Juris A Asars

46138110, Sep 23, 1986

Sep 4, 1984

6/647203

Eugene G. Vaerewyck - Albuquerque NM
Cheng-Lin Chen - Pittsburgh PA
Juris A. Asars - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G01R 1507
G02F 109

324 96

A magneto-optical current sensor for measuring current flowing through a conductor, characterized by at least two components. One component is parallel to the direction of current flow and is proximate to a source of magnetic field. The other component is perpendicular to that direction and includes a surface in contact with said one component. One of the components having a reflective surface for reflecting a polarized light beam between components whereby a light signal is produced that is compensated for temperature, loop degradation, and linearity.

40877922, May 2, 1978

Mar 3, 1977

5/773874

Juris A. Asars - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G08B 536
H05B 3308

340166EL

An electro-optic display system is detailed in which an electro-optic display panel is driven by varying the on-time duty cycle during which the display medium is excited to generate the grey-scale brightness for an individual display element.

52276961, Jul 13, 1993

Apr 28, 1992

7/874862

Juris A. Asars - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G09G 310
G09G 330

3151693

An improved power saving drive circuit is provided for a multiplexed thin film electroluminescent (TFEL) array having a number of edge emitter devices. The drive circuit includes a charge circuit and a discharge circuit operatively connected to a load capacitance. Although the charge and discharge circuits may contain common elements, the discharge circuit usually has fewer windings than the charge circuit. A voltage regulator is provided to maintain the voltage on the load capacitor during the interval between charging and discharging thereof.

41140702, Sep 12, 1978

Mar 22, 1977

5/780138

Juris A. Asars - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

H05B 3700
H05B 3900
H05B 4100

315169TV

An electro-optic display panel is described in which thin film electronic circuitry is associated with individual display medium elements disposed upon a substrate. Rows and columns of interconnecting bus bars are minimized by utilizing the bus bars on a time shared basis.

41106644, Aug 29, 1978

Apr 15, 1977

5/787801

Juris A. Asars - Murrysville PA
David H. Davies - Wilkins Township, Allegheny County PA
Thomas P. Brody - Pittsburgh PA

Westinghouse Electric Corp. - Pittsburgh PA

H05B 3700
H05B 3900
H05B 4100

315169TV

An electroluminescent bargraph display module is detailed with an integral multi-stage thin-film transistor dynamic shift register disposed upon the module substrate side-by-side with the individually controllable electroluminescent display elements. The shift register accepts serial digital data input and holds it stationary in the register and supplies parallel outputs from the respective stages which are connected to individual display elements.

56127286, Mar 18, 1997

May 20, 1994

8/247635

Zoltan K. Kun - Churchill PA
David Leksell - Oakmont PA
Gerald J. Faychak - McKeesport PA
Juris A. Asars - Murrysville PA

Westinghouse Electric Corporation - Pittsburgh PA

B42J 247
B42J 2435

347232

A color printing system including thin film electroluminescent (TFEL) edge emitter devices and an electronic interface for driving the TFEL devices. The TFEL edge emitter devices form a multi-color TFEL edge emitter structure operable for emitting a plurality of different colors of light onto a media. The electronic interface receives gray scale data for pixels and converts it into a serial data stream used to drive pixels in the TFEL edge emitter structure. The electronic interface further includes a compensation memory for compensating for pixel variations in the TFEL structure. The compensation memory can be periodically recalibrated "in place" during the life of the printing apparatus.

48990442, Feb 6, 1990

Apr 29, 1988

7/188245

J. Richard Hansen - Wilkins, Twp., Allegheny County PA
Juris A. Asars - Murrysville PA
Robert M. Oates - Murrysville PA

Westinghouse Electric Corp. - Pittsburgh PA

G01D 534

250227

An optically coupled remote sensor apparatus comprises a tuned circuit incorporating a sensor and a light emitting diode (LED) connected in parallel with the tuned circuit. The natural resonant frequency of the tuned circuit is determined by the sensor whose electrical parameter is a function of the condition to be sensed. The sensed condition correlates to a frequency of light pulses emitted from the LED, which light pulses are only emitted when the pulsed light source frequency coincides with the natural resonant frequency of the tuned circit.

46125000, Sep 16, 1986

Sep 4, 1984

6/647201

Cheng-lin Chen - Penn Hills PA
Juris A. Asars - Murrysville PA
Eugene G. Vaerewyck - Albuquerque NM

Westinghouse Electric Corp. - Pittsburgh PA

G01R 1507
G02F 109

324 96

Apparatus for measuring current in a conductor characterized by a magneto-optical current sensor employing the Faraday effect to measure current in a high voltage transmission line. Polarized light having a predetermined plane of polarization is directed into the sensor which plane of polarization is rotated by magnetic field lines generated by the current in the conductor. A bimetal coil rotates the sensor to achieve temperature stability of the current signal in the temperature range of -40. degree. C. to 140. degree. C.