Honeywell International Inc.

Theodore A White

Thomas Paul Schmit

Lewin A Edwards

Azadeh Solhjoo

Stanley W Albrechtsen

A wireless product for wireless communication is constructed for spread spectrum operation within a required channel bandwidth where an RF signal for transmission in the channel is divided into sub-channels, each of which is less than the minimum channel bandwidth permitted by FCC regulations in order to realize improved transmission characteristics and greater flexibility in transmission timing and synchronization. The wireless product includes a controller for controlling system operation. During operation, the RF signal portion is less than the minimum channel bandwidth required by said regulations thus dividing the channel bandwidth to form N sub-channels, and setting the bandwidth of the RF signal to be substantially equal to the sub-channel bandwidth. The RF signal portion being transmitted in each of the N sub-channels.

Adaptive bandwidth, multi-channel digital modulation

A method for synchronizing a security system control panel and a sensor. The control panel and the sensor each have a transceiver. The control panel monitors a publicly broadcast signal for an time signal, periodically receives the time signal, calculates a frequency hopping index pointer using the time signal and accesses a frequency hopping table using the frequency hopping index pointer. The frequency hopping table is used by the control panel to determine when to hop between multiple receiving channels and which of the receiving channels to hop. The sensor wakes up from a standby mode when the sensor determines that the sensor is to send data, receives the publicly broadcast signal that includes a time signal, selects the channel that the control panel is actively receiving data using the time signal and transmits the data to the control panel using the selected channel.

Method for synchronizing frequency-hopping short-range radio devices

A system for indicating an end of a life cycle time period for a device which may include a sensor device or detector for measuring an environmental condition. A control device communicates with the device and includes a programmable timing mechanism for measuring a life cycle time period. The control device initiates an end of life cycle indicator such as a fault message after the life cycle time period has elapsed. The life cycle time period may be measured from a date of manufacture of the device. The life cycle time period may also be measured from a date of installation of the device when the date of manufacture of the sensor device is unknown. In the case of sensor devices or detectors an environmental condition for measuring by the detector may include carbon monoxide levels in an enclosed area where the device is a respective carbon monoxide detector.

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Norwalk, CT, United States of America

Theodore A White