Abstract: A method of compensating for the temperature related frequency drift of an oscillator. The method comprises using an external reference frequency signal to derive oscillator compensation data over a range of operating temperatures, storing the oscillator compensation data in a first table, and, for a given operating temperature, using the first table to obtain corresponding oscillator compensation data and applying that data to provide compensation for the temperature related frequency drift. The method further comprises defining, for the range of operating temperatures, a series of temperature slots each sub-divided into a series of temperature bins.

Abstract: A package includes a base member and a first projecting portion that projects from one surface of the base member. The first projecting portion contacts a first substrate on which an electronic component is mounted, and has an insulating property.

Abstract: An oscillator includes a first package including a first base, and a first lid bonded to the first base, a first temperature controller housed in the first package, and mounted on the first base, a second temperature controller housed in the first package, and mounted on the first base, and a circuit element housed in the first package, mounted on the first base, and including at least a part of an oscillation circuit, the circuit element is disposed between the first temperature controller and the second temperature controller in a planar view.

Abstract: A device includes an acoustic resonance cavity through which fluid can flow and which can support an acoustic standing wave. The frequency of a supported wave varies with fluid temperature over an operating temperature range, thereby defining an operating frequency range. The device includes two acoustic transducers for generating and detecting the acoustic standing wave. Each transducer couples to an electric network including an inductive component and a capacitive component. The inductive and capacitive components and the connected transducer define a resonance behavior in which signals in a first part of the operating frequency range in which the transducer has a first sensitivity are amplified relative to signals in a second part of the operating frequency range in which the transducer has a higher second sensitivity. Amplitude variations through the resonance cavity, acoustic transducers and electric networks are less than amplitude variations through only the resonance cavity and acoustic transducers.

Abstract: Systems and processes disclosed herein determine the temperature of a crystal, such as a crystal that may be used in a crystal oscillator, using the reference crystal itself. The system can measure the temperature of the crystal without a temperature sensor. Further, a single oven technique may be used to maintain the temperature of the reference crystal. Thus, in certain embodiments, a more compact crystal oscillator can be generated compared to conventional techniques. Further, by measuring the reference crystal based on signals generated by the reference crystal itself, the system disclosed herein is more accurate than many previous crystal oscillator systems.

Abstract: A circuit device includes an A/D conversion section adapted to output temperature detection data, a temperature compensation section adapted to perform a temperature compensation process of the oscillation frequency based on the temperature detection data, and an oscillation signal generation circuit adapted to generate an oscillation signal using frequency control data from the temperature compensation section and a resonator. The frequency control data from the temperature compensation section is input to the oscillation signal generation circuit during a normal operation, and during a period other than the normal operation, data generated by a PLL circuit for comparing an input signal based on an output signal of the oscillation signal generation circuit and a reference signal with each other is input to the oscillation signal generation circuit.

Abstract: Systems and devices are provided for fully discharging leakage current generated during standby and/or power down modes regardless of variations in PVT conditions. An apparatus may include a power generation unit that powers components of the apparatus and a bleeder circuit. The bleeder circuit may include an operational amplifier. Further, the bleeder circuit may include leakage current generator circuitry that is coupled to the operational amplifier and generates a first current that mimics leakage current generated by the power generation unit. Furthermore, the bleeder circuit may include leakage current mirroring circuitry that is coupled to an output of the operational amplifier and that generates a second current that mirrors the first current. In addition, the bleeder circuit may also include leakage current bleeder circuitry that is coupled to the leakage current mirroring circuitry and that generates a third current that sinks the leakage current to ground.

Abstract: A method and apparatus for speeding up the start-up process of a crystal oscillator. The energy required for starting oscillations is inserted to the crystal by a stimulus in the form of a time-variant voltage or current pattern, either periodic or aperiodic. The stimulus is stopped after a pre-established period, then the oscillator continues to operate in its normal mode and completes the start-up process significantly faster, compared to a start-up process not comprising the above stimulus.

Abstract: Techniques are described for fast wakeup of a crystal oscillator circuit. Embodiments operate in context of a crystal oscillator coupled with a phase-locked loop (PLL). For example, prior to entering sleep mode, embodiments retain a previously obtained coarse code used to coarse-tune a voltage controlled oscillator of the PLL. On wakeup, the PLL is configured in a chirp mode, in which the retained coarse code and a sweep voltage are used to generate a chirp signal at, or close to, a target stimulating frequency for the crystal oscillator. The chirp signal can be used to inject energy into the crystal oscillator, thereby causing the crystal oscillator to move from sleep mode to steady state oscillation relatively quickly.

Abstract: A fast start-up oscillator circuit to reduce a start-up time of a crystal oscillator is presented. The circuit contains a crystal resonator to output a first oscillation signal and a tunable RC oscillator to output a second oscillation signal. A driver is coupled between the tunable RC oscillator and the crystal resonator The driver transfers the second oscillation signal output from the tunable RC oscillator to the crystal resonator. The driver drives the crystal resonator, and a feedback circuit connected between the crystal resonator and the tunable RC oscillator to align a phase of the tunable RC oscillator with a phase of the crystal resonator based on the oscillation signal output by the crystal resonator.

Abstract: A digitally controlled oscillator (DCO) may include a transformer, which may contain a secondary winding comprising a first port, a second port, and an array of capacitor units, wherein each capacitor unit includes a first NFET having a gate and a back gate connected to a control signal, and a drain connected to the first port; a second NFET having a gate connected to ground, a back gate connected to the control signal, and a drain connected to the source of the first NFET; and a third NFET having a gate and a back gate connected to the control signal, a drain connected to the source of the second NFET, and a source connected to the second port. The capacitor units may allow fine tuning of the DCO output frequency with a resolution of about 0.3 MHz and a range of about 80 MHz.

Abstract: Provided is a constant voltage output circuit having an output terminal and configured to supply power to a crystal oscillator circuit connected to the output terminal, the constant voltage output circuit, having: a bias current control circuit subjected to negative feedback control by an output voltage which is supplied from the output terminal. As a result, variation in the constant voltage output caused by variation in current from a constant current source is reduced.

Abstract: An oscillator includes an oscillation source, multiple temperature control elements, and a controller adapted to perform control to suppress an increase in current consumed in one or more of the temperature control elements during at least part of a period from when operation of the oscillation source initiates to when the oscillation source reaches a specified temperature.

Abstract: An oscillator includes a container, a first heater disposed in a first area of the container, a second heater disposed in a second area of the container that is different from the first area, a vibrator disposed between the first area and the second area when viewed in the direction perpendicular to a surface on which the first heater is disposed, and a layer that is disposed between the vibrator and the container with at least part of the layer overlapping with the first heater, the second heater, and the vibrator when viewed in the direction perpendicular to the surface on which the first heater is disposed, and the thermal conductivity of the layer is higher than the thermal conductivity of the first and second areas.

Abstract: Components associated with receiving user touch input, receiving user force input, and providing haptic output interface are integrated into a unified input/output interface that includes a transducer substrate formed with a monolithic or multi-layer body having a number of electrodes disposed on surfaces thereof. Electrodes are selected by a controller to provide touch input sensing, force input sensing, and haptic output.

Abstract: A temperature compensated oscillation controller includes a temperature compensation circuit configured to provide a reference voltage through a first terminal and to receive an input voltage including temperature information through a second terminal, and an oscillation circuit configured to be connected to an external crystal resonator through third and fourth terminals and to output a clock signal in response to an oscillation signal from the external crystal resonator. The temperature compensation circuit is configured to perform a voltage controlled oscillator-based sensing operation to convert the input voltage into a temperature code and to adjust a frequency of the clock signal using the temperature code.

Abstract: An oscillator includes a first package, an oscillation element housed in the first package, a first temperature controller housed in the first package, a second package adapted to house the first package, and a second temperature controller disposed outside the first package, and housed in the second package.

Abstract: A buffer circuit includes a first MOSFET including a first source electrode, a first gate electrode, and a first drain electrode, and a second MOSFET, which includes a second source electrode, a second gate electrode, and a second drain electrode, and is same in polarity as the first MOSFET, and the first gate electrode and the second gate electrode are electrically connected to each other.

Abstract: A quartz crystal device includes a quartz-crystal vibrating piece, a container, and a pedestal. The container houses the quartz-crystal vibrating piece. The pedestal is located between the quartz-crystal vibrating piece and the container for connecting and fixing the quartz-crystal vibrating piece to the container. The pedestal is configured with a crystal. The pedestal is fixed to the container at three places of a first fixation point, a second fixation point, and a third fixation point in a plan view. The first fixation point, the second fixation point, and the third fixation point are configured so as to become positions where an inner center, an outer center, or a gravity center of a triangle formed by connection of the first, second and third fixation points and a gravity center of the pedestal match.

Abstract: A circuit device includes an A/D conversion circuit that performs A/D conversion on a temperature detection voltage from a temperature sensor so as to output temperature detection data, and a digital signal processing circuit that performs a temperature compensation process on the basis of the temperature detection data, in which the A/D conversion circuit operates in a first mode, and switches to a second mode in a case where a predetermined condition is established.

Abstract: In an OCXO, which outputs an oscillation frequency by oscillating a crystal resonator, a correspondence relationship between an oscillation frequency and an elapsed time at a beginning after a start of oscillation of a first crystal resonator is acquired. Based on the acquired result, data after the beginning and corresponding to a correspondence relationship between an accumulated elapsed time of the oscillation and the oscillation frequency after the start of the oscillation is obtained. Based on the accumulated elapsed time of the oscillation and this data, a frequency setting value is corrected. While an output frequency of the first crystal resonator fluctuates in association with the elapsed time, the output frequency is corrected by the frequency correction value corresponding to the accumulated elapsed time, thereby stabilizing the oscillation frequency.

Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 25.93?W/T?27.07, where W is a length of a short side and T is a thickness.

Abstract: An apparatus is provided which comprises: an oscillator circuit to generate a clock signal and transmit the clock signal over a signal line; a ground reference plane associated with the signal line; and one or more patterns formed in the ground reference plane, wherein the one or more patterns in the ground reference plane is to filter out noise from the clock signal transmitted over the signal line.

Abstract: Providing an OCXO having a highly stabilized output frequency. In an oscillator, which is an OCXO, crystal resonators, oscillator circuits, a temperature detector, and a heater circuit are disposed inside a first container, which is supported in a state of floating inside a second container, while a voltage stabilizer circuit for stabilizing a supply voltage supplied to the heater circuit is disposed apart from the first container inside the second container. Therefore, the supply voltage supplied to the heater circuit is stabilized. The voltage stabilizer circuit is less likely to be affected by heat generation of the heater circuit, thus obtaining a stable oscillation frequency output regardless of the environmental temperature.

Abstract: An oscillator includes a package having a first side, a second side, a third side, and a fourth side, a resonator and an oscillation circuit disposed in the package, an output terminal arranged along the first side of the package, and outputting a clock signal generated by the oscillation circuit, and a control terminal arranged along the second side of the package, and supplied with a digital control signal adapted to update an operation state of the oscillation circuit.

Abstract: The invention relates to a control module (13) for an electric appliance (10), comprising a printed circuit board (19) whereon electrical and electronic components (26) are mounted along with at least one power transistor (18) fixed to a first region (20) of the printed circuit board (19) and comprising a drain (D) connected to a first electrically conductive track (22) of said first region (20) and a source (S) connected to a second electroconductive track (23) of a second region (21) of the printed circuit board (19). At least one opening (27) forms a material discontinuity between the first and second regions (20, 21) of the printed circuit board (19), said opening (27) being arranged between the first and second conductive tracks (22, 23).

Abstract: An elastic wave resonator including a piezoelectric substrate and an IDT electrode, the IDT electrode includes a first electrode finger and a second electrode finger arranged next to the first electrode finger; when W1 is the width of the first electrode finger, W2 is the width of the second electrode finger, and L is a pitch or an electrode finger center distance between the first electrode finger and the second electrode finger; a metallization ratio (W1/L) of the first electrode finger is smaller than a metallization ratio (W2/L) of the second electrode finger; a sum (W1/L+W2/L) of the metallization ratio of the first electrode finger and the metallization ratio of the second electrode finger is between about 0.65 and about 1.00 inclusive, and a ratio (W2/W1) between a width of the first electrode finger and a width of the second electrode finger is between about 1.12 and about 2.33 inclusive, or W1/L+W2/L is larger than about 1.00, and W2/W1 is between about 1.40 and about 2.34 inclusive.

Abstract: A circuit device includes a processor adapted to perform a signal processing of temperature compensation of an oscillation frequency based on temperature detection data from an external temperature sensor disposed outside the circuit device to output frequency control data, and an oscillation signal generation circuit adapted to generate an oscillation signal with the oscillation frequency corresponding to the frequency control data using the frequency control data and a resonator disposed in a thermostatic oven.

Abstract: A piezoelectric vibrator element includes a piezoelectric substrate including a vibrating part and a fixation part, a first excitation electrode including a first foundation electrode layer disposed on a first surface of the vibrating part, and a first upper electrode layer disposed on the first foundation electrode layer, and a second excitation electrode including a second foundation electrode layer disposed on a second surface of the vibrating part, opposed to the first surface, and a second upper electrode layer disposed on the second foundation electrode layer, wherein a ratio tA2/T1 between a thickness tA2 of the second upper electrode layer and a thickness T1 of the vibrating part is not lower than 1.4% and not higher than 2.4%.

Abstract: An oven controlled crystal oscillator includes a crystal oscillator, a temperature control circuit, and a control integrated circuit. The crystal oscillator includes a crystal resonator and an oscillator circuit. The temperature control circuit includes a heater resistor, a thermistor, a first resistor, a second resistor, a third resistor, a differential amplifier, a thermosensor, and a fourth resistor. The thermosensor is disposed in parallel to the first resistor. The thermosensor has one end to which the supply voltage is supplied. The fourth resistor has one end connected to another end of the thermosensor and another end that is grounded. The control integrated circuit includes a digital variable resistor and a controller. The digital variable resistor is connected to the thermosensor in parallel. The controller adjusts a resistance value of the digital variable resistor based on a digital control signal input from outside.

Abstract: A device cover for temperature control of a component device includes at least one heating element enclosed using the device cover, and multiple sections. Each section is located at a distinct location on the device cover and includes a reflection angle for the distinct location. The reflection angle is configured to reflect heat to the component device enclosed using the device cover, the heat originating from the at least one heating element.

Abstract: An oven controlled crystal oscillator that ensures reduced heat influence from outside to further stabilize an output frequency is provided. The oven controlled crystal oscillator includes a substrate secured above a base. The oven controlled crystal oscillator includes an oscillator circuit, a heater resistor, and a power transistor, which are mounted on the substrate. The oven controlled crystal oscillator includes pins that secures the substrate above the base at a predetermined interval, a metal cover that covers the oscillator circuit, the heater resistor, and the power transistor, and a resin cover that covers outside of the metal cover. An air layer is formed between the metal cover and the resin cover.

Abstract: Embodiments of the present disclosure provide self-calibrated thermal sensors of an integrated circuit (IC) die and associated techniques and configurations. In one embodiment, a self-calibrating thermal sensing device includes a resonator configured to oscillate at a frequency corresponding with a temperature of circuitry of an integrated circuit (IC) die, wherein the resonator is thermally coupled with the circuitry and configured to operate in a first mode and a second mode and logic operatively coupled with the resonator, and configured to calculate a first temperature corresponding with a first frequency of the resonator in the first mode using a first equation, calculate a second temperature corresponding with a second frequency of the resonator in the second mode using a second equation, and add an offset to the first equation and the second equation based on a result of a comparison of the first temperature and the second temperature. Other embodiments may be described and/or claimed.

Abstract: A semiconductor device includes a first signal generator configured to generate a plurality of first signals and a second signal generator configured to generate a plurality of second signals. One of the plurality of first signals varies in one of a plurality of temperature sections. One of the plurality of second signals is substantially constant in one of the plurality of temperature sections.

Abstract: Provided is an oscillation apparatus and an oscillation control apparatus including a first control section that generates a first control signal that controls an oscillation frequency of an oscillator, based on a temperature detection result of a temperature detecting section; an encoder that generates a feedback signal; a second control section that generates a second control signal that controls the oscillation frequency of the oscillator, based on the temperature detection result of the temperature detecting section, an external input signal input from outside, and the feedback signal; an oscillation circuit that sets the oscillation frequency of the oscillator, based on the first control signal and the second control signal; and a reference voltage generating section that generates a reference voltage, wherein the encoder generates the feedback signal by comparing the second control signal and the reference voltage.

Abstract: A method of calibrating a first oscillator (102) is disclosed. A temperature is measured to obtain a measured temperature value and a determination is made of whether said measured temperature value differs from at least one previously measured temperature value by more than a threshold amount. If said measured temperature does differ from at least one previously measured temperature by more than said threshold amount, a reference oscillator (108, 110) is used to calibrate the first oscillator (102).

Abstract: An oscillator includes a resonator element; and a semiconductor device including an oscillation circuit which outputs an oscillation signal by oscillating the resonator element, a temperature compensation circuit which compensates for temperature characteristics of a frequency of the oscillation signal, and a first surface in which a terminal that is electrically connected to the resonator element is disposed. The semiconductor device overlaps the resonator element in a planar view. Frequency deviation of the oscillation signal, which is compensated for by the temperature compensation circuit, is greater than or equal to ?150 ppb and smaller than or equal to +150 ppb in a temperature range from ?5° C. to +85° C.

Abstract: This invention provides a mobile terminal and a network searching method for overcoming crystal aging issue. The method includes the step of: searching network by invoking parameters stored in a first area of a volatile RAM; if the searching is failed, searching network by invoking parameters stored in a second area of the volatile RAM; if the searching is failed and the number of network searches is larger than a first predetermined value, reacquiring parameters and searching network; if the searching is succeeded, updating the parameters in the first area with the reacquired parameters. By this method, the invention can effectively solve the problems caused by crystal aging or defective crystals, and increases the robustness of the network searching.

Abstract: A light-emitting device including a light-emitting element and causing the light emitting element to emit different light amounts. The light-emitting device includes: a measurement unit, a predetermined value storage unit, and a driving signal calculation unit. The measurement unit measures a surrounding temperature of the light-emitting element. The predetermined value storage unit stores a predetermined value of a driving signal for causing the light-emitting element to emit light. The driving signal calculation unit executes calculation of a value of the driving signal for causing the light-emitting element to emit a desired light amount by applying a correction factor in accordance with the measured surrounding temperature and the desired light amount to the predetermined value of the driving signal.

Abstract: An oscillator includes a resonator; an oscillation circuit which oscillates the resonator; a D/A conversion circuit which receives digital data for controlling a frequency of the oscillation circuit; a first temperature sensor; and a temperature compensation circuit which is connected to the first temperature sensor. The oscillation circuit includes a first variable capacitor element and a second variable capacitor element. An output voltage of the D/A conversion circuit is applied to the first variable capacitor element. An output voltage of the temperature compensation circuit is applied to the second variable capacitor element.

Abstract: A method and circuitry for generating a trigger signal based on an oscillation signal and associated non-transitory computer program product are provided. The method includes following steps. Firstly, a calibration value is obtained according to a reference frequency and a frequency of the oscillation signal, and a counting value is gradually altered from a first initial value to a breakpoint value. Secondly, the counting value is updated to a second initial value when the counting value is equal to the breakpoint value. Then, the counting value is gradually altered from the second initial value to a final value, and the trigger signal is generated when the counting value is equal to the final value.

Abstract: A crystal unit includes: a crystal substrate; and a pair of excitation electrodes formed respectively on both surfaces of the crystal substrate, wherein at least one of the pair of excitation electrodes has a pattern serving as both of an excitation electrode and a coil. An oscillator includes a package and a crystal unit accommodated in the package. The crystal unit includes a crystal substrate, and a pair of excitation electrodes formed respectively on both surfaces of the crystal substrate. At least one of the pair of excitation electrodes has a pattern serving as both of an excitation electrode and a coil. An oscillation circuit is accommodated in the package and electrically connected to the crystal unit.

Abstract: In a crystal resonator, a resonator element is installed in a package via a first bonding member and a second bonding member, and when viewed from above, a distance between a first bonding center and a second bonding center is set to be L1, and a length of a perpendicular line drawn to a virtual line which connects the first bonding center and the second bonding center from the resonation area center is set to be L2, a relationship expressed by 0<L1/L2?0.97 is satisfied.

Abstract: There are provided a printed circuit board and a manufacturing method thereof. The printed circuit board includes: a core layer having a cavity provided therein; an electronic component included in the cavity; a conductive partition disposed on a side of the cavity; and insulating layers disposed on and below the core layer.

Abstract: In described examples, an apparatus includes: a counter configured to receive a reference clock signal and having a next state input and a current state output; a multiplexer coupled to the next state input of the counter, configured to output one of an incremented next state value and a corrected next state count value responsive to a count correction select control signal; a seconds reference circuit coupled to the current state output of the counter, configured to output a seconds reference signal; an incrementer coupled to the current state output of the counter, configured to output the incremented next state value; and a calibration compensation circuit coupled to a compensate up down input signal and to the current state output of the counter, configured to output the corrected next state count value and the count correction select control signal.

Abstract: An apparatus and methods for tracking administering of medication by syringes is provided. The apparatus may include a plunger head for a syringe. The plunger head may include a transducer that sends and receives ultrasonic signals. The plunger may also include an antenna and a microcontroller that interfaces with the transducer and the antenna. The plunger may also include a power source that powers the microcontroller and the transducer. The transducer, the antenna, the microcontroller, and the power source may be at least partially encapsulated in an elastomer housing that fits within a barrel of the syringe. The microcontroller may be programmed with instructions to calculate data representative of the quantity of medication dispensed from the barrel and transmit the data to a remote device via the antenna.

Abstract: An apparatus and method for a temperature and calibration utilizing resonant frequency peaks in an oscillator. A circuit providing resonant peaks for utilization for temperature measurements comprising a resonator device for providing an oscillating source, a variable gain-bandwidth amplifier in parallel with the crystal/resonator for providing modulation of the gain and/or bandwidth driving the crystal/resonator, and control of resonant peaks for selection for oscillation, a first capacitor electrically coupled to the parallel combination of the input of the variable gain-bandwidth amplifier, and the resonator device for providing charge storage for oscillation, and a second capacitor electrically coupled to parallel combination of the output of the variable gain-bandwidth amplifier, and the resonator device for providing charge storage for oscillation.

Abstract: A structure of an integrated crystal oscillator package has a first quartz crystal resonator, a second quartz crystal resonator, and application-specific integrated circuit chip (ASIC) combined in a package. The ASIC has a switch control for receiving audio formats of 44.1 kHz and 48 kHz with different hi-fidelity (hi-fi). The first quartz crystal resonator has a first clock rate corresponding to the 44.1 kHz frequency and the second quartz crystal resonator has a second clock rate corresponding to the 48 kHz frequency to be switched by the present invention in operation.

Abstract: A cross-coupled complementary balanced voltage-controlled oscillator and a method for operating same. The oscillator comprises an electro-mechanical resonator, and an oscillator core. The oscillator core comprises capacitvely cross-coupled complementary inverters and a resistor network. The oscillator may comprise a frequency tuning network having inductors for increasing the tuning range. The capacitance inhibit the inverters from latching to a static direct current state. The resistor network forms a high pass filter with the capacitance to inhibit relaxation oscillations. The method comprises enabling the resistor network to form a high pass filter and starting balanced oscillations in the oscillator, the capacitance of the high pass filter for inhibiting latching, and the high pass filter for inhibiting relaxation oscillations. The method may comprise tuning the frequency by varying the capacitance of the oscillator.

Abstract: A wiring board of the present invention comprises an insulating base comprising a main face a side face; a cutout section having a quadrilateral shape opened in the main face and the side face; an electrode disposed on an inner face of the cutout section; and a wiring conductor disposed on one of an inner part and a surface of the insulating base, and connected to the electrode. A side wall of the cutout section comprises a protruding portion that curves and protrudes outward relative to the side face at a center region in a direction along the side face.