Patent · US Active

Efficiency of compression of data pages

US8984355B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Benedikt Geukes · Stuttgart, DE
Heiko Michel · Stuttgart, DE
Matteo Michel · Chemnitz, DE
Manfred Walz · Pfalzgrafenweiler, DE

Key dates

Filing date	Dec 6, 2012
Grant date	Mar 17, 2015
Priority date	—
Expiry date	Feb 15, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/318555
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A technique for controlling scan access of multiple scan devices (including or more slave scan devices and a master scan device) to a scan chain includes sending, by a requesting slave scan device included in the one or more slave scan devices, a first request for access to the scan chain to the master scan device. The master scan device and the one or more slave scan devices are connected to the scan chain. The technique also includes receiving, at the requesting slave scan device, an evaluation result from the master scan device and accessing, by the requesting slave scan device, the scan chain in response to the evaluation result indicating access granted. Finally, the technique includes sending, by the requesting slave scan device, one or more second requests for access to the scan chain to the master scan device in response to the evaluation result indicating access denied.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.