Abstract: This is a novel two-player board game which uses addition and subtraction to initiate the movement of a player's pieces. The game is comprised of two sections; each section consists of a plurality of spaces containing integers. The interior section is comprised of opposite sides separated by zeros, one side containing negative integers and the other positive. Pieces are provided to each player for separate use in the exterior and interior sections. Movement is initiated by positioning pieces in the exterior section on spaces whose integers produce a difference of two integers found in the interior section, thus enabling pieces to move from one space to another. The object of this game is to be the first player with all his/her pieces positioned within the interior section on spaces whose integers when added together equal zero.

Abstract: A process and a system produces isocyanate and converts anhydrous hydrogen chloride, which is a by-product of isocyanate production, to chlorine gas in an electrochemical cell. The chlorine is recycled to the isocyanate process. Any unreacted anhydrous hydrogen chloride may be recycled to the electrochemical cell. By recycling the anhydrous hydrogen chloride and the chlorine, the process and system are able to reduce the cost of producing isocyanate. In addition, this process and system process eliminate or at least substantially minimize the problems associated with disposal of anhydrous hydrogen chloride by turning it into a useful starting material in the isocyanate process.

Abstract: A process and a system uses a direct chlorination reactor for producing ethylene dichloride by direct chlorination, without the need for an oxychlorination unit. This ethylene dichloride may be used to make vinyl chloride monomer. In the process for making ethylene dichloride, ethylene and chlorine are both supplied to a direct chlorination reactor. The ethylene reacts with the chlorine to form ethylene dichloride. Chlorine is supplied to the direct chlorination reactor from an electrochemical cell which converts anhydrous hydrogen chloride to dry chlorine gas. This chlorine gas is purified and liquefied to form liquid dry chlorine, and the liquid dry chlorine is recycled to the direct chlorination reactor. The ethylene dichloride may be pyrolyzed to produce vinyl chloride monomer and anhydrous hydrogen chloride.

Abstract: In television apparatus for producing signals for displaying simultaneously a succession of time-separated images of an object moving over a selectable time period in an otherwise static scene, the effect of the display is improved, particularly in situations where there is partial overlap of successive images of the object, by causing the latest image of the moving object to take precedence over the next previous image.

Abstract: Television apparatus for producing signals for displaying simultaneously a succession of separated images of an object moving over a selectable time period in an otherwise substantially static scene so that the trajectory of the object can be viewed. The effect is achieved by storing, at the start of the selectable time period, a television frame in a suitable storage device and periodically comparing the stored frame with television frames arriving subsequently during the selectable time period, and upon detection of differences between corresponding picture elements of the stored and subsequently arriving frames, substituting the picture elements that caused the detected difference in the stored frame. The system identifies such substituted picture elements and ensures that the same picture elements are not again substituted during the selectable time period.

Abstract: In television apparatus for producing signals for displaying simultaneously a succession of separated images of an object moving over a selectable time period in an otherwise static scene, the viewability of the display is improved by enhancing the contrast, either continuously or intermittently, between the images of the moving object and the background. This is accomplished by altering the amplitude of signals representing the images of the moving objects relative to the amplitude of signals representing the background.

Abstract: An arrangement for the elimination of spurious chrominance component in the main luminance output signal from a chrominance-luminance separator of the comb filter type. The full band luminance signal from the comb filter is applied as one input to a switching circuit and the luminance component is also filtered by a low pass filter having a characteristic to roll off at the chrominance subcarrier frequency and applied as a second input to the switching circuit. The switching circuit is arranged to normally transmit the full band luminance component and to be switched to couple the filtered luminance signal only upon occurrence of spurious chrominance components in the luminance signal. The switching circuit is actuated by a control signal derived by comparing the top and bottom line signals in the comb filter and producing a gating signal for the switching circuit when there is a difference in the chrominance in the top and bottom lines.

Abstract: A system for reducing noise in a color video signal which utilizes frame store integration and includes a delay or storage device for storing a single television frame, a summing device for adding a fractional amplitude portion of the signal stored in the storage device to a fractional amplitude portion of the present video signal, and a chrominance corrector circuit for altering the chrominance component of the stored signal so as to be in the proper phase relationship to be summed with the chrominance component of the present video signal. The system is operative automatically to change the fractional amplitude portion of the stored signal fed back to the summing device as a function of the difference between stored and present signals thereby to change the integration time constant of the system to accommodate for motion between the present signal and the stored frames.

Abstract: System for transmitting and receiving two complete color television pictures from two separate sources in common synchronism wherein the odd-numbered fields of the picture from one of the sources are transmitted in alternation with even-numbered fields of the other of the sources and wherein reception and reconstruction of the two pictures is accomplished by alternately storing the successive odd- and even-numbered fields in a field store having a delay of one field plus or minus half a line and recombining the delayed fields with their respective undelayed fields to recreate the two separate pictures. By utilizing a delay of exactly one field plus or minus half a line (i.e.