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| Number | Title | Issue Date |
| 5418470 | Analog multi-channel probe system A programmable analog multi-channel probe system is embedded within a device under test for coupling test points to external measurement points of the device under test. Programmable input buffer amplifiers are coupled to the test points to couple the dat... | 05/23/1995 |
| 4562363 | Method for using a charge coupled device as a peak detector A charge coupled device (CCD) with separately addressable input signal gates is operated in the potential equilibrium mode. With properly selected voltage potentials the CCD can be used as a high speed linear detector of a variable analog signal without t... | 12/31/1985 |
| 4510571 | Waveform storage and display system A waveform storage and display system particularly useful in digital oscilloscopes is provided in which successive waveforms of a repetitive signal are compared with a reference waveform, and upon detection of a difference or change within the waveform, t... | 04/09/1985 |
| 4346333 | Position control circuit for a digital oscilloscope A digital oscilloscope is provided with a position control circuit which permits positioning of a signal both before and after digitizing. A track and hold circuit is coupled to the position control potentiometer to generate a reference voltage which trac... | 08/24/1982 |
| 4263593 | Display interpolator employing a transversal filter for a digital oscilloscope A display system for a digital oscilloscope includes an interpolator for interpolating between stored waveform samples and providing additional samples at the interpolated values to thereby increase dot density of the resulting display.... | 04/21/1981 |
| 4251814 | Time dot display for a digital oscilloscope A digital oscilloscope is provided with a display system which permits intensified time dots to be positionable between samples on a displayed waveform. The display system has a time dot memory having at least twice the number of addressable storage locat... | 02/17/1981 |
| 4251815 | Signal-envelope display system for a digital oscilloscope A signal-envelope display system for a digital oscilloscope includes a memory for storing minimum and maximum signal values in adjacent storage locations, an address counter for sequentially addressing the memory, and a control circuit for selecting the l... | 02/17/1981 |
| 4251754 | Digital oscilloscope with reduced jitter due to sample uncertainty Jitter due to sample uncertainty in a digital oscilloscope is reduced by horizontally shifting each frame of a repetitive waveform display to provide an apparent time coincidence of each frame. The time interval between a fixed point on the successive wav... | 02/17/1981 |
