Abstract: Plural signal delays in a progressive scan system are provided by a field memory having double multiplexing within a video line to provide compacted data samples including interleaved pixels in a first time interval representing field and frame delayed pixel samples and compressed motion data in a second time interval representing frame motion delayed by a field interval. Advantageously, the double multiplexing avoids the need for multiple field delays which otherwise would be required for providing field delayed video, frame delayed video and field delayed motion signals in motion adaptive systems designed for accurate reproduction of small fast moving objects in a displayed image.

Abstract: The invention provides a thermal design of a catheter where the active electrode is partially covered by a heat conducting and electrically insulating heat-sink layer for localizing and controlling an electrical heating of tissue and cooling of the active electrode by convective blood flow. The invention further comprises a current equalizing coating for gradual transition of electrical properties at a boundary of a metallic active electrode and an insulating catheter tube. The current equalizing coating controls current density and the distribution of tissue heating.

Abstract: A method of making a compact high-voltage, high-power, thick-film screen-printed cylindrical resistor. A V-serpentine pattern is formed and adapted to fit on a cylindrical substrate having a diameter range of about 1/10 inch to about 1/2 inch. Such pattern is caused to have adjacent sections at a small acute angle to each other. Furthermore, the pattern is caused to have gaps at the open ends of the loops that are substantially wider than the gaps at the closed ends of the loops. In addition, the pattern is caused to have a sufficient number of undulations, and sufficient gap size, to achieve a predetermined voltage rating. Thereafter, the height of the pattern is changed to achieve a voltage coefficient substantially corresponding to the desired voltage coefficient. Furthermore, the resistive film material is altered to cause it to have a different resistivity, said latter resistivity being such that the same resistance value is achieved.

Abstract: An electronic switch is disclosed using a piezoelectric push button transducer and an electronic switching circuit. The push button piezoelectric transducer is connected with the switching circuit with a polarity to provide a switching voltage in response to actuation of the push button switch by finger pressure. The connection is such that the polarity of the voltage generated as a result of differential thermal expansion of the piezoelectric transducer is opposite that produced by finger pressure on the push button switch and does not produce false switching from fast temperature rise. In order to protect against false switching due to high temperature soak of the electronic switch, a thermistor is provided in the electronic switching circuit.

Abstract: A socket for securing an integrated circuit (IC) during burn-in or test procedures. The socket includes a base which carries a plurality of electrically conductive contacts. Opposed hold down latches are shiftably connected to the base and include outer cams. The socket also includes a movable top which has an integral nib for contacting the latch cams to effect shifting of the latches. A rotatable lever housed in the base is connected to an actuating arm which is shiftable by movement of the top. The lever is operably associated with the contacts and shifts the contacts between an operative position in contact with the IC leads and a standby position spaced from the leads.

Abstract: In a vertical sync separator, a composite sync signal in which picture information is removed is coupled via a low-pass filter to an input terminal of a comparator having a predetermined threshold level. The comparator produces an output signal when a voltage at the input terminal is more positive than the threshold level, that is indicative of the occurrence of a vertical sync pulse. When any of equalizing and horizontal sync pulses occurs, the comparator output signal is not produced. A negative current source is coupled to the low-pass filter to provide level shifting of the comparator input voltage so as to increase a guard band or noise immunity of the sync separator.

Abstract: A differential amplifier formed by a pair of transistor couples a vertical sawtooth signal to an input side of a vertical deflection amplifier. Nonlinearity of the transistor pair provides linearity or S-correction in the vertical direction.

Abstract: Apparatus for measuring the degrees of roll of the body of a longwall shearing machine and providing signals proportional to the roll angle which are used to control drum cutting positions for controlling roof and floor horizons of a coal tunnel.

Abstract: An electromagnetic proximity sensor for car security systems includes an electromagnetic wave radiating section adapted to oscillate in a predetermined high frequency range to outwardly radiate an electromagnetic wave; a clutter component extractor for extracting a low frequency clutter component generated in the electromagnetic wave by the approach or movement of an object; a level comparing section, to which is supplied a low frequency clutter component signal corresponding to the extracted low frequency clutter component so as to be compared with a predetermined reference level and which is adapted to emit a sensor signal when the clutter component signal supplied is beyond a predetermined level; and an oscillating operation intermitting section, to which is supplied a pulse signal of a variable duty ratio and of a frequency higher than that of the low frequency clutter component and which is adapted to intermit the oscillating operation of the electromagnetic wave radiating section on the basis of this pu

Abstract: The universal remote control system includes a universal remote control comprising an input including a set of keys or push buttons for inputting commands into the remote control, infrared signal output circuitry for supplying an infrared signal to a controlled device including IR lamp driver circuitry, a central processing unit (CPU) coupled to the input and to the signal output circuitry, a single, non-volatile read-write memory coupled to the CPU and data coupling circuitry including terminal structure comprising a receiving port coupled to the CPU for enabling code data for creating appropriate IR lamp driver instructions for causing the infrared signal output circuitry to emit infrared signals which will cause specific functions to occur in a specific controlled device, for operating a variety of devices to be controlled, to be supplied from outside the remote control through the receiving port of the terminal structure directly to the CPU for direct entry to the memory to enable the remote control to co

Abstract: A handle, for the female half of a quick-action coupling of the type including a body having a first end adapted to receive a hose and a second end adapted to receive the male half of the coupling, a grasping means coupled to the body for releasably grasping the male half of the coupling when inserted into the second end of the body, and a spring-biased slide member coupled to the body and co-acting with the grasping means for causing a locking engagement between the male and female halves. The handle comprises a housing having an interior opening in a first end thereof dimensioned so as to receive the female half of the coupling therein in a loose-fit sliding manner.

Abstract: An automatic blood pressure gauge uses two pulse width modulated solenoid valve to achieve a substantially linear deflation curve. The solenoid valves are controlled by a valve switching signal that has a fixed fundamental frequency. The gauge samples and digitizes the cuff pressure signal. To eliminate artifacts related to the valve switching signal, a microprocessor in the gauge filters the sampled data pressure signal using a third-order Chebychev 2 filter having a zero at the frequency of the valve switching signal. A single timing source used for controlling the microprocessor is also used for developing both the valve switching signal and the sampled data pressure signal, in order to achieve high attenuation of the valve switching signal components in the pressure signal via the Chebychev filter.

Abstract: According to the principles of this invention, a polysilicon layer in a semiconductor device is shaped so that in subsequent processing steps a uniform topology is achieved. In particular, a first layer, typically polysilicon, is overlain by a second layer, typically spin-on glass, which is in turn overlain by a mask layer. An opening is formed in the mask layer and the second layer. An isotropic etchant is applied to the structure after the opening is formed. The etchant is formulated to have a differential etch rate in the first and the second layers so that the first layer after etching has an edge surface with a taper of less than 60.degree. and preferably about 45.degree..

Abstract: A first phase locked loop generates a first timing signal at a first horizontal synchronizing frequency corresponding to a horizontal synchronizing component in a video signal. A converter circuit derives from the first timing signal a second timing signal, having a second frequency at a multiple of the first frequency and subject to a variation in frequency at a rate corresponding to the first frequency. A second phase locked loop comprises a comparator, a low pass filter, a controllable oscillator and a horizontal output deflection stage receives the second timing signal, which can be asymmetric within the period of the first timing signal, and a feedback signal in accordance with the second frequency. The controllable oscillator generates a horizontal synchronizing signal at the second frequency.

Abstract: A protection circuit for an audio output channel of a television receiver includes a detector which detects the presence of either or both of (1) a sustained DC component applied to the loudspeaker form the audio power amplifier, (2) and the loss of a supply voltage for the power amplifier. The presence of a of a sustained DC component can damage the loudspeaker. The loss of a supply voltage of the power amplifier can damage the power amplifier and can also result in the application of a sustained DC amplifier and can also result in the application of a sustained DC component to the loudspeaker. For example, the loss of the negative supply voltage of a power amplifier incorporated in an integrated circuit results in the removal of potential from the substrate which otherwise serves to electrically isolates various semiconductor devices supported by the substrate.

Abstract: A fractional divider using a counter means to provide fractionality. A divider is used to divide the VCO output signal by N or N+1 as selected. A divider control circuit controls the divider to divide by the appropriate divisor to obtain the selected output frequency. The fractional divider circuit counts divider control signals which represent a first division period. The fractional divider circuit establishes a second period of multiple first periods and at the terminal count of each second period, provides a selected number of fractional control signals to the divider control to cause division by a different number, such as N+1. The fractional divider comprises a first counter programmed to count first periods and issue its terminal count upon receiving the programmed count of first periods. The fractional divider also comprises a second counter to provide the selected number of fractional control signals upon receipt of the terminal count of the first counter.

Abstract: A flechette is disclosed comprising a rod-shaped steel body having a blunt generally conical penetrating point, a separate resinous plastic fin component securely mounted on the rear end portion of the body, and a generally conical gradually tapering resinous plastic nose piece securely mounted on the penetrating point for reducing air drag when the flechette is fired at high velocity. Interlocking annular flanges are formed on the penetrating point and the nose piece for securing the nose piece to the body. The fin component has an axial sleeve received around a rear pin portion of the body and securely retained thereon by annular flange and groove members on the sleeve and the rear pin portion. A modified flechette is disclosed having a separate, hardened steel penetrator component securely mounted on a reduced front pin member on the body by a press fit between the front pin member and a rearwardly opening bore in the penetrator component.