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"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 7641179 | Tamper-resistant fencing The security of an ordinary fence can be improved by using intersecting inserts that extend between posts of the fence. The inserts can be inserted in channels that are formed by the woven wire of the fence fabric. Intersections of the inserts can be used to securel... | 01/05/2010 |
| 7184798 | Power conservation system and method A power management circuit is arranged to apply power to and remove power from its own oscillator to conserve power. A power-on reset circuit provides a power-on-reset signal to a state machine. The state machine contains states that are programmed with information ... | 02/27/2007 |
| 7148757 | Charge pump-based PLL having dynamic loop gain A charge pump-based PLL dynamically controls loop gain in response to the frequency of an input signal. The loop gain is dynamically adjusted by varying the bias current of the charge pump circuit of the PLL. The bias current is varied in response to the voltage of ... | 12/12/2006 |
| 7149728 | Recursive file backup Methods and systems are provided for recursively backing up modified data files where only modified data files are backed up and that provide a user with an efficient way to determine which original files have been modified to allow the user to readily locate origin... | 12/12/2006 |
| 7100203 | Operating session reauthorization in a user-operated device An authorization-update process for use in a user-operated device re-authorizes an operating session after a rapid idle timeout using the authorization-update process, which has fewer steps than a normal authorization process. The re-authorization process can requir... | 08/29/2006 |
| 7096462 | System and method for using data address sequences of a program in a software development tool Rapid determination of placement for code and data for optimal access of the code and data during execution of software applications. An application that is to be efficiently arranged in a software carrier medium is instrumented such that the status of whether a par... | 08/22/2006 |
| 7088348 | Ergonomic pointing device An ergonomic pointing device receives commands from a user for controlling an electronic device. The ergonomic pointing device generally comprises a shaft, a roller, and a frame. The shaft comprises a ground spring contact and two direction-sensing spring contacts. ... | 08/08/2006 |
| 7082376 | State full test method executor A test method executor is an object designed to execute a test method. The test method executor typically implements a simple state engine that is used to process the data presented by each smart test attribute. The test method executor invokes particular test metho... | 07/25/2006 |
| 7081901 | Display system with framestore and stochastic dithering A display system provides stochastic dithering to image data for storage in a frame buffer for display. Dithering is used to reduce the size of the frame buffer and to reduce the complexity of the drive circuitry that is used to display an image. The bit depth of th... | 07/25/2006 |
| 7064492 | Automatic ambient light compensation for display backlighting Control circuitry is used to control the backlighting of electronic displays. A light sensor (such as a phototransistor) is used to continuously measure ambient light conditions that are associated with an electronic display. A linear, continuous light-level signal ... | 06/20/2006 |
| 7042518 | Digitally controlled variable frequency HF emphasis circuit for use in video displays A sharpness filter processes a video signal that is to be displayed in a windowed environment. The windowed environment may contain windows that for displaying television images derived from video standards such as NTSC, PAL, and SECAM. Displaying windowed televisio... | 05/09/2006 |
| 7039908 | Unification-based points-to-analysis using multilevel typing Location types in unification-based, flow-insensitive “points-to” analyses represent three kinds of sets of abstract memory locations in a three-level subtyping system. The data constructor for “middle” and “upper” kinds of location types has a reader an... | 05/02/2006 |
| 7010454 | Test services provider A test services provider is an object that is arranged to provide a standardized interface for calling test harness provided functionality. The test services provider is not tied to a specific test harness, and provides a standard interface such that both test harne... | 03/07/2006 |
| 7006800 | Signal-to-noise ratio (SNR) estimator in wireless fading channels A signal-to-noise estimator is provided for estimating the signal-to-noise ratio in wireless fading channels. The estimator can be applied to likelihood ratio estimation of turbo decoders in third generation wide-band code division multiple access (WCDMA) systems. T... | 02/28/2006 |
| 6958591 | Battery charging safety circuit for simultaneous startup and rapid surge current clamping A safety circuit monitors a charging signal supplied by a charging circuit for charging a battery. Damage to the battery may occur when the voltage at the input terminal of the battery rises above the safe level for the battery. A voltage drop across a coupling circ... | 10/25/2005 |
| 6957216 | Method and apparatus for finding nearest logical record in a hash table A method, apparatus, software and data structure is disclosed for more efficient access times for linear operations in a hash table, including finding the nearest logical record. A plurality of actual data records and a plurality of marker data records are inserted ... | 10/18/2005 |
| 6917249 | RC oscillator An oscillator has timing characteristics that are determined by resistor and capacitor values. The circuit comprises an astable multivibrator and a current reference. The multivibrator comprises a first and a second timing capacitor. The multivibrator is configured ... | 07/12/2005 |
| 6900669 | Area efficient on-chip timeout generator with low temperature and low supply voltage dependency An area-efficient fully integrated BiCMOS analog time delay circuit with low-power supply requirements provides delays as long as two milliseconds. An ultralow PTAT current source comprises medium-value resistors to discharge an on-chip capacitor from a fixed zero-t... | 05/31/2005 |
| 6837633 | Stroke-based input of characters from an arbitrary character set A method and apparatus for assigning a relatively large character set to a small keyboard. The apparatus includes a keyboard having a plurality of keys in a rectangular array. Each key is assigned to a stroke similar to handwriting strokes. A virtual keyboard is des... | 01/04/2005 |
| 6816351 | Thermal shutdown circuit A circuit is arranged to provide a thermal shutdown signal in response to an overtemperature condition. The thermal shutdown circuit is typically implemented in the same die as the circuitry that is to be protected. The thermal shutdown circuit provides a first curr... | 11/09/2004 |
| 6812683 | Regulation of the drain-source voltage of the current-source in a thermal voltage (VPTAT) generator A drain-source voltage regulator in a VPTAT generator operates with a lower minimum Vdd and provides a regulated current-mirror voltage. The minimum Vdd can be expressed as Vdd_min=Vdsat_cs+Vdsat_amp+VGS_pmir. Regulation of the current-mirror voltage is achieved by ... | 11/02/2004 |
| 6808307 | Time-interleaved sampling of voltages for improving accuracy of temperature remote sensors A method and apparatus improves the accuracy of temperature measurements by sampling measurements from a remote sensor, where currents of different current densities are applied to the remote sensor in a time-interleaved fashion. The remote sensor includes at least ... | 10/26/2004 |
| 6778938 | Fan speed detection in the presence of PWM speed control A circuit is arranged to pulse-width modulate the duty cycle of a power supply signal that is used to control the rotational speed of a fan in a temperature-controlled system. The control system includes an edge detector for monitoring a tachometer signal that is pr... | 08/17/2004 |
| 6778009 | High gain and wide bandwidth switched capacitor amplifier having a dynamically loaded amplifier output A switched capacitor amplifier provides high gain and wide bandwidth using dynamic loading. Dynamic loading is used to reduce the capacitive load during a high gain phase (e.g., during a sampling phase) and to increase the capacitive loading during a high feedback f... | 08/17/2004 |
| 6774676 | Dual threshold buffer with hysteresis The present invention is directed to a buffer having dual thresholds. The buffer has an input terminal and an output terminal and comprises a current source, first through fourth transistors, a current mirror, and an output driver. The buffer uses an “analog” to... | 08/10/2004 |
| 6768290 | Soft start battery charging safety circuit A circuit limits a current that is initially discharged from a battery through a battery protection circuit. The current may be discharged through safety circuitry that monitors voltage slew rates and/or voltage levels. The safety circuitry may shunt current to a vo... | 07/27/2004 |
| 6768355 | Transient rejecting circuit A transient rejecting system for protecting the state of a memory is described. The transient rejecting system includes a signal transfer circuit and a charge storage circuit coupled to at least one pin of a circuit. The signal transfer circuit receives a supply sig... | 07/27/2004 |
| 6768374 | Programmable gain amplifier with single stage switched capacitor circuit using bandwidth balancing A single stage switched capacitor programmable gain amplifier uses programmable capacitor values to adjust gain factors. The operation of the amplifier is described by a transfer function having two gain factors: (C1/C2) and (C2/C3). The ... | 07/27/2004 |
| 6757592 | Nonlinear fan control A circuit is arranged to limit the rate of change in fan speed control signals. The control system includes a controller that produces a nonlinear (or piecewise linear approximation of a nonlinear function) fan speed control signal. The nonlinear fan speed control s... | 06/29/2004 |
| 6737824 | Fan acceleration control A circuit is arranged control the acceleration of a fan by limiting the rate of change in fan speed control signals. The control system includes an acceleration controller that low pass filters a target fan speed control signal. The low pass filtering signal minimiz... | 05/18/2004 |
| 6734652 | Battery charging safety circuit A safety circuit monitors a charging signal supplied by a charging circuit for charging a battery. Damage to the battery may occur when the voltage at the input terminal of the battery rises above the safe level for the battery. A voltage drop across a coupling circ... | 05/11/2004 |
| 6724593 | Reverse charger protection A method and apparatus is provided for protecting voltage regulation circuits and battery cells (“cell”) when a cell is reverse-coupled to a charger. When a charger is reverse-coupled to the cell, parasitic devices in voltage regulation circuits become forward-b... | 04/20/2004 |
| 6710660 | Class B power buffer with rail to rail output swing and small deadband A circuit is arranged as a class B amplifier with a rail-to-rail output swing and a small deadband. The circuit has two parallel input stages that each use an amplifier configured as a unity gain voltage follower. The output of each stage drives a high current outpu... | 03/23/2004 |
| 6699522 | Inorganic insulation coating material An inorganic coating material maintains the properties of high heat resistance and high electrical insulating characteristics of inorganic materials, while enhancing the degree of adhesion with respect to an object to be coated. A water-based suspension w... | 03/02/2004 |
| 6661500 | Integrated range finder and imager An image sensor is disclosed that contains pixel cells that can individually provide a real-time output signal that is proportional to the instantaneous magnitude of incident radiation upon each pixel cell. The individual real-time output signals can be u... | 12/09/2003 |
| 6661283 | Wide gain range and fine gain step programmable gain amplifier with single stage switched capacitor circuit The present invention is directed towards a single stage switched capacitor programmable gain amplifier. The operation of the amplifier is described by a transfer function having two gain factors: (C1/C2) and (C2/C3). The transfer function is equal to the... | 12/09/2003 |
| 6650176 | N-well resistor leakage cancellation A circuit is used to cancel the effects of leakage in resistive circuits. A resistive circuit is used to generate a reference signal. The resistive circuit is subject to leakage at high temperatures. A matching leakage generator is selected to have leakag... | 11/18/2003 |
| 6637934 | Constant offset buffer for reducing sampling time in a semiconductor temperature sensor A data acquisition system for sampling a temperature signal from a temperature sensor includes: a programmable current source, a buffer with a constant offset, and an analog-to-digital converter (ADC). The programmable current source selectively provides ... | 10/28/2003 |
| 6614306 | Bias circuit for class AB high frequency amplifiers A high-speed cascode amplifier includes a cascode input stage. The cascode input stage sinks a cascode current in proportion to an input signal. The cascode current is sourced through two conduction paths. A first conduction path corresponds to the operat... | 09/02/2003 |
| 6529217 | System and method for graphically displaying a set of data fields A method for graphically displaying a set of data fields includes creating a graphical display of a set of data fields through the use of icons and drop areas. To graphically display the data fields, a user first selects a range of data points, grouped in... | 03/04/2003 |
