Decoding apparatus, decoding method, recording/reproducing apparatus, program storage medium, and program
OwnerHiroyuki Yamagishiinventor
Life of this patent
Estimating the term…
Abstract
The states S0 to S9 in a state-transition table, which is a combination of (d,k) Run Length Limited (RLL) codes and a Parallel Response (PR1) channel having a precoder, correspond to ten states defined by dividing each of the five states S0 to S4 in the state-transition table used to encode data into (d,k) RLL codes. That is, the states S0 to S4 correspond to the cases where the immediately preceding Non Return to Zero (NRZ) code is “0” in the state-transition table of the (d,k) RLL codes, and the states S5 to S9 correspond to the cases where the immediately preceding NRZ code is “1” in the state-transition table of the (d,k) RLL codes. This method can be applied to recording/reproducing apparatuses.
Claims11
A decoding apparatus comprising:
- acquiring means for acquiring encoded data in a method described by a first finite state transition diagram;
- and
- means for decoding the acquired encoded data by using a trellis corresponding to a second finite state transition diagram that is a combination of the first finite state transition diagram and intersymbol interference, said encoded data having been generated by encoding an information series.
A decoding method comprising the steps of:
- acquiring encoded data generated by encoding an information series in a method described by a first finite state transition diagram;
- and
- decoding the encoded data acquired in the step of acquiring by using a trellis corresponding to a second finite state transition diagram that is a combination of the first finite state transition diagram and intersymbol interference.
A program storage medium storing a computer-readable program that describes the steps of:
- acquiring encoded data generated by encoding an information series in a method described by a first finite state transition diagram;
- and
- decoding the encoded data acquired in said step of acquiring by using a trellis corresponding to a second finite state transition diagram that is a combination of the first finite state transition diagram and intersymbol interference.
A program describing the steps of:
- acquiring encoded data generated by encoding an information series in a method described by a first finite state transition diagram;
- and
- decoding the encoded data acquired in said step of acquiring by using a trellis corresponding to a second finite state transition diagram that is a combination of the first finite state transition diagram and intersymbol interference.
A recording/reproducing apparatus comprising:
- encoding means for encoding an information series in a method described by a first finite state transition diagram;
- recording/reproducing means for recording and reproducing data encoded by the encoding means, in and from a recording medium;
- and
- decoding means for decoding the encoded data reproduced by the recording/reproducing means by using a trellis corresponding to a second finite state transition diagram that is a combination of the first finite state transition diagram and intersymbol interference.
Dependencies are inferred from the claim text.