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:
May. 04, 1999
Filed:
Feb. 07, 1997
Sony Corporation, Tokyo, JP;
Abstract
A digital signal recording and/or reproducing apparatus and method can maintain a satisfactory continuity of a previously-recorded area and a postrecorded area by reducing a tracking displacement between the previously-recorded area and the postrecorded area. A signal from a playback amplifier (10) is supplied to a f1/f2 discriminating circuit (13), and a discriminated signal is supplied to a tracking information detector (14). A memory (15) is controlled by a system controller (100). Tracking information from the detector (14) is supplied to the memory (15) which independently memorizes tracking information signals of respective areas of a video signal, an audio signal, a subcode signal and an ITI signal. Tracking information signals of the respective areas memorized in the memory (15) are selected by a selector (16) formed of switches (16.sub.1 to 16.sub.4) and supplied to an averaging circuit (17). A tracking information signal averaged by the average circuit (17) is supplied to a servo circuit (8) which effects a tracking correction.