Digital signal recording apparatus in which interleaved-nrzi...

Details Digital signal recording apparatus in which interleaved-nrzi... Digital signal recording apparatus in which interleaved-nrzi...

G - Physics

11

B

G11B 20/14 (2006.01) G11B 15/46 (2006.01) H04N 5/926 (2006.01)

Patent

CA 2159291

A lone precoder of 2T type generates interleaved non-return to-zero, invert-on- ONEs (I-NRZI) modulation for digital signal recording apparatus used for recording in parallel tracks on a record medium, the interleaved codes providing for the inclusion of pilot signals in selected sets of recording tracks. A first set of NRZI codes is generated directly by the precoder, and a second set of NRZI codes. Preferably the lone 2T precoder is one that performs its coding of each information word on a parallel-bit basis, to implement pipeline processing of the generation of I-NRZI modulation, and to avoid the need for intermittently written or intermittently read buffer storage. The digital signal recording apparatus is suited for the recording of television signals, with pilot signals being included on the tracks when sync and run-up data are recorded, as well as when video and audio data are recorded.

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