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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 4308098 | Method of electrically converting an analog signal into a digital representation A method is described for electrically converting an analog signal into a digital representation in a manner that maximizes noise rejection. The digital representation is formed from a preselected number of discrete points corresponding to sampled approxi... | 12/29/1981 |
| 4305064 | High density analog-to-digital converter Combining integrated injection logic (I2 L) and linear circuitry permits fabrication of a highly dense analog-to-digital (A-to-D) converter. The heart of the A-to-D converter is a linear-I2 L plurality of high density variable curren... | 12/08/1981 |
| 4295123 | Analog-to-digital converter An analog to digital converter device is disclosed. The device includes a plurality of serially connected stages representing bits, each stage including generally a source of current or fluid and a second current or fluid source of opposite polarity, a cu... | 10/13/1981 |
| 4276543 | Monolithic triple diffusion analog to digital converter A parallel analog-to-digital converter having high speed and high resolution, fabricated on a single integrated-circuit chip in such a manner as to avoid problems typically associated with high speed parallel converters. The converter disclosed by way of ... | 06/30/1981 |
| 4275386 | Binary analog-digital converter An analog-digital converter supplying a digital output signal in natural or reflected binary code, having an input stage, n consecutive conversion stages comprising two parallel channels of identical structure, in each of which there are two current paths... | 06/23/1981 |
| 4270118 | Parallel analog-to-digital converter An analog signal is converted into an n bit digital signal by n comparator circuits which compare the analog input to 2n -1 reference inputs. Each comparator output alternates as the analog signal increases through the reference levels. Logic c... | 05/26/1981 |
| 4262282 | Indicator arrangement utilizing analog-digital converter An indicator arrangement includes comparators for parallel comparison of an analog input voltage with digitalizing standard voltages to digitalize the input voltage and an indicator for indicating digitalized output. The arrangement is provided with a con... | 04/14/1981 |
| 4229729 | Analog to digital converter utilizing a quantizer network A quantizer network is disclosed for decoding an analog signal and providing a four-bit digital output. The analog input signal is divided or quantized into sixteen discrete voltage ranges and applied to sixteen differential amplifiers. Each amplifier has... | 10/21/1980 |
| 4227183 | Analog to digital converting device In an analog to digital converting device having plural converting stages provided for converting an analog signal to a multi-bit digital signal, the lowest or just preceding converting stages, wherein analog signals to be converted are quantized by minut... | 10/07/1980 |
| 4225854 | High density analog-to-binary coded decimal converter The combination of integrated injection logic (I2 L) and linear circuitry permits fabrication of a highly dense analog-to-binary coded decimal (A-to-BCD) converter. The heart of the A-to-BCD converter is a linear-I2 L plurality of hi... | 09/30/1980 |
| 4220275 | Fastener selection system An automatic fastener selection apparatus for sensing the composite thickness of a plurality of workpieces, determining which one of a plurality fastener sizes is appropriate for joining the workpieces together, and generating a dispensing signal represen... | 09/02/1980 |
| 4217574 | Analog to digital converter having nonlinear amplitude transformation An analog to digital converter simultaneously digitizes a gamma corrected analog video signal and removes the gamma correction. The converter has a plurality of parallel analog comparators which compare the video signal amplitude with the amplitude of a p... | 08/12/1980 |
| 4194186 | Digital hysteresis circuit Noise induced hunting is eliminated in successive ranged digital/analog converter bias correction circuits by means of a digital hysteresis circuit. The digital hysteresis circuit comprehends a first up/down counter that counts to its extremums from a pre... | 03/18/1980 |
| 4189714 | Analog-to-digital circuit with adjustable sensitivity An analog-to-digital converter of the type using a plurality of voltage comparators, each, in response to an applied reference voltage and an analog voltage to be digitized, producing one of two logic signals depending on which of the applied voltages is ... | 02/19/1980 |
| 4183016 | Parallel analog-to-digital converter with increased resolution An analog-to-digital converter of the type including a sample-and-hold circuit for sampling an analog signal during predetermined cycles to produce periodically sampled voltages, a source of reference voltages for supplying plural quantizing voltages havi... | 01/08/1980 |
| 4180806 | Arrangement, in particular an analog-digital converter and method of operation thereof An arrangement, particularly an analog-digital converter having a resistance line or chain, and a plurality of voltage comparators, each preferably comprising an insulator-layer, field-transistor and a load element in the form of a resistance, capacitor o... | 12/25/1979 |
| 4131885 | Parallel-serial analog to digital converters In an analog to digital converter in which each sampled portion of an incoming video or other analog signal is converted to a digital character in a plurality of parallel conversions occurring serially; the range of the voltage level reference signals of ... | 12/26/1978 |
| 4122439 | Serial parallel type analog to digital converting device A serial parallel type A-D converting device having high accuracy and a simplified multi-stage configuration for correcting errors caused by d.c. drift or gain drift in a preceding stage, so as to obviate overloading in a succeeding stage, by means of off... | 10/24/1978 |
| 4110745 | Analog to digital converter An analog to digital converter used for converting such an analog signal having dc parts of a constant level periodically as a television picture signal, comprising a plurality of comparators comparing the analog signal with several reference voltage leve... | 08/29/1978 |
| 4091378 | Arrangement, in particular an analog-digital/digital-analog converter and method of operation thereof An arrangement, particularly an analog-digital/digital-analog converter having a resistance line or chain, and a plurality of voltage comparators, each preferably comprising an insulator-layer, field-transistor and a load element in the form of a resistan... | 05/23/1978 |
| 4086579 | Video digital display device with analog input An analog-to-digital converter includes a common input amplifying device such as a transistor in differential amplifier relationship with each of a plurality of output amplifying devices, one for each voltage range converted to digital form. Separately co... | 04/25/1978 |
| 4084111 | Apparatus for the digital control of analog signal A digital-analog converter electrically effecting sequential switching between a reference voltage point and each of the connection points formed in a circuit network composed of serially connected impedance elements for taking out desired analog quantity... | 04/11/1978 |
| 4058806 | Analog/digital converter A procedure for the parallel conversion of an analog signal to a cyclic binary code with one comparison to a threshold per channel, or bit, in which each channel is composed of an analog function generator, characterized by the fact that the transfer func... | 11/15/1977 |
| 4057795 | Analog-to-digital encoder This encoder comprises a series of resistors for determining the reference voltages, and comparators having at least one pair of outputs A and B. First inputs of said comparators are connected respectively to said resistors and second inputs of said compa... | 11/08/1977 |
| 4008468 | Analogue-to-digital converter with controlled analogue setting A precision and high-speed analogue-to-digital converter has two separate groups of comparators linked by an intermediate network comprising a digital-to-analogue converter made up of current generators which are controlled by the logical outputs from the... | 02/15/1977 |
| 3997894 | Analog-to-digital converter with electro-optical coding An EMP resistant A/D converter having no triggered circuits, the digital code word being formed by sampling the analog function on a periodic basis, selectively quantizing the levels sampled into channels providing the digits of the output code through a ... | 12/14/1976 |
| 3949170 | Signal transmitting system including A-D and D-A converters A signal transmitting system including an A-D converter for converting an analog input signal to a digital signal and a D-A converter for re-converting the digital signal to an analog output signal is provided with improved fidelity without increasing the... | 04/06/1976 |
| 3932865 | Analog-to-digital converter An accurate, simple and compact analog-to-digital converter has been found. The converter comprises A voltage divider circuit including a plurality of stepped voltage dividing points separated by a plurality of resistors for dividing the input voltage rec... | 01/13/1976 |
