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Daniel F Canterbury, 8855612 27Th Pl, Strasburg, CO 80136

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55612 27Th Pl, Strasburg, CO 80136    303-6224445    303-6226776   

7999 W 57Th Ave, Arvada, CO 80002   

5700 Allison St, Arvada, CO 80002    303-4247613   

8714 W 86Th Ave, Arvada, CO 80005   

294 Fringe Ruff Dr, Las Vegas, NV 89148    303-4247613   

Montrose, CO   

Thornton, TX   

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Daniel Canterbury

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Daniel Canterbury

Location:
Greater Denver Area
Industry:
Computer Software

Publications & IP owners

Us Patents

Handling Defective Frames On Hard Sectored Magnetic Tape

US Patent:
5995306, Nov 30, 1999
Filed:
Jan 24, 1997
Appl. No.:
8/788790
Inventors:
John M. Contreras - late of Longmont CO
Steven F. Hartung - Boulder CO
Daniel J. Canterbury - Berthoud CO
Mark R. Ayres - Boulder CO
Assignee:
Exabyte Corporation - Boulder CO
International Classification:
G11B 2736
US Classification:
360 31
Abstract:
Method and apparatus are provided for re-recording of a frame on magnetic tape (22) when a first recording of the frame is determined to be defective. A frame whose first recording is defective is re-recorded at a spare or reserved location on the tape. The reserved location is dedicated to re-recording of frames, and otherwise cannot have data stored therein. The tape contains a defect map frame (326) which is used to pair physical locations of defective frames with the reserved location whereat the frame is re-recorded. In one embodiment, the reserved location whereat a frame is re-recorded is a reserved physical frame on the same track in which the defective frame is recorded. In another embodiment, the reserved location is on a reserved portion of a track (TG39R) which is not the original track (TG39) upon which the frame is recorded. For embodiments having multi-channel or multi-track frames, the reserved location employs a corresponding plurality of tracks.

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