Apparatus and method for acquiring multiple groups of data signals from a synchronous logic system
US4513395A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1983 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Mar 25, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2205/106
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.