Method and apparatus for providing a histogram

Details Method and apparatus for providing a histogram Method and apparatus for providing a histogram

1985-03-11

1988-09-27

Gruber, Felix D.

Boots, shoes, and leggings

364717, G06F 758, G06F 1536

Patent

active

047746815

ABSTRACT:
Information for a histogram is provided through generation of a pseudo-random sequence in a shift register connected in predetermined feedback relation. A histogram element storage location is addressed in a random access memory and is used for loading the shift register in parallel when an event corresponding to that element takes place. The shift register proceeds from that point to increment a pseudo-random sequence for the duration of the event, and the concluding value of the sequence is loaded back into the random access memory location at the conclusion of the event. A network between the random access memory and the shift register loads the shift register with a pattern that replicates the pattern that would exist in the shift register if the shift register had already been loaded and the data therein was shifted once.

REFERENCES:
patent: 3777278 (1973-12-01), Majeau et al.
patent: 4047008 (1977-09-01), Perkins
patent: 4161041 (1979-07-01), Butler et al.
patent: 4511961 (1985-04-01), Penton
patent: 4542461 (1985-09-01), Eldridge et al.
Kerman: A Facility for Analyzing System Performance, IEEE Compcon 1979, pp. 79-82.
"Datamyte 400", published by Electro General Corporation of Minnetonka, Minn.

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