Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1981-07-31
1982-10-12
Miller, C. D.
Communications: electrical
Audible indication
Percussion-type sound producer
340347AD, 364553, 371 25, H03K 1302
Patent
active
043541771
ABSTRACT:
A method and apparatus for exciting the analog input of an analog-to-digital converter and examining the output by means of analysis with histograms to determine the amplitude probability distribution of each digital output value. The amplitude probability density functions corresponding to accurately known excitation signals may then be processed to obtain a description of the transfer characteristic for the analog-to-digital converter to be calibrated. In a particular embodiment, the excitation signals applied to the analog input of the analog-to-digital converter are pairs of signals representing accurately known rising and decaying exponential signals, and particularly exponential signals which are complementary to one another. Histograms of the digital response to the analog excitation signals are then constructed which correspond to amplitude density functions. The histograms may be processed in a manner which produces the transfer characteristic of the converter under test which is independent of the dynamic characteristics of the excitation signals, thus eliminating the need for accurate knowledge of the parameter values of the testing circuit.
REFERENCES:
patent: 3154738 (1964-10-01), Greene
Sellier "IBM Technical Disclosure Bulletin" vol. 22, No. 3, Aug. 1979, pp. 1039-1040.
Corcoran "IEEE Transactions on Instrumentation and Measurement" vol. IM-24 No. 4, Dec. 1975, pp. 370-374.
Pau "Fast Testing & Trimming of A/D and D/A converters in Automatic Test Systems" Paper Presented at 1978, IEEE Autotest.
Fairchild Camera & Instr. Corp.
Miller C. D.
Olsen Kenneth
Park Theodore S.
Pollock Michael J.
LandOfFree
Method and apparatus for calibrating an analog-to-digital conver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for calibrating an analog-to-digital conver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for calibrating an analog-to-digital conver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-225556