Patent ID: 6389219
Filing Date: 2002-05-14
Classification: G11B,H04N

Abstract:
Method for controlling the phase relation between a head drum and tape feed system of a magnetic recording device for digital picture information, wherein the digital picture data is subdivided in blocks having assigned a pointer value each and wherein the pointer values define which part of the picture the block of picture data represents, characterized by the steps of:incrementing or decrementing a location in a measured value store on recognition of a corresponding pointer value with the corresponding data block in the reproduced data system; monitoring the content of the locations in the measured value store after a certain amount of reproducing time by means of: determining the distance between pointer value regions which have been reproduced more often than the regions in-between, thereby taking into account the difference in reproducing frequency between the more often reproduced regions and the more seldom reproduced regions according to the measured value store entries and determining a phase correction value for the control of the phase relation between head drum and tape feed system based on the distance between pointer value regions.