STOCHASTIC RASTERIZATION OF WAVEFORM TRACE DISPLAYS

摘要

A stochastic system in a waveform monitor reduces the amount of memory used to store waveform data as it is being accumulated. The system produces a high quality trace display using fewer bits of memory by incrementing pixels using stochastic methods. In at least some embodiments, possible memory values are divided into two or more value ranges and an increment percentage is ascribed for each of the value ranges. During operation, first a present stored value is read from the memory store and its ascribed increment percentage for the particular range is selected. Then the present stored value is stochastically incremented based on the percentage for the particular range.

主权项

1. In a waveform monitor, a method of incrementing a stored value in a memory store that has a minimum and maximum value, the method comprising:
dividing values that are between the minimum and maximum values into two or more value ranges; ascribing an increment percentage for each of the value ranges; reading a present stored value from the memory store; selecting the ascribed increment percentage of the value range associated with the present stored value as a present increment percentage; and incrementing the present stored value based on the present increment percentage.