US 6,982,586 B2
Systems and methods for clock generation using hot-swappable oscillators
Robert M. Mondor, Sutton, Mass. (US)
Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US)
Filed on Mar. 22, 2004, as Appl. No. 10/805,863.
Prior Publication US 2005/0206428 A1, Sep. 22, 2005
Int. Cl. G06F 1/04 (2006.01)
U.S. Cl. 327—291 20 Claims
OG exemplary drawing
 
1. A clock generation system, comprising:
a redundant clock source (RCS) device for receiving multiple timing signals and for generating at least one clock from said timing signals for distribution to other circuits; and
first and second hot-swappable oscillator (HSO) devices that each comprise a base housing and an oscillator unit for generating a timing signal, said base housing including an interconnect for coupling to said oscillator unit, said interconnect providing a first connection for said timing signal and providing a second connection to enable detection of insertion and removal of said oscillator unit;
wherein said RCS device switches between timing signals from said first and second HSO devices in response to oscillator unit removal detected through said interconnect and switches between timing signals in response to timing signal failure.