Abstract: A secondary control circuit including contrast control, brightness control, and a peaking circuit means are all disposed on a printed circuit board and coupled into the video circuit of a television receiver by one pair of connectors.

Abstract: Brackets mounted on the frame of a shadow mask extend into the space between the wall of the frame and the wall of the face plate of a color cathode ray tube. In the event of transverse movement of the frame, such as from a physical shock, the bracket contacts the stud in the side wall and limits permissable movement of the frame, thus preventing damage to the fragile mask.

Abstract: Performance of fast warm up cathodes can be improved by providing a black heat radiating surface on the interior of the cathode cap. A particular material can be nichrome which is a nickel chromium alloy. The cathode cap material can be selected from any of the known cathode nickel alloys. A preferred method for accomplishing the result includes the steps of cladding a selected nickel alloy with the nichrome material and then forming the substantially cup shaped cap with the clad material on the interior thereof. The formed cathode cap is then fired for about 10 minutes or longer in wet dissociated ammonia at a temperature of about 900.degree. to 1300.degree.C to oxidize the available chromium on the surface of the nichrome. This produces an even dark surface thereon which has much higher heat radiating capabilities than the silver looking nickel cathode alloy.

Abstract: An improved process is provided for forming at least one set of elements of a patterned CRT screen disposed in overlay relationship upon an opaquely defined windowed-webbing priorly applied to the interior surface of the tube viewing panel in accordance with an apertured mask. The invention concerns the placement of a reflective medium over the exterior surface of the panel during screen exposure. By this means the exposure radiation traversing the screen and panel is reflected back through the respective windows in the screen structure to augment the polymerization and adherence of the pattern elements.

Abstract: A signal receiver responsive to a composite signal with video and pulse signal information includes circuitry for developing pulse signals having a width greater than the pulse signals in the composite signal and for effecting an advance in one of the developed signals with respect to one of the pulse signals of the composite signal whereby the pulse signals are removed from the composite signal to permit employment of the video information for determining the black level of a display.

Abstract: An automatic video signal control circuit for a television receiver includes apparatus for generating horizontal and vertical pulse signals to effect cancellation of the horizontal and vertical blanking pulse signals in a received television signal and for providing a video signal having a black level derived from the peak black level in the video portion of the received signal and a white level derived from the combined average and peak white level in the video portion of the received signal.

Abstract: An improvement is provided in a color cathode ray tube mask-panel assembly to assure positive electrical contact between the apertured mask member and the sidewall portion of the viewing panel. Resilient electrical contactor means positioned in the spacing between the mask member and the panel, is maintained in a flexed attitude with the attachment portion thereof affixed to the frame and an integral flexural contact portion so oriented to effect constant pressured contact with the conductively coated sidewall of the panel.