Message packet protocol for communication of remote sensor information in a wireless security system
First Claim
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1. A method for transmitting information via a message packet from a transmitter to a system controller in a security system, the method comprising the steps of:
- transmitting a front porch pulse;
transmitting a set of synchronization bits;
transmitting a start bit;
transmitting information bits;
transmitting a first stop bit;
transmitting a set of error detection bits; and
transmitting a second stop bit.
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Abstract
In a security or monitoring system having a system roller and one or more sensor/transmitters, information is sent from the transmitter to the system controller in message packets. As improved message packet protocol provides a front porch pulse, a set of synchronization bits, a start bit, a set of information bits, a first stop bit, a set of error detection bits, and a second stop bit.
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Citations
13 Claims
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1. A method for transmitting information via a message packet from a transmitter to a system controller in a security system, the method comprising the steps of:
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transmitting a front porch pulse; transmitting a set of synchronization bits; transmitting a start bit; transmitting information bits; transmitting a first stop bit; transmitting a set of error detection bits; and transmitting a second stop bit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for sending information from a transmitter to a system controller in a security system, comprising:
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generating one or more message packets each time the transmitter receives a change in status condition from an associated sensor, wherein the message packet includes a front porch pulse, a set of synchronization bits, a start bit, a set of data bits, a set of trigger count bits for uniquely identifying each of the message packets, a low battery bit for indicating a low battery level condition associated with the transmitter, a set of input bits for indicating a condition of a sensor associated with the transmitter, a set of parity bits, a programmable bit for flexible assignment to one or more of a variety of transmission tasks, a first stop bit, a set of error detection bits, and a second stop bit; and sending each of the message packets from the transmitter to the system controller.
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11. In a security system comprising a system controller and a plurality of remote transmitters with associated sensors, wherein each of the transmitters sends information to the system controller when an associated one of the sensors detects a change in condition, the improvement comprising a method for transmitting the information from the transmitter to the system controller via a message packet, the method comprising the steps of:
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transmitting a front porch pulse, transmitting a set of synchronization bits, transmitting a start bit, transmitting a set of information bits, transmitting a first stop bit, transmitting a set of error detection bits, and transmitting a second stop bit. - View Dependent Claims (12)
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13. A method for transmitting information via a message packet from a transmitter to a system controller in a security system, wherein the security system includes a sensor associated with the transmitter, the method comprising the steps of:
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transmitting a front porch pulse; transmitting a set of synchronization bits; transmitting a start bit; transmitting a set of data bits; transmitting a set of trigger count bits for uniquely identifying each of a plurality of the message packets; transmitting a low battery bit for indicating a low battery level condition associated with the transmitter; transmitting a set of input bits for indicating a condition of the sensor associated with the transmitter; transmitting a set of parity bits; transmitting a first stop bit; transmitting a set of error detection bits; and transmitting a second stop bit.
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Specification