| Systel Development & Industries Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20100052731 | MULTIPLE CHANNEL BALLAST AND NETWORKABLE TOPOLOGY AND SYSTEM INCLUDING POWER LINE CARRIER APPLICATIONS - Control systems and methods for independent control of power systems, particularly lighting network branches, and separate control of individual branch components. Multi-branch systems comprise independently controllable branches that inter-communicate via PLC communications. In each branch, components such as ballasts, local control units, sensors, actuators, and repeaters, may exchange commands and queries independently of a branch remote control unit (BRCU). Alternatively, a BRCU may manage or arbitrate communications, or interact with other BRCUs, other control units and external management systems. Ballasts include a multi-channel ballast that enables close-loop control of individual fixtures, or of individual dimmable or non-dimmable lamps within a fixture. The close-loop control is facilitated by sampling circuits/sensors co-located with each controlled fixture or lamp. All controllers are preferably implemented using an integrated digital controller. The PLC communication is preferably carried out by a direct spread spectrum method that eliminates side lobes from a cross-correlation function, using an anti-collision protocol. | 03-04-2010 |
| 20090299500 | SYSTEM ON CHIP FOR DIGITAL CONTROL OF ELECTRONIC POWER DEVICES - An integrated digital controller for controlling power electronic devices and method of its use, comprises an analog-to-digital converting scanner module for scanning analog data inputs and used to create digital data correlated with the analog inputs, a loop control module operative to receive the digital data ad used for controlling at least one control loop, and a pulse sequence generator (PSG) module used for generating a variety of fast, configurable, event-driven pulse sequences in cooperation with the PSG and scanner modules. The controller comprises optionally a CPU for managing various tasks and coordinate between the modules, means to create the events, and means for configuration and reconfiguration on-the-fly. The controller is preferably integrated in a semiconductor chip. | 12-03-2009 |
| 20080205104 | DIGITAL POWER CONTROLLER - A programmable digital power controller for gas discharge devices such as fluorescent lamps or other devices using all digital internal and external programmable controls. A specific ASIC is described. A gate array and microcomputer share parallel functions with fast sub-functions carried out by the gate array and slower sub-functions carried out by a micro-processor. Circuits are provided for automatic shut down when a high frequency ground fault is detected; for connecting the filaments of multiple gas discharge devices in a series/parallel circuit in a manner that power for a particular device is disabled when that device is removed from the circuit; for driving the load as close to resonance as possible but in an inductive mode; and for developing a dead time between high side and low side switches which is related to transformer current, switch current, bridge voltage or bridge voltage dv/dt. | 08-28-2008 |
