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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Graham; Randolph H.
Address:
Fremont, CA
No. of patents:
6
Patents:












Patent Number Title Of Patent Date Issued
5379439 Fixed disk drive mounted to printed circuit board January 3, 1995
A fixed disk memory subsystem connects to digital signal buses and a power supply of a host computer and includes a printed circuit board forming a subsystem mounting substrate for mounting and connecting a head and disk assembly and drive electronics. The head and disk assembly includes
4914530 Media defect management within disk drive sector format April 3, 1990
In a rotating disk drive for storing and retrieving data used by a host system computer, a narrow gap is provided within a data sector format for each concentric data track of the drive. This gap may be normally located at the end of the track, in a speed tolerance buffer region followin
4882671 Microprocessor controlled rigid disk file subsystem November 21, 1989
A control system for a micro-Winchester or smaller disk file includes head position control circuitry including at least one servo loop for controlling an electromechanical head positioner relative to a rotating data storage disk, a data controller for controlling reading and writing
4860194 A method for using a modular unitary disk file subsystem August 22, 1989
A modular unitary disk file subsystem is used directly with a host computer. The subsystem includes a common unitary mounting substrate for power and signal connections to the host and for supplying control and data signals back via data, address and control buses to the host computer
4819153 Microprocessor controlled rigid disk file subsystem April 4, 1989
An improved control system for a disk file includes head position control circuitry including at least one servo loop for controlling an electromechanical head positioner relative to a rotating data storage disk, a data controller for controlling reading and writing of data blocks fr
4639863 Modular unitary disk file subsystem January 27, 1987
A self contained fixed rotating disk expansion board subsystem may be installed and connected at an expansion slot location of a host computer. The subsystem includes an enclosed head/disk assembly, and circuit elements mounted on a printed circuit board which includes a connector for










 
 
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