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modular display rack systems , which are easily configurable , have interchangeable components , and are capable of being packaged and shipped in small containers , are described . preferred methods for using modular display rack systems are also disclosed . in some of the embodiments disclosed , one or more ladder rac...
0Human Necessities
the present invention relates to a compound of the formula : ## str1 ## wherein r 1 is 2 - methyl - 1 - propenyl group or isobutyl group ; r 2 and r 3 are each hydrogen atom , an optionally substituted hydrocarbon residue or an optionally substituted acyl group or r 2 and r 3 may form a ring together with the adjacent ...
2Chemistry; Metallurgy
a card with a magnetic stripe when fed into a card reader can be illegally read by a read head unobtrusively attached to the outside of the card reader adjacent to the slot into which the card is fed . to defeat this illegal reading , movement of a card through the read head is interrupted thereby making it difficult f...
6Physics
a gas fired barbecue grill is provided with a horizontal refractor insert mounting briquette - like elements of fireproof material between the burners and the grill to simulate a charcoal or similar fire and eliminate grease fires by preventing grease from dropping on the burners .
0Human Necessities
a variable gain amplifier includes at least two amplifiers for amplifying a signal , the at least two amplifiers being connected in series with one another , and a variable resistor having a resistance that is controlled in accordance with a voltage applied to a control terminal , the variable resistor being connected ...
7Electricity
the present invention discloses a low - cost light source for optical transmission systems and optical networks based on wavelength - division multiplexing technology . a light source in accordance with the present invention is implemented by externally injecting a narrow - band incoherent light into a fabry - perot la...
7Electricity
a process for forming a semiconductor device comprises the steps of providing a semiconductor substrate assembly comprising a semiconductor wafer having an active area formed therein , a plurality of transistor gates each having a teos cap thereon and a pair of nitride spacers along each gate , a plurality of conductiv...
7Electricity
a method and apparatus for supplying liquids by means of a pump combination comprising two single oscillating displacement pumps is provided , wherein a supply pressure of the pump supplying liquid into a user duct is used as a control value of a pressure controller , such that a pressure stroke movement of the other p...
5Mechanical Engineering; Lightning; Heating; Weapons; Blasting
a sensor system comprising a substrate and integrated onto the substrate an array of sensor elements , each sensor element comprising one or more inductors , one or more electrochemical sensors , and one or more optical sensors . the system further comprising a controller configured in use to separately address each of...
6Physics
a method for physically executing parallel operations in a resource manager while retaining the effect of a defined logical serial ordering is provided . a plurality of operations is applied by a client application to the resource manager . the method includes commencing a transaction between the client application and...
6Physics
apparatus and methods for enhancing an electronic audio signal by adding enhancing harmonics to the electronic audio signal . the present invention includes a field inducing coil through which input electronic audio signals are to be transmitted to set up an electromagnetic field . the field inducing coil is weakly cou...
7Electricity
a laser system for the generation of an ultra - short light pulse — with a laser resonator which contains at least one active solid - state oscillator element , preferably a thin disk of a laser - active crystal with a high amplification bandwidth , particularly of a “ quasi - three - level ” system such as yb : yag — ...
7Electricity
a method and system of selective data transmission is disclosed . a plurality of data packets are transmitted wherein at least a portion of the data packets have one or more predetermined identifiers . the data packets having the predetermined identifier are selected and forwarded to a desired recipient .
7Electricity
a gear reduction unit for use particularly in an electric motorcycle . the gear reduction unit uses three adjacent gears . the three gears are straight cut gears , which make a sound when they turn together . the sound provides audio feedback so that bystanders can hear when the motorcycle is approaching , notwithstand...
5Mechanical Engineering; Lightning; Heating; Weapons; Blasting
with two features of positive lock and self - pop - up , the invention provides simple procedure for connecting and disconnecting spark plugs and spark plug wires , a union of prevention and ensurer .
7Electricity
a timepiece , such as a watch , has a plurality of concentric rotating bands , viewable from both above and from the side so that a viewer may read the time without changing the orientation of the timepiece . the timepiece has an attachment mechanism that permits the removable attachment of objects , such as sculptures...
6Physics
a method of harvesting a stalk - based plant , such as sugarcane , includes generating at least one laser beam and causing the at least one laser beam to at least momentarily come into contact with the sugarcane stalk . this severs the stalk and cauterizes the stalk where severed .
0Human Necessities
in one aspect , a light emitting unit comprises : a first semiconductor layer having a first electric property ; a second semiconductor layer having a second electric property disposed over the first semiconductor layer ; an active layer disposed between the first semiconductor layer and the second semiconductor layer ...
7Electricity
a method of side - cutting by a turret punch press for improving working efficiency to a large extent . the method comprises a step in which a selected one of a plurality of punch chips arranged so as to be selectively hit in a punch assembly provided on the upper turret is used for side - cutting a workpiece and the o...
8General tagging of new or cross-sectional technology
a monitor assembly includes a monitor , for displaying output of a diagnostic device such as a fluoroscope , to which is operationally attached a bracket that is operative to secure the monitor to the diagnostic device so that an operator of the diagnostic device can view the output while operating the diagnostic devic...
0Human Necessities
in one embodiment of the present system invention , there is provided a dividing module positioned in the holding tank of a toilet to separate the holding tank into a main portion and a reserve portion . the dividing module has a height lower than the full water level in the holding tank . the dividing module includes ...
4Fixed Constructions
a cartridge for an electrical immobilization weapon for optimized effectiveness and accuracy , comprising : a housing means for accommodating first and second projectiles adapted for being spaced within a targeted portion , having a length of at least from 5 inches to 25 inches , of a human body and for transmitting th...
5Mechanical Engineering; Lightning; Heating; Weapons; Blasting
the invention provides a method for cutting out very small sized semiconductor devices , mounted on a gold base , including the formation of depth indicators etched through the active layer , on a manufacturing wafer , and penetrating into the substrate , said indicators being metallized then , after masking , the gold...
7Electricity
a method and apparatus for inputting an end - user &# 39 ; s current brand name and , in return , providing at least one comparable branded product to the end - user where the category of branded products are non - comparison shopped products . in one embodiment , the method and apparatus is utilized in the area of med...
6Physics
an assay device for testing of liquid samples for drugs of abuse has a transparent container for retaining a liquid sample . a backing member is within the container and is curved so that its front surface corresponds to the curvature of the container wall . immunoassay test strips are on the front face of the backing ...
0Human Necessities
the invention relates to a method for monitoring a communication system , comprising : acquiring and storing data about timeout events or faulty transfers in connection with at least one signaling process in at least one first communication terminal of the communication system ; and creating a collection of such data a...
7Electricity
novel equipment utilizing a single head , single gap on a single track in an audio magnetic recorder to permit control of a large variety of audio - visual devices for the pre - programming of a multi - media presentation in educational , entertainment and other fields . particular structure , including an audio magnet...
6Physics
the invention provides devices and methods for sampling , detecting and / or characterizing particles . devices and methods of the invention , including particle samplers , impactors and counters , include a filter component for removing particles in the exhaust flow of the device , for example , to eliminate or minimi...
6Physics
system flexibility and ease - of - design is greatly enhanced in a network wireless / rfid switching device by using a multicore abstraction layer to interface between a multicore hardware platform , a device operating system and the packet transfer functions of the system . such an architecture may be particularly use...
7Electricity
a wind power plant , a wind power plant controller and a method of controlling a wind power plant are provided . the method includes a ) preparing a telegram comprising wind turbine controlling data for one of the plurality of wind turbines of the wind power plant ; b ) sending the telegram to the wind turbine upon com...
8General tagging of new or cross-sectional technology
a compact solid - state laser has its cavity formed by the reflection surface of a gain crystal and the reflection surface of a chirped mirror . pumping light is incident to the cavity through the reflection surface of the gain crystal or the chirped mirror , from which the laser output is led out . forming of the cavi...
7Electricity
medical instruments and methods of using the instruments are described . in some embodiments , a medical instrument includes a housing , a stylet having a portion in the housing , a movable first member in the housing , the movable member being connected to the stylet , and a second member located in the housing to red...
0Human Necessities
the present invention relates generally to card games and specifically , card games played for monetary gain in casinos . the game is an improvement over the traditional method of playing blackjack or “ 21 ” in that it adds an incentive for a player to make a supplemental wager that also affects the betting strategy of...
0Human Necessities
lubricating varnishes for metals obtained by mixing a dispersion of graphite fluoride in glycerine with a separately prepared aqueous dispersion of graphite fluoride , stabilized by a salt of a condensate of naphthalene sulfonic acid with formol .
2Chemistry; Metallurgy
a decorative strip for ceramic , natural stone or synthetic coverings or coatings , in particular for the formation of walk - in showers with a sloped floor , comprising a decorative strip profile having a visible decorative surface , characterized in that the decorative strip has a holding profile in which the decorat...
4Fixed Constructions
a semiconductor device having an improved voltage control oscillator circuit is provided . the voltage control oscillator circuit includes , in combination , a variable - capacitance element and at least one bipolar transistor on a single semiconductor substrate . the variable - capacitance element includes reversely s...
7Electricity
the embodiments described herein disclose a bottle and cap . the cap seals the bottle and thereby defines a compartment within the bottle for storing liquid or other material . the cap also includes an internal compartment for storing a liquid or other material in a sealed manner . the cap is designed to readily allow ...
1Performing Operations; Transporting
a slurry composition for chemical mechanical polishing is provided . the slurry has a component of abrasives , such as alumina , silica , ceria , etc , an aqueous ozone with determined concentration , and an additive . a ph value of the slurry composition is between 1 and 10 .
2Chemistry; Metallurgy
an apparatus and a method for transferring data and energy over network units of a defined network . the apparatus has at least two units , a bus coupling the units with a receive line and a transmit line and a bus control device coupled with the bus , the bus control device having first means for controlling the trans...
7Electricity
the present disclosure concerns a high frequency imager including a pixel matrix , each pixel including a high frequency oscillator , a transmission line positioned at a distance from an active surface of the imager smaller than the operating wavelength of the oscillator , a first end of the line being coupled to the o...
7Electricity
a system and method is presented for reducing skew between the positive and negative components of a differential signal in a high speed communications link . the communications link includes a signal generator producing and transmitting complementary positive and negative signals over separate transmission lines and a...
7Electricity
the invention relates to a helical coil comprising multiple reversing sense helical coil units that are capable of drug elution , come in lengths appropriate for long , diffuse lesions , have the ability to have a step - wise tapering diameter , and provide all the benefits of a small closed cell stent design while mai...
0Human Necessities
an automotive ball joint assembly includes a polymeric bearing disposed within a housing . the bearing includes an inner surface . a metallic stud includes a first end having a substantially spherical member and a second end having a shaft . the spherical member includes an outer surface capable of pivotal engagement w...
8General tagging of new or cross-sectional technology
a catalytic gas generator for an electrothermal thruster comprises a catalyst chamber , a capillary propellant tube communicating to the chamber and a tubular thermal standoff connecting the tube to the chamber wherein the tube is connected at a location spaced from the tube inlet into the catalyst chamber .
2Chemistry; Metallurgy
a method , computer program product , and computer system for creating a dynamic directory of objects . a request to modify a dynamic directory of a plurality of objects is received . each of the plurality of objects is associated with one or more attribute - value pairs . one or more first object attribute - value pai...
6Physics
a backup copy of a source data volume is created by first performing an instant virtual copy with source volume identifier suspended , then creating a physical tape backup copy from the instant virtual copy with the source volume id being reintroduced . this creates an exact duplicate of the source volume with minimal ...
8General tagging of new or cross-sectional technology
the instant invention provides a two - step polymerization process for preparing amphiphilic poly , - block - polyester copolymers and other diblock and triblock copolymers consisting of pvp as one block . the block copolymers of the invention can be used as vehicles for drug delivery .
2Chemistry; Metallurgy
for the shaping of a microstructure substrate via a mold cavity , an unmolding device allows an abrupt , shear - free separation , in particular at reaction temperature , of the microstructure substrate manufactured using the reaction molding method . optical waveguide components meeting stringent damping requirements ...
1Performing Operations; Transporting
a stair making apparatus is disclosed . the stair making apparatus comprising a bench adapted to support a plurality of members and a beam ; a stop fixture connected to the bench , the stop fixture having a plurality of stops for individually engaging each of the plurality of members ; and one or more fasteners connect...
8General tagging of new or cross-sectional technology
the invention relates to device for providing a safety for passengers and to devices , providing the passenger comfort . there are disclosed variants of load limiter accomplishment for a restraint a passenger in a vehicle , which have a possibility to hold the preliminarily given force . the invention concerns a multi ...
1Performing Operations; Transporting
a contrast ratio promotion method for a display device is provided . the display device contains a back light module having a brightness and has a maximum luminance . the contrast ratio promotion method comprises the steps of continuously receiving a picture signal during each unit time , continuously calculating a rat...
7Electricity
a vertically adjustable armrest that is suitable for use in connection with various types of passenger vehicles , including commercial aircraft . the armrest includes a slide mechanism for permitting easy height adjustment of the armrest and also includes a locking mechanism for securely locking the headrest in the des...
0Human Necessities
an electronic equipment holding device configured for holding any kind of cellular phone , navigational device , hand - held personal computer , digital recorder , or any similar portable device . the holding device comprises a base portion configured to fit within a standard cup holder , and a device retainer portion ...
7Electricity
an exercising apparatus for a speed skater or similar athlete including a base having a plurality of board members arranged in side - by - side relationship . hinges pivotally connect adjacent board members to each other . a flexible plastic sheet overlays the board members and has a smooth glide surface on which the s...
0Human Necessities
a semiconductor device in a continuous diffusion region formed on a semiconductor substrate and having either a p - type or n - type polarity includes : a first transistor formed within the continuous diffusion region ; a second transistor formed within the continuous diffusion region and in an area that is different f...
7Electricity
the present invention provides a disk for recording specified data having a plurality of helically formed track areas with one round of the circumferential direction of the disk as one track and a plurality of sector areas in which the plurality of track areas given track numbers added continuously from the outer perip...
6Physics
the present invention relates to a flexible and reusable wrapping product and system for promoting the same and creating a kit at a point of purchase for enwrapping a consumer item . in one embodiment , a series of at least for elastic panels are interconnected forming a bounded region with a concealable or concealed o...
1Performing Operations; Transporting
a container includes two container halves and a hinge connecting the two container halves so that the two container halves can be pivoted between a folded up position and a folded down position . in the folded up position the container includes a bottom , four side walls and an upper filling opening and is stackable on...
1Performing Operations; Transporting
the invention provides a flywheel system comprising a flywheel mounted for rotation within a chamber , a vacuum pump system and a valve for selectively closing a passage , wherein the chamber is coupled to an inlet of the vacuum pump system via the passage . the invention also provides a method of controlling the start...
5Mechanical Engineering; Lightning; Heating; Weapons; Blasting
a catalytic gas detector circuit in which the temperature of a resistance gas sensing element , contained in a bridge circuit , is temporarily increased by energizing a current changing network for a finite period of time sufficiently long enough to burn impurities off of the surface of the sensing element .
6Physics
the permeability of a mixture to be agglomerated is measured by means of ateast one permeability - measuring device situated upstream of a mixer directly preceding a feed hopper feeding an agglomerating apparatus . water is added to the mixture in the mixer . the measured permeability value is utilized to influence the...
2Chemistry; Metallurgy
a process for electrochemically depositing a structured surface layer on a component , such as a machine component , particularly a steel water cylinder of a printing press , is disclosed . the process comprises the steps of defining an electrical parameter , such as a potential and / or an electrical current , effecti...
2Chemistry; Metallurgy
a flush mount fork tube cap nut for a triple tree of a motorcycle , having a cap nut that is threadedly engaged to the end of the fork tubes of a triple tree of a motorcycle steering assembly so that the top of the cap nut is flush with the top of the triple tree .
1Performing Operations; Transporting
a central housing is provided in a generally rectilinear configuration . the central housing has a horizontal open top , a horizontal open bottom and side walls . a horizontal divider panel is provided between the top and the bottom . a plurality of interchangeable upper components is chosen from the class of upper com...
0Human Necessities
a paper tube consisting essentially of one or a plurality of paper tapes formed into a tube and a blend adhesive comprising two or more aqueous adhesives different in their concentrations adhering the paper tapes , its production and a package using it . in the paper tube , the adhesive can be coated into a thin film l...
1Performing Operations; Transporting
in a multiple coupling lock system and method for an environmentally sealed filling or refilling of a first container or a first hose , a first coupling lock has an opening area which is opened . a first flexible conveyance unit has a first end connected to the first coupling lock in an environmentally sealed manner . ...
1Performing Operations; Transporting
disclosed is a “ tracker system ” that includes implanted electrical leads which are part of an implanted cardiotracker plus external equipment that includes external alarm means and a physician &# 39 ; s programmer . the tracker system is designed to monitor the degradation of a patient &# 39 ; s cardiovascular condit...
0Human Necessities
a display device includes a plurality of pixels respectively including a plurality of light - emitting elements , a comparing unit for comparing input image signals during a plurality of continuous frames for each pixel and determining whether the input image signals are repeated , a signal converter for converting the...
6Physics
systems and methods are described for providing a reconfigurable circuit having multiple distinct circuit configurations with respective distinct operating modes the circuit may be controllably configures to perform a fast fourier transform function , a multiplier function , and a divider function . in one exemplary pr...
7Electricity
a computer - executable ratiometric analysis method determines integer components of a rational number ratio or a close approximation of an irrational number ratio . in one embodiment the method uses a ratio of rotational speeds of two rotating assets in a machine or process , generates a new rational number based on t...
6Physics
an encoding method for an optical recorder provides an optical recorder with an encoder for encoding data received from a computer . additionally , the optical recorder includes a processor for controlling operations of the encoder . the encoding method includes receiving data of a next mode , which is different from a...
6Physics
a precious - metal material for articles of jewelry and having low specific weight , high resistance to corrosion , in spite of a low content of precious metals , and free from toxic constituents which consists of 33 to 99 wt . % precious metal powder , 1 to 67 wt . % of a thermosetting organic plastics and 0 to 10 % f...
2Chemistry; Metallurgy
a method for automatically transferring multiple semiconductor devices from a first substrate to a second substrate comprises steps of providing a first substrate on which the semiconductor device is formed , providing a second substrate directly under the first substrate , automatically moving the first substrate towa...
1Performing Operations; Transporting
this invention relates to novel nylon compositions that maintain their appearance on weathering in the presence of u . v . light and a process of their manufacture . these composition are useful in a variety of applications including fibers , molded plastic parts , films and coatings .
2Chemistry; Metallurgy
the present invention provides a device for forming an image on a photoconductive image carrier in an image forming apparatus . the device comprises a light source for generating a light beam , an aperture for shaping the light beam generated by the light source , a deflector for deflecting the light beam shaped by the...
6Physics
a furnace for fining molten glass is provided in which glass flows in a substantially vertical direction prior to exiting the furnace . as it flows vertically , the glass is allowed to cool . this cooling , in turn , allows the glass to be removed from the furnace through a narrow passageway without producing excessive...
2Chemistry; Metallurgy
a method for determining the ambient concentrations of a plurality of analytes in a liquid sample of volume v liters , comprises loading a plurality of different binding agents , each being capable of binding specifically and reversibly an analyte of interest onto a support means at a plurality of spaced apart location...
8General tagging of new or cross-sectional technology
a cmos device formed with a silicon on insulator technology with reduced drain induced barrier lowering characteristics and a method for producing the same . the method involves a high energy , high dose implant of boron and phosphorus through the p - and n - wells , into the insulator layer , thereby creating a boroph...
7Electricity
a motor vehicle door lock or the like has a housing or a lock bearing plate , a rotary latch with a jaw for a locking wedge or lock bolt and a pawl for locking the rotary latch in a locking position which corresponds to the closed motor vehicle door . several complementary measures are proposed which can be applied tog...
4Fixed Constructions
a rope tow for use on a ski slope . rollers are rotatably mounted one above the other on a fixed frame ; the bearing surfaces are in frictional engagement . one of the bearing surfaces has a plurality of ridges . a knotted endless rope is passed through the engaged surfaces . the ridges clamp the rope as it passes ther...
1Performing Operations; Transporting
in a system , method and apparatus for the frequency management of processors in a multi - processor computer system , a first processor requiring a first level of performance is operated at a specific frequency and consumes a portion of the thermal and power budget . a second processor requiring a second level of perf...
8General tagging of new or cross-sectional technology
a method for preparing a magnetic recording medium comprising a non - magnetic support having coated thereon a magnetic layer containing plate - shaped ferromagnetic fine particles oriented perpendicular to a plane of the surface of the support , the process comprising the steps of : coating the non - magnetic support ...
6Physics
this invention comprehends a small drag assembly that is conveniently mounted in the rear part of the housing of the spinning style fishing reel . the drag assembly includes a knob mounted at the rear of the housing . a pocket is provided in the housing to accommodate the small and simple drag system .
0Human Necessities
a motor drive system is disclosed that includes a power input configured to receive alternating current power and a rectifier having a switching frequency selected to convert the ac power to direct current power . the motor drive unit also includes an input filter circuit connected between the power input and the recti...
7Electricity
a knife sharpening system mountable in a small vehicle is disclosed . the knife sharpening system includes a grinding device including a motor , and an abrasive member directly connected to the motor without using a reduction device , to reduce loss of power transmitted from a battery to the abrasive member , and a wat...
1Performing Operations; Transporting
a method of detecting parkinson &# 39 ; s disease through mri of substantial nigra pars compacta tissue . the method involves obtaining a gray matter suppressed mri signal from the snc tissue , obtaining a white matter suppressed mri signal of the snc tissue , and combining information from the gms and wms mri signals ...
6Physics
a detection circuit is disclosed for use in reflective mode optical mark readers employing led &# 39 ; s as light sources . the subject circuit includes a bias network which sets a contrast threshold for detection and which compensates for temperature variations . the subject detection circuit is ratio dependent rather...
6Physics
in an ethernet network element comprising at least one line interface element and a central processing unit to control forwarding of data packets at the network element , a method comprising receiving continuity check messages at the at least one line interface element , and processing the ccms in the at least one line...
7Electricity
a system for anchoring a guitar string comprising a guitar top , a bridge fixed to the guitar top , and at least one aperture extending through the bridge and top for receiving an end of a string with a ball attached thereto . a bridge pin has a body that is insertable into the aperture . the body has two spaced - apar...
6Physics
can ironing die members for use in a tool pack assembly which is part of a can body making apparatus used in forming cups into can bodies and wherein each can ironing die member is mounted in a fixedly mounted holding member so that the can ironing die member can be moved in radial directions by the cup from an initial...
1Performing Operations; Transporting
a signal acquisition instrument , such as an oscilloscope , having an input stage that is referenced to a user &# 39 ; s ground is disclosed . information gathered by the input stage is stored in a storage element powered by a floating power supply that is referenced to the user &# 39 ; s ground . after storage , the s...
6Physics
the invention relates to a method for managing the plugging of membrane modules and of filtration membranes , in particular for nanofiltration , ultrafiltration or reverse osmosis for desalinating water , which comprises carrying out consecutive rinsing operations for controlling clogging , in particular biological clo...
2Chemistry; Metallurgy
a switched mode controller for properly handling an under - voltage condition in a power line which includes a current mirror for receiving current from the power line ; a reference current source coupled to the current mirror for supplying a reference current ; and a power transistor coupled to the reference current s...
7Electricity
an apparatus which outputs very low duty cycle pulses of a consistent width . it is common to use a pulse width modulator as part of a liquid crystal display dimming system to vary the brightness . in the typical pulse width modulating scheme for lamp dimming , certain noise irregularities may appear at the beginning o...
6Physics
a technique is described that allows a viewer to eliminate a fixed information band portion of a television image from a television display by “ stretching ” the main program portion to fill the screen , effectively pushing the undesired crawl or advertising band off of the display . this eliminates a feature of many t...
7Electricity
an optical disc apparatus comprising an optical servo loop and a velocity servo loop to control the velocity of a pickup to zero , wherein the two servo loops are selectively switched in accordance with the set mode of disc playing or the state of such playing . when a fast access is executed , the pickup is controlled...
6Physics
overbased mgo dispersions with high magnesium content and acceptably low viscosities are reproducibly prepared without gel formation by heating to 280 - 360 ° c . a mixture of mgo , selected dispersants , low mw carboxylic acids , water and a combination of high boiling hydrocarbon and organic diluent , wherein water i...
2Chemistry; Metallurgy
the optical system , which is comprised of a thin layer of ion conducting , macromolecular material , or solid polymer electrolyte sandwiched between two electrodes presenting each a conducting deposition carried by a support plate such that at least one of the conductor depositions and the associated support plate are...
7Electricity
a radio link adapter for wireless transmission of multimedia data through a communication link between a radio access network and a mobile station , is provided . the information flow is constantly monitored to determine an information element type of service requirements and for allocating paired radio link adapters d...
7Electricity
a directional microphone system gain adjusts the sum of signals that are received from two microphones mounted spaced apart . the gain adjustment is generally proportional to the product of the two microphone signals . analog multipliers are used both for multiplying the signals together and also to form a gate that ga...
7Electricity