Abstract: A digitally adjustable time delay circuit which is able to precisely and selectively provide fine delay steps increments, which increments can be one nth of the delay time of one CMOS inverter, including means to adjust the total range of the delay and size of each delay step.

Abstract: Apparatus and method for programmably providing information on a dedicated output pin of an integrated circuit, which information is diagnostic about a plurality of nodes inside of said integrated circuit by connecting said plurality of nodes and a programmable set of binary gate signals to a combinatorial logic circuit and controlling the selection of said nodes being input to said logic circuit so that said combinatorial logic circuit provides a real time diagnostic signal to said dedicated output pin.

Abstract: An improved ECD employing an ECD cell having a third electrode, i.e. guard positioned between the ECD cell field electrodes. The guard electrode is physically interposed between said field electrodes to divert all leakage current in the support insulators which flow between the field electrodes. The guard electrode ECD cell provides improved linear dynamic range as well as avoiding deterioration from handling during manufacture or repair.

Abstract: A digital circuit for independently controlling the delay of the falling edge and the delay of the rising edge of a digital signal which consist of two serially connected circuits which contain identical synchronous delay lines connected to a logical switch.

Abstract: A power efficient selective mass range trap filling process in which the RF trapping voltage connected to the ring electrode is slowly modulated simultaneously with: (1) e-beam ionization bombardment and (2) application of a broadband supplemental waveform containing selected secular frequencies to the QIT end caps. The modulation permits the reduction of the number of frequency components required in the broadband supplemental waveform and permits elimination of absorption by ions of energy from more than one supplemental frequency component at any one time.

Abstract: An on-chip digital servo scheme for providing continuous calibration of integrated circuit on-chip time delay devices to provide real-time regulation against various parameter or environmental changes, such as processing, temperature and power supply variations. The techniques are particularly useful for semiconductor delay lines comprised of a selectable number of identical unit delay circuits having the same propagation time. This scheme constantly monitors the delay changes in the unit delay elements and calibrates the delay line by comparing the delay against a stable, crystal controlled reference clock period to determine, in each instance, how many unit delay elements in the delay line is needed to effectively delay the amount of time to equal the reference clock period. A real time digital pointer number is generated and updated while the device is in operation.

Abstract: The use of three identical delay line circuits enables one of said delay circuits to be connected as a minimum delay reference and a second delay circuit to then be continuously compared to said minimum delay reference delay circuit to provide a code which calibrates the second delay line circuit by indicating and controlling continuously the length of the second delay line circuit to provide an exactly 360-degree phase shift of the reference signal under variable temperatures, pressures and voltages. Then, by maintaining the length of the third identical delay line at said determined 360-degree length, and by being able to select any tap output of the third identical delay line circuit responsive to a command, the third delay line circuit provides an adjustable, feedback calibrated, delay line circuit.

Abstract: A spark sampling microparticle generator device and method providing means to first ionize a gap and then to switch a stabilized and controllable current into and out of said ionized gap to provide extremely high, selectable current density in a sample material in said gap with very fast rise and fall times to ablate said material to form microparticles. A plurality of identical modular circuits containing high frequency power transistors are selectably switchably connected in parallel simultaneously to the gap to achieve current densities which are higher than achievable with a single transistor, thereby obtaining the benefits of the high frequency response without being limited by the current limitations of the available transistors.

Abstract: Apparatus and methods for modifying an incoming binary serial data stream to reduce the Duty Cycle Distortion jitter which involves comparing the time between adjacent transitions and correcting the jitter by inserting delay before the early transition for reducing the peak-to-peak distribution of said jitter.

Abstract: An improved FT NMR system capable of faster computations by eliminating the time required to operate a shift register for the scaling in signal averaging. The system employs a combinational circuit which provides the commanded various scaled outputs in 50-80 nanoseconds of a 16 bit data word.

Abstract: A magnetron sputter apparatus is disclosed which includes a rotatable generally heart-shaped, closed-loop magnet array behind the target and in front of a pair of separately driven stationary electromagnets. The apparatus is optimized to produce a sputtered film on a planar substrate having desired film characteristics such as uniformity of thickness, good step coverage, and good via filling and efficient utilization of the target. The shape of the generally heart-shaped array includes a flattened tip forming an arc of a circle centered on the axis of rotation and concave cusps in the lobes of the heart-shape. The electromagnets are used to increase target utilization at its center and to compensate for the change in shape of the target and distance from the target to the substrate with depletion.

Abstract: A method for using a QIT and for performing collisionally induced disassociation MS.sup.n experiments by scanning the trap potential sequentially so that the field first experiences a secular frequency of a selected parent ion and then the secular frequency of a CID produced daughter ion and then the secular frequency of a granddaughter ion and so on for each secular frequency of each progeny ion in descending mass order.

Abstract: A method for efficiently filling a QIT which isolates an ion range by employing a sequential part of supplemental broadband waveforms where the first such supplemental broadband waveform is applied during the period that the e-beam ionization bombardment takes place and the second such broadband waveform is applied after the e-beam bombardment ends.

Abstract: Method employing low pressure plasma having high electron density for rapid oxide etching employing hydrogen and argon and specific electron clyclotron resonance (ECR) operating parameters in an ECR having a non-oxygen contributing environment in the reaction chamber.

Abstract: A new method for accurately and sequentially growing monolayers and creating new superlattice structures employing a MBE thermal source control technique employing a quasi-double beam atomic absorption background correction measurements with the beam blocked and with the beam unblocked and by calculating the concentration based on the: ##EQU1## and applying corrections for non-linear absorption curves because of comparable spectral bandwidth of the molecular beam.

Abstract: A PPM coupled-cavity traveling wave tube has an RF structure comprising a re-entrant double-staggered ladder circuit. Several cavities are separated by iron pole pieces with penetrating slots to provide RF coupling between the cavities. Re-entrant copper bars are attached to both sides of the pole pieces that define the boundaries between adjacent pairs of cavities. These bars extend diametrically across the cavity interior around beam drift tubes The re-entrant bars on adjacent pole pieces are rotated relative to each other by 90 degrees about the beam axis. The bars are hollow along their length, and thereby provide channels for coolant flow around the drift tubes. These channels communicate through apertures with coolant distribution channels in the outer cavity walls extending along the length of the traveling-wave tube.

Abstract: Implantation apparatus for cold cathode plasma immersion ion implantation (C.sup.2 PI.sup.3) without a continuous plasma using very short high voltage, low duty cycle ionization pulses, in conjunction with a synchronously produced electron flow to neutralize positively charged wafer surfaces.

Abstract: A method and means for accurately regulating the rate of flow of supply gas to the burner or torch of a spectrometer. The flow rate is controlled by a valve having a closure member which is movable between a position at which it provides maximum obstruction to gas flow, and a position at which it provides minimum such obstruction. The closure member movement is controlled by a pulsed electrical signal so that the closure member moves rapidly and repeatedly between each of the two positions. Gas flow rate through the valve is therefore dependent upon the aggregate of the times the closure member spends in either of the two positions referred to, and that flow rate is changed by varying the frequency and/or pulse duration of the pulsed signal.

Abstract: Methods and apparatus for using a veneer type lathe of compact design for the pellitizing of a log portion directly from the log without intermediate steps. A log saddle with slide guides for the axles of the incisor rolls enables a significant reduction in the complexity of a peripheral drive veneer lathe and permits the use of a single press to clamp, incise and separate the pellets from the log.

Abstract: An 8B/10B encoder which provides an output of one of a pair of opposite disparity non-complementary 8B/10B command code outputs responsive to RD and selected command inputs.