| 摘要 |
<p>A method and apparatus for recording and replaying variable speed data uses a rotating drum device. When information to be recorded is presented to the transfer rate of the information, be recorded is determined. If this information is not presented at a standard information transfer rate (N), it is converted to that standard rate. If the information not only is not at the standard rate N, but is outside a predetermined amount from that standard rate, the travel speed of the magnetic medium is slowed and the activation sequence of the magnetic recording head is altered. In the case where the information to be recorded is at a rate outside of the predetermined rate, the magnetic medium travel speed is reduced from the standard speed (L/T) in relation to the information transfer rate of the information to be recorded. If the tape speed is reduced to L/XT, then the activation sequence is every Xth head. During replay, the information is read from the medium at the standard information transfer rate and the medium travel speed and the head activation sequence are altered accordingly, if necessary. The information is then converted to the original information transfer rate by digital circuitry.</p> |
