1
Chieh Chang, Man S Lee: Switched capacitor n-path filter. GTE Automatic Electric Incorporated, Russell A Cannon, May 1, 1984: US04446438 (117 worldwide citation)

A switched capacitor N-path filter in which all capacitors that introduce delay in the paths, in that they have memory and are characterized such that the new charge flow into each such capacitor during each commutation cycle depends on the old charge on it from the previous commutation cycle, are r ...


2
Robert A Sherwood: Multichannel subscription television system. GTE Automatic Electric Laboratories, Russell A Cannon, May 18, 1982: US04330794 (98 worldwide citation)

Sinusoidal timing reference signals, each of which is associated with a different suppresed-sync scrambled-priority television channel signal, frequency modulate associated carrier frequency signals for producing modulated carrier signals that are combined with a continuous wave (CW) sinusoidal carr ...


3
Chieh Chang, Man S Lee: Switched capacitor DSB modulator/demodulator. GTE Communication Systems Corporation, Russell A Cannon, April 9, 1985: US04510467 (87 worldwide citation)

An integrated single-sideband modulator comprises six integrated capacitors C1-C6 and first switch means alternately connecting C1 and C2 as feedback capacitors across a differential input operational amplifier A1. The amplifier has a virtual ground potential on its inverting input terminal for caus ...


4
James A Coppin: Method of manufacturing printed wiring boards. AEL Microtel, Russell A Cannon, December 11, 1984: US04487654 (43 worldwide citation)

An improved method of manufacturing a printed wiring board having the characteristics of one with a solder mask over bare copper for circuit traces and ground planes. The method includes the step of electroplating a very thin coating of tin-lead over the circuit traces, ground planes, holes and circ ...


5
Ake Sewerinson, Andrew V Hellquist: Constant envelope offset QPSK modulator. British Columbia Telephone Company, Russell A Cannon, September 23, 1986: US04613976 (37 worldwide citation)

The modulator comprises a serial to parallel converter which separates alternate bits of a serial-binary data stream into I and Q bit streams that are stored in associated shift registers, a pair of ROMs that drive associated D/A converters, and a quadrature-phase modulator. Each bit of the I and Q ...


6
Alvin L Pachynski Jr: Digital bit rate converter. GTE Automatic Electric Laboratories Incorporated, Leonard R Cool, Russell A Cannon, May 24, 1977: US04025720 (30 worldwide citation)

In a digital communication system, apparatus for upconverting the bit rate, f.sub.1, of a digital data source to permit digital transmission at a bit rate f.sub.2, where f.sub.2 > f.sub.1. Pulse stuffing techniques are used to insert a fixed number of time slots in the digital data signal such that ...


7
Angus M Crocker: Printed circuit fuse. GTE Network Systems Corporation, Russell A Cannon, October 16, 1984: US04477857 (30 worldwide citation)

Apparatus for preventing a fire in electrical equipment when a relatively constant overvoltage condition appears on an input line comprises a meltable fuse in the line and a surge arrestor connected between the equipment side of the fuse and ground. The surge arrestor is physically located adjacent ...


8
Robert A Sherwood, Svein T Nordberg: Electrostatic discharge-protected switch. GTE Products Corporation, Russell A Cannon, December 1, 1981: US04303960 (30 worldwide citation)

A tactile matrix switch has a planar electrically conductive layer dielectrically spaced between contacts of individual switch elements and an actuating mechanism such as a finger on the body of a human being who may carry an electrostatic charge. Some switch contacts are electrically connected thro ...


9
Harold D Franco: Chassis formed of sheet stock. GTE Automatic Electric Laboratories Incorporated, Leonard R Cool, Russell A Cannon, September 26, 1978: US04116510 (27 worldwide citation)

This chassis has side, top, bottom and rear plates which are made out of sheet stock and where are oriented at 90.degree. with respect to each other. Bifurcated tongues are formed in edges of plates. Elongated slots are also formed in plates at points spaced away from the edges thereof. The slots an ...


10
Robert G Rogers: Current sensing circuit for power supply with series control transistor. GTE Automatic Electric Laboratories, Russell A Cannon, July 14, 1981: US04278930 (27 worldwide citation)

A -DC to +DC voltage converter having one input and one output terminal connected to ground and regulator circuitry responsive to a control voltage for regulating the magnitude of output current delivered to a load impedance connected across the output terminals. Apparatus producing the control volt ...