Patent ID: 6456781
Filing Date: 2002-09-24
Classification: G11B,H04N

Abstract:
Apparatus for recording a first information signal with a first bit-rate in a first recording mode or a second information signal with a second bit-rate in a second recording mode so as to produce slant tracks on a magnetic record carrier, the apparatus comprising:input means for receiving the first or the second information signal; processing means for processing the first or the second information signal to produce a processed first or second information signal, respectively; writing means for writing the processed first or second information signal in said first and second recording modes, respectively, to produce said slant tracks; and transporting means for transporting the record carrier with a first or a second record carrier speed in said first and second recording modes, respectively, the second record carrier speed being larger than the first record carrier speed, and the second bit-rate being higher than the first bit-rate, wherein the processing means comprises:a multiplexer coupled to receive said first or said second information signal, said multiplexer, in said first recording mode, passing said first information signal to a first output, and, in said second recording mode, multiplexing said second information signal into a first signal component for application to said first output and a second signal component for application to a second output; a first processing unit coupled to said first output of said multiplexer for processing the first information signal, in said first recording mode, to form said processed first information signal for recording, the first processing unit further processing the first signal component into a processed first signal component in said second recording mode; and a second processing unit coupled to the second output of the multiplexer for processing the second signal component into a processed second signal component in said second recording mode, wherein the writing means comprises:at least one pair of a first and a second write head having azimuth angles substantially equal to +&agr; and âˆ’&agr;, respectively; and at least one pair of a third and a fourth write head having azimuth angles substantially equal to +&bgr; and âˆ’&bgr;, respectively, &bgr; being unequal to &agr;, and wherein the writing means writes, in said first recording mode, the processed first information signal on said record carrier using said at least one pair of the first and second write head, and the writing means further writes, in said second recording mode, said processed first signal component on said record carrier using said at least one pair of the first and second write head, and said processed second signal component on said record carrier using said at least one pair of the third and fourth write head.