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:
Aug. 09, 1994
Filed:
Apr. 14, 1992
Sony Corporation, Tokyo, JP;
Abstract
A magnetic recording apparatus comprises a time base compressing portion for causing a video signal to be subjected to time base compression, a recording signal producing portion for forming a recording video signal based on the video signal with compressed time base, a tape guide cylinder, a rotary magnetic head device disposed in the tape guide cylinder, and a recording signal supplying portion for supplying the rotary magnetic head device with the recording video signal, wherein assuming that .alpha. represents the diameter of a standard tape guide cylinder employed in a standard apparatus, .beta. represents a tape wrapping angle on the standard tape guide cylinder, .gamma. represents the revolving speed of a standard rotary magnetic head device disposed in the standard tape guide cylinder, and .delta. represents the number of magnetic gap portions of the standard rotary magnetic head device, the diameter of the tape guide cylinder is selected to be X.multidot..alpha., where X is a positive number smaller than one, the tape wrapping angle on the tape guide cylinder is selected to be .beta./X, the revolving speed of the rotary magnetic head device is selected to be Z.multidot..gamma., where X is a positive integer larger than 1 and smaller than 4, and the number of magnetic gap portions of the rotary magnetic head is selected to be .delta..