Patent ID: 6018611
Filing Date: 2000-01-25
Classification: G11B,H04N

Abstract:
A digital recording and reproducing apparatus for recording and reproducing both high-resolution data for normal playback and low-resolution data, having a small amount of information compared with the high-resolution data, for special playback on a recording medium, utilizing different recording areas of the recording medium, the low-resolution data having a same program content as the high-resolution data, the digital recording and reproducing apparatus completely recording a group of data consisting of a limited number of frames on an integer number of adjacent recording tracks, the group of data including the low-resolution data which are formed with respect to the group of data, the digital recording and reproducing apparatus comprising:a controller for adaptively varying an amount of the low-resolution data, by enabling searching and editing with a group of mixed data as a unit so as to effectively record the high-resolution data and the low-resolution data on the integer number of adjacent recording tracks, by completely recording a mixed data group comprising the high-resolution data and the low-resolution data on the integer number of adjacent recording tracks, so that no unnecessary vacant position is formed on the integer number of adjacent recording tracks,wherein when an amount of the high-resolution data for normal playback is large, an amount of the low-resolution data for special playback is reduced by said controller in accordance with an increase in the high-resolution data, and when the amount of the high-resolution data is small, the amount of the low resolution data is increased by said controller in accordance with a decrease in the high-resolution data.