An apparatus for receiving, detecting and storing a series of discrete bits of data transmitted in conjunction with a video signal wherein only a portion of the transmitted data is read and saved.

A rule acquisition method for expert systems receives input from the expert, one word at a time, and checks each word by determining alternative parses for the partial sentence as so far entered. Feedback is provided to the expert when a word does not conform to a required grammar, this feedback comprising a menu of legal next choices. When the sentence is completed it is translated into the form of a diagnositc rule. An expert system for troubleshooting electronic equipment is disclosed employi...

An acquisition circuit for a cardiac pacer includes an oscillator for producing an externally generated magnetic signal at a first predetermined frequency. An implantable cardiac pacer has a tuned inductor coil to be responsive to the magnetic signal for developing an induced signal with a phase-shift. Light-emitting devices are responsive to the magnetic signal and the induced signal are provided for transmitting optical signals which change gradually from flashing to a steady on condition when...

Digital data acquisition apparatus for periodically sampling a waveform. Periodic data acquisition signals are provided at predetermined intervals with the waveform being sampled at the predetermined intervals in response to the data acquisition signals. The apparatus has at least a first operation mode wherein waveform sampling is initiated on the occurrence of a trigger event. In this operation mode, the apparatus includes an improvement for increasing its effective sample rate by providing a ...

The present invention is directed to a new and improved combination operative with an image acquisition system wherein a field-of-view is panned over a fixed image format; said combination comprising a sensor, an optical system for imaging the field-of-view at the sensor, said sensor including four linear arrays disposed in quadrilateral configuration, two of said arrays being applied to each half of a beam splitter cube; row and column buffers which are continuously updated every integration pe...

A data acquisition system, e.g. for an intrusion alarm system, has a plurality of distributed sensors connected in sets to nodal units or concentrators. The concentrators are interrogated by clock pulses broadcast from a central control unit and when each concentrator's address is reached it transmits back to the central unit a set of pulse signals the widths of which represent the voltage levels of the respective sensors connected to it. Analogue sensor outputs may thus be transmitted. The sens...

Apparatus is so constructed as to employ a sampling beam of radiation of a form which at least approximates to a sinusoidal distribution of intensity between the extremities of its skirts, and is such that the range of sinusoidal variation has an extent of approximately four sampling intervals, whereby the sampling beams have themselves the effect of band limiting the required data to a spatial frequency of approximately half the sampling frequency.

A self-clocking binary data acquisition and transfer system in which each t of any data stream is divided into four time periods such that both 0 and 1 data bits are high during the first time period and a 0 will go low after the first time period and a 1 will be low after the third time period. The first, second and third time periods are used for transmission of information and the fourth for initialization.

A method of processing an electromagnetic signal received and contained completely within the bounds of a two dimensional signal detection array, is comprised of (a) determining a position of the signal in a large window on the detector array, (b) reducing the dimensions of the window by a predetermined ratio with the position of the signal at the center thereof, (c) locating the position of the signal in the reduced size window (d) repeating steps (b) and (c) until the window is a predetermined...

A CEDM data acquisition system (40) receives analog coil-current signals from control element drive mechanism coils (18, 20); conditions the analog signals to remove noise induced therein by the electronic circuitry (44) associated with the control element drive mechanisms; digitizes the conditioned analog signals; displays the acquired test data; and records the data for future use. The inventive data acquisition system preferably has the ability to simultaneously measure, display and record co...