Douglas W Constable: Ambient light contrast and color control circuit. GTE Sylvania Incorporated, Norman J O Malley, Thomas H Buffton, Robert T Orner, May 16, 1978: US04090216 (165 worldwide citation)

Contrast and color levels in a color television receiver are automatically varied with ambient light variations by an RC circuit AC coupling an ambient light responsive device to a luminance signal channel and DC coupling the ambient light responsive device to a DC potential source and a chrominance ...

Samuel Chung Shu Kuo, William D Rosser: Broadband corrugated horn antenna with radome. GTE Sylvania Incorporated, John F Lawler, September 6, 1977: US04047180 (124 worldwide citation)

A broadband (8-18 GHz) radomed horn antenna system comprises a conical horn having broadband slots on the inner surface and a radome having a frusto-conical side wall and a spherically shaped transverse wall inserted into the horn. The radome wall is thin relative to operating wavelength. The radome ...

Anderson Warren A, Labadini William M, Passmore Edmund M: Extended life, double coil incandescent lamp. GTE Sylvania Incorporated, Theodosopoulos James, December 31, 1974: US3858086 (117 worldwide citation)

An electric incandescent lamp has a refractory metal wire coil in series with the lamp filament in order to limit inrush current to the filament. After a short period of lamp operation, a bimetallic switch shorts out the wire coil.

Richard W Anderson, Frederick F Bodenrader: Back-lighted display arrangement. GTE Sylvania Incorporated, Peter Xiarhos, Elmer J Nealon, Norman J O Malley, February 8, 1977: US04006546 (113 worldwide citation)

A back-lighted display arrangement including a soft, compressible opaque light baffle sandwiched between a lamp assembly and a display panel. The light baffle has a grid-like configuration defining a plurality of compartments each of which is arranged to receive a different one of a plurality of lam ...

Thompson Wallace T: Multiple carrier phase modulated signal generating apparatus. GTE Sylvania Incorporated, Keay David M, Nealon Elmer J, O Malley Norman J, April 23, 1974: US3806811 (94 worldwide citation)

Signal generator for use in testing FM communication receivers including a triggered free-running multivibrator which may be synchronized to operate at a frequency equal to the spacing between adjacent channels of the FM receiver and an audio oscillator. The outputs of the multivibrator and the audi ...

Kaelin Oscar J: Electro-optic transmission link. GTE Sylvania Incorporated, Keay David M, Nealon Elmer J, O Malley N, February 12, 1974: US3792284 (78 worldwide citation)

An electro-optic link for transmitting signals including a length of flexible fiber optic light guide, a light emitting diode (LED), and a photo-diode. One end of the light guide and the LED are mounted in fixed relationship in a first coupling having electrical connector pins for mating with a rece ...

Joseph J Cleveland: Method for producing ceramic cellular structure having high cell density. GTE Sylvania Incorporated, Norman J O Malley, John C Fox, Donald R Castle, April 12, 1977: US04017347 (65 worldwide citation)

A ceramic cellular structure having a cell density of up to 1600 cells per square inch and wall thicknesses down to 2 mils is produced by a process which comprises: (1) forming a slurry consisting essentially of finely divided sinterable solid particles of ceramic raw materials and a controlled amou ...

William C Knoll: High power factor conversion circuitry. GTE Sylvania Incorporated, Norman J O Malley, Thomas H Buffton, Robert T Orner, August 22, 1978: US04109307 (62 worldwide citation)

A high power factor conversion circuit suitable as a ballast circuit for lamps includes a full-wave rectifier coupled to an AC potential source and providing a pulsating DC potential. A high frequency inverter is coupled to a load circuit and to a feedback rectifier circuit supplying a rectified hig ...

Thomas J Lennon: Signal analyzer with noise estimation and signal to noise readout. GTE Sylvania Incorporated, David M Keay, February 14, 1978: US04074201 (59 worldwide citation)

Signal monitoring apparatus in which a baseband signal including noise is compared at timed intervals with a reference signal and an estimated noise signal from an estimated noise signal generator. Indications of whether the estimated noise signal is higher or lower than the noise level present in t ...

Ivan Leo Ericson, James Elroy Morean: Apparatus for maintaining vertically moving strip at established tension. GTE Sylvania Incorporated, Norman J O Malley, Lawrence R Fraley, Donald R Castle, March 1, 1977: US04009815 (52 worldwide citation)

An apparatus for maintaining a vertically-oriented moving strip of thin and flexible metallic material at an established degree of tension in order to prevent deformation of the strip. The apparatus includes first and second series of vertically oriented rollers which extend above the apparatus's mo ...