An information storage device (10) includes a cartridge (14) removably inserted into a cradle (13) that has a drive module (18) releasably coupled to an interface module (17). A drive electronics circuit (71) in the drive module is coupled to a hard disk drive mechanism (56) in the cartridge, and is coupled through a bus switch (131) and a bus (122) to a bridge circuit (111) in the interface module. An auxiliary circuit (76) in the drive module is coupled to the bus, is controlled by the bridge circuit, operates the bus switch, and handles considerations relating to removability of the cartridge. The interface module is one of several interchangable interface modules which each have a different bridge circuit to interface the bus to a respective different communication protocol.

Title
Method and apparatus for providing extended functionality for a bus
Application Number
9/855993
Publication Number
20020169911
Application Date
May 14, 2001
Publication Date
November 14, 2002
Inventor
Jeffery D Penman
Ogden
UT, US
Hiromichi Oribe
Clearfield
UT, US
Mark L Reimann
Layton
UT, US
Kelly D Wright
Layton
UT, US
Marvin R DeForest
Niwot
CO, US
Theodore J Smith
Layton
UT, US
Todd R Shelton
Syracuse
UT, US
Agent
Baker Botts
TX, US
Agent
T Murray Smith Esq
TX, US
IPC
G06F 13/38
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