Apparatus and method for acquiring multiple groups of data signa

Details Apparatus and method for acquiring multiple groups of data signa Apparatus and method for acquiring multiple groups of data signa

1983-03-25

1985-04-23

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 100

Patent

active

045133956

ABSTRACT:
An apparatus and method which may be used with a logic analyzer are provided for acquiring groups of data words from the circuitry of a synchronous logic system where each group contains a qualified data word together with a predetermined number of data words which have preceded it. The apparatus includes a circuit for detecting the qualified word and a data storage device having a plurality of separately-addressable storage locations. Both the qualified data detector and the storage device are logically connected to the synchronous logic circuitry. The apparatus further includes an addressing circuit which responds to the detection of a qualified word and to the presence of data words on the synchronous logic circuitry by producing storage addresses which are provided to the storage device for storing the data word groups in successive storage locations. In an alternative embodiment, the addressing means responds to qualified word detection and to the number of data words stored in the storage locations such that each stored group of data words contains a qualified word and a respective number of data words.

REFERENCES:
patent: 4040025 (1977-08-01), Morrill, Jr. et al.
patent: 4139903 (1979-02-01), Morrill, Jr. et al.
patent: 4241416 (1980-12-01), Tarczy-Hornoch
"P1540 Logic Analysis System Operator's Manual", Paratronics, 1980, pp. 3-1 to 3-6 and 7-1 to 7-8.
"Logic Analyzer PM 3551", Philips.

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