Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7233179 | Output stage interface circuit for outputting digital data onto a data bus An output stage interface circuit (1) comprises a main bipolar transistor (Q1) coupling a data output terminal (5) to a first rail (2) to which the positive of the power supply voltage (VDD) is applied, and a substrate diffusio... | 06/19/2007 |
| 6958622 | Scan-mode indication technique for an integrated circuit An integrated circuit and method for indicating the integrated circuit to enter into a scan mode are disclosed. A designated signal, such as an analog supply signal, for an analog block of an integrated circuit is utilized for indicating entry of a digital block of ... | 10/25/2005 |
| 6815779 | Integrated circuit including protection against polarity inversion of the substrate potential An integrated circuit including a vertical power component having a terminal formed by a chip substrate of a first conductivity type, a control circuit thereof, the control circuit isolated from the substrate by an isolation region of a second conductivity type, and... | 11/09/2004 |
| 6738855 | Communication interface between a TTL microcontroller and a RS232 Device avoiding level translation A communication interface circuit transfers signals between a TTL microcontroller and a RS232 device while avoiding level translation. The interface circuit includes two switch elements. A first switch element is connected between the TTL receive terminal and the gr... | 05/18/2004 |
| 6014045 | Minimal headroom, minimal area multi-terminal current steering circuits Minimal headroom, minimal area, multi-terminal current steering circuits for steering a current from a current source to any one of a plurality of outputs. The steering circuit provides controls to individual steering transistors so as to turn on the sele... | 01/11/2000 |
| 5966041 | High swing interface output stage integrated circuit for interfacing a device with a data bus A high swing interface output stage integrated circuit for interfacing a data communications device with a data bus which may operate at voltage ranges outside the supply voltage of the interface circuit. An output terminal of the integrated circuit is co... | 10/12/1999 |
| 5832305 | Multiple stage analog bi-directional selector utilizing coupled pairs of bi-polar junction transistors connected to pull-up resistors A multi-stage analog bi-directional selector which has a low input impedance and cost. The multi-stage analog bi-directional selector includes a plurality of analog switches including first and second bi-polar transistors coupled together at first and sec... | 11/03/1998 |
| 5382837 | Switching circuit for semiconductor device A circuit for connecting a first circuit node to either a second or a third circuit node relative to the voltage potential on the third circuit node includes two bipolar transistors connected in series. The collectors of both transistors are connected to ... | 01/17/1995 |
| 4791628 | High-speed demultiplexer circuit A demultiplexer for demultiplexing a multiplexed input data signal into M output channels using M sequencer means clocked from an overlapping M phase system clock. The system clock operates at a frequency equal to the input data signal rate divided by M. ... | 12/13/1988 |
| 4613774 | Unitary multiplexer-decoder circuit A unitary multiplexer-decoder circuit integrated on a single semiconductor chip includes a first reference transistor, a plurality of first data input transistors, a second reference transistor, a plurality of second data input transistors, an emitter fol... | 09/23/1986 |
| 4532433 | Switching circuit which is self-biased in one mode of operation Each of a plurality of circuit paths between a common input terminal and respective output terminals includes a switching device which can be switched between a high and a low impedance state. When a device in one path is switched into its low impedance s... | 07/30/1985 |
| 4445048 | High speed ribbon cable bus A high speed bus structure is described which employs an ordinary flat ribbon cable. ECL receivers are coupled to conductor pairs of the cable through resistors which change the capacitive load of the ECL receivers to a resistive load. The receivers are c... | 04/24/1984 |
| 4378537 | High isolation multicoupling apparatus A multicoupler for coupling a single energy source to a plurality of utilization devices including an impedance transformer connected to the source and driving at least one active device such as a pair of series connected emitter followers, a plurality of... | 03/29/1983 |
| 4314233 | Four-wire speed independent arbiter switch for digital communication networks A speed independent selection switch designed for pipelined message transmission through digital communication networks. The selector routes a message from the input path to one of the two output paths selected by the first bit of the message, that bit th... | 02/02/1982 |
| 4281931 | Measuring apparatus comprising light optics utilizing cylindrical focusing glass fiber The present invention discloses herewith measuring apparatus for measuring the dimension of an object or the distance to said object, said measuring apparatus utilizing an optical characteristic of a focusing glass fiber, a line or a circle or a focus bei... | 08/04/1981 |
| 4181931 | Two-phase control system A two-phase control system for sequential switching of a.c. power. An a.c. nput is split into two phases. The two phases are switched simultaneously or independently by a plurality of switches in sequence. The output from the switches is recombined to prov... | 01/01/1980 |
| 4177432 | Multi output differential amplifier Disclosed is a differential amplifier having a pair of input terminals and multiple output terminals. Various ones of the output terminals are selectively enabled in response to output selection signals. Within the amplifier is a first transistorized circ... | 12/04/1979 |
| 4006307 | Impulse noise suppression circuit A circuit for reducing transmitted and radiated impulse noise which is generated by opening and closing connections between a transmission path and a source of potential. In the case of closing such a connection a path is connected to a substantially zero... | 02/01/1977 |
| 3961326 | Solid state digital to analog converter An integrated-circuit 12-bit digital-to-analog converter comprising binarily-scaled constant-current sources with associated switch cells employing bipolar transistors to direct the bit currents either to a summing bus or to ground. The switch cells inclu... | 06/01/1976 |
