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| Number | Title | Issue Date |
| 7573412 | Digital-to-analog converter (DAC) A digital to analog converter (DAC) is provided. The DAC includes a first loop unit to receive a plurality of sources and comprising a plurality of primary winding of transistors formed at a plurality of locations, and a second loop unit comprising secondary winding... | 08/11/2009 |
| 7348909 | Reconfigurable mixed-signal VLSI implementation of distributed arithmetic Disclosed herein is a reconfigurable mixed signal distributed arithmetic system including: an array of tunable voltage references operable for receiving a delayed digital input signal; a combination device in electrical communication with the array of tunable floati... | 03/25/2008 |
| 7154349 | Coupled-inductor multi-band VCO A multi-band VCO employs a coupled-inductor based resonator having N≧2 ports. Each port has an inductor and at least one capacitor. The N inductors for the N ports are magnetically coupled. The inductors/ports may be selectively enabled and disabled to allow the V... | 12/26/2006 |
| 7020301 | Loudspeaker A loudspeaker comprising at least one magnet 27, a yoke 24 fixed to a bottom surface of the magnet, a flat plate 26 fixed on an upper surface of the magnet, a magnetic circuit 29 having a magnetic gap 28 formed between the plate an... | 03/28/2006 |
| 5398030 | High-performance superconducting digital-to-analog converter employing double-junction squid flip-flops A high-performance superconducting digital-to-analog (D/A) converter providing asynchronous high-speed, low-power D/A conversion. The high-performance superconducting D/A converter includes a double-junction superconducting quantum interference device (SQ... | 03/14/1995 |
| 5225784 | DC Current comparator circuit for generating an adjustable output proportional to an input signal A DC current-comparator-based circuit generates an adjustable output proportional to an input signal, i.e. an input voltage or current. One use of the circuit is in the formation of a DC resistance bridge that can be controlled automatically by a micropro... | 07/06/1993 |
| 5128675 | Superconducting digital to analog converter In a superconducting digital to analog converter, shunt branches of a ladder resistor network are connected to corresponding Josephson devices, the states of which are switched by a digital signal. Currents following through the Josephson devices or load ... | 07/07/1992 |
| 5012238 | Absolute encoder An absolute encoder for detecting the absolute (as opposed to the relative) rotational displacement of an encoder shaft includes a pair of pitch signals recorded on tracks and an associated signal processing circuit. The pair of pitch signals have differe... | 04/30/1991 |
| 4638302 | Digital-to-analog converter A converter for converting a series of digital input bits to an analog output employs a direct current comparator having a magnetic core and primary and secondary ratio windings coupled with the core. The primary winding is divided into two sections. A fi... | 01/20/1987 |
| 4612420 | Loudspeaker system for converting a digitized electric signal into an acoustic signal An electrodynamic transducer (1) for use in a loudspeaker system for converting an n-bit digitized electric signal (11) into an acoustic signal comprises n voice-coil devices (4.1, 4.2, . . . 4.n) which cooperate with a magnet system (3). The voice-coil d... | 09/16/1986 |
| 4016559 | Digital-to-analog converter having transient suppressor system A digital-to-analog converter having means to suppress the transient signals present at the output of the converter in response to a clock pulse synchronized with the transient signal. The clock pulse applies a forward bias to a pair of series-connected d... | 04/05/1977 |
