Delta modulation in discrete cosine transform

Pogribny, W.; Drechny, M.

doi:10.1109/isp.2003.1275813

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…In works [2] and [3] the authors proposed a method of coding named MDPCM. At this method the DPCM quantization steps are chosen from the set of the natural numbers, which are the power of number 2.…”

Section: Introductionmentioning

confidence: 99%

Fast Operations with the Use of Differential Codes

Pogribny

Drechny

2007

EUROCON 2007 - The International Conference on "Computer as a Tool"

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This paper presents the new approach to a rate increase of multiplication, which is the most commonly used operation in data computation. Multiplications are usually done in multibit Pulse Code Modulation (PCM) format. However, applying this format is connected with doing many time-consuming operations what often causes the increase of the total calculation time. On the other hand, mixed formats which join differential codes with PCM codes can lead to the decrease of code word length and speed-up operation in the data computation. Differential codes can be obtained on the basis of differential kinds of Delta Modulation (DM). Some kinds of DM such as MDPCM (Modified DPCM) and SDPCM (Synthetic DPCM) enable to replace the multiplications with fast shift operations.

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Section: Introductionmentioning

confidence: 99%

Fast Operations with the Use of Differential Codes

Pogribny

Drechny

2007

EUROCON 2007 - The International Conference on "Computer as a Tool"

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Fast-acting and resolution improve of DCT algorithms with the use of synthetic coding

Pogribny

Drechny

SympoTIC '04. Joint 1st Workshop on Mobile Future &Amp; Symposium on Trends in Communications (IEEE Cat. No.04EX877)

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Pulse Code Modulation (PCW format is the most frequently used for Discrete Cosine Transform (DCT) computation. The restriction of the use of PCM format in DCT algorithms are time-consuming multibit multiplications. They often limit the appropriate realization system or specialized processors which work in real time. One of the ways of eliminating multiplications is changing them into fast bits shifis operations using Modified Differential Pulse Code Modulation (MDPCM). However, this format does not ensure all quantization steps from the set of natural numbers that decreases the processing resolution. Alternative way to increase fast-acting of the algorithms with simultaneous high resolutions ensuring is using synthetic codes as PCM (SPCM) as DPCM(SDPCM) which are created by some MDPCM codes. The resolution improvement of DCT algorithms in dferential formats can be obtained by partial zeroing of DCT coeficients.The aim of this work is working out fast and accurate DCT algorithms without multiplications and improving resolution ofDCT spectrum for dfferential formats.

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Delta modulation in discrete cosine transform

Cited by 2 publications

References 3 publications

Fast Operations with the Use of Differential Codes

Fast Operations with the Use of Differential Codes

Fast-acting and resolution improve of DCT algorithms with the use of synthetic coding

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