Robert A Rodgers

US Patent:

42688663, May 19, 1981

Filed:

Nov 9, 1979

Appl. No.:

6/093013

Inventors:

Robert L. Rodgers - Lancaster PA

Assignee:

RCA Corporation - New York NY

International Classification:

H04N 514

US Classification:

358228

Abstract:

A commercial automatic-iris lens assembly responds to the average value of the video signals applied to its control input. For use in industrial and surveillance camera applications, the video signals applied to the control input of the automatic iris from an image sensor are passed through a controllable-gain amplifier. The gain of the amplifier is controlled in response to the peak value of the video signals produced by the image sensor to provide an effective peak responding iris.

US Patent:

43617840, Nov 30, 1982

Filed:

Nov 23, 1979

Appl. No.:

6/096824

Inventors:

Robert L. Rodgers - Lancaster PA

Assignee:

RCA Corporation - New York NY

International Classification:

H01J 2958

US Classification:

315382

Abstract:

A focussing system for a camera tube in which the nominal magnitude of the focus tube voltage and focus coil current are predetermined and in which incremental changes in the focus voltage result in square-root proportional incremental changes in the focus current. Alternatively, incremental changes in focus current result in changes in the focus voltage which are proportional to the square of the current changes by which they are caused.

US Patent:

42777291, Jul 7, 1981

Filed:

Nov 19, 1979

Appl. No.:

6/094287

Inventors:

Robert L. Rodgers - Lancaster PA

Assignee:

RCA Corporation - New York NY

International Classification:

H01J 2954

US Classification:

315398

Abstract:

A simplified bootstrap deflection circuit includes a sawtooth capacitor with one end grounded. First and second serially connected resistors provide charging current to form a ramp voltage across the capacitor. The noninverting input of an amplifier is coupled to receive the ramp. The amplifier output is coupled to a deflection winding and current sensing resistor. A feedback path couples the current sensing resistor to the inverting input terminal. A resistor is coupled to the inverting input terminal and to a reference potential. A bootstrap capacitor couples sawtooth feedback voltage at the inverting input terminal to the junction of the first and second capacitors for producing a constant voltage across the second resistor for linearizing the ramp. The feedback path includes a series variable resistor which acts as a centering control.

US Patent:

42926050, Sep 29, 1981

Filed:

Nov 15, 1979

Appl. No.:

6/094752

Inventors:

Robert L. Rodgers - Lancaster PA

Assignee:

RCA Corporation - New York NY

International Classification:

H03K 328

US Classification:

331111

Abstract:

In this relaxation oscillator first and second electrically controlled constant current generators are used to provide proportionately related first and second currents to first and second terminals, respectively, between which the timing capacitor is connected. Set-reset, or R-S, flip-flop means is set and reset by the voltage at the first and second terminals, respectively, departing in a first sense from the voltage at a reference voltage bus by a predetermined amount. First switching means responds to the R-S flip-flop reset condition to complete a connection of the first terminal to the reference voltage bus and responds to the R-S flip-flop set condition to interrupt that connection. Second switching means responds to the R-S flip-flop set condition to complete a connection of the second terminal to the reference voltage bus and responds to the R-S flip-flop reset condition to interrupt that connection. The rate at which oscillations proceed is linearly related to the amplitudes of the proportionately related currents supplied by the first and second constant current generators.

US Patent:

42531160, Feb 24, 1981

Filed:

Nov 27, 1979

Appl. No.:

6/098179

Inventors:

Robert L. Rodgers - Lancaster PA

Assignee:

RCA Corporation - New York NY

International Classification:

H04N 504

US Classification:

358149

Abstract:

A synchronizing signal for a television camera includes a count-down system by which standard horizontal and vertical synchronizing signals are generated and added to the video signals being produced. In order to allow the camera to be synchronized to a nonstandard source of synchronizing signals such as a television game, computer with TV display, another television camera or a video recorder for allowing split-screen applications, the count-down system is phase-locked to the external sync portions of the external sync signals. Thus, standard sync signals are produced by the camera at a rate controlled by a nonstandard sync source. In order to prevent slewing of the system during the vertical equalizing or synchronizing portions of the external sync signals, the phase-lock loop which controls the frequency of the count-down system is inhibited during at least the vertical synchronizing and equalizing pulse portions of the external synchronizing signals.

US Patent:

45477990, Oct 15, 1985

Filed:

May 31, 1983

Appl. No.:

6/532335

Inventors:

Robert L. Rodgers - Lancaster PA

Assignee:

RCA Corporation - Princeton NJ

International Classification:

H04N 920

US Classification:

358 74

Abstract:

A kinescope driver stage includes an input amplifier transistor arranged in a cascode amplifier configuration with an output amplifier transistor. The low impedance emitter electrode of the input transistor is coupled to a reference potential via an impedance network. Degenerative feedback is provided from the impedance network to input circuits of the input amplifier.