Landis+Gyr Innovations, Inc.
|Landis+Gyr Innovations, Inc. Patent applications|
|Patent application number||Title||Published|
|20130343430||METHODS AND SYSTEMS FOR DISTRIBUTING BROADCAST MESSAGES ON VARIOUS NETWORKS - Methods and systems for sending a broadcast message in frequency hopping and other systems. Instead of sending a complete message separately to each device, a relatively small packet or “chirp” is sent. These chirps are either targeted at known devices or sent in a manner to sweep the RF band. Devices that hear the chirps get information about the channel and/or time that the broadcast data will be sent. These devices then listen for the broadcast data as instructed, e.g., at the specified time on the specified channel. A system may alternatively, or in addition, use a scheduled hopping sequence break as a broadcast moment. Such a broadcast moment can be scheduled to periodically interrupt the node hopping sequences so that, at such times, many or all nodes are scheduled to be on the same channel for potential broadcasts.||12-26-2013|
|20130285833||TAMPER DETECTION FOR PULSE-PRODUCING DEVICE - Systems and methods for detecting tampering with a pulse-producing component of an electrical device are disclosed. An example electrical device includes a pulse-producing circuit and a tamper detection circuit. The pulse-producing circuit is configured for generating at least one pulse. The pulse-producing circuit includes a pulse interface via which the at least one pulse is communicated from the pulse-producing circuit. The tamper detection circuit is electrically connected to the pulse interface. The tamper detection circuit can be connected between a pulse-counting device and the pulse interface. The tamper detection circuit is configured for communicating the pulse to the pulse-counting device via at least one electrical path in the absence of a tampering condition. The tamper detection circuit is also configured for simulating damage to the pulse interface by modifying the at least one electrical path in response to the presence of the tampering condition.||10-31-2013|