Devices and methods of source-encoding and decoding of data

Abstract

An encoder (20) for encoding data (D1, 10) to generate corresponding encoded data (E2, 30) is provided, wherein the encoded data (E2, 30) includes information indicative of a frequency, probability or range of one or more symbols to be represented in the encoded data (E2, 30). The encoder (20) is operable to include in the encoded data (E2, 30) additional information indicative of whether or not information indicative of a frequency, probability or range for at least one symbol amongst the one or more symbols is included in the encoded data (E2, 30). The encoder (20) is operable to include in the encoded data (D3, 30) the additional information of whether or not information indicative of a frequency, probability or range for at least one symbol amongst the one or more symbols is included in the encoded data (E2, 30) expressed as single availability bit information. Beneficially, the encoder (20) is operable to represent inclusion of information indicative of the frequency, probability or range information in the encoded data (E2, 30) by use of a single availability bit value " 7", and non-inclusion of information indicative of the frequency, probability or range information in the encoded data (E2, 30) by use of a single availability bit value "0".

Description

technical field [0001] The present disclosure relates to a method of encoding data (D1) to generate corresponding encoded data (E2). Furthermore, the present disclosure also relates to a method of decoding the aforementioned encoded data (E2) to generate corresponding decoded data (D3) and / or a transcoded version of the decoded data (D3). Furthermore, the present disclosure also relates to encoders and decoders operable to implement the aforementioned methods; such encoders and decoders in combination constitute a codec. Additionally, the present disclosure relates to a computer program product comprising a non-transitory computer-readable storage medium having computer-readable instructions stored thereon, the computer-readable instructions being executable by computing hardware for performing the method described above. Background technique [0002] In general, if figure 1 As shown in , a known encoding method for encoding input data (D1) 10 to encoder 20 to generate cor...

AI Technical Summary

Problems solved by technology

However, sending extremely precise frequency, probability or interval values ​​requires more data size

In other words, there is a tradeoff between sending exact frequency, probability or interval values ​​for symbols and achieving the best possible compression efficiency in the encoded data (E2)

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