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. 06, 2004
Filed:
Sep. 27, 2001
Ryohei Kuki, Tokyo, JP;
Isao Takigasaki, Matsudo, JP;
Texas Instruments Incorporation, Dallas, TX (US);
Abstract
A detector ( ) and method for detecting a synchronization servo mark (SSM) in a data stream of mass data storage device ( ) has a matched filter ( ) to receive the data stream. The filter ( ) produces a maximum output when the SSM is applied. A delay element receives ( ) the matched filter output to produce a delay element output ( ). When the delay element output ( ) is greater than a predetermined threshold value (V ) and is larger than the output value ( ), the (SSM) is in a current time location. When the “D” element output ( ) is greater than the predetermined threshold value (V ) and less than the output value, the SSM is in the next time location. The threshold may be established to be less than maximum if the phase of the SSM is within a predetermined phase range.