CODING METHOD, DECODING METHOD, CODER, AND DECODER

摘要

A coding method, a decoding method, a coder, and a decoder are disclosed herein. A coding method includes: obtaining the pulse distribution, on a track, of the pulses to be encoded on the track; determining a distribution identifier for identifying the pulse distribution according to the pulse distribution; and generating a coding index that includes the distribution identifier. A decoding method includes: receiving a coding index; obtaining a distribution identifier from the coding index, wherein the distribution identifier is configured to identify the pulse distribution, on a track, of the pulses to be encoded on the track; determining the pulse distribution, on a track, of all the pulses to be encoded on the track according to the distribution identifier; and reconstructing the pulse order on the track according to the pulse distribution.

主权项

1. A method for coding, comprising:
obtaining a pulse distribution of the pulses to be encoded on a track, wherein the pulse distribution includes quantity of pulse positions, distribution of pulse positions on the track, and quantity of pulses in each pulse position; determining a first index according to the quantity of the pulse positions, wherein the first index corresponds to all possible distributions of the pulse positions on the track when the quantity of pulse positions is determined; determining a second index according to the distribution of pulse positions on the track, wherein the second index corresponds to a distribution, corresponding to a distribution of current pulse position, of the all possible distributions of the pulse positions corresponding to the first index; determining a third index according to the quantity of pulses in each pulse position, wherein the third index corresponds to the quantity of pulses in each pulse position; and generating a coding index that includes the first index, the second index, and the third index.