Data storage track padding apparatus

Details Data storage track padding apparatus Data storage track padding apparatus

G - Physics

11

B

352/19

G11B 5/00 (2006.01) G06F 13/12 (2006.01) G11B 27/10 (2006.01)

Patent

CA 1052904

DATA STORAGE TRACK PADDING APPARATUS ABSTRACT OF THE DISCLOSURE In data processing systems, several data storage files, such as disk files, are operated by a single, shared control unit for conducting normal read/write functions. Apparatus is located at and provided for each of the data storage files to assume control of the writing function from the control unit to pad a track with null characters from the end of the last record to a predetermined point on the track sensed by the file. The apparatus in- cludes a local oscillator and apparatus for supplying the padding bits signals from the oscillator beginning with the termination of the control unit write gate signal for the track and continuing until a predetermined point of the track is detected. Apparatus is also provided for signaling the control unit that padding by the device is in progress and for signalling the control unit prior to the predetermined point.

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