Dmitry Starodubov - Dudley MA, US Yuri Grapov - Sutton MA, US Ning Liu - Charlton MA, US
International Classification:
G02F 1/35
US Classification:
359326, 372 22, 359328
Abstract:
A method and system for converting one frequency into another include a MOPA configuration radiating a light at a first frequency which is coupled into a frequency conversion unit. Further included are a control unit operative to monitor the other frequency and a pump unit operative to vary its output power provided that the monitored frequency does not substantially match a reference value stored in the control unit. The output power of the pump unit varies while the master oscillator scans its cavity in search for the desired resonant frequency.
Method And Apparatus For Driving Electro-Optic Displays
An electro-optic display module () comprises an electro-optic medium, electrodes, and a controller () having outputs each connected to one electrode. A voltage supply () under the control of the controller and connected to a power input of the controller, supplies to a power input of the controller either an operating voltage, or a non-operating voltage lower than the operating voltage. The display module has a display operating mode, in which the voltage supply supplies the operating voltage to the controller and the controller applies the operating voltage to at least one electrode, and a display non-operating mode, in which the voltage supply supplies the non-operating voltage to the controller and the controller does not apply this non-operating voltage to any of the electrodes.
News
Teens whose mothers had an abortion are more likely to undergo abortion
association between mothers and daughters in the timing of a first pregnancy ending in a live birth," say Dr. Joel Ray and Ms. Ning Liu, the Institute for Clinical Evaluative Sciences, Toronto, Ontario. "We wanted to see whether the same tendency exists for pregnancies ending in an induced abortion."We don't know what factors cause this association, as it was beyond the scope of our study," says Ning Liu. "Previous studies have found a higher likelihood of teen abortion if a young woman has greater social challenges, including poor school performance, separation from a biological parent, lower