Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7405595 | High-side transistor driver having positive feedback for improving speed and power saving A high-side transistor driver including a driver circuit for generating a driving signal to drive a high-side transistor is provided. A floating supply terminal provides a supply voltage to the driver circuit. A floating ground terminal is connected to a source of t... | 07/29/2008 |
| 7397284 | Bootstrapped circuit A bootstrapping circuit capable of sampling input signals beyond a supply voltage is disclosed. In one embodiment, the bootstrapped circuit is implemented having a reduced area and/or power consumption requirement. ... | 07/08/2008 |
| 7394281 | Bi-directional universal serial bus booster circuit A bi-directional universal serial bus (“USB”) circuit for boosting a signal on a USB bus disclosed. The circuit includes a first stage inverting buffer coupled to a second stage inverting buffer to form a non-inverting buffer circuit. A high pass filter is coupl... | 07/01/2008 |
| 7362146 | Large supply range differential line driver A differential transmission line driver with supplemental current sources that overcome switching anomalies and EMU issues when the logic state of the driver is switching. During a logic transition, a current source, that is directed to the output of the driver, may... | 04/22/2008 |
| 7282956 | High voltage switching circuit of nonvolatile memory device A high-voltage switching circuit comprises: a high-voltage switch configured to transfer a high voltage; a pumping circuit configured to boost signals of first, second, and third nodes by conducting pumping operations in response to a plurality of clock signals; and... | 10/16/2007 |
| 7274223 | Semiconductor device As devices are often different in the characteristics from one another, semiconductor chips based on the devices have discrepancies in the performance. A semiconductor device having a semiconductor switching element and a drive controlling means (1) for gener... | 09/25/2007 |
| 7271619 | Charge pump circuit reducing noise and charge error and PLL circuit using the same Operation noise and charge error of a charge pump circuit are reduced, thereby the jitter characteristics and the spectrum characteristics of a PLL circuit are improved, and further a time period elapsed until the PLL circuit is locked is shortened. The charge pump ... | 09/18/2007 |
| 7127597 | Mechanism for controlling boot decisions from a network policy directory based on client profile information A system and method for controlling boot options for a workstation on a computer network includes initiating a boot on a workstation in communication with the network, downloading an application to the workstation from a server in communication with the network, gat... | 10/24/2006 |
| 7106105 | High voltage integrated circuit driver with a high voltage PMOS bootstrap diode emulator A high voltage circuit driver includes high and low side driver cells to drive a high and a low side power MOSFET, a bootstrap circuit to energize the high side driver cell, a high voltage PMOS transistor (HVPMOS) between a voltage source and the bootstrap circuit, ... | 09/12/2006 |
| 7046040 | Bootstrap driver A bootstrap driver comprises an output stage having an N-type high-side transistor and a low-side transistor, also of the N-type, which are arranged in series between a positive supply terminal and a negative supply terminal. A control circuit of the high-side trans... | 05/16/2006 |
| 6977528 | Event driven dynamic logic for reducing power consumption Methods and circuits are described for reducing power consumption within digital logic circuits by blocking the passage of clock signal transitions to the logic circuits when the clock signal would not produce a desired change of state within the logic circuit, such... | 12/20/2005 |
| 6933796 | Voltage controlled oscillating circuit A voltage controlled oscillating circuit operable to output a variable frequency, includes a variable capacitance element with the variable frequency varying with a variation in capacitance of the variable capacitance element. The variable capacitance element is pro... | 08/23/2005 |
| 6774667 | Method and apparatus for a flexible chargepump scheme for field-programmable gate arrays A programmable gate array comprising: a plurality of logic modules, each logic module having at least one output coupled to an isolation transistor, each isolation transistor in each of the plurality of logic modules having a gate; and a charge pump having a pump-vo... | 08/10/2004 |
| 6710626 | Databus transmitter For a minimal electromagnetic radiation during transition between its states, a transmitter for a two-wire, differential databus on which a dominant state can be impressed by means of the transmitter in an active state of the transmitter, and which is in a recessive... | 03/23/2004 |
| 6577162 | Step-up circuit A step-up circuit is equipped with a plurality of serially connected rectification elements Q1, Q2, . . . between a first node and a second node, a plurality of capacitors C1, C2, . . . connected to connection points of the plurality of rectification elem... | 06/10/2003 |
| 6300797 | Semiconductor device, and liquid crystal device and electronic equipment using the same A semiconductor device capable of preventing malfunctions of instantaneous lighting, and comprises a drive circuit, a drive control circuit, and a power supply circuit. The power supply circuit has a boosting circuit which is provided with a first power s... | 10/09/2001 |
| 6246296 | Pulse width modulator (PWM) with high duty cycle using bootstrap capacitor A pulse width modulation (PWM) amplifier of the type including power transistors connected in totem-pole fashion and a bootstrap capacitor used to bias at least one of the power transistors into the conductive state. The improvement wherein the bootstrap ... | 06/12/2001 |
| 6154063 | Class AB emitter follower buffers Buffers having an output pull-up transistor controlled by the input signal, an output pull-down transistor and a pull-down transistor control circuit. A current source provides a current that is divided between the pull-up transistor and the pull-down tra... | 11/28/2000 |
| 6097220 | Method and circuit for recycling charge Briefly, in accordance with one embodiment of the invention, an integrated circuit includes: two transistors coupled together in the integrated circuit so that upon the application of complementary voltage signals, electrical charge is substantially evenl... | 08/01/2000 |
| 6002269 | TTL logic driver circuit A bootstrap logic driver circuit operable from a low voltage power supply includes first and second bipolar transistors coupled between positive and negative voltage supplies and having a collector load comprising a first diode structure. A further transi... | 12/14/1999 |
| 5945845 | Method and apparatus for enhanced booting and DC conditions A voltage elevation circuit supplying additional voltage for gate switching having an elevated power supply connected to a first node of a capacitor using a transistor. The elevated power supply and booting circuit providing additional voltage for gate sw... | 08/31/1999 |
| 5811991 | Logic circuit and semiconductor device using it A logic circuit comprises an output line, a first switch having an end connected to the output line and another end connected to a power source potential, a second switch having an end connected to the output line and another end connected to a ground pot... | 09/22/1998 |
| 5783948 | Method and apparatus for enhanced booting and DC conditions A voltage elevation circuit supplying additional voltage for gate switching having an elevated power supply connected to a first node of a capacitor using a transistor. The elevated power supply and booting circuit providing additional voltage for gate sw... | 07/21/1998 |
| 5574390 | Method and apparatus for enhanced booting and DC conditions A voltage elevation circuit supplying additional voltage for gate switching having an elevated power supply connected to a first node of a capacitor using a transistor. The elevated power supply and booting circuit providing additional voltage for gate sw... | 11/12/1996 |
| 5399928 | Negative voltage generator for flash EPROM design A circuit is provided for supplying a negative high voltage to an integrated circuit from a high positive voltage source VPP. The negative voltage is applied to a plurality of FLASH electrically erasable programmable read only memory (EPROM) ce... | 03/21/1995 |
| 5033068 | Charge transfer device In a charge transfer device, the threshold voltage of a drive MOS transistor in an output circuit is set to be largest among those of MOS transistors of the same conductivity type which are formed on a substrate. Even under a large reset pulse, the MOS tr... | 07/16/1991 |
| 5027013 | Method and apparatus for coupling an ECL output signal using a clamped capacitive bootstrap circuit A method and apparatus for providing ECL output signals to a capacitative load includes differential amplification of input signals with a first output of a differential amplifier connected for establishing a voltage level between voltage limits Vcc | 06/25/1991 |
| 4926065 | Method and apparatus for coupling an ECL output signal using a clamped capacitive bootstrap circuit A method and apparatus for providing ECL output signals to a capacitative load includes differential amplification of input signals with a first output of a differential amplifier connected for establishing a voltage level between voltage limits Vcc | 05/15/1990 |
| 4835420 | Method and apparatus for signal level conversion with clamped capacitive bootstrap A method and apparatus for converting input signals at one predetermined logic level to output signals at corresponding different logic levels includes differential amplification of input signals with a first output of a differential amplifier connected f... | 05/30/1989 |
| 4829197 | Driver circuit with boost and feedback portions for improving output risetime and reducing propagation delay A driver circuit for driving capacitive loads comprises a regenerative high side driver and a low side driver. A boost circuit responsive to an input signal turns the regenerative high side driver on hard producing a very fast output rise time. A feedback... | 05/09/1989 |
| 4794280 | Darlington bicmos driver circuit A driver circuit is provided which offers decreased input loading, increased output loading, and a high voltage output level corresponding to a logic-1. These results are achieved through the use of pull-up transistors and capacitive and resistive circuit... | 12/27/1988 |
| 4760282 | High-speed, bootstrap driver circuit A line driver circuit capable of operating at high speeds. The output transistor, an emitter connected to an output terminal, has a special feedback capacitor connected to its base. The feedback capacitor helps pull the output terminal high to increase th... | 07/26/1988 |
| 4684824 | Capacitive load driver circuit A capacitive load driver circuit which has good response time without cross-conduction includes a positive drive subcircuit for charging an output load in response to a first input logic signal, and a negative drive subcircuit for discharging the output l... | 08/04/1987 |
| 4491748 | High performance FET driver circuit An FET high performance driver circuit which is especially effective in an environment wherein both large input and output capacitive loads are present is described. The driver features a push-pull output circuit, a clocked load, and a switched transfer d... | 01/01/1985 |
| 4430586 | Switch with an MIS-FET operated as a source follower A switch includes an MIS-FET having a source and a control electrode defining a gate-source capacitance and being operated as a source follower for switching a given voltage, a first capacitor, a first auxiliary transistor and a second auxiliary transisto... | 02/07/1984 |
| 4417159 | Diode-transistor active pull up driver A driver circuit for a capacitively loaded line employs the charge storage capacitance of a diode for raising the base of a driver transistor above the circuit power supply voltage level so as to pull up the line to within a transistor base-emitter voltag... | 11/22/1983 |
| 4376252 | Bootstrapped driver circuit A driver circuit charges a capacitive load to a voltage substantially equal to the voltage or potential of the power supply of the circuit by first charging the capacitive load with current flowing through a drive transistor under the control of the power... | 03/08/1983 |
| 4191899 | Voltage variable integrated circuit capacitor and bootstrap driver circuit An integrated circuit junction capacitor is formed using conventional bipolar transistor technology. Voltage variable capacitance is provided by a reverse biased emitter-base junction and parasitic collector-base capacitance is isolated from the emitter-b... | 03/04/1980 |
| 4002931 | Integrated circuit bipolar bootstrap driver An integrated circuit bipolar bootstrap driver has an interface circuit means, a low logic level circuit means and a bootstrap, high logic level circuit means. The interface circuit means is coupled to the low logic level and high logic level circuit mean... | 01/11/1977 |
