Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2000-02-28
2002-08-13
Wu, Daniel J. (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S541000, C340S426110, C340S429000, C340S937000, C340S539230, C340S574000, C348S143000, C348S152000, C348S153000, C348S154000, C348S155000
Reexamination Certificate
active
06433683
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to alarm systems and, more specifically, to an alarm system which transmits audio and video signals of the enclosure to a remote location by means of wireless technology when said alarm system is triggered by an alarm sensor. The transmission of the audio visual signal will continue until the condition which triggered the alarm sensor ceases or until the alarm system is reset by the remote location.
2. Description of the Prior Art
There are other alarm system devices designed for transmitting signals to remote sites about predefined alarm conditions. Typical of these is U.S. Pat. No. 4,262,283 issued to Chamberlain et al. on Apr. 14, 1981.
Another patent was issued to Papain on Jul. 24, 1990 as U.S. Pat. No. 4,943,799. Yet another U.S. Pat. No. 5,319,698 was issued to Glidewell et al. on Jun. 7, 1994 and still yet another was issued on Sep. 5, 1995 to Sakai et al. as U.S. Pat. No. 5,448,320.
Another patent was issued to Rodhall et al. on Oct. 31, 1995 as U.S. Pat. No. 5,463,595.
U.S. Pat. No. 4,262,283
Inventor: Ian C. Chamberlain et al.
Issued: Apr. 14, 1981
An alarm system for transmitting alarm information via telephone lines has a plurality of alarm transmitters which are located at subscribers' premises and are adapted to transmit signals indicative of the state of alarms associated with the transmitters along telephone lines to associated receivers. The receivers are located at one or more local exchanges and the receivers at a local exchange are all connected to a local processor. The or each local processor is connected to a central processor which can direct alarm information to one of a number of terminal stations. The local processors continuously scan the outputs of the receivers. When a local processor detects a signal indicative of an alarm condition it transmits a signal coded with the subscriber identity and destination for the alarm information to the central processor which routes the alarm message to the appropriate terminal station. Each transmitter produces a carrier wave which is modulated with one or more other frequencies according to the state of the alarm being monitored.
U.S. Pat. No. 4,943,799
Inventor: Papain
Issued: Jul. 24, 1990
A portable alarm system includes a compact portable sealed housing having an electronic alarm control circuit therein. An electrical a.c. cord supplies power to the control circuit and plugs into the housing. A telephone jack connects a telephone circuit to a dialer circuit within the control circuit. A digital key pad is secured to the housing and has a plurality of switches actuable exteriorly of the housing whereby to program the control circuit by a lessor person and for actuating or deactuating the control circuit by a lessee user person. A receiver circuit is also provided in the housing and is connected to the control circuit. One or more wireless infrared detectors are detachably secured to the housing and positioned to detect moving objects within an environment to be protected. The detectors have infrared transmitters, of different frequencies, and transmit alarm signals to the receiver. The receiver has a first channel which is responsive to a first detector and is connected to the control circuit through a delay circuit so that the control circuit only switches to an alarm state to generate an alarm code on the telephone line after a predetermined time delay. The second channel of the receiver has no delay circuit. A siren is connected to the control circuit and secured to the housing to generate an audible local alarm upon activation of the control circuit to the alarm state.
U.S. Pat. No. 5,319,698
Inventor: Glidewell et al.
Issued: Jun. 7, 1994
A security system for detecting and signalling the presence of abnormal security or hazardous conditions, such as unauthorized entry, glass breakage, fire, smoke, high water level, in individual units, such as a boat, a recreational vehicle, an automobile, which are located or stored in a given security area. The security system comprises sensor units which, when actuated, transmit coded signals through the atmosphere which identifies each sensor unit and the individual unit on which it is located. A receiver on the individual unit recognizes only the coded signals from sensor units which are on the same individual unit as the receiver. A coded output signal is provided to a slave transmitter on the individual unit which identifies the particular sensor unit which was actuated. The slave transmitter provides a coded transmission signal to a local security station which identifies the particular sensor unit which was actuated and the individual unit where the actuated sensor unit resides. The local security station activates an alarm and dials a sequence of telephone numbers to provide a verbal alarm.
U.S. Pat. No. 5,448,320
Inventor: Sakai et al.
Issued: Sep. 5, 1995
A automatic surveillance camera equipment contains an infrared ray detecting sensor having a plurality of sensing zones and for detecting an intruder within a watching area and transmitting its signal to a control device, a control device for sending a command signal to a camera unit in response to the signal from the infrared ray detecting sensor, a camera unit for supplying a response signal to a camera in response to the command signal from the control device, a camera for synchronizing a strobe and a camera shutter each other by the response signal from the camera unit, automatically shooting, and automatically rewinding a film simultaneously together in a protective case, and is intended to perform photography of an intruder on each of the sensing zones of the infrared sensor when the intruder enters the watching area. An alarm system is directly communicated to the outside through a telephone line to transmit a signal.
U.S. Pat. No. 5,463,595
Inventor: Rodhall et al.
Issued: Oct. 31, 1995
A security system (
10
) suitable for use in monitoring property at an outdoor site that includes a portable housing (
12
) that supports a motion detector (
14
) for sensing motion within a detection zone. The security system further includes an ultrasonic transducer (
74
) and several alarm generators capable of repelling a human intruder, including a high intensity illumination source (
18
), high decibel siren (
82
), strobe light (
19
), and a speaker (
78
) for transmitting a prerecorded message. When an intrusion is initially detected by the motion detector, the ultrasonic transducer is activated to emit an ultrasonic signal that is irritating to nonhuman animals, thus clearing the detection zone of nonhuman intruders. If after sounding of the ultrasonic transducer motion is still detected, one or more of the alarms is activated. Additionally, an automatic telephone dialer (
86
) may be included in the system and activated by the system as another type of alarm, in response to detected intrusion. The system is integrated within the portable housing and is resistant to false alarms, making it suitable for use in monitoring property stored at an outside site. A method for utilizing the security system to protect property is also disclosed.
While these alarm systems may be suitable for the purposes for which they were designed, they would not be as suitable for the purposes of the present invention, as hereinafter described.
SUMMARY OF THE PRESENT INVENTION
While there are numerous alarm system in existence which use telephone lines as a means for alerting a remote monitoring location of an alarm condition, it is well known that experienced burglars will cut or impede transmission lines before breaking in. Also, there are transmission line problems which increase due to the aging of the twisted wire pair system. Even with the advent of fiber optic cables the problem still exists that any hardwired system can be impeded from generating alarm signal by cutting the transmission lines.
With this in mind, it has become evident that the only secure alarm system is one which creates a security zone around the alarm tra
Nguyen Tai T.
Robinson Carl
Wu Daniel J.
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