LOW POWER INTERMITTENT MESSAGING FOR HEARING ASSISTANCE DEVICES
First Claim
1. A method for communications between a transmitter having a first clock and a receiver having a second clock, the method comprising:
- synchronizing the first clock and the second clock at a synchronization time;
determining a time interval between the synchronization time and a transmission time of a transmission;
calculating a drift window using a potential drift amount between the first clock and the second clock over the time interval; and
transmitting the transmission with the transmitter, the transmission including a repetition of packets having a duration based on the drift window.
2 Assignments
0 Petitions
Accused Products
Abstract
The present subject matter includes a system for communications between a transmitter and a receiver. In various embodiments, the system uses a sleep interval to allow the receiver to go to sleep between wake up times to “sniff” for transmissions from the transmitter. The system adjusts the length of the preamble of the transmitted signal or a repetition of packets to allow the receiver to detect a transmitted signal based on drift in the clocks of the system. In various embodiments, a receive channel is changed if a signal is not received at a prior channel selection. In various embodiments, the transmission is determined by detection of an event. In various embodiments, the event is an ear-to-ear event. In various embodiments, the receiver and transmitter are in opposite hearing aids adapted to be worn by one wearer.
-
Citations
20 Claims
-
1. A method for communications between a transmitter having a first clock and a receiver having a second clock, the method comprising:
-
synchronizing the first clock and the second clock at a synchronization time; determining a time interval between the synchronization time and a transmission time of a transmission; calculating a drift window using a potential drift amount between the first clock and the second clock over the time interval; and transmitting the transmission with the transmitter, the transmission including a repetition of packets having a duration based on the drift window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A system, comprising:
-
a receiver including a first clock having a first frequency drift, the receiver adapted to receive on sleep intervals using the first clock as a timer; and a transmitter including a second clock, having a second frequency drift, the transmitter adapted to transmit at a time which is a multiple of the sleep interval using the second clock as a timer, wherein the transmitter is adapted to transmit a repetition of packets having a a length that increases with a time between transmissions based on one or more of the first and second frequency drifts, the length selected to ensure detection of the packets by the receiver regardless of drift of the first and second clocks. - View Dependent Claims (19, 20)
-
Specification