Abstract: A waveguide feed structure having a coaxial transmission line. A conductive, planar septum is disposed in, and along a diameter of, the transmission line. A feed port is electrically coupled to the transmission line. The septum has a rear portion disposed proximate the feed port, such rear portion of the septum extending between the inner conductor and the outer conductor. The feed port and the rear portion of the septum are arranged to establish an electric field in the transmission line between the inner conductor and the outer conductor with a component substantially TE11 mode along a direction perpendicular to the planar septum. A forward portion of the septum is asymmetrically disposed with respect to said diameter in order to provide a gap between the inner conductor and the outer conductor, such gap establishing an electric field component within the transmission line having a TE11 component along said diameter of the transmission line parallel to the plane of the septum.

Abstract: An arrangement for multi-standard duplex filtering for mobile terminals in a telecommunications system. The arrangement includes a substrate on which a first array of filter elements and a second array of filter elements are formed. The filter elements have different frequency bands in accordance with mobile telecommunications standards. The first array filters an incoming signal received from an antenna and provides an output at port in accordance with a matched frequency band of one of the standards. The second array filters a signal to be applied to port in accordance with a matched frequency band of one of the standards prior to transmission through antenna. The filter elements may comprise surface acoustic wave devices formed on a single substrate.

Abstract: A filter with an equivalent circuit that functions as well as physically larger filters without substantial drop off in performance.

Abstract: An electronic device comprises a non-metallic waveguide, a tunable component mounted within the waveguide, and a conductive layer on a surface of the waveguide. The tunable component can comprise a tunable filter. The non-metallic waveguide can comprise a plastic material. Connections for applying a tuning voltage to the tunable component can be provided. A temperature sensor can be connected to the waveguide.

Abstract: Waveguides and backplanes systems are disclosed. A waveguide according to the present invention includes a first conductive channel, and a second conductive channel disposed generally parallel to the first channel. A gap is defined between the first and second channels that allows propagation along a waveguide axis of electromagnetic waves in a TE n,0 mode, wherein n is an odd number, but suppresses electromagnetic waves in a TE m,0 mode, wherein m is an even number. An NRD waveguide is disclosed that includes an upper conductive plate and a lower conductive plate, with a dielectric channel disposed between the conductive plates. A second channel is disposed adjacent to the dielectric channel between the conductive plates. The upper conductive plate has a gap above the dielectric channel that allows propagation along a waveguide axis of electromagnetic waves in an odd longitudinal magnetic mode, but suppresses electromagnetic waves in an even longitudinal magnetic mode.

Abstract: A structure of digital transmission line having a core material, a middle material layer and a coating layer. The core material is a transmission medium enveloped with an insulation PE foam layer. The coating layer includes at least one layer and is made of polyvinyl chloride. The middle material layer is provided between the core material and the coating layer, and is characterized by that the middle material layer is comprised of a copper foil wrapping layer, at least a metallic-wire knitting layer and a foamed Telfon-tape wrapping layer (PTFE). The middle material layer can get 100% obscuring, can minimize the degree of mutual interference, can maintain the characteristic impedance at 75&OHgr;, and can get the result that no refraction or reflection of transmitted signals is induced during transmission.

Abstract: The invention relates to a microwaveguide that is integrated in the dielectric layer of a conductor carrier, e.g. a printed circuit board. The waveguide enables different types of active and/or passive functions intended to influence the signals sent through the waveguide to be integrated at appropriate positions in the waveguide.

Abstract: A circuit breaker includes a housing, separable contacts, an operating mechanism having a pivotally mounted operator handle for opening and closing the separable contacts, and a trip mechanism releasing the operating mechanism to move the operator handle to its tripped position. A micro-switch includes an actuator lever movable between an actuated position and a non-actuated position and adapted to engage a surface of the operator handle. The micro-switch also includes a normally open contact having a closed state corresponding to the actuated position and an open state corresponding to the non-actuated position. The operator handle surface engages and moves the actuator lever to the actuated position in only the ON position of the operator handle. The actuator lever is in the non-actuated position in the OFF position and the tripped position of the operator handle.

Abstract: A monitor hinge having a magnet plug and a magnetic switch plug. The magnet plug and magnetic switch plug have countersink heads to seat in the hinge fastening holes and insert through juxtaposed hinge holes into drilled holes in the door and wall jambs.

Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.

Abstract: In an electromagnet (10) having a magnet coil (13), which has an exciter winding (23) wound from an insulated winding wire (24), having a magnet core (14), having a movable armature (16) opposite the magnet core (14), and having a restoring spring (21) engaging the armature (16), a plurality of meltable stanchions (26) of electrically conductive material that are connected electrically conductively to one another are disposed on the magnet coil (13), for the sake of later calibration of the magnetic force furnished by the completed electromagnet (10). The winding wire (24) is guided around each of the stanchions (26), in selected windings of the exciter winding. To adjust the desired magnetic force, at least two stanchions (26) are melted, so that they form a reliable weld with the winding wire (24), through the wire insulation thereof (FIG. 4).

Abstract: A ferromagnetic tube, with an electric current passing through a conductor coiled on the outside of the tube, will produce a magnetic field on the inside of said tube when the tube is long relative to the diameter and will produce a magnetic field on the outside when the tube is short relative to the diameter. With a ferromagnetic center post, placed axially within said tube and with ferromagnetic end caps, connecting the center post to the tube, a conductor coiled on the center post will produce a magnetic field on the outside of the tube when the tube is long relative to the diameter and on the inside of the tube when the tube is short relative to the diameter. This phenomena has direct applications to charged particle containment, electromagnets, transformers and other inductive devices.

Abstract: An ignition apparatus includes a high voltage (HV) terminal formed of stamped sheet metal configured to be disposed in a secondary winding spool, and to which a high voltage end of the secondary winding is attached and soldered. The ignition apparatus further includes an electrically conductive cup configured to surround the high voltage terminal when the secondary winding spool is inserted in the case. The high voltage terminal has one end that comes into engagement with an inner annular surface of the cup. The cup includes an annular sidewall that extends axially up to a winding flange where a HV end of the secondary winding exits a winding bay thereby surrunding the exiting HV secondary winding wire. The cup provides for a reduced electric field concentration.

Abstract: A coil constructed using the additive technique on the surface of a substrate is characterized in that the conductors of the coil are in contact with an insulating material made at least in part of diamond or diamond-like carbon.

Abstract: A fuse block for cabinet mounting provides a shaft that may exit a side of the cabinet to be received by a handle mounted on that side. A finger attached to the inner cabinet door provides for an interlock by engaging with a bolt communicating with the shaft preventing inadvertent opening of the cabinet when the fuse block is connected to power and/or connecting the fuse block to power when the cabinet door is open.

Abstract: An object is to provide a thermal fuse that is free of a trouble of welding contact between a movable electrode (4) and a lead (2) even when temperature of an equipment to which the thermal fuse is connected rises gradually and that has small electric resistance at the time of conduction.

Abstract: A device has an electrical load and a cavity for receiving a temperature-dependent switching mechanism in order to protect the load from overtemperature and/or overcurrent. In the cavity there is a first countercontact for the switching mechanism which is electrically connected to the load, and a second countercontact which is electrically connected to an external terminal for supplying electricity to the load. The cavity is configured for receiving a housingless switching mechanism that, below its response temperature, is in direct contact with the two countercontacts.

Abstract: A switch head is disclosed that can be attached to a temperature sensor having elongated expansion elements with different thermal expansion coefficients. The switch head further includes a device for measuring the displacement of the expansion elements relative to each other. Attachment means are provided for attaching at least one additional switch head. At least one opening for receiving a transfer member to transfer the relative displacement of the expansion elements to the at least one additional switch head is provided.

Abstract: A method of making a chip resistor is provided. According to this method, an aggregate board is first prepared which includes a first region and a second region which are spaced from each other via an excess portion. Then, a conductor pattern is formed which extends to bridge the first region and the second region. Subsequently, a resistor element is formed in each of the first region and the second region for connection to the conductor pattern. Then, the aggregate board is cut at the excess portion. The conductor pattern includes a thinner-walled portion extending across the excess portion and a thicker-walled portion connected to the thinner-walled portion and spaced from the excess portion.

Abstract: In a communications system having an authentication function, a relaying apparatus 3 is used. This relaying apparatus 3 has an authentication circuit 6 for checking whether reader/writers 2-1 to 2-n are authentic or not by detecting whether or not the authentication signals from the reader/writers 2-1 to 2-n have been subjected to a predetermined calculation operation within the reader/writers 2-1 to 2-n, a multiplexer 5 for switching the lines connecting between the reader/writers 2-1 to 2-n and, a PC 4 in accordance with the results of the authentication processes performed by the authentication circuit 6, and a calculation circuit 7 for performing a predetermined calculation operation on the authentication signals from the reader/writers 2-1 to 2-n and for feeding them back to the reader/writers 2-1 to 2-n.

Abstract: A method and device for reading a set of tags, each with an ID code, of N bits, wherein the identification of these codes is carried out successively, bit by bit, by scanning a binary search tree with ∑ i = 1 N ⁢   ⁢ 2 1 branches, each representing the value 0 or 1 of one of the N bits, each branch being connected to the branch of the complementary value 1 or 0 via a node and being read only one during a tag set read sequence.

Abstract: A remotely activated sensory stimulation device comprised of a case, a tactile stimulatory means, a receiving unit, a transmitting unit and a controller. The amplitude and frequency of the tactile stimulation is adjustable to provide different prompts or to alter the prompt. The device is further camouflaged with a second functionality to eliminate any social stigma. The device is useful for teaching individuals with a variety of learning disorders including Autistic Spectrum Disorder, Attention Deficit Disorder and Attention Deficit Hyperactivity Disorder.

Abstract: A method of communicating data in a bicycle data processing system comprises the steps of communicating first information from a transmitter to a receiver, wherein the first information has a first rate of change; and communicating second information from the transmitter to the receiver a plurality of times, wherein the second information has a second rate of change that is greater than the first rate of change. A method of storing data in a bicycle data processing system comprises the steps of receiving a first data item a first time; storing a value of the first data item in a first memory; receiving the first data item a second time; comparing a value of the first data item received the first time with a value of the first data item received the second time; and storing the value of the first data item received the second time in the first memory when the value of the first data item received the first time substantially equals the value of the first data item received the second time.

Abstract: An alarm device generates an alarm when a distance between a vehicle and an object that exists in a set region in front of the vehicle is smaller than a set distance. A controller of the alarm device determines a tentative set distance based on at least one of a running speed of the vehicle and a relative velocity between the vehicle and the object, and then corrects the tentative set distance based on at least a deceleration of the vehicle, so as to determine a final set distance.

Abstract: A system for monitoring various engineering conditions of a vehicle tire/wheel assembly such as temperature, pressure, tire rotation and other operating conditions of the tire and wheel. A tag with radio frequency read/write capability is located on the tire and includes data storage of tire identification and tire specific information. A tag with radio frequency read/write capability is located on the wheel and includes data storage of wheel identification and wheel specific information. Either tag may act as permanent storage devices including the information of both tags when queried by transmitted radio frequency waves.

Abstract: An apparatus for shutting off power to a gate motor is disclosed when the gate to which the gate motor is connected is opened or closed manually. In a preferred embodiment a sensor is activated that immediately shuts off power to the gate motor upon insertion of a crank into a receptacle on a pulley of the power driven gate movement system to commence manual opening or closing of the gate with the crank. Rotation of the crank in the appropriate direction either opens or closes the gate. Power is restored to the gate motor when the sensor determines that the crank has been withdrawn from the pulley.

Abstract: The present invention generally relates to a method of monitoring a safe comprising the steps of providing (402) an electronic lock for the safe; receiving (404) information from a security device in an area proximate to the safe; and making (406) security information from the security device during a transaction with the electronic lock. According to another aspect of the invention, an apparatus for monitoring a safe comprises an electronic lock (144) incorporated in a safe; a control unit (142) coupled to the electronic lock; and a security system (148) coupled to the control unit.

Abstract: A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area, the protected area and a temporary containment area (201), with a first door (38) at the infeed area portion of the chamber, a second door (46) at the protected area portion of the chamber, and a third door (47) at the temporary containment area portion of the chamber. A person entering the protected area must pass through a contraband detector such as a metal detector (90,92) and enter the chamber. If no alarm was provided by the detector, the doors allow exit from the chamber into the protected area. If an alarm was provided by the metal detector, the doors only allow the person to enter the temporary containment area. The chamber is weighed or otherwise examined after at least some cycles of operation to assure that no contraband was concealed within the chamber.

Abstract: There is provided a receptacle system for detecting at least one metallic object entering therein and alerting a user in response to the detection. The system of the preferred embodiment comprises a receptacle body forming an interior cavity. Moreover, a cover may be engaged to the receptacle body, in which the cover may define an opening for providing access to the interior cavity. A metal detector may be attached to the cover to detect the at least one metallic object entering through the opening of the cover. Thereafter, the metal detector may alert the user in response to the detection of the at least one metallic object.

Abstract: A luggage locating system for facilitating location of luggage within an airport. The luggage locating system includes a remote transceiver assembly comprising a first transceiver means for transmitting a unique remote signal. A base transceiver assembly comprises a second transceiver means for transmitting a unique luggage signal. The second transceiver means transmits the unique luggage signal to the first transceiver means when the second transceiver means has received the unique remote signal from the first transceiver means. The first transceiver assembly comprises an indicator assembly. The indicator assembly is operationally coupled to the first transceiver means whereby the first transceiver means actuates the indicator assembly for indicating to the user that the base transceiver assembly is within a predetermined range of the user when the first transceiver means receives the unique luggage signal from the second transceiver means.

Abstract: Security elements that are flexible, that can be used for merchandise and preferably can remain on the merchandise, that are difficult to locate, that can be incorporated into the merchandise during its manufacture and that have a simple design, i.e., merchandise security elements that can be economically produced and used. A merchandise security element which is intended for use in connection with acoustomagnetic merchandise security systems formed of a flat section of a swingable metal foil and a flexible, magnetic metal foil which are arranged in an overlapping fashion within a predetermined surface region and which are fixed relative to one another by means of a non-conductive spacer that cannot be magnetized and is arranged in between the two metal foils within the overlapping surface region.

Abstract: A method for using multi-functional RFID tag assemblies, passive repeater systems and modular antenna systems. One embodiment comprises a method for communicating with an RFID tag by providing a passive loop modular antenna system, moving the RFID tag through a field related to the modular antenna system and transmitting energy through the antenna to communicate with the RFID tag. In a further embodiment, the RFID tag includes a passive loop in proximity with the RFID tag to improve the signals received and transmitted by the tag. In another embodiment, the RFID tag is removeably attached to a product container having a product therein and adapted to be removed from the container and re-attached to the product or a second container.

Abstract: An apparatus and method for identifying a carcass during meat production. In one embodiment, the apparatus includes a band sized to fit around a limb of the carcass and a readable identification tag affixed to the band for remote identification of the carcass. In another embodiment, the apparatus includes a block adapted to couple to a trolley carrying the carcass and a readable identification tag coupled to or embedded in the block. The readable identification tag may be used to read and write information relating to the carcass to a database.

Abstract: Wireless tags have a plurality of non-equivalent current pathways, each of which responds differently to an interrogation signal and collectively represent encoded information. The element is subjected to the signal, stimulating the current pathways, each of which contributes to an overall element response. The individual contributions and, hence, the information may be recovered from this overall response. The response of each of the pathways to the signal may vary in terms of one or more of resonant frequency, amplitude, damping, and Q factor.

Abstract: An anti-theft hang tag comprises a substrate of a continuous strip of material, such as plastic, cardboard or plastic, the substrate having a first substantially planar portion and a second portion foldable relative to the first portion about a fold line. An electronic article surveillance (EAS) device is permanently adhesively secured to the substrate first portion. A separate cover portion having a substantially planar portion overlies and is permanently secured to the substrate first portion, the EAS device being permanently sealably sandwiched between the separate cover portion and the substrate first portion. In one arrangement of the anti-theft hang tag, the foldable portion is folded over the cover portion and is releaseably secured thereto by a pressure sensitive adhesive. In another arrangement of the anti-theft hang tag, the substrate foldable portion is folded under the substrate first portion and is releaseably secured thereto by a pressure sensitive adhesive.

Abstract: A pest control system includes pest control devices installed about an area or building. These devices each include a bait member and a wireless communication circuit. The wireless communication circuit may be in the form of a passive RF tag that transmits information indicative of bait status and an identifier unique to each pest control device. The wireless communication circuit can be configured in a first assembly for detecting the presence of one or more pests and a second assembly for delivering a pesticide once pests are detected. The assemblies are interchangeable within a pest control device housing. The wireless communication circuit is connected to a sensor having an electrically conductive element that can be comprised of a nonmetallic material, such as a carbon-based ink. One or more connection members electrically couple the wireless communication circuit and the sensor. These members are comprised of an electrically conductive, elastomeric compound, such as a carbon-filled silicone rubber.

Abstract: A fault detection system detecting malfunctions or deteriorations, which may result in an inverter fault, is provided. The system has a temperature sensor installed on a semiconductor module to monitor a temperature rise rate. It is judged that an abnormal condition has occurred if the thermal resistance is increased by the deterioration of a soldering layer of the semiconductor module or by drive circuit malfunctions and, as a result, the relation between an operation mode and the temperature rise rate falls outside a predetermined range.

Abstract: Disclosed is a method and apparatus for automatically aligning a passenger bridge to a door of an aircraft. The apparatus includes a sensor in the form of a laser range finder, a local computer for receiving signals from the sensor and for controlling bridge movement in dependence thereof, and memory storage for storing data relating to features of aircraft models with which the bridge is to be connected. Automated bridge alignment proceeds under the control of the local computer in dependence upon a determined error factor exceeding a predetermined minimum threshold value, which value is one of a default value and a value specified by a user of the apparatus. Accordingly, the instant invention permits different airlines to accept varying levels of risk associated with automatic bridge alignment.

Abstract: Identifying the mounting locations of sub-systems in mounting units, such as rack cabinets, is disclosed. A mounting unit has a number of sub-system mounting locations. Each of one or more sub-systems is mounted in a corresponding sub-system mounting location of the cabinet. Each of one or more active indicators has an indicator mounting position on either the mounting unit or one of the sub-systems. Each of one or more sensors has a sensor mounting position similarly on either the mounting unit or one of the sub-systems, and also detects indication from a corresponding active indicator. The active indicators and the sensors cooperatively function to identify the corresponding sub-system mounting location of each sub-system in the mounting unit.

Abstract: In a first aspect, the present invention is a method, apparatus, and system for detecting a change in position of a door or a window in an alarm system with a singular housing having a magnetometer for monitoring the magnetic field of the earth, and a microprocessor for detecting a change in the position of the singular housing with respect to the magnetic field of the earth. The microprocessor generates an alarm signal upon detecting the change, and causes the alarm signal to be transmitted, by wireless transmission, to a remote receiving station. The device may also be used to determine if an object that it is affixed to has been moved, such as for a theft alarm for an object such as a painting. In a second aspect of the invention, a gravitational sensor is used to monitor the gravitational field of the earth and determine if an associated object or person has been moved with respect to the gravitational field, thus providing motion detection and signaling an alarm.

Abstract: A visual-sound-reproducing system includes a display panel mounted on a ceiling of a cabin to reproduce a picture on a monitor screen; a moving mechanism moving the display panel toward a home-position that the monitor screen of the display panel is nearly parallel to a ceiling of a cabin of an automobile and a play-position that the monitor screen of the display panel faces rearward; and a visual-sound device providing information regarding visual and sound. The moving mechanism includes a rotational axis extending in a direction crossing a longitudinal direction of an automobile to support rotationally the display panel, a rotational means driving rotationally the display panel about the rotational axis, a guide member extending in the longitudinal direction of the automobile, and a rectilinear moving means moving reciprocally the display panel in the longitudinal direction of the automobile, the display panel being supported on the guide member to allow a slide of the display panel thereon.

Abstract: An electronic price label locator which uses signal strength and noise level information associated with signals from the electronic price label. The locator includes an input device which records identification information distinguishing the electronic price label from other electronic price labels. A receiver receives signals from the electronic price label. Signal strength and noise level determining circuitry measures signal strengths and noise levels associated with the signals. Processing circuitry determines a direction to the electronic price label. Finally, a display displays the direction. The locator may also be portable and include a hand-held housing.

Abstract: A system for sensing subterranean acoustic waves emitted from an acoustic source includes a plurality of laser sources, a plurality of subterranean optical sensors, at least one optical detector, and electronics. The laser sources each emit light at a different frequency. The subterranean optical sensors receive the light and alter the light in response to the acoustic waves. The optical detector receives the altered light and outputs an electrical signal. The electronics receives the electrical signal and converts it into seismic data format. Preferably, the light emitted from the optical sources is modulated at a plurality of modulation frequencies. The electronics can be used to demodulate the signal. The electronics may demodulate the electrical signal by mixing the signal with periodic waveforms having frequencies corresponding to the modulation frequencies and twice the modulation frequencies.

Abstract: There is provided a system and method for controlling at least one traffic light having a vehicle having a transmitter and a receiver for transmitting and receiving traffic control signals, and a control unit for processing traffic control signals; and a traffic control module having a transmitter and a receiver for transmitting and receiving traffic control signals, a control unit for processing traffic control signals, traffic light control logic for controlling the at least one traffic light, and means to connect to the at least one traffic light; wherein the traffic control signals control the flow of traffic about the at least one traffic light enabling a vehicle to travel from a present location to a destination passing through intersections at which traffic flow is controlled by the at least one traffic light; and also including means for controlling at least one traffic light on a selected optimal route in response to the traffic control signals.

Abstract: An on-vehicle emergency report apparatus, an emergency communication apparatus and an emergency report system are disclosed. The emergency report apparatus includes an emergency situation prediction unit for predicting the possibility of a vehicle involved encountering an emergency situation, a report control unit and a communication unit. The communication is established based upon the determination of the emergency situation prediction unit, which predicts the possibility of the vehicle encountering an emergency situation a predetermined time later, based on at least one of the feature quantities including the distance between the vehicle involved and the vehicle running immediately ahead, the relative speed, the relative acceleration, the speed of the vehicle involved, the brake pedal stroke, the steering wheel angle and the expression of the driver.

Abstract: A system for providing vehicle location information or confirmation of remote entry system operation to a user. In one embodiment, a vehicle transceiver receives a wireless vehicle device function signal, and a vehicle controller generates a vehicle device control signal for use in operating a vehicle device in response. The vehicle controller also confirms operation of the vehicle device, and the vehicle transceiver transmits a wireless vehicle device function confirmation signal. A remote unit includes a transceiver for operation by the user for transmitting the vehicle device function signal and for receiving the vehicle device function confirmation signal. The remote unit also includes an indicator for providing an indication to the user confirming operation of the vehicle device, and a storage device for storing retrievable data representing the indication confirming operation of the vehicle device.

Abstract: A method and an apparatus to control the rotation of an object. In the method, first and second actual control variables which vary as the object rotates are measured. It is determined whether the first actual control variable is smaller than a predetermined control variable. It is determined whether a period of time has elapsed if it is determined that the first actual control variable is smaller than the predetermined control variable. A difference between a physical quantity that is generated corresponding to the first actual control variable and the second actual control variable is obtained, and a control amount to control the object is determined by using the difference, if it is determined that the predetermined period of time has elapsed or the first actual control variable is larger than the predetermined control variable. Here, the predetermined control variable corresponds to a position to which the object should be rotated to stop the object at a desired position.

Abstract: A capacitive sensor including a first electrode that has at least one conducting surface being disposed for receiving an alternating current signal, and a second electrode that has at least one conducting surface being disposed to generate an input signal for a detecting device. The sensor further includes a middle electrode that has at least one conducting surface placed between the first electrode and the second electrode, as well as being grounded to a ground. The at least one conducting surface of the middle electrode, the at least one conducting surface of the first electrode, and the at least one conducting surface of the second electrode are contained within a holding material holding within itself the first electrode, the second electrode and the middle electrode.

Abstract: A method of compressing a stereoscopic image, using entropy coding, wherein a model derived from a first eye image is used to encode an image for a second eye, and wherein the model is determined from a first eye difference image of a first frame and a second frame of the first eye image; and a second eye difference image of a first frame and a second frame of the second eye image, will be encoded using the model.

Abstract: An intelligence bearing signal in the form of a string of digitized analog signals is communicated from a source site to a destination site. The signal is in the form of a string of digitized analog signal samples. A sub-string dictionary, a linked list and an ID list are provided at the source site and the destination site, and are used to compress the intelligence bearing signal for faster transmission.