Data Recording and/or reproducing device and method
A technology for a data recording and reproducing device, which is applied in the directions of data recording, configuration/installation of recording heads, storage of recorded information, etc., and can solve the problems of inability, low signal noise of read signals, and reduction of crosstalk.
Inactive Publication Date: 2006-04-12
SONY CORP
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Problems solved by technology
[0008] However, since a head with a single azimuth is used as described above, and data is read / written by a non-tracking system, the azimuth loss cannot be used to reduce crosstalk between adjacent recording tracks, and the read The signal-to-noise (S / N) ratio of the output signal is very low, which will lead to poor data playback characteristics
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[0043] First, a tape-shaped recording medium (hereinafter referred to as "tape") to which data is written or read by a data recording and / or reproducing apparatus according to the present invention will be described.
[0044] see figure 2 , which shows a recording pattern of the recording and / or reproducing apparatus according to the present invention. A recording pattern 111 is written on the magnetic tape to form a recording track 110 using a so-called azimuth recording head. Such as figure 2 As shown in , several recording patterns 111 are written on the magnetic tape such that the longitudinal direction A of the recording tracks 110 is perpendicular to the longitudinal direction B of the recording patterns 111.
[0045] image 3 A data format on a magnetic tape to which data is written or read by a recording and / or reproducing apparatus according to the present invention is shown. As shown, for example, video and audio data 101 of images and sounds and error correcti...
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To assure good data playback characteristics even when reading data from a magnetic tape having recording tracks at a narrow pitch, a data recording and / or reproducing apparatus is provided which includes a tape feeder 7 to feed a magnetic tape 100, a magnetic head 4 including a playback head having a width smaller than the recording width of the recording tracks to read data from the magnetic tape 100 and a record head to write data to the magnetic tape 100, a rotating drum 5 on which the magnetic tape 100 is scanned by the magnetic head 4, a rotating drum controller 6 to allow the playback head to scan the recording tracks at least two times in order to detect data recorded in the magnetic tape 100, and a read signal processor 3 to reproduce data recorded in the magnetic tape 100 from the data detected by the playback head having been allowed by the rotating drum controller to scan the recording tracks the plurality of times.
Description
technical field [0001] The present invention relates to a data recording and / or reproducing apparatus and method in which helical scanning is used to write data to a tape-shaped recording medium by a recording head mounted on a drum, Put the head down and read data from the recording medium. Background technique [0002] Many video tape recorders (VTRs) employ helical scanning to write video data to or from a tape-shaped recording medium (hereinafter referred to as "tape") via several magnetic heads mounted on a rotating drum. Read out video data. [0003] The VTR employs azimuth recording so that when data is read from a recording track formed in a magnetic tape, crosstalk noise caused by detection of data from an adjacent recording track can be reduced. [0004] figure 1 Explains how conventional magnetic heads with different azimuth angles record data separately to adjacent recording tracks. As shown, data is recorded on adjacent recording tracks 401 and 402 in a reco...
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Patent Timeline
Login to View More IPC IPC(8): G11B5/53H04N5/7826G11B5/48G11B5/584G11B15/14G11B15/467
CPCG11B5/584G11B5/48
Inventor 小谷保孝水野雅之
Owner SONY CORP