Abstract: A video switching method for switching between two video signal sources for display on a monitor is employed by intensity modulating a video signal on a television raster lines and frames. Digital values representing pixel positions on the field when a switch is to occur from one source to another are stored. The representations of the pixels during the generation of the raster are counted and compared with the stored representations to effect switching when a equality between the two representatives occurs.

Abstract: A telephone system is shown including subscriber loop interface circuits each for connecting a subscriber loop having a filter and a rectifier to a switching network of the system. The interface circuit includes a transformer having a primary winding, a secondary winding, and a sense winding. The primary winding is connected in series with a switching transistor whereby current pulses are fed into the primary winding. The secondary winding is connected to the filter and rectifier of the loop so that the current pulses are rectified to a DC current for the loop. An integrator including a current mirror feeding an integrating capacitor integrates each of the current pulses to give an integrated voltage. At the same time the voltage across the secondary winding is fed via a sense winding to a sample and hold circuit to generate a voltage which is compared against the voltage developed across the integrator.

Abstract: A metal can top rests on a tool seat for the purpose of riveting a pull-up ring to the metal can top. Riveting takes place with the aid of a dolly which moves back and forth relative to the tool seat. Transmitters are arranged in the tool seat to check that no foreign objects are present in it. Transmitters sense the movement of the dolly past a reference level as it moves towards the tool seat. In the riveting position the dolly presses the metal can top and associated pull-up ring against the tool seat, whereby the pull-up ring actuates a sensing pin and moves it to an indicating position which is sensed by a transmitter. The signals from the respective transmitters are received by a delay and control device.

Abstract: A high voltage converter converts an incoming high frequency pulse voltage to a direct voltage at a level which can be varied by varying the pulse width. The converter contains a transformer (T) with its primary side (p) connected to a pulse source (U) and to a controllable switch (K). The secondary side of the transformer is divided into two sections (s.sub.1, s.sub.2). One section (s.sub.1) is connected to a rectifier in the form of a conventional voltage doubler circuit (D1, D2, Cd1, Cd2) with capacitors in parallel with the secondary winding sections (s.sub.1, s.sub.2). The other section (s.sub.2) is connected to a rectifier bridge (D3-D6) and a smoothing filer (L.sub.f, C.sub.f). The converter output is the doubler circuit output in series with the smoothing filter output.

Abstract: An instructional training manikin comprising a body including a torso, legs, arms and a head. Interchangeable male and female breasts are detachably connectible to the body. Male and female genitalia are also respectively connected to the body whereby the body can be converted between male and female model. The torso is hollow and includes fluid reservoirs therein connected to openings in the body to permit flow of fluid to and from the reservoirs for simulating various body functions and treatments. A soft flexible cover is detachably connected on the body at least to cover the female breasts and provide simulated appearance and touch of normal and diseased female breasts. A flexible buttocks simulating cover is detachably connectible to the body at the lower posterior wall thereof. The buttocks simulating cover has an aperture which registers with an anal opening in the body. The interior of the body is provided with a wall on which plates carrying normal and diseased prostate models can be attached.

Abstract: A video recorder has a first transducer which moves with respect to a moving tape to selectively record and play back video information; the tape has a control region which is accessed for recording or playback by a second transducer. Storing means external of the tape store first coded indicia. Generating means responsive to the storing means is connected to the second transducer for generating second coded indicia to be recorded in the control region simultaneously with the recording of video information by the first transducer, provided the second coded indicia has a predetermined relationship with the stored first coded indicia. During playback signals recorded on the control region are utilized for synchronizing the relative movement between the first transducer and the second transducer and the tape.

Abstract: A motion sensitive firable device includes an opthomological laser for firing at an eye, switching means for activating the laser and motion detector means interconnecting the switching means and the laser for preventing the switching means from activting the laser when the motion detector means detects a given motion of the eye.

Abstract: For a stepping motor having a rotatable stator magnetic field for driving the rotor, there is disclosed a method of damping the oscillations of the rotor which occurs when the rotatable stator magnetic field is stopped upon arriving at a desired rotational position by measuring quantities related to the instantaneous velocity of the rotor due to the oscillations of the rotor about the desired rotational position, rotationally displacing the stator magnetic field from the desired rotational position in a direction opposite to the direction of the oscillation, and thereafter returning the stator magnetic field to the desired stopping position.

Abstract: A mixer comprising a conical mixing vat, tapering downward toward a material egress, and a motor-driven mixing worm which rotates on its axis and revolves within the mixing vat, the mixing worm having an upper region with a small screw pitch and, a lower region with a large pitch and a neutral conveyance zone between the upper and lower regions. In order to achieve a stable pattern of the junction formed by the neutral conveyance zone of the mixing worm between the upper and lower regions, which will be independent of the degree to which the mixer is filled, a mixing worm rotates around another mixing worm which is placed centrally in the upper region of the mixing vat along its longitudinal axis, this worm being of cylindrical shape along its length and extending into the conveyance neutral zone and with its exterior diameter nearly touching the other mixing worm.

Abstract: A device for measuring the frequency of a pulsed carrier signal in which the carrier frequency is situated within the frequency range and to give a continuous signal whose frequency is equal to the measured carrier frequency. A frequency discriminator (3) gives an analog voltage via a track-and-hold circuit (4) and a DC-amplifier (15) to one input of a comparator (6) whose second input receives the analog voltage from the discriminator (3). The difference value from the comparator (6) is supplied to a voltage controlled oscillator (8). This is via a directional coupler or duplexer (9) and a controllable switch (1) connected to the frequency discriminator (3) which alternatively receives the input signal to the device and the output signal from the voltage controlled oscillator (8).

Abstract: A container comprising a body (1) with a lid (2) initially sealingly engaged on the body. The lid is removable from the body to open the container and is replaceable to close the container. The body has a mouth with a strip (10) of annular extent secured to the lid, the body being provided with an annular weakening zone (6) or notch (7) in the vicinity of the strip where the mouth of the container is secured to the lid. The container is separable at the weakening zone to separate a part of the mouth and the lid together with the strip from the body, the weakening zone being positioned radially inwards of the strip and upon rupture of the weakening zone forming a locating surface for replacement of the lid on the body. Upon reclosure of the lid on the body, the locating surface engages a cooperating part (25) to hold the lid securely on the body such as by snap-engagement.

Abstract: A container (4) has a closure (15) which consists of a flange (6) and a lid (1) which are joined together all the way round by a failure zone (2). When the container is originally sealed the closure is inserted into the opening and the flange is fixed to a flanged top surface (5) of the container which surrounds the opening. The failure zone is located at the point at which the internal surface (3) of the opening meets the top surface of the opening. The lid is dished inwards within the failure zone in such a way that the outer edge of the dishing (7) forms a guide (10) with the internal surface (3). A surface (8) of the lid extending parallel with the top surface is connected to the guide (10). The lid is broken open and is torn along the length of the failure zone by a locally applied force. The application of force inwards will as a rule move the lid over the distance a until the surface (8) makes contact with a ledge (11) located inside the container (4).

Abstract: Apparatus for digitally indicating the bearing angle of a source of microwave energy includes an antenna array of a plurality of antenna elements equispaced about an arc of a circle in a plane. Connected to each of the antenna elements is a different input port of a microwave power dividing and phase transforming hybrid matrix. Some of the output ports of the matrix are connected to input ports of a plurality of digital phase discriminators whose outputs emit a coded combination of binary level signals. The outputs of the phase discriminators are connected to an ambiguity resolving means which transform the binary level signals to an unambiguous digital word representing the bearing angle.