The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 1996
Filed:
May. 28, 1992
William Buchan, Irvine, CA (US);
Edward Patrick, Westminster, CA (US);
M Takahashi, Kawauchi Onsengun, JP;
J V Howell, Newport Beach, CA (US);
Conner Peripherals, Inc., San Jose, CA (US);
Abstract
A data smoother for a streaming cartridge tape drive including a data separator circuit for generating a clock signal and a second phase-locked loop circuit for removing frequency modulation arising from instantaneous speed variation (ISV) errors. The broad-band data separator follows all of the ISV generated by the cartridge tape drive to permit detection and correction of cell-slippage in a First-In-First-Out (FIFO) circuit, which accepts the data and clock signal from the data separator. The second PLL has a narrow bandwidth filter that smoothes the clock signal and removes all high-frequency ISV modulation from the data as it is clocked out from the FIFO circuit. The MFM data signal is regenerated by a monostable multivibrator in synchronism with the smoothed clock signal.