Method and device for pulse encoding, method and device for pulse decoding

A method for pulse decoding, the method comprising:

• demultiplexing an encoding code stream and extracting the first number of encoding bits from the demultiplexed encoding code stream;
• if a decoded value of the first number of encoding bits is smaller than an adjustment threshold value, outputting the decoded value of the first number of encoding bits;
• and
• if the decoded value of the first number of encoding bits is greater than or equal to the adjustment threshold value, decoding the second number of encoding bits, wherein the second number of encoding bits is extracted from the code stream, and outputting a decoded value of the second number of encoding bits, wherein the first number is smaller than the second number, and the first number and the second number are both positive integers.

A device for pulse encoding, the device comprising:

• a calculating unit, configured to calculate an index value of an input pulse;
• a selection unit, configured to select an adjustment threshold value according to the number of pulses;
• and
• an encoding unit, configured to adopt the first number of encoding bits to encode the index value if the index value calculated and obtained by the calculating unit is smaller than the adjustment threshold value selected by the selection unit, and adopt the second number of encoding bits to encode the index value plus an offset value if the index value calculated and obtained by the calculating unit is greater than or equal to the adjustment threshold value selected by the selection unit, wherein the first number is smaller than the second number, the first number and the second number are both positive integers, and the offset value is greater than or equal to the adjustment threshold value.

A device for pulse decoding, the device comprising:

• an extraction unit, configured to demultiplex an encoding code stream and extract the first number of encoding bits from the demultiplexed encoding code stream;
• a decoding unit, configured to decode the first number of encoding bits, wherein the first number of encoding bits is extracted by the extraction unit, and if a decoded value of the first number of encoding bits is greater than or equal to an adjustment threshold value, decode the second number of encoding bits, wherein the second number of encoding bits is extracted from the encoding code stream;
• and
• an output unit, configured to output the decoded value of the first number of encoding bits if the decoded value of the first number of encoding bits decoded by the decoding unit is smaller than the adjustment threshold value, and output a decoded value of the second number of encoding bits if the decoded value of the first number of encoding bits decoded by the decoding unit is not smaller than the adjustment threshold value, wherein the first number is smaller than the second number, and the first number and the second number are both positive integers.