Boots – shoes – and leggings
Patent
1976-01-07
1977-08-02
Zache, Raulfe B.
Boots, shoes, and leggings
360 51, G06F 100, G11B 502
Patent
active
040400220
ABSTRACT:
A circuit for detecting digital data recorded on a magnetic recording medium is disclosed wherein data is detected by detecting a missing clock and fixed data at the missing clock location. Clock and data pulses are interleaved on the recording medium and encoded to distinguish data and detecting the missing clock by encoding data corresponding to signal absence into the bit position adjacent to the last bit of the missed clock bit when such condition is present. The clock and data bits are detected from the decoded signal read from the recording medium by timing the first period between succeeding bits which is of greater time duration than the interval between succeeding clock and data bits but shorter than the interval between succeeding clock bits having a data bit interposed therebetween. A second timing means times the second period which is of greater time duration than the interval between two succeeding clock bits but shorter than the interval between a clock and data bit adjacent to the next clock bit. The times are then compared to determine whether a missing clock has occurred and a correction code is generated.
REFERENCES:
patent: 2780670 (1957-02-01), Brewster
patent: 3405391 (1968-10-01), Halfhill et al.
patent: 3418585 (1968-12-01), Harnett
patent: 3641526 (1972-02-01), Bailey et al.
patent: 3879753 (1975-04-01), Dunn
Cavender J. T.
Hawk Jr. Wilbert
Morris Jeffrey P.
NCR Corporation
Zache Raulfe B.
LandOfFree
Missing clock detection circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Missing clock detection circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Missing clock detection circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2303236