On 03/03/2013 01:00 AM, Peter Gottlieb wrote:
Perhaps you can detect EMI from the device especially if you put it it a shielded metal box with pickup antenna. You might be able to get the clock right from that.
Well, considering that actively "driving" a LCD segment involves passing an AC field over it, in electrostatic drive, you could detect the existence of AC or not on a segment, but you would have to "mask out" that of other segments. On the other hand, you can expect a multiplexed drive. An E-field detector as such would be able to pick up the shifts. Wonders if the multiplexing is done by the same clock or a free-running clock. If it is the same clock, just picking up the E-field from the multiplex suffice to detect the clock ticking.
Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
