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Patent # Description
US-3,979,775 Magnetoresistive multitransducer assembly with compensation elements for thermal drift and bias balancing
An extra MR element is vapor deposited together with a plurality of MR read elements in a head assembly to balance the bias signal and to compensate for thermal...
US-3,979,774 Digital control system and method for the synchronization of audio-visual equipment
Disclosed is a digital control system and method for synchronizing audio-visual equipment for the presentation of film slides with corresponding sound...
US-3,979,773 Magnetic recording and reproducing apparatus
A magnetic recording and reproducing apparatus comprises a drive mechanism for running an endless magnetic tape of less than 300 m at a higher speed than 5...
US-3,979,772 Automatic tape loading type recording and/or reproducing apparatus
The invention relates to a recording and/or reproducing apparatus an automatic tape loading type. A loading mechanism is moved to a position for drawing a tape...
US-3,979,771 Magnetic tape phase encoded data read circuit
This digital circuit generates a window during which the data bit transitions of phase encoded data may be read from magnetic tape. This circuit contemplates a...
US-3,979,770 System for preventing erasure of audio recordings
A system prevents erasure of audio material pre-recorded on a magnetic recording strip on a card or photograph. Erasure of any selected portion of the recording...
US-3,979,769 Gate modulated bipolar transistor
A Gate Modulated BiPolar Transistor, or GAMBIT, is a three terminal negative resistance device. A load is connected between the emitter and collector terminals...
US-3,979,768 Semiconductor element having surface coating comprising silicon nitride and silicon oxide films
A semiconductor element having a surface coating consisting of, for example, a silicon nitride film and a silicon oxide film covering different surface portions...
US-3,979,767 Multilayer P-N junction semiconductor switching device having a low resistance path across said P-N junction
A semiconductor switching device is disclosed which includes a wafer comprising at least four semiconductive layers with adjacent layers being of opposite...
US-3,979,766 Semiconductor device
A semiconductor device is disclosed which comprises a first region of a first conductivity type, a second region of a second conductivity type and adjacent to...
US-3,979,765 Silicon gate MOS device and method
A MOS semiconductor device and method for forming same, including a semiconductor body of first conductivity type having a planar surface, said body having...
US-3,979,764 Controlled fading switching circuit
A switching circuit using a field effect transistor having a semiconductive substrate with a current path portion, first and second semiconductive regions...
US-3,979,763 Circuit board arrangement for collapsible camera apparatus
A collapsible camera apparatus of a type having at least two sections connected in pivotal relation to each other with a substantially planar surface associated...
US-3,979,762 Modular photographic system
A modular photographic system that performs a series of operating functions attendant to the consecutive exposure and processing of a cassette of ...
US-3,979,761 Auto-process camera
An auto-process camera which permits unloading, and subsequent reloading, of a cassette containing film monosheets, without the monosheets being exposed. When a...
US-3,979,760 Electrostatic recording apparatus with auxiliary electrodes
There is disclosed an electrostatic recording apparatus comprising a plurality of wire electrode groups each constituting a block, the corresponding wire...
US-3,979,759 Process and apparatus for electrographic recording utilizing contact liquid
In a process for the electrographic recording of images on an insulating recording substrate by means of a corona discharge the imagewise charging is carried out...
US-3,979,758 Electrostatic head with toner attracting plates
An electrostatic imaging system is disclosed having an imaging head characterized by a plurality of discretely chargeable areas. The charge on each discrete area...
US-3,979,757 Electrostatic display system with toner applied to head
An electrostatic imaging system is disclosed having an imaging head characterized by a plurality of discretely chargeable areas. The charge on each discrete area...
US-3,979,756 Method and apparatus for merging satellites in an ink jet printing system
In an ink jet recorder, a ferrofluid ink is supplied under pressure to a nozzle to form a continuous ink jet stream. The jet stream is subjected to two or more...
US-3,979,755 Rotating lens antenna seeker-head
A rotating lens antenna seeker-head provides conical scan capability for an ntenna system while simultaneously providing a two axis scan capability by positioning...
US-3,979,754 Radio frequency array antenna employing stacked parallel plate lenses
A radio frequency multibeam array antenna is disclosed wherein a beam forming network includes a first set of vertically disposed parallel plate lenses coupled...
US-3,979,753 Portable balloon antenna support structure
A portable antenna support structure which can be carried by a vehicle and includes an inflatable balloon and telescopic extension poles that are pivoted to the...
US-3,979,752 Pulse-type radar with modulated carrier frequency
A radar system emitting a recurrent sequence of n equispaced bursts of carrier frequency, varying from one burst to the next, has a transmitter including a...
US-3,979,751 Transmission device of a radiographic navigation system
A transmission device of a radiographic navigation system for azimuth determination, in which an electronic rotating directional beam pattern and a static...
US-3,979,750 Optical pump power distribution feed
An array of parametric amplifiers is optically fed pump power by a pump sce. Beam steering of the array is provided by changing the apparent phase of the pump...
US-3,979,749 Range readout apparatus
A range measurement system wherein range accuracies of fractions of a meter may be obtained. Nanosecond pulses, one triggered by the transmitter trigger with an...
US-3,979,748 Pulse radar apparatus
A long-range pulse radar apparatus emitting linear F.M. pulses and coherently detecting radar returns contains a chirp generator with a phase-control unit, a...
US-3,979,747 Control circuit for a character segment display assembly
A seven character segment display assembly with each assembly including a rotatable drum carrying a character display adapted to be viewed at a window of a...
US-3,979,746 High-speed Manchester code demodulator
A demodulator for decoding the Manchester code is described in which the bit rate is maximized by using a one shot set up for a pulse width less than one-half...
US-3,979,745 System and method for linearizing analog measurements during analog-to-digital conversion
An instrument for linearizing a non-linear analog output produced from a sensor such as a thermocouple to obtain a true measurement of the parameter or...
US-3,979,744 Circuit arrangement for the digital control of operating functions via sensor electrodes, especially in radio...
The invention provides for the digital control of the operating functions in a radio or T.V. receiver using sensor electrodes in place of mechanical control...
US-3,979,743 Displays
A liquid crystal analogue display device has a pair of electrodes between which a nematic liquid crystal material is disposed, so that the liquid crystal is...
US-3,979,742 Apparatus for generating graphical configurations
Apparatus for forming graphical configurations, such as alphanumeric characters, on a radiant energy surface, such as the face of a cathode ray tube, with an...
US-3,979,741 Power loss alarm system
A power loss alarm system in which an electric power supply is connected to a relay so that the relay is energized while the power supply is on. If the power...
US-3,979,740 Monitoring system
A monitoring system for use as an intruder alarm. The system which is designed to reduce the likelihood of generating false alarms, e.g. alarms generated in the...
US-3,979,739 Apparatus for the detection of vibration in rotating machinery
A transducer generates a signal whose amplitude corresponds to the vibration amplitude of a machine under test. The output of the transducer is passed to a...
US-3,979,738 Compound detector for magnetic domain memory devices
In a magnetic domain memory, a domain detector system includes a passive domain splitter in a domain propagation track, a first detector in the propagation track...
US-3,979,737 Bistable magnetic bubble domain devices
A magnetic film is incorporated in a device suitable for use with a computer; the film is capable of supporting magnetic bubble domains of two different sizes...
US-3,979,736 Circular magnetic domain devices
A circular magnetic domain device which includes a layer of a polycrystalline or amorphous uniaxial magnetic material having a single unique easy magnetisation...
US-3,979,735 Information storage circuit
A non-saturating binary memory cell includes a bistable circuit comprising two cross coupled transistors with an offset resistor connected to their emitters and...
US-3,979,734 Multiple element charge storage memory cell
An integrated circuit memory system includes capacitive storage memory cells capable of storing n bits of information on n capacitors associated with multiple...
US-3,979,733 Digital data communications system packet switch
A data communications system designed to facilitate communications between digital computers typically routes fixed-length segments of data, called packets,...
US-3,979,732 Asynchronous status interlock circuit for interface adaptor
An asynchronous interlock circuit for an interface adaptor circuit in a digital system includes a D-type latch, a D-type flip-flop, and an RS-type flip-flop...
US-3,979,731 Method of and system for rationalizing the operation of open-pit mines
In an open-pit mine with several excavation sites and a fleet of trucks carrying ore from loading stations near these sites to a number of unloading stations,...
US-3,979,730 Interface adaptor having control register
A peripheral interface adaptor (PIA) circuit for data processing systems contains memory elements or control registers allowing modification under program...
US-3,979,729 Microprogram unit for a data processor
In a microprogram unit, an index store is provided to translate index addresses, derived from input instructions, into start addresses for microprogram routines....
US-3,979,728 Array processors
An array processor, operative as the peripheral of a sequential machine. Each processing element is organized on a bit-serial basis, with single-bit registers...
US-3,979,727 Memory access control circuit
In a control unit having a read only memory, a control program is provided which has provision for all features with which the machine may be equipped and for a...
US-3,979,726 Apparatus for selectively clearing a cache store in a processor having segmentation and paging
In a data processing system that uses segmentation and paging to access data information such as in a virtual memory machine, the cache store need not be...
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