Eric F Hockings

47315636, Mar 15, 1988

Sep 29, 1986

6/912632

Stanley Bloom - Princeton NJ
Eric F. Hockings - Princeton NJ

RCA Corporation - Princeton NJ

H01J 2958
H01J 2950
H01J 2946

315382

A color display system includes a cathode-ray tube and self-converging yoke that produces an astigmatic magnetic deflection field within the tube. The tube has an electron gun for generating and directing three electron beams along paths toward a screen. The gun includes beam-forming region electrodes, main focusing lens electrodes, and two electrodes for forming a multipole lens between the beam-forming region and the main focusing lens in each of the electron beam paths. Each multipole lens is oriented to provide a correction to an associated electron beam to at least partially compensate for the effect of the astigmatic magnetic deflection field on that beam. A first multipole lens electrode is located between the beam-forming region electrodes and the main focusing lens electrodes. A second multipole electrode is connected to a main focusing lens electrode and located between the first multipole lens electrode and the main focusing lens, adjacent to the first multipole lens electrode. Means are included for applying a fixed focus voltage to the second multipole lens electrode and a dynamic voltage signal, related to the deflection of the electron beams to the first multipole lens electrode.

46212140, Nov 4, 1986

Apr 19, 1984

6/602155

Stanley Bloom - Bridgewater NJ
Eric F. Hockings - Princeton NJ

RCA Corporation - Princeton NJ

H01J 2980

313402

A cathode-ray tube includes a display screen having an array of phosphor stripes of three different emission colors arranged in cyclic order in adjacent triads. The tube further includes an electron gun for producing three convergent inline electron beams directed toward the display screen. A color selection structure is positioned between the display screen and the electron gun. The color selection structure includes a metal masking plate having therein an array of apertures arranged in columns that are substantially parallel to the phosphor stripes. The color selection structure further includes beam-influencing strips of insulation disposed on the masking plate which, in combination with the masking plate, define an array of windows for transmitting therethrough portions of the electron beams. A high voltage contact is provided for applying a potential to the metal masking plate and to the display screen. The strips of insulation are parallel to the phosphor stripes of the display screen.

44708220, Sep 11, 1984

Feb 25, 1983

6/469735

Stanley Bloom - Bridgewater NJ
Eric F. Hockings - Princeton NJ

RCA Corporation - New York NY

H01J 944

445 5

The novel method of fabricating a color-selection electrode for a cathode-ray tube comprises a combination of step including providing substantially orthogonal sets of support members which cross at a multiplicity of locations to form an apertured array. At least one of the sets of support members are insulators. The method includes coating the array with a continuously conductive metal film except at the multiplicity of crossings and providing electrical terminals for each of the sets of coated members. A structure utilizing the novel method is also described.

46971203, Sep 29, 1987

Jun 26, 1986

6/878788

Roger C. Alig - Princeton Junction NJ
Stanley Bloom - Bridgewater NJ
Eric F. Hockings - Princeton NJ

RCA Corporation - Princeton NJ

H01J 2951
H01J 2962

313412

A color display system includes a cathode-ray tube and yoke. The yoke is a non-converging type. The cathode-ray tube has en electron gun assembly for generating and directing three electron beams, located at the corners of an equilateral triangle, along paths toward a screen of the tube. The electron gun assembly comprises three electron guns each including electrodes that comprise a beam-forming region and electrodes that form a main focusing lens in the path of each electron beam. The main focusing lens is formed by at least two focusing electrodes. The focusing electrode closest to the beam-forming region includes a separated part adjacent to the paths of each of the electron beams. Each separated part forms a portion of the dipole lens structure in the path of an electron beam. Means are provided for applying dynamic signals to the separated parts which are related to the deflection of the electron beams.

43161260, Feb 16, 1982

Nov 23, 1979

6/096974

Eric F. Hockings - Princeton NJ
Carmen A. Catanese - Rocky Hill NJ

RCA Corporation - New York NY

H01J 2980

315375

CPT comprises a deflection-and-focus color-selection masking structure, a screen of parallel phosphor stripes, and means for producing three convergent in-line electron beams directed towards the target. When the CPT is operated, pairs of beamlets transmitted through windows in adjacent apertures in the masking structure are deflected towards one another to excite the same phosphor stripe and, also, are focused (compressed) in the narrow width direction of the phosphor stripes and defocused (stretched) in the length direction of the phosphor stripes.

47728264, Sep 20, 1988

Jun 26, 1986

6/879194

Stanley Bloom - Bridgewater Township, Somerset County NJ
Eric F. Hockings - Princeton NJ

RCA Licensing Corporation - Princeton NJ

H01J 2958

315382

A color display system includes a cathode-ray tube and yoke. The yoke is a non-converging type. The cathode-ray tube has an electron gun for generating and directing three electron beams, a center beam and two outer beams, along paths toward a screen of the tube. The electron gun includes electrodes that comprise a beam-forming region and electrodes that form a main focusing lens. The main focusing lens is formed by at least two focusing electrodes. The focusing electrode closest to the beam-forming region includes at least two spaced parts. Each spaced part forms a portion of a dipole lens structure in the path of an outer electron beam. Means are provided for applying to at least one of the spaced parts a dynamic signal which is related to the deflection of the electron beams.

48870099, Dec 12, 1989

Feb 12, 1986

6/828523

Stanley Bloom - Bridgewater Township, Somerset County NJ
Eric F. Hockings - Princeton NJ

RCA Licensing Corporation - Princeton NJ

G09G 104

315368

A color display system includes a cathode-ray tube and yoke. The yoke is a self-converging type that produces an astigmatic magnetic deflection field within the tube. The cathode-ray tube has an electron gun for generating and directing three electron beams along paths toward a screen of the tube. The electron gun includes electrodes that comprise a beam-forming region and electrodes that form a main focusing lens, and features electrodes for forming a multipole lens between the beam-forming region and the main focusing lens in each of the electron beam paths. Each multipole lens is oriented to provide a correction to an associated electron beam to at least partially compensate for the effect of the astigmatic magnetic field on the associated beam. There are two multipole lens electrodes. A first multipole lens electrode is connected to a main focusing lens electrode, and a second multipole lens electrode is located between the first multipole lens electrode and the beam-forming region and facing the first multipole lens electrode.