Patent Application
20100007482
1. Field of the Invention
This invention relates to security systems as used to monitor portable devices and, more particularly, to such a system with an electronic sensor that is attached to each such device.
2. Background Art
Electronic security systems are used in many retail establishments to monitor portable devices that are prone to being discretely removed from the premises at which they are displayed. Electronic devices, which continue to become more compact in size and expensive in nature, are particularly vulnerable in retail establishments whereat they are displayed in large numbers for hands-on inspection and operation by potential purchasers.
The multitude of competing manufacturers and different designs offered by each has caused displays often to be crowded with a particular type of product. For example, a single display may accommodate dozens of digital cameras made by different distributors and offered with many different features and in many different price ranges. The cost of these cameras generally warrants the investment in sophisticated electronic security systems.
In a typical retail establishment, a display of the above type will be designed with a discrete number of stations, each capable of accommodating a single device at which informational materials can be displayed to be visible in close proximity in association with the device. The security system, while normally adaptable to change the number of devices that it will accommodate, is typically set up so that the number of sensors corresponds to the number of stations. Preparatory to placing the security system in an armed state, the sensors are attached, one each, to a device at a station and are changed from an unsecured state into a secured state. This is commonly accomplished by adhering the sensor directly to the device in a manner whereby a captive actuating plunger is repositioned to change the state of the sensor.
The controller on the security system may be designed so that the system can be armed only once the active sensors are in their secured states. This feature avoids situations whereby the overall system may be armed but individual sensors remained in an unsecured state, due to improper sensor attachment or malfunction, whereby the associated devices are vulnerable to theft.
Other systems do not incorporate this feature and have controls that allow the arming of the system while certain sensors remain in place but unattached to a device at a particular station. This capability may be desirable from the standpoint that it gives greater system flexibility. That is, no special measures need be taken in the event that there are one or more stations at which there is no device displayed. At the time that the system is placed in the armed state, the controller will detect the unsecured state of one or more of the sensors and nonetheless permit arming of the system.
This latter design is particularly desirable from the standpoint of convenience and system integrity. In the absence of this feature, the system operator would be forced to make a manual adjustment, as by putting a shunt in a port accommodating the inactive sensor(s), or otherwise programming or adapting the system. This is inconvenient since often the controller for the system is placed within a closed cabinet so that it is not easily accessible, with the objectives thereby of contributing to aesthetics and avoiding controller tampering.
With this type of system, the sensor that is in the inactive state may cause a detectable alarm signal to be generated in response to the changing of the position of the plunger on the sensor with the system in the unarmed state. If for any reason, intentional or unintentional, the plunger on the inactive sensor(s) is repositioned, an alarm will be triggered. This condition may cause embarrassment to a potential customer and is an inconvenience to personnel at the particular establishment. This may cause an operator to disable the entire system, exposing the displayed devices to theft.
The main objective of designers of the above types of systems is to devise systems that are reliable in performance. Secondly, they must be “user friendly”. If the system is inconvenient to operate or has “quirks” that translate into user inconvenience, employees may be inclined to avoid arming of the system, whereby the entire collection of displayed devices is prone to being removed by a thief. In line with this latter objective, the system should be versatile enough to allow the convenient selective placement and re-placement of devices at, and removal of the same from, individual stations. If a system compromises the ability to effectively display products for potential consumers, those involved in using such systems may be tempted to bypass them, thereby negating the value of the investment in the system and exposing the associated devices to theft.
The industry continues to seek designs of security systems that effectively meet the above objectives.
In one form, the invention is directed to a security system for a portable device. The security system has a first sensor that is capable of being operatively attached to a portable device. The first sensor has a secured state and an unsecured state. The security system further has a controller that is capable of sensing the state of the first sensor and an alarm signal generator. The security system has an armed state and an unarmed state. The controller is capable of detecting that the first sensor, with the security system in the armed state, has changed from the secured state into the unsecured state and, as an incident thereof, causing the alarm signal generator to cause a detectable signal to be generated. The controller and first sensor are configured so that with the security system in the unarmed state and the first sensor changed from the secured state into the unsecured state: a) the security system can be changed from the unarmed state into the armed state after which the first sensor can be changed from the unsecured state into the secured state, whereupon the controller will detect changing of the first sensor from the secured state into the unsecured state and cause the alarm signal generator to cause a detectable signal to be generated; and b) the first sensor must be changed from the unsecured state into the secured state and maintained in the secured state for a predetermined time period before the controller, first sensor and alarm signal generator can thereafter interact to cause the alarm signal generator to cause a detectable signal to be generated in the event that the first sensor is changed from the secured state into the unsecured state, with the security system in the armed state.
The predetermined time period may be at least 15 seconds.
In one form, the predetermined time period is at least one minute.
The predetermined time period may be on the order of two minutes.
In one form, the controller and first sensor are configured so that the first sensor must be changed from the unsecured state into the secured state after the security system is changed from the unarmed state into the armed state to allow the controller and sensor to interact to cause the alarm signal generator to cause a detectable signal to be generated in the event that the first sensor is changed from the secured state into the unsecured state.
In one form, the controller and first sensor are configured so that in the event the first sensor is changed from the secured state into the unsecured state with the security system in the unarmed state and the first sensor is maintained in the unsecured state, changing of the security system from the unarmed state into the armed state will not cause the controller to cause the alarm signal generator to cause a detectable signal to be generated.
In one form, there is at least one conductive wire that electrically connects between the first sensor and the controller.
The first sensor may have a housing and an element on the housing that moves between first and second positions relative to the housing to thereby change the first sensor between the secured and unsecured states.
In one form, there is at least one sensor in addition to the first sensor that interacts with the controller in the same manner that the first sensor interacts with the controller.
In one form, the element on the housing is biased by a force towards one of the first and second positions and is captive, between a portable device to which the first sensor is operatively attached and a part of the sensor, to thereby be urged against the biasing force into the other of the first and second positions.
The first sensor and controller may communicate with each other without a hard-wired connection therebetween.
The security system may be provided in combination with a portable device to which the first sensor is operatively attached.
The portable device may be in the form of an electronic device.
The invention is further directed to a method of monitoring a portable device. The method involves providing a security system having armed and unarmed states. The security system has a first sensor with secured and unsecured states, a controller that is capable of sensing the state of the first sensor, and an alarm signal generator. The method further includes the steps of operatively attaching the first sensor to the portable article and changing the first sensor from the unsecured state into the secured state to allow the controller, with the security system in the armed state, to interact with the first sensor to cause the alarm signal generator to cause a detectable signal to be generated in the event that the first sensor is thereafter changed back into the unsecured state, only after the first sensor is maintained in the secured state for a predetermined time period.
In one form, the step of the changing the first sensor from the unsecured state into the secured state involves changing the first sensor from the unsecured state into the secured state only after the first sensor was: a) initially in the secured state with the security system armed so that it the event the first sensor is thereafter changed from the secured state into the unsecured state, the controller causes the alarm signal generator to cause a detectable signal to be generated; and b) thereafter changed from the secured state into the unsecured state with the security system in the unarmed state.
In one form, the step of changing the first sensor from the unsecured state into the secured state involves changing the first sensor from the unsecured state into the secured state only after the first sensor is maintained in the secured state for a predetermined time period of at least 15 seconds.
This predetermined time period may be at least one minute or, in another form, on the order of two minutes.
In one form, the step of providing a security system involves providing a security system with a first sensor having a housing and an element on the housing that moves between first and second positions relative to the housing to thereby change the first sensor between the secured and unsecured states.
The step of operatively attaching the first sensor to the portable device may involve operatively attaching the first sensor to a portable electronic device at a point-of-purchase display.
In
The security system 10 consists of a first sensor 14 that is capable of being operatively attached to the portable device 12. The first sensor 14 has a secured state and an unsecured state.
A controller 16 is capable of sensing the state of the first sensor 14.
The security system 10 further includes an alarm signal generator 18. The alarm signal generator 18, in response to a signal/command from the controller 16, causes a detectable signal to be generated, thereby alerting an operator of the security system 10 to a condition that requires attention.
The nature of the signal is not critical to the present invention. For example, the alarm signal generator 18 may cause a signal to be generated that is audibly or visually detectable by someone in the vicinity of the portable device 12, or remotely located therefrom. The signal might alternatively be a transmission that can be received by a portable telephone or a computer. The communication between the controller 16 and alarm signal generator 18 may be effected through a wireless or hard-wired connection.
The security system 10 has an armed stated and an unarmed state. In the unarmed state, the alarm signal generator 18 will either not cause any signal to be generated or alternatively may cause a signal to be generated that is different than one that would be generated in the event that there is a security breach with the system 10 in the armed state.
The controller 16 is capable of detecting that the first sensor 14 has changed from the secured state into the unsecured state. As an incident thereof, with the security system 10 in the armed state, the controller 16 causes the alarm signal generator 18 to cause the aforementioned detectable signal to be generated with the security system 10.
The controller 16 and first sensor 14 are configured so that with the security system 10 in the unarmed state and the first sensor 14 changed from the secured state into the unsecured state: a) the security system can be changed from the unarmed state into the armed state after which the first sensor 14 can be changed from the unsecured state into the secured state, whereupon the controller 16 will detect change of the first sensor 14 from the secured state into the unsecured state and cause the alarm signal generator 18 to cause a detectable signal to be generated; and b) the first sensor 14 must be changed from the unsecured state into the secured state for a predetermined time period before the controller 16, first sensor 14, and alarm signal generator 18 can thereafter interact to cause the alarm signal generator 18 to cause a detectable signal to be generated in the event that the first sensor 14 is changed from the secured state into the unsecured state.
It is contemplated that the invention be used in virtually any environment in which portable devices are vulnerable to being taken without detection, exemplary of which is the point-of-purchase display shown at 22 in
With the security system 10′ shown in
As noted above, typically a point-of-purchase display will have a number of stations, with three such stations shown in
In the event that there are more stations 24, 26, 28 available then there are devices 12′, 12″, 12′″ to display, one or more of the stations 24, 26, 28 may not at all times have a device thereon being operatively monitored by the security system 10′.
Systems have been designed in the past so that once set up and armed with “X” number of devices, changing of the display to operatively interact less than the X number of devices with the security system creates problems for the system operator. Certain of these problems will be described with respect to the prior art arrangement shown at 36 in
The controller 52 and sensors 48, 50 have commonly been heretofore designed so that in the event the system is set up as in
Avoidance of these conditions has heretofore required either that the inactive sensor 48, 50 be placed in the secured state without a product associated therewith, or the controller 50 be reprogrammed to take the inactive sensor 48, 50 out of circuit. Either of these activities requires operator intervention that is inconvenient and may be sufficiently burdensome that the operator may opt to leave the entire system unarmed to avoid false alarm signals.
According to the invention, the controller 16 and first sensor 14 are configured so that no alarm signal is caused to be generated by the inactive first sensor 14 until after it is changed from the unsecured state into the secured state and maintained in that condition for a predetermined time period. To provide the greatest flexibility, the system is designed in one form so that this may be done with the system 10 either in the armed or unarmed states. The ability to incorporate the inactive sensor, with the system armed, allows adding of devices to a display without burdensome inconvenience. That is, once the system 10 is armed, the user can modify the security system 10 to add a device without shutting the system down or effecting any reprogramming.
In one preferred form, the controller 16 is designed to arm sensors that were previously in circuit and changed from an unsecured state into a secured state and back into the unsecured state as through the separation of a device therefrom. However, it is not a requirement that the system be operational only after the sensor state is changed back and forth, as indicated above.
The predetermined time period/delay, that is described above, may vary considerably in duration. It is preferably at least 15 seconds and may be greater than one minute. In one preferred form, the time period is on the order of 2 minutes. Any of these time durations is likely to avoid any inadvertent generation of a false signal, as by an individual's intentionally or unintentionally changing the state of an inactive sensor.
As noted above, the controller 16 and first sensor 14 may be configured so that the first sensor 14 must be changed from the unsecured state into the secured state after the security system 10 is changed from the unarmed state into the armed state to allow the controller 16 and sensor 14 to interact to cause the alarm signal generator to cause a detectable signal to be generated in the event that the first sensor 14 is changed from the secured state into the unsecured state.
In any event, it is desirable that the controller 16 and first sensor 14 are configured so that in the event the first sensor 14 is changed from the secured state into the unsecured state with the security system in the unarmed state and the first sensor is maintained in the unsecured state, changing of the security system 10 from the unarmed state into the armed state will not cause the controller 16 to cause the alarm signal generator 18 to cause a detectable signal to be generated.
The schematic depiction of the interaction of the first sensor 14 and controller 16 is intended to encompass wired and wireless communication between these components. As shown in
The first sensor 14 may have virtually an unlimited number of different forms, well known to those skilled in the art. As just one example, as shown in
In one form, there is a biasing element 64 that exerts a force that normally urges the element 60 to the first, solid line position. With the sensor 14 operatively attached to the portable device 12, the element 60 is placed in a captive relationship. Relative movement of the housing 58 towards the device 12 causes the element 60 to move under a captive force from the first, solid line position, into the second, dotted line position against a force developed by the biasing element 64.
The sensor 14 may be operatively attached to the device 12 by any type of fastener. One exemplary form is a double-sided adhesive layer 66, as shown in
The invention contemplates a method of monitoring a portable device using a system of the same general type described above. The method is describe in flow diagram form initially in
As shown at block 70, the first sensor is operatively attached to a portable device.
As shown at block 72, the first sensor is changed from the unsecured state into the secured state to allow the controller, with the security system in the armed state, to interact with the first sensor to cause the alarm signal generator to cause a detectable signal to be generated in the event that the first sensor is thereafter changed back into the unsecured state, only after the first sensor is maintained in the secured state for a predetermined time period.
In one form, as depicted in flow diagram form in
The foregoing disclosure of specific embodiments is intended to be illustrative of the broad concepts comprehended by the invention.
