Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7733189 | Oscillator comprising foldover detection Control circuitry is disclosed including an oscillator operable to generate an oscillator signal. A frequency of the oscillator signal increases as an amplitude of a first voltage increases up to a threshold, and the frequency of the oscillator signal decreases as a... | 06/08/2010 |
| 7679460 | Crystal oscillator tester A crystal oscillator tester includes first and second test pins, first and second transistors, an indicator, a first diode, and first-third capacitors. The first test pin is connected to a power source. The collector of the first transistor is connected to the first... | 03/16/2010 |
| 7443253 | Detection device for detecting oscillator A detection device for detecting an oscillator is provided. The detection device includes an oscillator control circuit, a frequency-decreasing circuit and a display circuit. The oscillator control circuit is used for outputting the oscillator signal of the oscillat... | 10/28/2008 |
| 7355484 | Oscillator and radar apparatus using the same An oscillator and a radar apparatus that includes a resonator electro-magnetically connected to a micro strip line and a rotor connected to the resonator by capacitance. The bottom surface of the rotor has a changing height in the circumferential direction of the ro... | 04/08/2008 |
| 7310026 | Semiconductor integrated circuit with function to detect state of stable oscillation A semiconductor integrated circuit includes a reference-voltage circuit configured to produce a predetermined reference voltage at an output node thereof, a comparator, coupled to a node to which an oscillating signal is supplied and to the output node of the refere... | 12/18/2007 |
| 7302602 | Control unit A control unit having an oscillator for a processor is described, the control unit storing a temporary absence of oscillation of the oscillator in a first error memory, if oscillation begins again after the absence. ... | 11/27/2007 |
| 7298261 | Proximity sensor An operation section 2 is provided to a proximity sensor including: a detection section having an oscillation circuit 10; and an amplification section 2 having a function detecting a metal body using an oscillation amplitude of the oscillation c... | 11/20/2007 |
| 7117086 | GPS/IMU clock synchronization particularly for deep integration vector tracking loop A navigation system includes an inertial measurement unit, a navigation computer, a GPS receiver, and a clock controller. The inertial measurement unit has a first clock and a first switch, the navigation computer has a second clock and a second switch, and the GPS ... | 10/03/2006 |
| 7064617 | Method and apparatus for temperature compensation Temperature compensation is achieved by adjusting a divide ratio of a multi-modulus divider circuit in a feedback path of a phase-locked loop based on the detected temperature. The divide ratio is adjusted based on stored adjustment values stored in non-volatile mem... | 06/20/2006 |
| 7027796 | Method and apparatus for automatic fast locking power conserving synthesizer A frequency synthesizer device with a fast off-to-lock time to enable intermittent operation and achieve power savings through automatic control of its On/Off sequence. A relatively fast off-to-lock time is achieved by controlling the sequence of how various ... | 04/11/2006 |
| 6958951 | Adaptive Kalman Filter process for controlling an ensemble clock In an ensemble oscillator system including multiple free-running oscillators, a voltage controlled oscillator having a frequency responsive to a control signal, and a differencer unit that measures time differences between the oscillators, an adaptive Kalman Filter ... | 10/25/2005 |
| 6937187 | Method and apparatus for forming a dynamic model to locate position of a satellite receiver Method and apparatus for locating position of a satellite signal receiver is described. In one example, pseudoranges are obtained that estimate the range of a satellite signal receiver to a plurality of satellites. An absolute time and a position are computed using ... | 08/30/2005 |
| 6930559 | Oscillation state discrimination circuit and oscillation control circuit adapted to oscillation circuit An oscillation control circuit comprising a PLL circuit and a phase-locked state discrimination circuit is adapted to an oscillation circuit that performs oscillation to produce an oscillation signal (CKX) when supply voltage is applied thereto. The PLL circuit prod... | 08/16/2005 |
| 6711518 | Method for electronically aligning the frequency of an infrared transmitter A method is provided for aligning the center frequency of an infrared transmitter. The method comprises the steps of: (a) providing a voltage-controlled oscillator for driving the infrared transmitter, where the oscillator is adapted to receive a bias voltage from a... | 03/23/2004 |
| 6573799 | Clock system and corresponding method for providing a clock time accounting for systematic error Method for accounting for factors (such as temperature) causing systematic errors (time-varying or constant) in a clock, such as a clock used in a ranging receiver (for use with a positioning system such as the Global Positioning System), and a correspond... | 06/03/2003 |
| 6518848 | Oscillation stop detection circuit An oscillation stop detection circuit comprises delay means for delaying an oscillation signal having a predetermined cycle by a predetermined time to thereby output a delayed signal therefrom, detecting means for exclusive-ORing the oscillation signal an... | 02/11/2003 |
| 6075417 | Ring oscillator test structure An improved oscillator test structure is disclosed. A structure according to one embodiment includes an odd plurality of first transistor pairs formed on a predetermined area of a semiconductor substrate. The transistor pairs are electrically connected in... | 06/13/2000 |
| 5959451 | Metal detector with vibrating tactile indicator mounted within a compact housing A compact hand-held metal detector that detects small ferrous and non-ferrous metal objects, that has a detection pattern in three planes, and that includes a plurality of detection alarm indications including visual, audio, and tactile detection alarm in... | 09/28/1999 |
| 5856783 | Pump control system A pump control system which can distinguish between water and oil so that a pump can be controlled to pump water and deactivated before oil is pumped. Sensing is accomplished by a pair of capacitive sensors, one located above the other in a vessel in whic... | 01/05/1999 |
| 5751195 | Circuit to indicate phase lock in a multimode phase lock loop with anti-jamming security A lock detection circuit for a phase lock loop circuit having a phase lock loop circuit, generally a series circuit of a detector, a filter and a VCO with a PLL input terminal and an output terminal. A test circuit is coupled to the phase lock loop and in... | 05/12/1998 |
| 5689214 | Electromagnetic wave generator for influencing biomagnetic fields An electromagnetic wave generator for influencing different corporal states in a biological organism includes an oscillator circuit coupled to a microcontroller and an antenna coupled to the microcontroller through which waves at a given frequency are tra... | 11/18/1997 |
| 5625326 | Lock alarm circuit of a synthesizer A signal of a locking detector of a synthesizer indicates in a first state that a loop is locked, and in a second state that the loop is unlocked. The synthesizer may be temporarily deactivated by switching off the operating voltage of a voltage controlle... | 04/29/1997 |
| 5614872 | Semiconductor device having CR oscillation circuit and reset circuit In a semiconductor device having a CR oscillation circuit and a reset circuit, the semiconductor device includes a common terminal for constituting the CR oscillation circuit and the reset circuit. A voltage level at which the device falls into a reset st... | 03/25/1997 |
| 5585566 | Low-power shock detector for measuring intermittent shock events A shock detector for measuring intermittent shock events comprises a mechanical delay line to supply delayed output motion in response to input motion along an input axis. A transducer converts the delayed output motion to an electrical signal representat... | 12/17/1996 |
| 5463378 | Proximity detection system and oscillator, and method of using same A proximity detection system includes a dual mode oscillator for generating a pair of ON and OFF control signals. A sensing circuit including a capacitance device detects the presence of a conductive object, such as a liquid, to cause the oscillator to sw... | 10/31/1995 |
| 5369377 | Circuit for automatically detecting off-chip, crystal or on-chip, RC oscillator option A self-configurable clock circuit which automatically detects at power up whether an off-chip crystal oscillator is connected to an integrated circuit including the self-configurable clock circuit, and following such detection generates a system clock sig... | 11/29/1994 |
| 5367288 | Portable alarm device for detecting objects transgressing distance thresholds An alarm apparatus comprises an oscillator circuit (20) which provides an oscillating current to an antenna (A) from where a location (1) to be surveyed is irradiated with electromagnetic waves of in the RF frequency range provided by the oscillator circu... | 11/22/1994 |
| 5337022 | Harmonic lock detector An integrated circuit for detecting harmonic lock of a phase-locked loop includes a frequency synthesizer for receiving a reference clock signal and for generating an oscillator clock signal. A phase generator receives the oscillator clock signal and gene... | 08/09/1994 |
| 5332979 | Compact radio-frequency power-generator system An RF power-generator system for the frequency range of 2 to 30 MHz and a programmable sinusoidal power output of 0 to 1000 W. The system is constructed of modules (10, 30, 50, 70 and 90) accommodated in a shallow parallelepipedal housing (1) with a capac... | 07/26/1994 |
| 5319798 | Radio transceiver having PLL synthesizer A radio transceiver including a PLL synthesizer and is adaptable to a TDMA system in which the frequency of a radio frequency carrier is switched frequently at high speed. When an unlock alarm of the PLL synthesizer is used as one of the device alarms, th... | 06/07/1994 |
| 5289138 | Apparatus for synchronously selecting different oscillators as system clock source An apparatus is provided for synchronously selecting different oscillators as the system clock source. The apparatus is comprised of two oscillator selectors. Each of the oscillator selectors has as its inputs the output of each of the oscillators and a t... | 02/22/1994 |
| 5287086 | Proximity detection system and oscillator A proximity detection system includes a dual mode oscillator for generating a pair of ON and OFF control signals. A sensing circuit including a capacitance device detects the presence of a conductive object, such as a liquid, to cause the oscillator to sw... | 02/15/1994 |
| 5262989 | Circuit for sensing back-bias level in a semiconductor memory device A back-bias level sensor used for a semiconductor device wherein a sensing current for sensing a back-bias voltage is prevented from directly flowing into the substrate (or the back-bias voltage terminal). The gate of a PMOS transistor is provided with th... | 11/16/1993 |
| 5229752 | Method and apparatus for detecting timing errors in a system oscillator A method of detecting timing errors in a system oscillator for an electronic device, such as a power supply, includes the step of comparing a system oscillator signal with a delayed generated signal and generating a signal representative of the timing err... | 07/20/1993 |
| 5184001 | System for remote information interchange between a portable object and a station The station, in particular a terminal, comprises an oscillator (OS) having a feedback loop (1) and a station inductor element (L10) suitable for conferring a working frequency to the oscillator which varies relative to a rest frequency. The station also i... | 02/02/1993 |
| 5151666 | Oscillation stoppage detection circuit An oscillation stoppage detecting circuit has a boost circuit to which is inputted an output of an oscillation circuit and a level detection circuit to which is inputted an output of the boost circuit. The boost circuit used here is, for example, a voltag... | 09/29/1992 |
| 5099153 | Frequency-independent monitor circuit A clock monitor circuit which is frequency-independent. The crystal terminals on a circuit being monitored for activity may be considered as an inverter combined with a phase delay. The innovative circuit has clock-output and clock-input terminals which a... | 03/24/1992 |
| 5083013 | System for remote information interchange between a portable object and a station The station, in particular a terminal, comprises an oscillator (OS) having a feedback loop (1) and a station inductor element (L10) suitable for conferring a working frequency to the oscillator which varies relative to a rest frequency. The station also i... | 01/21/1992 |
| 4860321 | Lock detector for feedback loops A receiver is disclosed for acquiring and tracking a data signal in a highly stressed environment. The receiver comprises first and second I.F. sections, a mixer for translation from the first I.F. frequency to the second I.F. frequency, a 2 kHz bandpass ... | 08/22/1989 |
| 4816776 | Integrated circuit configuration and method for monitoring a co-integrated oscillator An integrated circuit configuration and a method monitor an integrated oscillator in the circuit. The oscillator has a minimum frequency and furnishes a synchronously controlling clock rate for the functioning of the integrated circuit when excited by an ... | 03/28/1989 |
