Apparatus and method for acquiring multiple groups of data...

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

G - Physics

06

F

354/225

G06F 11/28 (2006.01) G06F 11/30 (2006.01) G06F 11/32 (2006.01)

Patent

CA 1220870

APPARATUS AND METHOD FOR ACQUIRING MULTIPLE GROUPS OF DATA SIGNALS FROM A SYNCHRONOUS LOGIC SYSTEM Abstract of the Disclosure 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 sychronous logic system where each group contains a qualified data word together with a predetermined number of unqualified data words which have immediately preceded it. The apparatus includes a circuit for detecting the quali- fied 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 pro- vided to the storage device for storing the data word groups in successive storage locations. In an alter- native 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.

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