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:
Oct. 31, 2000
Filed:
Apr. 09, 1999
Frank Lane, Medford Lakes, NJ (US);
Jill MacDonald Boyce, Manalapan, NJ (US);
Michael Allen Plotnick, Southampton, PA (US);
Joseph Ellis Augenbraun, Princeton, NJ (US);
Masuo Oku, Kamakura, JP;
Hitachi America, Ltd., Tarrytown, NY (US);
Abstract
Digital video tape recorder ('VTR') and servo circuit for supporting the display of images during trick play VTR operation. The digital VTR, in one embodiment, having a single pair of heads of alternating azimuths located on a head cylinder one track width apart. The digital VTR records data that can be used to generate images during trick play tape speeds and directions of operation in fast scan tracks defined by the paths the single pair of heads trace over the tape during trick play operation. Each fast scan track crosses multiple normal play tracks. Sync blocks and track identification information are recorded on the tape along with video data. To align the heads with the appropriate fast scan track during trick play operation, a lookup table containing information on the pattern of fast scan tracks recorded on the tape is used. The information stored in the look-up table is compared to sync block number and track number information recorded on the tape to determine haw much the position of the tape must be adjusted to align the heads with the prerecorded fast scan tracks on the tape for the any selected speed and direction of digital video tape recorder operation.