Electricity: measuring and testing – Magnetic – Magnetic information storage element testing
Patent
1987-02-24
1989-02-21
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Magnetic
Magnetic information storage element testing
324226, 242186, 360 742, G01R 3312, G11B 1548, G03B 104, B65H 5938
Patent
active
048068616
ABSTRACT:
A method and an apparatus for detecting a defect of a magnetic tape which is loaded in a dictating machine for recording and reproducing dictations. In the event of initialization, the tape is automatically transported in a fast forward mode for a predetermined period of time and, then, a counter is loaded with an initial value. Thereafter, the tape is rewound while, at the same time, the counter counts reel rotation detection pulses. The tape is decided to be defective when the count of the counter at beginning of tape does not lie in a predetermined range, and free from defects when the count lies in the predetermined range. In an operation mode after the initialization, presence/absence of the pulses is detected. If the pulses are present, the count of the counter is compared with a predetermined reference value and, when the count is greater or smaller than the reference value, the tape is decided to be defective while, when the pulses are absent, the tape is decided defective if the count is not close to the reference value. The pulses are derived from a particular reel which is to take up a tape in a playback mode.
REFERENCES:
patent: 4553182 (1985-11-01), Narita
Kondo Kuniharu
Nakatsukasa Takeshi
Urayama Yuji
Eisenzopf Reinhard J.
Snow Walter E.
Victor Company of Japan , Limited
LandOfFree
Method and system for detecting tape defects by transporting a t does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for detecting tape defects by transporting a t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for detecting tape defects by transporting a t will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1524946