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| Number | Title | Issue Date |
| 4353058 | Digital to analog converter having an analog to digital converter portion for an AC operation or a DC operation A digital to analog converter is provided, for making a digital to analog conversion, and including, an analog to digital converter portion which may be an existing converter, an arithmetic logic unit which is coupled to the analog to digital converter po... | 10/05/1982 |
| 4349821 | Data acquisition system and analog to digital converter therefor From a plurality of parallel channels of communication, each including a voltage-to-frequency (V/F) converter, a central clock synchronously timed for each channel, the derivation of a train of pulses having a number of pulses representative of the magnit... | 09/14/1982 |
| 4334179 | Apparatus for demodulating a pulse excited synchro position sensor In a device having a synchro resolver and a microprocessor, the apparatus of the present invention utilizes a pulse excitation technique for converting a synchro output signal to a digital format. A pulsed waveform is selectively applied to the input wind... | 06/08/1982 |
| 4103337 | Data transmission system using analog to pulse width to digital conversion A data transmission system using analog to pulse width to digital conversion for transmitting data generated by an analog sensor to a digital processor is disclosed. A data request signal generated by the digital processor is gated by a processor interfac... | 07/25/1978 |
| 4087796 | Analog-to-digital conversion apparatus An analog-to-digital converter utilizing a pulse density concept wherein a pulse generator is used and the rate of generation of pulses is a function of the difference between the analog input and the indicated digital output. The pulses are utilized in a... | 05/02/1978 |
| 4077030 | Sensor data input by means of analog to pulse width-to digital converter A system for transmitting data from remote sensors to a digital processing system is disclosed herein. The analog sensor output is converted to pulse width signals at the sensor location and converted from pulse width to digital data at the digital proces... | 02/28/1978 |
| 4062005 | Synchro-to-digital converter employing common processing apparatus Circuitry monitors a plurality of rotating shafts, and provides a corresponding plurality of binary output words each characterizing the angular position of an associated shaft. Synchro and Scott "T" per-shaft monitoring elements are sampled by common mul... | 12/06/1977 |
| 4025736 | Apparatus for measuring the value of a variable condition The current flowing through a variable resistor of a transducer, responsive to a variable condition, is measured without interference with the normal operation of electrical circuitry to which the resistor is connected. Current-diverting means, connected ... | 05/24/1977 |
| 3961317 | System for remote reading of indicating devices such as meters and the like A system for remote reading of indicating devices such as meters and the like, which devices are comprised of a plurality of switch contacts and associated resistance elements. The reading systems senses the closing of one or more of a group of device con... | 06/01/1976 |
