Abstract: An FET crossbar switch device is implemented by using a split gate electrode and a shared source and drain pad to implement source and drain electrodes on an integrated circuit substrate. First and second inputs to the device are associated with first and second transmission lines, each of which is directly connected to a first and second source electrode areas. Disposed between the source electrode areas are respective drain electrode sections, each of which is coupled to an associated output transmission line. The input and output transmission lines are fabricated directly on the integrated circuit substrate. Gate fingers or electrodes are directed between respective drain electrodes and adjacent source electrodes. By properly biasing the gate electrodes, one can direct the first input to the first output with the second input directed to the second output. In a second state the first input can be connected to the second output with the second input disconnected or connected to the first output.

Abstract: A digital attenuator circuit for attenuating RF frequencies implemented as an MMIC having series microstrip transmission lines between an RF input terminal and an RF output terminal and having at least one shunt path comprised of a series combination of a MESFET able to be switched between a conducting state and a nonconducting state and a thin-film resistor, wherein the circuit employs a distributed topology whereby when the MESFET is in the conducting state the impedance of the microstrip transmission lines matches the impedance of the shunt elements thereby enabling the circuit to operate over a wide bandwidth.

Abstract: The present invention is a knob which attaches to the switch post of a push/pull switch. The knob selectively disengages from the switch post as the knob is inadvertently impacted, thereby isolating the push/pull switch from the impacting force. The knob moves independently of the switch post and contacts the housing supporting the switch. Consequently, the force of impact is directed to the housing through the body of the knob and very little force is directed to the switch.

Abstract: A motor vehicle seat recliner includes an upper member (34) which is supportive of a seat back (22) and a lower member (36) which is supportive of a seat cushion (21) and is carried for longitudinal adjustment within a host vehicle. An adjuster (40) is operative to establish a substantially fixed angular position between the members, the adjuster including a longitudinally disposed drive screw (62) which is restrained from axial displacement in one direction by an abutment surface (56) which is defined by a thrust plate (46) carried by the lower member and a link (130) which is pivotally interconnected to the screw by a traveling member (126) and is also pivotally interconnected to the upper member by a parallel arrangement of a link control bracket (144) and a displaceable lock plate (154), whereby frontal impact imposed moment arm forces will subject the link and screw to substantially pure compressive loading.

Abstract: A track assembly for a vehicle includes an upper track slidably mounted in a lower track. A seat belt buckle mounting bracket is attached to the upper track and connects a fixed seat belt to the upper track. The seat belt buckle mounting bracket includes first and second angularly disposed legs, with the first leg attached to the upper track and the second leg attached to a fixed seat belt buckle. The seat belt buckle mounting bracket is stationarily mounted in a first, normal operating position in which the second leg of the bracket extends upward from a side wall of the upper track, but rotates from the first position under a force applied through the fixed seat belt to a second position in which the second leg of the bracket is substantially aligned with the longitudinal axis of the upper track to place the first and second legs of the bracket in tension with the applied force. The second position provides a strong geometry position for the seat belt buckle mounting bracket.

Abstract: A speech coder apparatus operates to compress speech signals to a low bit rate. The apparatus includes a continuous speech recognizer (CSR) which has a memory for storing templates. Input speech is processed by the CSR where information in the speech is compared against the templates to provide an output digital signal indicative of recognized words, which signal is transmitted along a first path. There is further included a front end processor which is also responsive to the input speech signal for providing output digitized speech samples during a given frame interval. A side information encoder circuit responds to the output from the front end processor to provide at the output of the encoder a parameter signal indicative of the value of the pitch and word duration for each word as recognized by the CSR unit. The output of the encoder is transmitted as a second signal.

Abstract: The video data of an image sequence are encoded and decoded section by section, with each nth key frame data field being transmitted as completely as possible. From two adjacent key frame data fields, n-1 phantom image data fields are calculated at the transmitting and receiving ends taking into account n-1 motion fields. Further, n-1 difference image data fields are determined at the transmitting end and transmitted together with the key frame data fields. At the receiving end, the original sequence of data fields is reconstructed from the transmitted data fields by recalculation of the motion fields.

Abstract: The present invention is an image intensifier assembly that includes a Generation III image intensifier tube and an inverter lens arrangement, such that the present invention image intensifier assembly can be substituted for a Generation II image intensifier tube in a given application. The inverter lens arrangement is adjustably positionable relative to the Generation III image intensifier tube so the image relayed can be focused to optimize the resolution of the complete tube assembly.

Abstract: The present invention is an off-axis collimator used to monitor the optoelectronic performance of a radiometer, which off-axis collimator is comprised of a single off-axis paraboloidal mirror, a broadband radiant energy source housed in an integrating sphere, detectors for monitoring the performance of the broadband radiant energy source, and a housing for the collimator.

Abstract: A zoom system for enlarging a portion of a video image chosen on a display screen by a cursor wherein the cursor is controlled by a remote position-dependent transmitter. An electrooptical arrangement receives positional signals from the remote transmitter causing the cursor to move on the display screen in relation to the movement of the remote transmitter. The cursor is used to select a portion of the displayed video image to be enlarged. Once chosen by the cursor, the selected portion of the video image is enlarged in a zoom circuit and shown on the display screen in place and stead of the original image.

Abstract: A non-corrosive double-wall tubing in which an unbrazed, unsealed continuous double-wall tube of a given circumference is formed from a metal sheet composed of a first non-ferritic metal having a first defined region of exposed non-ferritic metal and a second region of a second metal in overlying relationship thereto, said exposed region having a width essentially equal to the circumference of the finished tube.

Abstract: A method is provided of making a photoemissive cathode including bonding an electron emissive layer to a glass faceplate at an elevated temperature and pressure to form a cathode structure and cooling the cathode structure at a rate which will maintain stress between the electron emissive layer and the faceplate at or below a predetermined level in order to avoid brush marks and crosshatchings during subsequent processing steps. The cathode is cooled from a bonding temperature to room temperature in approximately twenty minutes or less.

Abstract: An insertion indicator device (10) is employed in conjunction with a quick connector (12) assembly comprising a male element (14) and a female element (16). The indicator device includes a base member (112) carried within the female element. Two or more leg members (114, 116) extend axially from the base member and terminate adjacent an axial housing opening. A generally annular indicator member is disposed substantially adjacent the opening and releasably engages the ends of the leg members. Means are provided to axially displace the base member upon engagement of the male and female elements to effect separation of the base and indicator members. Lastly, guide means are provided to ensure the maintenance of proper orientation of the indicator device with respect to the quick connector before and during the engagement process.

Abstract: A device for adjusting the relative inclination of two elements, and in particular, the relative inclination of a back member of an automotive seat pivotally connected about a rotational axis to a base member of the seat for movement through a predefined arc is disclosed. The device can include at least an enveloping gear sector for pivotal connection to the base member about an axis generally coaxial with the rotational axis between the back and base members. The gear sector preferably includes plastic concave teeth formed thereon. An enveloping worm is provided for rotatable connection to the base member. The worm preferably is formed of at least one plastic concave worm having at least a single thread. The worm is disposed in double enveloping engagement with the gear sector. A rotatable cam is pivotally connecting the sector gear to the base member. The rotatable cam is pivotal along a predefined arc about an axis of rotation generally coaxial with the rotational axis of the back member.

Abstract: A boardlock is provided for holding down the housing of an electrical connector to a circuit board, which can be constructed at low cost and which assures good electrical and mechanical connection between the connector housing and circuit board. The boardlock is designed to be pushed downwardly through a cylindrical hole in a connector flange and through a larger diameter cylindrical hole drilled into the circuit board. The boardlock is formed from a piece of sheet metal which is bent to form largely tubular upper and lower portions (40, 42, FIG. 2 ) received respectively in the flange hole and in the larger diameter board hole, with largely vertical edges of the bent sheet metal engaging the walls of the hole.

Abstract: A shield is provided for placing around an edge connector that is mounted near the edge of a circuit board, which can be readily mounted on the board. The shield (36, FIG. 2) includes an arm (72) with an outer part (74) that extends down along the outer board edge (70), and an arm inner part (76) that extends inwardly below the board lower surface (46) and that has a clamp end (80) that presses up against the board to thereby clamp the shield to the board without the need to drill holes or the like in the board. The board has a grounded conductive trace (50) on its upper surface, and the shield is formed of sheet metal with tabs (52, 54, 56) at its lower ends which extend horizontally and slightly below the rest of the shield sides, to press directly against the grounded trace on the board. The arm which has an inner part below the board, can include a 90.degree. bend (140, FIG. 5) so that the sheet metal inner arm part (142) lies primarily in a horizontal plane.

Abstract: A limiter circuit responds to an input signal which has a plurality of frequencies within a given band. The input signal is split up into two frequency ranges by means of a low pass filter for one range and a high pass filter for a second range. The output of the low pass filter is directed to a first limiter while the output of the high pass filter is directed to a variable notch filter. The outputs from the first limiter and the notch filter are added together to provide a sum signal. The sum signal is applied to a second limiter which performs limiting strictly according to the amplitude. The outputs of the second limiter signal provide the desired signal and a control signal to determine how often the second limiter is limiting. The control signal varies the attenuation of the notch filter. In this manner frequencies, within a selective range and which will be otherwise effected by the spurious frequencies generated during limiting, are reduced.

Abstract: A power seat adjuster includes first and second spaced track assemblies, each formed of an upper track slidably mounted on a lower track anchored to a vehicle floor. A drive block disposed in each upper track rotatably engages a lead screw bi-directionally rotated by a drive transmission coupled to the output shaft of a horizontal drive motor mounted between the track assemblies. A drive block mounting bracket supports each drive block and has a leg extending through an elongated slot in the upper track and an aperture in the lower tracks to a fixed connection to the lower track. A seat support plate is disposed adjacent each upper track and is connected to a seat. A pair of vertical drive motors are each coupled through a lead screw, a rotatable shaft and pivot links to opposite ends of the seat support plates for selectively varying the vertical position of the ends of the seat support plates with respect to the track assemblies.

Abstract: Apparatus is provided for connecting rows of contact pads on a leadless integrated circuit (22, FIG. 1 ) to rows of traces on a circuit board (24), which facilitates the connection and which facilitates substitution of a probe for the integrated circuit. The apparatus includes a socket (32) forming a largely rectangular cavity (34) which closely receives the integrated circuit (22), the socket having a lower portion with elongated slots (51-54), each slot holding an elastically compressible interface device (60). Each interface device has a row of compressible conductors each having an upper end engaging a contact pad (26) on the integrated circuit and a lower end engaging a conductive trace (30) on the circuit board. With the socket securely held to the circuit board, the socket can be used to hold a probe (220, FIG. 13 ) with a probe board (222) having contact pads (224) on its lower surface that can lie at the same locations as the contact pads on the integrated circuit when it lies in the socket.

Abstract: A connector is described, which can be inserted into a hole in a base to securely mount therein while enabling removal and secure reinstallation. The base (14, FIG. 3) has a hole with an undercut groove (30). A connector mount portion (24) has a recess (42) that holds a snap ring (26). The snap ring has a gap that allows the snap ring to contract during insertion, and to then expand to lock into the groove in the base. An elastomeric spring ring (50) lies between the bottom of the recess in the mount portion and the radially inner surface of the snap ring, to prevent the snap ring from falling off prior to installation of the connector. The spring ring is readily compressed (at 50 in FIG. 8) when the snap ring is compressed during installation. A pair of contacts of the connector include vertical and horizontal portions (100, 102, FIG. 3) connected by a middle portion (110) that is bent at a right angle.