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Method to Determine Tape Transport Cleaning Frequency, Based on Actual Amount of Tape Processed, With Operator Prompting Via Display

IP.com Disclosure Number: IPCOM000042576D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Danielsen, KD: AUTHOR [+2]

Abstract

The amount of tape passed across the read/write head, in a tape drive, can be used as a measure to determine the need for the cleaning operation. This invention provides a method for measuring the amount of tape processed on a reel-to-reel tape drive. When a given threshold is reached, the drive will provide a message on the message display to prompt the operator to clean the drive. This is novel because, in the past, drive cleaning has been done on a time basis (i.e., one per shift, once per day, etc.) This invention provides a method to prompt the operator to insert the cleaning cartridge based on actual tape passed over the read/write head, not just a time period. This will provide improved performance because cleaning frequency is determined by a more controlled method (i.e., tape passed over head).

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Method to Determine Tape Transport Cleaning Frequency, Based on Actual Amount of Tape Processed, With Operator Prompting Via Display

The amount of tape passed across the read/write head, in a tape drive, can be used as a measure to determine the need for the cleaning operation. This invention provides a method for measuring the amount of tape processed on a reel-to-reel tape drive. When a given threshold is reached, the drive will provide a message on the message display to prompt the operator to clean the drive. This is novel because, in the past, drive cleaning has been done on a time basis
(i.e., one per shift, once per day, etc.) This invention provides a method to prompt the operator to insert the cleaning cartridge based on actual tape passed over the read/write head, not just a time period. This will provide improved performance because cleaning frequency is determined by a more controlled method (i.e., tape passed over head). The machine reel, single line tachometer (Tach-1) counts are presently accumulated and stored in a counter when tape motion is in the forward direction. This count is decremented when the tape motion is in the backward direction, and is used to determine position relative to beginning of tape (BOT). Normal processing of data is in the forward direction and is followed by a rewind to BOT or a rewind/unload operation. Each time a rewind or rewind/unload command is issued by the operating system, the Tach-1 count, existing at the time,...