A search and warning light system is disclosed, in its preferred forms, as including a light assembly having first and second lamp assemblies. The light assembly is mounted about a vertical axis for rotation in either a clockwise or counterclockwise direction and the lamp assemblies are mounted to the light assembly about a horizontal axis for rotation in either an upward or downward direction. A control module located in a remote location provides appropriate electrical input to the motors cont...

An all-digital, distance measuring radio equipment is disclosed wherein the duration of each cycle of operation is determined by a train of clock pulses which is applied to a plurality of counters. Detection of a reply signal triggers a search counter which then counts until the end of the cycle. At the end of the cycle the count acquired by the search counter is transferred into a memory counter which starts the subsequent cycle at this value, establishes a range gate upon reaching a count corr...

A search head for a metal detector, the head comprising a support body and three conductive loops mounted on the body, the loops being formed from a single ribbon cable. An oscillating signal is applied to one of the loops and induced voltages in the other two loops are subtracted, the arrangement being such that a difference will appear in the subtracted voltages when a metal object is closer to the other two loops.

A circuit for use in electronically sweeping the tuning capacitors of a radio receiver through their capacitance range for successively tuning in each station. The sweeping action stops automatically and the value of the tuning capacitors are held constant at each station which is picked up by the radio. The sweep function is restarted to drive the tuner toward the next higher frequency station by means of a manually operated switch. The tuning capacitors comprise voltage variable capacitance di...

A nondestructive ultrasonic test system which includes a search unit with a crystal transducer which is cylindrical in shape end radiates beams of ultrasonic energy normal to the cylindrical axis of the crystal. A conically shaped reflector surrounds the cylindrical crystal transducer and reflects the beams therefrom into the workpiece. The reflector is deformable for change of the included angle of the conical shape to focus the beam.

Scanning and path search circuits are provided in a switching exchange involving time division multiplex data and more particularly in an exchange employing pulse code modulation.

In an indirect digital frequency synthesizer comprising a voltage-controlled oscillator, a feedback loop connected from the oscillator output to its phase control input via a frequency divider, phase detector and low-pass filter, a reference frequency pulse source connected as a second input to the phase detector, and a digital comparator network for comparing the frequency of the feedback and reference pulses and generating output pulses when the feedback and reference pulses are not interlaced...

The disclosure relates to an automatic search tuner in which an erroneous stop of an automatic search operation can be prevented by an interference signal generated due to an intermodulation interference. The automatic search tuner comprises an attenuating means for attenuating the level of a received signal in a predetermined amount in response to a signal indicative of stopping an automatic search operation; and a comparing means for comparing the level of a signal obtained when the attenuatin...

A system for displaying the results of a search provided by one of two different search systems enabling continuous searching. One search system includes a search takeover data production command used to output search takeover data articles from the search. The other search system includes a search takeover data reading command used to read search takeover data. A document identifier correspondence table associates the identifiers specified in the search takeover data. When a user clicks a searc...

A disc player, for reproducing program information from a disc on which the information is recorded as digital program information data accompanied by digital address data, comprises an optical reader for reading program information data and address data from the disc, such reader being selectively operable in a searching mode and in a playback mode, processing circuitry supplied with program information data to produce program information from the program information data, a detecting means tha...