George Nicholas Gooras
Engineers at Lefthand Dr, Longmont, CO
License number
Colorado 10272
Issued Date
Feb 20, 1971
Renew Date
Jan 31, 1995
Expiration Date
Jan 31, 1995
Type
Professional Engineer
Address
Address
1439 Lefthand Dr, Longmont, CO 80501
Professional information
Early End Of Tape Sensing For A Cache Buffered Tape Drive
US Patent:
4811132, Mar 7, 1989
Filed:
Sep 26, 1986
Appl. No.:
6/912935
Inventors:
Dan A. Hunter - Lafayette CO
Lawrence F. Opperman - Littleton CO
George Gooras - Longmont CO
Lawrence F. Opperman - Littleton CO
George Gooras - Longmont CO
International Classification:
G11B 1548, B65H 5938
US Classification:
360 743
Abstract:
An early end of tape sensing subsystem for a data processing system, including a host computer, a cache buffer, and a magnetic tape drive subsystem utilizes outputs dependent upon the movement of a capstan wheel, swing arm, and file reel of the magnetic tape drive subsystem, determining the net movement of tape therein in order to measure the circumference of the file reel plus tape thereon. Whenever a series of valid readings from a conventional sensor are obtained indicating that the circumference of the file reel plus tape is approaching that of the circumference of the file reel itself (i. e. , no tape on the file reel), a signal is sent to the microprocessor controlling the cache buffer, said signal indicating that the end of the tape is approaching.