regions are previously registered for one subscriber 
(monitor client), the single terminal apparatus (comprising the 
constituent parts 103 to 107) may be commonly used with respect to the 
plurality of registered monitor regions each having the crime prevention 
sensor and monitor camera alone installed therein. 
Further, in order to meet the circumstances of the respective monitor 
regions, the terminal apparatus 100 may be arranged to perform such 
reporting functions (1) to (5) other than the aforementioned reporting 
function as follows. 
(1) Informs the concentrator 200 of the monitor data of the associated 
monitor region at every time previously set through a timer or the like. 
(2) Performs monitor releasing operation over the monitor controller 103 
(Sends a rest signal R to the monitor controller 103). 
(3) Informs the concentrator 200 of the monitor data of the associated 
monitor region when the crime prevention sensor 101 detects an intruder, 
regardless of the set or reset state of the monitor controller 103. 
(4) Informs the concentrator 200 of the monitor data of the monitor region 
in question when a power failure takes place. 
(5) Informs the concentrator 200 of the monitor data of the associated 
monitor region when the power failure is recovered. 
In the present invention, the aforementioned ID number data is used as 
identification data for each monitor region, the corresponding data, such 
as its address and telephone number, is retrieved from the ID related 
database 210 of the concentrator 200 on the basis of the ID number data 
and then added to the aforementioned report data. However, for example, 
these address and telephone number may be directly used as its 
identification data and sent from the terminal apparatus to be added to 
the report data. Or the ID number data may be used but may be converted 
into related data of the corresponding address and telephone number with 
use of a simple table provided, e.g., in the concentrator, and the 
converted data may be added to the report data. That is, with the crime 
prevention monitor system in accordance with the present invention, the 
configuration of the ID related database 210 is not restricted to the 
illustrated specific example. 
The crime prevention monitor system of the present invention is not 
restricted to the specific arrangement of the foregoing description but 
may be modified in various ways without departing from the scope of the 
invention.