Abstract: A method and apparatus are provided for generating a control signal for compensating a temperature controlled crystal oscillator system for changes in an ambient temperature. The method includes the steps of providing a set of second-order coefficients relating ambient temperature to frequency drift over at least a portion of an operating temperature range of the temperature controlled crystal oscillator system and calculating a control signal for compensating the temperature controlled crystal oscillator system for the frequency drift due to the ambient temperature based upon the set of second-order coefficients.

Abstract: A frequency-adjustable oscillator suitable for digital signal clock synchronization comprises a SAW oscillator circuit for generating an analog controlled-frequency signal and a sinewave-to-logic level translator circuit in a double-sided package. The SAW oscillator circuit includes a tunable SAW resonator, a gain stage for energizing the SAW resonator, a voltage-variable control input for adjusting a frequency of the controlled-frequency signal, and a voltage-variable capacitive element operably linked to the SAW resonator and responsive to the control input. The sinewave-to-logic level translator circuit is operably linked to the SAW oscillator circuit and configured to generate a digital logic output signal having substantially the same frequency as the controlled-frequency output signal.

Abstract: A joystick has a base and a cover mounted over the base. A stick has a first end extending from the cover and a second end. A gimbal has a first and second yoke that are coupled to the stick to allow the stick to move. The yokes each have a first and second end. A pair of wipers is mounted to the first ends of the yokes. A pair of resistors is positioned between the wipers and the base. The resistors are adapted to generate an electrical output signal indicative of a position of the stick when a voltage is applied to the resistors. Several terminals are mounted to the base. A first portion of the terminals are electrically connected to the resistors. A switch is positioned in the base below the second end of the first yoke. The switch is activated when the first yoke is sufficiently rotated so as to cause the second end of the first yoke to contact the switch and to close the switch.

Abstract: In a multi-part cover for a storage space of a roof in the rear of a vehicle, which cover comprises a center part and side parts pivotally connected to the center part, a common operating mechanism for operating the parts of the cover depending on the position of the roof is provided with a coupling between a roof operating linkage and a cover operating linkage whereby the roof operating linkage can be uncoupled from the cover operating linkage when the roof is deposited in the rear storage space for permitting longitudinal movement of the cover into an end position, in which it covers the roof in the storage space and the side parts of the cover are pivoted outwardly from the center part of the cover.

Abstract: A duplexing filter 10 suitable for use in a mobile communication system. The filter 10 has a core of dielectric material 12 with several through holes 30 that define resonators 25. The core 12 has metallized surfaces 16, 18, 20, 22 and 24 except for the top surface 14. Several metallized resonator pads 60 surround each of the through holes 30 on the top surface 14. A metallized serpentine region 61, 62 extends from one or more of the resonator pads 60 toward a side surface 18 of the core 12. The metallized serpentine region 61, 62 causes attenuation of a third harmonic frequency.

Abstract: A seat belt tension sensor is attached to a seat belt in a vehicle. The seat belt tension sensor includes a housing attached between the vehicle and the seat belt. A limit structure is located in the housing. A sensor is attached to the limit structure for generating an electrical signal in response to the sensor being placed in tension. The electrical signal changes as a function of tension on the seat belt. The limit structure moves between a first position in which the limit structure transfers the seat belt tension to the sensor and a second position in which the limit structure transfers the seat belt tension to the housing.

Abstract: A method and apparatus are provided for reducing a startup interval of a temperature controlled crystal oscillator chip. The method includes the steps of connecting an operating circuit of the temperature controlled crystal oscillator chip into a first configuration to reduce the startup interval following application of power and reconnecting the operating circuit into a second configuration after a predetermined time period.

Abstract: A retractable hard top for a vehicle including a linkage and a top guide track for moving the hard top from a top up position to a stowed position. The retractable hard top linkage includes a pivot bracket that is movable within the top guide track to limit the clearance necessary for folding the hard top into a stowed position. A tonneau is provided to cover the retractable hard top storage area in both the top up and stowed position. Rear quarter windows are shifted from a top up position in which they function as windows to a stowed position in which the windows are shifted outboard of the retractable hard top and rotated to a stowed position. The retractable hard top, trunk lid, rear quarter window, tonneau, and roll bar may be assembled as a single unitary module with the linkages that coordinate operation of the retractable hard top, trunk lid, rear quarter window, and tonneau to facilitate assembly to a vehicle.

Abstract: A vehicle roof which can be adjusted between a closed position and an opening position has an adjusting device and at least one side window which during the transfer between the closed and opening position can be pivoted via a rotational joint by an actuating element. The actuating element is coupled on one side to the side window at a distance from the side-window rotational axis and is connected on its opposite side to an element of the adjusting device.

Abstract: A semiconductor device has a lower metal layer, a lower dielectric layer on top of the lower metal layer, an upper metal layer on top of the lower dielectric layer, an upper dielectric layer on top of the upper metal layer, and a contact region formed as a cavity that extends through the upper dielectric layer, the upper metal layer and the lower dielectric layer for access to a solder pad portion of the lower metal layer. A dielectric lining layer lines a peripheral cavity-confining surface of the cavity, and is transverse to a plane of the lower metal layer. The dielectric lining layer isolates the upper metal layer from the lower metal layer while permitting access to the solder pad portion of the lower metal layer. An electrical contact fills the cavity, and enables external electrical connection with the lower metal layer.

Abstract: In a folding convertible roof for a vehicle which roof is movable between a closed position, in which it covers the interior of the vehicle, and an storage position, in which it is folded into a storage compartment behind the vehicle interior the folding roof includes a roof support structure with a roof material and side support elements extending at opposite sides of the roof and being mounted each on a pivot member which is pivotably and tiltably supported and coupled to the actuating element capable of pivoting and tilting the pivot member while opening or closing said roof for transferring the side support element between the closed position, in which it extends longitudinally along a side of the roof and a transverse storage position.

Abstract: An ovenized oscillator has two ovens. One of the ovens is heated by a heater and the other is cooled by a thermoelectric module. The ovenized oscillator has an inner oven with an oscillator located inside. A thermoelectric heat pump cools the inner oven. An outer oven contains the inner oven and the thermoelectric heat pump. A heater heats the outer oven. The ovenized oscillator is operated with the inner oven temperature being lower than the outer oven temperature to improve component life and reduce crystal aging.

Abstract: A resistive composition for screen printing onto a substrate. The resistive composition, based on total composition has a) 5-30 wt. % of polymer resin, b) greater than 0 up to and including 10 wt. % of thermosetting resin, c) 10-30 wt. % conductive particles selected from the group consisting of carbon black, graphite and mixtures thereof and d) 0.025-20 wt. % carbon nanoparticles, wherein all of (a), (b), (c) and (d) are dispersed in a 60-80 wt. % organic solvent.

Abstract: An improved temperature compensated quartz oscillator, which includes a package for mounting compensating circuitry over a cavity instead of on a planar layer, reduces the chip failure rate by preventing undesired contact of the compensation circuitry with the material forming the layer upon which the circuitry is mounted.

Abstract: In a folding top for vehicles, in particular passenger cars, it is proposed to assign to the folding top, between its closing position and its put-away position, an intermediate position in which the folding top assumes a folded-together stowage position, from which the folding top can be transferred as a stack into the put-away position or can be unfolded into the closing position.

Abstract: In a removable vehicle roof including an operating mechanism for moving the roof between a closed position in which the vehicle roof covers an interior vehicle space and a storage position in which the vehicle roof is deposited in a rear storage compartment, the operating mechanism includes operating and coupling arms which are pivotable relative to each other and provided with locking means for locking the vehicle roof in position in the storage compartment and also for rigidly interconnecting the operating and coupling arms when the vehicle roof is in a closed position.

Abstract: In a convertible vehicle roof, which is movable between closed and open positions, and which includes front and rear roof parts which are joined by a kinematic linkage arrangement by which the roof parts, which, in a closed position, are disposed closely adjacent each other, are, upon opening of the roof, first linearly moved apart before the front roof part is pivoted below the rear roof part for placement in a storage compartment.

Abstract: A dual band voltage controlled oscillator that has low phase noise. The oscillator includes two voltage controlled oscillators that are each coupled to a tank circuit for adjusting the output frequency. One voltage controlled oscillator operates at a low frequency and one operates at a high frequency. Both voltage controlled oscillators are coupled to a combiner circuit that provides the oscillator output signal. A low frequency bandstop filter is coupled to the output of the second voltage controlled oscillator. The low frequency bandstop filter operates so as to reject the low frequency.

Abstract: A convertible top for covering part of a passenger compartment of a land vehicle. The convertible top includes a retractable frame that retracts forwardly toward a permanent top section. The retractable frame is covered by a flexible cover and a rigid rear member moves longitudinally as the convertible top is moved between an extended and retracted position. The rigid rear member includes track followers that are moved in longitudinally extending tracks on the rear portion of the vehicle body. The retractable frame may be either a parallel bar expanding linkage, or telescoping slide supports.

Abstract: In a convertible vehicle with a hardtop vehicle roof comprising at least two roof parts, which are movable between a closed position in which to roof parts cover the interior space of the vehicle and an open position in which the roof parts are in storage compartment behind the interior vehicle space, and wherein the roof includes a rear window which is removable from the roof and utilized, in a raised upright position, as a wind deflector, the roof parts and the window are separated from each other and fitted when the roof is open, into the storage compartment behind the interior space in an upright position one behind the other transverse to the longitudinal vehicle direction.