Patent ID: 6118612
Filing Date: 2000-09-12
Classification: G06F,G11B

Abstract:
A disk drive subsystem comprising:at least one disk storage device, each disk storage device having at least one data storage disk mounted for rotation on a motor driven spindle;a controller for controlling the transfer of data and command information over a communication link connecting the controller with each said disk storage device, said data and command information being transmitted over said communication link in the form of frames comprising a plurality of multibit data characters;means in each said disk storage device for extracting synchronization signals, issued by said controller in the form of at least one multibit SYNC character of predefined format, from amongst the data and command information sent over said communications link, said synchronization signals and said data and command information being transmitted over the same communication link, said multibit SYNC character being transmitted within one of said frames of said data information and interleaved between multibit data characters of the one frame; andmeans in each said disk storage device for synchronizing the rotation of the motor driven spindle to the extracted synchronization signals.