Method for checking top and end of tape for data recording and r

Details Method for checking top and end of tape for data recording and r Method for checking top and end of tape for data recording and r

1994-10-28

1997-04-01

Voeltz, Emanuel T.

Boots, shoes, and leggings

2423337, 360 742, G11B 1500, G11B 1508

Patent

active

056173369

ABSTRACT:
A method for checking top and end of tape for data recording and reproducing apparatus is disclosed. The method includes a first step for sensing a transparent tape section of a start portion of a tape wound about a tape take-up reel so as to sense the tape top. At a second step, a tape supply reel rotation period is detected and the detected supply reel rotation period is compared to a preset value. When the detected supply reel rotation period is not longer than the preset value, the tape end is checked at a predetermined period. However, when the detected supply reel rotation period is longer than the preset value, no tape end is checked. The method makes top-end checking time become optimal and saves power of the recording and reproducing apparatus, and reduces pulse noise generated in turning on or turning off the top-end checking LED.

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patent: 5309300 (1994-05-01), Lee
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