Method for communication according to a TDMA protocol between a master device and at least one slave device
AssigneeSafran
InventorsPatrick Thomas, Raouia Ghodhbane
Life of this patent
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Abstract
Disclosed is a method for communication, according to a TDMA protocol, between a master device and at least one slave device, during which a plurality of frames are transmitted between the master device and the slave device, each frame being partitioned into a plurality of time intervals, at least one time interval having an analogue synchronization signal having an amplitude regulation portion in the form of a sine wave having a constant amplitude over a number of predetermined pulses, and an optimized synchronization portion in the form of a triangular amplitude modulation of the sine wave so as to determine a reference time.
Claims11
A method of communication according to a TDMA protocol between a master device and at least one slave device during which a plurality of frames are transmitted between the master device and the slave device, each frame being partitioned into a plurality of time slots, at least one time slot comprising an analog synchronization signal, transmitted by the master device to the slave device, comprising:
- transmitting a predetermined number of pulses between the master device and the at least one slave device, wherein the predetermined number of pulses comprising:
- (1) an amplitude setting portion which is in the form of a sine wave having a constant amplitude, and (2) an optimized synchronization portion which is in the form of a triangular-shaped amplitude modulation of the sine wave so as to determine a reference time instant.
A transmission module for transmitting data from a master device to at least one slave device in a frame according to a TDMA protocol, each frame being partitioned into a plurality of time slots, at least one time slot comprising an analog synchronization signal, the analog synchronization signal comprising an amplitude setting portion which is in the form of a sine wave having a constant amplitude during a predetermined number of pulses, and an optimized synchronization portion which is in the form of a triangular-shaped amplitude modulation of the sine wave so as to determine a reference time instant, the transmission module comprising a generator of a master signal, a generator of the analog synchronization signal and a master clock, connected to the two generators, which controls the generation rate of the master signal and the analog synchronization signal.
A reception module for receiving data, transmitted by a master device to at least one slave device, in a frame according to a TDMA protocol, each frame being partitioned into a plurality of time slots, at least one time slot comprising an analog synchronization signal, the analog synchronization signal comprising an amplitude setting portion which is in the form of a sine wave having a constant amplitude during a predetermined number of pulses and an optimized synchronization portion in the form of a triangular-shaped amplitude modulation of the sine wave so as to determine a reference time instant, the reception module comprising an extraction system for extracting the reference time instants and a setting system for setting a slave clock from said reference time instants.
Dependencies are inferred from the claim text.