Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7358877 | Obsolescence mitigation for electron bombarded semiconductor tubes in programmable waveform digitizers Method for replacing Electron Bombarded Semiconductor (EBS) tubes in a waveform digitizer having an analog input interface and a digital output interface, the EBS tubes being interposed between the analog input interface and the digital output interface, in which th... | 04/15/2008 |
| 6980142 | Electron beam excited superconducting analog-to-digital converter A system and method for converting an analog voltage signal to a digital representation at high speeds, known as an analog to digital converter (A/D converter), is provided in the form of an N-bit A/D converter, made by N superconducting, preferably HTC, transmissio... | 12/27/2005 |
| 6890060 | Recording head driving method, recording head, ink-jet printer An ink jet printer has a line head having heating elements (121d) for ejecting ink droplets from nozzles, in which the plurality of heating elements (121d) are arrayed in a direction substantially perpendicular to the paper feed direction... | 05/10/2005 |
| 6617987 | Electron beam excited superconducting analog-to-digital converter A system and method for converting an analog voltage signal to a digital representation at high speeds, known as an analog to digital converter (A/D converter), is provided in the form of an N-bit A/D converter, made by N superconducting, preferably HTC, ... | 09/09/2003 |
| 6542088 | Multiturn rotary encoder with multiple code carriers coupled by a reduction gear A multi-turn rotary encoder that includes a first code carrier connected with an input shaft, a scanning device that scans the first code carrier and generates an absolute position of the input shaft within one revolution, and a digital code word is prese... | 04/01/2003 |
| 5211564 | Computerized figural response testing system and method A method and system for interactive test taking is provided, having a computer with memory, an image display screen, and a pointing device such as a mouse for examinee manipulation of symbols or objects on the screen. Starting figural material is presente... | 05/18/1993 |
| 4975697 | Measuring arrangement In a measuring arrangement for the spacing between a marking (32) on a displaceable marking carrier (30) and a reference line, to produce a high degree of resolution and a low scanning frequency, at least two electrodes (17, 18) defining a measuring gap (... | 12/04/1990 |
| 4811016 | Clamping circuit for an analog to digital converter A clamping circuit clamps a threshold of an analog to digital converter (ADC) to a signal level just below the black level of a television signal. During the blanking period, a negative-going peak is superimposed on the input signal to produce the waveform. Ea... | 03/07/1989 |
| 4691191 | Device for signal processing and target plate for such a device In an analogue-to-digital converter based on the principle of deflection of an electron beam striking a target plate, the number of diodes in the target plate is doubled. The target plate is covered with a metal pattern in a manner so that a complementary... | 09/01/1987 |
| 4642423 | Touch control system for use with or having a three-dimensionally curved touch surface Apparatus for use in a touch control system for a cathode ray tube, display panel or other touch-controlled device which is capable of recognizing touch positions along a predetermined coordinate axis on a curved touch surface comprises a substrate compri... | 02/10/1987 |
| 4628408 | Input device An input device for use in a display unit such as a CRT includes a lower electrode of an electrically conductive material and having a plurality of apertures therein, a resilient insulating base superimposed on the lower electrode and having a plurality o... | 12/09/1986 |
| 4621257 | Video display touch detection digitizer A video display touch detection digitizer for generating the coordinate position when the video display is touched. The light signals for the X and Y coordinate array are generated from the raster scan signals of the video display during selected periods ... | 11/04/1986 |
| 4227187 | High speed real time quantizer and analog/digital converter A system for performing real time quantization and analog/digital conversion of an analog waveform operating with analog input signals over one gigahertz bandwidth is realized by utilizing a CRT type device in which the electron beam is deflected by the a... | 10/07/1980 |
| 4213124 | System for digitally transmitting and displaying texts on television screen In the disclosed teletext system, the transmitter station broadcasts data cks data from several channels, the data packs being time multiplexed. Each data pack comprises a prefix signal for causing a teletext receiver either to accept the data packs of a ... | 07/15/1980 |
| 4161725 | Analog-Fibonacci p-code converter An analog-Fibonacci p-code converter comprises a code readout device having a control input receiving a code readout pulse, as well as a device for realization of a Fibonacci p-code table having an input receiving an analog value being converted, the devi... | 07/17/1979 |
| 4034363 | Real time data rate quantizer and analog-to-digital converter system A real time data rate quantizer and analog-to-digital converter system employs an electron beam which is deflected by an analog input waveform. The deflected electron beam strikes a mosaic target in which electron beam sensitive elements detect and quanti... | 07/05/1977 |
| 4034362 | Device for automatic processing of signals recorded on an oscilloscope screen In a digital storage system for oscilloscope trace data, in order to obtain precisely the ordinate of an oscilloscope trace at the intersection of a scanning line therewith in a television camera image of the trace, a scan/trace intersection profile signa... | 07/05/1977 |
| 4005407 | Cathode ray tube digitizer A conventional CRT is modified to include a vertical column of electrodes bedded in the face of the CRT. A single valued function is displayed on the CRT and the vertical and horizontal gains are adjusted to produce the desired sweep on the face of the CR... | 01/25/1977 |
| 4005408 | Multiple electron beam analog to digital converter A typical embodiment of the invention is a multiple electron beam device converting analog input signals into coded digital output signals. A beam of electrons, generated through a Watkins-Johnson laminar flow sheet beam electron gun is focused before b... | 01/25/1977 |
