Clock selection control device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 18, 1994
Grant Date -
N/A
app pub date -
Jan 31, 1994
filing date -
Sep 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clock stoppage detector and a selector selection determining circuit are provided on each of a plurality of circuit boards. If any abnormality is detected in the clock selected in accordance with selector control information supplied from a clock selection controller provided common to the plurality of circuit boards, the selector selection determining circuit changes the selection independently of the selection control information. The selector selection determining circuit also performs clock selection independently when failure occurs to the clock selection controller.
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